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A pretreatment method for circular continuous casting slabs suitable for walking heating furnaces

A technology of walking heating furnace and continuous casting slab, applied in heat treatment furnaces, heat treatment equipment, furnaces, etc., can solve problems such as hidden dangers, safety of circular continuous casting slabs, and inability to exert the production capacity of heating furnaces.

Active Publication Date: 2022-04-08
DAYE SPECIAL STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a pretreatment method for circular continuous casting slabs suitable for walking heating furnaces, so as to solve the potential safety hazards in the production of circular continuous casting slabs in existing walking heating furnaces and the failure of heating furnaces. The problem of production capacity, so that the circular continuous casting slab can be steadily advanced in the existing walking furnace

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  • A pretreatment method for circular continuous casting slabs suitable for walking heating furnaces
  • A pretreatment method for circular continuous casting slabs suitable for walking heating furnaces

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Experimental program
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Effect test

Embodiment 1

[0056] In this embodiment, the diameter of the circular continuous casting slab is 460 mm, and the circular continuous casting slab is flattened by a tension leveler. The maximum reduction of the flattening can be calculated according to the stability of the equilateral triangle to be 60 mm. Then, according to the diameter of the circular continuous casting slab and the minimum width of the flattened part, the minimum reduction is determined to be 20 mm.

[0057] During the flattening operation, ensure that the pulling speed of the tension leveler is constant, set at 0.46m / min, after flattening, the width of the flattened part is 130mm.

[0058] Put the flattened continuous casting slab into the walking heating furnace, so that the flattening part is in contact with the roller table of the heating furnace. The test shows that the flattened continuous casting slab can advance steadily in the walking heating furnace , to meet production demand.

Embodiment 2

[0066] In this embodiment, the diameter of the circular continuous casting slab is 480 mm, and the circular continuous casting slab is flattened by a tension leveler. The maximum reduction of the flattening reduction can be calculated according to the stability of the equilateral triangle to be 65 mm. Then, according to the diameter of the circular continuous casting slab and the minimum width of the flattened part, the minimum reduction is determined to be 18 mm.

[0067] During the flattening operation, ensure that the pulling speed of the tension leveler is constant, set to 0.46m / min, after flattening, the width of the flattened part is 135mm.

[0068] Put the flattened continuous casting slab into the walking heating furnace, so that the flattening part is in contact with the roller table of the heating furnace. The test shows that the flattened continuous casting slab can advance steadily in the walking heating furnace , to meet production demand.

Embodiment 3

[0070] In this embodiment, the diameter of the circular continuous casting slab is 500 mm, and the circular continuous casting slab is flattened by a tension leveler. The maximum reduction of the flattening can be calculated according to the stability of the equilateral triangle to be 68 mm. Afterwards, the minimum reduction is determined to be 18mm according to the diameter of the circular continuous casting slab and the minimum width of the flattened part.

[0071] During the flattening operation, ensure that the pulling speed of the tension leveler is constant, set to 0.46m / min, after flattening, the width of the flattened part is 140mm.

[0072] Put the flattened continuous casting slab into the walking heating furnace, so that the flattening part is in contact with the roller table of the heating furnace. The test shows that the flattened continuous casting slab can move forward steadily in the walking heating furnace , to meet production demand.

[0073] In summary: the...

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Abstract

The invention provides a pretreatment method for circular continuous casting slabs suitable for walking heating furnaces. The pretreatment method includes the following steps: step S1, determining the size of the circular continuous casting slabs according to the size of the circular continuous casting slabs Flattening parameters; step S2, performing a flattening operation on the circular continuous casting slab according to the flattening parameters, and the flattened continuous casting slab includes two opposite flattened parts, and the width of the flattened parts is not less than 130mm. The pretreatment method of the circular continuous casting slab of the present invention can realize the steady progress of the circular continuous casting slab in the existing walking heating furnace.

Description

technical field [0001] The invention belongs to the technical field of continuous casting slab production, and in particular relates to a pretreatment method for circular continuous casting slabs suitable for a walking heating furnace. Background technique [0002] At present, walking-type heating furnaces are generally used to produce square continuous casting slabs. If they are used to produce round continuous casting slabs, the existing walking-type heating furnaces mainly have the following problems: (1) The distance between the heat-resistant blocks in the heating furnace is relatively small. Small, round continuous casting slabs are easy to roll in the furnace, posing safety hazards; (2) The supporting facilities of the heating furnace do not meet the conditions for feeding circular continuous casting slabs: a. The feeding platform is flat, non-serrated, round The shape continuous casting billet is easy to roll; b. There is no card slot on the outside of the steel mach...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D31/00C21D9/70
CPCB21D31/00C21D9/70
Inventor 吴剑王凌云高坤潘明旭饶金元邓小利周杰余攀卢荣凤
Owner DAYE SPECIAL STEEL CO LTD