CN110290884A - The excellent aluminum extruded flat perforated pipe of outside surface anticorrosion corrosion and use aluminum-made heat exchanger made of it - Google Patents
The excellent aluminum extruded flat perforated pipe of outside surface anticorrosion corrosion and use aluminum-made heat exchanger made of it Download PDFInfo
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- CN110290884A CN110290884A CN201880011537.4A CN201880011537A CN110290884A CN 110290884 A CN110290884 A CN 110290884A CN 201880011537 A CN201880011537 A CN 201880011537A CN 110290884 A CN110290884 A CN 110290884A
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- pipe
- aluminum
- sacrificial anode
- flat perforated
- perforated pipe
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Classifications
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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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
- C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
- C23F13/06—Constructional parts, or assemblies of cathodic-protection apparatus
- C23F13/08—Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto
- C23F13/10—Electrodes characterised by the structure
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
- C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
- C23F13/06—Constructional parts, or assemblies of cathodic-protection apparatus
- C23F13/08—Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto
- C23F13/12—Electrodes characterised by the material
- C23F13/14—Material for sacrificial anodes
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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
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
- F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
- F28F19/06—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings of metal
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F2201/00—Type of materials to be protected by cathodic protection
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F2213/00—Aspects of inhibiting corrosion of metals by anodic or cathodic protection
- C23F2213/30—Anodic or cathodic protection specially adapted for a specific object
- C23F2213/32—Pipes
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- 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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2275/00—Fastening; Joining
- F28F2275/04—Fastening; Joining by brazing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Geometry (AREA)
- Prevention Of Electric Corrosion (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Extrusion Of Metal (AREA)
Abstract
In aluminum extruded flat perforated pipe, the anticorrosive property of its pipe outer peripheral surface is effectively improved.Using aluminum pipe material of main part and electrochemistry aluminium sacrificial anode material lower than it and by squeezing out in the aluminum extruded flat perforated pipe 10 that processing is formed, aluminium sacrificial anode material exposure within the scope of the complete cycle of the pipe outer perimeter L of the outer surface side of pipe peripheral wall portion 14 or in its at least a part of flat part, to form sacrificial anode portion 18.
Description
Technical field
It is handed over the present invention relates to the excellent aluminum extruded flat perforated pipe of outside surface anticorrosion corrosion and using aluminum heat made of it
Parallel operation, more particularly to heat exchanger (the especially automobile heat exchangers such as air conditioning for automobiles, radiator) can be suitably served as
Heat-transfer pipe, the aluminum extruded flat perforated pipe of heat exchanger that outside surface anticorrosion corrosion is excellent.
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 passage, separately
On the one hand, will be covered with Al-Si system aluminium solder aluminum fin-stock installation, soldering be fixed on it is rectangular with the refrigerant path pipe
On direction, heat exchanger is thus constituted, then, by flowing the air as heat-exchange fluid along such fin, from
And heat exchange is carried out between refrigerant and air.
In addition, as the extrusion flat perforated pipe thus used, generally use to the base (billet) of aluminum or aluminum alloy into
Row tap hole is squeezed out and is managed obtained from (porthole extrusion), for example, Japanese Unexamined Patent Publication 6-142755 bulletin (patent
Document 1), Japanese Unexamined Patent Publication 5-222480 bulletin (patent document 2), disclose in WO2013/125625 (patent document 3) etc.
Show the flat perforated pipe of various section morphologies.
However, function as the heat-transfer pipe of the heat exchanger, for flat perforated pipe, led to as obtained from squeezing out processing
Often, any anti-corrosion treatment is not carried out on the surface of its pipe peripheral part, accordingly, there exist corrosion such problems occurs, then, if
The etch pit etc. that perforation tube wall is generated because of the progress of such corrosion, then will lead to the function completely lost as heat exchanger
Energy.
Therefore, in such heat exchanger, in order to prevent squeeze out flat perforated pipe tube outer surface corrosion, always with
Come, using following methods, that is, flat perforated pipe is being squeezed out by the methods of thermal spraying (thermal spraying) or coating
Zn is adhered on surface in advance, and the soldering heating after utilizing spreads Zn, at this point, the Zn diffusion layer phase formed on pipe surface layer for
It plays a role for the tube layer in more deep as sacrificial anode in contrast, inhibits the corrosion to thickness of pipe wall direction, as a result,
Realize the perforation life-time dilatation of pipe.Then it in this case, for squeezing out flat perforated pipe, must carry out after the extrusion
The Zn such as the thermal spraying or coating of Zn attachment process must carry out the coating work for being brazed required fluoride flux in turn later
Sequence, or the solder flux painting process to entire core must be carried out after being installed on heat exchanger core, therefore, it is impossible to avoid making
The increase of process is made, existing leads to problems such as manufacturing cost rise.
Therefore, as above-mentioned one of extrusion flat perforated pipe, such as above-mentioned Japanese Unexamined Patent Publication 5-222480 bulletin (patent
Document 2) in also indicate that, propose following methods as a countermeasure, that is, pass through the aluminium solely formed using special component
Alloy, and extrusion processing is carried out to its base, so that manufacture has the flat perforated pipe of anticorrosive property appropriate, but resistance in outer surface
It is insufficient in terms of corrosivity, meet the requirement that high anticorrosive property, cost in recent years reduce with being not only unable to fully, moreover, by
Entire pipe is constituted in the aluminium alloy with specific materials, therefore there is also the aluminium conjunctions that the characteristic of obtained pipe is formed by the particular alloy
Gold and be restricted such problems.
