Method for preparing large titanium steel composite plates for nuclear power and thermal power

Abstract

The invention discloses a method for preparing large titanium steel composite plates for nuclear power and thermal power, which comprises the following steps: 1, preparing large cladding titanium plates or titanium alloy plates; 2, respectively performing surface polishing treatment on the cladding titanium plates or the titanium alloy plates and base steel plates; 3, assembling the cladding titanium plates or the titanium alloy plates and the base steel plates by an angle assembly method; 4, performing explosion composition on the cladding titanium plates or the titanium alloy plates and the base steel plates to manufacture preliminary products of large titanium steel composite plates; 5, performing annealing treatment; 6, performing flattening treatment; and 7, performing subsequent treatment, namely performing ultrasonic flaw detection, flamecutting of plate edges, machining of four sides, surface polishing treatment and conventional performance examination on the flattened preliminary products of large titanium steel composite plates. The method has simple operation, convenient implementation and low cost; and the produced large titanium steel composite plates have good quality, and can meet the manufacturing requirement of multiple kinds of large industrial equipment and components on the titanium steel composite plates.

Description

technical field [0001] The invention belongs to the technical field of manufacturing titanium / steel composite plates, and in particular relates to a method for preparing large-scale titanium / steel composite plates for nuclear power and thermal power. Background technique [0002] Titanium has the characteristics of light weight, high specific strength, and corrosion resistance, while titanium / steel composite plates take into account the corrosion resistance of titanium and the high strength of steel plates, and the price is relatively low. It can be widely used in petrochemical, electric power, and wet processes. Metallurgy, caustic soda and other industrial equipment and container manufacturing. [0003] With the continuous development of my country's economy, all kinds of equipment and containers are becoming larger and larger, which is reflected in the increasing length, diameter and area of ​​equipment or components. Therefore, the specifications and performance of the r...

AI Technical Summary

Problems solved by technology

For example, the specifications of titanium steel composite tube sheets for nuclear power 1 million kilowatt condenser units are: 5 / 20~60mm×4500mm×5600mm, which are made of titanium / steel composite plates with a length of less than 5600mm and a width of less than 4500mm, which will not only produce multiple channels Welding seams will increase manufacturing costs and equipment safety hazards, and will force companies to import from abroad, increasing foreign exchange investment, which is not conducive to the development planning of related domestic industries and the improvement of explosive welding technology

[0004] The conventional production method of titanium / steel clad plates adopts explosive welding technology. Due to the limited size of titanium plates provided by the market, they need to be spliced. During explosive lamination, defects such as multilayer weld cracking, local non-bonding, and interface melting will occur. At the same time, these defects It is impossible to repair the welding with ordinary welding methods, which directly leads to the scrapping of the entire composite panel due to partial unbonding, especially not conducive to the manufacture of large-scale titanium / steel composite panels

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