Preparation method of large-area all-joint-rate zirconium/titanium/steel explosive clad plate

Abstract

The invention discloses a preparation method of a large-area all-joint-rate zirconium/titanium/steel explosive clad plate. A current general explosive clad process with titanium metal as a transitionlayer is adopted, a detonating point position is selected before explosive cladding, one titanium layer with the diameter being 280-320 mm and the thickness being 2 mm is subjected to explosive cladding on a base board to serve as the transition layer, then the transition layer serves as a detonating point, large-area zirconium and titanium one-time continuous welding is conducted, the plate is made to fit in all area, the smallest shearing strength tau b is greater than or equal to 137.9 Mpa, and the large-area all-joint explosive cladding welding is achieved accordingly. The method can produce the large-area zirconium and steel clad plate with the area being 6-15 m<2> and the joint rate being 100%, domestication of the large-area zirconium and steel clad plate is achieved, and the requirement of chemical industry development in China is met.

Description

technical field [0001] The invention relates to a method for preparing a zirconium / titanium / steel explosive composite plate with a large area and full bonding rate. Background technique [0002] Zirconium is a rare metal and expensive, but it has comprehensive properties such as high temperature strength, good corrosion resistance, good processability and low thermal neutron absorption cross section. It is an important structural material for nuclear reactors and has been widely used in the nuclear industry. Because it is very active, it can easily undergo oxidation reaction in air or aqueous solution at room temperature, forming a dense oxide film, which makes zirconium have excellent resistance to acid and alkali corrosion, so it has been widely used in the chemical industry recently. Gradually increase. However, due to the limitations of materials and prices in China, there are still few applications. Therefore, under the premise of ensuring that the service life and per...

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Problems solved by technology

[0003] The research and development of domestic zirconium-steel composite plates is limited by the clad zirconium material (due to the limitation of domestic zirconium sponge and smelting technology, it is still impossible to produce zirconium plates that can meet the explosion requirements), until the beginning of this century. Imported R60702 zirconium plate for research and development of zirconium-steel composite plate. After a large number of tests, it was found that the oxygen content of the R60702 material was too high, greater than 0.1%, and the typical data was about 0.15%, resulting in high tensile strength and low elongation of the material. The area of ​​a single zirconium plate is greater than 0.5m 2 When it is impossible to achieve direct compounding with steel

At present, most of the zirconium steel composite panels used in domestic pressure vessels are imported from abroad, which is not only expensive, but also has a long delivery cycle, which is not conducive to the popularization and application of domestic zirconium steel composite panel equipment, and is not conducive to the development of national industries.

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