CN1313638A

CN1313638A - Aluminium-copper alloy workpiece and manufacture thereof and radiator therewith

Info

Publication number: CN1313638A
Application number: CN01117331A
Authority: CN
Inventors: D·科湃尔兰德; 潮田俊太; 山内辉和; 纳康弘; 山之井智明; 田崎清司
Original assignee: Showa Aluminum Corp
Current assignee: Showa Aluminum Can Corp
Priority date: 2000-03-10
Filing date: 2001-03-10
Publication date: 2001-09-19
Anticipated expiration: 2021-03-10
Also published as: KR100744271B1; KR20010091951A; CN1213477C; TW484219B; US20010030039A1

Abstract

An aluminum-copper clad member includes an aluminum-base member, a copper-base member and an insertion member made of pure aluminum or JIS A1xxx series aluminum alloy. The aluminum-base member and the copper-base member are clad via the insertion member. A heat sink includes a heat radiation portion made of aluminum-base material and provided with a plurality of tongue-like fins formed by skiving a surface layer of one side of the heat radiation portion and a thermal diffusion portion made of copper-base material and joined to the other side of the heat radiation portion via an insertion member made of pure aluminum or JIS A1xxx series aluminum alloy.

Description

Aluminium-copper alloy workpiece and basic manufacture method and radiator

The present invention relates to be applicable to for example aluminium-copper alloy workpiece of heat exchanger, heat radiator, heat pipe and radiator etc., also relate to its manufacture method simultaneously.In addition, the present invention relates to radiator, exactly, the present invention relates to be suitable for the radiator that is installed in the cooling heat radiator in the various electrical equipment.

Heat exchanger, heat radiator, heat pipe and radiator are widely used in electrical equipment, the communication apparatus and industrial circle such as transporting equipment such as automobile and aircraft for example.They not only need good heat exchange characteristics, and require in light weight, size is little.Therefore, the different aspect from material and structure has carried out various improvement to it.

From the material angle, the thermal conductivity and the heat diffusivity of copper-based material are good, but weight is defective, replace the alumina-base material very light in weight and the thermal conductivity of this material to be only second to copper, thereby are widely adopted.

In the aluminum heat exchanger that is applied to the industrial electrical equipment field, comprise and carried out various raising cooled regions and component thickness so that improve the improvement of its thermal conductivity.Yet,, be difficult to by increasing cooling zone and the further increased thermal conductivity of component thickness because this aluminum heat exchanger has carried out significant improvement aspect size, weight and characteristic.And then, be reserved as at water under the situation of operating fluid of heat pipe, exist the heat pipe characteristic of aluminum heat exchanger to become bad shortcoming owing to producing incoagulable gas therein.

From the angle of structure, in radiator, for example, the whole fin that forms in a plurality of thin plates on a heat radiation plate is so that increase the thermal radiation area.The radiator of this common employing aluminum extruded product for electrical equipment, for example to have a computer etc. of a plurality of heat releases dress very useful, can discharge the heat that is produced by heat-releasing device rapidly.In the radiator of aforementioned shapes, in order to improve thermal radiation, it is very important increasing the thermal radiation area.In order to increase thermal radiation field, need to increase the number of fin, reduce the thickness of fin, spacing of fin is diminished and increase fin height.Yet,, be difficult to produce the radiator of shape with this fin owing to the restriction of extrusion technique.

And then, because the improvement of fin function is not enough to strengthen the thermal radiation of radiator, therefore, need to improve the thermal diffusion function of the radiator substrate that contacts with heat-releasing device.The thermal diffusion function can be improved by the thickness that increases substrate.Yet, because the miniaturization that the installing space of radiator is installed the entire equipment of this radiator because of needs is restricted, the thickness that increases substrate can cause the reducing of height of fin, and then causes reducing of thermal radiation area, and the thickness that increases substrate contradicts with the weight that reduces equipment.

It is excellent and be suitable for the Solder for Al-Cu Joint Welding composite members of radiator etc. to the purpose of this invention is to provide a kind of thermal radiation.

Another object of the present invention provides a kind of method of making the Solder for Al-Cu Joint Welding composite members.

Another object of the present invention provides a kind of radiator, and this radiator can improve thermal radiation and not increase size and/or weight.

According to an aspect of the present invention, a kind of Solder for Al-Cu Joint Welding composite members, it comprises the insertion parts that the aluminium alloy of an alumina-base part, copper base member and fine aluminium or Japanese Industrial Standards' (to call " JIS " in the following text) JIS Alxxx series is made, and wherein alumina-base part and copper base member are combined with each other by described insertion parts.According to the Solder for Al-Cu Joint Welding composite members, because even alumina-base part and copper base member are by by being combined with each other also being easy to be compound to the fine aluminium on the copper base member or the insertion parts of JIS Alxxx series alloys manufacturing under the cold rolling condition, the oxidation and the mixing between the different materials of copper base member can be reduced, thereby bond strength can be provided.

The copper base member is preferably made by oxygen-free copper or through the deoxidized cooper that phosphorus is handled.In this case, can effectively prevent the generation of oxide, thereby make composite component that excellent bond strength be arranged.

