国产精品久久久久成人免费,久久亚洲熟女cc98cm,亚洲愉拍99热成人精品,国产V片在线播放免费无码

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

Enquiry:

138-6185-1071

138-6185-1071

What are the main aspects of injection mold cooling water leakage

Injection mold cooling water leakage is a frequent occurrence, for many reasons, mainly in the following aspects:
The most occurs at the joint of the mold cooling water pipe. If water leakage is found, the sealing tape should be wound around the thread of the pipe joint and then tightened.
2, Due to long-term molding conditions, the waterproof ring inside the mold will be damaged, and the O-shaped waterproof rubber ring will easily harden and crack, resulting in water leakage. Some poorly installed waterproof rings can also cause seal failure. It is generally necessary to regularly check the installation position and sealing performance of the seal.
3, The hole wall of the cooling water hole is broken. This often happens when a new mold is tried. The wall thickness of the design is sufficient, but the hole wall is broken due to machining errors or post-processing. In most cases, leaking water holes can no longer be used.
4, Regularly repair the heating pipe and decompression pump and use. The heating tube is an effective heat transfer element and is very effective for core cooling of deep and deep structures. In the area where the cooling water is easy to pass, a one-way heating pipe is provided to reduce water leakage. In addition, the use of a vacuum pump to pump cooling water is also a method to prevent leakage of cooling water.
5, maintenance of the cooling water hole. It is easy to form scale in the cooling water hole, which hinders heat transfer. In severe cases, the water path is blocked and needs regular maintenance. For straight water holes, an iron bar that is 0.5 mm smaller than the diameter of the cooling water hole can be inserted and tapped with a hammer to remove scale and rust. For the cooling water pipe buried in the mold, the mold should be disassembled to remove rust.
After the inspection, the water leakage test should be carried out. The hand pressure pump is used to fill the water hole with water, and it is kept at a pressure of 2 MPa for 5 minutes. It is judged whether the water hole leaks by observing whether the water pressure is lowered. The water leakage can be blocked by mechanical fastening using elastic materials such as rubber and cork, and the room temperature curing type silica gel can be tried as a sealing material.
2018/08/02 10:11:16 6499 次

Hot News

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

亚洲精品无码永久在线观看男男| 亚洲av无码一区二区三区乱子伦 | 香蕉欧美成人精品av在线| 无码精品日韩专区第一页| 深夜a级毛片免费视频| 欧美三级韩国三级日本三斤| 久久久久久精品无码人妻| gogogo日本免费观看电视| 国产又爽又大又黄A片| 女人十八片毛片免费视频| 久久国产精品偷| 欧美大尺寸SUV| 国产精品污WWW一区二区三区| 精品国产午夜肉伦伦影院| 免费大黄网站| 久久精品国产亚洲av网站| 成人亚洲A片V一区二区三区蜜月 | 国产精品三级在线观看无码 | 无码国产精品一区二区高潮| 美女视频黄是免费| 国产精品99久久久久久 | 免费a级毛片无码a∨免费软件| 精品国产乱码久久久久久人妻| 欧美黑人又大又粗xxxxx| 久久久久久精品天堂无码中文字幕| 99精品免费久久久久久久久日本| 国产国产人免费人成免费视频| 色欲人妻AAAAAA无码| 国偷自产AV一区二区三区动漫| 桃花免费高清在线观看视频| 国产日韩成人内射视频| 欧美最猛性xxx| 又色又爽又高潮免费视频观看 | 亚洲精品国产摄像头| 夜夜精品无码一区二区三区| 国产精品99无码一区二区| 77777亚洲午夜久久多人| 精品人妻大屁股白浆无码| 99久久精品国产免费| 国产精品久久久久9999无码| 欧美老妇牲交videos|