Tooling for efficiently manufacturing wide thick plate blank for wide thick plate rolling machine and manufacture method thereof

A technology for plate rolling mills and thick slabs, which is applied in the field of high-efficiency manufacturing tooling for wide and thick slabs for wide and heavy plate rolling mills, can solve the problems of low production efficiency and unstable quality of slabs, shorten the production cycle, improve the quality of slabs, Reduce the effect of secondary oxidation inclusions and gas entrainment

Active Publication Date: 2013-01-23
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-efficiency preparation tooling and preparation method for wide and thick slabs for wide and thick plate rolling mills, so as to solve the problems of low production efficiency and unstable quality of slabs

Method used

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  • Tooling for efficiently manufacturing wide thick plate blank for wide thick plate rolling machine and manufacture method thereof
  • Tooling for efficiently manufacturing wide thick plate blank for wide thick plate rolling machine and manufacture method thereof
  • Tooling for efficiently manufacturing wide thick plate blank for wide thick plate rolling machine and manufacture method thereof

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Effect test

Embodiment 1

[0071] Present embodiment adopts the slab weight that the present invention produces is 40t, and concrete process parameter is as follows:

[0072] sprue diameter Lower mouth diameter The thickness of the middle injection pipe brick is 35mm; the inner diameter of the runner Three ingates are used, and the diameters of the ingates are 30mm, 40mm and 50mm as the distance from the center injection pipe decreases. The taper of the ingot mold is 2%, and the thickness of the ingot mold is 300mm. Double-layer thermal insulation riser is adopted, the height of the riser is 300mm, and the taper of the riser is 2%. is 300°C.

[0073] The preheating temperature of the ingot mold is 80°C, and the interior is sprayed with 1mm thick zircon powder coating. The chassis is placed on the automatic transport trolley, then the pouring system, ingot mold and riser are assembled, and then the molten metal is poured. The material of the poured molten metal is 16Mn, the pouring superheat is ...

Embodiment 2

[0077] In this embodiment, the weight of the slab produced by the present invention is 60t, and the size of the slab is 1000×2700×3300mm. The specific process parameters are as follows:

[0078] sprue diameter Lower mouth diameter The thickness of the middle injection pipe brick is 50mm; the inner diameter of the runner Four ingates are used, and the diameters of the ingates are 30mm, 45mm, 60mm and 75mm as the distance from the center injection pipe decreases. The taper of the ingot mold is 4%, and the thickness of the ingot mold is 350mm. Double-layer thermal insulation riser is adopted, the height of the riser is 500mm, and the taper of the riser is 4%. is 300°C.

[0079] The preheating temperature of the ingot mold is 100°C, and the interior is sprayed with 2mm thick zircon powder coating. The chassis is placed on the automatic transport trolley, then the pouring system, ingot mold and riser are assembled, and then the molten metal is poured. The material of the ...

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Abstract

The invention relates to the field of the manufacture of a wide thick plate blank for a wide thick plate rolling machine, in particular to a tooling for efficiently manufacturing the wide thick plate blank for the wide thick plate rolling machine and an efficient manufacture method of the wide thick plate blank, aiming at the problems such as cavity shrinking, loosing and cracking and the like of the plate blank and the low manufacture efficiency. The manufacture tooling is provided with a pouring system, an ingot mould, an insulated feeder, a pouring trolley, an automatic control pouring transit line, a heat preservation cover and a burial pit. Before pouring, the ingot mould, the pouring system and a chassis are assembled on the pouring trolley, and the insulated feeder is preheated. The pouring is carried out slowly; after pouring, high-temperature demolding is carried out, and the temperature of a steel ingot is kept by the heat preservation cover; and then the steel ingot is carried away by the trolley, and is hoisted into the burial pit to be slowly cooled. Finally, a flash groove is cut out of the wide thick plate, so that the flashes and strains can be removed, and the wide thick plate is put into a thermal treatment furnace to be annealed. The tooling and the method are applicable to the production of the thick plate blanks with thickness of 350-1200mm and weight of 20-70 tons.

Description

technical field [0001] The invention relates to the field of manufacturing wide and thick slabs for wide and thick plate rolling mills, in particular to a high-efficiency manufacturing tool and method for wide and thick slabs for wide and thick plate rolling mills. Background technique [0002] Wide and heavy plate rolling mills represent a country’s level of steel development. The United States had wide and heavy plate rolling mills in the 1940s. Japan’s wide and heavy plate rolling mills have a maximum opening of 1500mm and can roll thick plates over 500mm. In recent years, my country has also started to build wide and heavy plate rolling production lines, especially in the 21st century, my country has put into operation a number of 5000mm\5500mm wide and heavy plate rolling production lines, including Baosteel, Anshan Iron and Steel, Wuyang Steel Works and other enterprises have built wide and heavy plate rolling production lines. With the development of the national econ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D7/00
Inventor 夏立军栾义坤傅排先刘宏伟王雪东李殿中李依依
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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