精品成人A片久久久久久不卡三区,91肥熟国产老肥熟女50p,91肥熟国产老肥熟女50p,无码人妻一区二区三区三
Welcome to the website of Qingdao Hanao Machinery Co., Ltd.! Chinese  |  English
Current position: Home > News> Details

Analysis of product characteristics of rubber parts

Issuing time:2019/7/23 11:48:36

We know that rubber fittings are widely used because of their excellent performance, so today we will analyze the performance of rubber fittings together!

1. The rubber parts are made of rubber raw materials and mixed with rubber. The rubber is made of rubber. The rubber is used as a raw material according to the characteristics of the rubber parts required, and the hardness of the required product is determined. The product is molded and molded by a rubber flat vulcanizing machine. After the product is formed, it is processed by flashing to smooth the surface of the product without burr.

2. Rubber is a hot-melt thermosetting elastomer, and plastic is hot-melt and cold-set. Because of the different types of sulfides, the temperature range of the curing of rubber is also quite different, even due to climate change, indoor temperature and humidity. Therefore, the production conditions of rubber parts need to be adjusted at any time. If not, the quality of rubber parts may be different.

3. When the rubber parts are molded, after the large pressure is pressed, the cohesive force prepared by the elastic body cannot be eliminated. When the mold is released from the mold, the extremely unstable shrinkage is often generated, and it takes a period of time to be stable and stable. Therefore, when a rubber fitting is designed at the beginning, regardless of the formula or the mold, it is necessary to carefully calculate the fit. If not, the size of the rubber fitting is likely to be unstable, resulting in a low quality of the rubber fitting.

Copyright:Qingdao Hanao Machinery Co., Ltd. 2019 All Rights Reserved  Technical Support: wangsouwangluo
免费的黄色的视频网站 | 欧美黑人一级A片免费看 | 四川少BBB搡BBB爽爽爽 | 日本真人做受120秒试看 | 亚洲欧美日韩国产 | 国产精品 国产原神 | 国产精品久久久久久一级毛片探花 | 国产人妻人伦精品熟女A玄幻 | 黄片儿高清无码免费观看 | 国产精品久久久久久中文字 | 又黄又爽又无遮挡 | 亚洲自拍偷拍中文无码 | 国产精品探花熟女AV | 国产成人午夜精品无码区久久麻豆 | 一级a免一级a做免费线看内裤游戏 | 成人综合网一区二区 | 大战熟女丰满人妻AV | 久久AV一区二区三区 | 亚洲AV无码乱码情品国产 | 日本一级A片免费看奶头 | 黄色视频在线播放网站 | 国产又大又粗又爽的毛片 | 真实国产亂伦wwwhd | 近親相姦中出C親子中文字幕小说 | 精品黑料一区二区三区 | 韩国青草自慰喷水无码 | 乱码丰满人妻一二三区痴汉电车 | 一区二区三区四区在线视频 | 国产精品羞羞无码久久久莉榴花 | Va.日韩人妻在线观看 | 欧美特一级aaaaa | 国产乱free国语对白 | 日本黄色视频网站大全 | 337P粉嫩大胆色噜噜嚕动态图 | 欧美熟妇白嫩大屁Ⅴ视界啪啪 | 少妇风流欧美精品A片 | 特级婬片A片AAA毛多水多动漫 | 韩国无码电影在线观看 | 蜜桃无码在线观看视频 | 亚洲熟妇色 英文 | 成a人在线观看一区红桃 |