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Penetrant agent slurry and chromizing coating and preparation method and application thereof and a component with chromizing coating

A technology of infiltrating agent and slurry, applied in the field of metal infiltration, can solve the problems of inability to apply civilian products, complicated preparation process, limited use, etc., and achieves the effect of short time required, simple preparation process, and easy to fall off.

Inactive Publication Date: 2019-01-22
沈阳梅特科航空科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation process is complicated, the process takes a long time, the cost is high, the use is limited, it cannot be applied to civilian products, and the high temperature will cause great damage to the substrate.

Method used

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  • Penetrant agent slurry and chromizing coating and preparation method and application thereof and a component with chromizing coating
  • Penetrant agent slurry and chromizing coating and preparation method and application thereof and a component with chromizing coating
  • Penetrant agent slurry and chromizing coating and preparation method and application thereof and a component with chromizing coating

Examples

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preparation example Construction

[0031] The second aspect of the present invention provides a method for preparing the above penetrating agent slurry, the preparation method comprising: mixing and grinding chromium powder, ammonium chloride and kaolin powder evenly to obtain a metal powder penetrating agent; mixing polyvinyl alcohol, white latex , sodium stearate and talcum powder are uniformly mixed to obtain an adhesive; the metal powder infiltrant and the adhesive are mixed uniformly to obtain an infiltrant slurry.

[0032] The third aspect of the present invention provides a Cr-hardened coating, which includes Cr element formed by Cr element and C element in the carbon steel matrix. 23 C 6 , based on the total weight of the Cr-infiltrated coating, wherein the content of Cr element is 30-80wt%, the content of C element is 0.2-3.0wt%, and the coating thickness of the Cr-infiltrated coating is 5-80μm.

[0033] In the present invention, the Cr infiltrated coating does not participate in the formation of Cr ...

Embodiment 1

[0048] This embodiment provides a kind of penetration agent slurry, which includes: metal powder penetration agent and binder; based on the total weight of the metal powder penetration agent, the metal powder penetration agent includes: chromium powder 20wt %, ammonium chloride 4wt%, and the rest are kaolin powder; based on the total weight of the binder, the binder includes: polyvinyl alcohol 30wt%, white latex 15wt%, sodium stearate 15wt%, the rest It is talcum powder; the weight ratio of the metal powder penetration agent and the binding agent is 4:1.

[0049] The specific preparation method is as follows: mix and grind chromium powder, ammonium chloride and kaolin powder evenly to obtain a metal powder penetration agent; mix and stir polyvinyl alcohol, white latex, sodium stearate and talcum powder to obtain an adhesive; The metal powder infiltrating agent and the binder are put into a beaker, stirred with a glass rod to make them fully mixed evenly, and then the infiltrat...

Embodiment 2

[0053] This embodiment provides a kind of penetration agent slurry, which includes: metal powder penetration agent and binder; based on the total weight of the metal powder penetration agent, the metal powder penetration agent includes: chromium powder 10wt %, ammonium chloride 3wt%, and the rest are kaolin powder; based on the total weight of the binder, the binder includes: polyvinyl alcohol 40wt%, white latex 20wt%, sodium stearate 10wt%, the rest It is talcum powder; the weight ratio of the metal powder penetration agent and the binding agent is 2:1.

[0054] The specific preparation method is as follows: mix and grind chromium powder, ammonium chloride and kaolin powder evenly to obtain a metal powder penetration agent; mix and stir polyvinyl alcohol, white latex, sodium stearate and talcum powder to obtain an adhesive; The metal powder infiltrating agent and the binder are put into a beaker, stirred with a glass rod to make them fully mixed evenly, and then the infiltrat...

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Abstract

The invention discloses penetrant agent slurry and a chromizing coating, a preparation method and application thereof and a component with the chromizing coating. The penetrant agent slurry comprises:a metal powder penetrant agent and a binder. The metal powder penetrant agent comprises: 10-40 wt% of chromium powder, 3-5 wt% of ammonium chloride, and the balance kaolin powder; and the binder comprises: 20-40 wt% of polyvinyl alcohol, 10-20 wt% of white latex, 10-20 wt% of sodium stearate, and the balance talcum powder. The chromizing coating on the surface of the component is a combination ofmetal elements, which can ensure that the coating is tightly bonded to a substrate and is not easy to fall off. And then, the problem that existing chrome-plated protective chrome layer is easy to fall off is solved. The preparation process of the chromizing coating is simple and easy to operate. Time consumption is low; costs of raw materials are low; and the product has a wide range of application and can be used for production of civilian products.

Description

technical field [0001] The invention belongs to the technical field of metal infiltration, and more specifically relates to an infiltration agent slurry, a Cr infiltration coating, a preparation method and application thereof, and parts with a Cr infiltration coating. Background technique [0002] The water pump impeller and other parts are made of medium carbon steel, which is easy to be worn out during work and cause the parts to fail. Therefore, it is necessary to protect all or part of the friction surface by chromizing to increase the surface hardness, thereby improving the abrasive wear resistance of the material and prolonging its service life and reliability. By using an electronic microhardness tester to detect the hardness of the chromized layer on the chromized surface, the hardness value of the chromized layer after chromizing the part is much higher than the hardness value of the substrate surface, so the surface hardness of the part surface is significantly imp...

Claims

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Application Information

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IPC IPC(8): C23C10/42
CPCC23C10/42
Inventor 樊海亮王枢雨吴强
Owner 沈阳梅特科航空科技有限公司