In aforementioned Solder for Al-Cu Joint Welding composite component, because the weight of composite component is light and have thermal conductivity, heat diffusion properties and a corrosion resistance of copper as aluminium, so when its during as the material of heat exchanger, both can arrive thermal conductivity, compare simultaneously and increase that can maximum weight with copper radiator above aluminium.And then, can perishable part be made of the copper base member by adopting aforementioned composite component, to obtain the corrosion resisting property suitable with copper.

According to another aspect of the present invention, a kind of method of making the Solder for Al-Cu Joint Welding composite members, may further comprise the steps: by cold rolling an insertion parts of being made by fine aluminium or JIS Alxxx series alloys is attached on the copper base member, so that two parts that acquisition combines; By cold rolling or hot rolling alumina-base part is attached on the insertion parts, so that three parts that combine; Before being attached to alumina-base part on the insertion parts by cold rolling or hot rolling, two parts that combine are heat-treated, perhaps after being attached to alumina-base part on the insertion parts, three parts that combine are heat-treated by cold rolling or hot rolling.

According to this method, even the combination of accurate each copper base member that directly combines and insertion parts is undertaken by cold rolling, and can between them, obtain very high bond strength, thereby copper base member and alumina-base part are well combined.Yet, owing to aforementioned composite component obtains by rolling step, so can make Solder for Al-Cu Joint Welding composite component with certain width and length.Therefore, can produce require in light weight, heat conductivility, the heat exchanger component that corrosion resisting property is good and surface area is big.

In preceding method, the rolling reduction ratio of insertion parts is preferably 30% or higher.And then the rolling reduction ratio of alumina-base part is preferably 40% or higher.The rolling reduction ratio of insertion parts be set to 30% or the rolling reduction ratio of higher and/or alumina-base part be set to 40% or higher situation under, can obtain excellent bond strength.

In addition, the heat treatment temperature preferred amounts is 200 ℃-400 ℃, and this also can improve bond strength.

According to another aspect of the present invention, radiator comprises: a thermal radiation part of making and be provided with a plurality of lingulate fins that form by the superficial layers of grinding heat radiant section one side by alumina-base material, and described lingulate fin is; With the heat diffusion portion on the opposite side of making and be attached to the thermal radiation part by copper-based material in close-fitting mode.

In aforementioned radiator, because it comprises a thermal radiation part of being made and be provided with a plurality of lingulate fins that form by the superficial layers of grinding heat radiant section one side by alumina-base material, and the heat diffusion portion on opposite side of making and being attached to the thermal radiation part by copper-based material in close-fitting mode, therefore, when its during as heat exchanger material, heat conductivility can surpass aluminium, but compares the increase of maximum weight simultaneously with copper radiator.Particularly, owing to make by the copper base member, so can obtain excellent cooling effect not increasing under the situation of height that the radiator volume keeps existing fin simultaneously with the heat diffusion portion that thermal radiation partly contacts.Therefore, this radiator is suitable for as radiator that use in electrical equipment, that installing space is restricted.

In aforementioned radiator, heat diffusion portion preferably becomes tabular.In this case, the manufacturing of radiator is very easy to.

In addition, heat diffusion portion within it portion comprise that a heat exchange medium chamber and this heat exchange medium chamber are provided with the core rope that is formed on its inwall.Heat diffusion portion within it portion comprise that under the situation of heat exchange medium chamber, radiator can be used as heat pipe, and heat diffusion properties and thermal radiation can further improve.

And then, because heat diffusion portion made by corrosion resistant copper-based material, thus can water as heat exchange medium.

Be provided with in the heat exchange medium chamber under the situation of the core rope that is formed on its inwall and since the internal circulating load of heat exchange medium because of capillarity in indoor increase, so thermal diffusion performance and heat-radiating properties can further improve.

According to a further aspect of the invention, a kind of radiator comprises a thermal radiation part of being made and be provided with a plurality of lingulate fins that form by grinding on a side surface layer of thermal radiation part by alumina-base material; With the heat diffusion portion on the opposite side of making and be attached to the thermal radiation part by copper-based material by the insertion parts that a fine aluminium or JIS Alxxx series alloys are made.In this radiator, can in conjunction with the time prevent the generation of the oxidation of copper base member and the compound between different materials, thereby make it to have very high bond strength.And then characteristics such as the weight of this radiator has also that significant weight is light, heat conductivility, thermal diffusion performance and excellent corrosion-proof performance.

In aforementioned radiator, heat diffusion portion is preferably tabular.In this case, can make radiator at an easy rate.And then, heat diffusion portion preferably within it portion comprise that a heat exchange medium chamber and this heat exchange medium chamber are provided with and be formed at the core rope that its inwall ends.Heat diffusion portion within it portion comprise that under the situation of heat exchange medium chamber, this radiator can be used as heat pipe, and thermal diffusion performance and heat-radiating properties can further improve.

And then, owing to heat diffusion portion is made by corrosion resistant copper-based material, so can adopt water as heat exchange medium.

Be provided with in the heat exchange medium chamber under the situation of the core rope that is formed on its inwall, because the internal circulating load of heat exchange medium is indoor because of capillarity increases at this, so thermal diffusion performance and heat-radiating properties can be further improved.

Other purpose of the present invention and feature will from following with reference to accompanying drawing to embodying the explanation of the present invention.

Below with reference to accompanying drawings the present invention is done more complete description, from following explanation, can better understand the present invention.

