CN110172606A - A kind of preparation process of alumina dispersion-strenghtened copper compo pipe - Google Patents
A kind of preparation process of alumina dispersion-strenghtened copper compo pipe Download PDFInfo
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- CN110172606A CN110172606A CN201910503369.7A CN201910503369A CN110172606A CN 110172606 A CN110172606 A CN 110172606A CN 201910503369 A CN201910503369 A CN 201910503369A CN 110172606 A CN110172606 A CN 110172606A
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- compo pipe
- alumina dispersion
- sintering
- strenghtened
- strenghtened copper
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/001—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides
- C22C32/0015—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides with only single oxides as main non-metallic constituents
- C22C32/0021—Matrix based on noble metals, Cu or alloys thereof
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
Abstract
The invention discloses a kind of preparation processes of alumina dispersion-strenghtened copper compo pipe, belong to nonferrous metal powder metallurgical material field, concrete scheme includes preparation-cold isostatic compaction-pre-sintering-sintering-heat and other static pressuring processes of raw material, wherein the ingredient of alumina dispersion-strenghtened copper compo pipe includes aluminium oxide and copper, in terms of mass percentage, alumina content is 0.10%-10.0%, and surplus is copper.Alumina dispersion-strenghtened copper compo pipe prepared by the present invention has high-intensitive, high conductivity and excellent softening performance resistant to high temperatures.The simple process, controllability is strong, at low cost, is suitble to produce in enormous quantities.
Description
Technical field
The invention belongs to nonferrous metal powder metallurgical material fields, and in particular to it is a kind of it is high-strength, high lead, softening resistant to high temperatures
The preparation process of alumina dispersion-strenghtened copper compo pipe.
Background technique
Traditional copper alloy has good conductive and heating conduction, but its intensity especially elevated temperature strength is very poor, usually exists
300 DEG C or so just lose its most of intensity, it is difficult to which satisfaction uses under the high temperature conditions.In order to improve copper alloy intensity and
Elevated temperature strength, using the alumina particle of chemical good thermal stability come strengthened copper alloy, alumina dispersion-strenghtened copper alloy at
For current research hotspot.Due to the dispersion-strengtherning effect and good high-temperature stability of alumina particle, so that aluminium oxide is more
Dissipating copper alloy has high intensity and excellent softening power resistant to high temperatures.Intensity raising so that the deformation processing of the alloy very
Difficulty, traditional extruding, forging technology are when preparing aluminum oxide dispersion copper alloy tube, at high cost, low efficiency and yield rate is low, at
The obstacle that the oxygenerating aluminium disperse copper alloy tube that is limited is promoted and applied in high temperature applicationss.
Summary of the invention
To solve the above-mentioned problems, the present invention provides a kind of preparation process of alumina dispersion-strenghtened copper compo pipe, uses
High performance alumina dispersion-strenghtened copper compo pipe is prepared out by pre-sintering-sintering-hot isostatic pressing after cold isostatic compaction, it should
Technique be not necessarily to by squeeze, forging etc. deformation processing techniques, have operation is simple, efficient quick, low in cost etc. are many
Advantage is suitble to produce alumina dispersion-strenghtened copper compo pipe in enormous quantities.
To achieve the goals above, the invention adopts the following technical scheme:
A kind of preparation process of alumina dispersion-strenghtened copper compo pipe, comprising the following steps:
Step 1: the preparation of raw material prepares alumina dispersion-strenghtened copper alloy powder raw material, powder size 3-150um；
Step 2: forming, by step 1 preparation alumina dispersion-strenghtened copper alloy powder raw material carry out isostatic cool pressing at
Shape prepares alumina dispersion-strenghtened copper compo pipe blank；
Step 3: being pre-sintered, by the alumina dispersion-strenghtened copper compo pipe blank of step 2 preparation in certain pre-burning junction temperature
A period of time is kept the temperature under degree and pre-sintering atmosphere, is prepared compo pipe and is pre-sintered blank；
Step 4: the compo pipe of step 3 preparation is pre-sintered blank under certain sintering temperature and sintering atmosphere by sintering
Heat preservation a period of time prepares compo pipe sintering blank；
Step 5: the compo pipe sintering blank of step 4 preparation is kept the temperature one under certain temperature and pressure by hot isostatic pressing
The section time, prepare alumina dispersion-strenghtened copper compo pipe.
Further, the pressure of isostatic cool pressing is 50-250MPa in the step 2, and the dwell time is 5-1000 seconds.
Further, pre-sintering temperature is 300-1000 DEG C in the step 3, and being pre-sintered the time is 1-20 hours, pre-burning
Tying atmosphere is nitrogen and hydrogen mixed gas, argon gas and hydrogen mixed gas, vacuum or hydrogen.