It should be noted that proposing following methods in Japanese Unexamined Patent Application 63-97309 bulletin (patent document 4), that is,
It is compound using being made of aluminium core material forming material and surface layer material forming material (it is formed by Al-Si system aluminium brazing alloy material)
Base (composite billet), simultaneously carries out extrusion processing, thus manufactures the outer surface flat part covering to pipe peripheral wall portion
Pipe is covered made of brazing material layer, but such covering pipe does not have sacrificial anode effect, does not have outside surface anticorrosion corrosion.
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 6-142755 bulletin
Patent document 2: Japanese Unexamined Patent Publication 5-222480 bulletin
Patent document 3:WO2013/125625
Patent document 4: Japanese Unexamined Patent Application 63-97309 bulletin
Summary of the invention
Subject to be solved by the invention
In these cases, in order to make it in aluminum extruded flat perforated pipe obtained from processing as the extrusion of aluminum material
The appearance surface corrosive of pipe peripheral part improves, and present inventor has made intensive studies, as a result, it has been found that, by using logical
Normal aluminum pipe material of main part and Al-Zn system aluminium sacrificial anode material is as the aluminum material for squeezing out processing and simultaneously carries out hot extrusion
Process out, thus make the Al-Zn system aluminium sacrificial anode material obtained aluminum extruded flat perforated pipe pipe peripheral part advantageously
Exposure, is capable of forming sacrificial anode portion, moreover, the sacrificial anode effect played by means of the presence in the sacrificial anode portion,
Can the pipe peripheral part to aluminum extruded flat perforated pipe assign excellent outside surface anticorrosion corrosion.
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 that flat cross-sectional shape is presented, its pipe periphery is effectively improved
The anticorrosive property in portion, in addition, another project is to provide the anticorrosion for improving by sacrificial anode effect and significantly pipe peripheral part
Property aluminum extruded flat perforated pipe and the aluminum-made heat exchanger excellent using anticorrosive property obtained from it.
Means for solving the problems
Then, in order to solve the above problems, the aluminum extruded flat perforated pipe that surface anticorrosion corrosion is excellent other than the present invention is made
For its purport, the aluminum extruded flat perforated pipe is characterized in that, for as obtained from the processing of the extrusion of aluminum material, entirety
The extruding pipe of flat cross-sectional shape is presented, the aluminum extruded flat perforated pipe has parallel with tube axial direction independently of one another
Multiple flow paths that ground extends, and these flow paths are across the inner partition portion extended on tube axial direction and in the length of flat pattern
Direction arrangement is spent,
The aluminum extruded flat perforated pipe is by using aluminum pipe material of main part and electrochemistry than the aluminum pipe main body material
Expect what low aluminium sacrificial anode material was formed as the extrusion processing of above-mentioned aluminum material, also,
The one of whole region of the above-mentioned aluminium sacrificial anode material in pipe outer peripheral surface or at least flat part in pipe outer peripheral surface
Part exposure, to form sacrificial anode portion.
It should be noted that in the present invention, it is advantageous in pipe cross section in addition to above-mentioned inner partition portion
Pipe peripheral wall portion, above-mentioned sacrificial anode portion exist with the 90% of the thickness of pipe peripheral wall portion ratio below.
In addition, for the present invention, it is preferred that above-mentioned sacrificial anode portion is in pipe cross section, with above-mentioned pipe periphery
The ratio below of 50% or more and the 100% of the perimeter in face exists, and in the exposure of pipe outer peripheral surface.
In addition, for one of preferred embodiment of aluminum extruded flat perforated pipe of the invention, above-mentioned aluminium sacrificial anode material
Electrochemistry (electrochemical potential) it is lower than above-mentioned aluminum pipe material of main part, potential difference be preferably 5mV with
Upper and 300mV or less.
In addition, adding for one of other preferred embodiments of aluminum extruded flat perforated pipe of the invention as above-mentioned extrusion
The aluminum material of work is using made of the composite billet being made of above-mentioned aluminum pipe material of main part and above-mentioned aluminium sacrificial anode material.
In addition, above-mentioned composite billet has the core sheath structure of one, the core sheath for another preferred embodiment of the invention
Structure 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 sacrificial anode material
The sheath base of formation.
In addition, above-mentioned extruding pipe is usually combined by using shunting for aluminum extruded flat perforated pipe of the invention
The extrusion of the above-mentioned aluminum material of mould (porthole die) is processed and is formed.
It should be noted that for one of preferred embodiment of aluminum extruded flat perforated pipe of the invention, as above-mentioned aluminium
Pipe material of main part uses the so-called A1000 system pure aluminum material of JIS or A3000 line aluminium alloy material.
In addition, for one of other preferred embodiments of the invention, as above-mentioned aluminium sacrificial anode material, using containing Zn
Aluminum alloy materials.
In addition, for the present invention, also using aluminum-made heat exchanger as its purport, the feature of the aluminum-made heat exchanger exists
In being configured to comprising aluminum extruded flat at this according to aluminum extruded flat perforated pipe and soldered joint present invention as described above
The aluminum outside fin of the outer surface of antipriming pipe.
