A valve welding method
A welding method and valve technology, applied in welding equipment, welding equipment, auxiliary welding equipment, etc., can solve the problems of large deformation, high work intensity, and large heat input, so as to reduce welding deformation, ensure welding quality, reduce The effect of opening and closing torque
Active Publication Date: 2022-05-31
JIANGSU SHENTONG VALVE
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Problems solved by technology
[0003] The existing manual tungsten inert gas shielded arc welding is a non-high-energy beam welding method, which has large heat input, large welding deformation, poor weld appearance quality, low efficiency, and high work intensity; at the same time, the bellows is made of several thin layers. The steel pipe is made of hydraulic pressure, and the total thickness is not more than 1mm, so the bellows is easy to be welded through; because the diameter of the valve shaft is not more than 10mm, the deformation of the valve shaft after welding is large, and the coaxiality sometimes cannot meet the requirements
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A valve welding method, the argon gas is passed into the inner cavity of the bellows, the welding device automatically completes the welding between the bellows and the upper joint and the lower joint in the self-melting mode, and the welding device automatically completes the welding between the valve shaft and the upper joint in the wire adding mode. Welding between joints. The invention has the beneficial effects of reducing welding deformation, ensuring welding quality, improving work efficiency, reducing the opening and closing torque of the instrument valve, improving the sealing function of the instrument valve and prolonging the service life.
Description
A valve welding method technical field [0001] The present invention relates to a valve welding method. Background technique [0002] The assembly of the bellows, the upper and lower joints and the valve shaft is the key component of the instrument valve, and has a very important role. The welding quality between the bellows and the upper and lower joints and the welding quality between the valve shaft and the upper joint are directly related to the performance of the instrument valve. Opening and closing torque, sealing function and service life. Existing manual tungsten inert gas shielded arc welding belongs to non-high-energy beam welding method, and the heat input is large, and the welding changes. The shape is large, the appearance quality of the weld is poor, the efficiency is low, and the working strength is high; at the same time, the bellows is hydraulically formed by several layers of thin steel pipes, and And the total thickness is not more than 1mm, which ...
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IPC IPC(8): B23K31/02B23K37/00B23K37/04
CPCB23K31/02B23K37/00B23K37/0435
Inventor 汤丹施俊杰倪凯凯牛小龙姚鑫磊秦金健
Owner JIANGSU SHENTONG VALVE