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Powder material for laser manufacturing of composite lining plate for rolling mill house and mill roll bearing block and manufacturing method of lining plate

A rolling mill archway and roll bearing technology, applied in metal material coating process, coating, etc., can solve the problems of difficult cladding process control and easy cracks, so as to improve production efficiency, reduce use accuracy, and improve hardness Effect

Active Publication Date: 2019-06-11
沈阳大陆激光工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high content of WC in this patent is prone to crack defects during the cladding process, and it is difficult to control the cladding process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A 3000W semiconductor fiber output laser is used to select appropriate laser cladding parameters to produce a finishing mill arch liner for a steel mill, and the base material is 35CrMo.

[0024] (1) Design the tooling according to the size of the required liner, and process the thickness of the base material of the liner to be clad to be 5mm larger than the actual thickness of the drawing.

[0025] (2) Fix the processed liner on the tooling with bolts, and put the two into the heating furnace to heat to 300°C at the same time.

[0026] (3) After heating to the required temperature, use the semiconductor fiber output laser to carry out laser cladding while spreading powder. The composition of the alloy material is: C: 0.1%, Cr: 15%, Si: 0.2%, Mo: 0.5%, Ni: 2%, B: 0.2%, Mn: 0.2%, MnN: 0.02%, Y: 0.1 %, Fe: margin; cladding process: power: 2000W, spot diameter: 4mm, focal length 300mm, scanning speed: 2000mm / min, single-layer cladding thickness: 1.5mm, lap rate: 60%.

[...

Embodiment 2

[0030] A 3000W semiconductor fiber output laser is used to select appropriate laser cladding parameters to produce roll bearing seat liners for a steel plant, and the base material is 35CrMo.

[0031] (1) Design the tooling according to the size of the required liner, and process the thickness of the base material of the liner to be clad to be 5mm larger than the actual thickness of the drawing.

[0032] (2) Fix the processed liner on the tooling with bolts, and put the two into the heating furnace to heat to 300°C at the same time.

[0033] (3) After heating to the required temperature, use the semiconductor fiber output laser to carry out laser cladding while spreading powder. The composition of the alloy material is: C: 0.2%, Cr: 23%, Si: 0.7%, Mo: 2%, Ni: 3%, B: 0.7%, Mn: 1.0%, MnN: 0.2%, Y: 0.5 %, Fe: margin; cladding process: power: 3000W, spot diameter: 3mm, focal length: 400mm, scanning speed: 1500mm / min, single-layer cladding thickness: 2.5mm, lap rate: 40%.

[0034...

Embodiment 3

[0037] A 3000W semiconductor fiber output laser is used to select appropriate laser cladding parameters to produce roll bearing seat liners for a steel plant, and the base material is 35CrMo.

[0038] (1) Design the tooling according to the size of the required liner, and process the thickness of the base material of the liner to be clad to be 5mm larger than the actual thickness of the drawing.

[0039](2) Fix the processed liner on the tooling with bolts, and put the two into the heating furnace to heat to 300°C at the same time.

[0040] (3) After heating to the required temperature, use the semiconductor fiber output laser to carry out laser cladding while spreading powder. The composition of the alloy material is: C: 0.15%, Cr: 20%, Si: 0.5%, Mo: 1%, Ni: 2.5%, B: 0.5%, Mn: 0.8%, MnN: 0.17%, Y: 0.3 %, Fe: margin; cladding process: power: 3000W, spot diameter: 3mm, focal length: 400mm, scanning speed: 1500mm / min, single layer cladding thickness: 2mm, lap rate: 40%.

[004...

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PUM

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Abstract

The invention discloses a powder material for laser manufacturing of a composite lining plate for a rolling mill house and a mill roll bearing block and a manufacturing method of the lining plate. Thepowder material is prepared from the following components in percentage by mass: 0.1%-0.2% of C, 15%-23% of Cr, 0.2%-0.7% of Si, 0.5%-2% of Mo, 2%-3% of Ni, 0.2%-0.7% of B, 0.2%-1.0% of the Mn, 0.02%-0.2% of MnN, 0.1%-0.5% of Y, and the balance of Fe; and the powder material is fused on a substrate through a laser, and subsequent heat treatment and machining are conducted to complete manufacturing of the lining plate. According to the powder material for laser manufacturing of the composite lining plate for the rolling mill house and the mill roll bearing block and the manufacturing method ofthe lining plate, corrosion resistance of the prepared lining plate is outstanding, the service life of the lining plate is at least 2 times an original lining plate, and the production cost is lowered.

Description

technical field [0001] The invention relates to a method for manufacturing a composite plate, in particular to a method for manufacturing a composite liner for a rolling mill archway and a roll chock in a steel mill. Background technique [0002] Rolling mill archway and roll chocks are important components on the rolling line. The effective gap between the rolling mill frame and the roll chocks is the key to ensure the normal operation of the rolls. Too large or too small gaps will affect the mill operation rate and product qualification rate , and the main function of the liner is to protect the rolling mill frame and bearing housing from corrosion and wear, so as to ensure the stability of continuous production. [0003] During the rolling process, due to the action of cooling water, the oxidized iron scale on the surface of the billet splashes onto the surface of the lining plate, and these foreign matter can enter the working surfaces of the two lining plates, and at th...

Claims

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Application Information

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IPC IPC(8): C23C24/10C22C38/02C22C38/04C22C38/44C22C38/54
Inventor 倪春雷董思远陈海涛
Owner 沈阳大陆激光工程技术有限公司
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