CN110290882A - Aluminum extruded flat perforated pipe and its manufacturing method with excellent soldering - Google Patents
Aluminum extruded flat perforated pipe and its manufacturing method with excellent soldering Download PDFInfo
- Publication number
- CN110290882A CN110290882A CN201880011508.8A CN201880011508A CN110290882A CN 110290882 A CN110290882 A CN 110290882A CN 201880011508 A CN201880011508 A CN 201880011508A CN 110290882 A CN110290882 A CN 110290882A
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- China
- Prior art keywords
- pipe
- aluminum
- flat perforated
- perforated pipe
- soldering
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
- B23K1/0012—Brazing heat exchangers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/22—Making metal-coated products; Making products from two or more metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/151—Making tubes with multiple passages
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/19—Soldering, e.g. brazing, or unsoldering taking account of the properties of the materials to be soldered
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/28—Selection of soldering or welding materials proper with the principal constituent melting at less than 950 degrees C
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/02—Tubular elements of cross-section which is non-circular
- F28F1/022—Tubular elements of cross-section which is non-circular with multiple channels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/084—Heat exchange elements made from metals or metal alloys from aluminium or aluminium alloys
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/089—Coatings, claddings or bonding layers made from metals or metal alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/14—Heat exchangers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/10—Aluminium or alloys thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
- F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
- F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2255/00—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes
- F28F2255/16—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes extruded
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Geometry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Extrusion Of Metal (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
For aluminum extruded flat perforated pipe, provides simple and inexpensively effectively improve the method that excellent outer surface soldering property and advantageously manufactured.Using aluminum pipe material of main part and the brazing material formed by Al-Si line aluminium alloy, by the same squeeze out in the aluminum extruded flat perforated pipe 10 that processing is formed, a part exposure of at least flat part of the above-mentioned brazing material in the whole region or pipe periphery wall portion of pipe periphery wall portion, to form cored solder portion 18.
Description
Technical field
The present invention relates to aluminum extruded flat perforated pipes and its manufacturing method with excellent soldering, more particularly to can
Suitably serve as the heat-transfer pipe of heat exchanger automobile heat exchangers such as (wherein be especially) air conditioning for automobiles, by fin institute
The peripheral part of the aluminum extruded flat perforated pipe of soldered joint is stable and inexpensively assigns cored solder portion, stablizes and uniformly to have
Soldering the aluminum extruded flat perforated pipe of heat exchanger and the method that advantageously manufactures it.
Background technique
All the time, obtained from being processed as the extrusion of aluminum material, entirety is aluminum extruded in flat cross-sectional shape
Flat perforated pipe is used as the refrigerant path pipe of automobile heat exchanger, and refrigerant circulates in the refrigerant path pipe,
On the other hand, aluminum fin-stock installation, soldering are fixed on the direction rectangular with the refrigerant path pipe, thus constitute heat exchange
Device, then, by flowing the air as heat-exchange fluid along the fin, to carry out heat between refrigerant and air
Exchange.In addition, all the time, using the aluminum fin-stock formed by the soldering lug for being covered with Al-Si alloy cored solder, passing through solder flux
The fluxless soldering such as soldering or vacuum brazing or atmosphere soldering makes aluminum fin-stock soldered joint in such aluminum extruded flat porous
Pipe, to assemble.
But in recent years, from the viewpoint of the lighting of aluminum-made heat exchanger, it is desirable that aluminium wing material is thinning, the feelings
Under condition, if oppositelyly, wing material can be changed to naked material (bare material) from soldering lug and be coated pricker to pipe
Solder can then expect further being thinning for wing material.However, status is not established that cored solder is stable and honest and clean on an industrial scale
Valence it is coated on the method for aluminum extruded flat perforated pipe.
For this purpose, as the method for being coated cored solder to aluminum extruded flat perforated pipe is coped with, it was also proposed that following methods
(Japanese Kohyo 6-504485 bulletin, Japanese Unexamined Patent Publication 7-308795 bulletin) etc.: aluminum extruded flat perforated pipe is impregnated in
It is coated with the mixture in the mixture of solder flux and silicon metal powder or on aluminum extruded flat perforated pipe, then heated,
It is dry, thus become and is coated with the form of the mixture in the outer surface of aluminum extruded flat perforated pipe, it is thus obtained using this
It is merged with naked material group and is heated in soldering oven, makes its alloying by aluminum extruded flat perforated pipe, is formed on their joint surface
The melting soldering flux (Japanese: dissolving ろ う) of Al-Si system, is thus brazed.But in these methods, coating or coating operation
Trouble, cost is got higher, and is difficult to uniformly be coated, and the adaptation of Si powder is also easy to become inadequate, therefore in distress
To carry out difficult point as uniform and stable soldered joint.In addition, also proposed cored solder thermal jet is applied to it is aluminum extruded flat
The technology (Japanese Unexamined Patent Publication 2002-172485 bulletin) of antipriming pipe, but the technology is also difficult to realize uniformly be coated, and deposits
The problem of new equipment etc. gets higher cost must imported.In order to solve these problems, it is believed that use in outer surface-stable and
It is effective for being uniformly covered with the extrusion flat perforated pipe of brazing material.
On the other hand, it as flat perforated pipe is squeezed out, is obtained usually using tap hole extrusion is carried out to aluminum or aluminum alloy
Pipe, propose to cover such aluminum extruded flat perforated pipe when squeezing out processing in Japanese Unexamined Patent Publication 10-258356 bulletin
The technology of lid brazing material.But the brazing material layer of covering can be involved in two end edge portions of aluminum extruded flat perforated pipe, and exist
Be easy to produce brazing material layer is involved in bad such problems.In addition, in order to solve this problem, Japanese Unexamined Patent Publication 10-197175
It also proposed in number bulletin and form the scheme of protrusion in the two sides edge of pipe, but due to must be in aluminum extruded flat perforated pipe
Protrusion, therefore, the restriction etc. by shape, so there is a problem of that versatility becomes extremely low is arranged in two sides edge.
In addition, proposing following methods, that is, use forms material by aluminium core material in Japanese Unexamined Patent Application 63-97309 bulletin
The composite billet that material and surface layer material forming material (it is formed by Al-Si system aluminium brazing alloy material) are constituted, is simultaneously squeezed out
Thus processing is manufactured to cover to cover made of brazing material layer to the outer surface flat part of pipe peripheral wall portion and be managed, still, just covers in this way
For lid pipe, there is also it is following the problems such as: make because of the influence of the metal flow of surface layer material forming material (metal flow)
In the case that the position of the port holes of composite billet and diffluence combination die is slightly away from, brazing material layer is involved in weld portion, and generation is involved in
It is bad.
