CN109590193A - A kind of technique of powder metallurgy product antirust Dacroment - Google Patents
A kind of technique of powder metallurgy product antirust Dacroment Download PDFInfo
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- CN109590193A CN109590193A CN201811386130.8A CN201811386130A CN109590193A CN 109590193 A CN109590193 A CN 109590193A CN 201811386130 A CN201811386130 A CN 201811386130A CN 109590193 A CN109590193 A CN 109590193A
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- Prior art keywords
- powder metallurgy
- metallurgy product
- dacroment
- technique
- product
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
- B05D3/0466—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases the gas being a non-reacting gas
- B05D3/0473—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases the gas being a non-reacting gas for heating, e.g. vapour heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/10—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by other chemical means
- B05D3/102—Pretreatment of metallic substrates
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
A kind of technique of powder metallurgy product antirust Dacroment, it is related to technical field of surface.It is comprised the following steps: Step 1: pretreatment；Step 2: processing of rust removing；Step 3: polishing treatment；Step 4: blasting treatment；Step 5: dipping Dacroment；Step 6: coating naturally；Step 7: air cooking；Step 8: cooling finished product.The invention has the following beneficial effects: simple process, use value is high, the rustless property and corrosion resistance of powder metallurgy product can be improved, in the identical situation of coating layer thickness, the corrosion resistant ability of Dacroment technique is 7-10 times of traditional zinc coat, colleague field comparison in function admirable and generalization it is strong.
Description
Technical field
The present invention relates to technical field of surface, and in particular to a kind of work of powder metallurgy product antirust Dacroment
Skill.
Background technique
Dacroment (DACROMETR), also known as Zinc-Chromium film, up to gram rust, Da Keman etc., the title in China is " zinc chrome
Coating " (Zinc/Chromate Coatings), is defined as: " by water base zinc chrome coating dip-coating, brush or be sprayed at steel zero
Part or component surface, the chromate with flake zinc and zinc of toasted formation inorganic anti-corrosion erosion resisting coating as the main component ".It reaches
Crow technology is invented by American, is a kind of metal coating treatment technology of similar electrogalvanizing, is to use to contain zinc metal sheet, aluminium
The paste treatment fluid of the ingredients such as piece, chromic anhybride, ethylene glycol coats metallic matrix, after high-temperature baking, in metal base surface shape
There is splendid corrosion proof non-decoration film at one layer, which has prevented the waste residue generated in electroplating process, sewage, exhaust gas
Emission pollution problem is the New painting technology that replacing electroplating zinc, hot galvanizing etc. carry out surface anticorrosion.Dacromet/steel has excellent
Performance, such as extremely strong corrosion resistance, than electrogalvanizing improve 7~10 times；Anaerobic is crisp, especially suitable for high-intensitive stressed member, such as
High-strength bolt for subway engineering；High-fire resistance, 300 DEG C of heat resisting temperature.In addition, also have high osmosis, high adhesion,
The advantages that high antifriction quality, high weather resistance, high resistance to chemicals product stability and non-environmental-pollution.Common Dacroment coating processing mistake
Journey is substantially are as follows: degreasing degreasing, ball blast derust, apply Dacroment liquid, solidification, cooling, post-processing etc..
Dacromet/steel technology is widely used in electric power, building, ocean engineering, household electrical appliance, railway, bridge, tunnel, army
Thing industry and Powder Metallurgy Industry field, to replace the coating layers such as traditional zinc-plated, cadmium plating.But the coating primary disadvantage is that,
Since Dacromet/steel is a high temperature sintering layer, its surface hardness and scratch resistance capability is obtained than other traditional coating process
Coating it is slightly poor, metal component surface coating after coating is softer, hardness is not high, and often metal component is by long-distance transport
Afterwards, metal component surface often occur, there is a phenomenon where spot corrosion due to coating scratches, this affects Dacroment painting to a certain extent
The popularization and application of layer technology.
Dacroment technique currently used for powder metallurgy product often complex process, use value is not high, can not improve
The rustless property and corrosion resistance of powder metallurgy product, performance is poor in the comparison of colleague field and generalization is weak.
Summary of the invention
In view of the defects and deficiencies of the prior art, the present invention intends to provide a kind of powder metallurgy product antirusts with reaching
The technique of Crow, simple process, use value is high, can improve the rustless property and corrosion resistance of powder metallurgy product,
In the identical situation of coating layer thickness, the corrosion resistant ability of Dacroment technique is 7-10 times of traditional zinc coat, in colleague field pair
The function admirable and generalization is strong than in.
