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Compound centrifugal manufacturing method for axial sleeve of bushing

A technology of centrifugal compounding and manufacturing method, applied in coating, metal material coating process, hot dip plating process, etc., can solve the problems of limited thickness of spray coating, rough wear surface and cracking of surface sprayed materials

Inactive Publication Date: 2009-12-09
PANGANG GROUP VANADIUM TITANIUM & RESOURCES +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, iron-based materials are not wear-resistant, have a short service life, rough wear surfaces, and deep grooves; ceramic materials are prone to cracks caused by impact during use, and their service life is unstable; limited thickness

Method used

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  • Compound centrifugal manufacturing method for axial sleeve of bushing
  • Compound centrifugal manufacturing method for axial sleeve of bushing
  • Compound centrifugal manufacturing method for axial sleeve of bushing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The bottom layer of the centrifugally compounded sinking roller and stabilizing roller bushing is made of 00cr17Ni14Mo2 stainless steel, and the chemical composition is C≤0.03%, Cr16%-18%, Ni10%-14%, Mo2.00%-3.00%, and Mn≤2.00%, Si≤1.00%; the working surface layer is a cobalt-based alloy, and the cobalt-based alloy contains: Si 0.5%, Mn 0.3%, C 0.6%, Al 0.5%, P<0.07%, S <0.07%, V 0.1%, Ti 0.1%, Cr25%, Fe6%, Ni5%, Nb1.5%, W 3%, Mo3%, and the rest is Co. The service time of the bearing pad and sleeve in the prior art is significantly lower than that of the bearing pad and sleeve of the present invention in the same unit, and the service time of the bearing pad and sleeve of the present invention is more than three times that.

Embodiment 2

[0040] Centrifugal composite sinking roller and stabilizing roller bushing bottom layer substrate is austenitic heat-resistant stainless steel SUS316, chemical composition is C≤0.08%, Cr 16%-18%, Ni 10%-14%, Mo 2.00%-3.00% , Mn≤2.00%, Si≤1.00%; the working surface layer is a cobalt-based alloy, and the composition of the cobalt-based alloy is: Al 0.5%, Si 0.4%, Mn 0.7%, C 0.6%, Cr 20%, Fe 12%, Ni 3%, Nb 1.0%, W5%, Mo 2%, V0.2%, Ti0.2%, and the balance is Co. The service time of the bearing pad and sleeve in the prior art is significantly lower than that of the bearing pad and sleeve of the present invention in the same unit, and the service time of the bearing pad and sleeve of the present invention is more than three times that.

Embodiment 3

[0042] Centrifugal composite sinking roller and stabilizing roller bushing bush bottom substrate is heat-resistant stainless steel ZG07Cr19Ni9, chemical composition is C0.07%, Cr18-21%, Ni8.0-11.0%, Mn1.5%, Si1.5%, P ≤0.040%, S≤0.030%; the working surface layer is a cobalt-based alloy, and the composition of the cobalt-based alloy is: Al 0.8%, Si 1.0%, C 1.5%, Mn 0.7%, Cr26%, Fe 12%, Ni 3% , Nb 1.0%, W5%, Mo 2%, V0.2%, Ti0.2%, and the rest is Co. The service time of the bearing pad and sleeve in the prior art is significantly lower than that of the bearing pad and sleeve of the present invention in the same unit, and the service time of the bearing pad and sleeve of the present invention is more than three times that.

[0043] Figure 6A A photograph showing the corrosion resistance of a bearing pad bushing according to the invention. Figure 6A It is the appearance of the interface of the cobalt-based alloy according to the present invention after being soaked in the hot-di...

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Abstract

The invention discloses a compound centrifugal manufacturing method for an axial sleeve of a bushing, which comprises the following steps: smelting molten metal of an iron-based material and molten metal of a cobalt-base alloy in two smelting furnaces respectively; performing deslagging and deoxidation treatment after the melting down of the molten metal of the iron-based material and the molten metal of the cobalt-base alloy; performing centrifugal casting on the outer layer molten metal of the cobalt-base alloy first, and adding an acid slag protective agent along with the outer layer molten metal of the cobalt-base alloy when the outer layer molten metal of the cobalt-base alloy is cast to 20 to 30 percent of the gross weight of the outer layer molten metal of the cobalt-base alloy needing to be cast; passing 3 to 5 minutes after the outer layer molten metal is cast, and after solidifying the outer layer molten metal of the cobalt-base alloy, casting the inner layer molten metal of the iron-based material until finishing; and under the action of centrifugal force, cooling and solidifying the inner layer molten metal and the outer layer molten metal into a blank of a compound centrifugal axial sleeve of a bushing, and assembling and processing the blank.

Description

technical field [0001] The invention relates to a centrifugal composite manufacturing method of bearing bushes, in particular to a centrifugal composite manufacturing method of bearing bushes for sinking rolls and stabilizing rolls. Background technique [0002] Due to its high production efficiency, hot-coating has been widely used in metallurgy and coated steel plate industries. But at present, the used bearing pads and sleeves of sinking rolls and stabilizing rolls mostly adopt iron-based materials, ceramic materials or surface sprayed materials. However, iron-based materials are not wear-resistant, have a short service life, rough wear surfaces, and deep grooves; ceramic materials are prone to cracks caused by impact during use, and their service life is unstable; Thickness is limited. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a centrifugal composite manufacturing method of the bearing bushes at the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D13/00B22D19/16C23C2/00C22C19/07C22C30/00
Inventor 贺同正
Owner PANGANG GROUP VANADIUM TITANIUM & RESOURCES
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