CN1789450A - Method for preparing micro-grain aluminium bronze alloy - Google Patents
Method for preparing micro-grain aluminium bronze alloy Download PDFInfo
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- CN1789450A CN1789450A CN 200510111811 CN200510111811A CN1789450A CN 1789450 A CN1789450 A CN 1789450A CN 200510111811 CN200510111811 CN 200510111811 CN 200510111811 A CN200510111811 A CN 200510111811A CN 1789450 A CN1789450 A CN 1789450A
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Abstract
The invention relates the method for preparation of microcrystal aluminumbronze alloy, comprising the following steps: melting the 82.7-87.0wt% Cu, 10.0-13.0wt% Al and 3.0-4.3% Fe at the condition of vacuum, making the aluminumbronze alloy casting blank, after reconditioning the casting blank, hot rolling it at 750-900Deg.C to make aluminum-bronze plate, cutting the aluminum-bronze plate to lump blank and carrying out surface preparation and coating glass lubricant, heating the blank and die, squeezing the blank with die and getting the aluminumbronze alloy plate. The invention improves the mechanical property and frictional behavior of aluminumbronze alloy, expanding the application area of alloy and meeting the product requirement.
Description
Technical field
The present invention relates to a kind of preparation method of micro-grain aluminium bronze alloy, adopt the rolling method that combines with the equal channel angular extruding to prepare the micro-grain aluminium bronze alloy bulk, improved the mechanical property and the tribological properties thereof such as plasticity, intensity, hardness of McGill metals, and then the practical engineering application that has improved this alloy is worth.Belong to metallic substance and metallurgical class technical field.
Background technology
McGill metals has excellent physical chemistry, mechanical property, wear-corrosion resistance, it is the engineering materials of a class high comprehensive performance, thereby in civilian, military industry, occupy important status, be widely used in the heavily stressed wear-resisting and structural parts of work down such as mechanical industry, boats and ships and ocean industry, household electrical appliances industry, petrochemical industry, electrical industry and building industry.Along with further developing of science and technology, to the demands for higher performance of this alloy, need further to improve the mechanical property of this alloy, but this alloy is because tissue contains the fragility phase, its cold plasticity is poor, thereby uses ordinary method and technology to improve very difficulty of this alloy property.
Therefore, how the to adopt new technology performance that further improves the xantal material that combines with common process is the primary problem that solves.Studies show that: crystal grain thinning is a kind of effective ways that improve the material internal structure, improve alloy mechanical performance.When grain refining behind 1 μ m, material will show a series of uncommon physics, chemistry, machinery and tribological property, thereby alloy is carried out the researchdevelopment trend that structure refinement is present high performance material.Traditional alloy grain process for refining generally adopts the plastic deformation method, such as forging method, rolling etc.Though traditional viscous deformation technology can refinement McGill metals crystal grain, when grain refining requires very big viscous deformation during to micron dimension even nanometer scale, traditional Technology of Plastic Processing is difficult to reach requirement.The equal channel angular extrusion process is new in recent years a kind of large plastometric set technology of rising, and it is that mode with pure shear realizes the violent viscous deformation of material.This method can obtain the superfine crystal particle structure of high-angle boundary at material internal, and the material that is obtained is changed in nature; This method can obtain equally distributed crystal grain thinning in whole sample, make the stable performance that extruding back material obtains, material through extruding repeatedly after progressively refinement can obtain micron order crystal grain.As publication number is that the Chinese invention patent of CN1528930 has been introduced a kind of micro fine-grained titanium-nickel-niobium marmen blocks preparation method, utilize the equal channel angular extrusion technique that as cast condition titanium nickel-niobium shape memory alloy is pushed, with forging, other plastic deformation method such as rolling is compared has two unique advantages: blank produces the intensive plastix strain in plastic history; The cross-sectional dimension of blank remains unchanged in deformation process.Can prepare bigger block grained material by this technology.But equal channel angular extrusion process principle and method are more effective to the grain refining of magnesium with good plasticity, copper base alloy, the grain refining of the metal alloy of plasticity difference but is subjected to the restriction of several factors, and misoperation causes blank surface crackle even fracture to occur easily.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, a kind of preparation method of micro-grain aluminium bronze alloy is provided, and technology is simple, and is with low cost, can further improve the mechanical property such as intensity, hardness of McGill metals, the aluminum-bronze alloy material that obtained performance is good.
