Introduction to Defect Correction of Machine Tool Castings

Correction of Defects in Machine Tool Castings: Based on the repair results of several traditional welding techniques on the defects of machine tool bed castings, analyze the reasons for the inadequate correction results of machine tool castings. After studying the correction results of forging defect repair machines on machine tool castings, a feasible new technology and its techniques for correcting machine tool castings have been determined. The forging defect repair machine is used to correct the defects of forged parts. During the correction process, the castings do not deform, do not heat up, do not crack, have fine welding points, do not produce stiff points, and have no annealing appearance, and can be subjected to any mechanical processing. The selection of supplementary materials is not limited by the raw materials, and through the selection of different raw materials for supplementary materials, it is possible to achieve consistency in the welding point function, color, and matrix. The connection between the supplementary material and the parent material is metallurgical, with high strength and no occurrence of dropping. The welding quality meets the quality inspection standards for machine tool castings, and is a new technology worth widely promoting.

Regarding the major drawbacks of machine tool castings, we recommend the combined application of traditional welding repair techniques and forging defect repair machines. However, the welding repair scale of the forging defect repair machine is a process of repeated melting and accumulation of welding repair points with a diameter of Φ 1.5- Φ 1.2mm. In the large-scale defect repair process, the correction power is the only factor that restricts its widespread application. The prevailing heat treatment technology reduces the stress and deformation of castings to a small degree. Long term use tends to be stable. The raw materials for machine tool castings are all fine grey cast iron HT200-HT300, with a ratio of * * and high tensile and bending strength. It uses resin sand and lost foam solid forging, with a single piece weighing over 40 tons and an annual production value of around 8500 tons. Including machine bed, worktable, column, crossbeam, and gantry top connecting beam

Hebei Fengquan Machinery; Cast iron measuring tools, cast iron platform plates; Manufacturer of cast iron brackets. Main products: 3D welding platforms of various specifications and materials, cast iron flat platforms, scraping and grinding plates, inspection plates, marking plates, riveting and welding plates, assembly plates, T-shaped groove plates, three-dimensional plates, machine tool workbenches, machine tool shims, cast iron bending plates, square boxes, square rulers; Measuring tools such as flat rulers, V-shaped iron, V-shaped frames, jacks, special wrenches, various mechanical test benches, mechanical sliding tables, granite flat plates, marble flat plates, granite square boxes, machine tool inspection rods, various ring gauges, plug gauges, sine gauges, etc., and undertaking various casting (customized according to drawings), mechanical processing, and machine tool castings; Flat measuring tools and machine tool scraping and grinding maintenance business.

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