Existing technical literature
Patent document
Patent document 1: Japanese Kohyo 6-504485 bulletin
Patent document 2: Japanese Unexamined Patent Publication 7-308795 bulletin
Patent document 3: Japanese Unexamined Patent Publication 2002-172485 bulletin
Patent document 4: Japanese Unexamined Patent Publication 10-258356 bulletin
Patent document 5: Japanese Unexamined Patent Publication 10-197175 bulletin
Patent document 6: Japanese Unexamined Patent Application 63-97309 bulletin
Summary of the invention
Subject to be solved by the invention
Under the above conditions, in order to obtained from being processed as the extrusion of aluminum material in aluminum extruded flat perforated pipe at it
Pipe peripheral part engages other al members such as aluminum fin-stock and in order to be used for shape in the outer surface of antipriming pipe stabilization and inexpensively setting
At the Al-Si system brazing material layer of melting soldering flux, present inventor is had made intensive studies, as a result, it has been found that, by using
Common aluminum pipe material of main part and the aluminium soldering material formed by Al-Si alloy are as the aluminum material for squeezing out processing and to it
Simultaneously hot extrusion processing, so as to the pipe peripheral part of obtained aluminum extruded flat perforated pipe make should by Al-Si system conjunction
The aluminium soldering material that gold is formed advantageously exposes, in addition, it is found that by the way that in composite billet, (it is by the aluminum pipe material of main part of hot extrusion
With obtained from the aluminium soldering combination of materials that is formed as Al-Si system) extrusion direction in front of foreboard as defined in setting, so as to
It effectively inhibits brazing material layer to be involved in two end edge portions that gained squeezes out flat perforated pipe, further find, due to can
Suitable for all usually used extrusion flat perforated pipes, therefore versatility is also excellent, and thus, it is possible to simple and cheap for discovery
Ground make the exposure of uniform brazing material layer and can by no this be involved in it is undesirable in a manner of formed.
Therefore, the present invention is completed based on above-mentioned opinion, and the project to be solved is in the extrusion by aluminum material
Obtained from processing, in the whole aluminum extruded flat perforated pipe in flat cross sectional shape, simply and inexpensively provide with excellent
The aluminum extruded flat perforated pipe of different outer surface soldering property, in addition, other projects, which are to provide advantageously manufacture, can play this
The method of the aluminum extruded flat perforated pipe of the advantageous feature of sample.
Means for solving the problems
Then, in order to solve the above problems, the present invention using the aluminum extruded flat perforated pipe with excellent soldering as
Its purport, which is characterized in that it is as obtained from the extrusion processing of aluminum material, whole squeezing in flat cross-sectional shape
Outlet pipe has the multiple flow paths extended parallel to independently of one another with tube axial direction, and these flow paths are across in pipe axis side
The inner partition portion that upwardly extends and arranged in the length direction of flat cross-sectional shape,
The aluminum extruded flat perforated pipe is by using aluminum pipe material of main part and the aluminium formed by Al-Si line aluminium alloy
Brazing material is formed as the extrusion processing of above-mentioned aluminum material, also, above-mentioned aluminium soldering material is in the entire of pipe periphery wall portion
A part exposure in region or at least flat part in the pipe periphery wall portion, to form cored solder portion, also, the soldering
Material portion exists with 50% or more and the 100% of the perimeter of the above-mentioned pipe periphery wall portion in pipe cross section ratio below, another party
Face exists positioned at the cored solder portion of pipe periphery wall portion with the 90% of the thickness of pipe periphery wall portion ratio below.
It should be noted that the preferred embodiment of the aluminum extruded flat perforated pipe according to the present invention with excellent soldering
One of, as above-mentioned aluminium soldering material, using following aluminium alloys, the aluminium alloy contains the Si of 1.0~13.0 mass %, also contains
There are 1.4 mass % Mn below, the Cr of 0.05~0.30 mass %, the Zr of 0.05~0.30 mass %, 0.05~0.30 matter
One or more of the Sr of the Ti and 0.0001~0.1 mass % of % are measured, surplus is aluminium and inevitable impurity；Separately
On the one hand, as above-mentioned aluminum pipe material of main part, using following aluminium alloys, the aluminium alloy contain 0.7 mass % Cu below and
1.4 mass % Mn below, the Zr of Cr, 0.05~0.30 mass % also containing 0.05~0.30 mass %, 0.05~0.30
One or more of the Sr of the Ti of quality % and 0.0001~0.1 mass %, surplus are aluminium and inevitable impurity.
In addition, one of the preferred embodiment of the aluminum extruded flat perforated pipe according to the present invention with excellent soldering, makees
For the aluminum material of above-mentioned extrusion processing, the composite billet being made of above-mentioned aluminum pipe material of main part and above-mentioned aluminium soldering material is used.
In addition, above-mentioned composite billet has the core sheath structure of one, described for one of other preferred embodiments of the invention
The core sheath structure of one include the core base that is formed by above-mentioned aluminum pipe material of main part and around the core base by above-mentioned aluminium pricker
The sheath base that wlding material is formed.
In addition, for one of advantageous manner of aluminum extruded flat perforated pipe with excellent soldering of the invention,
Above-mentioned extruding pipe is processed by using the extrusion of the above-mentioned aluminum material of diffluence combination die and is formed.
In addition, the present invention is also with excellent in order to advantageously manufacture the aluminum extruded flat perforated pipe of aforementioned present invention
Soldering property aluminum extruded flat perforated pipe manufacturing method as its purport, which is characterized in that use by aluminum pipe material of main part with
Composite billet that aluminium soldering material (it is formed by Al-Si line aluminium alloy) is constituted and with the aluminum pipe material of main part same material
Foreboard, also, so that the foreboard diameter for the diameter of above-mentioned composite billet for 90% or more and 100% or less and
Constitute the thickness of the foreboard for the diameter of the composite billet for 5% or more and 30% mode below, by the foreboard
It is configured at the extrusion direction front side of above-mentioned composite billet, and these foreboards and composite billet are squeezed together using diffluence combination die
It processes out.
In turn, in addition, for the manufacturing method of aluminum extruded flat perforated pipe of the invention, it is advantageous to above-mentioned compound
Base has a core sheath structure of one, and the core sheath structure includes the core base formed by above-mentioned aluminum pipe material of main part and positioned at the core
The sheath base formed by above-mentioned aluminium soldering material around base.
In addition, the present invention is also using aluminum-made heat exchanger as its purport, which is characterized in that be configured to comprising as described above
Wing outside the aluminum of the outer surface of aluminum extruded flat perforated pipe and soldered joint of the invention in the aluminum extruded flat perforated pipe
Piece.
The effect of invention
As a result, in the aluminum extruded flat perforated pipe for being set to composition of the invention, the pricker that is formed by aluminium soldering material
Solder portion the whole region of its pipe peripheral part or at least flat part of pipe peripheral part a part of exposure and exist, and
Also being involved in two end edge portions for squeezing out flat perforated pipe without brazing material layer, can be advantageously used for having in tube outer surface side
The heat-transfer pipe of the heat exchanger (radiator, heater etc.) of effective soldering property.
In addition, be made of for aluminum extruded flat perforated pipe of the invention aluminum pipe material of main part and aluminium soldering material, and
It is directly formed by squeezing out processing while this 2 kinds of materials, therefore, the spy of pipe can be ensured using aluminum pipe material of main part
Property, while soldering property is effectively played using aluminium soldering material, thus, it may have it is flat more can advantageously to improve target extrusion
The advantages of design freedom of hole pipe.