Fig. 1 is the cutaway view according to Solder for Al-Cu Joint Welding composite members of the present invention;

Fig. 2 is the perspective view of the cooling water pipe made by the described Solder for Al-Cu Joint Welding composite members of Fig. 1;

Fig. 3 is the perspective view of test of expression with radiator;

Fig. 4 is the cutaway view of expression according to the routine A of radiator of the present invention;

Fig. 5 is the key diagram of manufacturing process of the radiator of the routine A of expression;

Fig. 6 is the key diagram of another kind of manufacturing process of the radiator of the routine A of expression;

Fig. 7 is the perspective view of expression according to the routine B of radiator of the present invention;

Fig. 8 is the key diagram of manufacturing process of the radiator of the routine B of expression;

Fig. 9 is the key diagram of another kind of manufacturing process of the radiator of the routine B of expression;

Figure 10 is the cutaway view of expression according to the routine C of radiator of the present invention;

Figure 11 is that expression is according to the routine D front view of radiator of the present invention and the cutaway view of manufacturing process thereof;

Figure 12 is the cutaway view of expression according to the routine E of radiator of the present invention;

Figure 13 is the cutaway view of expression according to the routine F of radiator of the present invention.

(Solder for Al-Cu Joint Welding composite members)

As shown in Figure 1, Solder for Al-Cu Joint Welding composite members 1 according to the present invention comprises 11, one copper base member 13 of an alumina-base part and an insertion parts 12.Insertion parts 12 is made by the aluminium alloy of fine aluminium or JIS Alxxx series, and between copper base member 13 and alumina-base part 11.

Composition for aforementioned alumina-base part 11 does not have special qualification.As alumina-base part 11, for example can adopt highly purified aluminium widely, the aluminium of JIS Alxxx series or its aluminium alloy, the Al-Cu of JIS A2xxx series is an alloy, the Al-Mn of JIS A3xxx series is an alloy, and the Al-Si of JIS A4xxx series is an alloy, and the Al-Mg of JIS A5xxx system is an alloy, the Al-Si-Mg of JIS A6xxx series is an alloy, and the Al-Zn-Mg-Cu of JIS A7xxx series is an alloy etc.

Composition for aforementioned copper base member 13 does not have special qualification yet.The deoxidized cooper that recommend to adopt oxygen-free copper or handle through phosphorus is as copper-based material, because they can prevent the oxidation or the chemical combination of aluminium.

As insertion parts 12, need to adopt as different metal materials and be easy to the fine aluminium that is attached on the copper base member 13 by cold rolling, or contain the aluminium alloy of the few JIS Alxxx series of other element.Special recommendation is by 99.90% highly purified aluminium, or purity is higher than the insertion parts 12 that the aluminium alloy of the JIS A1050 alloy in JIS Alxx series alloys is made.

By adopting aforementioned insertion parts 12, insertion portion can be by cold rolling by high-intensity combination.Usually, between alumina-base part 11 and copper base member 13, thermal resistance increases owing to pyroconductivity is different.Yet can having more by insertion in alumina-base material, the fine aluminium or the JIS Alxxx series alloys of high thermoconductivity reduce thermal resistance as aforementioned insertion parts 12.

(manufacture method of Solder for Al-Cu Joint Welding composite members)

Aforementioned Solder for Al-Cu Joint Welding composite members 1 is for example made by following method.

At first, insertion parts 12 is incorporated on the copper base member 13 by cold rolling.Because insertion parts 12 is to be made by the aluminium alloy of fine aluminium or JIS Alxxx series, so its deformation drag is little and by the cold rolling excellent performance that combines with copper base member 13.And then, owing to insertion parts 12 is attached on the copper base member 13 by cold rolling, so prevented the oxidation of copper base member 13 and the chemical combination of insertion parts 12 parts.Therefore, make bond strength become bad factor in order to eliminate.Although cold rolling reduction ratio preferred 30% or higher so that obtain enough bond strengths, when it surpasses 70%, might make the material fracture because of work hardening.Rolling reduction ratio is more preferably between 40% to 70%.

Then, alumina-base part 11 is incorporated on the insertion parts 12 by cold rolling or hot rolling.In this is rolling, because the surface of copper base member 13 has been inserted into that parts 12 cover and isolated from atmosphere, so can carry out hot rolling or cold rolling.In order securely alumina-base part 11 to be adhered on the insertion parts 12, rolling reduction ratio preferably is set to 40% or higher according to required final thickness.Under the situation of carrying out hot rolling, preferably rolling temperature is arranged on 100 to 350 ℃, and after arriving target temperature, carries out hot rolling immediately, so that on the interface between copper base member 13 and the insertion parts 12, can not generate the chemical combination phase.In this is rolling because insertion parts 12 and alumina-base part 11 all are aluminium matter, so they can combine securely, thereby make alumina-base part 11 and copper base member 13 by insertion parts 12 strong bonded.