To achieve the above object, the present invention is that it is comprised the following steps using following technical scheme:
Step 1: pretreatment: it is started the cleaning processing using surface of the organic solvent to powder metallurgy product, removes surface and oil contaminant,
It deoils carrying out secondary cleaning using electrolytic degreasing；
Step 2: processing of rust removing: the powder metallurgy product after washing is placed in alkaline solution and is impregnated, when dipping a length of 3-
During which 7Min constantly stirs powder metallurgy product, to remove the impurity such as surface scale；
Step 3: polishing treatment: the product Jing Guo processing of rust removing being dried, electrobrightening is then carried out, makes its surface roughness
It reduces, it is brighter and smooth；
Step 4: blasting treatment: the powder metallurgy product by polishing being carried out blasting treatment, enhances its surface adhesion force；
Step 5: dipping Dacroment: the powder metallurgy product Jing Guo blasting treatment is immersed in the dacroment process liquid；
Step 6: coating naturally: being immersed in the regular hour in the dacroment process liquid, cover one layer to powder metallurgy product surface
The Dacromet/steel of 3-4um thickness takes out powder metallurgy product；
Step 7: air cooking: the powder metallurgy product coated with Dacromet/steel of taking-up is placed in circulating hot wind stove
It is toasted, baking temperature is 300 DEG C；
Step 8: cooling finished product: will take out by the powder metallurgy product of air cooking, cooled down naturally under cold wind to get arriving
Powder metallurgy product coated with Dacromet/steel.
In the step 1 organic solvent include ethyl alcohol, petroleum ether, one of carbon tetrachloride, acetone, trichloro ethylene or
It is a variety of.
The step 2 neutral and alkali solution includes hydroxide solution, carbonate, bicarbonate solution, ammonium hydroxide.
The material spray used in blasting treatment in the step 4 includes copper ore, quartz sand, diamond dust, iron sand, SEMEN AMOMI LONGILIGULA
One of or it is a variety of.
Sandblasting layer with a thickness of 2-3um in the step 4.
Protective gas is passed through when toasting in the step 7.
The protective gas includes one of helium, neon, argon, krypton, xenon or a variety of.
The working principle of the invention: being started the cleaning processing using surface of the organic solvent to powder metallurgy product, removes table
Face greasy dirt deoils carrying out secondary cleaning using electrolytic degreasing；Powder metallurgy product after washing is placed in alkaline solution
Dipping, when dipping a length of 3-7Min, during which constantly powder metallurgy product is stirred, to remove the impurity such as surface scale
By the product drying Jing Guo processing of rust removing, electrobrightening is then carried out, makes the reduction of its surface roughness, it is brighter and smooth；It will
Powder metallurgy product by polishing carries out blasting treatment, enhances its surface adhesion force；By the powder metallurgy Jing Guo blasting treatment
Product is immersed in the dacroment process liquid；It is immersed in the regular hour in the dacroment process liquid, is covered to powder metallurgy product surface
The Dacromet/steel of one layer of 3-4um thickness of lid takes out powder metallurgy product, places it in circulating hot wind stove and toasted, and dries
Roasting temperature is 300 DEG C, and baking terminates to be drawn off, and is cooled down naturally under cold wind to get the powder coated with Dacromet/steel is arrived
Metallurgic product.
After adopting the above technical scheme, the invention has the following beneficial effects: simple process, use value height, can improve powder
The rustless property and corrosion resistance of metallurgic product, in the identical situation of coating layer thickness, the corrosion resistant ability of Dacroment technique
7-10 times of traditional zinc coat, colleague field comparison in function admirable and generalization it is strong.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 is process flow chart of the invention.
Specific embodiment
Present embodiment the technical solution adopted is that, it is comprised the following steps:
Step 1: pretreatment: it is started the cleaning processing using surface of the organic solvent to powder metallurgy product, removes surface and oil contaminant,
It deoils carrying out secondary cleaning using electrolytic degreasing；
Step 2: processing of rust removing: the powder metallurgy product after washing is placed in alkaline solution and is impregnated, when dipping a length of 3-
During which 7Min constantly stirs powder metallurgy product, to remove the impurity such as surface scale；
Step 3: polishing treatment: the product Jing Guo processing of rust removing being dried, electrobrightening is then carried out, makes its surface roughness
It reduces, it is brighter and smooth；Electrobrightening is not required to complex device, can polish complex-shaped workpiece, can polish simultaneously very
Multi-work piece, it is high-efficient, the influence of cathode reaction can be eliminated, effect is preferable；
Step 4: blasting treatment: the powder metallurgy product by polishing being carried out blasting treatment, enhances its surface adhesion force；
Step 5: dipping Dacroment: the powder metallurgy product Jing Guo blasting treatment is immersed in the dacroment process liquid；
Step 6: coating naturally: being immersed in the regular hour in the dacroment process liquid, cover one layer to powder metallurgy product surface
The Dacromet/steel of 3-4um thickness takes out powder metallurgy product；
Step 7: air cooking: the powder metallurgy product coated with Dacromet/steel of taking-up is placed in circulating hot wind stove
It is toasted, baking temperature is 300 DEG C；
Step 8: cooling finished product: will take out by the powder metallurgy product of air cooking, cooled down naturally under cold wind to get arriving
Powder metallurgy product coated with Dacromet/steel.