The effect of invention
As a result, in the aluminum extruded flat perforated pipe for being configured to composition of the invention, formed by aluminium sacrificial anode material
Sacrificial anode portion the aluminum extruded flat perforated pipe pipe outer peripheral surface whole region or in at least flat of pipe outer peripheral surface
A part exposure in smooth portion exists, and therefore, by the sacrificial anode effect based on the sacrificial anode material, can effectively improve
Outside surface anticorrosion corrosion, thereby, it is possible to be advantageously used for the excellent heat of the anticorrosive property of the tube outer surfaces such as radiator, heater side
The heat-transfer pipe of exchanger.
In addition, for aluminum extruded flat perforated pipe of the invention, by aluminum pipe material of main part and aluminium sacrificial anode material structure
At, and formed by squeezing out processing while both materials, therefore, the spy of pipe can be ensured using aluminum pipe material of main part
Property, effectively play outside surface anticorrosion corrosion using aluminium sacrificial anode material simultaneously, thus, it may have can advantageously improve mesh
Mark squeezes out the advantages of design freedom of flat perforated pipe.
In addition, just using aluminum extruded flat perforated pipe of the invention, it being assembled with aluminum outside fin and utilizes soldering
Heating is engaged, for the aluminum-made heat exchanger to constitute, and the excellent outer surface of the aluminum extruded flat perforated pipe is passed through
Anti-corrosion property, the anticorrosive property of heat exchanger also can be improved advantageously.
Detailed description of the invention
[Fig. 1] is the cross section explanatory diagram for schematically showing an example of aluminum extruded flat perforated pipe according to the invention, (a)
Indicate its overall diagram, (b) figure shown to amplify a part of its width direction central portion, (c) being will be with different-thickness
Mode formed sacrificial anode portion example width direction end a part amplification and the cross section explanatory diagram that shows.
[Fig. 2] is the explanatory diagram for showing the cross section of composite billet used in embodiment.
[Fig. 3] is the explanatory diagram for showing the cross section of monomer base used in embodiment.
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, flat perforated pipe 10 of the invention is that entirety is in
The extruding pipe of the aluminum material of existing flat cross-sectional shape, have extended parallel to independently of one another with tube axial direction by square
Multiple flow paths 12 that the hole of shape shape is formed, and these multiple flow paths 12 are formed in pipe width direction, in other words pancake
Structure made of being arranged at intervals on the length direction (left and right directions in figure) of shape.In addition, the flat perforated pipe 10
Corresponding upper and lower surfaces be respectively flat surface, samely, using soldering etc. joint methods will by aluminium or its
Plate fin as is known (plate fins) that alloy is formed, external wing as corrugated fin (corrugated fins)
Piece (not shown) is installed on the upper and lower surfaces, can be used as heat exchanger use.It should be noted that with regard to the cross of flow path 12
Be herein rectangular shape for cross sectional shape, but can also using the shapes such as known circle, ellipse, triangle, trapezoidal,
Or various shape obtained from combining them.
Moreover, for the present invention, in the flat perforated pipe 10 of such structure, by Fig. 1 (a) it is found that by aluminium sacrifice
The sacrificial anode portion 18 that anode material is formed is in the complete cycle of the outer peripheral surface of its pipe peripheral wall portion 14 or a part of at least flat part
On the other hand (herein is in complete cycles) exposure is not exposing the position for having the sacrificial anode portion 18, is including being located at adjacent stream
Around the flow path 12 including inner partition portion 16 between road 12,12, there are common aluminum pipe material of main part, so as to
Keep the characteristic of pipe.It should be noted that herein, as shown, pipe peripheral wall portion 14 constitutes the periphery wall of flat perforated pipe 10, needle
To each flow path 12, functioned as external wall part.
In addition, for the sacrificial anode portion 18 formed in pipe peripheral wall portion 14, it is shown positioned at pipe peripheral wall portion in such as Fig. 1 (b)
In the case where 14, thickness Ta exists with the 90% or less of the thickness Ts of the pipe peripheral wall portion 14, preferably 80% ratio below, makees
For its lower limit, preferably to become 1% or more, more preferably exist in a manner of as 5% or more ratio.Namely it is preferred that Ta
≤ 0.9 × Ts and Ta >=0.01 × Ts.It should be noted that if the thickness Ta in sacrificial anode portion 18 is more than pipe peripheral wall portion 14
The 90% of wall thickness Ts, the then Zn contained in sacrificial anode portion 18 become easy the thickness for diffusing to pipe peripheral wall portion 14 when being brazed and heating
It spends in entirety, after the corrosion losses in sacrificial anode portion 18, is easy to generate perforation corrosion in pipe peripheral wall portion 14, and pipe peripheral wall
The thickness in portion 14 becomes too thin, and cause flat perforated pipe 10 compressive resistance reduce the problems such as.Sun is sacrificed by being formed as a result,
Pole portion 18 is constituted existing for the periphery surface side of pipe peripheral wall portion 14 with specific thickness, thus by sacrificial anode effect, in pipe week
Preferentially corroded in wall portion 14, thus, it is possible to advantageously assign excellent outside surface anticorrosion corrosion to pipe peripheral part.
