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   Author  Topic: Self protective flux cored wire  (Read 171 times)
qizhen0926
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Self protective flux cored wire
« on: Jun 6th, 2018, 4:23am »		 Quote Quote Modify Modify Remove Remove
In 1990s, Kobelco and other companies in Japan developed a bottom welding wire. In recent years, our country has developed and developed a stainless steel bottom welding wire, such as TGF308, TGF308L, TGF309, TGF316L, TGF347, etc., and has been applied to practical construction, and has achieved good results. We have successfully applied this method.
The protection mechanism of the +TIG process for stainless steel bottom welding wire is that the back weld is protected by the metallurgical reaction of the molten slag produced by the welding wire melting and the metallurgical reaction of its alloy elements. The front welds are protected by argon, slag and alloy elements.Stainless Steel Products Of Aisi 306 Stainless Steel Coil Strip
In this process, attention should be paid to the following operation points: in the process of welding, the correct angle between welding wire, welding wire and welding part is maintained. The ideal welding torch is 70 degree to 80 degrees, and the angle between welding wire and weld is 15 degree to 20 degrees; the temperature of the weld pool is correctly controlled, the angle between welding and welding parts is changed and the welding speed is changed by changing welding. And so on to change the bath temperature, so as to ensure the weld appearance is beautiful (width and width consistency, no concave, over convex defects).
310 2inch stainless steel seamless pipe 304
At the time of operation, the current should be slightly larger than that of welding solid core wire. The welding handle should be swung slightly to accelerate the separation of molten iron and melted drug skin, to facilitate the observation of the pool and to control the penetration of the welding; when filling the wire, it is best to send to the 1/2 of the molten pool and press it slightly to ensure the penetration of the root and prevent the concave.
During the welding process, the wire should be sent and removed regularly, and the welding wire is kept under the protection of argon so as to avoid the oxidation of the end of the wire and influence the quality of the welding. Attention should be paid to the welding quality of the arc and arc, and the spot welding place should be grinded into 45 degrees slope at the arc, and the defects of the arc pit and shrinkage should be paid attention to when the arc is closed.
It is used to weld bottom welding with drug skin welding wire, without argon gas in the weld. The welder is easy to operate, fast, efficient and low cost. At the same time, it can guarantee the quality of welding (in the revamping project of UVP, we use this method to weld the joint and repair mouth of 28 channels and the pass rate of 100%). It is worth popularizing.
ASTM hot rolled 201 stainless steel angle bar hot rolled
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