In addition, the manufacturing method of the aluminum extruded flat perforated pipe according to the present invention with excellent soldering, with by
Configuration in front of the extrusion direction for the composite billet that aluminum pipe material of main part and aluminium soldering material (it is formed by Al-Si line aluminium alloy) are constituted
There is the state of defined foreboard, processing is simultaneously squeezed out from diffluence combination die, therefore, can effectively inhibit or prevent aluminium soldering
Material is involved in aluminum pipe material of main part, and thereby, it is possible to advantageously result in following aluminum extruded flat perforated pipes: brazing material layer is not present
It is involved in two end edge portions of obtained extrusion flat perforated pipe, there is stable quality in terms of soldering property.
In addition, just being assembled simultaneously using aluminum extruded flat perforated pipe of the invention, by it with aluminum outside fin (naked fin)
It is engaged, for the aluminum-made heat exchanger to constitute using soldering heating, there is the extrusion of the aluminium soldering material by exposure
The use of flat perforated pipe is fixed so as to be advantageously carried out the soldering of aluminum outside fin, can simply and inexpensively obtain
To target heat exchanger.
Detailed description of the invention
[Fig. 1] is the cross section explanatory diagram for schematically showing an example of aluminum extruded flat perforated pipe of the invention, and (a) shows
Its overall diagram out, it is not that (b) figure shown to amplify a part of its width direction central portion, which is (c) by cored solder portion,
A part of explanatory diagram amplified and shown of the width direction end of the example of same exposure ratio.
[Fig. 2] be for composite billet used in embodiment explanatory diagram, (a) and (b) be respectively show its cross section and
The figure of longitudinal section (c) is the explanatory diagram for being shown provided with the longitudinal section of the composite billet of state of foreboard.
[Fig. 3] be for monomer base used in embodiment explanatory diagram, (a) and (b) be respectively show its cross section and
The figure of longitudinal section (c) is the explanatory diagram for being shown provided with the longitudinal section of the monomer base of state of foreboard.
Specific embodiment
Hereinafter, in order to be more specifically illustrated by the present invention, referring to attached drawing, to representative embodiments of the invention in detail into
Row explanation.
Firstly, an example of aluminum extruded flat perforated pipe of the invention is in Fig. 1 to become and its length direction (tube axial direction)
The cross section shapes in the section in rectangular direction are schematically shown.Herein, as shown in Fig. 1 (a), flat porous of the invention
Pipe 10 is the extruding pipe of the whole aluminum material in flat cross-sectional shape, have independently of one another with tube axial direction in parallel
Multiple flow paths 12 of the rectangular shape of extension, and these multiple flow paths 12 are formed in the flat pattern as pipe width direction
Structure made of specified interval arrangement is separated on length direction (left and right directions in figure).It should be noted that the flat porous
The opposite upper and lower surfaces of pipe 10 are respectively flat surface, samely, using such as plate fin, corrugated fin this
The outside fin of sample is (not shown) to be used as naked fin, is installed on the upper and lower surfaces, Neng Gouzuo using method of solder bonding
For heat exchanger use.It should be noted that be herein rectangular shape for the cross-sectional shape of flow path 12, but can also be with
Various shape obtained from being combined using the shapes such as known circle, ellipse, triangle or by them.
Moreover, for the present invention, in the flat perforated pipe 10 of such structure, by Fig. 1 (a)~(c) it is found that including
By common aluminum pipe material of main part structure around the flow path 12 including inner partition portion 16 between adjacent flow path 12,12
At on the other hand, in the complete cycle of the pipe periphery wall portion 14, in at least flat part of pipe periphery wall portion 14, (it provides above-mentioned flat
Smooth face) a part, there are the layers in the cored solder portion 18 formed by aluminium soldering material, and the cored solder portion 18 is in pipe periphery wall portion
14 at least part of outer surface (herein is in whole outer peripheral surfaces) exposure.As a result, by the way that cored solder portion 18 is configured at pipe
The cored solder ingredient of periphery wall portion 14 and the aluminium soldering material by constituting such cored solder portion 18, so as to be sent out
Wave the extrusion flat perforated pipe 10 of excellent soldering.
In addition, as described above, pipe whole perimeter L of the cored solder portion 18 in the cross section of flat perforated pipe 10, it is at least flat
The outer surface side exposure of the pipe periphery wall portion 14 of a part of smooth portion's (flat surface), for its exposure range, preferably in phase
When in 50% or more and 100% or less the range in the whole perimeter L of pipe exposure mode constitute, advantageously with preferably 60% with
Above, more preferable 70% or more.As a result, by the pipe outer peripheral surface of flat perforated pipe 10, cored solder portion 18 the whole perimeter L of pipe rule
Exposure in regional scope is determined, so that particularly, making to being brazed the aluminium soldering material settling out made contributions and equably exposing
For most preferred state, as shown in Fig. 1 (a), be cored solder portion 18 in the full scope of the whole perimeter L of pipe there are the case where.It needs
It is noted that fin may occur for soldering not when heating when its exposed region is less than the 50% of the perimeter L of pipe periphery wall portion 14
A problem that engagement, fin peel off.In addition, the thickness of the exposed region without making the cored solder portion 18 in the whole perimeter L of pipe is equal
It is identical, for example, it is also possible to make the exposure ratio exposure of cored solder portion 18 in different thickness as shown in Fig. 1 (c).Furthermore it is preferred that
Expose such cored solder portion 18 continuously relative to the whole perimeter L of pipe, but other following situations are also: with locally non-company
Continuous state exposure；Or the exposure in the form of extending along tube axial direction at multiple positions of pipe circumferential direction by specific length.
In addition, as shown in Fig. 1 (a), cored solder portion 18 is in the pipe periphery wall in the flat perforated pipe 10 of such structure
A part (this is in complete cycle) exposure of the complete cycle of the peripheral part in portion 14 or at least flat part, on the other hand, in the cored solder portion
18 unexposed positions, i.e. comprising the flow path 12 including inner partition portion 16 between adjacent flow path 12,12 around,
There are common aluminum pipe material of main parts.It should be noted that herein, as shown, pipe periphery wall portion 14 constitutes flat porous
The periphery wall of pipe 10, the external wall part as each flow path 12 function.In addition, shown in such as Fig. 1 (b), being formed in outside pipe
In the case that the cored solder portion 18 of peripheral wall portion 14 is located at pipe periphery wall portion 14, thickness Ta is with the thickness Ts of the pipe periphery wall portion 14
90% or less, preferably 80% ratio below exist, as its lower limit, preferably to become 1% or more, more preferably become 5%
The mode of above ratio exists.That is, it is preferred that Ta≤0.9 × Ts and Ta >=0.01 × Ts.It should be noted that cored solder portion 18
More than pipe periphery wall portion 14 wall thickness Ts 90% when, cored solder portion 18 be brazed heating when melt, pipe periphery wall portion 14
Thickness become too thin, cause flat perforated pipe 10 compressive resistance reduce the problems such as.As a result, by being located at cored solder portion 18
The mode of the outer surface side of pipe periphery wall portion 14 is constituted, so that aluminium soldering material is in the exposure of the outer surface of pipe periphery wall portion 14
And exist, it is thus possible to advantageously performance outer surface soldering property.
