Shanghai Liangshi IntelRobot Technology Corporation

With the continuous construction of supercritical power plants and related industries, for mutual heat, steam tubes at high temperature oxidation resistance of stainless steel pipe wall is ever increasing, so the stainless steel tube manufacturing process equipment requirements become more advanced.As the boiler in thermal power, superheater and reheater used SUS321HTB 18-8 stainless steel pipe, etc., due to the long delivery high temperatures (above 540 ℃) high pressure (greater than 25MPa) water vapor, the inner surface is easier to generate iron oxide and easier to peel off, causing tube blockage and damage to equipment.By international experts years of research showed that the stainless steel tube wall can improve its resistance to oxidation by shot peening,experiments show: stainless steel pipe inner wall surface changed the micro-structure after shot peening, in the course of various elements (especially is Cr) rich layer was changed greatly and improves the oxidation resistance, so that the thickness of the oxide layer is generated without shot peening 0.07% to 1.7%,and the oxide layer without peeling, visible spray pills strengthened of good effect.So currently this special stainless steel tube manufacturers require the use of such small diameter stainless steel inner wall of shot-peening equipment, to improve antioxidant capacity stainless steel inner wall, and achieve the effect of pipe wall hardening.

Supercritical power plant dedicated small diameter stainless steel tube wall peening equipment

Shanghai Liangshi combination of foreign-related peening technology, the pipe wall peening equipment has been more than two years of research and development, manufacturing of small-caliber (DN22㎜ ~ 40 mm) stainless steel wall shot peening equipment.