CN1016799B - Controlled aluminium-powder calorization - Google Patents
Controlled aluminium-powder calorizationInfo
- Publication number
- CN1016799B CN1016799B CN 88105363 CN88105363A CN1016799B CN 1016799 B CN1016799 B CN 1016799B CN 88105363 CN88105363 CN 88105363 CN 88105363 A CN88105363 A CN 88105363A CN 1016799 B CN1016799 B CN 1016799B
- Authority
- CN
- China
- Prior art keywords
- work piece
- aluminium
- powder
- coating
- aluminized
- Prior art date
- 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.)
- Expired
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- Application Of Or Painting With Fluid Materials (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
The present invention relates to an aluminizing method by penetration, which belongs to the technical field of coating the surfaces of metallic materials by penetration. The method comprises: first, the aqueous solution of polyvinyl alcohol is mixed with aluminum powder, and a mixture is directly sprayed or painted on the surface of a work piece to be coated; second, a sodium borate solution is painted on the surface of the work piece to be coated after the work piece to be coated is dried; third, the work piece is put into a high-temperature cabinet for heat preservation after being dried again, and the positions on the surface of the work piece, where need to be aluminized, are aluminized by penetration when the work piece is taken out of the high-temperature cabinet. When the method is used for aluminizing, the method has the advantages of simple process, simple required equipment, low cost, high coating quantity, manual control of the coating thickness and controllable coating position of the aluminized work piece.
Description
The present invention is a kind of aluminized method of oozing, and belongs to the technical field of metal material surface plating.
Require high temperature resistant, anti-oxidant, corrosion resistant in addition parts for many, the thin alumina layer of one deck is arranged on the surface, can make the life-span improve several times even tens times.But it is simple that aluminized method does not resemble the electro-plating method such as chromium plating, its technology more complicated, and the quality of plating does not also reach the ideal degree.As " hot dip process method ", this is to keep the regular hour to realize in the aluminium liquid that has melted immersing through other parts of surface-treated, but in aluminized process, owing to be in the uncovered equipment of aluminizing under the high-temperature condition, aluminium liquid surface constantly has alumina layer to produce, if it adheres on the surface of workpiece to be plated, the effect of plating is just poor, and it is very difficult to remove lip-deep alumina layer, so this plating method not only its difficult quality is guaranteed, and the loss of aluminium and heat energy loss are all very big, and therefore, this method generally seldom adopts.In addition, aluminized method also has " paste method ", " electrolytic process ", " vapour deposition process and powder method " etc.Wherein " paste method " is under high-temperature condition, and through just finishing after the heating for a long time, and heat energy loss is big, and easily pollute on the surface, coating surface bright and clean poor.And electrolytic process and vapour deposition process never put into practice fully also owing to also have many problems.The present powder method process of aluminizing is: with shielding gas or vacuum oven workpiece to be plated is carried out pre-treatment earlier, pass through High temperature diffusion again.Adopt this method, all than higher, the production cycle is long for its equipment requirements and processing requirement, and therefore this method extensively is not used.
Purpose of the present invention is exactly the problem at above existence, creates a kind of processing method of the controlled plating of powder method of aluminium, plating aluminium in this way, and its cost is low, and technology is simple, the quality height of coating, and the thickness of coating of aluminium can artificially be controlled.
Its method of the controlled plating of the powder method of aluminium of the present invention is: polyvinyl alcohol water solution and aluminium powder with certain proportioning are mixed well, spray then or brush on the workpiece to be plated and will ooze aluminized place, its thickness of coating can be grasped by operator voluntarily according to the thickness of coating, afterwards with coated and dried, after treating that workpiece and cooling are taken out in oven dry, cross liquid in this coatingsurface spraying or the saturated borax of brushing one deck ebullient again, carry out the oven dry second time afterwards, high temperature box furnace just can be put into the workpiece that is plated in the oven dry back, just can take out through insulation in about 2 minutes under 850 ℃～950 ℃, at this moment the surface of workpiece to be plated is with regard to the aluminium lamination of the firm light of plating last layer.
Adopt its advantage of plating method of the present invention to be:
1. the processing requirement of plating and equipment requirements are all fairly simple.
