Stainless Steel Pipes And Tubes Usually In A Toroidal Furnace

Stainless Steel Pipes And Tubes Usually in a toroidal furnace

(1) stainless steel tube blank preparation. (Such as pickling) and cold centering, etc.), such as stainless steel tube blank, stainless steel tube cutting (cutting or gas cutting), peeling grinding, flaw detection, and high alloy stainless steel tube surface treatment (such as pickling) and cold centering.

(2) stainless steel tube heating. Usually in the annular heating furnace or inclined bottom tube heating furnace for heating, tube billet generally after the heat centering to the perforation process.

(3) perforation. A solid round bar is rolled into a hollow, thick-walled stainless steel tube, usually perforated using a two-roll or three-roll oblique roll piercing machine. If the stainless steel tube is a steel ingot or a continuous casting billet, it can be perforated on a hydraulic press or on a two roll (vertical rolling) pressure punching machine - P.P.M.

(4) rolled stainless steel tube. In order to further reduce the hollow capillary to reduce the wall, the pipe must be processed into a pipe in the pipe. For the automatic rolling mill unit, rolling stainless steel pipe after the machine are also finished by the whole machine.

(5) stainless steel tube reheating and reduction. In order to finally obtain the required finished product tube, usually re-heating of the barren pipe, and then in the sizing machine, reducer, tension reducer or expansion machine on the processing, access to a variety of sizes of finished stainless steel tube.

(6) stainless steel tube finishing, inspection and packaging library.

(BCC) can be attracted to the magnet, which is made from the Austrian field temperature quenching, which the corrosion resistance is the best, but the material (1) Ma Tian scattered iron: this type of stainless steel tube for the body of the cubic structure (BCC) Hardening, followed by tempering can increase the ductility, but the corrosion resistance will be reduced, especially in the 450 degrees Celsius to 650 degrees between the tempering, will make the crystal lattice gap in the diffusion of carbon atoms and chromium formation network Like chromium carbide caused by the consumption of chromium near the region to reduce the chromium content, can not form a protective film, and the loss of corrosion resistance, it is necessary to pay special attention. The following are the heat treatment temperatures for various Maji San iron stainless steel pipes.

(A) 403, 410, 416se the temperature is 650-750 ℃.

(B) 414 has a temperature of 650-730 ° C.

(C) the temperature of 431 is 6. (d) 440-A, 440-B, 440-C, 420 at a temperature of 680-750C.

(2) Fat iron and iron: This kind of stainless steel body-centered cubic structure (BCC) can be used for magnet attracting is usually used in the automotive industry or chemical industry, the strength will not change due to heat treatment, but can increase the intensity of cold processing.