SE0004915D0 - Heat sink unit - Google Patents

Heat sink unit

Info

Publication number
SE0004915D0
SE0004915D0 SE0004915A SE0004915A SE0004915D0 SE 0004915 D0 SE0004915 D0 SE 0004915D0 SE 0004915 A SE0004915 A SE 0004915A SE 0004915 A SE0004915 A SE 0004915A SE 0004915 D0 SE0004915 D0 SE 0004915D0
Authority
SE
Sweden
Prior art keywords
aperture
heat sink
extrusion
produced
extrusion tool
Prior art date
Application number
SE0004915A
Other languages
Swedish (sv)
Inventor
Stellan Ekstrand
Original Assignee
Sapa Profiler Ab
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sapa Profiler Ab filed Critical Sapa Profiler Ab
Priority to SE0004915A priority Critical patent/SE0004915D0/en
Publication of SE0004915D0 publication Critical patent/SE0004915D0/en
Priority to PCT/SE2001/002872 priority patent/WO2002053304A1/en

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
  • Extrusion Of Metal (AREA)

Abstract

When extruding profiles having fins with thin cross-section or narrow spacing, e g heat sinks, it has not been possible, without using special tool supports, to achieve a ratio between the fin height and the spacing between two adjacent fins of more than 5:1 due to loss of strength of the extrusion tool. The disclosed invention solves this problem by the use of an extrusion die comprising an aperture having a bearing portion (10) and a tapered portion (14) and where the bearing portion of the aperture is directly transferred into the tapered portion by a change of the taper angle of the aperture walls from alpha to beta . The extreme pressures on the thin sections and sharp corners of the extrusion tool is thereby avoided and no breakdown of the extrusion tool occurs. A heat sink profile with portions of thin cross-section or narrow spacing that is produced to its final shape may thereby be produced.
SE0004915A 2000-12-29 2000-12-29 Heat sink unit SE0004915D0 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE0004915A SE0004915D0 (en) 2000-12-29 2000-12-29 Heat sink unit
PCT/SE2001/002872 WO2002053304A1 (en) 2000-12-29 2001-12-21 Method for producing a heat sink unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0004915A SE0004915D0 (en) 2000-12-29 2000-12-29 Heat sink unit

Publications (1)

Publication Number Publication Date
SE0004915D0 true SE0004915D0 (en) 2000-12-29

Family

ID=20282490

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0004915A SE0004915D0 (en) 2000-12-29 2000-12-29 Heat sink unit

Country Status (2)

Country Link
SE (1) SE0004915D0 (en)
WO (1) WO2002053304A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102441583A (en) * 2012-01-20 2012-05-09 惠州智科实业有限公司 Aluminum extrusion mould without working zones

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2285941B (en) * 1994-01-27 1997-01-08 Alcan Int Ltd Extrusion method
SE509451C2 (en) * 1997-05-13 1999-01-25 Webra Ind Ab Method for providing a device for heat transfer purposes
TW436341B (en) * 1998-09-07 2001-05-28 Hoi Metal Manufactory Co Ltd Mold for aluminum alloy heat sink with extra high teeth ratio

Also Published As

Publication number Publication date
WO2002053304A1 (en) 2002-07-11

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