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A production process of plasma tungsten carbide spraying

A production process, tungsten carbide technology, applied in metal material coating process, coating, fusion spraying, etc., can solve the problem of smooth coating, low density, complicated tungsten carbide spraying process, and easy change of matrix structure And other problems, to achieve the effect of good effect, high density, less impurities

Inactive Publication Date: 2019-11-15
无锡科特共创装备制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the surface of the coating sprayed by the arc method is poor, and it can reach the surface of the general precision workpiece after processing.
[0004] The traditional tungsten carbide spraying process is complicated, the coating is smooth, the density is not high, the matrix structure is easy to change, the equipment maintenance cost is high, and a large amount of dust will be generated during the spraying process, which is easy to pollute the surrounding environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A plasma tungsten carbide spraying production process, the specific steps of the plasma tungsten carbide spraying production process are as follows:

[0030] S1: Workpiece pretreatment, draw the workpiece that needs to be sprayed into CAD drawing mode, and protect the area on the workpiece that needs to be protected according to the drawing style;

[0031] S2: Sand blasting treatment, the workpiece to be sprayed is powered by compressed air to form a high-speed spray beam to spray the spray material to the surface of the workpiece to be treated at high speed, so that the appearance or shape of the workpiece surface changes;

[0032] S3: Grinding and polishing treatment, send the workpiece that has been sandblasted in S2 to a polishing machine for grinding and polishing treatment, the speed of the polishing machine is 1500r / min, and the processing accuracy: surface roughness Ra≤0.25μm;

[0033] S4: Tungsten carbide treatment, the tungsten carbide raw material is crushed ...

Embodiment 2

[0044] A plasma tungsten carbide spraying production process, the specific steps of the plasma tungsten carbide spraying production process are as follows:

[0045] S1: Workpiece pretreatment, draw the workpiece that needs to be sprayed into CAD drawing mode, and protect the area on the workpiece that needs to be protected according to the drawing style;

[0046] S2: Sand blasting treatment, the workpiece to be sprayed is powered by compressed air to form a high-speed spray beam to spray the spray material to the surface of the workpiece to be treated at high speed, so that the appearance or shape of the workpiece surface changes;

[0047] S3: Grinding and polishing treatment, send the workpiece that has been sandblasted in S2 to a polishing machine for grinding and polishing treatment, the speed of the polishing machine is 2000r / min, and the processing accuracy: surface roughness Ra≤0.25μm;

[0048] S4: Tungsten carbide treatment, the tungsten carbide raw material is crushed ...

Embodiment 3

[0059] A plasma tungsten carbide spraying production process, the specific steps of the plasma tungsten carbide spraying production process are as follows:

[0060] S1: Workpiece pretreatment, draw the workpiece that needs to be sprayed into CAD drawing mode, and protect the area on the workpiece that needs to be protected according to the drawing style;

[0061] S2: Sand blasting treatment, the workpiece to be sprayed is powered by compressed air to form a high-speed spray beam to spray the spray material to the surface of the workpiece to be treated at high speed, so that the appearance or shape of the workpiece surface changes;

[0062] S3: Grinding and polishing treatment, send the workpiece that has been sandblasted in S2 to a polishing machine for grinding and polishing treatment, the speed of the polishing machine is 2500 r / min, and the processing accuracy: surface roughness Ra≤0.25μm;

[0063] S4: Tungsten carbide treatment, the tungsten carbide raw material is crushed...

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Abstract

The invention discloses a plasma tungsten carbide spraying production process. The plasma tungsten carbide spraying production process includes the following specific steps of S1: pretreatment of a workpiece; S2: sandblasting treatment; S3: grinding and polishing treatment; S4: tungsten carbide treatment; S5: thermal reaction; S6: mechanical reinforcement; S7: equipment adjustment; S8: powder supplying; S9: spraying distance and spraying angle; S10: preheating treatment of the workpiece; S11 spraying; and S12: cooling and packaging of the workpiece. According to the tungsten carbide spraying production process, a coating obtained by means of plasma spraying is flat and smooth and high in compactness, the powder deposition rate is very high, a matrix is not electrified or melted in the spraying process, the matrix and a spraying fun are high in relative movement speed, and a matrix structure is made not to change; and tungsten carbide powder is subjected to mechanical reinforcing treatment, the spraying fusion penetrating effect is good, the spraying and cooling process is performed in a ventilating and dust removing indoor space, powder dust generated in the work process can be effectively adsorbed and filtered out, the work environment is guaranteed, and the plasma tungsten carbide spraying production process is suitable for wide popularization.

Description

technical field [0001] The invention relates to the technical field of tungsten carbide spraying, in particular to a plasma tungsten carbide spraying production process. Background technique [0002] Spraying is a coating method in which spray guns or disc atomizers are dispersed into uniform and fine droplets by means of pressure or centrifugal force and applied to the surface of the object to be coated. It can be divided into air spraying, airless spraying, electrostatic spraying and various derivative methods of the above basic spraying forms, such as large flow and low pressure atomization spraying, thermal spraying, automatic spraying, multi-group spraying, etc. The production efficiency of spraying operations is high, It is suitable for manual operation and industrial automation production. It has a wide range of applications, mainly in hardware, plastics, furniture, military industry, ships and other fields. It is the most commonly used coating method today; the envir...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C4/134C23C4/10C23C4/02
CPCC23C4/02C23C4/10C23C4/134
Inventor 唐静波
Owner 无锡科特共创装备制造有限公司
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