In aforementioned a series of integrating steps, two parts that combine before being attached to alumina-base part 11 on the insertion parts 12 by heat treatment, so that securely in conjunction with copper base member 13 and insertion parts 12.Perhaps, after being attached to alumina-base part 11 on the insertion parts 12, three parts that combine are heat-treated, so that alumina-base part 11, insertion parts 12 and copper base member 13 are combined securely.In order to be suppressed at the growth of the compound on the interface between copper base member 13 and the insertion parts 12, and between them, obtain higher binding strength, preferably between 200 to 400 ℃, carry out aforementioned hot and handle.Aforementioned hot is handled and is more preferably carried out between 220 to 300 ℃.And then aforementioned hot is handled and is preferably carried out within an hour, so that can not produce compound.When the thickness of compound layer is controlled in 10 μ m or more hour by adjusting heat-treat condition, can further improve in conjunction with condition.

By before being attached to alumina-base part 11 on the insertion parts 12, two parts that combine being heat-treated, or, can produce the Solder for Al-Cu Joint Welding composite component of strong bonded by after being attached to alumina-base part 11 on the insertion parts 12, three parts that combine being heat-treated.Yet, alumina-base part 11 by cold rolling situation about being incorporated on the insertion parts under, heat treatment is preferably carried out at three parts that combine after being attached to alumina-base part 11 on the insertion parts 12.

Because aforementioned Solder for Al-Cu Joint Welding composite component 1 according to the present invention has the light like that weight of aluminium and heat-conductive characteristic, the thermal diffusion performance chemical combination decay resistance of copper, so composite component is applicable to heat exchange material.

For example, as shown in Figure 2, Solder for Al-Cu Joint Welding composite component 1 can be made into heat-exchange tube 2.In this heat-exchange tube 2, when copper base member 13 was positioned at the inside of pipe, cold-producing medium contacted with the copper base member 13 with excellent corrosion resistance energy.This has not only strengthened heat conductivility, and has strengthened corrosion resisting property.And then Solder for Al-Cu Joint Welding composite members 1 also can be manufactured with the radiator of a plurality of lingulate fins, and this radiator will be described in detail.

(example)

To describe Solder for Al-Cu Joint Welding composite members and manufacturing method below in detail according to composite members of the present invention.

As aforementioned copper base member 13, need to prepare a no-oxygen copper plate and a deoxidation copper coin of handling through phosphorus, their thickness is that 8mm, width are that 100mm, length are 150mm.

As aforementioned insertion parts 12, need preparing width be 94mm, and length is 150mm, and three kinds of purity that thickness is respectively 0.1mm, 0.5mm and 1.0mm are 99.999% aluminium sheet.

As aforementioned alumina-base part 11, needing to prepare width is 100mm, and length is 200mm, and thickness is respectively JIS A1100 or the JIS A6063 aluminium sheet of 2.0mm, 5.0mm, 10.0mm and 15.0mm.

The combination of above-mentioned parts is as shown in table 1.

In the manufacturing of composite component, insertion parts 12 is placed on the copper base member 13, makes them stand as shown in table 1 cold rolling of rolling reduction ratio then, and they are combined.

Subsequently, under the temperature shown in the table 1, be held one hour according to the

bonded block

12 and 13 of routine 1-13, to carry out intermediate heat-treatment.On the other hand, the technology below will under the situation that does not experience intermediate heat-treatment, carrying out according to the bonded block of routine 14-17 of the present invention.

Then, the alumina-base part 11 shown in the table 1 is placed on the insertion parts 12 of aforementioned bonded block, and stands hot rollings cold rolling or 500 ℃ with the rolling reduction ratio shown in the table 1, so that they combine.

And then as the example 14-17 that does not carry out intermediate heat-treatment, described parts will keep one hour to carry out final heat treatment under the temperature shown in the table 1.

The example 1-13 that carries out intermediate heat-treatment no longer carries out final heat treatment.

On the other hand, as according to there not being the composite members of the comparative example 1-4 of insertion parts, composite members is made by under temperature shown in the table 1 and rolling reduction ratio alumina-base part and copper base member being carried out hot rolling.

Combination rate and bond strength to composite members should be evaluated and tested.Combination rate is evaluated and tested by ultrasound examination.Combination rate (%) is calculated as follows: combination rate (%)=(not bonded area/measured area) * 100.Bond strength is by making test specimen from 1.Fall iron plate on the height of 5m last 20 times and check the crackle of test specimen or the situation of breaking to evaluate and test.The result of these evaluation and tests is as shown in table 1.

Table 1 (working condition and evaluation and test)

