WO1998027243A1 - Verfahren zum kleberfreien glühen von buntmetallteilen - Google Patents
Verfahren zum kleberfreien glühen von buntmetallteilen Download PDFInfo
- Publication number
- WO1998027243A1 WO1998027243A1 PCT/EP1997/006394 EP9706394W WO9827243A1 WO 1998027243 A1 WO1998027243 A1 WO 1998027243A1 EP 9706394 W EP9706394 W EP 9706394W WO 9827243 A1 WO9827243 A1 WO 9827243A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- annealing
- protective gas
- gas atmosphere
- oxide layer
- inert
- Prior art date
Links
Classifications
-
- 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
- C22F1/02—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
-
- 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
- C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
Definitions
- the invention relates to a method for glue-free annealing of non-ferrous metal parts, i.e. to avoid so-called glue during the annealing process, especially in a hood furnace.
- Non-ferrous metal parts such as bronze wire or ribbon
- a homogenizing annealing after casting and a forming process. Thereafter, further forming, such as rolling or drawing, and recrystallization annealing are carried out alternately.
- the annealing temperatures are between 300 ° C and 700 ° C.
- the annealing is carried out in continuous furnaces, which is a relatively large effort given the mostly small cross-sections of the parts.
- annealing bundles e.g. in hood furnaces is created at the contact points of the parts, e.g. local diffusion welding, so-called glue, between individual turns of wound wire or strip, due to diffusion processes. These cause during further processing, i.e. during unwinding, material tears on the surface. This results in surface defects. If this does not cause a committee, extensive rework is required. Adhesives on annealed non-ferrous metal parts are of course highly undesirable.
- Nonferrous metals are understood to mean alloys with the main components copper, tin, aluminum and lead, with numerous other components also being considered, such as magnesium, nickel and others.
- the invention has for its object to provide a method with which non-ferrous metal parts, in particular non-ferrous metal coils, can be annealed without glue in hood furnaces.
- Fig. 1 shows the copper-tin state diagram
- Fig. 2 shows the time course of the temperature and the composition of a protective gas atmosphere for adhesive-free bronze wire treatment.
- Fig. 1 shows the state diagram of copper-tin alloys.
- the ⁇ crystal at 520 ° C eutectoid decays into ⁇ + ⁇
- the ⁇ phase changes at a temperature of about 350 ° C in turn eutectoid in ⁇ + ⁇ um, with the compound Cu 3 ⁇ Sn 8 the ⁇ phase and Cu 3 Sn the ⁇ phase.
- This transformation is extremely slow, so that even if they have been slowly cooled, technical alloys have ( ⁇ + ⁇ ) eutectoid in the final state.
- the tin concentration differences within a crystal can be up to 10%. Homogenization annealing aims to compensate for these differences as much as possible. Dissolution of the ⁇ component is achieved during annealing in the range from 650 ° C to 700 ° C, which results in a considerable increase in elongation. The tensile strength increases with increasing elongation.
- Copper-tin alloys are usually cast in an air atmosphere and are usually cold formed. This means that the surface is strongly oxidized.
- FIG. 2 An example of such a treatment is explained in FIG. 2.
- a gas mixture with 15 vol .-% CO 2 (rest N 2 ) ensured the preservation of the existing oxide layers during the heating and holding time and, depending on the alloying elements, for example during intermediate annealing of wires that had already been cold-formed, performed an additional one even at temperatures of 400 ° C Oxidation caused by the CO 2 portion.
- the protective coating of the surface with a thin oxide layer prevented the exudation from the annealing material and the batches were annealed without glue.
- better conditions were created for the homogenization process.
- the N 2 / CO 2 protective gas atmosphere was exchanged for a pure hydrogen atmosphere at the end of the holding time. This was for the end of the Holding time and greatly reducing conditions for the cooling time were created and the oxide layers protecting against sticking were broken down. The batches were annealed bright and glue-free. The change in the relevant parameters over time is shown again in the following overview:
- the heat treatment of wire cast in air which already has a pronounced oxide layer, would also be possible in the holding phase with an inert protective gas atmosphere, e.g. with pure nitrogen.
