EP0346645B1 - Utilisation d'un alliage à base de cuivre durcissable par vieillissement - Google Patents
Utilisation d'un alliage à base de cuivre durcissable par vieillissement Download PDFInfo
- Publication number
- EP0346645B1 EP0346645B1 EP89109136A EP89109136A EP0346645B1 EP 0346645 B1 EP0346645 B1 EP 0346645B1 EP 89109136 A EP89109136 A EP 89109136A EP 89109136 A EP89109136 A EP 89109136A EP 0346645 B1 EP0346645 B1 EP 0346645B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- casting
- zirconium
- copper alloy
- copper
- blocks
- 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.)
- Expired - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0637—Accessories therefor
- B22D11/0648—Casting surfaces
- B22D11/066—Side dams
Definitions
- the invention relates to the use of a hardenable copper alloy for the production of blocks for the side dams of double belt casting systems, in which the melt solidifies in the gap of two strips guided in parallel.
- the side dams consist of metal blocks which are lined up on an endless belt, for example made of steel, and which move in the longitudinal direction synchronously with the casting belts.
- the metallic dam blocks laterally delimit the mold cavity formed by the casting belts.
- a hardenable copper alloy is described as a material for the blocks of side dams in US Pat. No. 3,955,615.
- This alloy consisting of 1.5 to 2.5% nickel, 0.4 to 0.9% silicon, 0.1 to 0.5% chromium and 0.1 to 0.3% iron, the rest of copper, is usually used in double belt casting plants used for the continuous continuous casting of copper.
- the side dam blocks made from this copper alloy tend to experience fatigue cracks in the area of the T-slot after a relatively short period of operation.
- the alloy also has a relatively low electrical conductivity with about 35% IACS and thus also a too low thermal conductivity.
- copper-based alloys containing beryllium are also unsuitable for the production of side dam blocks, since damage to health when machining or regrinding the blocks cannot be ruled out with certainty.
- the object of the present invention is to provide a material for the production of casting molds which is insensitive to cracking under a thermal shock treatment and which also has a high heat resistance.
- the solution to this problem according to the invention consists in the use of a hardenable copper alloy of 1.6 to 2.4% nickel, 0.5 to 0.8% silicon, 0.01 to 0.20% zirconium, the rest of copper including production-related impurities and more Processing additives as a material for the production of casting molds that are subject to permanent changing temperature stress, in particular blocks for the side dams of double belt casting plants.
- a hardenable copper alloy of 1.6 to 2.4% nickel, 0.5 to 0.8% silicon, 0.01 to 0.20% zirconium, the rest of copper including production-related impurities and more Processing additives as a material for the production of casting molds that are subject to permanent changing temperature stress, in particular blocks for the side dams of double belt casting plants.
- an addition of up to 0.4% chromium and - if necessary to reduce the grain growth during solution annealing - an iron addition of up to 0.2% is particularly advantageous.
- the specific effect of the zirconium on the insensitivity of the copper material to crack formation is not adversely affected
- Deoxidants such as boron, lithium, magnesium or phosphorus, up to a maximum of 0.03%, as well as usual manufacturing-related impurities also have no negative influence on the tendency to crack of the alloy to be used according to the invention.
- a hardenable copper-nickel-silicon-zirconium alloy is already known from DE-OS 26 34 614, the composition of which consists of 1 to 5% nickel, 0.3 to 1.5% silicon, 0.05 to 0.35 % Zirconium, rest copper.
- this known alloy is to be used for the production of objects which, in the hardenable state, must have increased toughness at room temperature.
- the description shows that the effect of zirconium is particularly favorable if the material is subjected to a cold deformation of 10 to 40% between solution annealing and hardening.
- zirconium in the merely hardened state and not cold-formed before hardening, practically eliminates the sensitivity to thermal shock of the known copper-nickel-silicon alloy. Additional studies also found that the heat resistance of the alloy to be used according to the invention at 500 ° C. significantly exceeds that of the materials previously used for the production of blocks of side dams.
- alloys A, B, C Three alloys to be used according to the invention (alloys A, B, C) and three comparative alloys (alloys D, E, F) show how critical the composition of the respective example alloys is in order to achieve the desired combination of properties.
- the composition of the example alloys is given in Table 1 in% by weight.
- Alloys A and D were melted in a vacuum furnace, the remaining alloys were melted in air in a medium-frequency furnace, each cast into circular blocks with a diameter of 173 mm and extruded into rods of the format 55 ⁇ 55 mm. After solution annealing at 790 to 810 ° C, the bars were cured at 480 ° C for four hours.