In addition, as described above, sacrificial anode portion 18 the pipe full circumference L of flat perforated pipe 10 entire scope or
The outer surface side of its at least pipe peripheral wall portion 14 of a part of flat part exposes, for its exposure range, preferably suitable
It is constituted in the mode of exposure in 50% or more of full circumference L and 100% or less range of pipe outer peripheral surface, advantageously with preferred
60% or more, more preferable 70% or more.As a result, by making sacrificial anode portion 18 in 50% or more the region model of pipe full circumference L
Interior exposure is enclosed, so as to more advantageously show by sacrificial anode effect bring anticorrosive property, particularly as most preferably
State, as shown in Fig. 1 (a), be sacrificial anode portion 18 in the entire scope of pipe full circumference L there are the case where.It needs to illustrate
, without keeping the thickness in the sacrificial anode portion 18 in pipe full circumference L all the same within the scope of whole exposed regions, for example,
It can make the exposure of sacrificial anode portion 18 in pipe circumferential direction with different-thickness ratio as shown in Fig. 1 (c).Furthermore it is preferred that making
Such sacrificial anode portion 18 is continuously exposed relative to pipe full circumference L, but other following situations are also: not connect locally
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.
It should be noted that the electrochemistry of aluminium sacrificial anode material used in the present invention is lower than aluminum pipe material of main part.
Therefore, the potential difference of these materials is more than 0mV, and the potential difference is preferably in the range of 5mV or more and 300mV or less.Pass through
Make the potential difference 5mV or more, to be easy reliably to play sacrificial anode effect under more harsh corrosive environment.
On the other hand, when potential difference is more than 300mV, sacrificial anode effect becomes significantly to cause the corrosion of sacrificial anode material to consume change
The problems such as violent.As a result, by making flow path 12 in sacrificial anode portion 18 and pipe peripheral wall portion 14, being formed by aluminum pipe material of main part
Side etc. is compared to low in terms of current potential, so as to play effective sacrificial anode effect, the anticorrosive property of stream inner surface
It can more advantageously present.
In addition, just constituting includes that (it is located at adjacent stream in inner partition portion 16 in flat perforated pipe 10 as described above
Between road 12,12) including flow path 12 around aluminum pipe material of main part for, can be used directly in the past based on squeeze out processing
Aluminum material used in the manufacture of flat perforated pipe, for example, the so-called A1000 system pure aluminum material of JIS, A3000 system aluminium can be used
Alloy material etc., in addition, specified amount can also be contained in such aluminum material (for example, 0.1~0.7 in order to enable current potential is high
Quality % or so) Cu as alloying component.In addition, being provided with for the sacrificial anode material in sacrificial anode portion 18, can be used
Electrochemistry is lower than above-mentioned pipe material of main part, in other words low known aluminum alloy materials of natural potential, for example, can be used and include
Aluminium alloy etc. of specified amount (usually 0.1~10 mass % or so) Zn as alloying component.
In addition, for flat perforated pipe 10 present invention as described above, by using above-mentioned pipe material of main part and
Sacrificial anode material squeezes out processing simultaneously from diffluence combination die as the aluminum material for squeezing out processing and by these materials, thus
It is manufactured, these pipe material of main parts and sacrificial anode material use usually in the form of the composite billet of core sheath structure.It is specific and
Speech, uses the composite billet of following structures, that is, the hollow portion (hollow in the inside (central part) for being set to sacrificial anode material
Portion), configuration have cross sectional shape corresponding with the hollow portion (such as rectangular shape (including corner be curvilinear situation
Inside), circle, oblong, ellipse, oblong and ellipse combination, polygon etc.) and optimized sectional dimension
Pipe material of main part, it is using welding etc. that their engagements are integrated, as a result, around the core segment formed by pipe material of main part
The sheath part formed by sacrificial anode material is integrally formed.
It should be noted that known various means can be used in the manufacture of such composite billet, for example, under can passing through
State method formed target composite billet: the base formed by sacrificial anode material central part setting prescribed level through hole and shape
At sheath base, it is then inserted into the core base formed by pipe material of main part in the through hole, makes their integrated methods；And with
The form that such sheath base is split into two halves is made, then, configures core base in the vacancy for the sheath base that these are split into two halves, with
Such form, using welding etc. by whole fixation, to make their integrated methods；Etc..
In addition, the case where being directed to the composite billet, being applicable in using with the manufacture of previous extrusion flat perforated pipe is same
, the method that mold (so-called diffluence combination die) with multiple extrusions carries out hot extrusion processing, thus obtain target extrusion
Flat perforated pipe, at this point, configuring the composite billet 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 of pipe is arranged, makes the pipe material of main part for the inside for being configured at composite billet
Defined cross sectional shape in length direction it is consistent with the length direction of the extrusion of the mold.It is opposite by using composite billet
In such extrusion form of diffluence combination die, so as to keep the sacrificial anode material for the outer surface for being configured at composite billet effective
Ground distribution can make sacrificial anode portion exist in the pipe peripheral extent of the peripheral part for the flat pattern for being located at gained flat perforated pipe
The pipe outer peripheral surface of pipe peripheral wall portion advantageously exposes.