- the oxide layer could then be reduced with hydrogen in the cooling phase in order to achieve a bright annealing result.
Landscapes
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT97951214T ATE211184T1 (de) | 1996-12-18 | 1997-11-17 | Verfahren zum kleberfreien glühen von buntmetallteilen |
JP52722498A JP2001506317A (ja) | 1996-12-18 | 1997-11-17 | 融着部のない非鉄金属部材の焼き鈍しのための方法 |
EP97951214A EP0946776B1 (de) | 1996-12-18 | 1997-11-17 | Verfahren zum kleberfreien glühen von buntmetallteilen |
US09/319,858 US6159307A (en) | 1996-12-18 | 1997-11-17 | Method of annealing nonferrous metal parts without stickers |
UA99074129A UA47512C2 (uk) | 1996-12-18 | 1997-11-17 | Спосіб уникнення адгезії в процесі відпалювання об'єктів із сплавів кольорових металів |
DE59705922T DE59705922D1 (de) | 1996-12-18 | 1997-11-17 | Verfahren zum kleberfreien glühen von buntmetallteilen |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19652607A DE19652607A1 (de) | 1996-12-18 | 1996-12-18 | Verfahren zum kleberfreien Glühen von Buntmetallteilen |
DE19652607.8 | 1996-12-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998027243A1 true WO1998027243A1 (de) | 1998-06-25 |
Family
ID=7815081
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1997/006394 WO1998027243A1 (de) | 1996-12-18 | 1997-11-17 | Verfahren zum kleberfreien glühen von buntmetallteilen |
Country Status (9)
Country | Link |
---|---|
US (1) | US6159307A (de) |
EP (1) | EP0946776B1 (de) |
JP (1) | JP2001506317A (de) |
AT (1) | ATE211184T1 (de) |
DE (2) | DE19652607A1 (de) |
ES (1) | ES2170425T3 (de) |
TW (1) | TW486521B (de) |
UA (1) | UA47512C2 (de) |
WO (1) | WO1998027243A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6457992B2 (en) * | 1999-02-08 | 2002-10-01 | 3Com Corporation | Visual feedback system for electronic device |
JP2010248593A (ja) * | 2009-04-17 | 2010-11-04 | Hitachi Cable Ltd | 電気・電子部品用銅合金材およびその製造方法 |
NO345511B1 (en) * | 2019-01-17 | 2021-03-22 | Norsk Hydro As | Method for and equipment for suppressing discoloration of Al-Mg products |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5510903A (en) * | 1978-07-07 | 1980-01-25 | Hitachi Ltd | Juicer |
JPS55104462A (en) * | 1979-02-01 | 1980-08-09 | Mitsubishi Metal Corp | Oxygen-free copper wire base material |
JPS57185963A (en) * | 1981-05-07 | 1982-11-16 | Hitachi Cable Ltd | Annealing method for copper or copper alloy material |
JPS613876A (ja) * | 1984-06-19 | 1986-01-09 | Nippon Mining Co Ltd | 耐食性に優れた銅合金及び同合金の表面処理方法 |
DE4207394C1 (de) * | 1992-03-09 | 1993-02-11 | Messer Griesheim Gmbh, 6000 Frankfurt, De |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US896811A (en) * | 1908-02-06 | 1908-08-25 | Edison Storage Battery Co | Metallic film for use with storage-battery electrodes and process of preparing the same. |
US1815505A (en) * | 1929-11-15 | 1931-07-21 | Oscar J Wilbor | Bright annealing of metals |
