CN106011740A - Preparing method for alloy co-diffusion and Dacromet composite antiseptic coating - Google Patents
Preparing method for alloy co-diffusion and Dacromet composite antiseptic coating Download PDFInfo
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- CN106011740A CN106011740A CN201610371651.0A CN201610371651A CN106011740A CN 106011740 A CN106011740 A CN 106011740A CN 201610371651 A CN201610371651 A CN 201610371651A CN 106011740 A CN106011740 A CN 106011740A
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
- C23C10/30—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes using a layer of powder or paste on the surface
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
- C09D5/10—Anti-corrosive paints containing metal dust
- C09D5/103—Anti-corrosive paints containing metal dust containing Al
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
- C09D5/10—Anti-corrosive paints containing metal dust
- C09D5/106—Anti-corrosive paints containing metal dust containing Zn
Abstract
The invention discloses a preparing method for an alloy co-diffusion and Dacromet composite antiseptic coating. The preparing method comprises the following steps that by mass, following co-diffusion agent raw materials are weighed; the weighed raw materials are evenly mixed, and then a co-diffusion agent is prepared; platy metal pieces with the surfaces cleaned thoroughly are stacked into a stack with the height similar to the width, a layer of co-diffusion agent is laid between every two adjacent platy metal pieces, and packaging and bundling are conducted; the packaged and bundled platy metal pieces are placed in a co-diffusion furnace to be heated and subjected to co-diffusion treatment for 2 h-3 h; Dacromet antiseptic raw materials are weighed, mixed and stirred evenly, pH is adjusted, and Dacromet antiseptic coating liquid is prepared; and the platy metal pieces obtained after alloy co-diffusion treatment are placed in a coating liquid immersing cage, then the coating liquid immersing cage is immersed in the Dacromet antiseptic coating liquid and then drained off to be sent into an online drying device, and baking is conducted for 1.5 h-2.5 h at the temperature of 300 DEG C-350 DEG C. The preparing method is suitable for treating the platy metal pieces in batches.
Description
Technical field
The present invention relates to a kind of metalwork composite anti-corrosive processing technology field, particularly a kind of alloy blends Dacroment composite anti-corrosive coating production altogether.
Background technology
Annual world steel corrosion loss accounts for more than the 10% of steel total output, and the economic loss that industrially developed country's corrosion causes accounts for the 2%～more than 4% of total value of production in national economy；The anticorrosion technique that research and development are advanced, to reduce economic loss, prolongation iron and steel and other metal materials and the service life of equipment that corrosion causes, the sustainable and harmonious development promoting advanced technology, the most advanced branches of science and the development of national defense industry and national economy and social environment had particularly important meaning.
Multi-component alloy co-cementation is novel anti-corrosion of metal technology, and it is mainly by carrying out the physical-chemical reaction of complexity under vacuum, and then forms a corrosion protective layer in uniform thickness, that case hardness is high in metal surface；Multi-component alloy co-cementation is not enough for the resistance to corrosion of salt fog gas.
