Large castings, machine tool castings, and machine tool bed frames. DAXINGZHUJIAN utilizes the advantages of resin sand casting to produce large castings for machine tool bed frames; Resin sand molds have good rigidity and high initial strength during casting, which allows for the use of graphitization expansion during the solidification process of cast iron to eliminate shrinkage and porosity defects, and achieve low riser and no riser casting of gray cast iron and ductile iron parts. In the production of machine tool castings, polystyrene foam molds are used and furan resin self hardening sand molds are applied. When the molten metal is poured into the mold, the foam plastic pattern quickly vaporizes, burns and disappears under the action of the high-temperature molten metal. The metal liquid replaces the position occupied by the original foam plastic and cools and solidifies into a full mold casting with the same shape as the pattern. Machine bed frame.

Relatively speaking, lost foam casting has significant advantages over traditional sand molds for producing single or small batches of automotive coverings, machine tool beds, and other large molds. It not only saves expensive wood mold costs, but also facilitates operation, shortens production cycles, and improves production efficiency. It has advantages such as high dimensional accuracy, small machining allowance, and good surface quality.

The processing methods for large castings include machine tool bed processing, which generally uses large-scale machining, gantry planers, and gantry milling machines. For example, a set of 2 * 8-meter gantry milling and planing machine bed (with a total length of 16 meters) can be cast in two sections during casting, and rough machining can also be carried out in two stages.

During precision machining, they can be connected together and processed using our factory's 3.5 * 16 meter gantry planer, ensuring the overall straightness of the 16 meter bed and the post-processing accuracy of the machine tool.