In addition, aluminum extruded flat perforated pipe of the invention as described above can suitably serve as the refrigeration in heat exchanger
Agent channel member.Moreover, in the case where aluminum extruded flat perforated pipe of the invention is used as refrigerant path pipe, for example, with
Following structures constitute heat exchanger, and the structure has: a pair of of aluminum catch box (header tank), between they are separated from each other
It is configured every ground；Multiple aluminum extruded flat perforated pipes, they with width direction in parallel the state in 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
These flat perforated pipes are fixed in the outside of flat antipriming pipe, soldering；With aluminum side plate, it is configured at the corrugated fin at both ends
Outside, and be brazed on the fin.Certainly, it goes without saying that other than the heat exchanger of such structure, this also can be used
The aluminum extruded flat perforated pipe of invention is as the refrigerant path pipe in known various heat exchangers.
It should be noted that it is well known that for a pair of of catch box in heat exchanger, refrigerant or coolant liquid are from one
The distribution of a catch box flows into flat perforated pipe, also, the refrigerant or coolant liquid flowed out from flat perforated pipe be integrated into it is another
In a catch box, for example, as it is known that ground can be used: header plate (header plate) and header plate are opposed to made of soldering
Structure；Plate benging is shaped to tubulose, welding or soldering are carried out to the joint portion of the construction for being formed as tubulose and the knot that constitutes
Structure；And it is extruded into the extruding pipe of tubulose；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, be more specifically illustrated by the present invention, but in addition, it is also understood that
It is that the present invention is not by any restriction of the record of such embodiment.
Production as with shown in following table 1 at the pipe material of main part and sacrificial anode material for being grouped as (%: quality criteria)
Expect the composite billet a~h and j formed, is processed using their hot extrusion, respectively obtain flat perforated pipe A~H and J.In addition, system
Make to process by its hot extrusion at the monomer base i being grouped as shown in following table 1, obtain flat perforated pipe I.Then, this is used
A little resulting flat perforated pipe A~J, implement the measurement of the formation range in (1) sacrificial anode portion below, (2) potential measurement and
(3) outside surface anticorrosion corrosion is evaluated.
[table 1]
Specifically, firstly, using the pipe material of main part ingredient in composite billet a~h and j shown in the table 1, using normal
Rule method, is cast by DC, is made respectivelyVarious pipe main body bases.On the other hand, it will use shown in above-mentioned table 1
Composite billet a~h and j in the sacrificial anode base that is similarly fabricated to ingredient of sacrificial anode material it is circular having a size of
Various combinations are carried out in the range of 5mm~85mm, and processing and forming is defined size.Then, it is used in above-mentioned sacrificial anode
The section central portion of base, being formed can be for the through hole of the pipe material of main part base insertion for completing processing, in the through hole
It is embedded in pipe main body base, and then utilizes MIG welding, by these pipe main body bases and sacrificial anode base in their length side
The fixed engagement in both ends of the surface, it is each multiple with the form production of the composite billet 20 of the one with section morphology as shown in Figure 2
Close base a~h and j.In addition, the monomer base i that production pipe material of main part ingredient as shown in above-mentioned table 1 is formed.By the pipe main body
The monomer base i that material uses ingredient to be formed is that the previous material of base is used similarly, in Fig. 3 to show as 30 with unused sacrificial anode
Monomer base.It should be noted that Fig. 2, in 3,22 and 32 be pipe main body base, and 24 be sacrificial anode base.
Then, obtained composite billet 20 or monomer base 30 are heated to 500 DEG C with blanket heating, then using having use
In the rectangular opening (8 flow paths) for forming 8 holes extrusion, diffluence combination die same, processed using hot extrusion, point
Do not manufacture 8 hole flat perforated pipe A~H and I~J as shown in Figure 1 (integral thickness: 2.0mm, the width in flat direction: 16mm,
The wall thickness in pipe peripheral wall portion and inner partition portion: 0.25mm).
(1) measurement of the formation range in sacrificial anode portion
For the various flat perforated pipes (10) in thus obtained 8 hole, punished squeezing out 1/2 position on length direction
They are not cut off, observes its section.Photo obtained from the microscopic structure in the section is shot with 25 times of multiplying power that is, using,
The region in the sacrificial anode portion (18) is measured with ruler, thus measures the formation range of sacrificial anode portion (18).In addition, in this way
Sacrificial anode portion (18) formation range measurement in, by the thickness (maximum gauge) of sacrificial anode portion (18) be pipe peripheral wall portion
(14) the case where 90% or less situation of thickness is evaluated as (〇), will be more than 90% is evaluated as (×).In addition, sun will be sacrificed
Ratio (flat perforated pipe of the length of the exposure portion in pole portion (18) for the pipe outer perimeter (L) of pipe peripheral wall portion (14)
Outer peripheral surface in be formed with sacrificial anode material portion (18) range combined length) be 50% or more situation be evaluated as
(〇), will for pipe outer perimeter (L) for 0% more than and less than 50% the case where be evaluated as (×).In following tables 2,
With ratio of the thickness at the position as maximum gauge of sacrificial anode portion (18) for the thickness of pipe peripheral wall portion (14),
And ratio of the combined length of sacrificial anode portion (18) relative to pipe outer perimeter (L), show for flat perforated pipe A~H and
Flat perforated pipe I and J measure result obtained from the formation range in above-mentioned sacrificial anode portion (18).
