国产精品爽爽ⅴa在线观看,免费中国大但人文艺术在线观看 ,午夜精品久久久久久久久,欧美人与动牲交zozo

Welcome to XX Bearing Technology Co., Ltd
CN|EN
Your location: Home -> Product display -> seam welder
  • Cement pipe rolling welding machine
< >

Cement pipe rolling welding machine

Roll welding machine is a machine used for roll welding. Roll welding, also known as circular seam welding, is a method of using a pair of roller electrodes instead of cylindrical electrodes for spot welding.

  • Cement pipe rolling welding machine
Details


Product Introduction:

Roll welding machine is a machine used for roll welding. Roll welding, also known as circular seam welding, is a method of using a pair of roller electrodes instead of cylindrical electrodes for spot welding. The welded workpiece moves between the roller plates, creating a sealed weld seam with overlapping fusion nuclei to weld the workpiece together. Generally, AC pulse current or amplitude modulation current can be used, and three-phase (single phase) rectification, intermediate frequency, and high-frequency DC current can also be used. Roll welding is widely used in thin plate welding of sealed containers in oil drums, cans, radiator, aircraft and automobile fuel tanks, rockets and missiles. The general welding thickness is within 3mm of the single plate.
Main features:
The weld seam of roll welding consists of one welding point, which can be divided into roll spot welding or airtight seam welding according to different core melting overlaps. The formation process of each solder joint, like spot welding, involves three stages: pressurization, heating melting, and cooling crystallization, but there are significant differences from spot welding. Due to the inevitable phenomenon of shunt, the distribution of current and thermal fields in the welding area has its own characteristics; The rolling disc that transmits pressure and is heated by electricity continuously rotates to change the welding position, so that the distribution of current and heat fields, as well as the crystallization characteristics of the melting zone, are all related to the speed of changing the position.
高碑店市| 交口县| 新乐市| 延川县| 大丰市| 东方市| 榆社县| 通州区| 剑阁县| 电白县| 文水县| 紫金县| 台江县| 崇阳县| 日照市| 共和县| 嘉义市| 昆明市| 郴州市| 石景山区| 昆明市| 梅河口市| 叶城县| 桃园县| 库车县| 沈阳市| 新余市| 台山市| 湘乡市| 呼和浩特市| 广河县| 苗栗市| 南部县| 滁州市| 泰来县| 卓尼县| 宁化县| 宝鸡市| 合肥市| 全州县| 平定县|