Thin-sized hot-continuous-rolled steel for furniture and method for producing same

A production method and hot continuous rolling technology are applied in the field of steel material production, which can solve the problems of inability to achieve stable production and low rolling temperature, and achieve the effects of high strength and toughness matching, enhanced safety, good elongation and cold bending performance.

Active Publication Date: 2013-03-20
SHOUGANG CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a thin-gauge hot-rolled furniture steel, which solves the problem that the existing thin-gauge hot-rolled furniture steel and its production method cannot achieve stable production because the rolling temperature is too low

Method used

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  • Thin-sized hot-continuous-rolled steel for furniture and method for producing same
  • Thin-sized hot-continuous-rolled steel for furniture and method for producing same

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Embodiment 1

[0042] Table 1 shows the composition system of the thin-gauge hot-rolled furniture steel provided in Embodiment 1 of the present invention.

[0043] Table 1

[0044] C

Embodiment 2

[0046] The production method of the thin-gauge hot-rolled furniture steel provided in Embodiment 2 of the present invention is to produce 2-4mm thin-gauge 800MPa grade furniture steel according to the chemical composition of Embodiment 1, and the production process route adopts 220 tons of converter smelting-LF refining ——RH vacuum treatment - continuous casting - furnace reheating - rough rolling - 7-stand finish rolling - laminar cooling - coiling.

[0047] The molten steel smelted in a 220-ton converter and refined outside the furnace is continuously cast into billets, and rolled in the 1580 hot continuous rolling production line. The reheating temperature is controlled at 1280-1300°C, and the finishing temperature of rough rolling is controlled at 1080°C-1100°C. , Use edge induction heater between rough rolling and finishing rolling process, its heating temperature is 1100-1150℃, control finish rolling and finish rolling temperature at 880℃~900℃, after rolling, it will be c...

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Abstract

The invention discloses a thin-sized hot-continuous-rolled steel for furniture and a method for producing the same. The steel comprises the following chemical components by weight percent: 0.05-0.07% of C, 0.20-0.30% of Si, 1.8-2.0% of Mn, 0.070-0.090% of Nb, 0.0010-0.0020% of B, 0.14-0.20% of Ti, 0.50-0.60% of Cr, 0.01-0.06% of Al, no more than 0.02% of P, no more than 0.010% of S, no more than 0.008% of N and the balance of Fe and inevitable impurities. According to the thin-sized hot-continuous-rolled steel for furniture and the method for producing the same, elements of Cr and Ti are added for compounding, and thermo mechanical control process (TMCP) technological parameters are controlled, thus, a superfine lath bainite structure with excellent comprehensive performance is obtained, the yield strength of the material is enabled not to be less than 800 mega pascals, and moreover, the steel has good ductility and toughness.

Description

technical field [0001] The invention relates to the technical field of production of iron and steel materials, in particular to the production of steel coils for furniture with a thin gauge yield strength of 800 MPa by using a hot continuous rolling mill and a production method thereof. Background technique [0002] The main uses of steel for furniture are the connectors of combined sofas, the brackets of bed structures, etc. There are few reports on furniture steel in existing patents and documents. Through domestic and foreign market research, it is found that: at present, furniture steel mainly adopts Q345 grade hot-rolled coils and some quenched and tempered steels, such as 45# steel quenched and tempered. Connectors in high-strength thin-gauge furniture steel. [0003] For the production of steel raw materials for furniture, the deficiencies of the existing technology are manifested in two aspects: first, common boards are commonly used, and due to the low strength lev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/38C21D8/02
Inventor 潘辉周娜李飞郭佳王全礼包春林朱国森赵林孙常库武军宽
Owner SHOUGANG CORPORATION
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