2. the cost of plating is very low, and needed more valuable starting material when not needing common plating in the raw material are as soluble resin, ammonia chloride, rare earth element and Al alloy powder; And only use the lower polyvinyl alcohol of price, borax, and aluminium powder.
3. the quality height of plating, the smooth finish of coating is also high, and the thickness of its coating can artificially control, and can carry out local plating to workpiece.
4. the time of finishing whole technological process is short, and it is low, pollution-free to consume energy.
The present invention is applicable to that to the easy oxidation of work down of hot state, parts, the fastening piece in addition of easy-to-rust carry out the plating of aluminium, and the protection workpiece is not oxidized, prolongs its work-ing life.In civil goods, the general usefulness of people's cooking be iron pan, wherein the advantage of cast iron pan is that antioxidant property is good, but heat transfer efficiency is low, heavy, fragile.And the advantage of wrought iron pan is that suitability for industrialized production speed is fast, and is light and handy, but not corrosion-resistant, and in the process of use, the outside surface of pot can constantly peel off down zone of oxidation, so shortens work-ing life.But behind the outside surface plating last layer aluminium of wrought iron pan, this pot not only its heat transfer efficiency can improve greatly, and the outside surface of pot is difficult for corrosion, and the life-span of use also can prolong greatly.
Specific embodiments of the present invention is as follows:
Polyvinyl alcohol water solution and 100～200 purpose aluminium powders with certain proportioning are mixed well, then with the spray gun of the usefulness of spraying paint or the spraying of aluminium powder mixed solution that spread pen will mix up or brush the workpiece to be plated surface and need ooze aluminized place, the aluminized as requested thickness of the thickness of its coating and deciding, can control by the content of aluminium powder in the aluminium powder mixed solution, after being coated with, the baking oven of workpiece being put into 80 ℃～140 ℃ of temperature is dried, after treating that workpiece and cooling are taken out in oven dry, again at the saturated borax soln of surface brush one deck ebullient of coating, carry out the oven dry second time again, the temperature of this time oven dry also is 80 ℃～140 ℃, the high temperature box furnace that just workpiece can be put into 850 ℃～950 ℃ after the oven dry is incubated, the time of insulation decides according to the thickness of coating, be generally 1 minute to 2 minutes, take out workpiece through after the soak, at this moment workpiece surface is just by plating plating layer of aluminum.
Claims (2)
1, the controlled plating method of a kind of powder method of aluminium, it is characterized in that the mixed solution of polyvinyl alcohol water solution aluminium powder is directly sprayed or brushes the surface of workpiece to be plated, brush the saturated borax soln of one deck ebullient after drying again, carry out the oven dry second time again, the workpiece that will be plated again after the oven dry is put into high temperature box furnace and is incubated, and is 1-2 minute 850 ℃～950 ℃ following soaking times.
2, the controlled plating method of the powder method of aluminium according to claim 1, it is characterized in that for the first time and drying controlled temperature for the second time is 80 ℃～140 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88105363 CN1016799B (en) | 1988-02-04 | 1988-02-04 | Controlled aluminium-powder calorization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88105363 CN1016799B (en) | 1988-02-04 | 1988-02-04 | Controlled aluminium-powder calorization |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN88105363A CN88105363A (en) | 1988-09-28 |
| CN1016799B true CN1016799B (en) | 1992-05-27 |
Family
ID=4833564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88105363 Expired CN1016799B (en) | 1988-02-04 | 1988-02-04 | Controlled aluminium-powder calorization |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1016799B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100562604C (en) * | 2005-04-29 | 2009-11-25 | 奥图泰有限公司 | On the aluminium workpiece, form the method for the silver surface that closely cooperates |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102634752A (en) * | 2012-05-03 | 2012-08-15 | 株洲西迪硬质合金科技有限公司 | Boriding method of wear-resisting composite member |
-
1988
- 1988-02-04 CN CN 88105363 patent/CN1016799B/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100562604C (en) * | 2005-04-29 | 2009-11-25 | 奥图泰有限公司 | On the aluminium workpiece, form the method for the silver surface that closely cooperates |
Also Published As
| Publication number | Publication date |
|---|---|
| CN88105363A (en) | 1988-09-28 |
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Legal Events
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |