Large cladding nickel base surfacing process of barrel

Abstract

The invention discloses a large cladding nickel base surfacing process of a barrel. The large cladding nickel base surfacing process of the barrel specifically comprises the following steps that S1, outer tool tension bands are welded to the two ends of the barrel; S2, the inner surface of the barrel is cleaned; S3, a welding strip / welding agent combination of the EQNiCrMo-3 / NSAS3-50BS type is adopted for carrying out transition layer strip pole surfacing on the barrel; S4, the transition layer is subjected to heat treatment; S5, a welding strip / welding agent combination of the EQNiCrMo-4 / ES A-FB 2B type is adopted for carrying out corrosion-resisting layer strip pole surfacing on the barrel; and S6, 100% of permeation surface detection and 100% of ultrasonic qualification detection are carried out on the wear-resisting layer. Through the large cladding nickel base surfacing process of the barrel, welding deformation of container barrel surfacing can be effectively controlled, the quality of a bonding face between the basic layer and the surfacing layer of the barrel can be guaranteed, the requirements of mechanical property, chemical property and corrosion property detection can be met, and the requirements of product manufacturing and national standards can be met.

Description

technical field [0001] The invention relates to the field of large cladding surfacing welding technology, in particular to a cylinder large cladding nickel-based surfacing welding technology. Background technique [0002] With the rapid development of my country's petrochemical engineering industry, there are more and more container equipment serving under high pressure, high temperature, and corrosion conditions, which requires many container equipment to have technical performance indicators such as high temperature resistance, corrosion resistance, and high pressure resistance. In order to reduce the manufacturing cost of the container, it is usually designed to use high-strength low-alloy steel or heat-resistant low-alloy steel as the base layer to ensure the compressive strength of the container, and stainless steel, nickel, copper, titanium, zirconium and other non-ferrous metals are used as cladding. Guarantee the corrosion resistance and certain strength of the conta...

AI Technical Summary

Problems solved by technology

The surfacing welding process of electrode arc welding has low welding efficiency, high labor intensity of welders, poor welding quality consistency, and large welding fume damages the health of welders; the surfacing welding process of manual tungsten argon arc welding also has low welding efficiency and high labor intensity , The problem of poor welding quality consistency; although the surfacing welding process of automatic argon tungsten arc welding can guarantee the welding quality consistency and reduce the labor intensity of welders, there is still the problem of low cladding efficiency; the welding wire submerged arc welding surfacing The welding process can solve the above problems to a certain extent, but the surfacing dilution rate of wire submerged arc welding is too large, and the quality and composition requirements of the joint surface are difficult to guarantee; so the currently developed strip submerged arc surfacing or strip electroslag Overlay welding solves many of the above problems very well, but for large cladding nickel-based overlay welding, due to the large overlay welding area and thick overlay welding layer, it is necessary to control the welding deformation of the overlay welding cylinder and ensure the overlay welding quality. , Improve welding efficiency, reduce labor intensity of welders

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