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Method for preparing metal ceramic coating material with plasma/combustion synthesis/quasistatic pressing process

A metal-ceramic coating, self-propagating high temperature technology, applied in coating, metal material coating process, fusion spraying and other directions, can solve the problems of short service life, poor bonding strength, low fatigue strength, etc. Cost, meeting the requirements of use, and the effect of high production efficiency

Inactive Publication Date: 2011-11-16
QIQIHAR UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a kind of method that plasma / self-propagating high-temperature synthesis / quasi-hot isostatic pressing technique prepares cermet coating material, and the present invention solves the existing problem that existing technique prepares ceramic coating on metal surface: as : Low fatigue strength, poor bonding strength, short service life, etc.

Method used

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  • Method for preparing metal ceramic coating material with plasma/combustion synthesis/quasistatic pressing process
  • Method for preparing metal ceramic coating material with plasma/combustion synthesis/quasistatic pressing process
  • Method for preparing metal ceramic coating material with plasma/combustion synthesis/quasistatic pressing process

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specific Embodiment approach 1

[0012] Specific embodiment one: the method for preparing the cermet coating material by plasma / self-propagating high-temperature synthesis / quasi-hot isostatic pressing process in this embodiment is carried out according to the following steps: 1. Weigh 48 ~64 parts of titanium powder, 20~40 parts of iron powder and 12~16 parts of carbon powder are mixed to obtain a mixture; 2. Put the mixture described in step 1 into a ball mill tank, and adopt the method of dry mixing or wet mixing Mix and dry to obtain a mixed powder; 3. Put the mixed powder obtained in step 2 into a stainless steel mold, and press it into a preform with a relative density of 50% to 60% (volume); 4. Put the metal substrate in acetone Ultrasonic cleaning, then sandblasting and roughening with 16-40 mesh brown corundum, and then plasma spraying NiCrBSi on the surface of the metal substrate, wherein the metal substrate is a steel plate; 5. Put the preform obtained in step 4 on the sprayed NiCrBSi metal substrate...

specific Embodiment approach 2

[0014] Embodiment 2: The difference between this embodiment and Embodiment 1 is that in step 1, 64 parts of titanium powder, 20 parts of iron powder and 16 parts of carbon powder are weighed in the first step. Other steps and parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0015] Embodiment 3: The difference between this embodiment and Embodiment 1 is that in step 1, 56 parts of titanium powder, 30 parts of iron powder and 14 parts of carbon powder are respectively weighed according to the ratio of parts by weight. Other steps and parameters are the same as in the first embodiment.

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Abstract

The present invention relates to a method for preparing a metal ceramic coating material with a plasma / self-propagation high temperature synthesis / pseudo hot isostatic pressing process, relating to a method for preparing a metal-matrix ceramic coating. The invention solves the problems of low fatigue resistance, poor bonding strength, short service life and the like existing in ceramic coating prepared on the surface of metal in the prior art. The method comprises the following steps of: dry or wet mixing titanium powder, iron powder and carbon powder and pressing a preset blank; carrying out ultrasonic cleaning on a metal substrate, carrying out sand blasting and coarsening and spraying NiCrBSi with plasma; and obtaining the metal ceramic coating material with a self-propagating high-temperature synthesis combined quasi-thermal isostatic pressing method. The method has easy operation and low cost; the obtained coating and substrate achieve metallurgical bonding, has high fatigue resistance, large thickness of the coat and low porosity, improves the wear resistance of the metal surface, can be widely applied to surface treatment and remanufacture of structural steel products, tool steel products, mould steel products and the like, and prolongs the service life of the products.

Description

technical field [0001] The invention relates to a method for preparing a metal-based ceramic coating. Background technique [0002] With the continuous improvement of industrial production technology, all kinds of mechanical equipment are developing in the direction of large-scale, high efficiency and high parameters. Due to the influence and erosion of various natural or unnatural factors, mechanical damage such as wear, fracture or corrosion will inevitably occur during the operation of the equipment, and maintenance is inevitable, and traditional maintenance is nothing more than scrapping and updating, although simple But it is not the best solution. Not only will a lot of money be wasted, but for parts that are difficult to buy in time, it will also prolong the maintenance cycle and even affect production. [0003] At present, there are more than 2 million traditional old machine tools that have been in service for more than 10 years in the country, 80% of the construct...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F7/04B22F3/02B22F3/23C23C4/06C23C4/12C23C4/134
Inventor 赵红麒麟王维李永胡海龙
Owner QIQIHAR UNIVERSITY
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