<em id="b06jl"></em>
      <tfoot id="b06jl"></tfoot>
      <tt id="b06jl"></tt>

        1. <style id="b06jl"></style>

              狠狠干奇米,国产igao,亚卅AV,污污内射在线观看一区二区少妇,丝袜美腿亚洲综合,日日撸日日干,91色鬼,夜夜国自一区
              您好,歡迎來到易龍商務網!
              文章詳情

              crane生產品牌企業【圣霖國際】

              發布時間:2020-12-21 06:25  

              【廣告】







              實踐表明,帶雙鍍槽的軸頭在使用過程中,鑲槽壁容易崩裂,目前常用易加工的帶平臺的袖頭代替雙因槽的抽頭。

              直徑超過400mm的冷軋軋輥,在鍛造后,多半在中心饅一個670一250mm的通7L。這樣,一力面可以使軋輥經熱處理店的內應力分朽均勾;另一方面在軋輥表面淬火時,可對軋輥通水冷卻,提高淬火效果。


              Practice shows that, with double bath head is in use, insert groove wall is easy to crack, at present common processing platform with the cuff instead of double slot for tap.

              Cold roll diameter of more than 400mm, after forging, mostly in the 7L center. A 670 250mm. So, on one hand can make the roller stress heat treatment shop allocation hook are; on the other hand, the roll surface quenching, the water cooling roller, improve the quenching effect.




              軋輥的無損檢測通常用超聲波探傷儀進行。冷軋輥探傷標準中通常把輥身依受力情況分成表面區、中心區和中間區,然后依斷裂力學原理分別規定各區允許存在的缺陷的臨界尺寸。



              Nondestructive testing of rolls is usually carried out by ultrasonic flaw detectors. In the testing standard of cold roll, the roll body is usually divided into the surface area, the center area and the middle area according to the force condition, and then the critical dimensi of the defects are allowed in each area according to the principle of fracture mechanics.


              (1)堆焊前需先將軋輥輥身表面的疲勞層或缺陷,尤其是裂紋必須徹底清除;  

              (2)在堆焊時,為了防止裂紋的產生,必須先加工軋輥輥身預熱,預熱溫度根據軋輥輥及堆焊材料而定。

              (1) before welding, the fatigue layer or defect of the roller body surface must be first removed, especially the crack must be thoroughly removed.

              (2) in the process of surfacing, in order to prevent cracks, the roller body must be pre heated, and the preheating temperature should be determined according to roll rolls and surfacing materials.




              生產長材產品的軋機種類繁多,因此,軋機類型的選擇、布局,軋輥材質的選擇、軋輥尺寸的確定,選擇范圍也非常廣。同時,不同的軋機所選擇的軋輥也是不相同的,需要根據生產要求選擇軋輥。



              There are a wide variety of rolling mills to produce long timber products. Therefore, the selection and layout of the type of rolling mill, the selection of the material of the roll and the determination of the size of the roll are also very wide. At the same time, the rolls chosen by  rolling mills are also the roller should be selected according to the production requirements.


              主站蜘蛛池模板: 人妻丝袜中文无码AV影音先锋专区 | 国产亚洲婷婷香蕉久久精品| 人人爽人人爽人人爽| 天天狠天天透天天伊人| 久久精品水蜜桃av综合天堂| 青青草国产精品一区二区| 真实国产乱子伦视频| jk白丝喷浆| 久久AV高潮AV| 91资源总站| free性开放小少妇| 大香伊蕉在人线国产最新2005 | 偷拍av一区二区三区| 97超级碰碰人妻中文字幕| 色www视频永久免费| 中文字幕欧美人妻精品| 少妇被粗大猛进进出出| 中国少妇无码专区| 五月天激情婷婷婷久久| 亚洲女同精品久久女同| 你懂的国产在线| 91免费小视频| 亚洲视频在线观看| 久热这里只国产精品视频| 色九九视频| 在线观看国产精品日韩av| 夜夜欢天天干| 人妻放荡乱h文| 婷婷综合亚洲| 1024你懂的日韩人妻学生| 一本无码人妻在中文字幕免费| 自拍视频在线观看成人| 精品不卡一区二区| 亚洲天堂网在线播放| 午夜欧美精品久久久久久久| 精品人妻系列无码人妻免费视频| 久久精品人人做人人爽97| 国产欧美日韩免费看AⅤ视频| 国产黄色自拍视频| 原平市| 中文字幕无码成人片|