[table 2]
It confirmed by the result of above-mentioned cross-section observation, just flat perforated pipe A~H as obtained from above-mentioned extrusion processing
For, the thickness in the sacrificial anode portion (18) formed in pipe peripheral wall portion (14) is pipe peripheral wall portion (14) at most thick position
Thickness 80% hereinafter, in addition, sacrificial anode portion (18) with the pipe outer perimeter (L) relative to such flat perforated pipe (10) and
Speech is more than 50% length range exposure.
In addition, being further acknowledged for carrying out flat perforated pipe (10) obtained from hot extrusion in the above described manner: crowded at it
Out on length direction, the sacrificial anode portion (18) that is formed by sacrificial anode base pipe peripheral wall portion (14) pipe peripheral part steadily
Exposure.
On the other hand, just using by base form the monomer base 30 that i (Al-0.4%Cu) formed, implementation diffluence combination die into
For flat perforated pipe I obtained from capable hot extrusion processing, since sacrificial anode base is not used, in pipe outer peripheral surface
There is no the exposure portion in any sacrificial anode portion 18.In addition, in the square shape for being processed into 60mm × 60mm by using
In the flat perforated pipe J that the composite billet j that base makes as pipe main body base is obtained, the sacrifice formed in pipe peripheral wall portion (14) is positive
The thickness in pole portion (18) becomes the 93% of the thickness of pipe peripheral wall portion (14) at most thick position.In addition, sacrificial anode portion (18)
Ratio of the combined length for pipe outer perimeter (L) be 90%.
(2) potential measurement
Using obtained in above-mentioned, flat perforated pipe A~H and flat perforated pipe I and J, measure respectively pipe material of main part and
The current potential of sacrificial anode material.It should be noted that flat perforated pipe I is made by single base (it is only made of pipe material of main part)
It makes, sacrificial anode portion (18) is not formed.
Specifically, being directed to flat perforated pipe A~H and flat perforated pipe I and J, it is contemplated that they are as in heat exchanger
Heat treatment when heat-transfer pipe use, heating and respectively implement 600 DEG C × 3 minutes for the soldering of fin engagement, then will
Each is cut off along extrusion length direction with the length of 40mm.Then, the material to be tested of the current potential of pipe material of main part is just measured
For, it is cut in section what the length direction (the rectangular direction with pipe axis) along its flat pattern extended, the position of Yu Houdu 1/2
Place's cutting is set, retains the sacrificial anode portion (18) of 10mm × 10mm in the width direction central portion of the inner surface side of a half part
Exposed surface, cutting end face side, with organic siliconresin by except connection potential measurement lead position in addition to whole
Position covers, and thus makes its electrical isolation.In addition, just measurement sacrificial anode portion (18) (sacrificial anode material) current potential for test material
For material, the width direction central portion in the outer surface of the side of its peripheral wall portion retains the sacrificial anode material of 10mm × 10mm
Exposed surface, cutting end face side, with organic siliconresin by except connection potential measurement lead position in addition to whole portions
Position covers, and thus makes its electrical isolation.
In addition, the measuring method as current potential, using following methods: use saturation KCl calomel electrode (SCE:
Saturated Calomel Electrode) it is used as reference electrode, on the other hand, as testing liquid, use is adjusted with acetic acid
For the 5%NaCl aqueous solution of pH3, it is stirred at room temperature, while impregnating material to be tested for 24 hours in the solution, then,
Measure respective current potential.
In addition, the result of the potential difference of pipe material of main part and sacrificial anode material obtained in said determination is shown in following
Table 3.It should be noted that being 5mV or more and 300mV feelings below by the potential difference of the pipe material of main part and sacrificial anode material
The case where condition is evaluated as (◎), is more than 0mV and is less than 5mV by the potential difference and more than the case where 300mV it is evaluated as (〇), will be
The case where 0mV, is evaluated as (×).
[table 3]
The potential measurement result as shown in the table 3 is it is found that flat perforated pipe A~H, the imagination sacrifice being brazed after heating
Anode portion (18) (sacrificial anode material) and the potential difference of pipe material of main part are 3~350mV, and all showing has effective sacrifice
The result of anode effect.
In contrast, using flat perforated pipe I as in the case where material to be tested, sacrifice is not used in flat perforated pipe I
Anode material is the flat perforated pipe similarly, being only made of pipe material of main part with previous material, therefore its potential difference is 0mV.
In addition, carrying out potential measurement similar to the above for flat perforated pipe J as material to be tested, as a result, this is flat more
Sacrificial anode portion (18) (sacrificial anode material) and the potential difference of pipe material of main part after hole pipe J, the soldering heating imagined are
150mV has sacrificial anode effect.
(3) outside surface anticorrosion corrosion is evaluated
Obtained in will be above-mentioned, flat perforated pipe A~H and flat perforated pipe I and J as material to be tested, respectively implement
The effect of respective outside surface anticorrosion erosion is verified in the test of SWAAT specified in ASTM-G85-Annex A3.The SWAAT
Test is repeated spray artificial seawater and setting moist environment under the conditions of steady temperature (49 DEG C), carries out exposing load, thus
Evaluate outside surface anticorrosion corrosion.In addition, the corrosion test time is set as 10 days, 20 days and 30 days this 3 horizontal times, will not have
The case where perforation, is evaluated as (zero), and the case where perforation is evaluated as (×).
