Casting technology of square ram of numerical control gantry machining center

Abstract

The invention relates to the technical field of square ram casting, and discloses a casting technology of a square ram of a numerical control gantry machining center. The casting technology comprisesthe following steps of: step one. fixing a square ram manufacturing mold by adopting a horizontal moulding and pouring formative technology; step two. dividing a loam core of the inner cavity of the mold into multiple sections according to the structure, designing core prints on a window of the upper plane of the mold; step three. smelting by using an electric furnace smelting technology of smelting a high-strength gray pig iron with high carbon equivalent; step four. pouring molten iron smelted in the step three into the mold; and step five. processing a finished product, taking out a crude product, and then carrying out four-corn quenching, coarse grinding and fine grinding on the crude product to obtain the finished product. The casting technology of the square ram of the numerical control gantry machining center can produce large-batch square ram castings of machine tools with stable quality and high rate of finished products through horizontal moulding and pouring and suspended core processes in combination with the electric furnace smelting technology of smelting the high-strength gray pig iron with high carbon equivalent, is simple to operate and has high production efficiency.

Description

technical field [0001] The invention relates to the technical field of casting a square ram, in particular to a casting process for a square ram of a numerically controlled gantry machining center. Background technique [0002] The square ram castings in the CNC gantry machining center are high-strength gray iron castings with very high quality requirements. The material is HT300 or HT350. If there are any casting defects, welding repair is not allowed, and the quality requirements are very high. [0003] Such castings are prone to defects such as sand holes, pores, slag holes, and shrinkage porosity. As long as any small defects appear, they will be regarded as waste products. Generally, foundry manufacturers adopt the molding process of vertical casting or vertical casting, and the operation is very troublesome. , the scrap rate is as high as 20-50%, which has caused huge losses to the foundry, so a casting process for the square ram of the CNC gantry machining center is ...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a casting process for square rams of CNC gantry machining centers, which has the advantages of stable mass production of square ram castings, easy operation, and high yield, and solves the current problem of slippery rams on the market. The casting process of the pillow is cumbersome to operate and the scrap rate is high