It should be noted that constituting the above-mentioned of cored solder portion 18 in flat perforated pipe 10 present invention as described above
Al-Si line aluminium alloy is used in the material of aluminium soldering material, it is advantageous that, using following aluminium alloys, the aluminium alloy contains
The Si of 1.0~13.0 mass %, also contain 1.4 mass % Mn below (not including 0 mass %), 0.05~0.30 mass %
Cr, the Zr of 0.05~0.30 mass %, the Ti of 0.05~0.30 mass % and 0.0001~0.1 mass % Sr at least one
Kind, surplus is aluminium and inevitable impurity (such as Cu, Zn, Fe etc.).Herein, it when the content of Si is more than 13.0 mass %, melts
Point drastically reduces, and soldering may be such that base material melts when heating.In addition, soldering property reduces when the content of Si is less than 1.0 mass %.
In addition, when the content of Mn is more than 1.4 mass %, deformation drag when extrusion rises, and there are problems that being difficult to high speed extrusion, furthermore
It may occur to pick up (pick-up) phenomenon when high speed extrusion.In addition, Cr, Zr, Ti and Sr are to keep the crystallization particle diameter after soldering coarse
Change, improve the alloying component of soldering property, when their content is less than defined range among the above, the addition effect of these alloying components
Fruit is insufficient, and on the other hand, when the content of these alloying components is more than above-mentioned prescribed limit, extrusion obtained from casting uses material
In coarse compound significantly generate, therefore the problem of cause its extrudability reduction.It should be noted that as the Al-Si system
Be suitble in aluminium alloy containing alloying component Mn lower limit value, be typically 0.1 mass % or so.
In addition, as at least part for constituting the pipe periphery wall portion 14 and being in flat perforated pipe 10 of the invention
The aluminum pipe material of main part of material other than above-mentioned aluminium soldering material can be used directly in the past based on the flat perforated pipe for squeezing out processing
Manufacture used in aluminum material, for example, the so-called A1000 system pure aluminum material of JIS, A3000 line aluminium alloy material can be suitably used
Material etc., in addition, in order to keep its current potential high, it can also be in these materials containing the Cu of specified amount.Wherein, as such aluminum pipe
The material of material of main part, it is advantageous to use following aluminium alloys, it (does not include 0 matter that the aluminium alloy, which contains 0.7 mass % or less,
Measure %) Cu and 1.4 mass % or less (not including 0 mass %) Mn, Cr also containing 0.05~0.30 mass %, 0.05~
At least one of the Sr of the Zr of 0.30 mass %, the Ti of 0.05~0.30 mass % and 0.0001~0.1 mass %, surplus is
Aluminium and inevitable impurity (such as Si, Fe, Zn etc.).It should be noted that herein, when the content of Cu is more than 0.7 mass %,
Deformation drag when extrusion rises, and there are problems that being difficult to high speed extrusion, furthermore may occur to pick up phenomenon when high speed extrusion.Separately
Outside, when the content of Mn is more than 1.4 mass %, with the above-mentioned Cu the case where in the same manner as, deformation drag when extrusion rises, and exists and is difficult to
The problem of high speed extrusion, and may occur to pick up phenomenon when high speed extrusion.In addition, Cr, Zr, Ti and Sr are the knots made after soldering
Crystal size coarsening, the alloying component for improving soldering property, their content be less than among the above as defined in range when, these alloys at
The additive effect divided is insufficient, on the other hand, when the content of these alloying components is more than above-mentioned prescribed limit, obtained from casting
Extrusion is significantly generated with the coarse compound in material, therefore the problem of cause its extrudability reduction.In addition, these alloying components
In, as the lower limit value of Cu, 0.1 mass % is advantageously generally used, in addition, the lower limit value as Mn, advantageously generally uses
0.1 mass %.
In addition, in the aluminium soldering material, aluminum pipe material of main part of the above-mentioned flat perforated pipe 10 of composition, as above-mentioned conjunction
Surplus other than golden ingredient, aluminium and inevitable impurity (its be contain certainly when manufacturing the material it is each comprising Fe, Zn etc.
The impurity of kind element) in, the total content of these inevitable impurity is limited in usually recognizable range, usually controls
As 0.5 mass % or less, preferably 0.3 mass % ratio below.
In addition, for flat perforated pipe 10 present invention as described above, by using above-mentioned aluminum pipe material of main part
With aluminium soldering material as squeezing out the aluminum material processed and squeezing out processing simultaneously to these materials, to manufacture, these aluminum pipes master
Body material and brazing material are used usually using the composite billet or the multiple bases of combination of core sheath structure.Specifically, using following
The composite billet of structure: there is such as circle, oblong, ellipse, length in inner surface (central part) configuration by aluminium soldering material
Rectangular, semilune, crescent, polygon prismatic shapes and the aluminum pipe material of main part for having optimized sectional dimension, utilize welding
Deng by they engage and it is integrated, thus formed around the core segment formed by the pipe material of main part base by above-mentioned soldering material
The sheath part that material base is constituted.
It should be noted that known various means can be suitably used, for example, available in the manufacture of above-mentioned composite billet
Following methods formed target composite billet: the base formed by aluminium soldering material central part setting prescribed level through hole and shape
At sheath base, then, the core base formed by aluminum pipe material of main part is inserted into the through hole and carries out integrated method；And
Such sheath base is made in the form of being split into two halves, then, configures core base in the vacancy for the sheath base that these are split into two halves,
In the form of such, using welding etc. by whole fixed and integrated method；Etc..
Fig. 2 (a) and (b) in show an example of such composite billet, herein, composite billet 20 forms following structures: in circle
The outside of columnar pipe material of main part base (core base) 22 is integrally equipped with cylindric brazing material base (sheath base) 14.
In addition, being directed to the composite billet 20, the same, tool with the manufacturing situation of previous extrusion flat perforated pipe can be used
There is the mold (so-called diffluence combination die) of multiple extrusions, thus it is flat to obtain target extrusion for the method for being applicable in hot extrusion processing
Antipriming pipe 10, at this point, configuring the composite billet 20 in the following manner and implementing hot extrusion processing: for have with flat porous
The mold for the vertical extrusion that the corresponding mode of multiple flow paths 12 of pipe 10 is arranged, makes the pipe master for being configured at the inside of composite billet 20
Length direction in the defined cross sectional shape of body material (22) is consistent with the length direction of the extrusion of the mold.By using
The extrusion form based on diffluence combination die of composite billet 20, so as to divide the brazing material (24) in composite billet 20 effectively
The peripheral part of the flat pattern for the flat perforated pipe 10 being assigned to can be such that cored solder portion advantageously exposes in pipe outer peripheral surface.
But composite billet 20 as described above to be carried out to hot extrusion processing using conventional method from diffluence combination die and
When manufacturing objective flat perforated pipe 10, the pipe material of main part that the brazing material base 24 in the outside of composite billet 20 can be involved in inside is used
In base 22, the cored solder portion 18 in the flat perforated pipe 10 of formation is easily accessible the aluminum pipe material of main part for constituting pipe periphery wall portion 14
In, thus, wing material is brazed and as during the use of heat exchanger, at the entry site in the cored solder portion 18 into
Row corrosion, may cause the leakage of fluid.
Then, in the present invention, advantageously with the extrusion direction front end side (front shown in such as Fig. 2 (c) in composite billet 20
Side) it is integrally equipped with the form of defined disk-shaped foreboard 26, carries out the method for squeezing out processing from diffluence combination die, by
This, can effectively inhibit or prevent being involved at two end edge portions of the extrusion flat perforated pipe 10 of formation of cored solder portion 18.
