Die (mú jù), for the industrial production of injection molding, blow molding, extrusion, casting or forging molding, smelting, and other methods to get all kinds of stamping molds and tools needed products. In short, precision molds are used to shape the article tool that constituted by various parts, the different parts of the mold by a different composition. It is mainly by changing the physical state of the molding material to achieve the shape of the article processing. Known as "the mother of industry" in the title. Precision mold select high mechanical strength of steel. Production cavity, runner material to go through strict heat treatment. High hardness (molded parts should reach HRC52), wear resistance, corrosion resistance of the material.
Precision molding, from the strict sense, referring produced by injection molding machine equipment size precision plastic products, can reach 0.01mm or less, usually between 0.01 ~ 0.001mm in an injection molding production. "Precision molding" concept, mainly distinguished from "conventional injection molding", with the rapid development of polymer materials and microelectronics technology, highly integrated electronic circuits, making industrial equipment parts and gradually developed into a high-performance, high precision, lightweight, compact and miniaturization. Thus, in line with high accuracy requirements of precision molds because, along with good mechanical, mechanical properties and dimensional stability, etc., in the industries of machinery, electronics, instrumentation, telecommunications, automotive and aerospace instrumentation, the replaced part precision metal parts and has been widely used.
Precision molding characteristics are: the size of injection molded parts requiring high precision, small tolerances.
To accomplish the requirements of precision molding conditions must be met:
(1) precision mold material better positioning accuracy sufficient rigidity, dimensional accuracy and the cavity between the template to be higher, lower surface roughness.
(2) To adopt precision injection molding machine.
(3) To adopt precision molding process.
(4) to be chosen for precision injection molding material.
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