$880

Category: Machinery & Equipment/General Mechanical Parts/Pumps

Company: Yancheng Hanxinsheng Marine Equipment Co., Ltd.

Product Description: 80CWL-8/65CWL-6/32CWL-3 Marine horizontal centrifugal pump, fire fighting cooling sanitary pump with CCS certificate. Marine horizontal centrifugal pump, fire fighting cooling sanitary pump with CCS certificate Model: 80CWL-8   65CWL-6   32CWL-3 There are many pump models. Please contact customer service if you need other models! Flow rate: 4m3/h, Head: 30M, Power: 1.5KW, Voltage: 380V The company mainly sells and provides radio emergency position indicating radio beacons, transponders, marine products, Japan Furuno marine MF/HF transceivers, walkie-talkies, Korea Samyang navigation warning receivers, Korea Samyang SAR-9 transponders, Korea Samyang SEP-500 radio emergency position indicating radio beacons, Japan Furuno MF/HF transceivers, 65CWY-40 marine emergency fire pumps, 50CWY-27 diesel engine emergency fire pumps, life jackets, life buoys, thermal insulation life jackets, marine domestic sewage treatment devices, oil-water separators, CCS certified platform lifting cages, light chemical protective clothing, heavy chemical protective clothing, pilot ladders, embarkation ladders, signal devices, fluorescent stickers, self-righting life rafts, inflatable life rafts, life buoy lights, life jacket lights, portable water foam extinguishers, PY4/200 mobile foam fire extinguishing devices, pressure foam proportioning mixing devices, balanced foam proportioning mixers, PS30-50 fire water monitors, PL24-48 fire foam monitors, cold-proof suits, aluminum alloy folding ladders, aluminum alloy dual-purpose ladders, movable operating ladders, heavy movable platform operating ladders, telescopic ladders, fire fighting water hoses, fire extinguisher cabinets, we can customize life jacket cabinets of various specifications, life buoys, Wolf safety lamps, Motorola GP328 walkie-talkies, pneumatic throwers, 135 wheeled foam fire extinguishers, 4KG dry powder fire extinguishers, 15ppm oily water alarm devices, CX-65 magnetic compasses, desktop magnetic compasses, aluminum foil thermal insulation suits, first-aid kits for lifesaving, rations, fire-resistant life-saving ropes, helicopter anti-slip nets, life detectors, carbon dioxide fire extinguishers, three-piece life jackets, sound and light alarm respirators with certifications, self-righting life rafts, life-saving descent control devices, helmets, boots, rubber boats, outboard motors, assault boats, resuscitators, demolition devices, inflatable waist belts, sacrificial anodes, Coltri air compressors, Canadian diving air compressors, diving equipment, dry diving suits, wet diving suits, flippers, diving cylinders, lifeboat stroboscopic position indicating lights, watertight searchlights, fishing boat radio stations, water film foam extinguishing agents, alcohol-resistant foam extinguishing agents, disaster relief tents, marine quartz clocks, aneroid barometers, fire hose stations, yacht rafts, ship AIS, Lakeland imported thermal insulation suits, 0.25 oil-water separators, 10-person sewage treatment devices, 0.1 marine oil-water separators, 3M reflective tapes, vertical eye wash stations, wall-mounted eye wash stations, composite eye wash stations, signal balls, life jacket whistles, scoop stretchers, life buoy lights, marine electronic chart systems, marine GPS, transfer pumps, SSB3/40-10 hydraulic transfer pumps, SSQ85 foam transfer pumps, AIS upgrade and expansion instruments, UK OceanSignal E100 radio emergency position indicating radio beacons, fire wrenches, fire-resistant ropes, valve racks, multi-purpose water nozzles, temperature and wind measuring instruments, signal lights, signal balls, fire boots, helmets, soft ladders, smoke signals, hand-held red flame signals, red parachute signals, floating smoke signals, heavy chemical protective clothing, fire joints, fire conversion joints, fire hydrants, iron fire extinguisher racks, life raft racks, oxygen respirators, life-saving air cushions, Korea Samyang AR-9 search and rescue transponders, transponder batteries, marine sextants, marine rubber fenders, anchor buoys, rocking marine inclinometers, marine three-legged dividing instruments, VHF marine walkie-talkies, portable emergency eye wash stations, all-copper maritime garbage notice boards, FT-7600 navigation warning receivers, Feitong marine wireless walkie-talkies, Motorola walkie-talkies, ship deck anti-slip nets, safety nets, marine anti-corrosion zinc anodes, carbon rods, stacked dehydrators, sludge dehydrators, solid-liquid separation equipment, food press filters and other products. more>