- the tensile strength R m at room temperature, the Brinell hardness HB (2.5 / 62.5), the electrical conductivity and the heat resistance (R m at 500 ° C.) were determined on the example alloys.
- the thermal shock behavior was finally checked on blocks measuring 50 ⁇ 50 ⁇ 40 mm.
- the blocks were first kept at 500 ° C. for two hours and then quenched in water at 25 ° C. It was usually possible to determine with the naked eye whether the blocks showed cracks or were free of cracks after the thermal shock test.
- the T-slot of the blocks was checked with a microscope at 10x magnification. The extent of the cracks found, which all originated from the T-slot of the blocks, was mainly in the range from 1 to 7 mm, in individual cases the cracks even reached a length of over 20 mm.
- the comparison shows that the alloys A, B and C to be used according to the invention have comparable strength properties at room temperature, both in terms of their electrical properties and, in particular, in terms of their heat resistance and thermal shock behavior, overall more favorable values than the comparative alloys D, E and F.
- the copper alloy to be used according to the invention is therefore outstandingly suitable for all casting molds which are subject to a permanently changing temperature load during the casting process.
- these are above all casting wheels and casting belts, as well as die casting molds and pressure pistons for die casting machines.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT89109136T ATE65437T1 (de) | 1988-06-14 | 1989-05-20 | Verwendung einer aushaertbaren kupferlegierung. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3820203A DE3820203A1 (de) | 1988-06-14 | 1988-06-14 | Verwendung einer aushaertbaren kupferlegierung |
DE3820203 | 1988-06-14 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0346645A1 EP0346645A1 (fr) | 1989-12-20 |
EP0346645B1 true EP0346645B1 (fr) | 1991-07-24 |
Family
ID=6356508
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89109136A Expired - Lifetime EP0346645B1 (fr) | 1988-06-14 | 1989-05-20 | Utilisation d'un alliage à base de cuivre durcissable par vieillissement |
Country Status (18)
Country | Link |
---|---|
US (1) | US5069270A (fr) |
EP (1) | EP0346645B1 (fr) |
JP (1) | JP2904804B2 (fr) |
CN (1) | CN1018937B (fr) |
AT (1) | ATE65437T1 (fr) |
AU (1) | AU615753B2 (fr) |
BR (1) | BR8902818A (fr) |
CA (1) | CA1333666C (fr) |
DE (2) | DE3820203A1 (fr) |
ES (1) | ES2025354B3 (fr) |
FI (1) | FI88885C (fr) |
GR (1) | GR3002363T3 (fr) |
MX (1) | MX170249B (fr) |
PL (1) | PL164673B1 (fr) |
RU (1) | RU1831510C (fr) |
SA (1) | SA89100003B1 (fr) |
TW (1) | TW198068B (fr) |
ZA (1) | ZA894493B (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008015096A1 (de) | 2008-03-19 | 2009-09-24 | Kme Germany Ag & Co. Kg | Verfahren zur Herstellung von Gießformteilen sowie nach dem Verfahren hergestellte Gießformteile |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07103431B2 (ja) * | 1988-11-09 | 1995-11-08 | 株式会社日立製作所 | シエル鋳型造型用金型及びその製造方法 |
US20040101540A1 (en) * | 1999-09-01 | 2004-05-27 | John Cooker | Oral delivery system and method for making same |
CN1688732B (zh) * | 2002-09-13 | 2010-05-26 | Gbc金属有限责任公司 | 时效硬化型铜基合金及其制备工艺 |
JP4255330B2 (ja) * | 2003-07-31 | 2009-04-15 | 日鉱金属株式会社 | 疲労特性に優れたCu−Ni−Si系合金部材 |
JP4930993B2 (ja) * | 2007-01-05 | 2012-05-16 | 住友軽金属工業株式会社 | 銅合金材料及びその製造方法並びに溶接機器の電極部材 |
CN102418003B (zh) * | 2011-11-24 | 2013-05-08 | 中铝洛阳铜业有限公司 | 一种镍铬硅青铜合金的加工工艺方法 |
DE102018122574B4 (de) * | 2018-09-14 | 2020-11-26 | Kme Special Products Gmbh | Verwendung einer Kupferlegierung |