Dacroment is also called and reaches a gram rust, high gram rust, Zinc-Chromium film etc., refer to coat metallic matrix with the liquid treatment fluid containing compositions such as zinc metal sheet, aluminium flake, chromic anhydride, ethylene glycol, after high-temperature baking, forming one layer at metal base surface and have splendid corrosion proof non-decoration film, its deficiency existed is that case hardness is not enough.In addition, owing to chromium plays pivotal role in Dacromet/steel anti-corrosion of metal technology, its content in serosity is at every liter more than 20～26 milligrams, the solidification process of Dacromet/steel is exactly that sexavalence chromic acid is at high temperature by the process of the Organic substance reduction such as ethylene glycol, thus generating trivalent chromium water-fast, unbodied as bonding agent, the lamination zinc metal sheet of tens of with metal surface layers combines and forms the Dacroment zinc-chromium coating of finer and close 5～12 microns；Therefore chromium the most all exists in the processing and application of Dacroment, and the system from raw material accumulating to serosity is joined, and to coating and the solidification of Dacroment, finally arrives use, all there is the possibility of pollution of chromium.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of alloy and blend Dacroment composite anti-corrosive coating production altogether.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of alloy blends Dacroment composite anti-corrosive coating production altogether, comprises the following steps:
Step one, weigh the diffusion medium raw material of following mass fraction: zinc powder 100 parts, aluminium powder 10～20 parts, alumina powder 80～100 parts, nikel powder 10～30 parts, cerium sesquioxide powder 2～5 parts, ammonium chloride 0.5～0.8 part, the particle diameter of above-mentioned raw materials is 300 mesh；
Step 2, by the zinc powder, aluminium powder, alumina powder, nikel powder and the cerium sesquioxide powder mix homogeneously post-heating that weigh in step one to 150～200 DEG C, be cooled to after then room temperature mixs homogeneously with ammonium chloride prepared diffusion medium after be incubated 30 minutes～50 minutes；
Step 3, surface is processed clean plate-shaped piece of metal it is laminated into the stacking that height and the width are close, and between adjacent plate-shaped piece of metal, lay the diffusion medium that one layer of step 2 prepares, then threaded U-shaped bar is set by two ends and the bridge built-in fitting sheet material being laminated into stacking is packed bundled；
Step 4, bundled plate-shaped piece of metal of step 3 being packed are put into and are oozed in stove altogether, and to oozing altogether, stove adds the diffusion medium that step 2 prepares, then pass through to ooze stove altogether and be heated to 400～500 DEG C, under the pressure of 0.10～0.20 MPa, infiltration processes 2～3 hours altogether, prepares alloy and oozes overcoat altogether；
Step 5, weigh the Dacroment anticorrosion raw material of following mass fraction:
Component A: zinc metal sheet and aluminium flake 10 parts, wherein the ratio of zinc metal sheet and aluminium flake is 2 (1～3), deionized water 50～60 parts, fatty alcohol-polyoxyethylene ether 0.5～2.0 parts；
B component: unformed compound molybdate compound 10 parts, barium hydrochlorate 5～15 parts, hydrogen peroxidase 10 .5～0.8 part, Polyethylene Glycol 1～3 parts；
Step 6, the component A weighed in step 5 and B component are mixed and stirred for uniformly according to the mass ratio of 1 (15～25) after, be 3.5～5.0 by pH adjusting agent by mixture pH regulator, prepare Dacroment anticorrosion masking liquid；
Step 7, by step 4 process after plate-shaped piece of metal be placed in masking liquid dipping cage in, then masking liquid impregnates cage be immersed in Dacroment anticorrosion masking liquid prepared by step 6, rotating applicator dipping cage makes the plate-shaped piece of metal in masking liquid dipping cage be fully contacted with Dacroment anticorrosion masking liquid, then masking liquid impregnates cage and is promoted to the ullage of Dacroment anticorrosion masking liquid and is drained by rotation；
Step 8, step 7 is processed after masking liquid dipping cage send in online drying plant, toast 1.5～2.5 hours at a temperature of 300～350 DEG C, then take out masking liquid dipping cage, the plate-shaped piece of metal impregnated in cage by masking liquid after being cooled to room temperature is poured out.
Further preferred as technique scheme, in step one, diffusion medium raw material is: zinc powder 100 parts, aluminium powder 15 parts, alumina powder 85 parts, nikel powder 20 parts, 3 parts of cerium sesquioxide powder, ammonium chloride 0.6 part；
In step 5, Dacroment anticorrosion raw material is:
Component A: zinc metal sheet and aluminium flake 10 parts, wherein the ratio of zinc metal sheet and aluminium flake is 11, deionized water 50 parts, fatty alcohol-polyoxyethylene ether 1.1 parts；
B component: unformed compound molybdate compound 10 parts, barium hydrochlorate 8 parts, hydrogen peroxidase 10 .5 part, Polyethylene Glycol 2 parts；
In step 6, after the component A weighed in step 5 and B component are mixed and stirred for uniformly according to the mass ratio of 1 18, it is 4.0～4.5 by pH adjusting agent by mixture pH regulator.