Be to realize this purpose, in the technical scheme of the present invention, adopt the rolling method that combines with the equal channel angular extruding, to the first hot rolling of as cast condition McGill metals, after carry out equal channel angular and push, with the refinement alloy grain.At first raw material is equipped with, under vacuum condition, carry out melting, make the McGill metals strand, with being rolled after the strand heating, make and roll attitude sheet material then, again sheet material is cut into block blank and carry out surface treatment and the coated graphite lubricant, mold cavity surface applied oildag, with blank, mould difference heat tracing, and from process furnace, take out simultaneously and carry out the equal channel angular extruding, finally obtain all good McGill metals bulk of intensity, hardness, plasticity and tribological property.
Micro-grain aluminium bronze alloy preparation method of the present invention is specially: with raw material by mass percentage copper be 82.7～87.0%, aluminium is 10.0～13.0%, iron is 3.0～4.3% to be equipped with, under vacuum condition, carry out melting, make the McGill metals strand, the xantal strand is carried out ball blast, flaw detection, be placed on after reconditioning is handled and be heated to 750～900 ℃ in the process furnace, on milling train, carry out the hot rolling processing after reaching temperature, make and roll attitude McGill metals sheet material, to roll the attitude McGill metals and cut into block blank, blank is carried out surface finish handle, make smooth surface smooth.With acetone blank surface is carried out surface cleaning, blank is placed on the clean stainless steel pallet, preheating is 15～25 minutes under 80～110 ℃ temperature, adopt the method for brushing to apply glass protecting lubricant then in blank surface, coating is wanted evenly, and coat-thickness is 0.2～0.4mm, and dried under 70～100 ℃ temperature 10～15 minutes blank coating back, if occur falling to being coated with, cut, defective such as peel off, should carry out coating or flush away recoat.
The present invention adopts equal channel angular extrusion die, and the squeezing passage angle of mould is 90～120 °.With acetone mould is carried out surface and die cavity and clean, preheating is 40～50 minutes under 120 ℃ temperature, coated graphite lubricant then, and coat-thickness is wanted evenly.
The mould that coats oildag is placed in 500 ℃ the process furnace and heats, be incubated 1～1.5 hour after reaching temperature.The another one process furnace is heated to 700 ℃～850 ℃, ready blank is placed on the asbestos tile, put into this process furnace, treat that temperature is raised to 700 ℃～850 ℃ after, be incubated 15～30 minutes.The blank and the mould that heat are taken out simultaneously, rapidly blank is put into mould then, on universal hydraulic testing machine, blank is pushed.The blank that squeezes out is carried out surface treatment and applies glass lubricant, mold cavity coated graphite lubricant, carry out the 2nd extruding again, can obtain the micro-grain aluminium bronze alloy bulk, its microcosmic average grain size is 0.4～0.8 μ m.
The present invention adopts the rolling preparation technology who combines with the equal channel angular extruding, the as cast condition McGill metals is carried out the rolling reason earlier, carry out the equal channel angular extruding again, this technology has significantly improved the performance of McGill metals on the basis of having reduced the extruding number of times, improved preparation efficiency.Alloy is through after rolling, and material internal defect disappears, and helps the carrying out of equal channel angular extruding.Sample is size constancy before and after extruding, handles simply, and the lumber recovery height, and can realize big workpiece processing.Before the extruding mold cavity and blank to be extruded are lubricated processing respectively, the rapid temperature drop that both can effectively stop blank, can reduce simultaneously the sliding-frictional resistance between blank and mold work surface significantly, thereby improve the flow uniformity of alloy material effectively, guarantee carrying out smoothly of extrusion process; The swabbing processing method is simple, and cost is low, and after actually operating, blank and mould come off voluntarily, do not bond together good manufacturability mutually.The determining and the blank that heats and mould taken out from process furnace simultaneously of blank, mold heated time and soaking time carries out the equal channel angular extruding, can prevent grain growth, help forming tiny xantal micron crystalline substance, finally obtain well behaved McGill metals bulks such as intensity, plasticity.
