人妻互换亂倫激情,日本xxxx高清色视频在线播放,影音先锋资源站,伊人久久大香线蕉av桃花岛

Welcome to [ Wuxi Funecon Precision Mould Plastic Co., Ltd. ] website! Home| Sitemap| Email
Moulding Your Future

Enquiry:

138-6185-1071

138-6185-1071

What is the impact of the number of times the injection mold is tested

1, The injection mold design has not undergone sufficient collective review, and the injection mold structure is unreasonable, so that the injection mold has to be improved several times after the test, so that the cost of the injection mold exceeds the budget.
If after several improvements, you can get it. It is fortunate. There are many cases that are unsatisfactory. Even if the injection mold is to be scrapped and reworked, the cost cannot be controlled. There are also some cases where the injection mold design is very good, but the processing of the injection mold is not in place, which makes the number of trial molds increase without any reason, directly increasing the cost of the injection mold. There is no objection to this problem, so many injection mold manufacturers have increased their investment in measuring equipment.
2, There is no selection of the molding process and the model of the injection molding machine during the test. It is obvious that the injection mold is very good, but the injection molded product is not ideal. The number of trials is increased without any reason, which directly increases the cost of the injection mold. This is a common problem in some small injection mold factories.
3, the physical properties of plastics are not fully understood, and even the shrinkage rate is not accurate, such a situation has occurred from time to time. Therefore, before designing the injection mold, it is necessary to understand the physical properties of the plastic, in order to effectively reduce the number of trials.
2018/08/02 10:02:36 6125 次

Hot News

Copy right of the 2018 Wuxi Funecon Precision Mould Plastic Co., Ltd. All Rights Reserved

色噜噜狠狠一区二区三区| 中文字幕乱码在线人视频| 国产老头老太作爱视频| 少妇人妻丰满做爰xxx| 亚洲日产乱码一二三区别| 特黄a级毛片免费视频| 国产欧美一区二区三区在线看| 久久九九久精品国产免费直播| 日欧一片内射va在线影院| 欧美人伦禁忌DVD放荡欲情| 扒开粉嫩小泬舌头伸进去| 美女与野兽免费观看| 成人电影免费在线观看| 他跨越山海而来| 男人狂桶女人高潮完整过程| 国产一区二区在线视频| 回民丰满少妇xxx性| 少妇大叫太大太粗太爽了a片小说| 啊灬用力灬啊灬啊灬啊灬a片男男| 高潮a片www张柏芝陈冠希| 国语我和子的乱视频| 丰满少妇a级毛片露出偷拍| 高h小月被几个老头调教| 在线观看电影| 日韩人妻无码精品无码中文字幕| 人妻用嘴含精大口吞精| 日本一区二区三区免费更新不卡| 精品人妻无码一区二区三区4| 国产亚洲精品麻豆一区二区| 欧美大荫蒂毛茸茸视频| www亚洲精品少妇裸乳一区二区| 中国妇被黑人xxx猛交| 97精品国产97久久久久久免费| 国产做a爰片毛片a片美国| 夜色88v精品国产亚洲av| 最近高清无吗免费看| 老师黑色双开真丝旗袍恩施视频| 国产精品成人久久久久久久| 亚洲av午夜福利精品香蕉麻豆| 竹菊精品久久久久久久99蜜桃| 乔家的儿女电视剧全集免费播放|