Laser composite manufacturing furnace winding roller high-temperature-oxidation-resistant and press-in nodulation-resistant functional layer alloy material and process method

A high-temperature oxidation-resistant, functional layer technology, applied in the coating process of metal materials, coatings, etc., can solve the problems of poor oxidation resistance and high-temperature red hardness, affecting the quality of the coiled plate surface, and coating cracks and peeling, etc., to achieve Improve high-temperature red hardness, improve high-temperature oxidation resistance, and refine the structure

Pending Publication Date: 2021-10-29
沈阳大陆激光先进制造技术创新有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

However, on the surface of the roller repaired by surfacing welding, the stress cracks are obvious, and even the cracks are closed, and peeling occurs, and the high-temperature oxidation resistance and high-temperature red hardness are poor, and a large number of oxides and pits appear on the surface of the roller. , forming nodules, affecting the quality of the coiled plate surface
The surface of the roller is repaired by spraying. Although some materials with high temperature oxidation resistance and high temperature red hardness can be sprayed, the interface bonding force is weak and the coating is thin. Under the action of high temperature and coil contact, the coating is prone to cracks and peeling off. After peeling off, scratching the coil during use will cause nodules on the roll surface and coil pits and pits

Method used

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Effect test

preparation example Construction

[0020] A method for preparing a high-temperature oxidation-resistant and anti-pressing nodulation functional layer of a furnace roll manufactured by laser composite manufacturing, comprising the following steps:

[0021] Step 1. Preset a layer of 1.2-1.5mm thick transition layer material on the surface of the furnace roll by presetting Co-Cr-W alloy powder, select fiber laser for scanning cladding, and then process to keep the transition layer thickness 1.0 -1.2mm.

[0022] Step 2. Select a fiber laser and use the method of pre-powder to laser clad the functional layer alloy powder on the transition layer. The cladding process is: power: 2000-2500W, spot: 3.0mm, focal length 280-350mm, scanning speed 1000 -1200mm / min, single layer thickness 0.6-0.8mm, lap rate 40%-60%.

[0023] Further, the composition of the Co-Cr-W alloy powder in the step 1 is: C: 1.0%~2.0%, Cr: 25.0%~30.0%, W: 1.0%~5.0%, Mo: 0.5%~1.5% %, Al: 0.1%~1.0%, Mn: 0.1%~1.0%, Si: 1.0%~1.5%, Fe: 1.0%~5.0%, Ni: 1.0...

Embodiment 1

[0026] 1. Remove the factors affecting the cladding quality such as oil stains, oxides, fatigue layers, and surface cracks on the surface of the furnace roll, and use a fiber laser to clad a layer of transition layer alloy material at the designated position, leaving a thickness of 1.0mm after processing.

[0027] 2. Use laser cladding technology and preset powder to scan and clad the functional layer on the transition layer. The alloy composition of the functional layer is calculated by mass percentage: C: 2.0%, Cr: 24.0%, Ta: 10.0%, Al: 7.5% , Y: 0.8%, Si: 0.8%, Co: balance. The cladding thickness is 0.7mm.

[0028] 3. Process the functional layer after cladding, leaving a thickness of 0.5mm.

Embodiment 2

[0030] 1. Remove the factors affecting the cladding quality such as oil stains, oxides, fatigue layers, and surface cracks on the surface of the furnace roll, and use a fiber laser to clad a layer of transition layer alloy material at the designated position, leaving a thickness of 1.0mm after processing.

[0031] 2. Use laser cladding technology and pre-set powder to scan the cladding functional layer on the transition layer. The alloy composition of the functional layer is calculated by mass percentage: C: 1.9%, Cr: 25.0%, Ta: 9.0%, Al: 8.0% , Y: 1.0%, Si: 1.0%, Co: balance. The cladding thickness is 0.8mm.

[0032] 3. Process the functional layer after cladding, leaving a thickness of 0.6mm.

[0033] After cladding the functional layer, the metallurgical bonding of the furnace roll roll surface is good, there is no crack defect on the surface, and the hardness is higher than that of the original base material. After being used on-line, after high temperature and long-term...

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Abstract

The invention belongs to the technical field of surface treatment, and particularly relates to a laser composite manufacturing furnace winding roller high-temperature-oxidation-resistant and press-in nodulation-resistant functional layer alloy material and a process method. The laser composite manufacturing furnace winding roller high-temperature-oxidation-resistant and press-in nodulation-resistant functional layer alloy material comprises the following components in percentage by mass: 1.5%-2.5% of C, 20.0%-30.0% of Cr, 5.0%-10.0% of Ta, 5.0%-10.0% of Al, 0.5%-1.0% of Y, 0.5%-1.0% of Si and the balance of Co. According to the laser composite manufacturing furnace winding roller high-temperature-oxidation-resistant and press-in nodulation-resistant functional layer alloy material, cobalt-based alloy serves as a base body, Ta is added, C is added, high-hardness carbide is formed, the high-temperature red hardness of the alloy is improved, meanwhile, Al is added, a high-temperature oxidation film is formed, then a proper amount of Si element is added to improve the oxidation resistance, the Y element can refine the structure, and the Cr element improves the high-temperature corrosion resistance of the surface of a furnace winding roller.

Description

technical field [0001] The invention belongs to the technical field of surface treatment, and relates to a laser cladding alloy functional layer material, in particular to an alloy material and a process method for a high-temperature oxidation-resistant and anti-pressing nodulation functional layer of a furnace roll manufactured by laser compounding. Background technique [0002] The furnace coil roll is a key component when rolling a coil. Due to long-term contact with the steel coil at high temperature, a large number of cracks, oxidation, nodules, pits and other defects occur on the surface of the roll, which directly affects the head and tail of the steel coil. surface quality. Therefore, the furnace coil roll has good high temperature red hardness, oxidation resistance and anti-caking property, which is of great significance to improve product quality, reduce scrap rate, and develop steel coil rolling technology. [0003] At present, the furnace rolls that need to be r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10C22C19/07B22F1/00
CPCC23C24/106C22C19/07
Inventor 王晓佳陈海涛董思远
Owner 沈阳大陆激光先进制造技术创新有限公司
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