EP1840487B1 - Capillaire en alliage d'aluminium et soupape d'étranglement comprenant ce capillaire en alliage d'aluminium - Google Patents
Capillaire en alliage d'aluminium et soupape d'étranglement comprenant ce capillaire en alliage d'aluminium Download PDFInfo
- Publication number
- EP1840487B1 EP1840487B1 EP06112083.8A EP06112083A EP1840487B1 EP 1840487 B1 EP1840487 B1 EP 1840487B1 EP 06112083 A EP06112083 A EP 06112083A EP 1840487 B1 EP1840487 B1 EP 1840487B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- weight max
- capillary tube
- aluminium alloy
- weight
- endless
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Revoked
Links
- 229910000838 Al alloy Inorganic materials 0.000 title claims description 30
- 238000003475 lamination Methods 0.000 title claims description 15
- 238000004519 manufacturing process Methods 0.000 claims description 20
- 239000004411 aluminium Substances 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 10
- 238000003754 machining Methods 0.000 claims description 9
- 239000012535 impurity Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000010622 cold drawing Methods 0.000 claims description 2
- 238000001192 hot extrusion Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 description 22
- 239000000956 alloy Substances 0.000 description 22
- 239000000463 material Substances 0.000 description 18
- 239000010949 copper Substances 0.000 description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 12
- 238000001816 cooling Methods 0.000 description 11
- 229910052802 copper Inorganic materials 0.000 description 11
- 239000012530 fluid Substances 0.000 description 7
- 239000011777 magnesium Substances 0.000 description 6
- 239000011572 manganese Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 229910000881 Cu alloy Inorganic materials 0.000 description 3
- 238000010924 continuous production Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- 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
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
- B21C1/22—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles
-
- 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
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/08—Making wire, bars, tubes
- B21C23/085—Making tubes
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/37—Capillary tubes
Definitions
- the present invention relates to new "endless" capillary tubes, used preferably in the production of lamination valves.
- capillary tubes As lamination valves, adapted to regulate the thermodynamic cycle of the circuit.
- the length and the internal diameter basically determine the pressure drop of the cooling means used in the circuit. Therefore in the aforesaid valves the so-called flow rate of the capillary tubes employed, constitutes, together with the choice of fluid used, the key factor for the dimensioning and project design of the whole cooling system.
- GB-A-2376513 discloses an example of heat transfer element for use within a refrigeration system wherein the heat transfer tubing portion is made of aluminium, in particular Al 3103.
- flow rate refers to the volume of fluid (generally nitrogen or dry air is used as measuring fluid or gas) that passes through the section of the capillary tube during a unit of time at a determined inlet pressure.
- the flow rate is conventionally measured in litres per minute.
- the flow rate of a capillary tube is measured according to UNI EN 12450 standards. In fact, specific instruments are available on the market designed for this purpose.
- the gas is sent into the capillary tube at a pressure between 0.5 and 20 bar, more preferably between 4 and 15 bar. Even more preferably, the measuring gas pressure ranges between 5 and 10 bar.
- the capillary tubes destined for the aims specified herein are produced as "endless" tubes wound in rolls (so-called wound coils) and obtained through continuous machining comprising a succession of cold-drawning operations with a floating chuck on roughly semi-machined blanks obtained through extrusion.
- wound coils wound in rolls
- the internal diameter be constant, and it is thus important that materials in use possess well-defined chemical, physical and mechanical characteristics.
- Other important characteristics that are required and that cannot be modified because these are dictated by the preferred use are the resistance of the employed material to corrosion, as well as its compatibility with the fluids and other materials used in the cooling circuit.
- capillary tubes with a constant flow rate in the form of endless tubes, preferably wound in rolls or coils, preferably to be used to obtain lamination valves for household appliance cooling circuits from an alternative material, also less costly and less valuable than copper. Therefore there is a definite need for the provision of new lamination valves available for household appliance cooling circuits, in which the capillary tube, while providing the same performance level, is composed of a more economical alternative material. Moreover, it would be particularly advantageous if the said new lamination valves comprise a capillary tube composed of a material that is more resistant to corrosion and particularly suitable for use in the context of cooling circuits.