Further, sintering temperature is 800-1100 DEG C in the step 4, and sintering time is 1-20 hours, sintering atmosphere
For nitrogen and hydrogen mixed gas, argon gas and hydrogen mixed gas, vacuum or hydrogen.
Further, hip temperature is 500-1000 DEG C, pressure 100-200MPa in the step 5, and the time is
1-10 hours, atmosphere was vacuum, nitrogen or argon gas.
Further, the ingredient of the alumina dispersion-strenghtened copper compo pipe includes aluminium oxide and copper, is contained with quality percentage
Meter: alumina content: 0.10%-10.0%, surplus are copper.
Further, in step 5, the prepared alumina dispersion-strenghtened copper alloy pipe outside diameter is 10-400mm, interior
Diameter is 3-350mm, length 10-1000mm.
Beneficial effects of the present invention:
The present invention use cold isostatic compaction-pre-sintering-sintering-heat and other static pressuring processes, preparation it is alumina dispersion-strenghtened
Copper alloy tube has high-intensitive, high conductivity and excellent softening performance resistant to high temperatures.The simple process, controllability is strong, cost
Low, quality is stable, is suitble to produce in enormous quantities, is easy to produce in enormous quantities, process flow is reduced, than conventional machining process save the cost
30% or more.
Specific embodiment
In order to further illustrate the present invention with reference to specific embodiments the invention will be further described, but it should reason
Solution, these embodiments only further illustrate the features and advantages of the present invention, do not constitute any limitation of the invention.Have below
The involved atomization process and oxidative deamination process for preparing alumina dispersion-strenghtened copper alloy powder raw material in body embodiment
It is the prior art.
Specific embodiment one
A kind of preparation process of alumina dispersion-strenghtened copper compo pipe, comprising the following steps:
Step 1: the preparation of raw material prepares alumina dispersion-strenghtened copper alloy using atomization process and oxidative deamination process
The formability of powder raw material, powder size 3-150um, alloy powder is good；
Step 2: forming, by step 1 preparation alumina dispersion-strenghtened copper alloy powder raw material carry out isostatic cool pressing at
Shape prepares alumina dispersion-strenghtened copper compo pipe blank；
Step 3: being pre-sintered, by the alumina dispersion-strenghtened copper compo pipe blank of step 2 preparation in certain pre-burning junction temperature
A period of time is kept the temperature under degree and pre-sintering atmosphere, is prepared compo pipe and is pre-sintered blank；
Step 4: the compo pipe of step 3 preparation is pre-sintered blank under certain sintering temperature and sintering atmosphere by sintering
Heat preservation a period of time prepares compo pipe sintering blank；
Step 5: the compo pipe sintering blank of step 4 preparation is kept the temperature one under certain temperature and pressure by hot isostatic pressing
The section time, prepare alumina dispersion-strenghtened copper compo pipe.
Further, the pressure of isostatic cool pressing is 50-250MPa in the step 2, and the dwell time is 5-1000 seconds.
Further, pre-sintering temperature is 300-1000 DEG C in the step 3, and being pre-sintered the time is 1-20 hours, pre-burning
Tying atmosphere is nitrogen and hydrogen mixed gas, argon gas and hydrogen mixed gas, vacuum or hydrogen.
Further, sintering temperature is 800-1100 DEG C in the step 4, and sintering time is 1-20 hours, sintering atmosphere
For nitrogen and hydrogen mixed gas, argon gas and hydrogen mixed gas, vacuum or hydrogen.
Further, hip temperature is 500-1000 DEG C, pressure 100-200MPa in the step 5, and the time is
1-10 hours, atmosphere was vacuum, nitrogen or argon gas.
Further, the ingredient of the alumina dispersion-strenghtened copper compo pipe includes aluminium oxide and copper, is contained with quality percentage
Meter: alumina content: 0.10%-10.0%, surplus are copper.
Further, in step 5, the prepared alumina dispersion-strenghtened copper alloy pipe outside diameter (diameter) is 10-
400mm, internal diameter (diameter) are 3-350mm, length 10-1000mm.
Embodiment 1
A kind of preparation for the dispersion strengthening copper alloy pipe that alumina content is 0.15%, alloy pipe outside diameter (diameter): 50mm,
Internal diameter (diameter): 30mm, length: 100mm.Powder mean particle sizes are used to carry out for 20um aluminum oxide dispersion copper alloy powder cold etc.