In the step 1 organic solvent include ethyl alcohol, petroleum ether, one of carbon tetrachloride, acetone, trichloro ethylene or
It is a variety of.Organic solvent is capable of the grease stain on dissolved powders metallurgic product surface, plays the role of cleaning.
The step 2 neutral and alkali solution includes hydroxide solution, carbonate, bicarbonate solution, ammonium hydroxide.Alkalinity is molten
Liquid can wash the impurity such as the surface scale of powder metallurgy product.
The material spray used in blasting treatment in the step 4 includes copper ore, quartz sand, diamond dust, iron sand, SEMEN AMOMI LONGILIGULA
One of or it is a variety of.Blasting treatment makes the appearance of workpiece surface or shape change, abrasive material to the impact of workpiece surface and
Shear action makes the surface of workpiece obtain certain cleannes and different roughness, obtains the mechanical performance of workpiece surface
Improve, therefore improve the fatigue resistance of workpiece, increases its adhesive force between coating, extend the durability of film,
It is also beneficial to the levelling and decoration of coating.
Sandblasting layer with a thickness of 2-3um in the step 4.Reasonable spray sand layer thickness can be improved powder metallurgy product
Performance.
Protective gas is passed through when toasting in the step 7.Protective gas can play the work of protection circulation in baking
With.
The protective gas includes one of helium, neon, argon, krypton, xenon or a variety of.Inert gas potentially acts as good guarantor
Protect effect.
The working principle of the invention: being started the cleaning processing using surface of the organic solvent to powder metallurgy product, removes table
Face greasy dirt deoils carrying out secondary cleaning using electrolytic degreasing；Powder metallurgy product after washing is placed in alkaline solution
Dipping, when dipping a length of 3-7Min, during which constantly powder metallurgy product is stirred, to remove the impurity such as surface scale
By the product drying Jing Guo processing of rust removing, electrobrightening is then carried out, makes the reduction of its surface roughness, it is brighter and smooth；It will
Powder metallurgy product by polishing carries out blasting treatment, enhances its surface adhesion force；By the powder metallurgy Jing Guo blasting treatment
Product is immersed in the dacroment process liquid；It is immersed in the regular hour in the dacroment process liquid, is covered to powder metallurgy product surface
The Dacromet/steel of one layer of 3-4um thickness of lid takes out powder metallurgy product, places it in circulating hot wind stove and toasted, and dries
Roasting temperature is 300 DEG C, and baking terminates to be drawn off, and is cooled down naturally under cold wind to get the powder coated with Dacromet/steel is arrived
Metallurgic product.
After adopting the above technical scheme, the invention has the following beneficial effects: simple process, use value height, can improve powder
The rustless property and corrosion resistance of metallurgic product, in the identical situation of coating layer thickness, the corrosion resistant ability of Dacroment technique
7-10 times of traditional zinc coat, colleague field comparison in function admirable and generalization it is strong.
The above is only used to illustrate the technical scheme of the present invention and not to limit it, and those of ordinary skill in the art are to this hair
The other modifications or equivalent replacement that bright technical solution is made, as long as it does not depart from the spirit and scope of the technical scheme of the present invention,
It is intended to be within the scope of the claims of the invention.