$55

Category: Chemicals/Chemical Intermediates/Intermediate Compounds

Company: 中大恒建北京新材料科技有限公司

Product Description: Polyacrylate emulsion cement mortar is a two-component material formulated from polyacrylate emulsion, special cementitious materials, and high-quality aggregates. It features excellent bonding, crack resistance, freeze resistance, impermeability, corrosion resistance, chloride ion penetration resistance, wear resistance, and aging resistance. It can be applied directly on damp substrates and exhibits strong adhesion to various base materials.I. Application Scope1. Waterproofing of steel structures and reinforced concrete.2. Impermeability treatment for reservoirs, dams, and ports.3. Repair of concrete on roads, bridge decks, tunnels, and culverts.4. Structural concrete reinforcement in buildings, waterproofing and leakage sealing for civil air defense facilities.5. Anti-leakage treatment for roofs, bathrooms, and basements in industrial and civil buildings.6. Construction resistant to chemical corrosion, such as hot water pools, landfills, chemical warehouses, and chemical tanks.II. Performance IndicatorsNote: The specification followed for chloroprene latex waterproof mortar: GB 50212-2014 "Code for Construction of Building Anticorrosion Engineering".III. Construction Process1. Substrate treatment: Remove the eroded layer of old concrete, clean the substrate, level it, ensuring no cracks or looseness; round off corners into arcs, and smooth any sharp areas.Moisten the substrate 5 minutes before construction, prepare chloroprene latex waterproof plain slurry, and apply a base layer of plain slurry about 1mm thick on the substrate surface.2. Waterproof layer construction: Prepare waterproof mortar and apply it by troweling. Mix emulsion and dry materials at a weight ratio of 1:6 until uniform. The mixed mortar should be protected from sun and wind.3. For large areas, mechanical spraying and sectional construction can be used.4. The applied mortar layer must be cured for 7 days. more>

Negotiable

Category: Chemicals/Chemical Intermediates/Intermediate Compounds

Company: Ruiyixiang Hangzhou Imp. & Exp. Co., Ltd.

Product Description: more>

Negotiable

Category: Chemicals/Heterocyclic Compounds/Piperidine

Company: Hongrui fine chemical co.,Ltd

Product Description: CAS NO:85187-37-7EC NO:286-126-9Molecular Formula:C40H38ClNO5Molecular Weight:648.1864Synonyms:;Cloperastine fendizoate;Benzoic acid, 2-((6-hydroxy(1,1'-biphenyl)-3-yl)carbonyl)-, compd. with 1-(2-((4-chlorophenyl)phenylmethoxy)ethyl)piperidine (1:1);o-((2'-Hydroxy(1,1'-biphenyl)-4-yl)carbonyl)benzoic acid, compoundwith 1-(2-(4-chlorobenzhydryloxy)ethyl)piperidine (1:1);2-[(6-hydroxybiphenyl-3-yl)carbonyl]benzoic acid - 1-{2-[(4-chlorophenyl)(phenyl)methoxy]ethyl}piperidine (1:1);Molecular Structure: more>

Negotiable

Category: Chemicals/Heterocyclic Compounds/Piperidine

Company: Hongrui fine chemical co.,Ltd

Product Description: CAS NO:220329-19-1EC NO:Molecular Formula:C20H24ClNO·C20H14O4Molecular Weight:648.1984Synonyms:;Levocloperastine Fendizoate;Molecular Structure: more>

Negotiable

Category: Chemicals/Pharmaceutical Raw Materials/Amino Acids & Derivatives

Company: 四川同晟生物医药有限公司

Product Description: CAS NO:3967-21-3EC NO:223-581-4Molecular Formula:C29H46N2O6Molecular Weight:518.6853Synonyms:;5-tert-Butyl N-(benzyloxycarbonyl)-2-aminoglutarate, compound withN-dicyclohexylamine (1:1);2-{[(benzyloxy)carbonyl]amino}-5-tert-butoxy-5-oxopentanoic acid - N-cyclohexylcyclohexanamine (1:1) (non-preferred name);Z-Glu(Otbu)-Oh Dcha;Z-Glu(OtBu)-OH·DCHA;N-cyclohexylcyclohexanamine,5-[(2-methylpropan-2-yl)oxy]-5-oxo-2-(phenylmethoxycarbonylamino)pentanoic acid;Molecular Structure: more>