Specifically, being directed to flat perforated pipe A~H and flat perforated pipe I~J, it is contemplated that they are as in heat exchanger
Heat treatment when heat-transfer pipe uses, heating and implement 600 DEG C × 3 minutes for the soldering of fin engagement, then by them
It is cut off along length direction is squeezed out with the length of 100mm, is covered the both ends for the cutting end face for exposing flow path with organic siliconresin.Separately
Outside, used in the SWAAT test for experimental liquid, the artificial seawater based on ASTM D1141 is made, and to the artificial seawater
Middle addition acetic acid and be adjusted to pH3.In addition, wetting in spraying -1.5 hours in 0.5 hour is followed as 1 for experimental condition
Ring repeats the circulation, implements the evaluation test of outside surface anticorrosion corrosion with 10 days, 20 days and 30 days this 3 horizontal times.
Then, for the material to be tested for the evaluation test for finishing the outside surface anticorrosion corrosion, by the organosilicon at both ends
Sealing resin removing, then puts into the phosphoric acid chromic acid liquor to have been heated up with heater, and the corrosion on material to be tested surface is generated
Object removes, and whether there is or not through holes on investigation material to be tested surface.Specifically, utilizing following methods investigation the presence or absence of through hole: to flat
The high colored defect detecting liquid of permeability is added dropwise in each flow path of flat antipriming pipe, seeps to the defect detecting liquid from the inner surface of flat perforated pipe
Confirmed out.In turn, the material to be tested for having investigated the through hole is embedded with embedment resin, then, using wet-strong paper to most
Big corrosion portion implements section exposing processing, and then carries out mirror finishing using polishing grinding, thus to the pipe of each material to be tested
The corrosion condition of outer peripheral surface is observed.It should be noted that in the SWAAT test of material to be tested used in above-mentioned test,
By after 20 days not there is a situation where observing perforation behind perforation but 30 days or the case where being not penetrated is evaluated as (◎), after 10 days
Not there is a situation where observing that perforation is evaluated as (zero) behind perforation but 20 days, will be evaluated as the case where observing perforation after 10 days
(×)。
In table 4 below, it is shown respectively and implements 10,20 and 30 for flat perforated pipe A~H and flat perforated pipe I~J
Its above-mentioned SWAAT test is come result obtained from being evaluated.
[table 4]
It can be confirmed by the result of the table 4, for flat perforated pipe A~H, in the evaluation behind 10 days of SWAAT test,
The through hole for penetrating through pipe peripheral wall portion is not generated.In addition, in evaluation after 20 days, about flat perforated pipe B, C, F, H, confirmation
To the through hole for penetrating through pipe peripheral wall portion.In addition, in evaluation after 30 days, any flat perforated pipe other than B, C, F, H
In do not observe through hole.It is thus identified that: for flat perforated pipe A~H, by by sacrificial anode portion (18)
Effective outside surface anticorrosion erosion has been bestowed there are bring sacrificial anode effect.
In contrast, for flat perforated pipe I, due to be not used sacrificial anode material but it is same with previous material
The flat perforated pipe using only pipe material of main part of sample, it is thus identified that: after implementing SWAAT test in 10,20 and 30 days,
In evaluation after all tests, the etch pit for penetrating through pipe peripheral wall portion is generated.It thereby confirms that: due to not as the present invention relates to
And flat perforated pipe in pipe peripheral part, there are sacrificial anode portion (18) like that, can not therefore, it is impossible to obtain sacrificial anode effect
Outside surface anticorrosion erosion effect is played, is thus producing perforation in early days.
In addition, for flat perforated pipe J, it is thus identified that: implementing SWAAT test similar to the above in 10,20 and 30 days
Afterwards, in the evaluation after all tests, the etch pit for penetrating through pipe peripheral wall portion is generated.Confirmed: the through portion be with
Amount more than 90% forms the position of sacrificial anode portion (18), the Zn contained in the sacrificial anode portion (18) be equivalent to soldering plus
It being diffused in pipe peripheral wall portion (14) entirety when the heat treatment of heat, as a result, sacrificial anode portion (18) are consumed in early days, therefore
Early stage produces perforation.
Description of symbols
10 flat perforated pipe, 12 flow path (hole)
14 pipe peripheral wall portion, 16 inner partition portion
18 sacrificial anode portion, 20 composite billet
22 pipe main body base, 24 sacrificial anode base
30 monomer base, 32 pipe main body base
Claims (10)
1. the excellent aluminum extruded flat perforated pipe of outside surface anticorrosion corrosion, which is characterized in that it is added by the extrusion of aluminum material
Obtained from work, the whole extruding pipe that flat cross-sectional shape is presented, the aluminum extruded flat perforated pipe has independent of one another
Multiple flow paths that ground and tube axial direction extend parallel to, and these flow paths are across the inner partition portion extended on tube axial direction
And arranged in the length direction of flat pattern,
The aluminum extruded flat perforated pipe is lower than the aluminum pipe material of main part by using aluminum pipe material of main part and electrochemistry
Aluminium sacrificial anode material as the aluminum material extrusion processing and formed, also, the aluminium sacrificial anode material is in pipe
The whole region of outer peripheral surface or at least flat part of pipe outer peripheral surface a part exposure, to form sacrificial anode portion.
2. the excellent aluminum extruded flat perforated pipe of outside surface anticorrosion corrosion as described in claim 1, wherein in pipe cross section
The pipe peripheral wall portion in addition to the inner partition portion, the sacrificial anode portion is with the 90% or less of the thickness of the pipe peripheral wall portion
Ratio exist.
