The spiral steel pipe uses a steel roll plate as the raw material, which is often squeezed warmly, and the spiral -shaped bending is formed. The spiral steel pipe made of inner and outer seam welded with automatic double -sided arc welding process is automatically welded. The raw materials are steel rolls, welded wires, and solder.
The spiral tube decarburization disposal directly affects its service life, which is its quality. It can be seen that the effect of decarburized disposal on the spiral tube. If the surface is described, the strength and abrasion resistance of the spiral tube will decrease. It directly affects the service life of the spiral tube. If the decarburization layer on the spiral tube, the surface layer of the spiral tube should decrease hard, and during the quenching process, the surface of the workpiece will form a crack due to the volume of the volume of the inner layer.
The medium that constitutes the surface of the spiral tube surface is mainly oxidized gases such as oxygen, water vapor and carbon dioxide. When these gases of spiral tube contact, it will form the oxidation and decarburization of the spiral tube. Therefore, controlling carbon dioxide and carbon dioxide in the furnace The proportion is also very important.
Fundamentally disposal the surface of the spiral tube surface decarburization primary heat disposal of the work process for disposal, because the decarburization and spiral tube are carried out together. During the heat disposal process, try to prevent the spiral tube from contact with the air. The appearance.
