青青久久99久久99久久999,亚洲欧美偷拍另类A∨,成人在线精品视频,色婷婷亚洲精品综合影院,人妻少妇久久久综合黑人AV,久久爆乳一区二区免费播放,亚洲操综合,久久这里只有精品视频99,欧美精品一区二区三区在线不卡,久久蜜桃亚洲一区二区

<strike id="a6w2m"><menu id="a6w2m"></menu></strike>
<strike id="a6w2m"><input id="a6w2m"></input></strike>
  • <strike id="a6w2m"></strike>
    <strike id="a6w2m"><menu id="a6w2m"></menu></strike>

    Jiangmen hardware accessories factory analyzes its hardware molds according to the combination of processes, which are divided into?

    2019-12-29 969

      Life often see mold, then hardware mold according to the combination of processes, which can be divided into several?

      1. Single process module

      In one stroke of the press, only one stamping process is completed.

      2. Compound module

      There is only one working position. In one stroke of the press, two or more stamping processes are completed on the same working position hardware mold at the same time.

      3. Progressive die (also called continuous die)

      In the feeding direction of the blank, there are two or more stations. In one stroke of the press, two or more stamping processes are completed in different stations one by one. Continuous die (progressive die), press in a stamping stroke, using strip stamping raw materials, in a pair of die with several different stations at the same time to complete multiple stamping process of cold stamping die, die every time the completion of a stamping, the strip fixed distance movement once, until the completion of the product. In the process of continuous die stamping, the material strip always moves in one direction; the progressive die moves in two or more directions after the material strip inside the die is cut off; the automatic continuous die completes the material strip feeding inside the die; the mechanical hand or other automatic facilities of stamping die with different processes are used in a stamping production chain to complete the work piece by using the die or part movement Stamping rated die is called multi position die.

      Finally, let's popularize one of the key parts in the mold accessories - mold spring.

      Mold spring includes: Japanese standard mold spring, German standard mold spring, spring, polyurethane spring, usually mold spring refers to rectangular mold spring. Die spring is widely used in stamping die, metal die-casting die, plastic mold and other elastic motion precision mechanical equipment, automobile and other fields. The die spring is generally made of chromium alloy steel. Chromium alloy spring steel has the characteristics of high temperature resistance, high rigidity and long service life. The rectangular die spring has the characteristics of small volume, good elasticity, large rigidity, high precision, rectangular material, color separation spraying (plating) on the surface to distinguish different loads, beautiful appearance, etc.

      Jiangmen hardware accessories factory http://www.letwy.com//


    TheAV一区在线播放| √天堂中文官网8在线| 国产区第一页| 亚洲日韩成人av无码网站| 性欧美乱妇高清come| 人与禽性视频77777| 亚洲av成人精品网站在线播放| 欧美丰满大乳高跟鞋| 久久香综合精品久久伊人| 98国产在线| 九色综合久久综合欧美97| 成人影院一区二区三区| 国产亚洲3p无码一区二区| 成人影院一区二区三区| 日韩va中文字幕无码免费| av专区在线精品一区| 亚洲精品无码成人久久| 久久999精品久久久久久黑人| 亚洲国产精品99久久久无色无码| 亚洲国产精品无码久久一区二区分 | 午夜男女很黄的视频| 久久精品国产亚洲av麻豆| 一本一道色欲综合网中文字幕| 精品无码av一区二区三区| 色噜噜狠狠综曰曰曰| 午夜精品久久久久久久无码| 中文字幕日韩精品无码内射| 中文字幕日本不卡| 久久大香香蕉国产拍国| 国产suv精品一区二区33| 无遮掩60分钟从头啪到尾| 无码超级大爆乳在线播放国产| 三级做A全过程在线观看| aa级亚洲电影| 又黄又爽又色又刺激的视频| 熟妇人妻无码XXX视频| 最近mv中文字幕国语免费| 妺妺窝人体色WWW婷婷| 国产一区二区在线视频| 欧美性猛交XXXX乱大交3| 2019精品手机国产品在线|