Negotiable

Category: Chemicals/Carboxylic Acids/Glacial Acetic Acid

Company: 上海汇申化工有限公司

Product Description: CAS NO:68510-93-0EC NO:270-931-7Molecular Formula:C23H16N4O8SMolecular Weight:508.4601Synonyms:2,3,4-Trihydroxybenzophenone, 6-diazo-5-oxo-1-naphthalenesulfonyl chloride adduct;1-Naphthalenesulfonic acid, 6-diazo-5,6-dihydro-5-oxo-, ester withphenyl(2,3,4-trihydroxyphenyl)methanone;4-(2,3,4-trihydroxybenzoyl)phenyl 5-oxo-6-[(1E,3E)-tetraaza-1,3-dien-1-yl]-5,8-dihydronaphthalene-1-sulfonate;Molecular Structure: more>

Negotiable

Category: Chemicals/Chemical Intermediates/Intermediate Compounds

Company: 申兴国际物流（浙江）有限公司

Product Description: European and American Air Freight, Sea Freight, Rail Freight with Double Clearance and Tax Included more>

$8200

Category: Construction & Building Materials/Flooring/Vacuum Cleaners

Company: 炜彬清洁设备（南通）有限公司

Product Description: I. Applicable Locations Places without power sources or where power is inconvenient, such as warehouses, large factories, hardware workshops, chemical plants, electronics factories, metal floors, automotive tracks, playgrounds, squares, suburbs, artificial turf, garages, etc. Suckable materials: dust, powder, iron slag, iron filings, carbon powder, aluminum slag, aluminum chips, particles, stones, etc. III. Product Details 1. Equipped with a 24V DC dry/wet dual-purpose motor, capable of both dust and water suction. 2. 1500W high suction power, suitable for dust collection needs across various industries. 3. Three-motor design with individual switches, allowing adjustable suction power based on the material being collected. 4. Features an 80L tilt-type dust bucket for quick and convenient waste disposal. 5. Powered by a 100AH battery, offering flexible working time control. 6. Constructed entirely of stainless steel metal, equipped with (heavy-duty polyurethane brake casters). 7. Includes a HEPA polyester filter that is washable and reusable. 8. Front-mounted push-suction nozzle allows simultaneous pushing and suction. 9. Designed to meet general cleaning time requirements; charger takes approximately 6-8 hours for a full charge. IV. After-Sales Service:Demo available in Jiangsu, Zhejiang, and Shanghai regions, aiming to solve user problems. If the product is unsuitable after purchase, it can be exchanged for a suitable one based on customer needs. Two-year warranty. All future parts will be provided at member prices. Quarterly after-sales maintenance is available. For issues unresolved by phone in Jiangsu, Zhejiang, and Shanghai, proper handling will be provided within 24 hours. If on-site resolution is not possible, a backup machine will be provided for customer use until the issue is resolved. Delivery methods: We have self-operated delivery vehicles in Jiangsu, Zhejiang, and Shanghai. The company arranges transportation based on circumstances—large items are delivered by self-transport or logistics, small items by courier. Friendly reminder: While industrial vacuum cleaners are not structurally complex and there are many manufacturers, Jieweike offers stable performance and high quality, providing customers with truly clean equipment without secondary pollution. more>

$1

Category: Chemicals/Petrochemicals/Base Oil

Company: Chongqing HOPU Filtration Plant Manufacture Co.,ltd.

