www.国产精品视频-www.国产视频-www.国产一区二区-www.国产一区二区三区-www.好吊妞-www.狠狠色

Your current location:Home > News & Letters > Welding knowledge

Composition and function of welding rod and selection principle of welding rod

2017-11-27
5631
Source:Original
  The electrode is composed of a metal core and coating consists of two parts, the main role is as the core electrode and filler metal; coating is the main function of the arc stability, protection, deoxidization, alloying and improve welding process.
  Basic principles of electrode selection:
  1) equal strength principle, that is, to choose the electrode with the same strength grade as base metal. Generally used for welding low carbon steel and low alloy steel.
  2) the principle of the same composition is to select the electrode with the same or similar chemical composition as the base metal. Generally used for welding heat-resistant steel, stainless steel and other metal materials.
  3) the principle of crack resistance should be chosen for the basic electrode with good crack resistance, so as to avoid cracks in the joint during welding and use. Generally used for welding structure with large rigidity, complex shape and dynamic load in use.
  4) the principle of anti porosity is limited by the welding process conditions, such as the oil and rust in the joints of butt welding parts, so the acid electrode with strong anti porosity ability should be selected to avoid the gas remaining in the weld during the welding process and form pores.
  5) low cost principle, in the premise of meeting the use requirements, as far as possible to choose good process performance, low cost and high efficiency of welding rod
More+

Recommend news

+86-731 8465 0818
主站蜘蛛池模板: 中文字幕一区二区在线视频 | 青青青手机视频在线观看 | 亚洲成人一级 | 日本在线观看高清不卡免v 日本在线观看a | 日本午夜视频在线观看 | 最近最新免费视频8 | 天天干天天操天天玩 | 日本卡一卡2卡3卡4精品卡无人区 | 天天拍拍夜夜出水 | 婷婷激情狠狠综合五月 | 亚洲国产欧美在线 | 视频在线91 | 日韩小视频在线播放 | 欧美一区在线播放 | 天天曰天天 | 婷婷久| 天堂在线最新版www中文 | 亚州综合 | 中文字幕高清免费不卡视频 | 全黄a一级毛片 | 五月激情啪啪网 | 天天干天天干天天干天天 | 亚洲天堂网站 | 日日摸夜夜添欧美一区 | 手机成人 | 亚洲视频在线观看一区 | 午夜久久久久久亚洲国产精品 | 亚洲成人日韩 | 一级人做人爰a全过程免费视频 | 最近在线观看免费完整视频 | 四虎在线免费播放 | 日本精品一区 | 日韩亚洲欧美一区二区三区 | 欧美一区二区三 | 日本天堂视频在线观看 | 亚洲天堂伦理 | 欧美亚洲网 | 色婷婷激婷婷深爱五月小说 | 一区二区三区精品视频 | 色成网 | 三级欧美|