CN1864892A - Copper and copper alloy surface pressurized cast-infiltration method - Google Patents
Copper and copper alloy surface pressurized cast-infiltration method Download PDFInfo
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- CN1864892A CN1864892A CN 200510096349 CN200510096349A CN1864892A CN 1864892 A CN1864892 A CN 1864892A CN 200510096349 CN200510096349 CN 200510096349 CN 200510096349 A CN200510096349 A CN 200510096349A CN 1864892 A CN1864892 A CN 1864892A
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Abstract
The invention relates to a method of pressure doping on the surface of copper and copper alloy, which is purposed to produce the abrasion, corrosion, oxidation, and impact resistant composite material, inside the metal mould. And it can be completed by at the time that forming surface doping layer and compressing work-piece. It mixes the strength powder and the adhesive, to prepare the dope, to be coated on special surface of metal die; then drying the coated metal die mould at 100-200Deg. C; then preheating the mould to 250-350Deg. C. It is characterized in that: it preheats the compress head when preheating the metal mould, then pours the copper and copper alloy melt liquid into metal mould; then the compress head compresses and molds the poured melt liquid.
Description
Technical field
The present invention utilizes the method that casting is oozed to prepare copper and copper alloy surface composite in metal type dies.
Background technology
Surface property is the most parts deciding factors in service life, the workpiece of aspect such as particularly wear-resisting, anti-corrosion, resistance to oxidation, shock resistance, so the research of surface modification has become a key areas of material science research.Surface modifying method commonly used at present has: plating, chemical plating, built-up welding, thermal spraying, physical vapour deposition (PVD), cryogenic gas discharge sulfurizing, plasma splash, heat treatment multicomponent thermochemical treatment etc., these methods all are the after-treatments behind component shaping, and need special equipment, long, technology relative complex of production cycle.In addition, the casting that new development is got up in the eighties in 20th century oozes that to deliver the research of surface modification process aspect cast iron and cast steel more, and certain progress has been arranged, but is not particularly seeing that report is arranged aspect wider copper of commercial Application and the copper alloy at non-ferrous alloy.
The objective of the invention is by using technology of infiltration casting manufactured copper and copper alloy surface is wear-resisting, anti-corrosion, anti-oxidant, the shock resistance functional composite material in metal die, and be to finish simultaneously with the extruding workpiece in the formation of copper and copper alloy surface infiltration layer.
The present invention is copper and copper alloy surface pressurized cast-infiltration method, to strengthen powder fully mixes with binding agent, be prefabricated into coating, brushing is in the particular surface of metal mold, to be coated with the metal type dies that hangs up properly again and under 100～200 ℃ temperature, dry processing, with mould and die preheating to 250～350 ℃, it is characterized in that in the metal type dies preheating, pressure head is also carried out preheating, then copper and molten alloyed copper are poured into metal type dies, pressure head will pour into copper and the molten alloyed copper extrusion modling in the metal die.
The downward pressure of pressure head is 750～800 tons, and the speed of pressing down is 7.5～17.5mm/s.
The present invention has following characteristics with the whole hardening constituent ratio of foundry goods: 1. alloying element can be utilized effectively; 2. the foundry goods local surfaces has property; 3. according to this instructions for use, for obtaining surperficial optimality ergosphere, the chemical composition of foundry goods mother metal can freely be selected; The thickness of 4. surperficial particularity ergosphere and composition can design according to performance requirement; 5. infiltration layer and copper and copper alloy matrix bond strength height; 6. anti-fatigue life is long; 7. surperficial infiltration layer is thick.Compare with other surface modifying methods, made full use of the casting solidification waste heat, do not need special Workpiece treating apparatus, workpiece can or be strengthened and once finish by castable and surface modification, and technology is simple, with low cost, with short production cycle.
The specific embodiment
The present invention adopts the method that casting is oozed to prepare copper and copper alloy surface composite in metal type dies and under certain pressure effect.To strengthen powder and fully mix with binding agent, and be prefabricated into coating, the binding agent of employing is that proportion is 1.01～1.02g/cm
3Latex, or latex and boric acid the two mix, add 2% waterglass, brush particular surface then in metal mold, coating thickness is 1～2mm.To be coated with the metal type dies that hangs up properly again and under 100～200 ℃ temperature, dry processing, and with mould and die preheating to 250～350 ℃, under the pressure of 800T ton, the speed of pressing down that pressure head keeps is 7.5～17.5mm/s, with melted copper and the copper alloy solution extrusion modling that pours in the metal die, thereby form wear-resisting, the resistance to oxidation that thickness is 1～2mm, corrosion-resistant, impact-resistant composite at copper and copper alloy surface.
The copper that obtains by said method and the structure of copper alloy surface composite are: can be divided into three layers from the material surface to the matrix, to strengthen the functional layer of powder; Strengthen the fused layers of powder and matrix; Transition zone based on matrix.And the distribution of alloying element is tangible graded; The hardness of material surface also changes in gradient, thereby reaches outer hard interior gentle; While surface functional layer and high base strength height; Can obtain having the surface composite layer of difference in functionality according to the variation of reinforcing material.As: wear-resisting, anti-corrosion, resistance to oxidation, shock resistance etc.
Claims (2)
1, copper and copper alloy surface pressurized cast-infiltration method, to strengthen powder fully mixes with binding agent, be prefabricated into coating, brushing is in the particular surface of metal mold, to be coated with the metal type dies that hangs up properly again and under 100～200 ℃ temperature, dry processing, with mould and die preheating to 250～350 ℃, it is characterized in that in the metal type dies preheating, pressure head is also carried out preheating, then copper and molten alloyed copper are poured into metal type dies, pressure head will pour into copper and the molten alloyed copper extrusion modling in the metal die.
2, copper according to claim 1 and copper alloy surface pressurized cast-infiltration method is characterized in that the downward pressure of pressure head is 750～800 tons, and the speed of pressing down is 7.5～17.5mm/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510096349 CN1864892A (en) | 2005-11-11 | 2005-11-11 | Copper and copper alloy surface pressurized cast-infiltration method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510096349 CN1864892A (en) | 2005-11-11 | 2005-11-11 | Copper and copper alloy surface pressurized cast-infiltration method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1864892A true CN1864892A (en) | 2006-11-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510096349 Pending CN1864892A (en) | 2005-11-11 | 2005-11-11 | Copper and copper alloy surface pressurized cast-infiltration method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103938147A (en) * | 2014-05-08 | 2014-07-23 | 苏州皇森机电科技有限公司 | Manufacturing method of wear-resistant self-lubricating high-strength abrasive steel composite material |
| CN111842852A (en) * | 2020-07-30 | 2020-10-30 | 兰州理工大学 | Method for preparing wear-resistant corrosion-resistant high-strength copper and copper alloy structural member by liquid die forging infiltration |
| CN112170818A (en) * | 2020-10-14 | 2021-01-05 | 江西奥易特新材料有限公司 | Production method of copper casting |
-
2005
- 2005-11-11 CN CN 200510096349 patent/CN1864892A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103938147A (en) * | 2014-05-08 | 2014-07-23 | 苏州皇森机电科技有限公司 | Manufacturing method of wear-resistant self-lubricating high-strength abrasive steel composite material |
| CN111842852A (en) * | 2020-07-30 | 2020-10-30 | 兰州理工大学 | Method for preparing wear-resistant corrosion-resistant high-strength copper and copper alloy structural member by liquid die forging infiltration |
| CN112170818A (en) * | 2020-10-14 | 2021-01-05 | 江西奥易特新材料有限公司 | Production method of copper casting |
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