CN101745793A - Method for producing irregular-section composite pipe - Google Patents
Method for producing irregular-section composite pipe Download PDFInfo
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- CN101745793A CN101745793A CN200810227588A CN200810227588A CN101745793A CN 101745793 A CN101745793 A CN 101745793A CN 200810227588 A CN200810227588 A CN 200810227588A CN 200810227588 A CN200810227588 A CN 200810227588A CN 101745793 A CN101745793 A CN 101745793A
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Abstract
The invention discloses a method for producing irregular-section composite pipes, belonging to the technical field of metal composite materials. The method comprises the following steps: an irregular-section aluminum pipe is extruded and formed, the surface of the inner hole of the irregular-section aluminum pipe is modified, the external surface of a stainless steel pipe is modified, the surface-modified stainless steel pipe is inserted into the inner-hole-surface-modified irregular-section aluminum pipe, the assembling end parts of the stainless steel pipe and the irregular-section aluminum pipe are sealed after the assembling is completed, and the welded part of the irregular-section aluminum pipe and the stainless steel pipe is put into a hot isostatic pressure furnace for heat treatment to obtain an irregular-section composite pipe. The irregular-section composite pipes produced through the invention have the advantages that the weight is light, the strength is high, the thermal expansion efficiency is high, the interfacial metallurgical bonding ratio is close to 100 percent, the interfacial heat exchange coefficient is high, the bonding strength is high, the service life in severe cold-and-hot-alternation environment and the like, can be used in heat pipe systems which are key technical hardware of aircrafts, aerospacecrafts and other spacecrafts, and can be widely used in fields such as power, electronics, ships, nuclear energy and the like.
Description
Technical field
The invention belongs to the metallic composite technical field, particularly a kind of preparation method of irregular-section composite pipe.
Background technology
Consider that based on intensity, aspect such as anticorrosive profiled-cross-section composite heat pipe shell (the circulation pipeline and the reservoir vessel of working media) is selected stainless steel for use.And the hot junction of heat pipe and cold junction are heat collection and distribute the position, based on the consideration of heat transfer property and weight, select light weight, good heat-transfer, aluminum alloy material that specific heat capacity is big for use.In the actual use, the heat flow density at stainless steel tube and aluminium alloy interface can reach several watts every square centimeter.At present, the composite heat pipe for preparing with the mechanical bond or the methods such as thermal grease conduction, heat-conducting glue of filling is bigger in junction, interface thermal resistance, can not satisfy the heat transfer property needs.Common soldering processes also are difficult to realize the large tracts of land metallurgical binding of stainless steel tube and aluminium alloy, also do not reach the purpose of efficient heat transfer.
Summary of the invention
The preparation method who the purpose of this invention is to provide a kind of irregular-section composite pipe.
A kind of preparation method of irregular-section composite pipe is characterized in that, this method step is as follows,
(1) profiled-cross-section aluminum pipe extrusion modling: aluminium is made the bar extruder recipient of packing into, and 400～500 ℃ of bar preheat temperatures are carried out heat extrusion forming;
(2) profiled-cross-section aluminum pipe bore area modification: adopt electroless plating technology, plate the thick coating of one deck 5～10 μ m at the aluminium alloy bore area;
(3) stainless steel tube outer surface modification: adopt chemical plating or electroplating technology to plate the thick coating of one deck 10～20 μ m on its surface;
(4) assembling, welding: the profiled-cross-section aluminum pipe that the stainless steel tube after the surface modification is inserted the bore area modification, the two fit-up gap is 20～100 μ m, adopt vacuum brazing or vacuum electron beam solder technology that the two assembling end is sealed after assembling is finished, vacuum is less than 5.0Pa;
(5) hip treatment: profiled-cross-section aluminum pipe and stainless steel tube group welding piece are put into the high temperature insostatic pressing (HIP) stove and are heat-treated, and 350～650 ℃ of specification of heat treatment temperature, pressure 50～250MPa, temperature retention time 20～240min obtain irregular-section composite pipe.
Described aluminium is fine aluminium, wrought aluminium alloy or rust-preventing aluminum alloy.
The chemical plating coating of described profiled-cross-section aluminum pipe bore area modification is that one or more of nickel, copper, silver, gold, tin, lead or leypewter coating are compound.
The chemical plating of described stainless steel tube outer surface modification or plated metal coating are that one or more of copper, nickel, tin, zinc, silver, gold, lead or leypewter coating are compound.
The used solder of described vacuum brazing is aluminium base, auri or silver matrix brazing filler metal, and molten, the flow point scope of solder are 500～650 ℃.
Beneficial effect of the present invention is: the irregular-section composite pipe of the present invention's preparation has lightweight, high-strength, efficient expansion heat, metallurgical interface near 100% is in conjunction with rate, higher interface heat exchange coefficient, bond strength and the characteristics of under abominable alternating hot and cold environment, growing such as service life, well solved mechanical drawing, the methods such as thermal grease conduction, heat-conducting glue and common soldering of filling can not prepare lightweight, high-strength, an efficient technology difficult problem that expands heat, profiled-cross-section multiple tube.Technology of the present invention also has a wide range of applications in fields such as electric power, electronics, boats and ships, nuclear energy except that being applied to spacecraft thermal control key technology hardware-hot-pipe systems such as Aeronautics and Astronautics.
Description of drawings
Fig. 1 is preparation method's flow chart of irregular-section composite pipe;
Fig. 2 is the irregular-section composite pipe structural representation;
Number in the figure:
1-profiled-cross-section aluminum pipe; The 2-stainless steel tube; 3-aluminum pipe-stainless steel tube two ends solder up;
The 4-irregular-section composite pipe.
The specific embodiment
The invention provides a kind of preparation method of irregular-section composite pipe, its preparation method flow chart as shown in Figure 1, Fig. 2 is the irregular-section composite pipe structural representation, the invention will be further described below in conjunction with embodiment and accompanying drawing:
Embodiment 1
A kind of preparation method of irregular-section composite pipe, this method step is as follows,
(1) profiled-cross-section aluminum pipe 1 extrusion modling: fine aluminium is made the bar extruder recipient of packing into, and 450 ℃ of bar preheat temperatures are carried out heat extrusion forming;
(2) profiled-cross-section aluminum pipe 1 bore area modification: adopt electroless plating technology, plate the thick nickel dam of one deck 5～10 μ m at the aluminium alloy bore area.
(3) stainless steel tube 2 outer surface modifications: adopt electroplating technology to plate the nickel dam of one deck 10～20 μ m at the stainless steel tube outer surface;
(4) assembling, welding: the profiled-cross-section aluminum pipe that the stainless steel tube after the surface modification is inserted the bore area modification, stainless steel tube slightly is longer than aluminum pipe, the two fit-up gap is 50 μ m, after finishing, assembling adopts the vacuum brazing technique (aluminium base solder of paste or thread aluminium soldering, solder is molten, 550～600 ℃ of flow point scopes) the two assembling end is sealed 3, vacuum is less than 5.0Pa;
(5) hip treatment: profiled-cross-section aluminum pipe and stainless steel tube group welding piece are put into the high temperature insostatic pressing (HIP) stove and are heat-treated, and 450 ℃ of specification of heat treatment temperature, pressure 100MPa, temperature retention time 120min obtain irregular-section composite pipe 4.
The index that the irregular-section composite pipe of preparation reaches is as follows: interface recombination rate: near 100%; Interface heat exchange coefficient: greater than 10W/cm
2Interface shear strength: greater than 60MPa; Thermal cycle :-70～150 ℃, under 500 conditions, the interface not damaged; The coefficient of heat transfer, boundary strength still can satisfy above-mentioned requirements.Service life: greater than 15 years.
Embodiment 2
A kind of preparation method of irregular-section composite pipe, this method step is as follows,
(1) profiled-cross-section aluminum pipe 1 extrusion modling: wrought aluminium alloy is made the bar extruder recipient of packing into, and 470 ℃ of bar preheat temperatures are carried out heat extrusion forming;
(2) profiled-cross-section aluminum pipe 1 bore area modification: adopt electroless plating technology, plate the thick copper layer of one deck 5～10 μ m at the aluminium alloy bore area.
