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Babbitt alloy spraying device

A technology of babbitt alloy and spraying device, which is applied in the direction of metal material coating process, coating, fusion spraying, etc., which can solve the problem of uneven coating thickness, affecting the processing surface roughness, flatness, verticality and concentricity, etc. Problems, to avoid uneven coating thickness, improve strength, uniform mixing effect

Active Publication Date: 2020-06-12
ZHEJIANG WANZHONG MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And the existing powder plasma spraying device is usually that the babbitt alloy powder falls into the ion flow sprayed from the spray gun from the top of the spray gun, thereby being sprayed onto the surface of the substrate. Uneven distribution of superalloy powder, the powder coating above the ion flow will be significantly larger than other areas, resulting in uneven coating thickness, affecting the roughness, flatness, verticality and concentricity of the processed surface after spraying

Method used

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Examples

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Embodiment 1

[0016] see Figure 1-3 , a Babbitt metal spraying device, comprising a spraying part 10, a feed part 20 and a cooling part 30, the spraying part 10 includes an ion outflow port 11, an anode 12, a cathode 13 and a plasma gas passage 14, and the ion outflow port 11 is arranged on the right end face of the device and communicates with the plasma gas channel 14. The ion outflow port 11 is cylindrical, so that when the ion flow leaves the ion outflow port 11, the initial velocity direction is horizontal to the right. When the displacement in the horizontal direction is very small, the displacement in the vertical direction can be ignored, so that the ion current can be projected onto the surface of the substrate along the horizontal direction. When the anode 12 collides, it loses too much energy and reduces its speed. The end of the anode 12 away from the ion outflow port 11 is in a semicircular shape. Further, its width gradually increases from left to right. The cathode 13 is arr...

Embodiment 2

[0023] In this embodiment, there is an angle of 45° between the axis of rotation of the babbitt alloy powder outlet 22 and the horizontal line.

[0024] The working principle of the present invention is:

[0025] In this new type of use, the babbitt alloy powder outlet 22 is built in, and there is an angle of 30-45° between the horizontal line, so that the babbitt alloy powder coating is sprayed on a cone surface, which is at the same level as the ion outlet 11. The injected plasma flow is fully mixed, and the setting of the cross-sectional area of ​​the left end in the plasma gas channel 14 is greater than the cross-sectional area of ​​the right end can improve the speed at which the ion flow exits the ion flow outlet 11, so that the adhesion effect of the Babbitt alloy powder coating on the substrate is better. it is good.

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Abstract

The invention discloses a Babbitt alloy spraying device. The Babbitt alloy spraying device comprises a spraying part, a feeding part and a cooling part. The spraying device comprises an ion flow outlet, an anode, a cathode and a plasma gas passageway. The ion flow outlet is formed in the end face of the right side of the device and communicates with the plasma gas passageway. The feeding part comprises a Babbitt alloy powder feeding way and a Babbitt alloy powder outlet. The cooling part comprises a cooling cavity. Babbitt alloy powder is sprayed out from the Babbitt alloy powder outlet in a sector shape and mixed with ion flow ejected in the horizontal direction, thus, the Babbitt alloy powder and the ion flow are evenly mixed, meanwhile, through the arrangement of the conical surface ofthe anode, the speed of the ion flow can be increased, thus, the strength of a coating attached to the surface of a matrix is improved, and the coating obtained through the spraying device has the beneficial effects of being uniform in thickness, high in adhesion strength, high in surface roughness and the like.

Description

technical field [0001] The invention relates to the field of metal spraying equipment, in particular to a babbitt metal spraying device. Background technique [0002] Babbitt alloy is a kind of low melting point bearing alloy with hard particle phase distributed on the soft matrix. It has three series of tin base, lead base and cadmium base. Said white metal, Ugin. Babbitt alloy has excellent anti-friction properties and anti-seizure properties, and is mainly used for bearing bushes, bearings, bushings and bushings of large mechanical spindles. In addition, because of its soft texture and low strength, its silk or powder is often sprayed on steel and other substrates to make bearing bushes for use. And the existing powder plasma spraying device is usually that Babbitt metal powder falls freely into the ion flow sprayed from the spray gun from the top of the spray gun, thereby being sprayed onto the surface of the substrate. If the distribution of alloy powder is not unifo...

Claims

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Application Information

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IPC IPC(8): C23C4/134C23C4/06
CPCC23C4/134C23C4/06Y02P70/10
Inventor 王永丽方灿根方迪江方田王守业
Owner ZHEJIANG WANZHONG MACHINERY MFG