What are the common blanks for plastic molds?


Profiles refer to bars, sheets, and other sections of v […]

Profiles refer to bars, sheets, and other sections of various sections. This is the most widely used type of blank in mold parts. After cutting, it is sent to the processing workshop for surface processing. The main methods of cutting such materials are shearing, sawing, grinding wheel cutting, flame cutting, breaking, etc. Forgings are billets of reasonable geometric shapes and sizes obtained by forging profiles. Forging mainly includes axial upsetting, transverse upsetting and multi-directional upsetting. The purpose of forging is to obtain a reasonable geometric shape and machining allowance, save raw materials and reduce the amount of machining. Improve the metal structure, so that the porosity and bubbles are improved, and the density can be improved. Improve the direction of metal fibers in the blank to make their distribution more reasonable, and improve the bearing capacity and performance of the parts. Improve the unreasonable distribution of carbides in the material, and improve the heat treatment performance, machining performance and mold service life.

Commonly used castings in plastic molds include steel castings, iron castings, and aluminum castings. The shape and size of the casting shall meet the requirements of the casting drawing, and its chemical composition and mechanical properties shall meet the specified requirements. The surface of the casting should be cleaned with sand, and the scars, flashes and burrs should be removed, and the residual height should not be greater than 3mm. There should be no pores, blisters, cracks and other defects in the interior of the casting, especially near the working surface, and there should be no serious defects on the non-working surface. loose and larger shrinkage cavities. The castings should be heat treated in time, the steel castings should be thoroughly annealed, and the iron castings should be aged to eliminate internal stress and improve processing performance.

With the development of mold specialization, the number of mold bases, templates, and other parts presented in the form of products is increasing. After using these mold standard parts, it is only necessary to process the molding surface and related parts, which greatly shortens the mold manufacturing cycle. With the development of mold technology, mold standard parts will be the mainstream direction of mold parts blanks.