Method for repairing partial layering of titanium-steel explosion cladding plate

Abstract

The invention discloses a method for repairing partial layering of a titanium-steel explosion cladding plate. The method comprises the following steps that (1) ultrasonic detection is carried out on alayering area for confirming the size of the layering area, and then a titanium layer in the layering area is removed; (2) then the titanium layer in the layering area is pried up so that the titanium layer is separated from a steel plate; (3) the layering area is polished for removing lines on a combining surface, an original cladding plate titanium layer surrounding the layering area is polished and the gradient is formed; (4) a corresponding titanium plate for repair is selected, a gap is formed between the titanium plate and the titanium layer of the titanium-steel explosion cladding plate through supporting blocks, an explosive is laid and a detonator is arranged on the titanium plate for repair, separated by a protective layer, and then explosion cladding is carried out; (5) after the explosion cladding, an edge titanium layer in an overlapped area is removed, and is ground to be parallel and level to a base metal; and (6) corresponding nondestructive testing is carried out finally.

Description

technical field [0001] The invention relates to a method for repairing partial delamination of a titanium-steel explosive composite plate. Background technique [0002] The appearance of titanium is very similar to steel, with a density of 4.51 g / cm3, which is less than 60% of steel, and is the metal element with the lowest density among refractory metals. Titanium is very stable in air at room temperature. When heated to 400-550°C, a firm oxide film will be formed on the surface to protect against further oxidation. Titanium has a strong ability to absorb oxygen, nitrogen, and hydrogen. Such gases are very harmful impurities to metal titanium, and even a small amount (0.01% to 0.005%) can seriously affect its mechanical properties. The mechanical properties of titanium, commonly known as mechanical properties, are closely related to purity. High-purity titanium has excellent machinability, good elongation and reduction of area, but low strength and is not suitable for st...

AI Technical Summary

Problems solved by technology

Although the composite panels produced by the explosive composite method have high bonding strength, as the size of the explosive composite panels increases and the output increases, the number of unqualified products reflected in the defective rate of the products also increases. Appear

Since titanium and its alloys are insoluble metals, they cannot be directly welded with steel

Partial delamination of the titanium-steel composite plate or delamination beyond the standard will cause the plate to be scrapped

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