Compared with prior art, the invention has the beneficial effects as follows:
A kind of alloy provided by the present invention blends Dacroment composite anti-corrosive coating production altogether, alloy blends Dacromet/steel Application of composite altogether and not only ensure that good antiseptic property but also have higher case hardness.In addition; use zinc-aluminium nickel alloy co-penetration technology; process the multi-component alloy co-cementation corrosion protective covering that formed of metal surface and there is the advantage that thickness is uniform, metallographic structure is fine and close, with the zincizing aluminum ratio of same thickness relatively, high temp. salt fog body is had to the resistance to corrosion of excellence.
Again, the present invention preferred chromium-free Dyclo anticorrosion masking liquid, its principle is: unformed compound molybdate compound (MoO3•nMo2O3) coating that is bound to each other to form as binding agent and tens of layers about 0.2 micron of thickness, the flake zinc of 10 microns of sizes, aluminum；Workpiece have passed through oil removing, processing of rust removing, will form the inorganic coating being made up of components such as zinc, aluminum, molybdenum, barium again after about 300 DEG C high-temperature bakings；During solidification, moisture content in coating, organic component etc., while volatilization, rely on high price molybdenum, the oxidisability of barium hydrochlorate in Dacroment masking liquid, zinc, aluminum and iron-based body carry out passive state protection simultaneously, form ferrum, aluminum, the molybdate compound of zinc；Owing to coating obtains with matrix direct reaction, therefore corrosion-resistant coating is the finest and close；Coating can form numerous galvanic element under corrosive environment, the most first erodes zinc metal sheet and aluminium flake that current potential is relatively born, its is possible to corrosion to matrix itself.
Additionally, a kind of alloy of the present invention blends Dacroment composite anti-corrosive coating production altogether is applicable to process in bulk plate-shaped piece of metal, work efficiency is high, labor intensity is low, and plate-shaped piece of metal can be fully contacted with antiseptic treating agent, coating uniform.
Detailed description of the invention
Further describe the technology contents of the present invention below in conjunction with specific embodiments.
Specific embodiment 1
A kind of alloy that the present embodiment is provided blends Dacroment composite anti-corrosive coating production altogether, comprises the following steps:
Step one, weigh the diffusion medium raw material of following mass fraction: zinc powder 100 parts, aluminium powder 15 parts, alumina powder 85 parts, nikel powder 20 parts, 3 parts of cerium sesquioxide powder, ammonium chloride 0.6 part, the particle diameter of above-mentioned raw materials is 300 mesh；
Step 2, by the zinc powder, aluminium powder, alumina powder, nikel powder and the cerium sesquioxide powder mix homogeneously post-heating that weigh in step one to 150～200 DEG C, be cooled to after then room temperature mixs homogeneously with ammonium chloride prepared diffusion medium after be incubated 30 minutes～50 minutes；
Step 3, surface is processed clean plate-shaped piece of metal it is laminated into the stacking that height and the width are close, and between adjacent plate-shaped piece of metal, lay the diffusion medium that one layer of step 2 prepares, then threaded U-shaped bar is set by two ends and the bridge built-in fitting sheet material being laminated into stacking is packed bundled；
Step 4, bundled plate-shaped piece of metal of step 3 being packed are put into and are oozed in stove altogether, and to oozing altogether, stove adds the diffusion medium that step 2 prepares, then pass through to ooze stove altogether and be heated to 400～500 DEG C, under the pressure of 0.10～0.20 MPa, infiltration processes 2～3 hours altogether, prepares alloy and oozes overcoat altogether；
Step 5, weigh the Dacroment anticorrosion raw material of following mass fraction:
Component A: zinc metal sheet and aluminium flake 10 parts, wherein the ratio of zinc metal sheet and aluminium flake is 11, deionized water 50 parts, fatty alcohol-polyoxyethylene ether 1.1 parts；
B component: unformed compound molybdate compound 10 parts, barium hydrochlorate 8 parts, hydrogen peroxidase 10 .5 part, Polyethylene Glycol 2 parts；
Step 6, the component A weighed in step 5 and B component are mixed and stirred for uniformly according to the mass ratio of 1 18 after, be 4.0～4.5 by pH adjusting agent by mixture pH regulator, prepare Dacroment anticorrosion masking liquid；PH adjusting agent is one or more in zinc oxide, aluminium oxide, Barium monoxide, aluminium hydroxide and barium hydroxide；
Step 7, by step 4 process after plate-shaped piece of metal be placed in masking liquid dipping cage in, then masking liquid impregnates cage be immersed in Dacroment anticorrosion masking liquid prepared by step 6, rotating applicator dipping cage makes the plate-shaped piece of metal in masking liquid dipping cage be fully contacted with Dacroment anticorrosion masking liquid, then masking liquid impregnates cage and is promoted to the ullage of Dacroment anticorrosion masking liquid and is drained by rotation；
Step 8, step 7 is processed after masking liquid dipping cage send in online drying plant, toast 1.5～2.5 hours at a temperature of 300～350 DEG C, then take out masking liquid dipping cage, the plate-shaped piece of metal impregnated in cage by masking liquid after being cooled to room temperature is poured out.