Product Description: Application: Series TYA-I is widely used in metallurgy, machinery, oil field, chemistry, mine, electric power generation plant, transportation and manufacturing enterprises for hydraulic oil, gear oil, engine oil, compression oil, freezer oil, heat treatment oil, compressor oil, refrigeration oil and other industrial oils. It can remove water, gas, mechanical impurities, light acid and light hydrocarbon from oil, improve oil quality, resume its lubricating property and ensure normal operation of the equipment. Features: 1.It has super ability in breaking emulsion, dehydration and degassing process. It adopts big-cubage, reinforced three-dimension flash distillation column, thin film evaporation technique and large area multi-level separation technique to efficiently and quickly remove water, gas and light hydrocarbon material . 2.It adopts high-quality filter element and sealing material with corrosion proof, high temperature resistance and excellent mechanical strength. It is suitable even for the purification process of high-viscosity oil under rather high temperature conditions and in this way expanding its application scope. 3.Fine and precise multi-stage filtration system can remove mechanical particulates thoroughly and effectively. 4.With air-cooling and condensation system, it can cool air in the vacuum system efficiently and quickly, which avoids inconvenience of water-cooling.   5.It has advanced high pressure protection device and infrared oil level control system for easy operation. 6.It is equipped with perfect automatic and manual oil heating temperature controller, automatic cooling and separation device, which is simple, safe and reliable. 7.It has aluminum electrical control cabinet, with high efficiency for heat transfer and it is anti-explosion. 8.The equipment can also be installed with digital flow meter and timer for auto calculating and recording oil volume and working time. (It is optional according to users’ requirement)   From the historical leader in oil purification comes the most advanced oil purifier in the world.   Technical Parameter Item Unit TYA-10 TYA-20 TYA-30 TYA-50 TYA-100 TYA-150 TYA-200 TYA-300 Flow Rate L/min 10 20 30 50 100 150 200 300 Vacuum Degree MPa -0.06 ～ -0.095 Working Pressure MPa ≤0.4 Temperature ℃ 0 ～ 100 Power Supply   3phrase,50Hz, 380V(or as needed) Working Noise dB(A) ≤75 ≤75 ≤75 ≤78 ≤78 ≤78 ≤80 ≤82 Heating power kW 36 40 45 72 80 90 120 135 Total power KW 38 42 47 75 87 101 135 147 Inlet/outlet caliber mm 25 25 25 32 42 50 50 60 Weight Kg 450 550 600 750 850 1000 1200 1500 Dimension Length mm 1500 1500 1500 1600 1750 1900 1900 2100 Width mm 1000 1050 1050 1150 1250 1600 1700 1700 Height mm 1200 1600 1600 1700 1800 1950 2000 2100 Parameter After Purification Demulsification value min New oil ≤15min, running oil ≤30min Impurity content Micron 1-5 Water Content PPM ≤80 Gas Content % ≤o.1 Cleanness NAS ≤6 grade   Please contact for more technical details and latest price: Michael Hua is at your service Email 1: mh@hopufiltration.com Email 2: oilfilter@aliyun.com QQ:330713880 Mob: 0086 13896055638 (what's App for online inquiry) Tel: +86 23 62538144 Fax:+ 86 23 62538144-3 Website: www.hopufiltration.com Branch 1: www.oilpurifiertech.com Branch 2: www.oilfiltration123.com more>

$800

Category: Instruments & Meters/Testing Machines/Impact Testing Machines

Company: Shenzhen Bonard Precision Instrument Co., Ltd

Product Description: Basic Introduction:1. Manufactured in accordance with the relevant clauses of IEC60068-2-75, GB/T2423.55-2006, GB4706.1, GB8898, GB7000, IEC884, and UL1244, it is primarily used to test the ability of housings, operating levers, handles, knobs, indicator lights, and other external parts of household and similar electrical appliances to withstand mechanical impact.2. This impact tester is made of stainless steel.1) Types (8 types): Spring impact hammer 0.14J, Spring impact hammer 0.20J, Spring impact hammer 0.35J, Spring impact hammer 0.50J, Spring impact hammer 0.70J, Spring impact hammer 1.00J, Spring impact hammer 1.50J, Spring impact hammer 2.0JImpact Energy Error 0.14J ±0.014J 0.20J ±0.020J 0.35J ±0.03J0.50J ±0.04J0.70J ±0.05J1.00J ±0.05J1.50J ±0.07J2.00J ±0.08JTechnical Parameters:Length: 211mmWeight: 1250gOuter Diameter: 50 mmHammer Head Weight: 60gHammer Head Radius: 10mmImpact Assembly: Includes the trigger handle and hammer head, weighing 250g; the hammer head is made of white polyimideImpact Release Force: Less than 10NHow to Use the Spring Impact Hammer: Fix the sample according to the relevant standard requirements, select the impact energy and test position, pull the operating handle of the impactor until a "click" sound is heard, and the impactor is then in the ready state. Align the impactor perpendicularly to the sample surface and in contact with it, push the impactor to release it, and conduct the impact test on the sample.Precautions for the Spring Impact Hammer1. When not in use, the device should be in the released state.2. The device has been calibrated; adjustments may severely affect its accuracy, and disassembling the product is considered a waiver of the three guarantees service.3. After spring replacement or adjustment, the device must be calibrated by a metrology department before use.4. This device is a precision instrument and should be handled with care to prevent dropping.5. Storage conditions: In a box with desiccant at a temperature of 5～35℃.6. During testing, prevent the hammer rod from bouncing off the sample, causing multiple impacts. more>

