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A kind of manufacturing method of extra thick steel plate

A manufacturing method and technology of extra-thick steel plates, which are applied in the field of metal plate manufacturing technology, can solve the problems of products that cannot meet the actual production requirements, large equipment investment, and high production costs, and achieve the goals of overcoming internal porosity and shrinkage cavities, increasing production, and shortening the cycle Effect

Active Publication Date: 2016-10-05
HEBEI IRON AND STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the composite extra-thick plate produced by this technology has superior performance, it needs equipment such as vacuum chamber, manipulator, vacuum electron beam welding device, etc. There are problems such as large equipment investment, high operation difficulty, and high production cost, and the product cannot meet the needs of actual production.

Method used

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  • A kind of manufacturing method of extra thick steel plate
  • A kind of manufacturing method of extra thick steel plate
  • A kind of manufacturing method of extra thick steel plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0040] Two Q345B continuous casting slabs with approximately the same size are selected as the base plate, and their specifications are both: 210mm×1630 mm×2570 mm (thickness×width×length).

[0041] Use a planer to remove the iron oxide scale on the surface to be compounded of the two blanks, open the ring groove, and use a grinder to grind the surface to be compounded of the base material 1 and compound material 2, and control the surface roughness to 6.3 μm; rinse and polish with clean water On the surface to be composited, remove surface impurities, and then use a mixed solution of 65% acetone and 35% ethanol to clean the surface to be composited of substrate 1 and composite material 2 once, and dry it with cool wind.

[0042] Sprinkle the magnesium powder 3 with a particle size of 1250 mesh on the surface of the base material 1 to be compounded, spread evenly with a brush, and control the thickness of the magnesium powder 3 to 1.5mm.

[0043] After the composite material...

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Abstract

A method for manufacturing an extra-thick steel plate, belonging to the technical field of sheet metal manufacturing technology, is used to manufacture extra-thick steel plates with a thickness of more than 100mm. The surface of the base material and composite material to be compounded is processed flat and smooth, and then sprinkled with magnesium powder with a particle size of 1250 mesh, stacked symmetrically, and welded to obtain a composite billet. The composite billet is heated in a furnace and rolled. In the hot rolling process In order to realize the metallurgical bonding between the base material and the composite material interface, the extra-thick steel plate with excellent performance can be obtained. The present invention improves the current technical means for producing extra-thick steel plates, greatly reduces the technical difficulty of making extra-thick steel plates, significantly reduces production costs, can greatly increase the output of extra-thick steel plates, and has the advantages of simple process, High efficiency, less investment, low cost, good internal product quality and so on.

Description

technical field [0001] The invention relates to a method for manufacturing an extra-thick steel plate, which belongs to the technical field of metal plate manufacturing technology. Background technique [0002] Extra-thick steel plates usually refer to steel plates with a thickness of more than 100 mm, which are mainly used in some large-scale projects or equipment, such as power stations, water conservancy, chemical industry, warships, storage tanks, reservoir gates and other fields, especially some high-performance extra-thick steel plates, It has high added value, but due to the limitation of the production method of extra-thick steel plate, the production of extra-thick steel plate cannot meet the market demand. At present, there are continuous casting method, ingot casting method, die-casting slab method, etc. to manufacture extra-thick steel plate. When continuous casting method is used to directly roll extra-thick steel plate, it is limited by the center segregation o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C37/02
CPCB21C37/02
Inventor 陈振业李建新刘丹宋庆吉刘宏强
Owner HEBEI IRON AND STEEL
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