Big-thickness slab manufacturing technique

Abstract

The invention discloses a big-thickness slab manufacturing technique belonging to the technical field of ferrous metallurgy. According to the technique, more than two continuous casting slab blanks are overlapped, and then the four sides of the blanks are combined and welded by using a combined welding technique of gas shielded welding, submerged-arc welding and electron-bombardment welding so as to form one big-thickness slab. The invention breaks through the limit of complex manufacturing process, no guarantee in inner quality or low production efficiency in the traditional big-thickness slab manufacturing technique and provides a method for producing a big-thickness slab with high quality and high efficiency by using the traditional continuous cast slab blanks, and the method is simple in operation, small in investment, high in production efficiency, flexible in organization form, capable of well satisfying the requirement of a raw material used for producing the big-thickness slab with high piece weight and high compression ratio and realizing mass industrial production, and especially suitable for the production of the big-thickness slab with the thickness of more than 600mm, and is widely applied to the manufacturing of high-quality super-thick steel plates used for various important technique equipment.

Description

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AI Technical Summary

Benefits of technology

The present inventors describe an improvement technique called Gas Welding: By utilizing multiple different techniques such as gas shield weldings, submersible arc wires, and laser scanning, they aim towards producing ultra thin slabs while maintaining good quality standards. They also consider optimizing the winding sequences and methods based upon factors like energy input rate, coolant flow rates, and pressure levels. Overall, their innovations help achieve higher productivity and lower production costs through optimized weld procedures.

Problems solved by technology

Technological Problem: Current Gas Shielded Arc Fusion Wide Castings (SCFW), particularly those made from materials like titanium alloys, require expensive facilities and involve challenging procedures involving assembly processes requiring skilled workers. Additionally, these techniques result in poor productivity rates and increased operating expenses compared to other technologies.

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