Plate-shaped piece of metal through above-mentioned process carries out room temperature neutral salt spray corrosion test in salt fog cabinet, and result is rust staining do not occur in 1000 hours, and the Vickers hardness number of combined anti-corrosion layer is more than 200HV.
Specific embodiment 2
A kind of alloy that the present embodiment is provided blends Dacroment composite anti-corrosive coating production altogether, and concrete steps are identical with specific embodiment 1, unlike specific embodiment 1:
In step one, diffusion medium raw material is: zinc powder 100 parts, aluminium powder 10 parts, alumina powder 100 parts, nikel powder 30 parts, 5 parts of cerium sesquioxide powder, ammonium chloride 0.8 part；
In step 5, Dacroment anticorrosion raw material is:
Component A: zinc metal sheet and aluminium flake 10 parts, wherein the ratio of zinc metal sheet and aluminium flake is 21；Deionized water 55 parts, fatty alcohol-polyoxyethylene ether 2.0 parts；
B component: unformed compound molybdate compound 10 parts, barium hydrochlorate 15 parts, hydrogen peroxidase 10 .6 part, Polyethylene Glycol 1 part；
In step 6, after the component A weighed in step 5 and B component are mixed and stirred for uniformly according to the mass ratio of 1 15, it is 3.5～4.0 by pH adjusting agent by mixture pH regulator.
Plate-shaped piece of metal through above-mentioned process carries out room temperature neutral salt spray corrosion test in salt fog cabinet, and result is rust staining do not occur in 600 hours, and the Vickers hardness number of combined anti-corrosion layer is 150HV～200HV.
Specific embodiment 3
A kind of alloy that the present embodiment is provided blends Dacroment composite anti-corrosive coating production altogether, and concrete steps are identical with specific embodiment 1, unlike specific embodiment 1:
In step one, diffusion medium raw material is: zinc powder 100 parts, aluminium powder 20 parts, alumina powder 80 parts, nikel powder 10 parts, 2 parts of cerium sesquioxide powder, ammonium chloride 0.5 part；
In step 5, Dacroment anticorrosion raw material is:
Component A: zinc metal sheet and aluminium flake 10 parts, wherein the ratio of zinc metal sheet and aluminium flake is 23；Deionized water 60 parts, fatty alcohol-polyoxyethylene ether 0.5 part；
B component: unformed compound molybdate compound 10 parts, barium hydrochlorate 5 parts, hydrogen peroxidase 10 .8 part, Polyethylene Glycol 3 parts；
In step 6, after the component A weighed in step 5 and B component are mixed and stirred for uniformly according to the mass ratio of 1 25, it is 4.5～5.0 by pH adjusting agent by mixture pH regulator.
Plate-shaped piece of metal through above-mentioned process carries out room temperature neutral salt spray corrosion test in salt fog cabinet, and result is rust staining do not occur in 600 hours, and the Vickers hardness number of combined anti-corrosion layer is 150HV～200HV.
Preferably enforcement to the present invention is illustrated above; certainly; the present invention can be to use form different from the embodiment described above; those of ordinary skill in the art in the conversion of the equivalent made on the premise of spirit of the present invention or change accordingly, all should belong in protection scope of the present invention.
