CN105081257A - Composite aluminum alloy pipe - Google Patents
Composite aluminum alloy pipe Download PDFInfo
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- CN105081257A CN105081257A CN201510472985.2A CN201510472985A CN105081257A CN 105081257 A CN105081257 A CN 105081257A CN 201510472985 A CN201510472985 A CN 201510472985A CN 105081257 A CN105081257 A CN 105081257A
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- aluminum alloy
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Abstract
The invention discloses a composite aluminum alloy pipe comprising a base material layer and a reinforcing layer. The reinforcing layer is arranged on the outer side, and the base material layer is arranged on the inner side. The base material layer is made of cast aluminum alloy. The reinforcing layer mainly comprises 85%-95% of silicon carbide powder and 5%-15% of chromium powder. The composite aluminum alloy pipe is manufactured through a centrifugal casting technology. According to the composite aluminum alloy pipe, the materials of the aluminum alloy pipe are reasonable, and the manufacturing cost is appropriate; by the adoption of the centrifugal casting technology, the reinforcing layer can be evenly and stably attached to the outer surface of the base material layer, and the formed aluminum alloy pipe is high in forming quality and stable in performance and has outstanding wear resistance; the durability of the aluminum alloy pipe is effectively improved, and the application fields of the aluminum alloy pipe are widened.
Description
Technical field
The present invention relates to a kind of aluminium alloy pipe, particularly relate to a kind of anti-wear performance and the exsertile composite type aluminum alloy tubing of usability, belong to Al-alloy products technical field.
Background technology
Aluminium alloy pipe is the one of nonferrous metal tube, and it is through the tubular metal material of the processes one-tenth such as extruding, drawing along its longitudinal total length hollow by aluminium alloy extrusions.Aluminium alloy pipe can have one or more closed through hole, and wall thickness, cross-sectional uniformity are consistent, can be divided into: square tube, pipe, pattern pipe, shape tube etc. by profile; Can be divided into by fashion of extrusion: seamless aluminium tubing and common extruded tube; Can be divided into by precision: common aluminum pipe and accurate aluminum pipe, wherein accurate aluminum pipe generally needs to reprocess after extrusion, as cold drawn essence is taken out; Can be divided into by rolling thickness: common aluminum pipe and thin-wall aluminium pipe.Due to aluminium alloy pipe have density is little, quality is light, intensity is high and excellent thermal conductivity, solderability, can forge, the performance such as low resistive and machined, aluminium alloy pipe is widely used in all trades and professions, as: automobile, steamer, space flight, aviation, electrical equipment, agricultural, electromechanics, household etc.Aluminium alloy pipe is ubiquitous in our life, has replaced iron and steel, copper material, timber and plastics in a lot of occasion, becomes a kind of important basic material of human society.
In order to improve wearability and the service life of aluminium alloy pipe, people take kinds of processes and carry out surface strength to aluminium alloy pipe, as: thermal spraying, physics, chemical vapour deposition (CVD), compound electric plating method, laser cladding etc.Above-mentioned technique can form strengthening layer on aluminium alloy pipe surface, and to improve its anti-wear performance, but the performance level of its strengthening layer is uneven, surface quality is not high, and high expensive, and therefore, the surface intensified technique of aluminium alloy pipe need research and development further and perfect.
Summary of the invention
For the demand, the invention provides a kind of composite type aluminum alloy tubing, the preparation of this aluminium-alloy pipe material component rationally, moderate cost, unique centrifugal casting technique is adopted to be prepared, strengthening layer in obtained aluminium alloy pipe and substrate layer binding ability excellent, serviceability is stablized, and the anti-wear performance that strengthening layer is given prominence to can give aluminium alloy pipe more lasting durability.
The present invention is a kind of composite type aluminum alloy tubing, this aluminium alloy pipe comprises substrate layer and strengthening layer, strengthening layer outside, substrate layer is interior, the material of described substrate layer is Birmasil, main component and the percentage composition proportioning of described strengthening layer are: silicon carbide powder 85%-95%, chromium powder 5%-15%, and described composite type aluminum alloy tubing adopts centrifugal casting technique to be prepared.
In a preferred embodiment of the present invention, described substrate layer aluminium silicon system Birmasil, silicone content controls at 8%-10%.
In a preferred embodiment of the present invention, main component and the percentage composition proportioning of described strengthening layer are: silicon carbide powder 88%-92%, chromium powder 8%-12%.
In a preferred embodiment of the present invention, the average particulate diameter of described silicon carbide powder is 1.5-1.8um.
In a preferred embodiment of the present invention, the average particulate diameter of described chromium powder is 80-90nm.
In a preferred embodiment of the present invention, the outside dimension of described aluminium alloy pipe is 120-160mm, and internal diameter size is 100-130mm.
In a preferred embodiment of the present invention, the molding thickness of described strengthening layer is about 1-2mm.
