CN102747208A - Oxidation resisting method for double-forging-formed forge piece - Google Patents
Oxidation resisting method for double-forging-formed forge piece Download PDFInfo
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- CN102747208A CN102747208A CN2012102430537A CN201210243053A CN102747208A CN 102747208 A CN102747208 A CN 102747208A CN 2012102430537 A CN2012102430537 A CN 2012102430537A CN 201210243053 A CN201210243053 A CN 201210243053A CN 102747208 A CN102747208 A CN 102747208A
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- forging
- oxidation
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- forge piece
- copper
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Abstract
The invention relates to a method for preventing a workpiece from oxidation in a forging heating process, particularly a method for preventing a workpiece from oxidation in a heating process of a forge piece requiring double forging forming. Copper, copper alloy or any other protective metal with similar thermal expansion coefficient to the base material is electroplated on the forge piece surface, and a water-dispersible paint is coated on the outer layer, thereby solving the problem that oxidation of the double-heated double-forging-formed forge piece can not be effectively prevented. The method comprises the following steps: carrying out shot blasting, acid washing or machining on a blank material for forging to remove rust on the surface layer, electroplating 10-30 mu m of the protective metal with similar thermal expansion coefficient to the base material, coating more than 40 mu m of the water-dispersible paint, and carrying out oven-drying or natural drying. The protective metal with similar thermal expansion coefficient to the base material is copper or copper alloy. The invention can avoid ablation in the material heating process, prevent oxide skin from generation, reduce the consumption of the material, and lower the difficulty and workload of the subsequent processing.
Description
Technical field:
The present invention relates to prevent in a kind of Forge Heating process the method for workpiece oxidation, particularly prevent the method for workpiece oxidation in the heat-processed of twice forging molding of forging needs.
Background technology:
The method of Forge Heating: be to adopt the reducing atmosphere stove to heat 2 1)) be the electric furnace heating, 3) be the intermediate frequency furnace heating, 4) be the combustion gas heating.The first three type of heating can reduce but can not avoid the generation of oxide debris; The combustion gas type of heating produces a large amount of oxide debris, and the combustion gas type of heating is to use type of heating widely.
Prevent the method for workpiece oxidation in the Forge Heating process, 1) be before heating, to be coated with the water-dispersion coating protection; Utilize the vacuum environment protection when 2) being heating of electric furnace or intermediate frequency furnace and forging.The former is applicable to the method that prevents the workpiece oxidation in the heat-processed of a forging molding process.For the workpiece of twice forging molding of need, because coating comes off, no longer play the effect of protection during second-heating; As do not adopt vacuum environment to forge; Can not effectively play the effect that prevents the workpiece oxidation in the heat-processed, forge as adopting vacuum environment, forging equipment is complicated; Realize difficulty, it is high to forge cost.
Prevent in comprehensive above-mentioned two kinds of Forge Heating processes that the method for workpiece oxidation from can find out, for twice heating of need, twice forging molding, do not have method effectively to prevent the method for workpiece oxidation.
Summary of the invention:
The present invention is through at protection metals close with the body material thermal expansivity such as copper facing of forging surface electrical and copper alloys, and its skin is coated with water-dispersion coating, has solved the problem that twice heating, twice forging molding forging can't effectively prevent the workpiece oxidation.
The present invention realizes through following technical scheme:
A kind of twice forging molding forging anti-oxidation method may further comprise the steps:
Carry out the corrosion that ball blast, pickling or mechanical workout are removed the top layer with forging with blank material, electroplate the protection metal 10 μ ms～30 μ ms close, be coated with more than the water-dispersion coating 40 μ m, oven dry or seasoning with the body material thermal expansivity.
The protection metal close with the body material thermal expansivity is copper or copper alloy.
The present invention can avoid the ablation of material heat-processed, prevents that oxide debris from generating, and reduces the consumption of material, reduces the difficulty and the amount of finish of following process simultaneously.