$800

Category: Electrical Equipment & Supplies/Low Voltage Electrical/Relays

Company: Shenzhen Bonard Precision Instrument Co., Ltd

Product Description: BS1363-Fig1  Test PIN BS1363-Fig2  Mechanical strength test device for flexible housingBS1363-Fig5  Plug insertion gaugeBS1363-Fig6  Test device for connector cover mounting screwsBS1363-Fig7  Mounting panelBS1363-Fig8  Plug flexible bending test deviceBS1363-Fig10 Pressure test deviceBS1363-Fig11max/min  Socket go gaugeBS1363-Fig12  Contact test gaugeBS1363-Fig14  Non-contact test gaugeBS1363-Fig15  Socket lateral stress gaugeBS1363-Fig16a/b  Socket withdrawal force gaugeBS1363-Fig17a.b  Test device and simulation panel for temperature rise testBS1363-Fig19  Stainless steel solid fuseBS1363-Fig23   Pressure test deviceBS1363-Fig32   Test device for pins (excluding 1100N device)BS1363-Fig20   Drum deviceBS1363-Fig24   Ball pressure deviceBS1363-Fig29   Calibration fixture for fuse tubesBS1363-Fig30   Temperature rise plugBS1363-Fig33   Torque fixtureBS1363-Fig34   GaugeBS1363-Fig35   GaugeBS1363-Fig37   Plug torque test deviceComplies with standard: BS 1363 standard requirements. more>

$电议

Category: Metallurgy & Minerals/Non-Ferrous Processed Materials/Non-Ferrous Metal Sheets

Company: Beijing Aerospace Caesar System Technology Co., Ltd.

Product Description: The aluminum alloy lined PERT composite pipe (Aerospace Kaiser Pipe) is a curved elastic vector ASAK pipeline system based on aerospace technology and European Kaiser industrial manufacturing philosophy, dedicated to maintenance-free applications throughout its service life. It consists of curved elastic vector ASAK aluminum alloy lined PERT composite pipes and fittings. It is suitable for cold and hot water supply systems in industrial or civil high-rise buildings such as hospitals, schools, and office buildings, as well as for transporting various chemical media.Aerospace organic polymer materials, as non-polar compounds, exhibit no electrochemical corrosion and possess stable chemical properties, enabling excellent corrosion resistance in various harsh environments. They remain inert to most acids, alkalis, salts, oxidizers, and polar solvents, further broadening their application scope in chemical media.The aluminum alloy lined PERT composite pipe (Aerospace Kaiser Pipe), made from aerospace organic polymer materials, offers comprehensive corrosion resistance, effectively preventing corrosive damage from various transported media. It has broad application prospects in fields such as chemical industry, petroleum, natural gas, pharmaceuticals, and environmental protection.In the food industry and healthcare sectors, its food-grade sanitary safety performance provides clean, healthy, and reliable solutions for various applications. For instance, it ensures product hygiene and safety in drinking water transportation, dairy processing, beer brewing, and juice production, while also improving production efficiency. In critical processes of the pharmaceutical industry, such as purified water and water for injection, the use of aluminum alloy lined PERT composite pipes (Aerospace Kaiser Pipe) guarantees high sanitary safety in product manufacturing. more>

$1500

Category: Chemicals/Inorganic Salts/Other Inorganic Salts

Company: Dazhou Jianjie New Materials Technology Co., Ltd.

Product Description: Steel Plant High-Calcium Dust Ash Binder Less Water Addition Compatible with Calcium Oxide Sludge Dust Ash Fast MoldingHigh-Calcium Dust Ash  Sludge Briquetting Binder  Less Water Addition  Fast Molding  No Need for Calcium Oxide Slaking  Jianjie New Anti-High-Calcium Binder  Widely Recognized by CustomersFree Binder Formula Adjustment with Sample Submission, Shipment After Meeting Requirements  Full Production Guidance After Delivery Contact Me Now  more>

$180

Category: Instruments & Meters/Analytical Instruments/Other Analytical Instruments

