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Preparation method of alloy co-penetration Dacromet and closing layer composite coating

A composite coating and sealing layer technology, used in metal material coating process, coating, anti-corrosion coating and other directions, can solve the problems of insufficient surface hardness, chromium pollution, etc., and achieve high work efficiency, uniform thickness, and dense metallographic structure. Effect

Active Publication Date: 2016-10-26
HEBEI CHENYANG INDAL & TRADE GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Dacromet, also known as Dacromet rust, high-gram rust, zinc-chromium film, etc., refers to coating the metal substrate with a liquid treatment solution containing zinc flakes, aluminum flakes, chromic anhydride, ethylene glycol, etc. After baking, a layer of non-decorative coating film with excellent corrosion resistance is formed on the surface of the metal substrate. The disadvantage is that the surface hardness is insufficient
In addition, since chromium plays a key role in Dacromet coating metal anti-corrosion technology, chromium exists every moment in the processing and application of Dacromet, from raw material storage and transportation to slurry preparation, Dacromet There is a possibility of chromium pollution in the coating and curing, and finally to use

Method used

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Examples

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Effect test

specific Embodiment 1

[0036] The preparation method of alloy co-infiltration, Dacromet and sealing layer composite coating provided by the present embodiment comprises the following steps:

[0037] Step 1. Weigh the following co-penetrating agent raw materials in parts by mass: 100 parts of zinc powder, 15 parts of aluminum powder, 85 parts of aluminum oxide powder, 20 parts of nickel powder, 3 parts of cerium oxide powder, 0.6 part of ammonium chloride, The particle diameter of above-mentioned raw material is 300 orders;

[0038] Step 2. Mix the zinc powder, aluminum powder, alumina powder, nickel powder and cerium oxide powder weighed in step 1 evenly, heat to 150-200°C, keep warm for 30-50 minutes, cool to room temperature and then mix with After the ammonium chloride is mixed evenly, the co-penetration agent is prepared;

[0039] Step 3: Stack the plate-shaped metal parts with clean surface treatment into stacks with similar height and width, and lay a layer of infiltration agent prepared in s...

specific Embodiment 2

[0053] The preparation method of alloy co-infiltration, dacromet and sealing layer composite coating provided by this embodiment, the specific steps are the same as in specific embodiment 1, and different from specific embodiment 1 are:

[0054] In step 1, the co-infiltration agent raw materials are: 100 parts of zinc powder, 10 parts of aluminum powder, 100 parts of alumina powder, 30 parts of nickel powder, 5 parts of cerium oxide powder, and 0.8 part of ammonium chloride;

[0055] In step five, Dacromet antiseptic raw materials are:

[0056] Component A: 10 parts of zinc flakes and aluminum flakes, wherein the ratio of zinc flakes and aluminum flakes is 2:1; 55 parts of deionized water, 2.0 parts of fatty alcohol polyoxyethylene ether;

[0057] Component B: 10 parts of amorphous compound molybdate compound, 15 parts of barium salt, 0.6 part of hydrogen peroxide, and 1 part of polyethylene glycol;

[0058] In step six, after mixing and stirring the components A and B weighe...

specific Embodiment 3

[0062] The preparation method of alloy co-infiltration, dacromet and sealing layer composite coating provided by this embodiment, the specific steps are the same as in specific embodiment 1, and different from specific embodiment 1 are:

[0063] In step 1, the co-penetrating agent raw materials are: 100 parts of zinc powder, 20 parts of aluminum powder, 80 parts of alumina powder, 10 parts of nickel powder, 2 parts of cerium oxide powder, and 0.5 part of ammonium chloride;

[0064] In step five, Dacromet antiseptic raw materials are:

[0065] Component A: 10 parts of zinc flakes and aluminum flakes, wherein the ratio of zinc flakes and aluminum flakes is 2:3; 60 parts of deionized water, 0.5 parts of fatty alcohol polyoxyethylene ether;

[0066] Component B: 10 parts of amorphous compound molybdate compound, 5 parts of barium salt, 0.8 part of hydrogen peroxide, and 3 parts of polyethylene glycol;

[0067] In step six, after mixing and stirring the components A and B weighed ...

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Abstract

The invention discloses a preparation method of an alloy co-penetration Dacromet and closing layer composite coating. The method includes the following steps of weighing a co-penetration agent raw material to be evenly mixed to prepare a co-penetration agent, stacking platy metal sheets with cleaned surfaces to form a stack with high and width approximately the same, laying a layer of co-penetration agent between every two adjacent platy metal sheets, packing the metal sheets into bundles, putting the bundles in a co-penetration furnace, weighing a Dacromet anticorrosion raw material to be evenly mixed and stirred, adjusting pH, putting the platy metal sheets in a coating solution soaking cage, making the platy metal sheets soaked in a Dacromet anticorrosion coating solution, conducting rotary draining, sending the platy metal sheets into an online drying device to be baked, cooling the platy metal sheets to the room temperature, preparing a normal temperature curing agent from tetraethylenepentamine and cashew phenol glycidyl ether, preparing a front pre-mix component and a curing reaction component to be evenly mixed to prepare a closing solution, spraying the closing solution onto the rotating platy metal sheets, making the platy metal sheets enter a tunnel oven to be dried, and then putting the platy metal sheets in the normal temperature for 2-4 h.

Description

technical field [0001] The invention relates to the technical field of composite anticorrosion on the surface of metal parts, in particular to a method for preparing a composite coating of alloy co-infiltration, dacromet and sealing layer. Background technique [0002] Every year, the world's steel corrosion loss accounts for more than 10% of the total steel output, and the economic loss caused by corrosion in industrially developed countries accounts for more than 2% to 4% of the total output value of the national economy; research and develop advanced anti-corrosion technology to reduce economic losses caused by corrosion Prolonging the service life of steel and other metal materials and equipment is of great significance to promoting the development of advanced technology, cutting-edge science and defense industry, as well as the sustainable and coordinated development of the national economy and social environment. [0003] Multi-element alloy co-infiltration is a new ty...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D5/10C09D163/00C23C10/30
CPCC09D1/00C09D5/103C09D5/106C09D163/00C23C10/30
Inventor 晋华明
Owner HEBEI CHENYANG INDAL & TRADE GROUP CO LTD
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