(3) stainless steel tube 2 outer surface modifications: adopt electroplating technology to plate the copper layer of one deck 10～20 μ m at the stainless steel tube outer surface;
(4) assembling, welding: the profiled-cross-section aluminum pipe that the stainless steel tube after the surface modification is inserted the bore area modification, stainless steel tube slightly is longer than aluminum pipe, the two fit-up gap is 30 μ m, after finishing, assembling adopts the vacuum brazing technique (aluminium base solder of paste or thread aluminium soldering, solder is molten, 550～600 ℃ of flow point scopes) the two assembling end is sealed 3, vacuum is less than 5.0Pa;
(5) hip treatment: profiled-cross-section aluminum pipe and stainless steel tube group welding piece are put into the high temperature insostatic pressing (HIP) stove and are heat-treated, and 450 ℃ of specification of heat treatment temperature, pressure 100MPa, temperature retention time 120min obtain irregular-section composite pipe 4.
The index that the irregular-section composite pipe of preparation reaches is as follows: interface recombination rate: near 100%; Interface heat exchange coefficient: greater than 8W/cm
2Interface shear strength: greater than 70MPa; Thermal cycle :-70～150 ℃, under 500 conditions, the interface not damaged; The coefficient of heat transfer, boundary strength still can satisfy above-mentioned requirements.Service life: greater than 15 years.
Embodiment 3
A kind of preparation method of irregular-section composite pipe, this method step is as follows,
(1) profiled-cross-section aluminum pipe 1 extrusion modling: wrought aluminium alloy is made the bar extruder recipient of packing into, and 485 ℃ of bar preheat temperatures are carried out heat extrusion forming;
(2) profiled-cross-section aluminum pipe 1 bore area modification: adopt electroless plating technology, plate the thick copper layer of one deck 5～10 μ m at the aluminium alloy bore area.
(3) stainless steel tube 2 outer surface modifications: adopt electroplating technology to plate the copper layer of one deck 10～20 μ m at the stainless steel tube outer surface;
(4) assembling, welding: the profiled-cross-section aluminum pipe that the stainless steel tube after the surface modification is inserted the bore area modification, stainless steel tube slightly is longer than aluminum pipe, the two fit-up gap is 40 μ m, adopt vacuum electron beam welding equipment that the two assembling end is sealed 3 after assembling is finished, vacuum is less than 5.0Pa;
(5) hip treatment: profiled-cross-section aluminum pipe and stainless steel tube group welding piece are put into the high temperature insostatic pressing (HIP) stove and are heat-treated, and 450 ℃ of specification of heat treatment temperature, pressure 100MPa, temperature retention time 120min obtain irregular-section composite pipe 4.
The index that the irregular-section composite pipe of preparation reaches is as follows: interface recombination rate: near 100%; Interface heat exchange coefficient: greater than 8W/cm
2Interface shear strength: greater than 70MPa; Thermal cycle :-70～150 ℃, under 500 conditions, the interface not damaged; The coefficient of heat transfer, boundary strength still can satisfy above-mentioned requirements.Service life: greater than 15 years.
Embodiment 4
A kind of preparation method of irregular-section composite pipe, this method step is as follows,
(1) profiled-cross-section aluminum pipe 1 extrusion modling: wrought aluminium alloy is made the bar extruder recipient of packing into, and 500 ℃ of bar preheat temperatures are carried out heat extrusion forming;
(2) profiled-cross-section aluminum pipe 1 bore area modification: adopt electroless plating technology, plate the thick copper layer of one deck 5～10 μ m at the aluminium alloy bore area.
(3) stainless steel tube 2 outer surface modifications: adopt electroplating technology to plate the copper layer of one deck 10～20 μ m at the stainless steel tube outer surface;
(4) assembling, welding: the profiled-cross-section aluminum pipe that the stainless steel tube after the surface modification is inserted the bore area modification, stainless steel tube slightly is longer than aluminum pipe, the two fit-up gap is 60 μ m, after finishing, assembling adopts the vacuum brazing technique (aluminium base solder of paste or thread aluminium soldering, solder is molten, 550～600 ℃ of flow point scopes) the two assembling end is sealed 3, vacuum is less than 5.0Pa;
(5) hip treatment: profiled-cross-section aluminum pipe and stainless steel tube group welding piece are put into the high temperature insostatic pressing (HIP) stove and are heat-treated, and 500 ℃ of specification of heat treatment temperature, pressure 150MPa, temperature retention time 90min obtain irregular-section composite pipe 4.
