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Guangzhou mold processing: method of mold processing

浏览:152发布日期:2017-11-13 09:55:09 返回列表 Source: Guangzhou Haoshun Mould Co., Ltd.Browse: 152Release Date: 2017-11-13 09: 55: 09Return list

Today, Guangzhou mold processing will tell you about the mold processing method

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Injection molds are usually formed in batches during processing. Therefore, we attach great importance to the methods and processes of mold injection technicians. If the mold is not processed as specified, the injection mold will be damaged. For this reason, Xiaobian introduces the analysis of mold injection process:

1. Raw materials generally do not need to be dried. In some cases, they are baked at 80 ° C for 2 hours;

2, the molding temperature range is large, the heating and melting and curing speed is fast, so the molding cycle is generally short; temperature parameters: barrel temperature of about 200 ℃, the material temperature is too high to produce silver, and the material temperature is too low will make the transparency poor;

3, mold temperature control: mold temperature is generally 50-80 ℃;

4, GPPS has good fluidity, beer does not require high pressure (usually injection pressure is about 10Mpa), so as not to increase the stress in the plastic sheet-which may cause cracking (especially after painting);

5, the injection speed is high enough to weaken the water marks on the clip, but the injection speed is affected by the injection pressure, high speed may cause punches or dead corners such as sticky mold and top white crack;

6. Appropriate back pressure: if the back pressure is too low, the screw rotation will easily spill into the air, the barrel particle density is small, the plasticizing effect is poor, and the appearance quality of the plastic part is affected (generally the back pressure is 10-20kg / cm2); g ) 0.8-1.0mm.h) Glass fiber reinforced PS-GF30, barrel temperature 180-275 ° C, mold temperature 20-80 ° C, molding shrinkage 0.1-0.2, density 1.29 / cm3.

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For more information about Guangzhou mold processing , please pay attention to http://hotel-azura.com/

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