That is, in the extrusion processing using such foreboard 26, with the circle with above-mentioned aluminum pipe material of main part same material
Or the state of cricoid foreboard 26 front end of being fixed on above-mentioned composite billet 20 using welding etc. is implemented, in addition, the foreboard 26
Diameter be set as 90% or more and 100% or less for the diameter of above-mentioned composite billet 20 range in.It needs to illustrate
If the diameter of foreboard 26 is 100% bigger than the diameter of composite billet 20, cause to hook when composite billet 20 to be inserted into container
The problems such as hanging, can not squeezing out.In addition, if the diameter of foreboard 26 is 90% smaller than the diameter of composite billet 20, when squeezing out processing, position
In the aluminum pipe material of main part base 22 of rear surface metal and be present in the oxide film thereon of base extexine, foreign matter or soldering material
The brazing material metal isopreference of material base 24 is squeezed out from the gap, it may occur however that two end edge portions for squeezing out flat perforated pipe 10
Be involved in it is bad etc..Furthermore it is preferred that the thickness of foreboard 26 is 5% or more and 30% for the diameter of above-mentioned composite billet 20
Below.Wherein, 10% or more and 25% ratio below is most suitable.When the thickness of foreboard 26 is thinner than 5%, foreboard can not be used
The range of the delay remained in container (dead metal) is fully filled by material, it may occur however that brazing material layer is flat to squeezing out
Being involved in for two end edge portions of flat antipriming pipe 10 is bad, in addition, the material ratios of foreboard 26 become when the thickness of foreboard 26 is more than 30%
It is excessively high, steadily cover the product before squeezing out the outer surface of flat perforated pipe 10 there are brazing material and casts out more than quantitative change etc. and ask
Topic.
It should be noted that as described above, aluminum extruded flat perforated pipe of the invention can suitably serve as heat exchanger
In refrigerant flow path component.Moreover, in the case where aluminum extruded flat perforated pipe of the invention is used as refrigerant path pipe,
For example, being constituted heat exchanger with following structures, the structure has: a pair of of aluminum catch box (header tank), they are each other
It configures at spaced intervals；Multiple aluminum extruded flat perforated pipes, they with the state in width direction frontage and airiness direction, in catch box
Length direction on be arranged parallel to each other between two catch boxes at spaced intervals, and their both ends and two catch boxes
Connection；Aluminum corrugate fin is configured at the flat of between adjacent flat perforated pipe and both ends as outside fin
The outside of flat antipriming pipe is brazed in these flat perforated pipes；With aluminum side plate, it is configured at the outer of the corrugated fin at both ends
Side, and be brazed on the fin.Certainly, it goes without saying that also can be used aluminum extruded flat perforated pipe of the invention be used as in addition to
The refrigerant path pipe in known various heat exchangers outside the heat exchanger of such structure.
Additionally, it is well known that for a pair of of catch box in heat exchanger, refrigerant or coolant liquid are from a catch box
Distribution flows into flat perforated pipe, also, the refrigerant or coolant liquid that flow out from flat perforated pipe are integrated into another catch box
In, for example, as it is known that ground can be used: header plate (header plate) and header plate are opposed to structure made of soldering；It will
Plate benging is shaped to tubulose, and the end that is overlapped to it carries out welding or soldering and the structure that constitutes；And it is extruded into squeezing for tubulose
Outlet pipe；Etc..
More than, detailed statement has been carried out to representative embodiments of the invention, but it is to be understood that, these eventually only
It is example, any restriction specifically described that the present invention is related to by such embodiment cannot be construed to.
In addition, the present invention can the knowledge based on those skilled in the art with increase it is various change, amendment, improvement etc.
Mode is implemented, in addition, it goes without saying that such embodiment then belongs to of the invention without departing from purport of the invention
In scope.
Embodiment
Hereinafter, show representative embodiment of the invention, it is more specifically illustrated by the present invention, but it is to be further understood that
The present invention is not by any restrictions of the record of such embodiment.
Firstly, casting has shown in following table 1 into grouping respectively as the material for manufacturing various flat perforated pipes
At various aluminium soldering material base A~R and with shown in following Table 3 at the various aluminum pipe material of main part base a being grouped as
Then these bases are carried out various combinations, to make various composite billet B1~B32 shown in following table 5, further by~o
Then ground respectively carries out hot extrusion processing to these composite billets, thus obtain opposite with these composite billets shown in following table 5
The various flat perforated pipe T1~T32 answered.In addition, be carried out similarly operation, casting has shown in following table 2 at being grouped as
Aluminium soldering material base S~AA and with shown in following table 4 at the various aluminum pipe material of main part base p~u being grouped as, so
Afterwards, these bases are subjected to various combinations, make various composite billet B33~B52 and monomer base B53 shown in following table 6, further
Then these composite billets and monomer base are respectively carried out hot extrusion processing by ground, thus obtain and these base phases shown in following table 6
Corresponding various flat perforated pipe T33~T53.
Then, using thus obtained various flat perforated pipe T1~T53, implementing (1) below respectively, whether there is or not cored solders
Layer is involved in undesirable evaluation, the length measurment of (2) bad covering part, the measurement of the formation range in (3) cored solder portion, (4) group
Unfavorable condition evaluation when assembling heat exchanger core.
[table 1]
It * include inevitable impurity
[table 2]
It * include inevitable impurity
[table 3]
It * include inevitable impurity
[table 4]
It * include inevitable impurity
[table 5]
[table 6]
Specifically, firstly, each alloying component is adjusted respectively in order to form cored solder portion 18, to provide shown in the table 1
Aluminium soldering material aluminium soldering material base S~AA shown in base A~R and table 2 mode, utilize conventional method, productionVarious DC cast base.On the other hand, in order to form pipe main part, alloying component is adjusted respectively, to provide table
The mode of the aluminum pipe material of main part base p~u shown in base a~o and table 4 of aluminum pipe material of main part shown in 3, as described above
Operation, production DC cast base, then by the obtained base it is circular having a size of 5mm~85mm in the range of processing and forming be rule
The cylindrical body of scale cun.
Also, in the section central portion of above-mentioned brazing material base, being formed can be for pipe material of main part that this is completed the process
The through hole being inserted into base, is embedded in pipe material of main part base to the through hole, in turn, makes these brazing material bases and pipe master
Length direction two end faces of the body material base at them, the fixed engagement using MIG welding, respectively will be shown in table 5 and table 6
Composite billet B1~B32 and B33~B52 be fabricated to section morphology as shown in Figure 2 one composite billet 20.In addition,
It is in the Fig. 3 only formed by pipe material of main part base as monomer base shown in 30 that extrusion shown in table 6, which uses base B53,.It needs
Bright, in Fig. 2 and Fig. 3,22 and 32 be pipe material of main part base, and 24 be brazing material base.