3. the excellent aluminum extruded flat perforated pipe of outside surface anticorrosion corrosion as claimed in claim 1 or 2, wherein the sacrifice
Anode portion exists in pipe cross section with 50% or more and the 100% of the perimeter of pipe outer peripheral surface ratio below.
4. the excellent aluminum extruded flat perforated pipe of outside surface anticorrosion corrosion as claimed any one in claims 1 to 3, feature
It is, the potential difference of the aluminium sacrificial anode material and the aluminum pipe material of main part is 5mV or more and 300mV or less.
5. the excellent aluminum extruded flat perforated pipe of outside surface anticorrosion corrosion according to any one of claims 1 to 4, wherein
The aluminum material for squeezing out processing is the composite billet being made of the aluminum pipe material of main part and the aluminium sacrificial anode material.
6. the excellent aluminum extruded flat perforated pipe of outside surface anticorrosion corrosion as claimed in claim 5, wherein the composite billet tool
There is an integrated core sheath structure, the core sheath structure includes the core base formed by the aluminum pipe material of main part and positioned at the core base
Around the sheath base formed by the aluminium sacrificial anode material.
7. such as the excellent aluminum extruded flat perforated pipe of outside surface anticorrosion corrosion described in any one of claims 1 to 6, wherein
The extruding pipe is to be processed and formed by using the extrusion of the aluminum material of diffluence combination die.
8. the excellent aluminum extruded flat perforated pipe of outside surface anticorrosion corrosion as described in any one of claims 1 to 7, wherein
The aluminum pipe material of main part is the so-called A1000 system pure aluminum material of JIS or A3000 line aluminium alloy material.
9. such as the excellent aluminum extruded flat perforated pipe of outside surface anticorrosion corrosion described in any item of the claim 1 to 8, wherein
The aluminium sacrificial anode material is the aluminum alloy materials containing Zn.
10. aluminum-made heat exchanger, which is characterized in that consist of comprising aluminum extruded flat described in any one of claims 1 to 9
The aluminum outside fin of flat 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 |
|---|---|---|---|
| JP2017-023867 | 2017-02-13 | ||
| JP2017023867 | 2017-02-13 | ||
| PCT/JP2018/004301 WO2018147348A1 (en) | 2017-02-13 | 2018-02-08 | Aluminum extruded flat perforated pipe exhibiting excellent outer surface corrosion resistance, and aluminum heat exchanger obtained using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110290884A true CN110290884A (en) | 2019-09-27 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880011537.4A Pending CN110290884A (en) | 2017-02-13 | 2018-02-08 | The excellent aluminum extruded flat perforated pipe of outside surface anticorrosion corrosion and use aluminum-made heat exchanger made of it |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPWO2018147348A1 (en) |
| CN (1) | CN110290884A (en) |
| DE (1) | DE112018000792T5 (en) |
| WO (1) | WO2018147348A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05164496A (en) * | 1991-12-17 | 1993-06-29 | Tokyo Gas Co Ltd | Fin tube for open rack type carburetor |
| WO2009020171A1 (en) * | 2007-08-07 | 2009-02-12 | Showa Denko K.K. | Process for producing member for heat exchanger and member for heat exchanger |
| CN102906529A (en) * | 2010-05-24 | 2013-01-30 | 株式会社神户制钢所 | Multi-layered heat transfer tube, process for production of multi-layered heat transfer tube, and molding jig for use in the process |
| CN103658216A (en) * | 2013-11-29 | 2014-03-26 | 中国船舶重工集团公司第七二五研究所 | Extrusion mold for aluminum alloy finned tube of open rack vaporizer |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3113100B2 (en) * | 1992-11-05 | 2000-11-27 | 株式会社デンソー | Multi-hole tube extrusion die and multi-hole tube |
| US7732059B2 (en) * | 2004-12-03 | 2010-06-08 | Alcoa Inc. | Heat exchanger tubing by continuous extrusion |
| 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 DE DE112018000792.8T patent/DE112018000792T5/en active Pending
- 2018-02-08 JP JP2018567476A patent/JPWO2018147348A1/en active Pending
- 2018-02-08 CN CN201880011537.4A patent/CN110290884A/en active Pending
- 2018-02-08 WO PCT/JP2018/004301 patent/WO2018147348A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05164496A (en) * | 1991-12-17 | 1993-06-29 | Tokyo Gas Co Ltd | Fin tube for open rack type carburetor |
| WO2009020171A1 (en) * | 2007-08-07 | 2009-02-12 | Showa Denko K.K. | Process for producing member for heat exchanger and member for heat exchanger |
| CN102906529A (en) * | 2010-05-24 | 2013-01-30 | 株式会社神户制钢所 | Multi-layered heat transfer tube, process for production of multi-layered heat transfer tube, and molding jig for use in the process |
| CN103658216A (en) * | 2013-11-29 | 2014-03-26 | 中国船舶重工集团公司第七二五研究所 | Extrusion mold for aluminum alloy finned tube of open rack vaporizer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2018147348A1 (en) | 2019-11-21 |
| WO2018147348A1 (en) | 2018-08-16 |
| DE112018000792T5 (en) | 2019-10-31 |
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