Processing methods of stainless steel square tube fittings

1. The price of pipe fittings is divided into forging, stamping, rolling, rolling, bending and forming, expansion and other methods. Now we introduce several processing methods, as follows:

2. Forging method: Use a forging machine to squeeze one end or part of the pipe to reduce the outer diameter. Common forging machines are rotary, connecting rod and roller.

3. Stamping method: Use a tapered core to expand the tube end to the required size and shape on the punch.

4. Expansion method: One is to put the rubber into the test tube and compress it with a punch above to make the test tube protrude. Another method is to use hydraulic expansion to create liquid in the middle of the tube. The pressure of the carcass causes the tube to expand into the desired shape. Most production of corrugated pipes uses this method.

5. Bending forming method: There are three methods, one method is called stretching method, the other method is called stamping method, and the third roller method has 3-4 rollers, two fixed rollers, and an adjusting roller. Adjust the fixed roller distance to complete the pipe bending.

6. Roller method: Place the core in the tube and press the periphery with a roller to perform round edge processing.

7. Rolling method: Usually without using a mandrel, it is suitable for the inner round edge of thick-walled pipes.

The quality advantage of stainless steel square pipe continuous casting billet stainless steel bare plate is mainly concentrated in the fact that the unsharpening rate of the outer surface of the billet, except the head and tail, has reached more than 70%, and the total surface grinding rate has reached 99.15. %. To achieve this, the molten steel must be refined. Achieve low oxygen and low sulfur content, do large-volume metallurgy, accurately control the temperature of molten steel, achieve oxidation-free pouring, and further reduce inclusion content.