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Rolling method for obtaining multiple hot-rolled sheets at one time

A hot-rolled sheet and substrate technology, applied in metal rolling, metal rolling, manufacturing tools, etc., can solve the problems of long procurement cycle, complex process flow and high failure rate of high-grade alloy sheets, and achieve high yield and surface quality. Improves the effect of eliminating pickling procedures and short processing cycles

Active Publication Date: 2021-04-27
太原钢铁(集团)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially for super-long (greater than 12000mm) and super-wide (greater than 1800mm) hot-rolled plates, one billet can only produce a single plate, and the process is complicated, the rolling process is easy to crack, the material yield is low, and the failure rate high
Therefore, in the international market, the procurement cycle of high-grade alloy plates is long and the price is high

Method used

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  • Rolling method for obtaining multiple hot-rolled sheets at one time
  • Rolling method for obtaining multiple hot-rolled sheets at one time

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037]The specifications of the finished hot-rolled plate are required to be 3 mm in thickness x 1950 mm in width x 12000 mm in length, and the number obtained in one rolling is 12 sheets. In order to meet the above production requirements, first prepare 12 pieces of nickel-iron-chromium alloy plates of the grade N08825 whose surface has been pickled or ground for use as intermediate plates. The specifications are thickness 18mm×width 2000mm×length 2100mm; Pickled or ground ordinary carbon steel plates of grade X70MS are used as the upper and lower base plates respectively, and the specifications are thickness 18mm×width 2100mm×length 2200mm; Spray release agent between the intermediate boards and between each intermediate board, spray release agent on the uppermost intermediate board and place the upper substrate on it; prepare four side strips, namely a pair of first side strips and a pair of second side strips Two side strips, the first side strip and the second side strip ...

Embodiment 2

[0040] The specifications of the finished hot-rolled plate are required to be 3mm in thickness x 2100mm in width x 13000mm in length, and the number obtained in one rolling is 12 sheets. In order to meet the above production requirements, first prepare 12 pieces of N06600 nickel-iron-chromium alloy plates whose surfaces have been pickled or ground for use as intermediate plates, and the specifications are thickness 18mm×width 2150mm×length 2230mm; Pickled or ground plain carbon steel plates of grade X70MS are used as the upper and lower base plates respectively, and the specifications are thickness 18mm×width 2250mm×length 2330mm; Spray release agent between the intermediate boards and between each intermediate board, spray release agent on the uppermost intermediate board and place the upper substrate on it; prepare four side strips, namely a pair of first side strips and a pair of second side strips Two side strips, the first side strip and the second side strip are placed b...

Embodiment 3

[0043] The specifications of the finished hot-rolled plate are required to be 4mm in thickness x 2000mm in width x 14000mm in length, and the number obtained in one rolling is 8 sheets. In order to meet the above production requirements, first prepare 8 sheets of 904L super austenitic stainless steel plates whose surfaces have been pickled or ground for use as intermediate plates, with specifications of thickness 24mm×width 2000mm×length 2430mm; The X70 plain carbon steel plates that have been pickled or ground are used as the upper base plate and the lower base plate respectively, and the specifications are thickness 24mm × width 2100mm × length 2530mm; Spray release agent between the intermediate boards and between the intermediate boards, spray release agent on the uppermost intermediate board and place the upper substrate on it; prepare four side strips, namely a pair of first side strips and a pair of For the second side strip, the first side strip and the second side str...

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Abstract

The invention relates to a rolling method for obtaining multiple hot-rolled sheets at one time, comprising the steps of: preparing billets for rolling; heating the billets in a heating furnace; hot rolling the billets; The total heating time in the heating furnace satisfies the following requirements: the correction coefficient is 1400-1500. The rolling method for obtaining multiple hot-rolled sheets at one time of the present invention can obtain multiple hot-rolled sheets at one time with simple process, lower cost and shorter processing cycle, and cut to length after annealing. For the finished product, the pickling process is omitted, which greatly improves the yield and surface quality.

Description

technical field [0001] The invention generally relates to the technical field of steel rolling, in particular to a rolling method for obtaining multiple hot-rolled plates at one time. Background technique [0002] Due to their excellent corrosion resistance, oxidation resistance and good mechanical properties, stainless steel and nickel-based alloys are mainly used in aviation, aerospace, energy and petrochemical fields. Due to the high content of alloying elements, complex smelting process, high thermal deformation resistance, easy cracking in rolling, narrow processing temperature range, and sensitivity to heating atmosphere and temperature, the processing and manufacturing of alloys has always been a major issue. problem. Especially for nickel-based alloys, due to strict composition control requirements and poor high-temperature thermoplasticity, continuous casting processes cannot be used for production. Therefore, VIM+ESR (vacuum induction melting + electroslag remelti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B1/38B21B47/00B21B47/02B21B47/04
CPCB21B1/38B21B47/00B21B47/02B21B47/04B21B2001/386
Inventor 徐芳泓王岩张威曾莉许立伟
Owner 太原钢铁(集团)有限公司
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