Composite members NO.		The copper base member	Insertion parts (pure Al) thickness (mm)	Cold rolling reduction ratio (%)	Intermediate heat-treatment (℃)	Alumina-base part material/thickness (mm)	Heat cold rolling reduction ratio (%)	Final heat treatment (℃)	Combination rate (%)	Bond strength
Composite members NO.		The copper base member	Insertion parts (pure Al) thickness (mm)	Cold rolling reduction ratio (%)	Intermediate heat-treatment (℃)	Alumina-base part material/thickness (mm)	Heat cold rolling reduction ratio (%)	Final heat treatment (℃)	Combination rate (%)	Bond strength	Example	1	Oxygen-free copper	????0.1	????42	????250	?A1100/2.0	????Heat/58	?????-	????100	Flawless
2	Oxygen-free copper	????0.5	????45	????300	?A1100/5.0	????Heat/58	?????-	????100	Flawless			1	Oxygen-free copper	????0.1	????42	????250	?A1100/2.0	????Heat/58	?????-	????100	Flawless
2	Oxygen-free copper	????0.5	????45	????300	?A1100/5.0	????Heat/58	?????-	????100	Flawless	3		The deoxidized cooper that phosphorus was handled	????0.5	????55	????350	?A6063/10.0	????Cold/50	?????-	????100	Flawless
4	Oxygen-free copper	????0.5	????59	????400	?A1100/10.0	????Heat/45	?????-	????100	Flawless	3		The deoxidized cooper that phosphorus was handled	????0.5	????55	????350	?A6063/10.0	????Cold/50	?????-	????100	Flawless
4	Oxygen-free copper	????0.5	????59	????400	?A1100/10.0	????Heat/45	?????-	????100	Flawless	5		The deoxidized cooper that phosphorus was handled	????1.0	????65	????300	?A6063/10.0	????Cold/58	?????-	????100	Flawless
6	Oxygen-free copper	????1.0	????68	????350	?A1100/2.0	????Cold/58	?????-	????100	Flawless	5		The deoxidized cooper that phosphorus was handled	????1.0	????65	????300	?A6063/10.0	????Cold/58	?????-	????100	Flawless
6	Oxygen-free copper	????1.0	????68	????350	?A1100/2.0	????Cold/58	?????-	????100	Flawless	7		The deoxidized cooper that phosphorus was handled	????1.0	????68	????400	?A6063/10.0	????Heat/55	?????-	????100	Flawless
8	The deoxidized cooper that phosphorus was handled	????1.0	????68	????200	?A6063/10.0	????Heat/53	?????-	????100	Flawless	7		The deoxidized cooper that phosphorus was handled	????1.0	????68	????400	?A6063/10.0	????Heat/55	?????-	????100	Flawless
8	The deoxidized cooper that phosphorus was handled	????1.0	????68	????200	?A6063/10.0	????Heat/53	?????-	????100	Flawless	9		Oxygen-free copper	????0.5	????65	????250	?A6063/15.0	????Cold/50	?????-	????100	Flawless
10	The deoxidized cooper that phosphorus was handled	????0.5	????65	????350	?A6063/15.0	????Cold/50	?????-	????100	Flawless	9		Oxygen-free copper	????0.5	????65	????250	?A6063/15.0	????Cold/50	?????-	????100	Flawless
10	The deoxidized cooper that phosphorus was handled	????0.5	????65	????350	?A6063/15.0	????Cold/50	?????-	????100	Flawless	11		Oxygen-free copper	????0.5	????65	????350	?A6063/15.0	????Heat/58	?????-	????100	Flawless
12	The deoxidized cooper that phosphorus was handled	????0.5	????65	????400	?A1100/5.0	????Heat/58	?????-	????100	Flawless	11		Oxygen-free copper	????0.5	????65	????350	?A6063/15.0	????Heat/58	?????-	????100	Flawless
12	The deoxidized cooper that phosphorus was handled	????0.5	????65	????400	?A1100/5.0	????Heat/58	?????-	????100	Flawless	13		Oxygen-free copper	????1.0	????60	????350	?A6063/10.0	????Heat/50	?????-	????100	Flawless
14	Oxygen-free copper	????1.0	????68	?????-	?A1100/2.0	????Cold/58	????350	????100	Flawless	13		Oxygen-free copper	????1.0	????60	????350	?A6063/10.0	????Heat/50	?????-	????100	Flawless
14	Oxygen-free copper	????1.0	????68	?????-	?A1100/2.0	????Cold/58	????350	????100	Flawless	15		The deoxidized cooper that phosphorus was handled	????1.0	????65	?????-	?A6063/10.0	????Cold/58	????300	????100	Flawless
16	Oxygen-free copper	????0.5	????65	?????-	?A6063/15.0	????Cold/50	????350	????100	Flawless	15		The deoxidized cooper that phosphorus was handled	????1.0	????65	?????-	?A6063/10.0	????Cold/58	????300	????100	Flawless
16	Oxygen-free copper	????0.5	????65	?????-	?A6063/15.0	????Cold/50	????350	????100	Flawless	17		The deoxidized cooper that phosphorus was handled	????0.5	????55	?????-	?A6063/10.0	????Cold/50	????300	????100	Flawless
Comparative example	1	Oxygen-free copper	No insertion parts			?A1100/10.0	????Heat/49 ????Heat/49 ????Heat/59 ????Heat/58		????50	17		The deoxidized cooper that phosphorus was handled	????0.5	????55	?????-	?A6063/10.0	????Cold/50	????300	????100	Flawless	Damage
	1	Oxygen-free copper				?A1100/10.0			????50	2	Oxygen-free copper	?A6063/10.0	????60	Crackle							Damage
	3	The deoxidized cooper that phosphorus was handled				?A6063/10.0			????70	2	Oxygen-free copper	?A6063/10.0	????60	Crackle	Damage
	3	The deoxidized cooper that phosphorus was handled				?A6063/10.0			????70	4	The deoxidized cooper that phosphorus was handled	?A1100/10.0	????95	Crackle	Damage

And then,, and compare and evaluate and test by Solder for Al-Cu Joint Welding composite members as shown in Figure 3 with the test of the non-Al-alloy parts manufacturing of aforementioned composite members same thickness heat-conductive characteristic with radiator according to example 2,8,16.

