A production process of ultra-low porosity and high densification abrasive

A production process and porosity technology, which is applied in the field of ultra-low porosity and high densification grinder production process, can solve problems such as hot cracks and metal inlays, and achieve the effects of improving wear resistance, reducing porosity and optimizing slag removal.

Active Publication Date: 2022-02-11
马鞍山市雷狮轨道交通装备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems of metal mosaic and thermal cracks easily occurring during the use of existing abrasives, the present invention provides a production process of ultra-low porosity and high densification abrasives, which improves the wear resistance of abrasives and prolongs the service life; at the same time , by optimizing the composition ratio and processing technology, reduce the porosity of the abrasive, make it more dense, and avoid thermal cracks during the use of the abrasive

Method used

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  • A production process of ultra-low porosity and high densification abrasive
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  • A production process of ultra-low porosity and high densification abrasive

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Embodiment 1

[0032] This embodiment provides a production process for ultra-low porosity and high-densification abrasives, which specifically includes the following steps:

[0033] (1) Batching: batching is carried out according to the following formula, and the specific parameters are shown in Table 3, including the following components and parts by weight: 60 parts of iron powder, 8 parts of silicon carbide powder, 12 parts of steel fiber, 10 parts of lignin coupling agent, 10 parts of resin powder;

[0034] (2) Put the batch material into the vacuum mixer, pre-homogenize for 200 seconds, and then start granulation 15 seconds after adding the coupling agent. After 450 seconds of granulation, start vacuum granulation for 250 seconds. Mixture;

[0035] (3) Put the mixture into a vacuum hot press, put it into the matching steel back for vacuum pressing, the specific pressing process is: set the vacuum degree to 0.2MPa, after setting according to the pressing curve in Table 2, click Press ...

Embodiment 2

[0042] This embodiment provides a production process for ultra-low porosity and high-densification abrasives, which specifically includes the following steps:

[0043] (1) Batching: batching is carried out according to the following formula, and the specific parameters are shown in Table 3, including the following components and parts by weight: 55 parts of iron powder, 6 parts of silicon carbide powder, 13 parts of steel fiber, 9 parts of lignin coupling agent, 5 parts resin powder;

[0044] (2) Put the batch material into the vacuum mixer, pre-homogenize for 300 seconds, then put in the coupling agent for 20 seconds, start granulation, after 500 seconds of granulation, start vacuum granulation for 200 seconds. Mixture;

[0045] (3) Put the mixture into a vacuum hot press, put it into the supporting steel back for vacuum pressing, the specific pressing process is: set the vacuum degree to 0.1MPa, after setting according to the pressing curve in Table 3, click Press start butt...

Embodiment 3

[0052] This embodiment provides a production process for ultra-low porosity and high-densification abrasives, which specifically includes the following steps:

[0053] (1) Batching: batching is carried out according to the following formula, and the specific parameters are shown in Table 3, including the following components and parts by weight: 50 parts of iron powder, 7 parts of silicon carbide powder, 15 parts of steel fiber, 8 parts of lignin coupling agent, 10 parts of resin powder;

[0054] (2) Put the batch material into the vacuum mixer, pre-homogenize for 100 seconds, and then start granulation 10 seconds after adding the coupling agent. After 300 seconds of granulation, start vacuum granulation for 200 seconds. Mixture;

[0055] (3) Put the mixture into a vacuum hot press, put it into the supporting steel back for vacuum pressing, the specific pressing process is: set the vacuum degree to 0.3MPa, after setting according to the pressing curve in Table 4, click Press...

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Abstract

The invention discloses a production process of ultra-low porosity and high-densification abrasives, which belongs to the field of rail transit equipment. The components and parts by weight are: 50-65 parts of iron powder, 5-8 parts of silicon carbide powder, 10-15 parts of steel fiber, 5-10 parts of coupling agent and 5-10 parts of resin powder. Including the main process flow: vacuum granulation, vacuum hot-press forming, gas furnace curing, the present invention can reduce the porosity of the grinder and make the product more compact through the above optimized process. Exhaust treatment is required, the combination of the mixture and the steel back is tighter, a good appearance can be obtained, and high-quality abrasives that do not cause metal inlays and thermal cracks during use; and can improve the wear resistance of the abrasive get improved.

Description

technical field [0001] The invention belongs to the field of rail transit equipment, and more specifically relates to a production process of ultra-low porosity and high-densification abrasives. Background technique [0002] The tread cleaner plays the role of cleaning the wheel and increasing the wheel-rail adhesion coefficient to ensure the safety of the service brake. The part of the tread cleaner that directly acts on the wheel is called a grinder. The grinder is a friction part in the tread cleaner that has the functions of cleaning, thickening, and rounding. In view of the above functions, the grinder plays an important role in driving safety. During the production process of the grinder, generally The production process of hot-pressing after mixing with a plow-type mixer, and then curing, however, the grinding wheel produced by this traditional production process has a high porosity and a loose structure, which is easy to use during its use. The occurrence of metal i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/00C04B41/62C04B40/02
CPCC04B26/00C04B41/009C04B41/46C04B41/62C04B2201/20C04B2201/10C04B2201/50C04B2111/00362C04B14/34C04B14/324C04B14/48C04B18/26C04B40/0259C04B40/0263C04B40/0272C04B41/4543
Inventor 贺子铭彭程林
Owner 马鞍山市雷狮轨道交通装备有限公司
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