DE669520C (de) * | 1937-11-06 | 1938-12-28 | Felten & Guilleaume Carlswerk | Verfahren zum Verhueten des Zusammenbackens von Draehten, Blechen oder Baendern, insbesondere aus Schwermetallen, beim Blankgluehen |
US2379736A (en) * | 1939-11-06 | 1945-07-03 | Nat Agrol Company Inc | Method of making a catalyst and resulting product |
US2320962A (en) * | 1941-09-26 | 1943-06-01 | Westinghouse Electric & Mfg Co | Treatment of copper-oxide rectifiers with nitrogen |
US2810667A (en) * | 1952-10-14 | 1957-10-22 | Siemens Ag | Process for heat-treating metals in a space containing a non-oxidizing protective gas atmosphere |
DE3234863C2 (de) * | 1982-09-21 | 1986-04-10 | Messer Griesheim Gmbh, 6000 Frankfurt | Verfahren und Vorrichtung zum Blankglühen von metallischen Werkstücken mit Stickstoff als Schutzgas |
US4443274A (en) * | 1982-12-03 | 1984-04-17 | Olin Corporation | Process for forming a protective film on Cu-Sn alloys |
-
1996
- 1996-12-18 DE DE19652607A patent/DE19652607A1/de not_active Ceased
-
1997
- 1997-11-15 TW TW086117093A patent/TW486521B/zh not_active IP Right Cessation
- 1997-11-17 AT AT97951214T patent/ATE211184T1/de not_active IP Right Cessation
- 1997-11-17 ES ES97951214T patent/ES2170425T3/es not_active Expired - Lifetime
- 1997-11-17 JP JP52722498A patent/JP2001506317A/ja active Pending
- 1997-11-17 UA UA99074129A patent/UA47512C2/uk unknown
- 1997-11-17 WO PCT/EP1997/006394 patent/WO1998027243A1/de active IP Right Grant
- 1997-11-17 DE DE59705922T patent/DE59705922D1/de not_active Expired - Lifetime
- 1997-11-17 US US09/319,858 patent/US6159307A/en not_active Expired - Fee Related
- 1997-11-17 EP EP97951214A patent/EP0946776B1/de not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5510903A (en) * | 1978-07-07 | 1980-01-25 | Hitachi Ltd | Juicer |
JPS55104462A (en) * | 1979-02-01 | 1980-08-09 | Mitsubishi Metal Corp | Oxygen-free copper wire base material |
JPS57185963A (en) * | 1981-05-07 | 1982-11-16 | Hitachi Cable Ltd | Annealing method for copper or copper alloy material |
JPS613876A (ja) * | 1984-06-19 | 1986-01-09 | Nippon Mining Co Ltd | 耐食性に優れた銅合金及び同合金の表面処理方法 |
DE4207394C1 (de) * | 1992-03-09 | 1993-02-11 | Messer Griesheim Gmbh, 6000 Frankfurt, De |
Non-Patent Citations (4)
Title |
---|
DATABASE WPI Section Ch Week 8551, Derwent World Patents Index; Class M13, AN 85-321876, XP002058985 * |
PATENT ABSTRACTS OF JAPAN vol. 004, no. 159 (C - 030) 6 November 1980 (1980-11-06) * |
PATENT ABSTRACTS OF JAPAN vol. 007, no. 034 (C - 150) 10 February 1983 (1983-02-10) * |
PATENT ABSTRACTS OF JAPAN vol. 010, no. 144 (C - 349) 27 May 1986 (1986-05-27) * |
Also Published As
Publication number | Publication date |
---|---|
DE59705922D1 (de) | 2002-01-31 |
EP0946776A1 (de) | 1999-10-06 |
EP0946776B1 (de) | 2001-12-19 |
DE19652607A1 (de) | 1998-06-25 |
JP2001506317A (ja) | 2001-05-15 |
ATE211184T1 (de) | 2002-01-15 |
US6159307A (en) | 2000-12-12 |
TW486521B (en) | 2002-05-11 |
ES2170425T3 (es) | 2002-08-01 |
UA47512C2 (uk) | 2002-07-15 |
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