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

国产午夜精品理论片| 久久无码专区国产精品s| 国产一产二产三精华液区别在哪里| app在线免费观看视频| 精品无码成人片一区二区98| 国产精品无码中文在线av| 久久精品这里热有精品| 二区国产好的精华液单品榜| 边做边爱mp3在线播放免费观看| 久久兔费黄a级毛片高清| 日韩精品无码一本二本三本| 国自产拍偷拍精品啪啪一区二区| 日产精品1区至六区有限公司| 少妇一晚三次一区二区三区| 日韩人妻精品一区二区三区视频 | 蜜桃成人无码区免费视频网站| 中文字幕人妻丝袜美腿乱| 国产亚洲精品久久久久久国模美| 中文人妻AV久久人妻水蜜桃| 亚洲欧美精品SUV| 亚洲日韩一区二区三区四区高清| 国产精品久久久久久人妻| 免费观看a级片| 国产精品免费一区二区三区四区| 中国人免费人做人爱的视频| julia ann 精品艳妇| 7777精品久久久大香线蕉| 久久久亚洲欧洲日产国码农村| 亚洲日产乱码一二三区别| 18成禁人10000视频免费| 玉女阁第一精品导航| 久久伊99综合婷婷久久伊| 国产精品成人一区二区三区| 国产精品99精品无码视亚| 欧美超级乱婬视频播放| 久久精品国产一区二区三| 国产在线视频一区二区三区| 久久精品国产男包| 又色又爽又高潮免费视频观看 | 天天躁日日躁狠狠躁人妻 | 欧美成人在线视频|