Embodiment:
Embodiment 1
The forging protection of large-scale bent axle is removed the top layer corrosion with the steel alloy blank with machining process, electro-coppering or copper alloy 20 μ m.Be coated with water-dispersion coating 45 μ m, seasoning.Heat 1100 ℃～1250 ℃ and carry out blocking one-step forming just, heat 1100 ℃～1250 ℃ once more and carry out finish-forging and reach the final molding requirement.
Embodiment 2
The forging protection of balance arm is removed the top layer corrosion with blank (steel) with machining process, electro-coppering or copper alloy 10 μ m.Be coated with water-dispersion coating 40 μ m, seasoning.Heat 1100 ℃～1250 ℃ and carry out blocking one-step forming just, heat 1100 ℃～1250 ℃ once more and carry out finish-forging and reach the final molding requirement.
The present invention is through at protection metals close with the body material thermal expansivity such as copper facing of forging surface electrical and copper alloys, and its skin is coated with water-dispersion coating.In first time during heats forged, outer water-dispersion coating plays a protective role, and comes off after the forging; In second time during heats forged, coating such as internal layer copper and copper alloy play a protective role, and reach the oxidation resistant purpose of forging of twice heating, twice forging molding.When forging for the first time for forging, temperature must be carried out the heating second time near final forging temperature.Can be used for flat-die forging and die forging, the protection metals close with the body material thermal expansivity such as electro-coppering and copper alloy can keep or adopt methods such as machinery, chemistry to remove.
Claims (2)
1. twice forging molding forging anti-oxidation method is characterized in that: may further comprise the steps:
Carry out the corrosion that ball blast, pickling or mechanical workout are removed the top layer with forging with blank material, electroplate the protection metal 10 μ ms～30 μ ms close, be coated with more than the water-dispersion coating 40 μ m, oven dry or seasoning with the body material thermal expansivity.
2. a kind of twice forging molding forging anti-oxidation method according to claim 1, it is characterized in that: the protection metal close with the body material thermal expansivity is copper or copper alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102430537A CN102747208A (en) | 2012-07-12 | 2012-07-12 | Oxidation resisting method for double-forging-formed forge piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102430537A CN102747208A (en) | 2012-07-12 | 2012-07-12 | Oxidation resisting method for double-forging-formed forge piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102747208A true CN102747208A (en) | 2012-10-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102430537A Pending CN102747208A (en) | 2012-07-12 | 2012-07-12 | Oxidation resisting method for double-forging-formed forge piece |
Country Status (1)
| Country | Link |
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| CN (1) | CN102747208A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50152909A (en) * | 1974-05-30 | 1975-12-09 | ||
| SU1203118A1 (en) * | 1983-06-24 | 1986-01-07 | Приборомеханическое Объединение "Курганприбор" | Method of heat treatment of steel articles |
| JPH02107717A (en) * | 1988-10-18 | 1990-04-19 | Tomoshizu Shinozaki | Method for nonoxidizing heat treatment of metal |
| CN101058684A (en) * | 2006-04-21 | 2007-10-24 | 中国科学院过程工程研究所 | High temperature common mild steel anti-oxidation coating and application thereof |
| CN101113487A (en) * | 2007-09-04 | 2008-01-30 | 广州市锐优表面科技有限公司 | Annealing furnace roller surface peening coating and method for making same |
-
2012
- 2012-07-12 CN CN2012102430537A patent/CN102747208A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50152909A (en) * | 1974-05-30 | 1975-12-09 | ||
| SU1203118A1 (en) * | 1983-06-24 | 1986-01-07 | Приборомеханическое Объединение "Курганприбор" | Method of heat treatment of steel articles |
| JPH02107717A (en) * | 1988-10-18 | 1990-04-19 | Tomoshizu Shinozaki | Method for nonoxidizing heat treatment of metal |
| CN101058684A (en) * | 2006-04-21 | 2007-10-24 | 中国科学院过程工程研究所 | High temperature common mild steel anti-oxidation coating and application thereof |
| CN101113487A (en) * | 2007-09-04 | 2008-01-30 | 广州市锐优表面科技有限公司 | Annealing furnace roller surface peening coating and method for making same |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20121024 |