Preparation process of wear-resistant stainless steel alloy coating

A technology of alloy coating and preparation process, which is applied in the field of stainless steel alloys, can solve problems such as difficulty in strengthening the coating surface, large residual stress of the coating, cracking or even peeling, etc., and achieves small surface roughness, large thickness variation range, The effect of improving wear resistance

Inactive Publication Date: 2019-04-16
淮北市菲美得环保科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the large mismatch of thermal expansion coefficient and elastic modulus between tungsten carbide and nickel-based alloys, the coatings prepared by flame spraying and explosive spraying are prone to cracking or even peeling off due to the weak bonding force between the coating and the substrate during use; The residual stress of

Method used

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Embodiment Construction

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0021] A preparation process for a wear-resistant stainless steel alloy coating, comprising the following steps:

[0022] S1, the selection of raw materials: the selected raw materials are tungsten carbide powder, NiCrBSi self-fluxing brazing alloy powder, polytetrafluoroethylene, 316L stainless steel plate, and the particle size of the tungsten carbide powder is 40- 70um, the particle diameter of described NiCrBSi self-fluxing brazing alloy powder is 50-80um;

[0023] S2. Alloy powder embedded in polytetrafluoroethylene: mix NiCrB...

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Abstract

The invention discloses a preparation process of a wear-resistant stainless steel alloy coating. The preparation process comprises the following steps of S1, selection of raw materials, S2, embedmentof polytetrafluoroethylene in alloy powder, S3, preparation and stacking of metal cloth, S4, brazing, and S5, coating of the alloy coating on the stainless steel surface. Tungsten carbide hard alloy powder and NiCrBSi self-fluxing brazing alloy powder are used as a hard phase and subjected to rolling with polytetrafluoroethylene into the cloth, then the cloth adheres to the surface of stainless steel and then brazed into a metallurgical bonding composite coating, and the flexible metal cloth can adhere to the surface of a complex structural part; when brazing, the metal cloth and a substrate are simultaneously heated, the thermal residual stress of the coating is small, the thickness variation range of the coating is wide, and the surface roughness is small, so that the stainless steel surface has high wear resistance and erosion resistance; and the anti-abrasive wear performance of the obtained coating is much higher than the anti-abrasive wear performance of a flame surfacing coating, and the wear resistance and tensile strength of a stainless steel substrate are significantly improved.

Description

technical field [0001] The invention belongs to the technical field of stainless steel alloys, and in particular relates to a preparation process of a wear-resistant stainless steel alloy coating. Background technique [0002] Stainless steel is the abbreviation of stainless acid-resistant steel, and the steel grades that are resistant to weak corrosive media such as air, steam, water, or have stainless properties are called stainless steel; The steel type is called acid-resistant steel. Due to the difference in chemical composition of the two, their corrosion resistance is different. Ordinary stainless steel is generally not resistant to chemical medium corrosion, while acid-resistant steel is generally stainless. Stainless steel alloy coating refers to the protective layer coated on the surface of the workpiece. The protective layer protects the stainless steel and improves the wear resistance and corrosion resistance of the stainless steel. [0003] Tungsten carbide rei...

Claims

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Application Information

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IPC IPC(8): B22F7/02C23C14/16C23C14/35C23C24/10C25D11/26C23C28/00
CPCB22F7/02B22F2007/045C23C14/165C23C14/35C23C24/103C23C28/322C23C28/324C23C28/3455C25D11/26
Inventor 刘永飞马敏
Owner 淮北市菲美得环保科技有限公司
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