亚洲午夜成人片-日韩人妻无码系列专区-国产第一页浮力影院入口-宅男宅女精品国产av天堂

Welcome to Shenzhen Zhongyuan Plastic Co., Ltd!

News



Tel:(0755)27151698
Fax:(0755)27150611
Mailbox:szzyzcl@163.com / szzy@szzy99.com
Add:Building A1 and A2, No.1 Industrial Zone, yuliu property company, Gongming town, Bao'an District, Shenzhen
Industry information

當(dāng)前位置:

首頁 News Industry information

Precautions for injection molding

Release time:2024-06-05

1. Shrinkage in injection molding isInjection moldingIt is a very common problem, especially for plastic products with high surface quality requirements. Therefore, with the continuous improvement of injection molding technology, it is imperative to minimize the shrinkage of injection molding and improve product quality.

1.jpg


2. The shrinkage formed in the thicker part of plastic parts (such as ribs or protrusions) is more serious than that of adjacent parts. This is because the thicker part cools much slower than the surrounding area. Different cooling rates will lead to the formation of dents on the joint surface, which is called shrinkage marks. This defect seriously limits the design and molding of plastic products, especially large thick wall products such as TV inclined boxes, display boxes and so on. In fact, products with strict requirements such as household appliances need to remove shrinkage holes, while toys and other products with low surface quality requirements are allowed to have shrinkage marks during injection molding.


3. There may be one or more reasons for forming shrinkage marks in injection molding, including processing method, part geometry, material selection, mold design, etc. Geometry and material selection are usually decided by the raw material supplier and cannot be easily changed. However, in mold manufacturers, there are many factors related to mold design that may affect the shrinkage of injection molding. The design of cooling channel, gate type and gate size may have different effects. For example, a small gate, such as a tubular gate, cools much faster than a conical gate. Premature cooling of the gate will reduce the filling time of the cavity, thereby increasing the possibility of shrinkage marks. For molding workers, adjusting processing conditions is a way to solve the shrinkage problem in injection molding. Filling pressure and time significantly affect the shrinkage. After the part is filled, the excess material continues to fill the cavity to compensate for the shrinkage of the material. If the filling stage is too short, the shrinkage will intensify and eventually produce more or larger shrinkage marks. This method to solve the shrinkage of injection molding itself may not be able to reduce the shrinkage mark to a satisfactory degree, but the molding workers can adjust the filling conditions to improve the shrinkage mark.

Copyright: Shenzhen Zhongyuan Plastic Co., Ltd. | mold processing customized manufacturer. If you want to know the processing price of the factory, how much is it, and which is good, please contact us Yue ICP Bei No. 17060480
主站蜘蛛池模板: 无码国模产在线观看免费| 久久精品国产亚洲av不卡| 日韩精品久久久肉伦网站| 国产丝袜肉丝视频在线| 免费无码成人av在线播| 99精品国产高清一区二区麻豆 | 欧美乱大交xxxxx潮喷| 久久亚洲精品人成综合网| 中文字幕在线精品视频入口一区| 国产熟女一区二区三区四区五区| 国产乱码精品一品二品| 看黄a大片日本真人视频直播| 狠狠色丁香婷婷综合潮喷| 亚洲综合无码一区二区| 又色又爽又黄18禁美女裸身无遮挡 | 国产精品亚洲成在人线| 亚洲美女又黄又爽在线观看| 人妻无码中文专区久久五月婷 | 波多野结衣的av电影| 欧美老熟妇乱xxxxx| 奶头和荫蒂添的好舒服囗交| 亚洲av永久无码精品秋霞电影影院| 超碰97人人做人人爱少妇| 色妞av永久一区二区国产av| 人人爽人人澡人人人妻| 含羞草亚洲av无码久久精品| 亚洲av永久无码精品网站色欲| 国产日韩欧美| 国产精品美女乱子伦高潮| 国产98色在线 | 日韩| 久久亚洲av永久无码精品| 性无码免费一区二区三区在线| 成人免费无遮挡在线播放| 无码丰满熟妇| 97av麻豆蜜桃一区二区| 欧美色aⅴ欧美综合色| 国产喷水1区2区3区咪咪爱av| 亚洲av日韩av永久无码久久| 暴力调教一区二区三区| 国产特级毛片aaaaaa毛片| 中文字幕v亚洲ⅴv天堂|