Guangzhou Steel teach you: the coupling of steel
Guangzhou Steel's steel connection: connection welds, rivets, screwed. According to the degree of automation of welding technology it is usually divided into welding, semiautomatic and automatic welding of three. Weldability of steel: carbon equivalent (Ceq) represents, Ceq smaller, smaller steel hardening tendency, weldability better; on the contrary, Ceq, the greater the tendency of hardened steel, weldability on worse. Welding is a local heating of the process, during welding, when necessary, to take reasonable measures to eliminate weld residual stress and distortion.
(1) welding: welders must be certified; full penetration of a secondary weld ultrasonic testing should be used for internal shortcomings inspection, ultrasonic testing can not be judgment about the shortcomings, the use of radiation detection. Construction unit for the first time steel, welding materials, welding methods, welding procedure qualification should. Weld disadvantage usually have six categories: cracks, cavities, solid slag, lack of fusion, incomplete penetration, shape and other shortcomings.
(2) bolting Guangzhou Steel
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