Company: Yantai Lesen Machinery Equipment Co., Ltd

Product Description: Due to fluctuations in raw material prices, models and prices may vary. For specific quotations, please contact our sales staff. Thank you.The electronic anemometer keeps complexity to itself and brings simplicity to you. Less redundancy, more responsibility. With a minimalist body design, every measurement is carried out with ease. The essence of simplicity applies to wind measurement as well. With just one button, you can understand the wind.The handheld electronic anemometer is an instrument for measuring speed, widely used in coal mines, transportation, construction, chemical industries, and meteorological observation. It can measure instantaneous wind speed and one-minute average wind speed.Mechanical Anemometer Parameters1. Explosion-proof type: Mine intrinsically safe2. Explosion-proof mark: Exib I 3. Measurement range: 0.3～30m/s 4. Measurement error: Basic error valueWind speed 0.3～5m/s ≤0.2 m/s; 5～10m/s ≤0.3 m/s; 10～35m/s ≤0.4 m/s;         Wind temperature ±1℃     5. Resolution: 0.01m/s; 0.1℃     6. Starting wind speed: ≤0.2m/s     7. Display method: LCD simplified Chinese character display     8. Battery: 800mAh     9. Charging time: ≤4 hours     10. Data transmission rate: 9600b/s     11. Dimensions: 120×60×22 mm     12. Weight: 180gWith continuous advancements in technology, people's attention to wind is increasing, and devices for monitoring wind speed and direction are becoming more diverse. As one of them, the wind speed and direction anemometer is suitable for wind speed detection in underground mines and other harsh environments. more>

$10

Category: Chemicals/Chemical Intermediates/Intermediate Compounds

Company: Yantai Lesen Machinery Equipment Co., Ltd

Product Description: Due to fluctuations in raw materials, prices and models may vary. For specific quotations, please contact our sales staff. Thank you.Explosion-proof water bags are not just "bags for holding water." We use plastic-coated fabric material—impact-resistant, capable of long-term stable operation in damp, coal-dust-filled underground environments. We provide technical support; if you have needs, we can offer on-site installation guidance. Multiple specifications of explosion-proof water bags are available to meet requirements—safety should never be compromised.Purpose of GD80L Explosion-Proof Water Bag:Used as installation containers in coal mine undergrounds. Water bag sheds assembled according to technical requirements can effectively isolate gas. The materials used for the water bags possess properties such as flame retardancy and anti-static performance.Features of GD80L Explosion-Proof Water Bag:The advantages of explosion-proof water bags include small size and lightweight, making them a widely recognized product in mines. Compared to rock dust barriers, water has a higher specific heat capacity—five times that of rock dust—resulting in greater heat absorption and effective explosion isolation. Upon contact with high-temperature flames, water forms steam, aiding in flame suppression. Under the impact of shockwaves, water disperses faster than rock dust. Water supply is more convenient than rock dust, allowing long-term use without replacement, whereas rock dust requires processing and regular replacement. This design incorporates explosion-proof water sheds, hence eliminating the need for rock dust barriers.Packaging, Transportation, and Storage of 80L Explosion-Proof Water Bag:1. Product packaging must comply with railway and highway transportation regulations (100 water bags per package, packed in woven bags).2. During transportation, avoid mechanical impact and friction, and protect from direct sunlight and rain.3. Products should be stored in well-ventilated warehouses. Stacking should not be too high to avoid affecting quality. Keep away from substances that may damage rubber. How to choose mining explosion-proof water bags? GD40L explosion-proof water bags hang below the board with white bag bodies and eye-catching labels—both visible and space-saving. Each hanging point is securely fixed, always ready. Orders are shipped immediately. Explosion-proof water bag promotions are ongoing! more>

$5500

Category: Machinery & Equipment/Electric Heating Equipment/Annealing Furnaces

Company: Zhengzhou Lianxin High-Temperature New Materials Co., Ltd.

Product Description: more>

$1650

Category: Metallurgy & Minerals/Common Steel/Other Steel Products

Company: Xingtai Longcai Trading Co., Ltd.

