Small cast iron tables generally use resin sand. On the one hand, it is to facilitate sand removal. There are also the following reasons:

 

1. Relatively speaking, lost foam casting has great advantages over traditional sand molds for the production of single or small batches of automobile covering parts, machine tool beds and other large molds. It not only saves expensive wood mold costs, but also facilitates operation. , It shortens the production cycle, improves the production efficiency, and has the advantages of high dimensional accuracy, small machining allowance, and good surface quality. 　

 

2. The resin sand mold has good rigidity and high sand mold strength in the initial stage of casting. This makes it possible to use the graphitization expansion of the cast iron solidification process to effectively eliminate shrinkage and shrinkage defects, and achieve fewer and no risers for gray cast iron and ductile iron.

 

3. In the production of solid casting, polystyrene foam is used to form furo resin self-hardening sand. When the molten metal is poured into the mold, the foamed plastic pattern quickly vaporizes under the action of the high-temperature molten metal, burns and disappears. The molten metal replaces the original foamed plastic position, and cools and solidifies into a solid casting with the same shape as the pattern.

 

cast iron table

 

Jinggong Measuring Tools Producing Co., Ltd is specializing in manufacturing and exporting all kinds of cast iron products，especially for cast iron floor plates, cast iron surface plates, cast iron clamping plates, cast iron angle plates, cast iron box table and other machine tool castings. Our engineering enables us to design the cast iron plates and tables according to DIN Standards, Indian Standards and Chinese Standards, machining by CNC machine tools and install in the world market.