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//


    久久久久久免费一区二区三区| 农村乱人伦一区二区| 大肉大捧一进一出好爽视频| 欧美熟妇色xxxx| 一边摸一边叫床一边爽| 人妻体内射精一区二区| 久久亚洲国产精品五月天婷| 亚洲欧洲日产国码无码久久99| 人人妻人人澡人人爽曰本| 无码专区国产精品视频| AV中文字幕网免费观看| 在线欧美中文字幕农村电影| 色噜噜狠狠色综合网| 日日摸夜夜添夜夜添毛片性色AV| 又色又爽又黄的视频国内| 十八禁无码免费网站| 狠狠色婷婷久久一区二区三区| 亚洲综合欧美在线一区在线播放| 黄色视频在线免费观看| 乌克兰丰满女人a级毛片右手影院| 久久综合伊人77777| 亚洲爆乳成av人在线视水卜| 色婷婷综合中文久久一本| 婷婷无套内射影院| japan黑人极大黑炮| 四虎影视成人永久免费观看视频| 国产在线精品一区二区中文| 国内精品久久久久久99| 日本在线视频WWW色影响| 国产在视频线精品视频| 国产色无码专区在线观看| 三上悠亚在线精品二区| 乱人伦人妻精品一区二区| 日本边添边摸边做边爱喷水| 久久综合噜噜激激的五月天| 少妇人妻精品一区二区| 国产在线精品一区在线观看| 青青草原综合久久大伊人精品 | 校花高潮抽搐冒白浆视频| 国产精品第12页| 成人片黄网站a毛片免费|