Claims (7)
1. a kind of technique of powder metallurgy product antirust Dacroment, which is characterized in that it is comprised the following steps:
Step 1: pretreatment: it is started the cleaning processing using surface of the organic solvent to powder metallurgy product, removes surface and oil contaminant,
It deoils carrying out secondary cleaning using electrolytic degreasing；
Step 2: processing of rust removing: the powder metallurgy product after washing is placed in alkaline solution and is impregnated, when dipping a length of 3-
During which 7Min constantly stirs powder metallurgy product, to remove the impurity such as surface scale；
Step 3: polishing treatment: the product Jing Guo processing of rust removing being dried, electrobrightening is then carried out, makes its surface roughness
It reduces, it is brighter and smooth；
Step 4: blasting treatment: the powder metallurgy product by polishing being carried out blasting treatment, enhances its surface adhesion force；
Step 5: dipping Dacroment: the powder metallurgy product Jing Guo blasting treatment is immersed in the dacroment process liquid；
Step 6: coating naturally: being immersed in the regular hour in the dacroment process liquid, cover one layer to powder metallurgy product surface
The Dacromet/steel of 3-4um thickness takes out powder metallurgy product；
Step 7: air cooking: the powder metallurgy product coated with Dacromet/steel of taking-up is placed in circulating hot wind stove
It is toasted, baking temperature is 300 DEG C；
Step 8: cooling finished product: will take out by the powder metallurgy product of air cooking, cooled down naturally under cold wind to get arriving
Powder metallurgy product coated with Dacromet/steel.
2. a kind of technique of powder metallurgy product antirust Dacroment according to claim 1, it is characterised in that: the step
Organic solvent includes ethyl alcohol, petroleum ether, one of carbon tetrachloride, acetone, trichloro ethylene or a variety of in rapid one.
3. a kind of technique of powder metallurgy product antirust Dacroment according to claim 1, it is characterised in that: the step
Rapid two neutral and alkalis solution includes hydroxide solution, carbonate, bicarbonate solution, ammonium hydroxide.
4. a kind of technique of powder metallurgy product antirust Dacroment according to claim 1, it is characterised in that: the step
The material spray used in blasting treatment in rapid four includes one of copper ore, quartz sand, diamond dust, iron sand, SEMEN AMOMI LONGILIGULA or a variety of.
5. a kind of technique of powder metallurgy product antirust Dacroment according to claim 1, it is characterised in that: the step
Protective gas is passed through when toasting in rapid seven.
6. a kind of technique of powder metallurgy product antirust Dacroment according to claim 5, it is characterised in that: the guarantor
Protecting gas includes one of helium, neon, argon, krypton, xenon or a variety of.
7. a kind of technique of powder metallurgy product antirust Dacroment according to claim 1, it is characterised in that: the step
Sandblasting layer with a thickness of 2-3um in rapid four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811386130.8A CN109590193A (en) | 2018-11-20 | 2018-11-20 | A kind of technique of powder metallurgy product antirust Dacroment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811386130.8A CN109590193A (en) | 2018-11-20 | 2018-11-20 | A kind of technique of powder metallurgy product antirust Dacroment |
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| Publication Number | Publication Date |
|---|---|
| CN109590193A true CN109590193A (en) | 2019-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811386130.8A Pending CN109590193A (en) | 2018-11-20 | 2018-11-20 | A kind of technique of powder metallurgy product antirust Dacroment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112517912A (en) * | 2020-11-11 | 2021-03-19 | 西安理工大学 | Surface anticorrosion treatment method for powder metallurgy iron-based part |
| CN115673177A (en) * | 2023-01-05 | 2023-02-03 | 天津华源时代金属制品有限公司 | Steel wire coating processing technology based on Dacromet coating |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0565675A (en) * | 1991-09-09 | 1993-03-19 | Nippon Steel Corp | Surface treated steel sheet excellent in formability |
| KR20160120236A (en) * | 2015-04-07 | 2016-10-17 | 가부시키가이샤 고베 세이코쇼 | Steel material for painting excellent in corrosion resistance |
| CN106179908A (en) * | 2016-07-29 | 2016-12-07 | 广西安讯科技投资有限公司 | A kind of preparation method of the fire pump stator of coating |
-
2018
- 2018-11-20 CN CN201811386130.8A patent/CN109590193A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0565675A (en) * | 1991-09-09 | 1993-03-19 | Nippon Steel Corp | Surface treated steel sheet excellent in formability |
| KR20160120236A (en) * | 2015-04-07 | 2016-10-17 | 가부시키가이샤 고베 세이코쇼 | Steel material for painting excellent in corrosion resistance |
| CN106179908A (en) * | 2016-07-29 | 2016-12-07 | 广西安讯科技投资有限公司 | A kind of preparation method of the fire pump stator of coating |
Non-Patent Citations (1)
| Title |
|---|
| 任广军: "《电镀工艺学》", 31 December 2016, 中国建材工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112517912A (en) * | 2020-11-11 | 2021-03-19 | 西安理工大学 | Surface anticorrosion treatment method for powder metallurgy iron-based part |
| CN115673177A (en) * | 2023-01-05 | 2023-02-03 | 天津华源时代金属制品有限公司 | Steel wire coating processing technology based on Dacromet coating |
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Application publication date: 20190409 |