How to guarantee the quality and safety of plastic molds?

Issuing time:2018-09-19 15:57

Plastic mold processing refers to the processing of plastic molding and plastic blanking tools. It consists of two parts: upper mold and lower mold. Its basic characteristics are as follows:


 (1) High processing accuracy requirements


 A pair of molds are generally composed of a die, a punch and a mold base, and some may also be a multi-piece split module. Therefore, the combination of the upper and lower molds, the combination of the insert and the cavity, and the assembly between the modules require high processing precision. Precision molds often have dimensional accuracy of up to μm.


 (2) complex shape


 Some products, such as automobile covers, aircraft parts, toys, and household appliances, have a surface that is composed of a variety of curved surfaces. Therefore, the mold cavity surface is complicated. Some surfaces must be processed mathematically.


 (3) Small batch size


 The production of molds is not mass-produced in batches, and in many cases, only one is produced.


 (4) More processes


 Milling, boring, drilling, reaming and tapping are often used in mold processing.


 (5) Repeated production


 The use of the mold is long-lived. When the use of a mold exceeds its life, a new mold is replaced, so the production of the mold is often repetitive.


 (6) Profile processing


 Sometimes there are no drawings and no data in the production of molds, and it is necessary to carry out profiling according to the actual objects. This requires high precision and no distortion.


 (7) Excellent mold material and high hardness


 The main materials of the mold are mostly made of high-quality alloy steel, especially the high-life mold, which is often made of Crl2, CrWMn and other Leysite steel. This type of steel has strict requirements from rough forging, processing and heat treatment. Therefore, the preparation of the processing technology can not be ignored, heat treatment deformation is also a problem that needs to be taken seriously in processing.


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