Product Description: Applications of DY-Ag25 Silver Solder Strip with 30% Silver ContentDY-Ag25 silver solder strip is a material widely used in brazing processes. We can learn about the specific applications and performance characteristics of this silver solder strip.ApplicationsDY-Ag25 silver solder strip is primarily used for brazing the following materials:CopperCopper alloysSilver-nickel alloysSteel and stainless steelThis silver solder strip has a silver content of 25% and offers excellent brazing process performance, making it suitable for various industrial fields. For example:Copper-to-copper tube joints in refrigeration systems of air conditioners, refrigerators, and freezersCopper-to-copper components in the manufacturing of freezers, air conditioners, electric motors, and instrumentation industriesBrazing of metals such as copper, copper alloys, silver alloys, tungsten, and molybdenum more>

$6522

Category: Instruments & Meters/Measuring Instruments/CMM Coordinate Measuring Machines

Company: Botou City Qili Machine Tool Manufacturing Co., Ltd.

Product Description: Selection and Application of Specialized Iron Surface Plates for Motor Performance Test Benches: Key Technologies to Enhance Testing AccuracyMotor performance testing is a critical process for evaluating core indicators such as motor power, efficiency, torque, and vibration. The specialized iron surface plate, serving as the benchmark carrier for the test bench, directly determines the reliability of test data. In motor testing, even a flatness deviation of 0.01mm or a vibration interference of 0.05g can lead to torque measurement errors exceeding 5% and rotational speed detection deviations of over 10r/min. This article focuses on the specific requirements of motor performance test benches, detailing the key selection points and application technologies for iron surface plates, helping enterprises significantly improve motor testing accuracy through scientific selection and standardized application.I. Selection of Iron Surface Plates for Motor Performance Test Benches: Targeting Three Core Requirements1. Precision Matching: Meeting the Micron-Level Benchmark Requirements of Motor TestingMotor test benches have stringent requirements for the flatness and parallelism of iron surface plates, necessitating differentiated selection based on the precision grade of the motor under test:Small and medium-sized motors (e.g., servo motors, precision grade ≤0.1): Use Grade 00 cast iron surface plates with flatness error ≤0.01mm/m, working surface contact points ≥30 points/25mm×25mm, ensuring a motor base-to-test bench fit rate ≥95% to avoid coaxiality errors caused by installation deviations;Large industrial motors (e.g., asynchronous motors, power ≥100kW): Grade 0 iron surface plates can be used with flatness error ≤0.02mm/m, but additional machining of pin holes (tolerance H7) is required, with hole position deviation ≤±0.02mm, using pins to connect the motor to the test equipment and reduce the impact of radial runout on torque testing.Additionally, the surface roughness of the iron surface plate must be controlled within Ra0.8-1.6μm to reduce friction noise between the motor base and the plate during operation, avoiding interference with vibration test data.2. Vibration Resistance: Isolating Vibration Interference in TestingElectromagnetic vibrations during motor operation (frequency 20-500Hz) and external environmental vibrations (e.g., workshop equipment operation) are major factors affecting testing accuracy. Selection must focus on vibration transmissibility and damping characteristics:Prioritize iron surface plates with a "cast iron base plate + damping layer" composite structure. The base plate should be made of HT300 gray cast iron (tensile strength ≥300MPa), and the damping layer should use rubber (thickness 20-30mm, Shore hardness 65-70A), which can reduce vibration transmissibility in the 20-200Hz frequency range by over 70%;For testing projects involving high-frequency vibrations (e.g., motor noise testing), air spring vibration isolators (stiffness 5-15N/mm) should be used to control the vibration acceleration of the iron surface plate within 0.005g, ensuring noise testing error ≤1dB.3. Load Capacity: Adapting to the Weight Requirements of Motors with Different Power RatingsThe load capacity of the iron surface plate must cover the total load of the motor weight and testing fixtures, with a 20%-30% safety margin:Small motors (weight ≤500kg): Select iron surface plates with dimensions of 1500×2000mm, thickness ≥200mm, rib spacing 300-400mm, rated load capacity ≥1000kg;Medium motors (weight 1-5t): Use iron surface plates with dimensions of 2000×3000mm, thickness ≥250mm, ribs arranged in a "grid pattern" (spacing 250-300mm), rated load capacity ≥8000kg;Large motors (weight >5t): Custom modular iron surface plates are required, with individual module thickness ≥300mm, joined by mortise and tenon structures, joint gap ≤0.03mm, overall rated load capacity ≥20000kg, and additional reinforcement ribs (width 100-150mm) installed in the motor mounting area to avoid deformation caused by localized stress concentration.The selection and application of specialized iron surface plates for motor performance test benches are foundational to enhancing motor testing accuracy. By matching precision grades, vibration resistance, and load capacity, combined with scientific installation calibration, vibration isolation, and fixture adaptation technologies, testing errors for key indicators such as motor torque, rotational speed, and noise can be controlled at a high level. In the fields of motor R&D and quality inspection, paying attention to the details of iron surface plate selection and application not only ensures the accuracy of test data but also provides a reliable basis for motor performance optimization and quality improvement, helping enterprises enhance their competitiveness in motor manufacturing.Ms. Xie, Qili Machine Tool, 13785751790 more>

$6211

Category: Machinery & Equipment/Commercial Equipment/Checkout Counters

Company: Botou City Qili Machine Tool Manufacturing Co., Ltd.