- the present invention also provides a method for the production of endless capillary tubes according to claim 4 in an aluminium alloy, particularly suitable for the aforesaid aims, since it is able to be used on existing machines without the need for any modifications.
- the term "capillary tube” refers to a tube whose internal diameter is very small, in particular, 4.5mm or less.
- the internal diameter is such that the behaviour of a fluid in the tube interior, in particular a fluid commonly used in household appliance cooling circuits, is controlled by the so-called physical principle of capillarity. Therefore, more preferably, the capillary tubes of the present invention are characterised by an internal diameter less than 3mm, even more preferably less than 1.0mm. More preferred capillary tubes have an internal diameter less than 0.7mm.
- the minimum diameter of the capillary tubes according to the present invention is 0.2mm, preferably 0.3mm, more preferably 0.4mm, and most preferably 0.5mm.
- the capillary tubes of the present invention have an internal diameter 4,5mm or less, preferably less than 3mm, more preferably less than 1 mm, even more preferably less than 0.7 mm.
- the capillary tubes of the present invention have an internal diameter that ranges between 4,5mm and 0.2 mm, preferably between less than 3mm and 0.2mm, more preferably between less than 1 mm and 0.2mm, even more preferably between less than 0.7 mm and 0.2mm.
- the capillary tubes of the present invention have an internal diameter between 4.5mm and 0.3 mm, preferably between less than 3mm and 0.3mm, more preferably between less than 1 mm and 0.3mm, even more preferably between less than 0.7 mm and 0.3mm.
- the capillary tubes of the present invention have an internal diameter that ranges between 4.5mm and 0.4 mm, preferably between less than 3mm and 0.4mm, more preferably between less than 1 mm and 0.4mm, even more preferably between less than 0.7 mm and 0.4mm.
- capillary tubes of the present invention have an internal diameter ranging between 4.5mm and 0.5 mm, preferably between less than 3mm and 0.5mm, more preferably between less than 1 mm and 0.5mm, even more preferably between less than 0.7 mm and 0.5mm.
- endless capillary tube refers to a seamless capillary tube obtained by means of continuous production.
- Said "endless" capillary tube is at least 100 metres long, preferably at least 500 metres long, even preferably at least 1000 metres long.
- the endless capillary tube is wound to form rolls or wound coils.
- the endless capillary tubes in aluminium alloy of the present invention are characterised by a very strict proportionality between flow rate and length.
- the flow rates of two segments of capillary tube having a length of 2500mm cut from two positions taken at random from the endless tube do not vary by more than ⁇ 6%, preferably ⁇ 3%, even more preferably ⁇ 2% and most preferably ⁇ 1%.
- the aluminium tube is able to guarantee:
- a preferred aluminium alloy consists of: Si: 0.10% in weight max.; Fe: 0.20% in weight max.; Cu: 0.10% in weight max.; Mn: 0.90 -1,10% in weight; Mg: 0.03% in weight max.; Cr: 0.03% in weight max.; Zn: 0.07% in weight max.; Ti: 0.03% in weight max.; the remainder being aluminium and inevitable impurities.
- an aluminium alloy consisting of: Si: 0.10% in weight max.; Fe: 0.15% in weight max.; Cu: 0.10% in weight max.; Mn: 1.00 - 1.10% in weight; Mg: 0.03% in weight max.; Cr: 0.03% in weight max.; Zn: 0.07% in weight max.; Ti: 0.03% in weight max.; the remainder being aluminium and inevitable impurities.
- the aluminium alloy identified above permit the production of endless capillary tubes of the present invention, using the same processes used to produce endless capillary tubes in copper, without the need for any modifications.
- the aluminium alloy according to claim 1 permits continuous production without the forming of faults or rupture during the working.
- the machine tools traditionally optimised for the production of copper capillary tubes can be used to total benefit without the need for modification.
