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A method for removing nodules on the hearth roll of a heat treatment furnace on-line

A technology for heat treatment furnaces and hearth rollers, applied to furnaces, descaling devices, furnace components, etc., can solve problems such as time-consuming and complicated operations, and achieve the effects of simple operation, improved steel plate quality, and improved appearance pass rate

Active Publication Date: 2016-09-28
贝斯山钢(山东)钢板有限公司
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Problems solved by technology

Although this method can remove nodules to a certain extent, the operation is complicated and requires the use of winches, chains and other equipment, which takes a long time

Method used

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  • A method for removing nodules on the hearth roll of a heat treatment furnace on-line

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0028] A method for removing nodules on the hearth roll of a heat treatment furnace on-line, comprising the following steps:

[0029] (1) Making the steel plate for furnace bottom rollers: As shown in Figure 1, select a high-strength steel plate with a specification of 70mm*3100mm*9000mm, and cut out 3 rows of fish bones with CNC flame cutting equipment along the length of the steel plate Shaped gap, the gap is specifically a rectangular gap symmetrically arranged, spare;

[0030] (2) At the end of the production of tempered steel plates, empty the steel plates in the furnace, control the furnace temperature between 550°C and 650°C, place the steel plates prepared in advance on the feeding roller table in front of the furnace, and use the centering device Center the steel plate;

[0031] (3) Open the front and rear furnace doors, set the stee...

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Abstract

The invention discloses a device and a method for online removing accretions on a furnace bottom roller of a heat treatment furnace. The device comprises a steel plate placed on the furnace bottom roller, wherein the steel plate is a high-strength steel plate of 70mm*3,100mm*9,000mm; a herringbone opening is formed by using numerical control flame cutting equipment to cut along the length direction of the steel plate. According to the device and the method disclosed by the invention, under the state that the shut-down is not needed, tempering and normalizing temperature states of the heat treatment furnace are effectively utilized, and the treatment time is selected in the switching process of a tempering technology and a normalizing technology, so that the influence on the production efficiency caused by the treatment on the accretions of the furnace bottom roller can be effectively reduced; indentations on the lower surface of the steel plate subjected to heat treatment due to the accretions of the furnace bottom roller can be effectively removed, and further the appearance qualified rate of steel plate products subjected to heat treatment is greatly improved; compared with a traditional method, the method disclosed by the invention has the advantages of simpleness and convenience in operation, low cost and less influence on the production efficiency; a large amount of labor and material resources are reduced; meanwhile, the quality of the steel plate is effectively improved.

Description

technical field [0001] The invention relates to the technical field of thick plate heat treatment furnace through-furnace, in particular to a method for removing nodules on the bottom roll of a heat treatment furnace online. Background technique [0002] At present, domestic large-scale iron and steel enterprises mainly use a nitrogen-protected non-oxidation roller hearth heat treatment furnace for heat treatment of steel plates. This heat treatment furnace has the advantages of high production efficiency and low energy consumption. The flame burns inside the radiant tube to generate heat. Thermal radiation heats the steel plate in the furnace, and because the furnace is continuously filled with nitrogen, it can ensure that the steel plate treated by shot blasting descaled does not produce secondary scale during heat treatment, effectively ensuring the surface quality of the steel plate. [0003] However, in actual production, it is found that after a period of use, the hear...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F27D25/00
Inventor 彭宾李永亮丛亮薄其伟李梁王旭峰王京先崔立镇
Owner 贝斯山钢(山东)钢板有限公司
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