Then, as shown in Fig. 2 (c) or Fig. 3 (c), using welding, by various sizes (diameter and thickness shown in table 5 and table 6
Degree shown with the percentage for the diameter of composite billet) disk-shaped foreboard 26 be fixed on these obtained composite billets
20 or monomer base 30 extrusion direction front end face, the base-foreboard assembly is heated to 500 DEG C with blanket heating, is then used
Extrusion, diffluence combination die same with the rectangular opening (6 flow paths) for being used to form 6 holes, from above-mentioned foreboard 26
Side carries out hot extrusion processing, has thus manufactured the flat more of 6 holes shown in table 5 corresponding with each extrusion base and table 6 respectively
Hole pipe T1~T32 and T33~T53 (integral thickness: 2.0mm, the width in flat direction: 16mm, pipe periphery wall portion and wall part
Wall thickness: 0.25mm).It should be noted that being processed using composite billet B48 and using hot extrusion and manufacturing flat perforated pipe T48
When, since base blocks in container, therefore, it is impossible to carry out hot extrusion processing, therefore can not be made.
(1) evaluation for being involved in unfavorable condition of brazing material layer
The various flat perforated pipes (10) in obtained 6 hole are cut off at 1/2 position for squeezing out length direction, are seen
Examine its section.Photo obtained from the microscopic structure in the section is shot with 25 times of multiplying power that is, using, in the flat perforated pipe
(10) two end edge portions, investigation cored solder portion (18) is involved in state, for whether there is or not be involved in unfavorable condition to be evaluated.Also,
The case where cored solder portion (18) will not be confirmed in any one of two end edge portions, is evaluated as (zero), will be in pipe end edge
Side confirms the case where cored solder portion (18) and is evaluated as (×).
In table 7 and table 8 below, shows and commented respectively for flat perforated pipe T1~T32 and flat perforated pipe T33~T53
The above-mentioned cored solder portion (18) of valence is involved in result obtained from unfavorable condition.It should be noted that with regard to flat perforated pipe T48 and
Speech is not evaluated since hot extrusion processing is terminated in midway.
The result of the cross-section observation are as follows: for flat perforated pipe T1~T32 obtained from being processed as above-mentioned extrusion, appoint
Do not confirm the cored solder portion (18) in pipe end edge in one is involved in unfavorable condition.
On the other hand, just added using composite billet B33, B34, monomer base B53 and hot extrusion of the implementation based on diffluence combination die
For flat perforated pipe T33, T34, T53 obtained from work, closed using the previous alloy without containing cored solder ingredient, pure Al system
The base of gold, thus, any cored solder portion (18) is not present, it is bad not confirm being involved in for cored solder portion (18) in two pipe end edges
Situation.In addition, not finding being involved in for cored solder portion (18) similarly in flat perforated pipe T35~T47, T50, T52.But
It in flat perforated pipe T49 and T51, confirmed: being involved in unfavorable condition in two end edge portions generation cored solder portion (18).By this
A little situations are it is found that since the diameter of the foreboard used, thickness are insufficient, positioned at the table for the pipe main body base for squeezing out direction rear side
Oxide film thereon, foreign matter or the brazing material of layer are preferentially flowed into the metal of the brazing material of base etc., thus in flat perforated pipe
Two end edge portion of width direction occur cored solder portion (18) be involved in it is bad.
(2) length measurment of bad covering part
Using flat perforated pipe T1~T32 and T33~T53 obtained in above-mentioned, it is directed to the length of its bad covering part respectively
Degree is measured.It should be noted that since the base containing cored solder ingredient is not used in flat perforated pipe T33, T34 and T53, and
It is formed by previous alloy, pure Al system alloy, thus not formed cored solder portion (18), in addition, for flat perforated pipe T48, because
The suspension of hot extrusion processing and can not be manufactured, therefore do not evaluated.
Specifically, flat perforated pipe T1~T32 and T33~T53 are directed to, after respective hot extrusion processing, along extrusion
Direction with the length of 1.0m spacing, cross-section observation is carried out in length range, to bad covering part (only before plate material portion
Point, the part that keeps coverage rate excessive because of the influence of preceding plate material) length be measured.Also, in such bad covering
In the length measurment in portion, by the length of bad covering part be 15m or less situation be evaluated as (zero), will be more than 15m the case where comment
Valence is (×), the results are shown in following table 7 and table 8.
[table 7]
[table 8]
For the result as shown in the table 7 it is found that for flat perforated pipe T1~T32, the length of bad covering part is 15m
Below, it is thus identified that being involved in for brazing material layer can be effectively inhibited.
On the other hand, for flat perforated pipe T33, T34 and T53, due to being using without containing cored solder ingredient
It is managed obtained from base, does not find the presence of any bad covering part, in addition, in flat perforated pipe T35~T47 and T52, although
Bad covering part is confirmed, but the length of bad covering part is 15m or less.But in flat perforated pipe T49~T51, it is thus identified that
The length of bad covering part is more than 15m, especially flat perforated pipe T51, complete until squeezing out the extrusion tail portion completed
In the range of long (about 60m), bad covering part has been confirmed.
(3) measurement of the formation range in cored solder portion
The various flat perforated pipes (10) in 6 holes obtained in will be above-mentioned are cut off at 1/2 position for squeezing out length direction,
Observe its section.Photo obtained from the microscopic structure in the section is shot with 25 times of multiplying power that is, using, measures the pricker with ruler
The region of solder portion (18) thus measures the formation range of cored solder portion (18).In addition, in the shape of such cored solder portion (18)
At in the measurement of range, by the formation range of cored solder portion (18) is pipe peripheral part perimeter L 100% or less and 50% or more
Situation is evaluated as (zero), by be less than the perimeter 50% the case where be evaluated as (×).In addition, by the pricker in pipe periphery wall portion (14)
90% or less situation of the thickness with a thickness of pipe periphery wall portion (14) of solder portion (18) is evaluated as (zero), will be more than 90%
Situation is evaluated as (×).
In table 9 and table 10 below, above-mentioned cored solder portion is measured for flat perforated pipe T1~T32 and T33~T53
(18) result obtained from formation range in pipe peripheral part exposure cored solder portion (18) be grown in week the smallest value and
The form of the maximum gauge in the cored solder portion (18) in pipe periphery wall portion (14) is shown.
[table 9]
[table 10]
The result of the cross-section observation confirmed: in flat perforated pipe T1~T32 obtained from being processed as above-mentioned extrusion
Pipe peripheral part whole perimeters in, the cored solder portion (18) formed by brazing material base is with the 50% of pipe peripheral part perimeter L
Above and 100% ratio below exposes.In addition it has found, the thickness in the cored solder portion (18) formed in pipe periphery wall portion (14)
Exist with the range of 90% thickness below of the thickness of pipe periphery wall portion (14), in tube outer surface exposure.In addition, just so
It for flat perforated pipe obtained from hot extrusion (10), further acknowledges, on its extrusion length direction, by brazing material base shape
At cored solder portion (18) steadily exposed in the outer surface of pipe peripheral part.
On the other hand, just implement the hot extrusion based on diffluence combination die using composite billet B33, B34, monomer base B53 to add
For flat perforated pipe T33, T34 and T53 obtained from work, due to using by the previous alloy, pure without containing cored solder ingredient
Therefore the base that Al system alloy is formed, does not find the exposure in tube outer surface because any cored solder portion (18) may be not present yet.Separately
Outside, for using flat perforated pipe T51 obtained from composite billet B51 shown in table 6, the exposure portion of cored solder portion (18) is
The 100% of pipe peripheral part perimeter L, the thickness of pipe periphery wall portion (14) are 93% at most thick position.In addition, just using table 6
Shown in composite billet B35~B47, B49, B50, B52, obtained from the above method flat perforated pipe T35~T47, T49,
For T50, T52, the exposure portion of cored solder portion (18) is the 50% of pipe peripheral part perimeter L hereinafter, pipe periphery wall portion (14)
Thickness at most thick position be 10~20%.It should be noted that about flat perforated pipe T48, composite billet shown in table 6
Base blocks when the hot extrusion processing of B48, does not obtain target flat perforated pipe, thus is not evaluated.
