老师穿着旗袍肉色丝袜让我玩,亚洲综合网在线观看首页,被两个老头咬住吃奶野战,在线观看精品视频一区二区三区,厨房掀起少妇裙子挺进去 ,国产免费观看久久黄AV片,丰满人妻熟妇乱又伦精品视

Analysis of the Defects of Plastic Formation

2019-03-08 1691

The reasons for the shortcomings in the processing of plastic parts are as follows:

1. Injection material. Material has impurities or supplies from different suppliers, different batches from the same manufacturer, and different batches of material processing technology is different.

2. Injection Molding Machine. Check the function of each part of the injection molding machine is normal, and consider the influence of temperature, pressure, time and other reasons, control and adjust the injection molding machine.

3. Mold. Mould device should be appropriate, temperature should be correct, and injection parts should run smoothly in the mould.

4. Production and processing process. To ensure that the pressure, temperature and time are in line with the processing conditions provided by the material supplier, keep checking the accuracy of injection speed and technology.

5. Injection time, temperature, pressure and back force can affect the quality of plastic parts processing.


横峰县| 达州市| 犍为县| 淅川县| 得荣县| 义乌市| 昌邑市| 永昌县| 嵩明县| 宜兴市| 万年县| 迁安市| 板桥市| 巴里| 三穗县| 威远县| 江口县| 香格里拉县| 陆良县| 汽车| 崇文区| 许昌市| 泸溪县| 黑水县| 阿拉善右旗| 临夏县| 宝鸡市| 莲花县| 曲阜市| 阿勒泰市| 丰都县| 逊克县| 临夏县| 霍州市| 阳谷县| 昌图县| 河北省| 师宗县| 嫩江县| 兴仁县| 尚志市|