The method that the present invention adopts traditional technology (rolling) to combine with novel process (equal channel angular extruding), the as cast condition McGill metals is rolled with equal channel angular pushes, blank is after rolling, crystal grain has obtained preliminary refinement, the alloy subsurface defect reduces, help the enforcement of equal channel angular extruding, improved the success ratio of preparation.
Embodiment
Below by specific embodiment technical scheme of the present invention is further described.
Embodiment 1:
With raw material by mass percentage copper be 82.7%, aluminium is 13.0%, iron is 4.3% to be equipped with, under vacuum condition, carry out melting, make the McGill metals strand, the xantal strand carried out being placed on after ball blast, flaw detection, reconditioning are handled be heated to 800 ℃ in the process furnace, on milling train, carry out the hot rolling processing after reaching temperature, make and roll attitude McGill metals sheet material, to roll attitude McGill metals sheet material line, to cut into cross section be 9.3 * 9.3mm, length is the block blank of 100mm, blank is carried out surface finish handle, and makes smooth surface smooth.With acetone blank surface is carried out surface cleaning, blank is placed on the clean stainless steel pallet, preheating is 20 minutes under 90 ℃ temperature, adopt the method for brushing to apply glass lubricant then in blank surface, coating is wanted evenly, coating back blank dry 15 minutes under 80 ℃ temperature, as if occurring falling to being coated with, cut, defective such as peeling off, should carry out coating or flush away recoat.Is that 120 degree moulds carry out surface and die cavity and clean with acetone to the extruding angle, and preheating is 45 minutes under 120 ℃ temperature, coated graphite lubricant then, and coating is even.
The mould that coats oildag is placed in 500 ℃ the process furnace and heats, reached after the temperature insulation 1 hour; The another one process furnace is heated to 750 ℃, ready blank is placed on the asbestos tile, put into this process furnace, treat that temperature is raised to 750 ℃ after, be incubated 20 minutes.The blank and the mould that heat are taken out simultaneously, push on universal hydraulic testing machine rapidly then, the blank that extruding is come out carries out carrying out the 2nd extruding after the surface treatment again, can obtain the micro-grain aluminium bronze alloy bulk.
Embodiment 2:
With raw material by mass percentage copper be 86.0%, aluminium is 11.0%, iron is 3.0% to be equipped with, under vacuum condition, carry out melting, make the McGill metals strand, the xantal strand carried out being placed on after ball blast, flaw detection, reconditioning are handled be heated to 850 ℃ in the process furnace, on milling train, carry out the hot rolling processing after reaching temperature, make and roll attitude McGill metals sheet material, to roll attitude McGill metals sheet material line, to cut into cross section be 9.3 * 9.3mm, length is the block blank of 100mm, blank is carried out surface finish handle, and makes smooth surface smooth.With acetone blank surface is carried out surface cleaning, blank is placed on the clean stainless steel pallet, preheating is 20 minutes under 90 ℃ temperature, adopt the method for brushing at blank surface coated graphite lubricant then, coating is wanted evenly, coating back blank dry 15 minutes under 80 ℃ temperature, as if occurring falling to being coated with, cut, defective such as peeling off, should carry out coating or flush away recoat.Is that 90 degree moulds carry out surface and die cavity and clean with acetone to the extruding angle, and preheating is 45 minutes under 120 ℃ temperature, coated graphite lubricant then, and coating is even.
The mould that coats oildag is placed in 500 ℃ the process furnace and heats, reached after the temperature insulation 1 hour; The another one process furnace is heated to 800 ℃, ready blank is placed on the asbestos tile, put into this process furnace, treat that temperature is raised to 800 ℃ after, be incubated 20 minutes.The blank and the mould that heat are taken out simultaneously, push on universal hydraulic testing machine rapidly then, the blank that extruding is come out carries out carrying out the 2nd extruding after the surface treatment again, can obtain the micro-grain aluminium bronze alloy bulk.