(4) evaluation of heat exchanger core unfavorable condition when assembled
Flat perforated pipe T1~T32 and T33~T53 obtained in will be above-mentioned is as material to be tested, to each flat perforated pipe
Fin is installed, and implements soldering heating, evaluate whether there is or not unfavorable condition when to production heat exchanger core.
Specifically, be directed to flat perforated pipe T1~T32 and T33~T53, each self installation corrugating processing at spacing of fin
The size of 3mm, fin height 7mm with a thickness of 80 μm of naked fin, it is contemplated that they are used as the heat-transfer pipe in heat exchanger
When, for fin engagement soldering heating and implement heat treatment in 600 DEG C × 3 minutes, be brazed, to form hot friendship
Then the fin cutting for being engaged in flat perforated pipe of each heat exchanger core is removed with cutting machine, is utilized by parallel operation core
Visually the unfavorable condition situation occurred of the connecting state of fin and flat perforated pipe is confirmed.
In table 11 and table 12 below, it is shown respectively using flat perforated pipe T1~T32 and T33~T53 as material to be tested
Come make heat exchanger core, to soldering heating after heat exchanger core fin connecting state and flat perforated pipe it is bad
The result that the situation of happening is verified.
[table 11]
| Flat perforated pipe type | Unfavorable condition when core makes | Evaluation |
| T1 | It does not confirm | ○ |
| T2 | It does not confirm | ○ |
| T3 | It does not confirm | ○ |
| T4 | It does not confirm | ○ |
| T5 | It does not confirm | ○ |
| T6 | It does not confirm | ○ |
| T7 | It does not confirm | ○ |
| T8 | It does not confirm | ○ |
| T9 | It does not confirm | ○ |
| T10 | It does not confirm | ○ |
| T11 | It does not confirm | ○ |
| T12 | It does not confirm | ○ |
| T13 | It does not confirm | ○ |
| T14 | It does not confirm | ○ |
| T15 | It does not confirm | ○ |
| T16 | It does not confirm | ○ |
| T17 | It does not confirm | ○ |
| T18 | It does not confirm | ○ |
| T19 | It does not confirm | ○ |
| T20 | It does not confirm | ○ |
| T21 | It does not confirm | ○ |
| T22 | It does not confirm | ○ |
| T23 | It does not confirm | ○ |
| T24 | It does not confirm | ○ |
| T25 | It does not confirm | ○ |
| T26 | It does not confirm | ○ |
| T27 | It does not confirm | ○ |
| T28 | It does not confirm | ○ |
| T29 | It does not confirm | ○ |
| T30 | It does not confirm | ○ |
| T31 | It does not confirm | ○ |
| T32 | It does not confirm | ○ |
[table 12]
| Flat perforated pipe type | Unfavorable condition when core makes | Evaluation |
| T33 | Fin does not engage | × |
| T34 | Fin does not engage | × |
| T35 | Base material melting | × |
| T36 | Fin does not engage | × |
| T37 | The unassembled situation of fin is more | × |
| T38 | The unassembled situation of fin is more | × |
| T39 | The unassembled situation of fin is more | × |
| T40 | The unassembled situation of fin is more | × |
| T41 | The unassembled situation of fin is more | × |
| T42 | The unassembled situation of fin is more | × |
| T43 | The unassembled situation of fin is more | × |
| T44 | The unassembled situation of fin is more | × |
| T45 | The unassembled situation of fin is more | × |
| T46 | The unassembled situation of fin is more | × |
| T47 | The unassembled situation of fin is more | × |
| T48 | It can not squeeze out | - |
| T49 | Through hole from the portion that is involved in | × |
| T50 | The unassembled situation of fin is more | × |
| T51 | Through hole from the portion that is involved in and peripheral wall portion | × |
| T52 | The unassembled situation of fin is more | × |
| T53 | Fin does not engage | × |
By the result of the table 11 it is found that for flat perforated pipe T1~T32, in the heat exchanger core after soldering heating
It does not find that any fin engagement is bad, and does not find any unfavorable condition in flat perforated pipe.Consequently found that just flat
For antipriming pipe T1~T32, due to cored solder portion (18) presence and show good fin engaged configuration, and conduct
Soldering is good with flat perforated pipe.
It in contrast, is Jin Shiyong by without containing pricker shown in the table 12 for flat perforated pipe T33, T34 and T53
The flat perforated pipe for the material that the previous material and pure Al system alloy of solder compositions are formed, thus, the heat after soldering heating is handed over
In parallel operation core, fin is not engaged.In addition, for flat perforated pipe T36, since the Si content as cored solder ingredient is 0
Quality %, thus fin does not engage.In addition, Si content is 14.0 mass % for the flat perforated pipe T35 shown in the table 12,
Its content be it is a large amount of, thus, cored solder portion (18) melt when soldering heating, discovery through hole caused by melting in base material.This
Outside, it for flat perforated pipe T37~T47, T50, T52, has found that while a part of fin engagement but non-joint portion is wider.This
Outside, for flat perforated pipe T49 and T51, it is being involved in bad portion for the brazing material layer found in two vertex angle parts, is brazed
When heating, cored solder portion (18) melting, discovery generates through hole.Particularly, in flat perforated pipe T51, in addition to flat more
The brazing material layer generated in the both ends of hole pipe is involved in outside bad portion, and pipe periphery wall portion (14) also melts, and discovery is led by melting
The through hole of cause.
Description of symbols
10 flat perforated pipe, 12 flow path
14 pipe periphery wall portion, 16 inner partition portion
18 cored solder portion, 20 composite billet
22 pipe material of main parts, 24 brazing material base of base
26 foreboard, 30 monomer base
32 pipe material of main parts, 34 foreboard of base
Claims (8)
1. the aluminum extruded flat perforated pipe with excellent soldering, which is characterized in that it is processed by the extrusion of aluminum material
Obtained from, it is whole be in flat cross-sectional shape extruding pipe, the aluminum extruded flat perforated pipe have independently of one another with
Multiple flow paths that tube axial direction extends parallel to, and these flow paths across the inner partition portion extended on tube axial direction and
The length direction of flat cross-sectional shape arranges,
The aluminum extruded flat perforated pipe is by using aluminum pipe material of main part and the aluminium soldering formed by Al-Si line aluminium alloy
Material is formed as the extrusion processing of the aluminum material, also,
The one of at least flat part of the aluminium soldering material in the whole region or the pipe periphery wall portion of pipe periphery wall portion
Part exposure, to form cored solder portion, also, the cored solder portion is with the perimeter of the pipe periphery wall portion in pipe cross section
50% or more and 100% ratio below exist, on the other hand, the cored solder portion positioned at pipe periphery wall portion is with the pipe
The ratio below of the 90% of the thickness of periphery wall portion exists.