The index that the irregular-section composite pipe of preparation reaches is as follows: interface recombination rate: near 100%; Interface heat exchange coefficient: greater than 8W/cm
2Interface shear strength: greater than 70MPa; Thermal cycle :-70～150 ℃, under 500 conditions, the interface not damaged; The coefficient of heat transfer, boundary strength still can satisfy above-mentioned requirements.Service life: greater than 15 years.
Claims (5)
1. the preparation method of an irregular-section composite pipe is characterized in that, this method step is as follows,
(1) profiled-cross-section aluminum pipe extrusion modling: aluminium is made the bar extruder recipient of packing into, and 400～500 ℃ of bar preheat temperatures are carried out heat extrusion forming;
(2) profiled-cross-section aluminum pipe bore area modification: adopt electroless plating technology, plate the thick coating of one deck 5～10 μ m at the aluminium alloy bore area;
(3) stainless steel tube outer surface modification: adopt chemical plating or electroplating technology to plate the thick coating of one deck 10～20 μ m on its surface;
(4) assembling, welding: the profiled-cross-section aluminum pipe that the stainless steel tube after the surface modification is inserted the bore area modification, the two fit-up gap is 20～100 μ m, adopt vacuum brazing or vacuum electron beam solder technology that the two assembling end is sealed after assembling is finished, vacuum is less than 5.0Pa;
(5) hip treatment: profiled-cross-section aluminum pipe and stainless steel tube group welding piece are put into the high temperature insostatic pressing (HIP) stove and are heat-treated, and 350～650 ℃ of specification of heat treatment temperature, pressure 50～250MPa, temperature retention time 20～240min obtain irregular-section composite pipe.
2. the preparation method of a kind of irregular-section composite pipe according to claim 1 is characterized in that, described aluminium is fine aluminium, wrought aluminium alloy or rust-preventing aluminum alloy.
3. the preparation method of a kind of irregular-section composite pipe according to claim 1 is characterized in that, the chemical plating coating of described profiled-cross-section aluminum pipe bore area modification is that one or more of nickel, copper, silver, gold, tin, lead or leypewter coating are compound.
4. the preparation method of a kind of irregular-section composite pipe according to claim 1, it is characterized in that the chemical plating of described stainless steel tube outer surface modification or plated metal coating are that one or more of copper, nickel, tin, zinc, silver, gold, lead or leypewter coating are compound.
5. the preparation method of a kind of irregular-section composite pipe according to claim 1 is characterized in that, the used solder of described vacuum brazing is aluminium base, auri or silver matrix brazing filler metal, and molten, the flow point scope of solder are 500～650 ℃.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101947568A (en) * | 2010-09-16 | 2011-01-19 | 陕西黄河集团有限公司 | Multiple cold extrusion molding method of multi-cavity thin-shell part with non-uniform sections |
| CN102059533A (en) * | 2010-12-03 | 2011-05-18 | 宝鸡市盛科新金属有限责任公司 | Novel process of profile hole forming processing and sealing welding for metal composite product |
| CN103447770A (en) * | 2013-09-06 | 2013-12-18 | 中联重科股份有限公司 | Method for manufacturing pipe clamp, pipe clamp and pipeline |
| CN104175070A (en) * | 2014-07-21 | 2014-12-03 | 北京有色金属研究总院 | Preparation method of aluminum-stainless steel composite tube for thermal control |
| CN104227338A (en) * | 2014-07-21 | 2014-12-24 | 北京有色金属研究总院 | Preparation method for aluminum-stainless steel composite pipe for thermal control on spacecraft |
