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A kind of solid powder multi-component composite penetration agent and composite penetration process

A technology of solid powder and multi-component compounding, applied in metal material coating process, solid-state diffusion coating, coating, etc., can solve the unavoidable problems of coarse FeB, slow penetration rate, etc., and achieve less residue on the surface of the workpiece and fast penetration rate , cost-saving effect

Active Publication Date: 2021-01-15
GUANGDONG INST OF NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this compound infiltration has improved the performance of the infiltration layer to a certain extent, there are still some problems in these compound infiltration, such as co-infiltration of boron chromium and boron vanadium. Although the structure of the infiltration layer has been improved to a certain extent, the formation of coarse FeB cannot be avoided. Exist; although the chrome-vanadium co-infiltration has compact structure and high performance, it still has the disadvantage of slow infiltration rate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] This embodiment provides a solid powder multi-component composite penetration agent and composite penetration process, including:

[0033] The formula of solid powder composite penetration agent is as follows: 10wt.% chromium powder, 40wt.% vanadium powder, 3wt.% boron powder, 6wt.% nickel powder, 2wt.% NH 4 F, 24wt.%Al 2 o 3 , 10wt.% Al powder, 5wt.% Y 2 o 3 pink.

[0034]Put the prepared powder above in a powder mixer and stir for 4 hours to mix evenly, then put the mixed powder into a drying oven to dry.

[0035] The workpiece material is bearing steel, which is cleaned and degreased with a degreasing agent, pickled, rinsed with water, and dried.

[0036] Put the dry compound penetrating agent into the seeping tank, and bury the workpiece in the compound penetrating agent powder.

[0037] Put the seepage tank into the atmosphere furnace to pump air to -0.1MPa (pressure gauge), flush with nitrogen, heat to 920°C, and keep it warm for 12 hours

[0038] After coo...

Embodiment 2

[0042] This embodiment provides a solid powder multi-component composite penetration agent and composite penetration process, including:

[0043] The formula of solid powder composite penetration agent is as follows: 20wt.% chromium powder, 30wt.% ferrovanadium powder, 4wt.% boron powder, 5wt.% nickel powder, 3wt.% NH 4 Cl, 24wt.% SiC, 8wt.% Al powder, 6wt.% CeO 2 pink;

[0044] Put the prepared powder above in a powder mixer and stir for 4 hours to mix evenly, then put the mixed powder into a drying oven to dry;

[0045] The workpiece material is bearing steel, which is cleaned and degreased with degreasing agent, pickled, rinsed with water, and dried;

[0046] Put the dry compound penetrating agent into the seeping tank, and bury the workpiece in the compound penetrating agent powder;

[0047] Put the seepage tank into the atmosphere furnace to pump air to -0.1MPa (pressure gauge), pour in acetylene, heat to 880°C, and keep it warm for 15 hours;

[0048] After cooling to...

Embodiment 3

[0052] This embodiment provides a solid powder multi-component composite penetration agent and composite penetration process, including:

[0053] The formula of solid powder composite penetration agent is as follows: 30wt.% chromium powder, 20wt.% ferrovanadium powder, 5wt.% boron powder, 4wt.% nickel powder, 4wt.% NH 4 Cl, 29wt.% Al 2 o 3 , 5wt.% Al powder, 3wt.% Y 2 o 3 pink;

[0054] Put the prepared powder above in a powder mixer and stir for 4 hours to mix evenly, then put the mixed powder into a drying oven to dry;

[0055] The workpiece material is bearing steel, which is cleaned and degreased with degreasing agent, pickled, rinsed with water, and dried;

[0056] Put the dry compound penetrating agent into the seeping tank, and bury the workpiece in the compound penetrating agent powder;

[0057] Put the seepage tank into the atmosphere furnace to pump air to -0.1MPa (pressure gauge), pour in methane, heat to 860°C, and keep it warm for 10 hours;

[0058] After c...

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Abstract

The invention relates to a solid powder multi-element composite infiltration agent and a composite infiltration process, and belongs to the technical field of metal surface treatment. The composite infiltration agent is composed of a chromium source, a vanadium source, a boron source, nickel powder, an activating agent, a filling agent, an oxygen scavenger and a rare-earth infiltration enhancer. The composite infiltration agent has the effects of rapid infiltration speed, no pollution, improving the structural density of an infiltration layer, and avoiding the embrittlement of the infiltrationlayer. The composite infiltration process comprises the following steps of carrying out acid pickling activation pretreatment on a base body material, then burying the base body material into the composite infiltration agent, heating and preserving heat in a carbon-containing or nitrogen-containing atmosphere, and then carrying out quenching treatment after furnace cooling. According to the process, the method is simple, no pollution occurs, the infiltration speed is rapid, the infiltration agent is free of hardening, and the surface of an infiltrated workpiece is clean. The prepared composite infiltration layer is fine in the crystalline grains and compact in the structure, has a good gradient structure, has the toughness, the wear resistance, the corrosion resistance, the high-temperature oxidation resistance and the like, and can be applied to parts such as a tool, a mold, a bearing, and a gear.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment, and in particular to a solid powder multi-component composite infiltration agent and a composite infiltration process. Background technique [0002] The solid infiltration process is simple, the process is short, and a uniform infiltration layer structure can be obtained for the surface of the workpiece with complex shapes. The infiltration layer prepared by the solid infiltration method has the advantages of wear resistance, corrosion resistance, and oxidation resistance. Therefore, the solid infiltration technology is widely used in the industry. is widely used. [0003] Commonly used solid infiltration mainly includes boronizing, chromizing, vanadiuming, etc., and they all have their own advantages and disadvantages. Poor, and the boronizing layer is prone to coarse FeB phase, resulting in high brittleness of the boronizing layer and easy peeling off. The surface oxidation re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C12/02
CPCC23C12/02
Inventor 韦春贝林松盛代明江唐相国侯惠君苏一凡郭朝乾石倩李洪
Owner GUANGDONG INST OF NEW MATERIALS
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