How to control a straight seam steel pipe extrusion pressure

How to control a straight seam steel pipe extrusion pressure.

 

Straight seam steel pipe used in the construction industry, Petroleum Geology of drill pipe the petrochemical cracking tubes, boiler tubes, bearing tube, as well as cars, tractors, aircraft precision structural tube. Straight seam steel pipe has a relatively simple process, rapid continuous production characteristics of a wide range of applications in civil construction, petrochemical, light industry and other sectors. Used for transporting low-pressure fluid, or made into a variety of engineering components and light industrial products.

After the two edges of the blank tube is heated to the welding temperature in the extrusion of squeeze rollers form a common metal grain mutual penetration, crystallization, and eventually form a solid weld. If the extrusion pressure is too small, the number of forming a common crystal, the strength of the weld metal is decreased, the force will produce cracking; if the pressing force is too large, will cause the molten state of the metal is extruded weld.

Produces weld after welding and extrusion welding scars, you need to clear. Clear fixed cutter on the rack, and rely on the rapid movement of the welded pipe, welding scars Calibrating. The welded pipe inside burr general not clear.

Weld quality continues to improve, the growing number of straight seam steel pipes of different specifications, instead of seamless steel pipes and in more and more areas. Straight seam steel pipe divided into Longitudinal and spiral steel pipe weld form. Longitudinal production process is simple, high production efficiency, and low cost.