Reasonable material size determines the role of steel in the process of pressing and deformation. Some deformation characteristics of large diameter high pressure stainless steel pipe fittings:
(1) large diameter high pressure stainless steel pipe fittings in the bending of the outer wall of the arc tube: Lane, the inner arc tube wall is compressed, its tensile and compression is not the same, generally bear the difference between three to two times. Tensile rate for 10-11%, the compression rate is 4%, such as phi 406.4 x 40 mm of steel tube tensile rate is 11%, while the compression rate was 2.5%; phi 355.6 x 36 mm pipe tensile rate is 11%, the compression ratio for 2.30% phi 323.9 x 36 mm pipe tensile rate is 10%, compression rate of 2.5%. It shows that the deformation characteristics and other stainless steel tubes are not the same in the pressing process of large diameter high pressure stainless steel pipe fittings.
(2) the large diameter and high pressure pressing stainless steel pipe fittings has a larger tensile rate than the small diameter high pressure stainless steel pipe fittings, and the compression ratio is small.
For example: Phi 406.4 x 40 mm carbon steel, alloy steel, stainless steel, pipe fittings and phi 355.6 x 36 and phi 323.9 x 36 mm of high pressure stainless steel fittings, although different diameter, different materials, but their tensile rate for 11%, the compression rate is 2.5%.
But for small diameter and thick wall pipe stainless steel high pressure pipe fittings, such as Phi 273 x 25 mm, the tensile rate of only 3.5%, compression rate is 2%, such as: Phi 406. X 40 mm stainless steel pipe fittings’ tensile rate is 11%, indeed somewhat difference, the reason is the small caliber, ‘the wall thickness is not easy to stretch.
(3) the tensile rate and compression ratio of large diameter high pressure stainless steel pipe fittings are equal to that in hot pressing.
Such as phi 406.4 x 40 mm 45 carbon steel, stainless steel pipe fittings and 12CrMoV alloy steel stainless steel pipe fittings, the tensile rate for 11%, compression rate is 2.5%, and phi 355.6 x 25 mm 45 carbon steel, stainless steel pipe fittings and phi 355.6 * of 22.2 mm in 12 Cr-l4oV synthetic steel stainless steel pipe fitting the stretching rate is very close to, 10-11%.
Tuesday, January 4, 2022
Characteristics of large diameter high pressure stainless steel pipe fittings
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