Embodiment 3:
With raw material by mass percentage copper be 87.0%, aluminium is 10.0%, iron is 3.0% to be equipped with, under vacuum condition, carry out melting, make the McGill metals strand, the xantal strand carried out being placed on after ball blast, flaw detection, reconditioning are handled be heated to 900 ℃ in the process furnace, on milling train, carry out the hot rolling processing after reaching temperature, make and roll attitude McGill metals sheet material, to roll attitude McGill metals sheet material line, to cut into cross section be 9.3 * 9.3mm, length is the block blank of 100mm, blank is carried out surface finish handle, and makes smooth surface smooth.With acetone blank surface is carried out surface cleaning, blank is placed on the clean stainless steel pallet, preheating is 20 minutes under 90 ℃ temperature, adopt the method for brushing at blank surface coated graphite lubricant then, coating is wanted evenly, coating back blank dry 15 minutes under 80 ℃ temperature, as if occurring falling to being coated with, cut, defective such as peeling off, should carry out coating or flush away recoat.Is that 90 degree moulds carry out surface and die cavity and clean with acetone to the extruding angle, and preheating is 45 minutes under 120 ℃ temperature, coated graphite lubricant then, and coating is even.
The mould that coats oildag is placed in 500 ℃ the process furnace and heats, reached after the temperature insulation 1 hour; The another one process furnace is heated to 850 ℃, ready blank is placed on the asbestos tile, put into this process furnace, treat that temperature is raised to 850 ℃ after, be incubated 20 minutes.The blank and the mould that heat are taken out simultaneously, push on universal hydraulic testing machine rapidly then, the blank that extruding is come out carries out carrying out the 2nd extruding after the surface treatment again, can obtain the micro-grain aluminium bronze alloy bulk.
Claims (1)
1, a kind of preparation method of micro-grain aluminium bronze alloy, it is characterized in that: adopt the rolling method that combines with the equal channel angular extruding, with raw material by mass percentage copper be 82.7～87.0%, aluminium is 10.0～13.0%, iron is 3.0～4.3% to be equipped with, under vacuum condition, carry out melting, make the McGill metals strand, post-heating to 750～900 are handled in the reconditioning of McGill metals strand ℃ carries out hot rolling and handles, make and roll attitude McGill metals sheet material, again sheet material is cut into block blank, blank is carried out surface finish handle, make smooth surface smooth, with acetone blank surface is cleaned, preheating is 15～25 minutes under 80～110 ℃ temperature, evenly applies glass protecting lubricant in blank surface then, coat-thickness is 0.2～0.4mm, and dried under 70～100 ℃ temperature 10～15 minutes blank coating back; Employing squeezing passage angle is 90～120 ° a equal channel angular extrusion die, with acetone mould is carried out surface and die cavity cleaning, at the even coated graphite lubricant after 40～50 minutes of preheating under 120 ℃ the temperature, then mould is placed in 500 ℃ the process furnace heating and is incubated 1～1.5 hour, the another one process furnace is heated to 700 ℃～850 ℃, ready blank is put into this process furnace heating and is incubated 15～30 minutes, then blank and the mould that heats taken out simultaneously, and rapidly blank is put into mould, on universal hydraulic testing machine, blank is pushed, the blank that squeezes out is carried out surface treatment and coating glass lubricant, mold cavity coated graphite lubricant, carry out the 2nd extruding again, promptly obtain the micro-grain aluminium bronze alloy bulk, its microcosmic average grain size is 0.4～0.8 μ m.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB200510111811XA CN1330782C (en) | 2005-12-22 | 2005-12-22 | Method for preparing micro-grain aluminium bronze alloy |
