91精品国产91_国产伦精品免费视频_日韩久久一级片_国产精品美女免费看

Patent Operation Platform

Patent

[CN 202010279194.9] Preparation method of magnesium alloy profile for vertical hydraulic press by large deformation compound extrusion


[CN 202010279194.9] A Preparation Method for Large Deformation Composite Extrusion of Magnesium Alloy Profile for Vertical Hydraulic Press Title: A Preparation Method for Large Deformation Composite Extrusion of Magnesium Alloy Profile for Vertical Hydraulic Press Application Number: CN 202010279194.9 Applicant: north university of china Application Date: 2020-4-10 Patent Type: Application for the Invention The present invention discloses a preparation method for large deformation composite extrusion of magnesium alloy profile for vertical hydraulic press, including ① blanking, ② homogenization treatment, ③ The blank and the die are heated and kept warm. ④ Apply lubricant and put the blank into the positive extrusion cavity. ⑤ Extrude the blank forward. The blank is extruded into the material storage cavity through the sizing belt. ⑥ The blank continues to flow under pressure until it contacts the bottom of the material storage cavity. The blank flows radially and gradually fills the space in the material storage cavity. During this process, the blank is upset and deformed. ⑦ It is pressed down by the punch, the billet metal begins to flow to the radial cavity extrusion opening communicated with both sides of the storage cavity, and lateral extrusion deformation occurs. When the punch stroke ends, the lateral extrusion process also ends, ⑧ demoulding. This case realizes the positive extrusion-rough-side extrusion large plastic deformation once forming, improves the variable, enriches the stress strain state, improves the organization and weakens the texture strength, effectively reduces the production process, and adapts to the market economic prospects of our country.

主站蜘蛛池模板: 欧美日韩国产免费一区二区三区 | 中文字幕无码不卡免费视频 | 国产精品久久久久久久久久久不卡| 国产精品亚发布| 久久国产精品视频在线观看| 国产精品美女久久久久av超清 | 日本精品一区二区三区四区| 91免费欧美精品| 国语自产精品视频在线看| 久久久久久成人| 欧美人成在线视频| 无码人妻精品一区二区蜜桃百度| 91av国产在线| 亚洲午夜精品久久久久久人妖| 国产日产欧美一区二区| 久久精品国产电影| 欧美久久久久久V| 欧美专区国产专区| 免费看又黄又无码的网站| 欧美日韩一区在线视频| 欧美日韩高清在线观看| 久久久久久亚洲精品不卡| 久久久91精品| 国产日韩在线观看av| 国产精品免费观看久久| 国产精品久久色| 欧美激情网友自拍| 国产精品美女久久久久av超清| 精品日韩在线播放| 国产综合香蕉五月婷在线| 国产精品毛片va一区二区三区 | 欧美视频在线播放一区| 亚洲欧美综合一区| 国产日韩一区二区在线观看| 国精产品一区一区三区视频| 国产精品小说在线| 国产成人综合精品| 亚洲综合在线做性V| 亚洲精品免费av| 日韩一级片一区二区| 欧美日韩在线不卡视频|