Present invention is disclosed a kind of composite type aluminum alloy tubing, this aluminium alloy pipe selection is reasonable, preparation cost is moderate, the outer surface being attached to substrate layer that the centrifugal casting technique adopted can make strengthening layer even and stable, aluminium alloy pipe Forming Quality is high, and serviceability is stablized, and has outstanding anti-wear performance, effectively improve the durability of aluminium alloy pipe, make its application more broad.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation:
Fig. 1 is the structural representation of embodiment of the present invention composite type aluminum alloy tubing;
In accompanying drawing, the mark of each parts is as follows: 1, substrate layer, and 2, strengthening layer.
Detailed description of the invention
Below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.
Fig. 1 is the structural representation of embodiment of the present invention composite type aluminum alloy tubing; This aluminium alloy pipe comprises substrate layer 1 and strengthening layer 2, strengthening layer 2 outside, substrate layer 1 is interior, the material of described substrate layer 1 is Birmasil, main component and the percentage composition proportioning of described strengthening layer 2 are: silicon carbide powder 85%-95%, chromium powder 5%-15%, and described composite type aluminum alloy tubing adopts centrifugal casting technique to be prepared.
In the composite type aluminum alloy tubing that the present invention mentions, substrate layer 1 aluminium silicon system Birmasil, silicone content controls at 8%-10%; Main component and the percentage composition proportioning of strengthening layer 2 are: silicon carbide powder 88%-92%, chromium powder 8%-12%; The average particulate diameter of silicon carbide powder is 1.5-1.8um; The average particulate diameter of chromium powder is 80-90nm; The outside dimension of aluminium alloy pipe is 120-160mm, and internal diameter size is 100-130mm, and the molding thickness of its strengthening layer 2 is about 1-2mm.
The concrete preparation method of the composite type aluminum alloy tubing that the present invention mentions is as follows:
A) selection is got the raw materials ready, and aluminium alloy pipe prepared by the present invention is made up of substrate layer and strengthening layer, substrate layer raw material choose aluminium silicon system Birmasil, and silicone content controls at 8%-10%; Strengthening layer raw material main component and percentage composition proportioning are: silicon carbide powder 89%, chromium powder 11%, and the average particulate diameter of silicon carbide powder is 1.5-1.8um; The average particulate diameter of chromium powder is 80-90nm;
B) prepare strengthening layer, preparation process is as follows: first, carries out the pre-heat treatment to strengthening layer raw material, and preheat temperature controls at 200 DEG C-220 DEG C; Then, open centrifugal casting mould machine, the rotating speed of pipe die controls at 1000-1050r/min, idle running 2-3 minute; Finally, be added in the pipe die of high-speed rotation by strengthening layer raw material, pipe die continues rotation 25 minutes, forms prefabricated strengthening layer;
C) pour into a mould substrate layer, casting process is as follows: first, melting substrate layer raw material, the present embodiment substrate layer raw material choose AlSi12D, and melt temperature controls at 700 DEG C-720 DEG C, and time controling is within 2 hours; Then, open the centrifugal casting mould machine with prefabricated strengthening layer, the rotating speed of pipe die is promoted to 1050-1100r/min, and pipe die temperature controls at about 300 DEG C, idle running 1-2 minute; Finally, implement cast, pouring temperature controls at 690 DEG C-710 DEG C, and poring rate controls at 1.5-1.7kg/s, and after casting complete, pipe die continues to rotate 4-5 minute, makes substrate layer shaping; Control at 180-190mm by the outside dimension of the aluminium alloy pipe obtained by above-mentioned technique, internal diameter size controls at 150-160mm, and the molding thickness of strengthening layer is about 1-1.2mm;
D) off-type process, after being taken out from pipe die by tubing blank, send in holding furnace and carry out slow cooling, cooling rate controls at 10 DEG C-12 DEG C/min, and the time is about 3 hours;
E) finished product post processing, this technique comprises the grinding process of strengthening layer and the mechanical process of substrate layer; The grinding process of strengthening layer can use the grinding tool such as abrasive band or emery wheel, and equipment can use centreless grinding machine external, and grinding wheel speed controls at 50-55m/s, and after grinding process, the surface roughness of tubing is about Ra1.6; The machined of substrate layer comprises the techniques such as turning, boring, grinding, and the surface roughness of the substrate layer after process is about Ra6.4.
Present invention is disclosed a kind of composite type aluminum alloy tubing, be characterized in: this aluminium alloy pipe selection is reasonable, preparation cost is moderate, the outer surface being attached to substrate layer that the centrifugal casting technique adopted can make strengthening layer even and stable, aluminium alloy pipe Forming Quality is high, and serviceability is stablized, and has outstanding anti-wear performance, effectively improve the durability of aluminium alloy pipe, make its application more broad.
