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Ground Iron Paving Process - 5 Core Techniques to Control Installation Precision and Stability
In industrial production and the installation of various large-scale equipment, ground iron serves as a fundamental support structure, and its paving quality directly affects the stability, precision, and service life of equipment operation. From the installation of machine tools in mechanical manufacturing workshops to the equipment layout of automotive production lines, paved ground iron can distribute equipment loads, reduce the impact of ground settlement, and provide a reliable benchmark for high-precision operations. The following will delve into how to achieve dual assurance of ground iron installation precision and stability through 5 core techniques.
1. Preliminary Preparation: Planning and Material Inspection
Preparations before paving are like the cornerstone of construction, laying the foundation for the smooth progress of subsequent construction, covering site survey, material selection, and tool calibration.
Site Survey and Planning: First, survey the paving site to check ground flatness and load-bearing capacity. Ground flatness errors must be controlled within ±5mm. If deviations are excessive, grinding or repair should be done in advance. Meanwhile, based on equipment layout and operational requirements, use a total station or laser rangefinder to plan the paving position of the ground iron, determine the center and reference points, and mark errors ≤±2mm to ensure accurate positions of all ground iron pieces, meeting the spatial positioning requirements for equipment installation.
Material Inspection: Ground iron is key to ensuring installation quality. Choose high-strength cast iron materials, such as HT250 or HT300, with tensile strengths of 250MPa and 300MPa or higher, respectively, to ensure no deformation under long-term heavy loads. Upon arrival, use a hardness tester to sample the surface hardness of the ground iron, which must reach HB170-240. Also, check for defects such as sand holes, air holes, or cracks, and perform non-destructive testing on key areas using magnetic particle inspection or flaw detectors to ensure internal material quality is reliable.
Tool Calibration: Prepare high-precision measurement and installation tools and calibrate them in advance. The accuracy of the coincidence level must reach 0.01mm/m, and it should be calibrated on a standard platform before use. The length of the bar bridge plate should be selected based on ground iron specifications to ensure full coverage of the working surface during measurement, with its own flatness error ≤0.02mm. Additionally, tools such as torque wrenches and steel tape measures must be regularly calibrated to ensure measurement and operational accuracy.
2. Foundation Treatment: Building a Stable Base
A solid foundation is a prerequisite for the stable installation of ground iron, requiring ground cleaning, leveling, and reinforcement.
Ground Cleaning: Use high-pressure water guns or grinders to remove debris, oil stains, and loose layers from the ground, ensuring the surface is clean and free of dust to provide a good interface for subsequent bonding or fixing. After cleaning, use a blower to dry the ground to prevent residual moisture from affecting foundation strength.
Leveling Work: For uneven ground, use cement mortar or self-leveling materials for leveling. Based on ground elevation control points, use screed boards and straightedges to evenly apply the leveling material, controlling flatness errors within ±2mm/m. For large-area leveling, laser leveling instruments can be used to improve construction efficiency and precision. After the initial setting of the leveling layer, use a wood float for roughening to enhance bonding strength with the ground iron.
Reinforcement Measures: If the ground load-bearing capacity is insufficient, reinforcement is needed. Drill holes in the ground, install chemical anchors or expansion bolts with spacing controlled at 300-500mm according to design requirements, and then pour a concrete cushion layer of C30 or higher with a thickness ≥100mm. After compacting the concrete, level the surface and cure it for 7-14 days to ensure the foundation strength meets the load-bearing requirements of the ground iron.
The 5 core techniques of ground iron paving, from detailed planning in preliminary preparation to the solid construction of foundation treatment, followed by precise positioning during paving, meticulous leveling adjustments, and strict control of fixing and acceptance, are interlinked to collectively ensure high precision and stability in ground iron installation. In actual construction, strictly following these processes, selecting appropriate materials and tools, and having experienced construction personnel operate can significantly improve the quality of ground iron paving, providing a solid foundation for the stable operation of various industrial equipment. With the continuous development of industrial technology, future ground iron paving processes will move toward intelligence and automation, further enhancing construction efficiency and precision to meet higher standard engineering requirements.
Weiyue Machinery Ms. Xie 15350773479