Aforementioned test is to prepare by aforementioned composite members being cut into width (W) 80mm, the degree of depth (D) 60mm sheet material and forming three lingulate fins 22 of arranging height (FH) 30mm, spacing of fin (FP) 2mm with radiator 20.The copper base is relatively surveyed and is constituted plate-like base 21.As for the test radiator 20 that non-Al-alloy is relatively made, this test is by aforementioned non-Al-alloy parts being cut into the size identical with aforementioned composite members and forming the lingulate fin preparation identical with aforementioned composite members on a surface with radiator 20.Its opposite side constitutes plate-like base 21.

As shown in Figure 3, thermal source 23 contacts with the core of each test with base portion 21 rear portions of radiator 20 in close-fitting mode.So test is heated by thermal source 23 with radiator 20, simultaneously, blown to test with air cooling on the radiator from the upside of fin with the 2m/sec wind speed.In this state, measure the temperature on thermal source 23 positive tops 24, the temperature and the thermal source 23 input heats (w) of cooling air respectively, and calculate the thermal resistance of each test, in order to the evaluation and test heat-conductive characteristic with radiator by following formula (f1).

R=(Te-Tair)/Q .... (f1) wherein R be radiator thermal resistance (℃/W), Te be part 24 directly over the thermal source 23 temperature (℃), Tair be cooling air temperature (℃), Q is the heat that thermal source 23 drops into.

Evaluation result is as shown in table 2.

The heat-conductive characteristic of table 2Al-Cu composite members and non-composite members

Test No.	Test specimen	Thermal resistance R (℃/W)
Test No.	Test specimen	Thermal resistance R (℃/W)	Ⅰ	Composite members (example 2) oxygen-free copper-A1100 intermediate heat-treatment	0.510
A1100 spare (non-compound)	0.667				0.510
A1100 spare (non-compound)	0.667	Ⅱ		Deoxidized cooper-A6063 intermediate heat-treatment that composite members (example 8) was handled through phosphorus	0.534
A6063 (non-compound)	0.682				0.534
A6063 (non-compound)	0.682		Ⅲ	The final heat treatment of composite members (example 16) oxygen-free copper-A6063	0.528
A6063 spare (non-compound)	0.682				0.528

As can be known from the results of Table 1, as the Solder for Al-Cu Joint Welding composite members that is inserted with insertion parts, can guarantee firm the combining on whole surface of different metal partss, thereby have high bond strength.And then as can be known from the results of Table 2, this guarantees that also each Solder for Al-Cu Joint Welding composite members has the heat-conductive characteristic above aluminium, can not destroy heat-conductive characteristic because of bound fraction.

(radiator)

Fig. 4-11 expression is according to the routine A-D of radiator of the present invention, and the thermal radiation that thermal diffusion parts that every routine radiator is made by alumina-base material and copper-based material are made is partly formed.

And then Figure 12-13 expression is according to the routine E-F of radiator of the present invention, and every routine radiator is made by aforementioned Solder for Al-Cu Joint Welding composite members 1.The thermal radiation that every routine radiator is made by alumina-base material partly and by insertion parts is attached to the heat diffusion portion composition that the copper-based material on the thermal radiation part is made.The shape and the manufacture method of each radiator will be described below.

(embodiment A)

Radiator 31 shown in Figure 4 is by constituting in thermal radiation part 41 that has a plurality of lingulate fins 42 on the one side surface and the tabular heat diffusion portion 51 that is attached on the opposite side of thermal radiation part 41.

As shown in Figure 5, radiator 31 is by tabular alumina-base part 43 and tabular copper base member 51 being combined, forming lingulate fin 42 then and make on aluminium sheet 43.

In aforementioned manufacturing process, because two parts are tabular, its associated methods can be any known method that comprises milling method, frictional engagement method, ultrasonic wave associated methods and braze welding method.And then lingulate fin 42 also can be made by known method.

As shown in Figure 6, obtain thermal radiation parts 41, thermal radiation partly is attached on the copper base 51 makes then thereby radiator 31 also can pass through to form lingulate fin 42 on aluminium sheet.In this case, thermal radiation part 41 and heat diffusion portion 51 must be except that milling method method.

Before forming lingulate fin 42, the thickness of aluminium sheet 43 is preferably 1mm to 10mm.If the height of fin is less than 1mm, then the height of fin is too small, causes heat-radiating properties to descend.On the other hand, even the height of fin surpasses 10mm, thinner and higher lingulate fin 42 is also inoperative for forming.

And then the thickness that constitutes the tabular copper base member of heat diffusion portion 51 is preferably from 1.5mm to 8mm, so that guarantee the thermal diffusion performance of tabular heat diffusion portion excellence and avoid overweight.

(Embodiment B)

Radiator shown in Fig. 7 is by constituting in thermal radiation part 41 that forms lingulate fin 42 on the one surface and the heat diffusion portion 61 that is attached on the opposite side of thermal radiation part 41.Heat diffusion portion 61 has a hollow chamber 62 that is used for heat exchange medium.By vacuum treatment being carried out in chamber 62 and charge into for example heat exchange medium such as water in vacuum chamber, this radiator 32 can be used for as heat pipe.

