A preparation process of tin-based babbitt alloy coating material based on 3D printing technology

A tin-based babbitt alloy, 3D printing technology, applied in metal material coating process, coating, additive processing, etc., can solve the problems of material waste, large particle size, low atomization efficiency, etc., and achieve controllable particle size Sexual enhancement, uniform tissue refinement, and good flatness

Active Publication Date: 2021-04-06
SHENKE SLIDE BEARING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above-mentioned prior art discloses the preparation of tin-based alloy powder and its application enlightenment in laser cladding, the sphericity of the tin-based babbitt alloy powder currently available for 3D printing is only 83%, the particle size is relatively large, and the fog The conversion efficiency is low, and most of the steel surface needs to be tinned, and in order to ensure its good structure and grain shape, it is necessary to cut off the final solidified part, resulting in a serious waste of materials

Method used

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  • A preparation process of tin-based babbitt alloy coating material based on 3D printing technology
  • A preparation process of tin-based babbitt alloy coating material based on 3D printing technology
  • A preparation process of tin-based babbitt alloy coating material based on 3D printing technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1) Add antimony and copper into the vacuum melting chamber, evacuate to 0.5Pa, first raise the temperature to 800°C at a rate of 5°C / min, and keep warm for 5 minutes, then raise the temperature to 1050°C at a rate of 1°C / min, and keep warm After complete melting, lower the temperature to 800°C, add tin and continue to stir evenly, then raise the temperature to 900°C at a rate of 1°C / min, add bismuth, lead and cadmium, stir at 8000r / min at a high speed, and solidify to obtain ZSnSb11Cu6 tin-based Babbitt alloy ingot, wherein the mass percentage of the components in the tin-based Babbitt alloy ingot is: Sn balance, Cu 5.5-6.5, Sb10.0-12.0, Fe≤0.1, Zn≤0.01, Bi≤0.03, As ≤0.1, Al≤0.01, Pb≤0.35, Cd≤0.35, other elements ≤0.55.

[0042] (2) The tin-based Babbitt alloy ingot flows downward from the diversion nozzle, and passes through the secondary laminar flow injection system composed of the restricted nozzle and the close-coupled nozzle. Under the working pressure of 2MPa, t...

Embodiment 2

[0047] (1) Add antimony and copper into the vacuum melting chamber, pump the vacuum to 3Pa, first raise the temperature to 850°C at a rate of 10°C / min, keep it warm for 10 minutes, then raise the temperature to 1250°C at a rate of 3°C / min, and keep it warm until After complete melting, lower the temperature to 850°C, add tin and continue to stir evenly, then raise the temperature to 950°C at a rate of 5°C / min, add bismuth, lead and cadmium, stir at a high speed of 12000r / min, and solidify to obtain ZSnSb11Cu6 tin base bar Babbitt alloy ingot, wherein the mass percentage of the components in the tin-based babbitt alloy ingot is: Sn balance, Cu 5.5-6.5, Sb10.0-12.0, Fe≤0.1, Zn≤0.01, Bi≤0.03, As≤ 0.1, Al≤0.01, Pb≤0.35, Cd≤0.35, other elements≤0.55.

[0048] (2) The tin-based Babbitt alloy ingot flows downward from the diversion nozzle, and through the secondary laminar flow injection system composed of the restricted nozzle and the close-coupled nozzle, under the working pressure...

Embodiment 3

[0053](1) Add antimony and copper into the vacuum melting chamber, evacuate to 1.5Pa, first raise the temperature to 830°C at a rate of 6°C / min, keep it warm for 6 minutes, then raise the temperature to 1150°C at a rate of 1.5°C / min, and keep warm After complete melting, lower the temperature to 830°C, add tin and continue to stir evenly, then raise the temperature to 920°C at a rate of 3°C / min, add bismuth, lead and cadmium, stir at a high speed of 10000r / min, and solidify to obtain ZSnSb11Cu6 tin-based Babbitt alloy ingot, wherein the mass percentage of the components in the tin-based Babbitt alloy ingot is: Sn balance, Cu 5.5-6.5, Sb10.0-12.0, Fe≤0.1, Zn≤0.01, Bi≤0.03, As ≤0.1, Al≤0.01, Pb≤0.35, Cd≤0.35, other elements ≤0.55.

[0054] (2) The tin-based Babbitt alloy ingot flows downward from the diversion nozzle, and passes through the secondary laminar flow injection system composed of the restricted nozzle and the close-coupled nozzle. Under the working pressure of 4MPa, ...

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Abstract

The invention provides a preparation process of a tin-based babbitt alloy coating material based on 3D printing technology, which includes the following steps: adding antimony and copper into a vacuum melting chamber to completely melt them, cooling down and adding tin and continuing to stir evenly, and then adding Bismuth, lead and cadmium are stirred at high speed and solidified to obtain ZSnSb11Cu6 tin-based Babbitt alloy ingot; the tin-based Babbitt alloy ingot is flowed downward from the diversion nozzle, and the secondary laminar flow jet formed by the restricted nozzle and the close-coupled nozzle system, and then use the high-pressure airflow from the nozzle to atomize and break the metal liquid into droplets, and the droplets are separated, cooled and solidified under the action of free fall and centrifugal force to obtain tin-based Babbitt alloy powder; the heat-treated substrate is polished with coarse sandpaper Finally, the tin-based Babbitt alloy powder is conveyed while laser cladding, and is clad on the surface of the steel substrate through multi-layer and multi-channel laser cladding. Finally, the surface and edge milling are processed to form a tin-based Babbitt alloy based on 3D printing technology. coating material.

Description

technical field [0001] The invention belongs to the technical field of babbitt alloy coating, and in particular relates to a preparation process of a tin-based babbitt alloy coating material based on 3D printing technology. Background technique [0002] Babbitt alloy has good compliance, fatigue resistance and mosaicability. Babbitt alloy in the form of powder or wire can be used to prepare and repair the bearing pad material by spraying or pouring. It is an excellent bearing pad material, but due to the Babbitt alloy The melting point of the babbitt alloy is low, and the high temperature in the process of preparation and use will cause the babbitt alloy to soften, affect the shape of the babbitt alloy, and then affect the service life of the material. [0003] Metal 3D printing technology uses metal powder as raw material, according to the designed three-dimensional model, through software layered discrete and numerical control molding system, using laser beams, hot melt no...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C24/10C22C13/02B22F1/00B22F9/08C22C38/02C22C38/04C22C38/42B33Y10/00B33Y70/00
CPCB22F1/0003B22F9/082B33Y10/00B33Y70/00C22C13/02C22C38/002C22C38/02C22C38/04C22C38/42C23C24/103
Inventor 何建南张远海蔡鹤陈孝尚黄燕红符建标
Owner SHENKE SLIDE BEARING
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