Product Description: No more worries about installing motor test bases! Follow the specifications, and it's almost impossible to "fail"!Motor test base installations often fail due to "relying on experience and lacking standards"—uneven ground causing base tilt, loose bolts leading to vibration, wildly inaccurate test data, and even worn motor bearings. In fact, by following the specifications step by step, you can complete the installation and avoid 90% of common issues. This article breaks down the entire process of motor test base installation, from preparation to acceptance, with clear requirements, so you can install the base without worries and make "failure" nearly impossible!I. Core Installation Steps: 4-Step Standard Operation for Zero FailureThe installation process follows four steps: "positioning → leveling → fixing → sealing." Each step has clear standards, rejecting the idea of "close enough":Step 1: Precise Positioning: Use a forklift or hoisting equipment to move the base to the installation position (use dedicated lifting points during hoisting to avoid base deformation). Refer to the workshop baseline or motor installation position, measure the distance between the base edge and the baseline with a tape measure (error ≤ 2mm). Then, use a laser alignment tool to project crosshairs, ensuring the base axis aligns with the motor axis (deviation ≤ 0.01mm). Mark the ground after positioning to prevent displacement;Step 2: Level Calibration: Place a level gauge at five points across the four corners of the base working surface. Rotate the bottom leveling bolts clockwise (each rotation adjusts the level by 0.5mm), adjusting point by point until the bubble is centered. The leveling error at all points must be ≤ 0.01mm/m, and the difference between any two points must be ≤ 0.005mm. After calibration, mark the leveling bolt positions with red paint to avoid accidental adjustments later;Step 3: Even Fixing: Tighten Φ24mm expansion bolts (6-8 bolts total, spaced 1.5-2m apart) in a "diagonal sequence." Perform this in two steps: first, pre-tighten to 50% of the rated torque (e.g., for an 8.8-grade bolt with a rated torque of 220N・m, pre-tighten to 110N・m), let it sit for 1 hour, then tighten to the rated torque. Finally, use a torque wrench to recheck, ensuring each bolt's torque deviation is ≤ ±5% to prevent local over-tightening and base cracking;Step 4: Gap Sealing: Fill the gap between the base and the ground (≤ 2mm) with neutral silicone sealant. The sealant layer should be 1-1.5mm thick, applied continuously along the base edge without breaks or bubbles. After the sealant cures for 24 hours, press it by hand to ensure no deformation. This prevents dust and coolant infiltration and helps reduce vibration transmission.II. Post-Installation Acceptance: 3 Tests to Pass for True QualificationDon’t rush to use the base after installation. Perform these 3 acceptance tests to confirm everything is okay before putting it into service:Accuracy Recheck: Use a level gauge to measure levelness again (error ≤ 0.01mm/m) and a laser alignment tool to measure the axis deviation between the base and motor installation position (≤ 0.003mm/m). The data must match the installation values to qualify;Vibration Test: Under no-load conditions, place a vibration sensor on the base (sampling rate 1000Hz). Start a nearby motor of the same power (simulating working conditions). The base vibration amplitude must be ≤ 0.003mm, with no abnormal resonance;Load Verification: Fix a motor matching the base’s load capacity (e.g., an 8-ton motor on a 10-ton base) to the base. After running for 30 minutes, check for no loose bolts, no base deformation, and torque test data repeatability ≥ 98%, indicating stable installation.Whether the motor test base installation "fails" depends on following the specifications—thorough preparation, precise installation steps, and strict acceptance testing. By adhering to standards at every step, issues like "uneven ground, loose bolts, and insufficient precision" can be avoided. This specification not only makes the installation process smoother but also provides a stable foundation for subsequent motor testing, ensuring accurate and reliable test data. Follow these steps, and installing a motor test base will truly be worry-free—it’s almost impossible to "fail"!Qili Machine Tool, Ms. Xie, 13785751790 more>