Share 79 welding common sense, beginners remember not only save, but also memorize oh! 1. Mechanical properties of metal include strength, plasticity, hard seat, toughness, fatigue strength, etc. 2, hardness indicators can be divided into Brinell hardness, Rockwell hardness, Vickers hardness and other three. 3. The performance of metal materials to conduct heat is called…
Basic professional terms, welders or to know. You can’t just burn. You don’t know anything else. A electrode from head to tail, there are several steps, in case the film is not qualified to find the problem, know the problem in which step. One question three do not know, dry for many years or a…
Single-sided welding double-sided forming is a single-sided welding way to obtain double-sided forming of the weld, can omit the flip welding parts and back root cleaning process, especially suitable for the situation can not be double-sided welding. Generally, there are two welding methods: intermittent arc welding (arc welding and continuous arc welding (continuous arc welding).…
Pipe 6GR welding definition The axis of the pipe is at a 45° Angle to the horizontal plane, and the position is fixed and not allowed to change. The outer diameter of the barrier ring is about 300mm larger than that of the thick-walled pipe, and it is installed on the outer edge of the…
When argon arc welding is used to weld stainless steel, due to the high affinity of stainless steel and oxygen, if the welding seam protection measures are not taken, the weld metal on the back is easily oxidized during the welding process, the alloying elements are burned, and welding defects are easily generated, causing The…
When welding stainless steel by argon arc welding, due to the high affinity of stainless steel and oxygen, if the welding seam protection measures are not taken, the weld metal on the back is easily oxidized during the welding process, the alloying elements are burned, and welding defects are easily generated, causing The mechanical properties…
(1) arc ignition — arc ignition by continuous arc welding When welding with alkaline electrode, in the arc starting process, due to less slag, less protective gas in the arc and other reasons, so that the molten pool protection effect is not good, the weld is very prone to dense pores, mostly N2 pores. In…
Ride-on tube sheet welding requires root penetration and requires good backside forming, so the operation is difficult. According to different spatial positions, riding tube sheet welding can be divided into three types: vertical fixed fillet welding, vertical fixed elevation fillet welding and horizontal fixed welding. Today, I will talk with you about the vertical fixed…
The market background Compared with high-end manufacturing fields such as industrial machinery, aerospace and automobiles, agricultural machinery manufacturing has always lagged behind them. In order to promote the development of agricultural modernization, it is necessary to strengthen the application of laser cladding technology in repairing and strengthening agricultural machinery. Draw lessons from other fields of…
The market background China is one of the few agricultural countries in the world. With the accelerating pace of reform and opening up, China began to promote agricultural mechanization and automation development on a large scale. According to statistics, in 2000 our country agricultural mechanization degree already reached 48%. However, there is still a big…
