Meltblown metering pump spinning metering pump special steel FHMV mold steel Cr12MoV round steel

High-standard melt-blown metering pumps, spinneret metering pumps, specialized steel FHMV for gear pumps, Cr12MoV mold steel material, Cr12MoV round steel supplier

9Cr18, 9Cr18Mo, Cr12MoV, Cr12, H13, 2Cr13, 3Cr13, T10, 3Cr2W8V

[Cr12MoV Round Steel] Cr12MoV Round Steel Price_Cr12MoV Round Steel Wholesale_Cr12MoV

Cr12MoV cold work die steel belongs to high wear-resistant micro-deformation tool steel, characterized by high wear resistance, hardenability, micro-deformation, high thermal stability, high bending strength, and other properties. It is second only to high-speed steel and is an important material for punch dies, cold heading dies, etc. Cr12MoV die steel is a carbon-molybdenum ledeburite steel with lower carbon content than Cr12 steel, and the addition of molybdenum and vanadium elements significantly improves the steel's hot workability, impact toughness, and carbide distribution. Cr12MoV die steel has lower carbon content than Cr12 die steel, and the newly added alloy elements improve carbide inhomogeneity. Molybdenum (Mo) reduces carbide segregation and increases hardenability, while vanadium (V) refines grains and increases toughness. Therefore, Feng Hui's Cr12MoV die steel has high hardenability, with sections up to 400 mm fully hardenable, and maintains good hardness and wear resistance at 300~400°C. Additionally, Feng Hui's Cr12MoV die steel has better toughness than similar materials on the market, and the possibility of volume change during quenching is greatly reduced. Thus, it possesses high wear resistance and good comprehensive mechanical properties, making it suitable for manufacturing large-section, complex-shaped dies subjected to heavy impact and various cold work tools under demanding conditions, such as punch dies, trimming dies, flanging dies, sheet metal deep drawing dies, circular saws, standard tools and gauges, thread rolling dies, etc.

Cr12MoV die steel linear (expansion) coefficient Temperature/℃ 20~100 20~40 20~600 Processing treatment: Cold extrusion mold blank softening specification: Use iron chips for protective heating, temperature 760~780℃, time 10 hours, furnace cooling, hardness 196 HBW, enabling smooth cold extrusion forming. Conventional isothermal spheroidizing annealing specification: 850~870℃ + 3~4 hours, furnace cooling to 740~760℃ + 4~5 hours isothermal, air cooling hardness ≤241 HBW, eutectic carbide grade ≤3, isothermal temperature 740~760℃, time ≥4~5 hours. Spheroidizing annealing specification: (860±10)℃ + 2~4 hours, furnace cooling at 30℃/hour, (740±10)℃ + 4~6 hours, slowly furnace cooling to 500~600℃, air cooling hardness 207~255 HBW. Conventional quenching and tempering specification: Quenching temperature 1000~1050℃, oil quenching or quenching, hardness 260 HRC, tempering temperature 160~180℃, tempering time 2 hours, or tempering temperature 325~375℃, tempering 2~3 times. Low quenching and low tempering: Quenching temperature 950~1040℃, tempering temperature around 200℃, double tempering. High quenching and high tempering: Quenching temperature 1050~1100℃, tempering temperature around 520℃, double tempering. High quenching and high tempering uses secondary hardening to increase hardness, but grain growth may occur. Cryogenic treatment: After cryogenic treatment of Cr12MoV steel, highly dispersed ultra-fine carbides precipitate from the quenched martensite. After subsequent low-temperature tempering at 200℃, these ultra-fine carbides transform into carbides. Untreated martensite only precipitates a small amount of carbides in certain local areas after low-temperature tempering. Feng Hui Cr12MoV uses low-temperature chemical heat treatment methods. While maintaining high hardness and wear resistance of Cr12MoV steel, ion nitriding, gas nitrocarburizing, and salt bath sulfocyaniding—three common low-temperature chemical heat treatment layers—all significantly resist impact adhesion, with salt bath sulfocyaniding being particularly effective.

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