Q: Why does HR use resin sand casting process to produce mining machinery parts?
A: First, resin sand casting process is simple, short production cycle Compared with other casting processes, the resin sand casting process is simple and easy to operate, and the molding speed of the resin sand process is fast, without drying and repairing, and the casting deformation caused by baking and repairing is reduced. At the same time, the flow of molding sand is good, there is no need to tamp and tighten, reduce the damage and deformation of the core box, and greatly shorten the production cycle and delivery cycle of the casting. At the same time, the use of resin sand mechanized production line greatly reduces the labor intensity of foundry workers in core making, forming, sand dropping, cleaning and other links, reduces the casting pressure, and achieves high efficiency production. It can effectively reduce the production cost. The molding speed of resin sand process is fast.
Second, high molding precision, good surface quality:
In the production process, due to the high hardness of the casting mold and good dimensional stability, it can ensure that the size of the castings produced is stable, the molding accuracy is high, and the surface quality is good, and it is not easy to appear surface defects such as scars and burrs. Resin sand has high temperature resistance, good air permeability and thermal stability to achieve tight casting structure. The surface of the casting produced by the resin sand process is smooth, the corners are clear, and the dimensional accuracy is high, which can greatly reduce the sand holes, pores, cracks and other defects of the casting, and can cast casting products with high standards and strict requirements.
Thirdly, wide range of application:
Resin sand casting can be applied to the production of various specifications, models of castings, he is not subject to the shape of the part, the degree of complexity and the type of alloy restrictions, especially in the production of complex shape castings, more able to show its flexibility, low processing costs, suitable for large-scale casting mass production castings.
Fourthly, save resources:
Resin sand casting in the production process, because the mold material used is deformable sand material, so the use of cutting materials is less, but also reduce the need for processing contour, in one step in the production process, resin sand process cancels the kiln and hydraulic sand cleaning, reduce water waste, reduce dust, noise and other environmental pollution, It is effective in saving water, coal and electricity. At the same time, the recycling rate of old sand is high, and the recycling rate can generally reach 90-95%, which can save resources and reduce waste pollution. Meanwhile, the casting structure is stable and not easy to change.