The above; be only the specific embodiment of the present invention; but protection scope of the present invention is not limited thereto; any those of ordinary skill in the art are in the technical scope disclosed by the present invention; the change can expected without creative work or replacement, all should be encompassed within protection scope of the present invention.Therefore, the protection domain that protection scope of the present invention should limit with claims is as the criterion.
Claims (7)
1. a composite type aluminum alloy tubing, it is characterized in that, this aluminium alloy pipe comprises substrate layer and strengthening layer, strengthening layer outside, substrate layer is interior, the material of described substrate layer is Birmasil, and main component and the percentage composition proportioning of described strengthening layer are: silicon carbide powder 85%-95%, chromium powder 5%-15%, and described composite type aluminum alloy tubing adopts centrifugal casting technique to be prepared.
2. composite type aluminum alloy tubing according to claim 1, is characterized in that, described substrate layer aluminium silicon system Birmasil, silicone content controls at 8%-10%.
3. composite type aluminum alloy tubing according to claim 1, is characterized in that, main component and the percentage composition proportioning of described strengthening layer are: silicon carbide powder 88%-92%, chromium powder 8%-12%.
4. composite type aluminum alloy tubing according to claim 1, is characterized in that, the average particulate diameter of described silicon carbide powder is 1.5-1.8um.
5. composite type aluminum alloy tubing according to claim 1, is characterized in that, the average particulate diameter of described chromium powder is 80-90nm.
6. composite type aluminum alloy tubing according to claim 1, is characterized in that, the outside dimension of described aluminium alloy pipe is 120-160mm, and internal diameter size is 100-130mm.
7. composite type aluminum alloy tubing according to claim 1, is characterized in that, the molding thickness of described strengthening layer is about 1-2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510472985.2A CN105081257A (en) | 2015-08-05 | 2015-08-05 | Composite aluminum alloy pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510472985.2A CN105081257A (en) | 2015-08-05 | 2015-08-05 | Composite aluminum alloy pipe |
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| CN105081257A true CN105081257A (en) | 2015-11-25 |
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| CN201510472985.2A Pending CN105081257A (en) | 2015-08-05 | 2015-08-05 | Composite aluminum alloy pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112589064A (en) * | 2020-12-07 | 2021-04-02 | 海宁萃智智能机器人有限公司 | Centrifugal pipe casting machine and process for integrally forming internal and external enamels of centrifugal cast pipe |
Citations (6)
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| JPS586765A (en) * | 1981-07-02 | 1983-01-14 | Kubota Ltd | Centrifugal casting method |
| JPH11277210A (en) * | 1998-01-16 | 1999-10-12 | Pechiney Electrometall | Powder product for protection of casting mold for centrifugal casting of cast iron pipe and production of this powder product |
| CN2476371Y (en) * | 2001-04-13 | 2002-02-13 | 中国科学院金属研究所 | Compound pipe with internal-external layer simultaneous reinforced granular intensified aluminium alloy base gradient structure |
| CN101554651A (en) * | 2009-05-07 | 2009-10-14 | 扬州巨业耐磨复合材料有限责任公司 | Method for producing multi-metal wear-resistant steel pipe |
| CN101670426A (en) * | 2009-10-16 | 2010-03-17 | 西安建筑科技大学 | Method for preparing composite roll of strengthened ductile cast iron with in-situ cladding wearing layer |
| CN101915273A (en) * | 2010-08-13 | 2010-12-15 | 新兴铸管股份有限公司 | Novel bearing ring material and production process thereof |
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2015
- 2015-08-05 CN CN201510472985.2A patent/CN105081257A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS586765A (en) * | 1981-07-02 | 1983-01-14 | Kubota Ltd | Centrifugal casting method |
| JPH11277210A (en) * | 1998-01-16 | 1999-10-12 | Pechiney Electrometall | Powder product for protection of casting mold for centrifugal casting of cast iron pipe and production of this powder product |
| CN2476371Y (en) * | 2001-04-13 | 2002-02-13 | 中国科学院金属研究所 | Compound pipe with internal-external layer simultaneous reinforced granular intensified aluminium alloy base gradient structure |
| CN101554651A (en) * | 2009-05-07 | 2009-10-14 | 扬州巨业耐磨复合材料有限责任公司 | Method for producing multi-metal wear-resistant steel pipe |
| CN101670426A (en) * | 2009-10-16 | 2010-03-17 | 西安建筑科技大学 | Method for preparing composite roll of strengthened ductile cast iron with in-situ cladding wearing layer |
| CN101915273A (en) * | 2010-08-13 | 2010-12-15 | 新兴铸管股份有限公司 | Novel bearing ring material and production process thereof |
Non-Patent Citations (1)
| Title |
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| 田芩蔚等: "复合管离心铸造工艺中的渗流传热过程", 《上海交通大学学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112589064A (en) * | 2020-12-07 | 2021-04-02 | 海宁萃智智能机器人有限公司 | Centrifugal pipe casting machine and process for integrally forming internal and external enamels of centrifugal cast pipe |
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