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| CNB200510111811XA CN1330782C (en) | 2005-12-22 | 2005-12-22 | Method for preparing micro-grain aluminium bronze alloy |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101307419B (en) * | 2008-05-29 | 2010-06-23 | 燕山大学 | Grain refining method of aluminium bronze |
| CN102162079A (en) * | 2011-03-30 | 2011-08-24 | 北京矿冶研究总院 | Low-oxygen-content high-yield spherical aluminum bronze alloy powder for thermal spraying and preparation method thereof |
| CN104388749A (en) * | 2014-12-17 | 2015-03-04 | 湖南科技大学 | High-strength antifriction and wearable aluminum-manganese bronze alloy |
| CN104451244A (en) * | 2014-12-17 | 2015-03-25 | 湖南科技大学 | High-performance antifriction and antiwear manganese-aluminum-bronze alloy |
| CN105478507A (en) * | 2016-01-25 | 2016-04-13 | 江西省科学院应用物理研究所 | Method for preparing dispersion strengthened copper-based composites through equal channel angular pressing (ECAP) |
| CN106916993A (en) * | 2015-12-28 | 2017-07-04 | 北京有色金属研究总院 | A kind of low-temperature high-strength high-ductility abrasion-proof aluminium bronze and preparation method thereof |
| CN112831686A (en) * | 2021-01-07 | 2021-05-25 | 宁波金田铜业(集团)股份有限公司 | Preparation method of high-strength high-conductivity copper-chromium-zirconium bar |
| CN114318052A (en) * | 2021-12-16 | 2022-04-12 | 镇江市镇特合金材料有限公司 | High-wear-resistance copper alloy for roller and preparation method thereof |
Families Citing this family (1)
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| CN103882254B (en) * | 2014-04-14 | 2015-10-28 | 海门市江滨永久铜管有限公司 | Have the xantal continuous casting tubing and production method thereof of high strength, high ductility concurrently |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010047838A1 (en) * | 2000-03-28 | 2001-12-06 | Segal Vladimir M. | Methods of forming aluminum-comprising physical vapor deposition targets; sputtered films; and target constructions |
| CN1224473C (en) * | 2003-10-16 | 2005-10-26 | 上海交通大学 | Micron fine-grained titanium-nickel-copper alloy block constant-diameter corner extrusion preparation method |
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2005
- 2005-12-22 CN CNB200510111811XA patent/CN1330782C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101307419B (en) * | 2008-05-29 | 2010-06-23 | 燕山大学 | Grain refining method of aluminium bronze |
| CN102162079A (en) * | 2011-03-30 | 2011-08-24 | 北京矿冶研究总院 | Low-oxygen-content high-yield spherical aluminum bronze alloy powder for thermal spraying and preparation method thereof |
| CN104388749A (en) * | 2014-12-17 | 2015-03-04 | 湖南科技大学 | High-strength antifriction and wearable aluminum-manganese bronze alloy |
| CN104451244A (en) * | 2014-12-17 | 2015-03-25 | 湖南科技大学 | High-performance antifriction and antiwear manganese-aluminum-bronze alloy |
| CN104451244B (en) * | 2014-12-17 | 2016-08-17 | 湖南科技大学 | A kind of high-performance anti-friction wear-resistant Mn-Al-Ni bronze alloy |
| CN106916993A (en) * | 2015-12-28 | 2017-07-04 | 北京有色金属研究总院 | A kind of low-temperature high-strength high-ductility abrasion-proof aluminium bronze and preparation method thereof |
| CN105478507A (en) * | 2016-01-25 | 2016-04-13 | 江西省科学院应用物理研究所 | Method for preparing dispersion strengthened copper-based composites through equal channel angular pressing (ECAP) |
| CN112831686A (en) * | 2021-01-07 | 2021-05-25 | 宁波金田铜业(集团)股份有限公司 | Preparation method of high-strength high-conductivity copper-chromium-zirconium bar |
| CN112831686B (en) * | 2021-01-07 | 2022-03-11 | 宁波金田铜业(集团)股份有限公司 | Preparation method of high-strength high-conductivity copper-chromium-zirconium bar |
| CN114318052A (en) * | 2021-12-16 | 2022-04-12 | 镇江市镇特合金材料有限公司 | High-wear-resistance copper alloy for roller and preparation method thereof |
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