High-voltage electromagnetic flowmeter is a very precise instrument, widely used in petrochemical, electric power, steel, metallurgy and other fields.
High-voltage electromagnetic flowmeter is a very precise instrument, widely used in petrochemical, electric power, steel, metallurgy and other fields. In order to ensure the normal operation of the high-voltage electromagnetic flowmeter, the welding process must be strictly controlled. This article will introduce the specific steps of the high-pressure electromagnetic flowmeter flange welding process.
2. Preparations before welding
1. Check whether the equipment, tools and materials are complete.
2. Check the welding drawings to confirm whether the welding position and spacing meet the requirements.
3. Check the surface condition of the flange and pipe to ensure it is clean, free of oil, scratches, corrosion and other problems.
4. Select the appropriate welding wire and pad and match them according to the material of the flange and pipe.
5. Set the welding process parameters, such as voltage, current, speed, etc., to ensure that the welding effect meets the requirements.
3. Precautions during the welding process
1. Install the positioning clamp to ensure that the flange and pipe welds are in the correct position.
2. The ground wire of the welding equipment must be well grounded to ensure safety and reliability.
3. Maintain a certain arc length during the welding process to avoid causing adverse reactions.
4. Prevent overheating and avoid deformation or cracks.
5. Maintain the welding speed to ensure uniform weld quality.
6. Cool immediately after welding to avoid high temperature damage to the instrument.
IV. Selection and inspection methods of process parameters
1. Select the appropriate welding wire and pad, and determine the welding process parameters according to the pipe material.
2. Select appropriate welding current and voltage to ensure stable welding energy.
3. Select the appropriate welding speed according to equipment specifications and requirements, and control the weld formation time.
4. Use metal tensile tester and other inspection methods to inspect the welds to ensure that the welding quality meets standard requirements.
V. Summary
The high-pressure electromagnetic flowmeter flange welding process requires strict compliance with the prescribed steps and parameters to ensure the welding quality and the normal operation of the instrument. In actual operation, specific operations and adjustments should be made according to the actual situation, and the welding quality should be comprehensively inspected in conjunction with inspection methods.
Hangzhou Economic Development Area，Hangzhou 310018，China
