Intergranular corrosion resistance boiler head

Abstract

The invention discloses an intergranular corrosion resistance boiler head. The intergranular corrosion resistance boiler head comprises 0.5-1% of Ti, 8-14% of Ni, 18-27% of Cr, 0.01-0.03 % of P, 0.01-0.02 % of S, 2-8% of Mn, 0.5-1% of Si, 0.05-0.1% of C and the balance Fe. The head made of the materials is good in surface quality and anti-wrinkling performance, the intergranular corrosion resistance capacity of the head is improved, hot crack occurrence is prevented effectively, the equipment service life is prolonged, and the cost is saved.

Description

[0001] technical field [0002] The invention belongs to a boiler head, in particular to a boiler head resistant to intergranular corrosion. [0003] Background technique [0004] As an indispensable part of normal pressure and pressure vessels, the head is widely used in pharmaceutical, food, chemical, biological, water treatment, environmental protection, electric power, boiler pressure vessels and other fields. At present, longitudinal cracks are prone to appear around the straight edge section outside the heat-affected zone of the weld between the stainless steel head and the pup joint of the cylinder, and medium leakage occurs, which is caused by intergranular corrosion. [0005] Contents of the invention [0006] In order to overcome the above-mentioned defects in the prior art, the purpose of the present invention is to provide an anti-intergranular corrosion boiler head, which can reduce intergranular corrosion and improve the service life of equipment. [0007...

AI Technical Summary

Problems solved by technology

At present, longitudinal cracks are prone to appear around the straight edge section outside the heat-affected zone of the weld between the stainless steel head and the pup joint of the cylinder, and medium leakage occurs, which is caused by intergranular corrosion