The Relationship Between High-Frequency Steel Pipe Welding Temperature, Extrusion Pressure, and Welding Speed ​​and the Shape of Internal and External Burrs

The shape of internal and external burrs on welded steel pipes has a certain logical relationship with the welding temperature, extrusion pressure, and welding speed. The operator can understand the true operating status of the pipe welding unit through the shape of internal and external burrs.

First, the relationship between the matching of welding process parameters and the shape of transverse internal burrs. 1. Transverse Internal Burr Shape: Isosceles
Welded Pipe Material: Trimmed Edge
Butt Weld: “I” Parallel
Welding Temperature: Solid State to Solution
Extrusion Pressure: High
Welding Speed: Appropriate

2. Transverse Internal Burr Shape: Double Peak
Welded Pipe Material: Rounded Edge
Butt Weld: “X” Butt
Welding Temperature: Solid State to Solution
Extrusion Pressure: High
Welding Speed: Appropriate

3. Transverse Internal Burr Shape: Wedge
Welded Pipe Material: Trimmed Edge/Rounded Edge
Butt Weld: “N” Staggered
Welding Temperature: Solution to Melt
Extrusion Pressure: Moderate
Welding Speed: Slow

4. Transverse Internal Burr Shape: Mushroom
Welded Pipe Material: Trimmed Edge/Rounded Edge
Butt Weld: “I” / “X”
Welding Temperature: Melt
Extrusion Pressure: High
Welding Speed: Slow

5. Transverse Internal Burr Shape: Centipede
Welded Pipe Material: Trimmed Edge/Rounded Edge
Butt Weld: “I” / “X”
Welding Temperature: Melting
Extrusion Pressure: Low
Welding Speed: Slow

Second, the Correlation between Speed, Temperature, and Extrusion Pressure Matching and External Burr Form
1. External Burr Form: Forked
Speed, Temperature, and Extrusion Pressure Matching: Welding heat is too low, welding speed is too fast, and extrusion pressure is too low.
Adjustment: Immediately reduce the welding speed, increase the welding heat, or increase the extrusion pressure.

2. External Burr Form: Straight
Speed, Temperature, and Extrusion Pressure Matching: Welding heat is too low, welding speed is too fast, and extrusion pressure is too low.
Adjustment: Appropriately increase welding heat, reduce the welding speed, or increase the extrusion pressure.

3. External Burr Form: Small Hilly
Speed, Temperature, and Extrusion Pressure Matching: Maintain current operation.
Adjustment: Normal production and careful observation.

4. External Burr Form: Large Hilly
Speed, Temperature, and Extrusion Pressure Matching: Welding heat is too high, welding speed is too low, and extrusion pressure is too high.
Adjustment: Immediately reduce the welding heat or speed up, or appropriately reduce the extrusion pressure.