As shown in Figure 8, radiator 32 can be made by being attached on the heat diffusion portion 61 with hollow space by the heat conduction part of making at formation lingulate fin 42 on the aluminium sheet 41.Perhaps, as shown in Figure 5, lingulate fin 42 can form after two parts are combined.Or, as shown in Figure 9, similarly heat-exchanging chamber 32 ' can be attached on the radiator 31 by the copper base member 65 that will have the U-shaped cross section and make, and as shown in Figure 4, described radiator 31 obtains by tabular heat diffusion portion 51 and thermal radiation part 41 are combined.In this case, the copper base member 65 in tabular heat diffusion portion 51 and U-shaped cross section constitutes heat diffusion portion 64.

In the present embodiment, the associated methods of thermal radiation part 41 and heat diffusion portion 61, the associated methods of thermal radiation part 41 and U-shaped parts 65, the size of the forming method of lingulate fin 42 and thermal radiation part 41 is identical with routine A.Because the heat diffusion portion 61 of

radiator

32 and 32 ' or 64 is as heat pipe, so the thermal diffusion performance of heat diffusion portion 61 and 64 and heat-radiating properties will increase.Therefore, heat diffusion portion 61 and 64 thickness can be than the thin thickness of tabular heat diffusion portion 51.This thickness is preferably 1.2mm-5mm.Because heat diffusion portion 61 is made by copper-based material, thus excellent corrosion resistance had, and can adopt water as heat exchange medium.

(Embodiment C)

Figure 10 represents the radiator according to Embodiment C.This radiator 33 has a heat diffusion portion 66, and it is similar to heat pipe with the radiator 32 according to Embodiment B.Yet this radiator 33 is different with aforementioned radiator 32, and its SMIS rope is formed on the inwall of heat exchange medium chamber 63.Therefore, by forming the core rope on the inwall that wire netting or sintered copper powder is attached to heat exchange medium chamber 63, can strengthen the internal circulating load of indoor heat exchange medium, thereby utilize capillarity to improve the performance of heat pipe, this has improved the thermal diffusion performance and the heat-radiating properties of radiator.

(embodiment D)

Figure 11 represents to have the radiator 34 of the heat pipe 73 in heat diffusion portion imbedded 71.In heat pipe 73, enclose heat exchange medium 72.

In the

radiator

32 and 33 of previous embodiment B and C, heat diffusion portion 61 and 66 itself constitutes heat pipe.Heat pipe forms by vacuumize and introduce heat exchange medium after each component-assembled is got up.Therefore, the opening that is used to vacuumize or introduce heat exchange medium is exposed to the outer surface of radiator.

On the other hand, in the radiator 34 of present embodiment, heat exchange medium is being introduced and sealed opening with after finishing heat pipe 73 from opening, heat pipe 73 is assembled with the state of imbedding heat diffusion portion 71, forms lingulate fin 42 subsequently.Therefore, heat pipe 73 is surrounded by heat diffusion portion 71, and can not see from the outside.

Radiator 34 can be by technology manufacturing for example shown in Figure 11.

That is, the heat pipe of making 73 is added in the concave portions 75 of case member 74.Concave portions 75 has an interior shape corresponding with the external shape of heat pipe 73.Therefore, heat pipe 73 is fitted closely in the concave portions 75.Therefore, the case member 74 that heat pipe 73 wherein is housed for example is incorporated on the radiator 31, and in described radiator 31, as shown in Figure 6 tabular heat diffusion portion 51 and thermal radiation part 41 are combined together.Because adopted the reliable heat pipe of preprepared, so heat pipe flush type radiator 34 has very high reliability.

(embodiment E)

Figure 12 represents a radiator, comprise: the thermal radiation part 81 that is formed with lingulate fin 42 on it, the heat diffusion portion 82 that will be incorporated on the heating element, and one be inserted between thermal radiation part 81 and the heat diffusion portion 82 so that the insert that both are combined.This radiator 35 forms by form the lingulate fin manufacturing on the surface of the alumina-base part 11 of the Solder for Al-Cu Joint Welding composite members of making in advance 1.Copper base member 13 constitutes tabular heat diffusion portion 82.Each several part is identical with embodiment A in the preferred thickness of first being processed.

Radiator 35 seemingly has excellent thermal diffusion performance and very light weight with routine category-A.And then, because thermal radiation part of being made by different materials 81 and heat diffusion portion 82 are combined together by insertion parts 12, so the bond strength excellence.

(embodiment F)

Figure 13 represents to have the radiator 36 of the heat exchange medium chamber 84 in heat diffusion portion of being formed at 83.In this radiator 36, be attached on the radiator 35 of embodiment E by copper base member 65 on the heat exchange medium chamber 84 and form the U-shaped cross section.Copper base member 13 in this composite component 1 and U-shaped parts 65 constitute heat diffusion portion 83.The thickness of each several part before processing is preferably identical with Embodiment B.

Radiator 36 has and similar excellent thermal diffusion performance of Embodiment B and lighter weight.And then owing to thermal radiation part 81 and the heat diffusion portion 83 made by different materials combine by insertion parts 12, so the bond strength excellence.

And then, in radiator 36, can the core rope be arranged on the inwall of heat exchange medium chamber 84 as radiator shown in Figure 10 33.