2. as described in claim 1 with the aluminum extruded flat perforated pipe of excellent soldering, which is characterized in that
The aluminium soldering material is formed by following aluminium alloys, and the aluminium alloy contains the Si of 1.0~13.0 mass %, is also contained
1.4 mass % Mn below, the Cr of 0.05~0.30 mass %, the Zr of 0.05~0.30 mass %, 0.05~0.30 mass %
Ti and 0.0001~0.1 mass % one or more of Sr, surplus be aluminium and inevitable impurity,
On the other hand, the aluminum pipe material of main part is formed by following aluminium alloys, and the aluminium alloy contains 0.7 mass % Cu below
And 1.4 mass % Mn below, the Zr of Cr, 0.05~0.30 mass % also containing 0.05~0.30 mass %, 0.05~
One or more of the Sr of the Ti of 0.30 mass % and 0.0001~0.1 mass %, surplus is for aluminium and inevitably
Impurity.
3. as claimed in claim 1 or 2 with the aluminum extruded flat perforated pipe of excellent soldering, wherein described squeeze out adds
The aluminum material of work is the composite billet being made of the aluminum pipe material of main part and the aluminium soldering material.
4. as claimed in claim 3 with the aluminum extruded flat perforated pipe of excellent soldering, wherein the composite billet has
The core sheath structure of one, the integrated core sheath structure include the core base formed by the aluminum pipe material of main part and are located at described
The sheath base formed by the aluminium soldering material around core base.
5. according to any one of claims 1 to 4 with the aluminum extruded flat perforated pipe of excellent soldering, wherein institute
Extruding pipe is stated to process and formed by using the extrusion of the aluminum material of diffluence combination die.
6. the manufacturing method of the aluminum extruded flat perforated pipe with excellent soldering is any in manufacturing claims 1 to 5
The method of aluminum extruded flat perforated pipe described in, which is characterized in that
Using the composite billet being made of aluminum pipe material of main part and aluminium soldering material and with the aluminum pipe material of main part same material
Foreboard, the aluminium soldering material formed by Al-Si line aluminium alloy, also, so that the diameter of the foreboard relative to described multiple
It is 90% or more and 100% or less for the diameter of conjunction base and makes the thickness of the foreboard relative to the straight of the composite billet
It is constituted for diameter for 5% or more and 30% mode below, which is configured to the extrusion direction front side of the composite billet,
And extrusion processing is carried out together to these foreboards and composite billet using diffluence combination die.
7. the manufacturing method of the aluminum extruded flat perforated pipe with excellent soldering as claimed in claim 6, wherein described
Composite billet has a core sheath structure of one, the integrated core sheath structure include the core base formed by the aluminum pipe material of main part,
And the sheath base formed by the aluminium soldering material being located at around the core base.
8. aluminum-made heat exchanger, which is characterized in that be configured to comprising aluminum extruded flat described in any one of claims 1 to 5
The aluminum outside fin of antipriming pipe and soldered joint in the outer surface of the aluminum extruded flat perforated pipe.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-023890 | 2017-02-13 | ||
| JP2017023890 | 2017-02-13 | ||
| PCT/JP2018/004424 WO2018147376A1 (en) | 2017-02-13 | 2018-02-08 | Aluminum extruded flat perforated pipe exhibiting excellent brazing properties, and method for producing same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110290882A true CN110290882A (en) | 2019-09-27 |
| CN110290882B CN110290882B (en) | 2021-07-13 |
Family
ID=63108064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880011508.8A Active CN110290882B (en) | 2017-02-13 | 2018-02-08 | Aluminum extruded flat multi-hole tube having excellent brazeability and method for manufacturing the same |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPWO2018147376A1 (en) |
| CN (1) | CN110290882B (en) |
| DE (1) | DE112018000796T5 (en) |
| WO (1) | WO2018147376A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116922106B (en) * | 2023-09-13 | 2024-01-05 | 江苏瑞邦复合材料科技有限公司 | Forming method and forming equipment for composite flat wire of wind generating set |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5319957A (en) * | 1976-07-02 | 1978-02-23 | Nippon Keikinzoku Sougou Kenki | Dies material extruking by scrap |
| JPS6397309A (en) * | 1986-10-13 | 1988-04-28 | Nippon Light Metal Co Ltd | Production of clad pipe |
| JP2003181524A (en) * | 2001-10-01 | 2003-07-02 | Sumitomo Light Metal Ind Ltd | Indirect extrusion method for clad material |
| US20060118282A1 (en) * | 2004-12-03 | 2006-06-08 | Baolute Ren | Heat exchanger tubing by continuous extrusion |
| CN102581055A (en) * | 2012-03-09 | 2012-07-18 | 无锡凯博易机电科技有限公司 | Extrusion die for preparation of flat pipes of micro-channel heat exchangers |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH024485A (en) | 1988-06-21 | 1990-01-09 | Toshiba Corp | Apparatus for processing mail |
| JPH108795A (en) | 1996-06-20 | 1998-01-13 | Takigen Mfg Co Ltd | Drill breakage prevention lock |
| JPH10197175A (en) | 1997-01-07 | 1998-07-31 | Sumitomo Light Metal Ind Ltd | Extruded multi-hole aluminum tube for heat exchanger and manufacture thereof |
| JPH10258356A (en) | 1997-03-18 | 1998-09-29 | Sumitomo Light Metal Ind Ltd | Aluminum extrusion multiple-perforated tube for brazing, and its manufacture |
| JP2002172485A (en) | 2000-12-04 | 2002-06-18 | Furukawa Electric Co Ltd:The | Aluminum extrusion multi-hole pipe for brazing excellent in corrosion resistance |
| WO2017026510A1 (en) * | 2015-08-11 | 2017-02-16 | 株式会社Uacj | Aluminum extruded flat perforated pipe having excellent internal surface anticorrosion property and aluminum heat exchanger using same |
-
2018
- 2018-02-08 JP JP2018567494A patent/JPWO2018147376A1/en active Pending
- 2018-02-08 DE DE112018000796.0T patent/DE112018000796T5/en active Pending
- 2018-02-08 CN CN201880011508.8A patent/CN110290882B/en active Active
- 2018-02-08 WO PCT/JP2018/004424 patent/WO2018147376A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5319957A (en) * | 1976-07-02 | 1978-02-23 | Nippon Keikinzoku Sougou Kenki | Dies material extruking by scrap |
| JPS6397309A (en) * | 1986-10-13 | 1988-04-28 | Nippon Light Metal Co Ltd | Production of clad pipe |
| JP2003181524A (en) * | 2001-10-01 | 2003-07-02 | Sumitomo Light Metal Ind Ltd | Indirect extrusion method for clad material |
| US20060118282A1 (en) * | 2004-12-03 | 2006-06-08 | Baolute Ren | Heat exchanger tubing by continuous extrusion |
| CN102581055A (en) * | 2012-03-09 | 2012-07-18 | 无锡凯博易机电科技有限公司 | Extrusion die for preparation of flat pipes of micro-channel heat exchangers |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018147376A1 (en) | 2018-08-16 |
| CN110290882B (en) | 2021-07-13 |
| JPWO2018147376A1 (en) | 2019-12-12 |
| DE112018000796T5 (en) | 2019-12-05 |
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