Explosive welding method for zirconium-steel-zirconium three layer pipe

Abstract

The invention relates to an explosive welding method for a zirconium-steel-zirconium three layer pipe. An outer zirconium pipe in an outer zirconium pipe-steel pipe-inner zirconium pipe has the diameter of 60-505 mm and the thickness of 1-8 mm, and a steel pipe has the diameter of 55-500 mm and the thickness of 8-200 mm; the inner diameter of the steel pipe is 4-6 mm larger than the outer diameter of an inner zirconium pipe, and the inner diameter of the outer zirconium pipe is 4-6 mm larger than the outer diameter of the steel pipe; the inner diameter of the inner zirconium pipe is 10-15 mm larger than the maximal diameter of a buffer cone; the explosive welding method comprises the following steps of carrying out the surface treatment and alignment of a base pipe, treating the zirconiumpipe; guaranteeing the straightness of the zirconium pipe; assembling which comprises the steps of matching, vertically mounting the inner zirconium pipe, the outer zirconium pipe and the steel pipe on a technological bottom plate and mounting a pressure reduction cone at the center inside the inner zirconium pipe; carrying out re-explosive-cladding which comprises the steps of horizontally placing the device assembled on an explosive table, additionally mounting a pipe-shaped outer frame at the outer part of an outer steel pipe, and uniformly placing explosives around the pipe-shaped outer frame and the buffer cone of the inner pipe and denotating through detonators placed at the top of the buffer cone; and firmly binding the surfaces of the zirconium pipe and the steel pipe under high braking pressure.

Description

technical field [0001] The invention relates to a tubular metal composite material, in particular to a metal composite material produced by an explosive composite method, and belongs to the field of metal composite material manufacturing. Background technique [0002] Metal composite panels are currently widely used in petroleum, chemical, pharmaceutical, shipbuilding, electric power, metallurgy and other industries. With the continuous development of material science and equipment manufacturing technology, acetic acid, nitric acid, hydrochloric acid, urea, hydrogen peroxide, polyoxymethylene and chlorination More and more zirconium metal composite panels are used in the strong corrosion equipment of polyethylene and other production plants. This variety of composite panels has strong corrosion resistance, wear resistance and high economic efficiency. Zirconium composite plates are mainly used to manufacture some reactors in the strong corrosion equipment in the production d...

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Problems solved by technology

Zirconium composite plates are mainly used to manufacture some reactors in the strong corrosion equipment in the production plant, while some small-diameter pipes still use pure zirconium materials, and in order to ensure the strength, the wall thickness of the zirconium tubes generally selected is relatively thick (about 10-20mm ), which is less economical due to the higher price of zirconium metal

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