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Abrasion resistance treatment method for sliding bearing of centrifugal machine

A sliding bearing and wear-resistant treatment technology, which is used in the fields of chemical industry, food machinery and pharmaceutical industry, can solve the problems of reducing the working efficiency and wear of the centrifuge, and achieve the effect of reducing the friction coefficient, reducing the impurity content of the surface layer and improving the service life.

Active Publication Date: 2017-09-22
蚌埠精工制药机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The mechanical equipment of the pharmaceutical industry is an important part of the chemical machinery field, and the centrifuge is an important mechanical equipment in the pharmaceutical machinery. The working condition of the centrifuge has an important direct impact on the quality of the drug, especially the sliding bearings used in the centrifuge. The working quality and life of the centrifuge have a great impact. The existing centrifuge runs for a long time under the load of 117%, and there is serious wear between the bearing and the journal, which greatly reduces the working efficiency of the centrifuge.

Method used

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  • Abrasion resistance treatment method for sliding bearing of centrifugal machine
  • Abrasion resistance treatment method for sliding bearing of centrifugal machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A wear-resistant treatment method for a sliding bearing for a centrifuge, comprising:

[0017] (1) Heat the inner and outer rings of the sliding bearing to 360°C for 20 minutes, then heat to 900°C for 50 minutes, and then use neon to continuously cool the inner and outer rings of the sliding bearing to room temperature;

[0018] (2) Place the inner ring and outer ring of the sliding shaft in a nitriding furnace, heat up to 450°C for 10 minutes, pass nitrogen gas, furnace pressure 30 mm water column, keep warm for 12 hours, then raise the temperature to 550°C, and then Introduce carbon dioxide, keep the volume of carbon dioxide and nitrogen in the furnace at 4:1, keep the furnace pressure at 70 mm water column, keep warm for 20 hours, then cool to 150°C and leave the furnace, and then use neon to continuously heat the inner and outer rings of the sliding bearing. Cool down to room temperature;

[0019] (3) After washing once with hot water, dry it naturally, then soak i...

Embodiment 2

[0026] A wear-resistant treatment method for a sliding bearing for a centrifuge, comprising:

[0027] (1) Heat the inner and outer rings of the sliding bearing to 400°C for 20 minutes, then heat to 950°C for 50 minutes, and then use neon gas to continuously cool the inner and outer rings of the sliding bearing to room temperature;

[0028] (2) Place the inner ring and outer ring of the sliding shaft in a nitriding furnace, heat up to 470°C for 10 minutes, pass nitrogen gas, furnace pressure 40 mm water column, keep warm for 14 hours, then raise the temperature to 580°C, and then Introduce carbon dioxide, keep the volume of carbon dioxide and nitrogen in the furnace at 6:1, keep the furnace pressure at 78 mm water column, keep warm for 25 hours, then cool to 150°C and leave the furnace, and then use neon to continuously heat the inner and outer rings of the sliding bearing. Cool down to room temperature;

[0029] (3) After washing with hot water once, let it dry naturally, the...

Embodiment 3

[0036] A wear-resistant treatment method for a sliding bearing for a centrifuge, comprising:

[0037] (1) Heat the inner and outer rings of the sliding bearing to 380°C for 20 minutes, then heat to 930°C for 50 minutes, and then use neon gas to continuously cool the inner and outer rings of the sliding bearing to room temperature;

[0038] (2) Place the inner and outer rings of the sliding shaft in a nitriding furnace, heat up to 460°C and preheat for 10 minutes, pass nitrogen gas, furnace pressure 35 mm water column, keep warm for 13 hours, then raise the temperature to 570°C, and at the same time Introduce carbon dioxide, keep the volume of carbon dioxide and nitrogen in the furnace at 5:1, keep the furnace pressure at 73mm water column, keep warm for 22 hours, then cool to 150°C and leave the furnace, and then use neon to continuously heat the inner ring and outer ring of the sliding bearing. Cool down to room temperature;

[0039] (3) After washing once with hot water, le...

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Abstract

The invention discloses an abrasion resistance treatment method for a sliding bearing of a centrifugal machine. The abrasion resistance treatment method comprises the steps that firstly, the sliding bearing is subjected to heating and heat preservation treatment, and then cooling is carried out; secondly, nitrogen treatment is carried out; thirdly, the sliding bearing is washed and treated through a cocoyl sodium methyl taurate solution; and fourthly, heating and heat preservation treatment are carried out. By means of the abrasion resistance treatment method for the sliding bearing of the centrifugal machine, the surface hardness and the abrasion resistance of the sliding bearing can be remarkably improved, the friction coefficient is reduced, the surface material structure and performance of an inner ring and an outer ring of the bearing are greatly improved, grains on a surface layer are refined, the impurity content of the surface layer is greatly reduced, the resistance of dislocation movement is increased, meanwhile, the plasticity and tenacity are also improved by different degrees, when the sliding bearing works in the centrifugal machine, especially after the sliding bearing works at the 117 % load for a long time, the sliding bearing can still keep a good running state, abrasion is slight, the abrasion amount is small, the service life of the sliding bearing is greatly prolonged, and the working efficiency of the centrifugal machine is improved.

Description

technical field [0001] The invention belongs to the fields of pharmacy, chemical industry and food machinery, and in particular relates to a wear-resistant treatment method for a sliding bearing used in a centrifuge. Background technique [0002] With the rapid development of the economy and the improvement of people's quality of life, the pharmaceutical industry has also developed rapidly, which has promoted the progress of pharmaceutical machinery technology and promoted the upgrading of the pharmaceutical equipment industry. The mechanical equipment of the pharmaceutical industry is an important part of the chemical machinery field, and the centrifuge is an important mechanical equipment in the pharmaceutical machinery. The working condition of the centrifuge has an important direct impact on the quality of the drug, especially the sliding bearings used in the centrifuge. The working quality and life of the centrifuge have a great impact. The existing centrifuge runs for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/08C22F1/02C23C8/30
CPCC22F1/02C22F1/08C23C8/30
Inventor 金波
Owner 蚌埠精工制药机械有限公司
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