| CN104235515A (en) * | 2014-07-21 | 2014-12-24 | 北京有色金属研究总院 | Aluminum-stainless steel composite pipe for thermal control on spacecraft |
| CN104226870A (en) * | 2014-07-21 | 2014-12-24 | 北京有色金属研究总院 | Covering method for hot isostatic pressing of aluminum-stainless steel composite pipe |
| CN105436645A (en) * | 2015-12-07 | 2016-03-30 | 天津平高智能电气有限公司 | Brazing method for vacuum switch assembling |
| CN105509540A (en) * | 2015-12-21 | 2016-04-20 | 江苏格林威尔金属材料科技有限公司 | Novel steel-aluminium compound heat dissipater |
| WO2019192633A1 (en) * | 2018-04-06 | 2019-10-10 | Hermle Maschinenbau Gmbh | Method for producing a component, capsule for hot isostatic pressing and component arrangement |
| CN110788335A (en) * | 2019-11-12 | 2020-02-14 | 强莉莉 | Forming method of composite piston pin |
| CN111195763A (en) * | 2018-11-19 | 2020-05-26 | 中车唐山机车车辆有限公司 | Welding method of aluminum alloy and stainless steel for vehicle and train vehicle |
| CN112226598A (en) * | 2020-10-21 | 2021-01-15 | 浙江工业职业技术学院 | Hot isostatic pressing process for aviation special-shaped pipe casting |
-
2008
- 2008-11-28 CN CN200810227588A patent/CN101745793A/en active Pending
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101947568A (en) * | 2010-09-16 | 2011-01-19 | 陕西黄河集团有限公司 | Multiple cold extrusion molding method of multi-cavity thin-shell part with non-uniform sections |
| CN102059533A (en) * | 2010-12-03 | 2011-05-18 | 宝鸡市盛科新金属有限责任公司 | Novel process of profile hole forming processing and sealing welding for metal composite product |
| CN102059533B (en) * | 2010-12-03 | 2013-07-10 | 宝鸡市盛科新金属有限责任公司 | Novel process of profile hole forming processing and sealing welding for metal composite product |
| CN103447770B (en) * | 2013-09-06 | 2016-03-09 | 中联重科股份有限公司 | Manufacture the method for pipe clamp, pipe clamp and pipeline |
| CN103447770A (en) * | 2013-09-06 | 2013-12-18 | 中联重科股份有限公司 | Method for manufacturing pipe clamp, pipe clamp and pipeline |
| CN104175070A (en) * | 2014-07-21 | 2014-12-03 | 北京有色金属研究总院 | Preparation method of aluminum-stainless steel composite tube for thermal control |
| CN104235515A (en) * | 2014-07-21 | 2014-12-24 | 北京有色金属研究总院 | Aluminum-stainless steel composite pipe for thermal control on spacecraft |
| CN104226870A (en) * | 2014-07-21 | 2014-12-24 | 北京有色金属研究总院 | Covering method for hot isostatic pressing of aluminum-stainless steel composite pipe |
| CN104227338A (en) * | 2014-07-21 | 2014-12-24 | 北京有色金属研究总院 | Preparation method for aluminum-stainless steel composite pipe for thermal control on spacecraft |
| CN104175070B (en) * | 2014-07-21 | 2016-10-05 | 北京有色金属研究总院 | A kind of preparation method of thermal control aluminium-stainless steel composite pipe |
| CN105436645A (en) * | 2015-12-07 | 2016-03-30 | 天津平高智能电气有限公司 | Brazing method for vacuum switch assembling |
| CN105509540A (en) * | 2015-12-21 | 2016-04-20 | 江苏格林威尔金属材料科技有限公司 | Novel steel-aluminium compound heat dissipater |
| WO2019192633A1 (en) * | 2018-04-06 | 2019-10-10 | Hermle Maschinenbau Gmbh | Method for producing a component, capsule for hot isostatic pressing and component arrangement |
| CN111195763A (en) * | 2018-11-19 | 2020-05-26 | 中车唐山机车车辆有限公司 | Welding method of aluminum alloy and stainless steel for vehicle and train vehicle |
| CN110788335A (en) * | 2019-11-12 | 2020-02-14 | 强莉莉 | Forming method of composite piston pin |
| CN110788335B (en) * | 2019-11-12 | 2022-06-28 | 强莉莉 | Forming method of composite piston pin |
| CN112226598A (en) * | 2020-10-21 | 2021-01-15 | 浙江工业职业技术学院 | Hot isostatic pressing process for aviation special-shaped pipe casting |
| CN112226598B (en) * | 2020-10-21 | 2022-04-05 | 浙江工业职业技术学院 | Hot isostatic pressing process for aviation special-shaped pipe casting |
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Open date: 20100623 |