- an aluminium alloy that belongs to the general class 3103 (in other words aluminium alloy composed of Si: 0.50% in weight max.; Fe: 0.70% in weight max.; Cu: 0.05% - 0.10% in weight; Mn: 0.90 - 1.50% in weight; Mg: 0.30% in weight max.; Cr: 0.10% in weight max.; Zn: 0.20% in weight max.; Ti: absent, the remainder being aluminium and inevitable impurities), as defined by UNI EN 9003/3 standards, is not sufficient to guarantee material workability of a level that permits continuous production of capillary tubes with homogeneous quality with the current technology available.
- this class alloys exist with similar compositions, but with different performance levels in terms of mechanical characteristics, even up to a level of 25 %: this fact makes it impossible to obtain constant production (continuous and with homogeneous quality) using machinery currently available.
- the reduction of the maximum Fe content from 0.70 % (alloy 3103) to 0.25 % provides an improvement in productivity and the surface quality of the product because of a lesser quantity of precipitates with abrasive action.
- an alloy with the identified composition but with an Fe content equal to 0.40 % (outside the specific object of the present invention but within class 3103) produces roughness on the extruded tube equal to 2,5 ⁇ m (Ra) compared to 1 ⁇ m (Ra) of the alloy object of the invention.
- the alloy within the scope of the present invention permits better use of the machining tools because of reduced wear, and also makes the formation of material agglomerates on the tools less probable, a problem that can cause productive line arrest in order to replace the deteriorated tools.
- the alloy within the scope of the present invention can be considered as an evolution of the alloy class 3103 according to UNI 9003/3 standards, which, in itself is not suited to the production of "endless" capillary tube.
- this material generally offers excellent plastic cold workability levels, but combined with a very low mechanical resistance which creates a decided drop in tool performance caused by accumulated material residue on the tools during machining.
- the interiors of the capillary tubes realised in this manner also show a high level of machining residue.
- alloy 3103 according to UNI 9003/3 has manganese as the main alligation element and is currently widely used in particularly strict applications such as the automotive industry.
- Alloy 3103 has a mechanical resistance, in the same physical state, of approximately 50 % more than alloy 1070 and maintains good plastic cold workability characteristics.
- the problems described for alloy 1070 were also encountered by the inventors of the present Application with the alloy 3103 although at a slightly lesser level. In any case, as demonstrated above, it is important to emphasise the fact that alloy 3103 was not generally suitable for the production of "endless" capillary tubes according to the present invention since the composition interval defined by the standards in question, identifies an alloy family with properties that are too different from one another.
- the corresponding mechanical characteristics can vary by more than 25 % in terms of mechanical resistance (from 95 to over 120 N/mm2 for an extruded tube, and from approximately 145 to over 185 N/mm2 for a capillary tube not subjected to heat treatment), and since this is only the first step in a succession of further mechanical operations, it would seem that this variability is excessive because it does not permit a production process able to provide constant and repeatable performance with the variations in the composition of the material within acceptable limits.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Claims (10)
- Tube capillaire sans fin en alliage d'aluminium du type ayant un diamètre interne compris dans la plage de 0,2 à 4,5 mm et une longueur dans la plage de 100 à 10 000 mm, caractérisé en ce que le débit de deux segments du tube capillaire ayant une longueur de 2 500 mm découpée à partir de deux positions prises au hasard du tube capillaire sans fin ne varie pas de plus de ± 6%, dans lequel l'alliage d'aluminium consiste en : 0,15% en poids max. de Si, 0,25 % en poids max. de Fe, 0,1.0 % en poids max. de Cu, 0,90 à 1,10% en poids max. de Mn, 0,06 % en poids max. de Mg, 0,06% en poids max. de Cr, 0,10 % en poids max. de Zn, 0,06 % en poids max. de Ti, le reste étant constitué d'aluminium et d'impuretés inévitables.
- Tube capillaire sans fin en alliage d'aluminium selon la première revendication, caractérisé en ce que le débit des deux segments ne varie pas de plus de ± 3 %, de préférence de ± 2 %, de manière davantage préférée de ± 1 %.
- Tube capillaire sans fin en alliage d'aluminium selon la revendication 1 ou 2, caractérisé en ce qu'il est enroulé pour former des rouleaux ou des bobines enroulées.
