US4105443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal-forming dies
Assignee: United Kingdom Atomic Energy Authority
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Filing: 1977-01-25
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Granted: 1978-08-08
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Expires: 1997-01-25
Abstract
Abstract A method is provided for treating a metal working tool element made of cemented carbide materials, as hereinafter described, comprising the operation of implanting into a working surface of the tool element ions of a material such as to modify the implanted region of the working surface of the tool element in such a way as to prevent adhesion between the matrix metal of the cemented carbide tool element and a metal being worked by the tool element. Metal working tool elements so treated are also disclosed.
Inventors
- 👤 Geoffrey Dearnaley
- 👤 Nicholas E. W. Hartley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:36
CPC Classifications
B; B21; B21D; B21D37/00; B21D37/01; B23; B23P; B23P15/00; B23P15/24; C; C23; C23C; C23C14/00; C23C14/22; C23C14/48; C23C22/00; C23C22/05; C23C22/06; C23C22/24; C23C22/60; C23C22/62; C23C30/00; C23C30/005; F; F24; F24S; F24S70/00; F24S70/20; F24S70/25; Y; Y02; Y02E; Y02E10/00; Y02E10/40; Y10; Y10S; Y10S148/00; Y10S148/90
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
74 words
A method of treating a metal working tool element made of cemented carbide materials, as hereinbefore described, comprising the operation of implanting into a working surface of the tool element ions of a material such as to interact with the matrix metal of the tool element in such a way as substantially to prevent adhesion between the matrix metal of the cemented carbide tool element and a metal being worked by the tool element.
Claim 2
Independent Claim
74 words
A method of treating a metal working tool element made of cemented carbide materials, as hereinbefore described, comprising the operation of implanting into a working surface of the tool element ions of a material such as to interact with the matrix metal of the tool element in such a way as substantially to prevent adhesion between the matrix metal of the cemented carbide tool element and a metal being worked by the tool element.
Claim 3
Independent Claim
64 words
A method of treating metal working dies made of cemented tungsten carbide comprising the operation of implanting into a working surface of the dies ions of a material such as to interact with the matrix metal of the dies in such a way as substantially to prevent adhesion between the matrix metal of the cemented tungsten carbide and metal being formed by the die.
Claim 4
Independent Claim
64 words
A method of treating metal working dies made of cemented tungsten carbide comprising the operation of implanting into a working surface of the dies ions of a material such as to interact with the matrix metal of the dies in such a way as substantially to prevent adhesion between the matrix metal of the cemented tungsten carbide and metal being formed by the die.
Claim 5
Dependent Claim
42 words
A method according to claim 2 wherein the implanted ions are selected from the group comprising B + , CO + , O + , Cl + , Br + , Be + , A + N + and He + ions.
Claim 6
Dependent Claim
43 words
A method according to claim 2 wherein the implanted ions are selected from the group comprising Fe + , Cu + , Zn + , Mo + , Ag + , Cd + , In + , Su + and Pb + .
Claim 7
Dependent Claim
45 words
A method according to claim 2 wherein the ions are selected from the group comprising Li + , Na + , Mg + , K + , Ca + , Ti + , V + , Mo + , W + and Bi + .
Claim 8
Dependent Claim
33 words
A method according to claim 2 wherein the ions are implanted to a concentration of at least 1 × 10 17 ions/cm 2 in those regions of the tool element which are treated.
Claim 9
Dependent Claim
22 words
A method according to claim 5 wherein the ions are implanted to a concentration of 5 × 10 17 ions/cm 2 .
Claim 10
Dependent Claim
64 words
A cemented carbide, as hereinbefore described, metal-working tool element having a working surface into which has been implanted ions of a material such as to interact with the matrix metal of the cemented carbide tool element in such a way as substantially to prevent adhesion between the matrix metal of the cemented carbide tool element and a metal being worked by the tool element.
Claim 11
Dependent Claim
64 words
A cemented carbide, as hereinbefore described, metal-working tool element having a working surface into which has been implanted ions of a material such as to interact with the matrix metal of the cemented carbide tool element in such a way as substantially to prevent adhesion between the matrix metal of the cemented carbide tool element and a metal being worked by the tool element.
Claim 12
Dependent Claim
16 words
A tool element according to claim 8 wherein the cemented carbide material is cemented tungsten carbide.
Claim 13
Dependent Claim
24 words
A tool element according to claim 8 wherein the cemented carbide material comprises tungsten and chromium carbides in a matrix of cobalt and chromium.
Claim 14
Dependent Claim
12 words
A tool element according to claim 8 comprising a metal working die.
Claim 15
Dependent Claim
22 words
A tool element according to claim 9 comprising a die for use in the drawing and wall ironing of metal can bodies.
Claim 16
Dependent Claim
33 words
A tool element according to claim 8 comprising a seaming roll for use in conjunction with a seaming chuck to form a double seam securing a metal can end to a can body.
Claim 17
Dependent Claim
28 words
A tool element according to claim 8 comprising a punch for use in conjunction with another tool element comprising a die to form end caps for metal cans.
Claim 18
Dependent Claim
47 words
A tool element according to claim 8 wherein the working surface is implanted with ions selected from the group comprising B + , N + , O + , Cl + , He + , CO + , Br + , A + and Be + ions.
Claim 19
Dependent Claim
47 words
A tool element according to claim 8 wherein the working surface is implanted with ions selected from the group comprising Fe + , Cu + , Zn + , Mo + , Ag + , Cd + , In + , Sn + and Pb + ions.
Claim 20
Dependent Claim
50 words
A tool element according to claim 8 wherein the working surface is implanted with ions selected from the group comprising Li + , Na + , Mg + , K + , Ca + , Ti + , V + , Mo + , W + and Bi + ions.
Claim 21
Dependent Claim
39 words
A tool element according to claim 8 wherein the working surface of the tool element is implanted with ions to a concentration of at least 1 × 10 17 ions/cm 2 in the treated regions of the tool element.
Claim 22
Dependent Claim
20 words
A tool element according to claim 16 wherein the concentration of ions is 5 × 10 17 ion/cm 2 .
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-08-07 | 1982-02-06 | 1982-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-08-07 | 1986-02-06 | 1986-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-08-07 | 1990-02-06 | 1990-08-08 | $7700.00 | Window Closed / Lapsed |