DE10324271A1 - Production of a clamping and tensioning element for holding a workpiece comprises pulverizing a niobium-containing nickel-titanium shape memory alloy, mixing with a binder, pouring into a mold, and further processing - Google Patents
Production of a clamping and tensioning element for holding a workpiece comprises pulverizing a niobium-containing nickel-titanium shape memory alloy, mixing with a binder, pouring into a mold, and further processing Download PDFInfo
- Publication number
- DE10324271A1 DE10324271A1 DE10324271A DE10324271A DE10324271A1 DE 10324271 A1 DE10324271 A1 DE 10324271A1 DE 10324271 A DE10324271 A DE 10324271A DE 10324271 A DE10324271 A DE 10324271A DE 10324271 A1 DE10324271 A1 DE 10324271A1
- Authority
- DE
- Germany
- Prior art keywords
- binder
- mold
- memory alloy
- clamping
- shape memory
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
- B22F3/227—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip by organic binder assisted extrusion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/0433—Nickel- or cobalt-based alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
Die
Erfindung betrifft ein Verfahren zur Herstellung eines Klemmelements
aus einer Formgedächnislegierung,
wie es
Aus
der
Aus
der
Die Aufgabe der Erfindung ist es, ein Verfahren zur Herstellung eines Klemmelements anzugeben, bei dem die oben genannten Nachteile des vorbekannten Klemmelement zumindest verringert sind.The The object of the invention is to provide a method for producing a Specify clamping elements in which the above-mentioned disadvantages of previously known clamping element are at least reduced.
Die Aufgabe wird einem Verfahren gemäß dem Anspruch 1 gelöst. Durch die Verwendung eines aus einer Nb-haltigen NiTi-Formgedächnislegierung bestehenden Pulvers kann das spätere Klemm- oder Spannelement in einfacher und preisgünstiger Weise in eine beliebige Form gebracht und anschließen zu dem Klemmelement gesintert werden. Des weiteren weist dieses Klemmelement eine weite Hysterese auf, so dass ein derartiges Klemmelement sogar bei Raumtemperatur und sogar bis ca. 80 °C gelagert werden kann, ohne das ein Rückverformung auftritt.The Task is a method according to the claim 1 solved. By using a Nb-containing NiTi shape memory alloy Powder can be the later Clamping or clamping element in a simple and inexpensive manner in any Bring shape and connect are sintered to the clamping element. Furthermore, this one has Clamping a wide hysteresis, so that such a clamping element even at room temperature and even up to about 80 ° C can be stored without this is a reverse deformation occurs.
Bei der Montage wird das Klemmelement auf ca. 130 °C erhitzt, wodurch eine Rückverformung von einem klemmseitig aufgeweiteten Zustand zu einem klemmenden Zustand erfolgt.at During assembly, the clamping element is heated to approx. 130 ° C, which causes a reverse deformation from a terminally widened state to a clamping Condition occurs.
Die Erschmelzung der Nb-haltigen Formgedächnislegierung erfolgt analog zur Herstellung der binären NiTi-Formgedächnislegierung.The Melting of the Nb-containing shape memory alloy takes place analogously for the production of the binary NiTi Formgedächnislegierung.
Die Pulverisierung Nb-haltigen NiTi-Formgedächnislegierung erfolgt sinnvollerweise aus der Schmelze, insbesondere in einer allenfalls nur geringfügig Sauerstoff aufweisenden Umgebung. Hierbei sind mittlere Korngrößen des Pulvers kleiner 500 μm, bevorzugt kleiner 50 μm und besonders bevorzugt kleiner 20 μm zweckmäßig.The Pulverization Nb-containing NiTi shape memory alloy is useful from the melt, especially in a possibly only slightly oxygen having environment. Here are mean grain sizes of Powder smaller than 500 μm, preferably less than 50 microns and more preferably less than 20 microns appropriate.
Das Pulver wird anschließend mit einem Binder zu einem Gemisch vermengt, aus welchen unter Härtung des Binders ein Formkörper mit den gewünschten Abmessungen hergestellt wird.The Powder will follow mixed with a binder to a mixture, from which, with hardening of the Binders a molding with the desired Dimensions is produced.
In günstiger Weise wird dem Gemisch noch ein Gleitmittel wie Wachs, Stearate und dgl., beigegeben und das fließfähige Gemisch, bspw. mit einem Extruder, in eine Form zu dem Formkörper gepresst. Der Binder kann danach aus dem Formkörper chemisch und/oder thermisch entfernt werden.In better Way, the mixture is still a lubricant such as wax, stearates and the like., And added the flowable mixture, eg. With an extruder, in a mold to the shaped body pressed. The binder can then from the molding chemical and / or thermal be removed.
Der Formkörper wird gesintert, wobei bei diesem Verfahrensschritt in besonderer Weise auch Binder thermisch ausgetrieben werden kann.Of the moldings is sintered, in this process step in particular Way also binders can be thermally expelled.
Die erhaltenen gesinterten Klemmelemente können auch durch ein Drucksintern weiter verdichtet werden. Durch die Kenntnis des Schrupfmaßes ist in besonderer Weise eine weitere spanende Bearbeitung der gesinterten Klemmelemente nicht mehr notwendig.The obtained sintered clamping elements can also by pressure sintering be further compressed. By knowing the Schrupfmaßes is in a special way, a further machining of the sintered Clamping elements no longer necessary.
Insgesamt sind das erfindungsgemäße Verfahren auch komplex geformte Klemmelemente auf eine kostengünstige Weise herstellbar, wobei die Klemmelemente, bedingt durch ihren weite Hysterese, einfach zu handhaben sind.Overall, the inventive Ver drive complex shaped clamping elements in a cost-effective manner to produce, the clamping elements, due to their wide hysteresis, are easy to handle.
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10324271A DE10324271B4 (en) | 2003-05-28 | 2003-05-28 | Method for producing a clamping element |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10324271A DE10324271B4 (en) | 2003-05-28 | 2003-05-28 | Method for producing a clamping element |
Publications (2)
Publication Number | Publication Date |
---|---|
DE10324271A1 true DE10324271A1 (en) | 2005-01-05 |
DE10324271B4 DE10324271B4 (en) | 2006-09-21 |
Family
ID=33494766
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10324271A Expired - Fee Related DE10324271B4 (en) | 2003-05-28 | 2003-05-28 | Method for producing a clamping element |
Country Status (1)
Country | Link |
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DE (1) | DE10324271B4 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100451144C (en) * | 2006-12-25 | 2009-01-14 | 华南理工大学 | Method for preparing shape memory nickel titanium alloy with gradient porosity |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4657822A (en) * | 1986-07-02 | 1987-04-14 | The United States Of America As Represented By The Secretary Of The Navy | Fabrication of hollow, cored, and composite shaped parts from selected alloy powders |
DE3909630A1 (en) * | 1989-03-23 | 1990-09-27 | Daimler Benz Ag | Clamping tool for frictional and highly precise clamping of workpieces |
-
2003
- 2003-05-28 DE DE10324271A patent/DE10324271B4/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100451144C (en) * | 2006-12-25 | 2009-01-14 | 华南理工大学 | Method for preparing shape memory nickel titanium alloy with gradient porosity |
Also Published As
Publication number | Publication date |
---|---|
DE10324271B4 (en) | 2006-09-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: DAIMLERCHRYSLER AG, 70327 STUTTGART, DE |
|
8327 | Change in the person/name/address of the patent owner |
Owner name: DAIMLER AG, 70327 STUTTGART, DE |
|
8339 | Ceased/non-payment of the annual fee |