- Procédé de production de tubes capillaires sans fin en alliage d'aluminium tels que décrits dans les revendications précédentes, comprenant les étapes suivantes :- l'extrusion à chaud d'une ébauche dégrossie ;- des étapes successives d'étirage à froid, le nombre d'étapes dépendant du cycle d'usinage envisagé ; le diamètre externe et l'épaisseur du tube sont réduits avec chaque étape d'extrusion jusqu'à l'obtention de la mesure finale ;- l'enroulement pour former des bobines enroulées ;- le lavage de la surface interne pour éliminer les résidus d'usinage ;- le traitement par la chaleur pour modifier les caractéristiques mécaniques du tube capillaire en augmentant la ductilité.
- Tube capillaire en alliage d'aluminium selon la revendication 1, caractérisé en ce que la division géométrique en deux du tube capillaire produit deux sections égales ayant la même longueur, et dont les débits respectifs ne diffèrent pas l'un de l'autre de plus de ± 6 %.
- Tube capillaire selon la revendication 5,dans lequel le débit des deux moitiés ne varie pas de plus de ± 3 %, de préférence ± 2 %, de manière davantage préférée ± 1 %.
- utilisation du tube capillaire selon la revendication 5 ou 6, pour obtenir une valve de laminage destinée à des appareils électroménagers.
- Tube capillaire sans fin en alliage d'aluminium selon les revendications 1 à 3, 5 et 6, dans lequel l'alliage d'aluminium est composé : de 0,10 % en poids max. de Si ; de 0,20 % en poids max. de Fe ; de 0,10 % en poids max. de Cu, de 0,90 à 1,10% en poids max. de Mn ; de 0,03 % en poids max. de Mg ; de 0,03 % en poids max. de Cr ; de 0,07% en poids max. de Zn ; de 0,03 % en poids max. de Ti, le reste étant constitué d'aluminium et d'impuretés inévitables.
- Tube capillaire sans fin en alliage d'aluminium selon les revendications 1 à 3, 5 et 6, dans lequel l'alliage d'aluminium est composé : de 0,10% en poids max. de Si ; de 0,15% en poids max. de Fe ; de 0,10 % en poids max. de Cu ; de 1,00 à 1,10 % en poids max. de Mn ; de 0,03 % en poids max. de Mg ; de 0,03 % en poids max. de Cr ; de 0,07% en poids max. de Zn ; de 0,03 % en poids max. de Ti, le reste étant constitué d'aluminium et d'impuretés inévitables.
- Valve de laminage destinée à des appareils électroménagers comprenant un tube capillaire selon les revendications 1 à 3, 5, 6, 8 et 9.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SI200631736T SI1840487T1 (sl) | 2006-03-31 | 2006-03-31 | Brezkončne kapilarne cevi v aluminijevi zlitini in laminacijski ventili, obsegajoči kapilarne cevi iz aluminijevih zlitin |
PL06112083T PL1840487T4 (pl) | 2006-03-31 | 2006-03-31 | Bezkońcowe rurki kapilarne ze stopu aluminium i zawory dławiące zawierające rurki kapilarne ze stopu aluminium |
EP06112083.8A EP1840487B1 (fr) | 2006-03-31 | 2006-03-31 | Capillaire en alliage d'aluminium et soupape d'étranglement comprenant ce capillaire en alliage d'aluminium |
BRPI0701245-4A BRPI0701245A2 (pt) | 2006-03-31 | 2007-03-29 | novos tubos capilares sem fim em liga de alumÍnio, novas vÁlvulas de laminaÇço compreendendo tubos capilares em liga de alumÍnio, e nova liga de alumÍnio |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06112083.8A EP1840487B1 (fr) | 2006-03-31 | 2006-03-31 | Capillaire en alliage d'aluminium et soupape d'étranglement comprenant ce capillaire en alliage d'aluminium |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1840487A1 EP1840487A1 (fr) | 2007-10-03 |
EP1840487B1 true EP1840487B1 (fr) | 2013-10-30 |
Family
