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Ball valve surface laser cladding nickel-based material and additive manufacturing process thereof

A laser cladding and additive manufacturing technology, applied in metal material coating process, additive processing, coating and other directions, can solve the problems of corrosion resistance and high temperature resistance to be improved, unsatisfactory surface performance of ball valves, etc., to achieve good resistance. High temperature, good red hardness, and the effect of avoiding falling off

Inactive Publication Date: 2020-03-27
江苏特维克科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above technical problems, the present invention provides a laser cladding nickel-based material on the surface of a ball valve and its additive manufacturing process. The surface additive manufacturing is carried out through laser cladding to improve the surface performance of the valve ball and valve seat. Nickel-based materials solve the problem that the surface performance of the existing ball valve is not ideal, and the surface treatment using the existing method has a high dilution rate of the welding layer, and the problems of corrosion resistance and high temperature resistance need to be improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A nickel-based material for laser cladding on the surface of a ball valve, the chemical composition and mass fraction of the nickel-based material are: 2.0% B, 0.3% C, 10.0% Cr, 2.5% Fe, 3.0% Si, 10.0% W, the balance Ni. The nickel-based material is in the form of dry fine powder and is used for laser cladding to form a hard alloy layer.

[0024] The surface of the valve ball and the ball seat is additively manufactured through the above-mentioned nickel-based material. The specific process includes the following steps:

[0025] Step 1, pretreat the surface of the valve ball and ball seat; specifically, the surface of the valve ball and ball seat is bright without oxidation or corrosion, and the surface is cleaned and dried with alcohol.

[0026] Step 2, performing cemented carbide laser cladding on the surface of the valve ball, and cladding the nickel-based material to form a nickel-based cemented carbide layer of the valve ball;

[0027] Step 3, performing cemented...

Embodiment 2

[0030] A kind of laser cladding nickel-based material on the surface of a ball valve, the chemical composition and mass fraction of the nickel-based material are: 4.0% B, 1% C, 20.0% Cr, 4.5% Fe, 5.0% Si, 20.0% W, the balance Ni. The nickel-based material is in the form of dry fine powder and is used for laser cladding to form a hard alloy layer.

[0031] The surface of the valve ball and the ball seat is additively manufactured through the above-mentioned nickel-based material. The specific process includes the following steps:

[0032] Step 1, pretreat the surface of the valve ball and ball seat; specifically, the surface of the valve ball and ball seat is bright without oxidation or corrosion, and the surface is cleaned and dried with alcohol.

[0033] Step 2, performing cemented carbide laser cladding on the surface of the valve ball, and cladding the nickel-based material to form a nickel-based cemented carbide layer of the valve ball.

[0034] Step 3, performing cement...

Embodiment 3

[0037]A nickel-based material for laser cladding on the surface of a ball valve, the chemical composition and mass fraction of the nickel-based material are: 3.0% B, 0.6% C, 15.0% Cr, 3.5% Fe, 4.0% Si, 15.5% W, the balance Ni. The nickel-based material is in the form of dry and fine powder, the fineness of which is controlled above 200 mesh, and is used for laser cladding to form a cemented carbide layer.

[0038] The surface of the valve ball and the ball seat is additively manufactured through the above-mentioned nickel-based material. The specific process includes the following steps:

[0039] Step 1. Pretreat the surface of the valve ball and seat; the specific method of pretreatment can be determined according to the surface quality of the valve ball and seat. The pretreatment method is a conventional surface treatment method, such as turning, grinding, spraying, etc. Pills, cleaning, etc. If the surface of the valve ball and ball seat is dull and has a thin oxide film,...

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PUM

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Abstract

The invention discloses a ball valve surface laser cladding nickel-based material and an additive manufacturing process thereof. The nickel-based material is prepared from the following chemical components in percentage by mass: 2.0-4.0% of B, 0.3-1% of C, 10.0-20.0% of Cr, 2.5-4.5% of Fe, 3.0-5.0% of Si, 10.0-20.0% of W and the balance of Ni. The method is mainly used for valve trim additive manufacturing of a ball valve, meets the working condition requirements of the surfaces of the valve ball and a ball seat through process transformation and material change, meets the requirements for high hardening, high-temperature corrosion resistance and high-temperature abrasion resistance of the surface of base metal, and achieves a low-cost and high-performance surface treatment process throughcontinuous research, development and innovation.

Description

technical field [0001] The invention relates to the field of pumps, in particular to a laser cladding nickel-based material on the surface of a ball valve and an additive manufacturing process thereof. Background technique [0002] A ball valve is a valve that uses a sphere as a closing member to realize switching action. According to the different materials used for the ball valve seat, it can be divided into soft seal ball valve and hard seal ball valve, among which the hard seal valve seat is mostly made of metal material. Because the ball valve has the characteristics of fast switching and convenient operation, the market prospect is broad. In recent years, the development of ball valves has been designed so that it can only be used for throttling and flow control, such as V-type ball valves. Among them, there is a strong shear force between the V-shaped ball core of the hard-sealed V-shaped ball valve and the metal valve seat of the surfacing welding carbide, which is...

Claims

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Application Information

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IPC IPC(8): C23C24/10C22C19/05B33Y10/00B33Y70/00
CPCB33Y10/00B33Y70/00C22C19/056C23C24/103
Inventor 陈俊琪
Owner 江苏特维克科技有限公司
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