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A kind of rapid powder zinc sherardizing agent and its application method

A powder zinc sherardizing and fast technology, which is applied in the direction of metal material coating process, coating, solid diffusion coating, etc., can solve the problems of long time of zinc shedding, agglomeration, inconvenient recycling and reuse, etc., and achieve control of thickness and surface The effect of smoothness, good coverage, and shortening the time of powder sherardizing

Inactive Publication Date: 2017-12-15
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the existing powder zinc-seeding agent and its application process require a long time for zinc-seeding; the corrosion resistance of the zinc-iron alloy layer can be further improved; the surface of steel parts is bonded with zinc-seeding agent and needs to be cleaned; Zinc agglomeration, not easy to recycle

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1: A rapid powder zinc sherardizing agent, made of the following raw materials in parts by weight: 75 parts of zinc powder, 3 parts of sepiolite powder, 3 parts of rare earth cerium oxide, 6 parts of ammonium chloride, and 3 parts of aluminum powder , 10 parts of alumina, each raw material is evenly stirred and mixed together.

[0028] The zinc powder contains more than 99.9% zinc and has a particle diameter of 40-60nm; the sepiolite powder contains more than 98% sepiolite and has a particle diameter of 10-25µm; the rare earth cerium oxide contains more than 95% cerium oxide, The particle diameter is 40-60nm; the ammonium chloride contains more than 98% ammonium chloride and the particle diameter is 5-20µm; the aluminum powder contains more than 95% aluminum and the particle diameter is 1-5µm; the alumina contains More than 99% aluminum, particle diameter 60~90nm.

[0029] The using method of above-mentioned fast powder zinc sherardizing agent, its concrete ste...

Embodiment 2

[0034] Example 2: A rapid powder zinc sherardizing agent made of the following raw materials in parts by weight: 66 parts of zinc powder, 3 parts of sepiolite powder, 3.5 parts of rare earth cerium oxide, 4.5 parts of ammonium chloride, and 3 parts of aluminum powder , 20 parts of aluminum oxide, all raw materials are evenly stirred and mixed together.

[0035] The zinc powder contains more than 99.9% zinc and has a particle diameter of 40-60nm; the sepiolite powder contains more than 98% sepiolite and has a particle diameter of 10-25µm; the rare earth cerium oxide contains more than 95% cerium oxide, The particle diameter is 40-60nm; the ammonium chloride contains more than 98% ammonium chloride and the particle diameter is 5-20µm; the aluminum powder contains more than 95% aluminum and the particle diameter is 1-5µm; the alumina contains More than 99% aluminum, particle diameter 60~90nm.

[0036] The using method of above-mentioned fast powder zinc sherardizing agent, its c...

Embodiment 3

[0041] Example 3: A rapid powder zinc sherardizing agent, made of the following raw materials in parts by weight: 58 parts of zinc powder, 3 parts of sepiolite powder, 3 parts of rare earth cerium oxide, 4 parts of ammonium chloride, and 3 parts of aluminum powder , 29 parts of aluminum oxide, each raw material is evenly stirred and mixed together.

[0042] The zinc powder contains more than 99.9% zinc and has a particle diameter of 40-60nm; the sepiolite powder contains more than 98% sepiolite and has a particle diameter of 10-25µm; the rare earth cerium oxide contains more than 95% cerium oxide, The particle diameter is 40-60nm; the ammonium chloride contains more than 98% ammonium chloride and the particle diameter is 5-20µm; the aluminum powder contains more than 95% aluminum and the particle diameter is 1-5µm; the alumina contains More than 99% aluminum, particle diameter 60~90nm.

[0043] The using method of above-mentioned fast powder zinc sherardizing agent, its concr...

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Abstract

The invention discloses a quick powder sheradizing agent. The quick powder sheradizing agent comprises raw materials in parts by weight as follows: 55-85 parts of zinc powder, 0.5-5 parts of sepiolite powder, 0.2-5 parts of rare earth cerium oxide, 0.5-10 parts of ammonium chloride, 1-10 parts of aluminum powder and 10-45 parts of aluminum oxide; all the raw materials are evenly stirred and mixed in parts by weight. A use method of the quick powder sheradizing agent comprises steps as follows: the powder sheradizing agent and a to-be-sheradized steel part are fed into a ceramic lining drum of a drum type heating furnace, and the furnace is covered and sealed; the rotating speed of the drum type heating furnace is controlled to increase from 1 r / min to 60 r / min and then decrease to 1 r / min, and the process is repeated; the drum type heating furnace is heated to 390-410 DEG C and kept at the temperature for 20-200 min, slowly cooled to the room temperature and stopped, and the steel part is taken out. The quick powder sheradizing agent is high in sheradizing speed, not sticky and high in corrosion resistance.

Description

technical field [0001] The invention relates to a rapid powder zinc sherardizing agent and a method for using the same, belonging to the technical field of surface protection of iron and steel parts, in particular to the chemical heat treatment industry for forming a zinc-iron alloy protective layer on the surface of iron and steel parts. Background technique [0002] Outdoor steel structures and fasteners, highway guardrails, bridges, plumbing appliances, construction hardware, automobiles, construction machinery and other steel parts, powder metallurgy products and steel parts used in chemical, marine, metallurgical, power generation and other projects, often A corrosion resistant protective layer is required. Zinc is the most commonly used chemical element in the surface protection of steel parts: the thickness of the hot-dip galvanized layer is generally 15-130µm, and the thickness of the coating on the plane and corner of the component is significantly different, the un...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C10/36
CPCC23C10/36
Inventor 刘群山
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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