Stainless steel seamless pipe production characteristics have?
(2) deformation resistance.
(3) wide exhibition. Stainless steel wide exhibition (horizontal deformation) larger stainless steel widened to carbon steel 1.3 times; stainless steel 1.35 to 1.5 times, ferritic stainless steel 1.55 to 1.6 times. Therefore, cross-hole rolling should pay attention to control the transverse deformation, should take a smaller ovality.
(4) Sensitivity to stress.
(5) thermal conductivity. Stainless steel's low temperature thermal conductivity is poor, while the linear expansion coefficient is larger than carbon steel.
(6) Antioxidant. Since stainless steel is resistant to oxidation, it is less heat-generated on the resulting scale. However, the scale contains chromium oxide, nickel oxide and very dense, pickling more difficult cold processing. Commonly used HF + HNO3 pickling or alkaline acid complex pickling.
(7) bonding tendency. Ferritic stainless steel roll easy to roll, so that the surface quality of steel pipe decreases. Hot-rolled finished mills (such as the sizing machine) with cast iron roller can reduce stick phenomenon. It is also important to cool the roll with cooling water reasonably. glenflange