<abbr id="cpbl9"></abbr>
  • <big id="cpbl9"></big>

      <i id="cpbl9"></i>
      国产又黄又爽又刺激的免费网址,成人国产精品免费视频,日本无遮挡边做边爱边摸,福利所第一导航福利,欧美日韩国产一区二区三区不卡,午夜福利理论片在线观看,中文色码中文在线,亚洲浮力影院久久久久久
      Service Hotline
      086-577-86923687
      Current Location:Home - News - Products Knowledge
      thermal stress generated by processing stainless steel head
      Release Time:2011-11-29  Views :
      Stainless steel head due to the inconsistent surface and center cooling rate and time, the occurrence of thermal stress. Stainless steel head the workpiece surface pressure and heart Ministry tension under the action of thermal stress. This phenomenon is cooled velocity, material composition and heat treatment and other factors.
       
      Stainless steel during heat treatment due to the change in the organization that is the transformation of austenite to martensite, accompanied by an increase in specific volume expansion in volume of the workpiece, the various parts of the workpiece has a phase change, causing the volume grew inconsistency of the stress.
       
      The end result stainless steel head the surface tissue stress is tensile stress, the heart portion compressive stress, and thermal stress exactly the opposite. The stress in the workpiece size and cooling rate of martensite transformation zone factor, shape, chemical composition of the material.
       
      Thermal stress before organizational changes it has produced a stainless steel head, and the stress is generated in the organizational transformation process, the entire cooling process, heat stress and the results of the stress combined effects, that is, the work actually present stress . The results of these two combined effects of stress is very complex, being affected by many factors, such as composition, shape, heat treatment and so on. Only two types, namely thermal stress and stress, the role of the opposite direction when the two offset its development process, the role of the same direction both mutual superposition.
      Key Words : 不銹鋼封頭
      Products
      Elliptical head
      Elliptical head
      Butterfly head
      Butterfly head
      Spherical head spin edge
      Spherical head spin edge
      Flat Head
      Flat Head
      Spherical head
      Spherical head
      Bow bottom head
      Bow bottom head
      Conical head
      Conical head
      Spherical cap shaped head
      Spherical cap shaped head
      Insulation panel
      Insulation panel
      Expansion Joints
      Expansion Joints
      Jacket (cylinder) rotation side
      Jacket (cylinder) rotation side
      Manhole flange
      Manhole flange
      NAVIGATION
      Wenzhou Shangshang Metal Products Co., Ltd.
      Add : 208,Zhanhong Road,Dushan,Longwan CentralIndustry,Wenzhou
      Tel : 086-577-86923687 85981288  Fax : 086-577-86913687
      All Rights Reserved © 2016 Wenzhou Shangshang Metal Products Co., Ltd    Zhejiang ICP No. 08,005,782
      • Follow Us

        Follow Us

      主站蜘蛛池模板: 亚洲中文字幕国产精品| 精品少妇爆乳无码aⅴ区| 自拍偷拍亚洲天堂| 97久久精品人人澡人人爽| 久久国产精品久久精品国产| 99激情| 无码视频一区二区三区| 亚洲熟女食品| 久久久噜噜噜久久| 精品国产女同疯狂摩擦2| 亚洲人妻.com| 中文字幕丝袜精品久久 | 国产精品18久久久久久麻辣| 青青草原国产精品啪啪视频| 国产丝袜在线播放| 日韩人妻无码网站| 国产精品天天干| 狼人久久综合| 国产制服丝袜在线| 五十路熟女一区二区三区| 人妻日韩精品中文字幕| 6699嫩草久久久精品影院| 久草手机在线| 国产白浆一区二区三区| 久久婷婷国产综合精品青草| 91大神在线精品视频一区| 99精品国产在热久久婷婷| 大香蕉综合网| 日韩精品网站| 欲色aV一区二区三区人妻无码| 国产福利一区二区在线精品| 狠狠色综合久久丁香婷婷| 伊人无码视频| 精品久久久久久无码人妻蜜桃| 亚洲成人黄色网| 国产爆乳无码一区二区麻豆| 内射网站| 95国产精品| 国内a片| 人妻无码久久一区二区三区免费| 欧美日视频|