In

aforementioned radiator

31,32,32 ', 33,34,35 and 36, the composition that constitutes the alumina-base part of

thermal radiation part

41 and 81 has no particular limits.For example, can adopt highly purified aluminium, the aluminium alloy of aluminium or JISA1xxx series, the Al-Cu of JIS A2xxx series is an alloy, the Al-Mn of JIS A3xxx series is an alloy, and the Al-Si of JIS A4xxx series is an alloy, and the Al-Mg of JIS A5xxx series is an alloy, the Al-Si-Mg of JIS A6xxx series is an alloy, and the Al-Zn-Mg-Cu of JIS A7xxx series is that alloy and Al-Zn-Mg are alloy etc.In previous materials, consider to form lingulate fin, can recommend to adopt the alloy of JISA6xxx series.

And then the separatory that becomes that constitutes

heat diffusion portion

51,61,62,65,66,71,82 and 83 copper base member has no particular limits.The deoxidized cooper that for example can adopt tough pitch copper, oxygen-free copper or handle through phosphorus.In previous materials, consider the generation that when in conjunction with the thermal radiation part 41 that constitutes by different metal materials, will control oxygen or aluminium compound, can recommend the deoxidized cooper that adopts oxygen-free copper or handle through phosphorus.

And then among the embodiment E-F, as aforementioned insertion parts 12, recommend adopting purity is 99.90% or higher highly purified aluminium, and the JIS A1050 alloy in the JIS A1xxx series is as the insertion parts in the aforementioned Solder for Al-Cu Joint Welding composite members.

The present invention requires the priority based on the Japanese patent application Nos.2000-66942 of the Japanese patent application Nos.2000-66807 of application on March 10th, 2000 and 10 applications March in 2000, and its content is by being incorporated among the application with reference to its integral body.

In technical terms and statement that this adopted is adopted as descriptive term, and do not constitute restriction to invention, and in the use of this term and statement, do not repel any shown in the present and described or the feature or its part that are equal to, but will be understood that various modification all can be included within the scope of the presently claimed invention.

Claims

1, a kind of Solder for Al-Cu Joint Welding composite members comprises:

An alumina-base part;

A copper base member; And

An insertion parts of making by fine aluminium or JIS Alxxx series alloys,

Wherein, described alumina-base part and described copper base member are combined with each other by described insertion parts.

2, aluminium one bronze medal composite members as claimed in claim 1, wherein, described copper base member is made by oxygen-free copper or through the deoxidized cooper that phosphorus is handled.

3, a kind of method of making the Solder for Al-Cu Joint Welding composite members, described method comprises step:

Utilize the cold rolling insertion parts that fine aluminium or JIS Alxxx series alloys are made to be attached on the copper base member, so that obtain two parts combining;

By cold rolling or hot rolling alumina-base part is attached on the described insertion parts, so that three parts that acquisition combines;

Before being attached to described alumina-base part on the described insertion parts, described two parts that combine are heat-treated by cold rolling or hot rolling; Perhaps after being attached to described alumina-base part on the described insertion parts, described three parts that combine are heat-treated by cold rolling or hot rolling.

4, the method for manufacturing Solder for Al-Cu Joint Welding composite members as claimed in claim 3, wherein, the rolling reduction ratio of described insertion parts is set to 30% or higher.

5, the method for manufacturing Solder for Al-Cu Joint Welding composite members as claimed in claim 3, wherein, the rolling reduction ratio of described alumina-base part is set to 40% or higher.

6, the method for manufacturing Solder for Al-Cu Joint Welding composite members as claimed in claim 4, wherein, the rolling reduction ratio of described alumina-base part is set to 40% or higher.

7, the method for manufacturing Solder for Al-Cu Joint Welding composite members as claimed in claim 3, wherein, described heat treatment step carries out under 200 to 400 ℃.

8, the method for manufacturing Solder for Al-Cu Joint Welding composite members as claimed in claim 4, wherein, described heat treatment step carries out under 200 to 400 ℃.

9, the method for manufacturing aluminium one bronze medal composite members as claimed in claim 5, wherein, described heat treatment step carries out under 200 to 400 ℃.

10, a kind of radiator comprises:

A thermal radiation part is made by alumina-base material, and is provided with a plurality of lingulate fins that form by the superficial layer of described thermal radiation part one side of grinding; With

A heat diffusion portion is made by copper-based material, and is attached in close-fitting mode on the opposite side of described thermal radiation part.

11, radiator as claimed in claim 10, wherein, described heat diffusion portion is a tabular.

12, radiator as claimed in claim 10, wherein, described heat diffusion portion comprises a heat exchange medium chamber of portion within it.

13, radiator as claimed in claim 12, wherein, described heat exchange medium chamber is provided with the core rope that is formed on the one inwall.

14, a kind of radiator comprises:

A thermal radiation part is made by alumina-base material, and is provided with a plurality of ligule teeth that form by the superficial layer of described thermal radiation part one side of grinding; With

A heat diffusion portion is made by copper-based material, and is attached to by an insertion parts of being made by fine aluminium or JIS Alxxx series alloys on the opposite side of described thermal radiation part.

15, radiator as claimed in claim 14, wherein, described heat diffusion portion is a flat board.

16, radiator as claimed in claim 14, wherein, described heat diffusion portion comprises a heat exchange medium chamber of portion within it.

17, radiator as claimed in claim 16, wherein, described heat exchange medium chamber is provided with the core rope on an one inwall.