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Structure description of all welded ball valve and stress of root gap of joint

Release date: December 10, 2018

The structure description of all welded ball valve and the stress of the root gap of the joint, high sealing reduced diameter full welded ball valve includes a valve body, the valve seat is connected inside the valve body, the valve cover is installed on the upper part of the valve cover, the valve stem is installed inside the valve cover, the fastener is connected with the valve rod, the spring assembly is installed between the fastener and the valve rod, the sealing device is installed at the lower part of the spring assembly, and the valve cover is at the lower end A sealing sleeve is installed between the rods.

 All welded ball valve

The stress concentration, residual stress and poor organization of the root gap of the welded joint of the welded ball valve have become the weak link in the valve body structure, which has attracted the attention of the valve industry at home and abroad. However, there is no relevant report to solve this problem, which has become a hidden danger of the boundary integrity of the product structure.

All welded ball valve is made of metal, and the metal will be corroded by a series of reasons such as temperature, sulfide contained in lubricating material, stability of acid resistance, duration of contact with medium and catalysis of metal on nitriding process.

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