Machine tool castings

Advantages of machine tool castings:

1. Resin sand molds have good rigidity, and in the early stage of casting, it is possible to utilize the graphitization expansion during the solidification process of cast iron, as well as the shrinkage and porosity defects in machine tool castings and machine tool bed castings, to achieve less riser and no riser casting of gray cast iron and ductile iron castings.

2. In the production of CNC machine tool castings, polystyrene foam patterns are used and self hardening sand molds are formed using rosin resin. When the metal liquid is poured into the mold, the foam plastic pattern will vaporize under the action of the high diffuse metal liquid, burn and dissipate. The metal liquid replaces the position occupied by the original foam plastic, and will be cooled and solidified into a solid pattern with the same shape as the pattern.

3. Relatively speaking, lost foam casting has great advantages over traditional sand molds for producing single or small batches of automotive coverings, machine tool bed castings, and other large castings. It not only saves expensive wood mold costs, but also is easy to operate, shortens production cycles, improves production efficiency, and has advantages such as small machine tool bed casting size, small machining allowance, and good surface quality.

Manufacturing of machine tool castings:

1. The CNC machine bed castings are all made of resin sand and lost foam solid casting, with a single piece weighing over 40 tons and an annual production capacity of 8500 tons.

2. The material is made of delicate gray cast iron HT200-HT300, with a high ratio of tensile and bending strength, making your purchase worry free.

3. The popular heat treatment process reduces the stress deformation of castings to a small degree. The usage tends to be stable.

Product characteristics of machine tool castings:

(1) Good physical properties due to the favorable lubrication and oil storage properties of graphite in cast iron. Similarly, due to the presence of graphite, the shock absorption of gray cast iron is superior to that of steel.

(2) Due to its high carbon content and eutectic composition, gray cast iron has a relatively low melting point, good flowability, and low shrinkage rate, making it suitable for casting complex or thin-walled castings. In addition, due to the tendency of graphite to form chips during cutting, the machinability of gray cast iron is superior to that of steel.