Claims (2)
1. an alloy blends Dacroment composite anti-corrosive coating production altogether, it is characterised in that: comprise the following steps:
Step one, weigh the diffusion medium raw material of following mass fraction: zinc powder 100 parts, aluminium powder 10～20 parts, alumina powder 80～100 parts, nikel powder 10～30 parts, cerium sesquioxide powder 2～5 parts, ammonium chloride 0.5～0.8 part, the particle diameter of above-mentioned raw materials is 300 mesh；
Step 2, by the zinc powder, aluminium powder, alumina powder, nikel powder and the cerium sesquioxide powder mix homogeneously post-heating that weigh in step one to 150～200 DEG C, be cooled to after then room temperature mixs homogeneously with ammonium chloride prepared diffusion medium after be incubated 30 minutes～50 minutes；
Step 3, surface is processed clean plate-shaped piece of metal it is laminated into the stacking that height and the width are close, and between adjacent plate-shaped piece of metal, lay the diffusion medium that one layer of step 2 prepares, then threaded U-shaped bar is set by two ends and the bridge built-in fitting sheet material being laminated into stacking is packed bundled；
Step 4, bundled plate-shaped piece of metal of step 3 being packed are put into and are oozed in stove altogether, and to oozing altogether, stove adds the diffusion medium that step 2 prepares, then pass through to ooze stove altogether and be heated to 400～500 DEG C, under the pressure of 0.10～0.20 MPa, infiltration processes 2～3 hours altogether, prepares alloy and oozes overcoat altogether；
Step 5, weigh the Dacroment anticorrosion raw material of following mass fraction:
Component A: zinc metal sheet and aluminium flake 10 parts, wherein the ratio of zinc metal sheet and aluminium flake is 2 (1～3), deionized water 50～60 parts, fatty alcohol-polyoxyethylene ether 0.5～2.0 parts；
B component: unformed compound molybdate compound 10 parts, barium hydrochlorate 5～15 parts, hydrogen peroxidase 10 .5～0.8 part, Polyethylene Glycol 1～3 parts；
Step 6, the component A weighed in step 5 and B component are mixed and stirred for uniformly according to the mass ratio of 1 (15～25) after, be 3.5～5.0 by pH adjusting agent by mixture pH regulator, prepare Dacroment anticorrosion masking liquid；
Step 7, by step 4 process after plate-shaped piece of metal be placed in masking liquid dipping cage in, then masking liquid impregnates cage be immersed in Dacroment anticorrosion masking liquid prepared by step 6, rotating applicator dipping cage makes the plate-shaped piece of metal in masking liquid dipping cage be fully contacted with Dacroment anticorrosion masking liquid, then masking liquid impregnates cage and is promoted to the ullage of Dacroment anticorrosion masking liquid and is drained by rotation；
Step 8, step 7 is processed after masking liquid dipping cage send in online drying plant, toast 1.5～2.5 hours at a temperature of 300～350 DEG C, then take out masking liquid dipping cage, the plate-shaped piece of metal impregnated in cage by masking liquid after being cooled to room temperature is poured out.
A kind of alloy the most according to claim 1 blends Dacroment composite anti-corrosive coating production altogether, it is characterised in that:
In step one, diffusion medium raw material is: zinc powder 100 parts, aluminium powder 15 parts, alumina powder 85 parts, nikel powder 20 parts, 3 parts of cerium sesquioxide powder, ammonium chloride 0.6 part；
In step 5, Dacroment anticorrosion raw material is:
Component A: zinc metal sheet and aluminium flake 10 parts, wherein the ratio of zinc metal sheet and aluminium flake is 11, deionized water 50 parts, fatty alcohol-polyoxyethylene ether 1.1 parts；
B component: unformed compound molybdate compound 10 parts, barium hydrochlorate 8 parts, hydrogen peroxidase 10 .5 part, Polyethylene Glycol 2 parts；
In step 6, after the component A weighed in step 5 and B component are mixed and stirred for uniformly according to the mass ratio of 1 18, it is 4.0～4.5 by pH adjusting agent by mixture pH regulator.
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| CN106567768A (en) * | 2016-11-14 | 2017-04-19 | 芜湖市元山机械制造有限公司 | High-durability silent exhaust pipe for heavy vehicle |
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