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Laser cladding material, laser cladding method and spring steel components and parts repaired by method

A laser cladding and functional layer technology, applied in the field of spring steel parts, can solve the problems of stress concentration, parts scrapping, high carbon content of the base material, etc., and achieve the effect of improving the friction and wear resistance

Inactive Publication Date: 2016-08-10
PINGGAO GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the repair process of spring steel parts, the existing laser cladding materials and repair methods are not very effective. The main reasons can be divided into two categories: (1) due to the high carbon content of the base material, the cladding layer It is not easy to combine with the matrix; (2) Since the temperature rise rate of the parts is too fast during the laser treatment process, and the cooling process cooling rate is too fast after the laser treatment, the internal stress of the parts will be concentrated due to the action of various factors, resulting in cracking. scrapped, resulting in greater economic losses

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The laser cladding material of this embodiment includes an adhesive layer material and a functional layer material;

[0038] The bonding layer material is composed of the following components in mass percentage: Ni 40%, B 0.5%, Si 0.5%, C 0.4%, and the balance is Fe;

[0039] The functional layer material is composed of the following components in mass percentage: Ni 9%, WC 1.5%, B 0.5%, Si 1.0%, C 0.3%, and the balance is Fe.

[0040]The above-mentioned laser cladding materials are used to repair the spring steel parts, and the wear-resistant parts of the spring steel size are used as the matrix, and the grade of the spring steel is 70 steel. The laser cladding method used specifically includes the following steps:

[0041] 1) Substrate pretreatment: raise the temperature of the substrate from room temperature to 500°C and keep it warm for 40 minutes to obtain the pretreated substrate;

[0042] 2) Laser cladding:

[0043] Put the adhesive layer material powder into ...

Embodiment 2

[0048] The laser cladding material of this embodiment includes an adhesive layer material and a functional layer material;

[0049] The bonding layer material is composed of the following components in mass percentage: Ni 48%, B 0.6%, Si 1.0%, C 0.3%, and the balance is Fe;

[0050] The functional layer material is composed of the following components in mass percentage: Ni 10%, WC 1.2%, B 0.6%, Si 0.5%, C 0.4%, and the balance is Fe.

[0051] The above-mentioned laser cladding materials are used to repair spring steel parts, and the spring steel size failure wear-resistant parts are used as the matrix, and the grade of the spring steel is 55Si2Mn. The laser cladding method used specifically includes the following steps:

[0052] 1) Substrate pretreatment: raise the temperature of the substrate from room temperature to 480°C and keep it warm for 2 hours to obtain the pretreated substrate;

[0053] 2) Laser cladding:

[0054] Put the adhesive layer material powder into the s...

Embodiment 3

[0059] The laser cladding material of this embodiment includes an adhesive layer material and a functional layer material;

[0060] The bonding layer material is composed of the following components in mass percentage: Ni 44%, B 0.7%, Si 0.8%, C 0.3%, and the balance is Fe;

[0061] The functional layer material is composed of the following components in mass percentage: Ni 12%, WC 1.3%, B 0.7%, Si 0.8%, C 0.3%, and the balance is Fe.

[0062] The above-mentioned laser cladding materials are used to repair spring steel parts, and the spring steel size failure wear-resistant parts are used as the matrix, and the grade of the spring steel is 65Mn. The laser cladding method used specifically includes the following steps:

[0063] 1) Substrate pretreatment: raise the temperature of the substrate from room temperature to 490°C and keep it warm for 1 hour to obtain the pretreated substrate;

[0064] 2) Laser cladding:

[0065] Put the adhesive layer material powder into the synch...

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Abstract

The invention discloses a laser cladding material, a laser cladding method and spring steel components and parts repaired by the method. The laser cladding material comprises a bonding layer material and a functional layer material. The bonding layer material is composed of the following components in percentage by mass: 40-48% of Ni, 0.5-0.7% of B, 0.5-1.0% of Si, 0.3-0.4% of C and the balance Fe; the functional layer material is composed of the following components in percentage by mass: 9-15% of Ni, 1.0-1.5% of WC, 0.5-0.7% of B, 0.5-1.0% of Si, 0.3-0.4% of C and the balance Fe. The laser cladding material is designed by gradient cladding, so that the bonding force between a cladding layer and a substrate is improved, and the frictional wear resistance of the material is improved. The laser cladding material is suitable for a laser treatment process for preparing a wear-resistant coating by a spring steel material and is suitable for repairing failed wear-resistant components and parts in size of spring steel.

Description

technical field [0001] The invention belongs to the technical field of laser cladding, specifically relates to a laser cladding material, and also relates to a laser cladding method using the laser cladding material and a spring steel part repaired by the laser cladding method. Background technique [0002] Spring steel refers to steel specially used to manufacture springs and elastic elements due to its elasticity in the quenched and tempered state. Spring steel has excellent comprehensive properties, such as mechanical properties (especially elastic limit, strength limit, yield ratio), anti-elasticity reduction performance (that is, anti-elasticity reduction performance, also known as anti-relaxation performance), fatigue performance, hardenability, Physical and chemical properties (heat resistance, low temperature resistance, oxidation resistance, corrosion resistance, etc.). [0003] There are many types of spring steel, such as 70 steel, 55Si2Mn, 65Mn and 50CrVA, etc.,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10C22C30/00C22C38/08C22C38/02C22C38/54
CPCC22C30/00C22C38/002C22C38/02C22C38/08C22C38/54C23C24/10
Inventor 李宝增林生军韩丽娟袁端鹏张柳丽谢美芳罗军
Owner PINGGAO GRP