Static pressure forming, isostatic cool pressing pressure are 100MPa, and the dwell time is 50 seconds, prepare alumina dispersion-strenghtened copper alloy pipe stock
Part；Pipe part is pre-sintered, pre-sintering temperature is 500 DEG C, and being pre-sintered the time is 2 hours, and pre-sintering atmosphere is hydrogen, system
Standby compo pipe out is pre-sintered blank；Compo pipe pre-sintering blank is sintered, sintering temperature is 1000 DEG C, sintering time are as follows: 2
Hour, sintering atmosphere is vacuum, prepares compo pipe sintering blank.Sintered compo pipe blank is carried out at hot isostatic pressing
Reason, hip temperature are 800 DEG C, pressure 100MPa, and the time is 1 hour, and atmosphere is argon gas, and it is strong to prepare aluminum oxide dispersion
Change copper alloy tube.The alumina dispersion-strenghtened copper compo pipe consistency is 99.1%, conductivity 85%IACS, softening after measured
Temperature is 850 DEG C.
Embodiment 2
A kind of preparation for the dispersion strengthening copper alloy pipe that alumina content is 0.30%, alloy pipe outside diameter (diameter):
100mm, internal diameter (diameter): 50mm, length: 300mm.Use powder mean particle sizes for 50um aluminum oxide dispersion copper alloy powder into
Row cold isostatic compaction, isostatic cool pressing pressure are 120MPa, and the dwell time is 60 seconds, prepare alumina dispersion-strenghtened copper alloy
Pipe part；Alumina dispersion-strenghtened copper compo pipe blank is pre-sintered, pre-sintering temperature is 600 DEG C, and being pre-sintered the time is 3
Hour, pre-sintering atmosphere is hydrogen, prepares compo pipe and is pre-sintered blank.Compo pipe pre-sintering blank is sintered, is sintered
Temperature is 1020 DEG C, sintering time are as follows: 3 hours, sintering atmosphere was vacuum, prepared compo pipe sintering blank.It will be sintered
Compo pipe blank carries out hip treatment, and hip temperature is 900 DEG C, pressure 120MPa, and the time is 2 hours, atmosphere
For argon gas, alumina dispersion-strenghtened copper compo pipe is prepared.The alumina dispersion-strenghtened copper compo pipe consistency is after measured
99.0%, conductivity 80%IACS, softening temperature are 880 DEG C.
Embodiment 3
A kind of preparation for the dispersion strengthening copper alloy pipe that alumina content is 0.60%, alloy pipe outside diameter (diameter):
150mm, internal diameter (diameter): 60mm, length: 500mm.Use powder mean particle sizes for 80um aluminum oxide dispersion copper alloy powder into
Row cold isostatic compaction, isostatic cool pressing pressure are 130MPa, and the dwell time is 80 seconds, prepare alumina dispersion-strenghtened copper alloy
Pipe part.Alumina dispersion-strenghtened copper compo pipe blank is pre-sintered, pre-sintering temperature is 800 DEG C, and being pre-sintered the time is 5
Hour, pre-sintering atmosphere is hydrogen, prepares compo pipe and is pre-sintered blank.Compo pipe pre-sintering blank is sintered, is sintered
Temperature is 1050 DEG C, sintering time are as follows: 5 hours, sintering atmosphere was vacuum, prepared compo pipe sintering blank.It will be sintered
Compo pipe blank carries out hip treatment, and hip temperature is 950 DEG C, pressure 130MPa, and the time is 3 hours, atmosphere
For argon gas, alumina dispersion-strenghtened copper compo pipe is prepared.The alumina dispersion-strenghtened copper compo pipe consistency is after measured
99.0%, conductivity 76%IACS, softening temperature are 920 DEG C.
Embodiment 4
A kind of preparation for the dispersion strengthening copper alloy pipe that alumina content is 5.0%, alloy pipe outside diameter (diameter): 150mm,
Internal diameter (diameter): 60mm, length: 500mm.Powder mean particle sizes are used to carry out for 100um aluminum oxide dispersion copper alloy powder cold
Hydrostatic pressing, isostatic cool pressing pressure are 150MPa, and the dwell time is 100 seconds, prepare alumina dispersion-strenghtened copper compo pipe
Blank.Alumina dispersion-strenghtened copper compo pipe blank is pre-sintered, pre-sintering temperature is 830 DEG C, and being pre-sintered the time is 6 small
When, pre-sintering atmosphere is hydrogen, prepares compo pipe and is pre-sintered blank.Compo pipe pre-sintering blank is sintered, sintering temperature
Degree is 1060 DEG C, sintering time are as follows: 6 hours, sintering atmosphere was vacuum, prepared compo pipe sintering blank.By sintered conjunction
Golden pipe part carries out hip treatment, and hip temperature is 980 DEG C, pressure 150MPa, and the time is 5 hours, and atmosphere is
Argon gas prepares alumina dispersion-strenghtened copper compo pipe.The alumina dispersion-strenghtened copper compo pipe consistency is after measured
99.0%, conductivity 60%IACS, softening temperature are 950 DEG C.
