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A functional layer alloy material for laser manufacturing and remanufacturing mold copper plates

A crystallizer copper plate and alloy material technology, which is applied in the coating process and coating of metal materials, can solve the problems of difficult control and easy cracks, and achieve the effect of ensuring corrosion and improving cladding

Active Publication Date: 2018-08-24
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 content of Cr, W and Mo in this alloy is as high as 36~55%, it is difficult to control during cladding, and cracks are easy to occur

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 1. Remove oil stains, oxides, fatigue layers and other factors that affect the cladding quality on the surface of the copper plate of the crystallizer, and use laser cladding to clad a layer of nickel-based transition alloy with a thickness of 0.8mm, and leave a thickness of 0.5mm after processing.

[0019] 2. Use laser cladding technology and synchronous powder feeding method to scan and clad the functional layer. The powder alloy composition is calculated by mass percentage: Cr: 15%, Ni: 1%, Mo: 2%, W: 4%, C: 1 %, V: 8%, Co: balance, cladding thickness: 2.0mm.

[0020] 3. Process the functional layer after cladding to keep the thickness of 1.5mm.

Embodiment 2

[0022] 1. Remove oil stains, oxides, fatigue layers and other factors that affect the cladding quality on the surface of the copper plate of the crystallizer, and use laser cladding to clad a layer of nickel-based transition alloy with a thickness of 0.8mm, and leave a thickness of 0.5mm after processing.

[0023] 2. Use laser cladding technology and synchronous powder feeding method to scan and clad the functional layer. The powder alloy composition is calculated by mass percentage: Cr: 17%, Ni: 2%, Mo: 3%, W: 5%, C: 2 %, V: 9%, Co: balance, cladding thickness: 1.5mm.

[0024] 3. Process the functional layer after cladding to keep the thickness of 1.0mm.

Embodiment 3

[0026] 1. Remove oil stains, oxides, fatigue layers and other factors that affect the cladding quality on the surface of the copper plate of the crystallizer, and use laser cladding to clad a layer of nickel-based transition alloy with a thickness of 0.8mm, and leave a thickness of 0.5mm after processing.

[0027] 2. Laser cladding technology and synchronous powder feeding method are used to scan and clad the functional layer. The powder alloy composition is calculated by mass percentage: Cr: 20%, Ni: 3%, Mo: 4%, W: 6%, C: 3 %, V: 10%, Co: balance, cladding thickness: 1.0mm.

[0028] 3. Process the functional layer after cladding to keep the thickness of 0.5mm.

[0029] After cladding the functional layer, the metallurgical bonding of the crystallizer copper plate at the interface is good, without cracks, and the functional layer has no cracks, and the hardness is uniform. After being used on the machine, the strengthened mold copper plate shows good wear resistance, corrosio...

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PUM

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Abstract

The invention provides an alloy material of a functional layer of a laser manufacturing and remanufacturing crystallizer copper plate. The alloy material comprises 15%-20% of Cr, 3% or less of Ni, 2%-4% of Mo, 4%-6% of W, 1%-3% of C, 8%-10% of V and the balance Co. A preparation method for the functional layer comprises the following steps that (1) one layer of transitional layer alloy powder with the thickness being 1.0-2.0 mm is pre-arranged on the surface of the crystallizer copper plate through pre-arranging Ni-Al-Cu alloy powder, an optical fiber laser is chosen for scanning and fusion covering, then machining is conducted, and the thickness of the transitional layer is retained to be 0.5-1.5 mm; and (2) a CO2 laser is chosen, the powder is directly fed into a molten pool for scanning and fusion covering by adopting a mode of synchronous powder feeding. According to the alloy material of the functional layer of the laser manufacturing and remanufacturing crystallizer copper plate, a Ni-Al-Cu transitional alloy layer is covered in a fusion mode firstly, then a cobalt-based functional layer is covered on the Ni-Al-Cu transitional alloy layer in a fusion mode, and thus the properties of high temperature, corrosion and abrasion resistance of the surface of a crystallizer are improved.

Description

technical field [0001] The invention relates to a laser cladding alloy material, in particular to a functional layer alloy material for laser manufacturing and remanufacturing crystallizer copper plates. Background technique [0002] Mold is a key component of continuous casting. Due to problems such as thermal cracks, wear, and corrosion on the surface of the copper plate of the mold during use, it directly affects the surface quality of the billet, the casting speed of the continuous casting machine, and the continuous operation rate. . Therefore, mold copper plates with good thermal conductivity, high strength, high wear resistance and high corrosion resistance are of vital significance to the development of continuous casting technology. [0003] At present, the surface functional layer with superior corrosion resistance, wear resistance and thermal fatigue resistance is mainly formed on the surface of the crystallizer through surface treatment technologies such as elec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C19/07C23C24/10
CPCC22C19/07C23C24/103
Inventor 董思远陈海涛倪春雷
Owner 沈阳大陆激光工程技术有限公司
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