ID=36910937
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06112083.8A Revoked EP1840487B1 (fr) | 2006-03-31 | 2006-03-31 | Capillaire en alliage d'aluminium et soupape d'étranglement comprenant ce capillaire en alliage d'aluminium |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1840487B1 (fr) |
BR (1) | BRPI0701245A2 (fr) |
PL (1) | PL1840487T4 (fr) |
SI (1) | SI1840487T1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11498104B2 (en) | 2019-08-05 | 2022-11-15 | Samsung Electronics Co., Ltd. | Extrusion apparatus and method for manufacturing aluminum capillary tube using same |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITMI20090878A1 (it) | 2009-05-19 | 2010-11-20 | Aro Tubi Trafilerie S P A | Processo di ottenimento di dispositivi per il trattamento del fluido refrigerante in macchine frigorifere e di dispositivi così ottenuti |
IT201800006938A1 (it) * | 2018-07-05 | 2020-01-05 | Procedimento continuo di produzione di capillari in leghe non-ferrose. | |
CN110038913A (zh) * | 2019-04-26 | 2019-07-23 | 张家港保税区亚鑫精密制管有限公司 | 汽车空心稳定杆用金属管加工工艺 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US174758A (en) | 1876-03-14 | Improvement in draft-equalizers | ||
US2687626A (en) * | 1952-02-16 | 1954-08-31 | Bohn Aluminium & Brass Corp | Heat exchanger having open-sided bore superimposed on closed bore |
DE1807516A1 (de) * | 1968-11-07 | 1970-06-04 | Ver Deutsche Metallwerke Ag | Anschlussstueck fuer Drosseleinrichtungen |
US3923557A (en) * | 1973-11-12 | 1975-12-02 | Alusuisse | Corrosion resistant aluminum alloys |
US4408467A (en) * | 1981-11-23 | 1983-10-11 | Carrier Corporation | Noise suppressing feeder tube for a refrigerant circuit |
GB2272506B (en) * | 1992-11-02 | 1996-07-24 | Nippon Denso Co | Refrigerant condenser |
JPH06278243A (ja) * | 1993-03-26 | 1994-10-04 | Nippon Steel Corp | 成形加工性、耐食性および焼付硬化性に優れたアルミニウム合金合わせ板 |
GB2321869B (en) * | 1997-02-10 | 2001-05-30 | Furukawa Electric Co Ltd | Aluminum alloy brazing sheet |
US6908520B2 (en) * | 1999-05-28 | 2005-06-21 | The Furukawa Electric Co., Ltd. | Aluminum alloy hollow material, aluminum alloy extruded pipe material for air conditioner piping and process for producing the same |
EP1351795B1 (fr) * | 2001-01-16 | 2004-08-25 | Pechiney Rhenalu | Feuille de brasage et procede correspondant |
GB2376513A (en) * | 2001-06-15 | 2002-12-18 | Bundy As | Heat transfer element |
FR2836542B1 (fr) * | 2002-02-26 | 2007-06-29 | Valeo Climatisation | Organe de detente pour boucle de climatisation de vehicule |
FR2840975B1 (fr) * | 2002-06-14 | 2005-01-14 | Valeo Climatisation | Dispositif de vaporisation pour boucle de climatisation |
GB2418478A (en) * | 2004-09-24 | 2006-03-29 | Ti Group Automotive Sys Ltd | A heat exchanger |
-
2006
- 2006-03-31 PL PL06112083T patent/PL1840487T4/pl unknown
- 2006-03-31 SI SI200631736T patent/SI1840487T1/sl unknown
- 2006-03-31 EP EP06112083.8A patent/EP1840487B1/fr not_active Revoked
-
2007
- 2007-03-29 BR BRPI0701245-4A patent/BRPI0701245A2/pt not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11498104B2 (en) | 2019-08-05 | 2022-11-15 | Samsung Electronics Co., Ltd. | Extrusion apparatus and method for manufacturing aluminum capillary tube using same |
Also Published As
Publication number | Publication date |
---|---|
PL1840487T3 (pl) | 2014-06-30 |
EP1840487A1 (fr) | 2007-10-03 |
PL1840487T4 (pl) | 2014-06-30 |
BRPI0701245A2 (pt) | 2008-11-11 |
SI1840487T1 (sl) | 2014-05-30 |
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