Aluminum oxide dispersion copper alloy is in situ generated the equally distributed aluminium oxide ceramics phase of disperse in Copper substrate, is one
The ceramic reinforced composite of the difficult deformation of kind, the deformation processing of the material is very difficult, prepared by traditional extruding, forging technology
When aluminum oxide dispersion copper alloy tube, at high cost, low efficiency and yield rate is low becomes limitation aluminum oxide dispersion copper alloy tube in high temperature
The obstacle that occasion promotes and applies.The present invention provides a kind of preparation process of alumina dispersion-strenghtened copper compo pipe, the technique without
Need to have that operation is simple by the deformation processing techniques such as squeezing, forge, efficient quick, it is low in cost many advantages, such as, fit
It closes and produces alumina dispersion-strenghtened copper compo pipe in enormous quantities.Technology of the invention solves alumina dispersion-strenghtened copper alloy
The preparation problem of pipe.
Claims (7)
1. a kind of preparation process of alumina dispersion-strenghtened copper compo pipe, which comprises the following steps:
Step 1: the preparation of raw material prepares alumina dispersion-strenghtened copper alloy powder raw material, powder size 3-150um；
Step 2: the alumina dispersion-strenghtened copper alloy powder raw material of step 1 preparation is carried out cold isostatic compaction, system by forming
Standby alumina dispersion-strenghtened copper compo pipe blank out；
Step 3: being pre-sintered, by the alumina dispersion-strenghtened copper compo pipe blank of step 2 preparation in certain pre-sintering temperature and
A period of time is kept the temperature under pre-sintering atmosphere, is prepared compo pipe and is pre-sintered blank；
Step 4: the compo pipe of step 3 preparation is pre-sintered blank and kept the temperature under certain sintering temperature and sintering atmosphere by sintering
For a period of time, compo pipe sintering blank is prepared；
Step 5: hot isostatic pressing, when the compo pipe sintering blank of step 4 preparation is kept the temperature one section under certain temperature and pressure
Between, prepare alumina dispersion-strenghtened copper compo pipe.
2. a kind of preparation process of alumina dispersion-strenghtened copper compo pipe according to claim 1, it is characterised in that: described
The pressure of isostatic cool pressing is 50-250MPa in step 2, and the dwell time is 5-1000 seconds.
3. a kind of preparation process of alumina dispersion-strenghtened copper compo pipe according to claim 1, it is characterised in that: described
Pre-sintering temperature is 300-1000 DEG C in step 3, and being pre-sintered the time is 1-20 hours, and pre-sintering atmosphere is that nitrogen and hydrogen are mixed
Close gas, argon gas and hydrogen mixed gas, vacuum or hydrogen.
4. a kind of preparation process of alumina dispersion-strenghtened copper compo pipe according to claim 1, it is characterised in that: described
Sintering temperature is 800-1100 DEG C in step 4, and sintering time is 1-20 hours, and sintering atmosphere is nitrogen and hydrogen mixed gas, argon
Gas and hydrogen mixed gas, vacuum or hydrogen.
5. a kind of preparation process of alumina dispersion-strenghtened copper compo pipe according to claim 1, it is characterised in that: described
In step 5 hip temperature be 500-1000 DEG C, pressure 100-200MPa, the time be 1-10 hour, atmosphere be vacuum,
Nitrogen or argon gas.
6. a kind of preparation process of alumina dispersion-strenghtened copper compo pipe according to claim 1, it is characterised in that: described
The ingredient of alumina dispersion-strenghtened copper compo pipe includes aluminium oxide and copper, in terms of mass percentage: alumina content:
0.10%-10.0%, surplus are copper.
7. a kind of preparation process of alumina dispersion-strenghtened copper compo pipe according to claim 1, it is characterised in that: step
In five, the prepared alumina dispersion-strenghtened copper alloy pipe outside diameter is 10-400mm, internal diameter 3-350mm, length 10-
1000mm。
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111185658A (en) * | 2020-01-14 | 2020-05-22 | 广东省材料与加工研究所 | Welding method of aluminum oxide copper and steel and application thereof |
| CN112355078A (en) * | 2020-10-26 | 2021-02-12 | 有研工程技术研究院有限公司 | Aluminum oxide dispersion strengthened copper alloy pipe and preparation method and application thereof |
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| CN101240382A (en) * | 2007-02-05 | 2008-08-13 | 中南大学 | Method for preparing high dense TiAl-base alloy |
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| CN111185658A (en) * | 2020-01-14 | 2020-05-22 | 广东省材料与加工研究所 | Welding method of aluminum oxide copper and steel and application thereof |
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Application publication date: 20190827 |