CN114645154B (zh) * | 2020-12-21 | 2023-06-27 | 广东省钢铁研究所 | 一种高硬度铜合金的制备方法 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3955615A (en) * | 1973-09-28 | 1976-05-11 | Hazelett Strip-Casting Corporation | Twin-belt continuous casting apparatus |
US4155396A (en) * | 1975-02-10 | 1979-05-22 | Hazelett Strip-Casting Corporation | Method and apparatus for continuously casting copper bar product |
DE2634614A1 (de) * | 1976-07-31 | 1978-02-02 | Kabel Metallwerke Ghh | Verwendung einer aushaertbaren kupferlegierung zur herstellung von gegenstaenden mit erhoehter zaehigkeit |
JPS55128351A (en) * | 1979-03-27 | 1980-10-04 | Hitachi Zosen Corp | Casting mold material for continuous casting equipment |
GB2099339A (en) * | 1981-05-22 | 1982-12-08 | Liege Usines Cuivre Zinc | Improvements in dam-blocks for continuous metal casting |
JPS58212839A (ja) * | 1982-06-03 | 1983-12-10 | Mitsubishi Metal Corp | 連続鋳造鋳型用Cu合金 |
JPS59159243A (ja) * | 1983-03-02 | 1984-09-08 | Hitachi Ltd | 鋳造用金型 |
JPH0764221B2 (ja) * | 1987-10-20 | 1995-07-12 | 日産自動車株式会社 | 差動制限力制御装置 |
JPH01153246A (ja) * | 1987-12-07 | 1989-06-15 | Hitachi Ltd | 切屑回収ダクト |
-
1988
- 1988-06-14 DE DE3820203A patent/DE3820203A1/de not_active Withdrawn
-
1989
- 1989-05-11 JP JP1116222A patent/JP2904804B2/ja not_active Expired - Fee Related
- 1989-05-16 FI FI892340A patent/FI88885C/fi active IP Right Grant
- 1989-05-20 DE DE8989109136T patent/DE58900190D1/de not_active Expired - Lifetime
- 1989-05-20 AT AT89109136T patent/ATE65437T1/de not_active IP Right Cessation
- 1989-05-20 EP EP89109136A patent/EP0346645B1/fr not_active Expired - Lifetime
- 1989-05-20 ES ES89109136T patent/ES2025354B3/es not_active Expired - Lifetime
- 1989-05-26 TW TW078104077A patent/TW198068B/zh active
- 1989-05-30 RU SU4614266A patent/RU1831510C/ru active
- 1989-06-05 MX MX016324A patent/MX170249B/es unknown
- 1989-06-13 CN CN89104092A patent/CN1018937B/zh not_active Expired
- 1989-06-13 ZA ZA894493A patent/ZA894493B/xx unknown
- 1989-06-13 AU AU36306/89A patent/AU615753B2/en not_active Ceased
- 1989-06-13 BR BR898902818A patent/BR8902818A/pt not_active IP Right Cessation
- 1989-06-13 PL PL89279973A patent/PL164673B1/pl not_active IP Right Cessation
- 1989-06-14 CA CA000602712A patent/CA1333666C/fr not_active Expired - Fee Related
- 1989-06-14 US US07/365,909 patent/US5069270A/en not_active Expired - Lifetime
- 1989-08-21 SA SA89100003A patent/SA89100003B1/ar unknown
-
1991
- 1991-07-25 GR GR91400919T patent/GR3002363T3/el unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008015096A1 (de) | 2008-03-19 | 2009-09-24 | Kme Germany Ag & Co. Kg | Verfahren zur Herstellung von Gießformteilen sowie nach dem Verfahren hergestellte Gießformteile |
WO2009115081A1 (fr) | 2008-03-19 | 2009-09-24 | Kme Germany Ag & Co. Kg | Procédé de production d'éléments de moule de coulée, et éléments de moule de coulée obtenus suivant ce procédé |
Also Published As
Publication number | Publication date |
---|---|
MX170249B (es) | 1993-08-12 |
FI892340A0 (fi) | 1989-05-16 |
US5069270A (en) | 1991-12-03 |
JP2904804B2 (ja) | 1999-06-14 |
DE3820203A1 (de) | 1989-12-21 |
CA1333666C (fr) | 1994-12-27 |
AU3630689A (en) | 1989-12-21 |
JPH01319642A (ja) | 1989-12-25 |
SA89100003B1 (ar) | 2000-01-22 |
CN1018937B (zh) | 1992-11-04 |
CN1041184A (zh) | 1990-04-11 |
PL164673B1 (pl) | 1994-09-30 |
FI88885C (fi) | 1993-07-26 |
EP0346645A1 (fr) | 1989-12-20 |
AU615753B2 (en) | 1991-10-10 |
ES2025354B3 (es) | 1992-03-16 |
DE58900190D1 (de) | 1991-08-29 |
TW198068B (fr) | 1993-01-11 |
RU1831510C (ru) | 1993-07-30 |
FI88885B (fi) | 1993-04-15 |
PL279973A1 (en) | 1990-01-08 |
FI892340A (fi) | 1989-12-15 |
ZA894493B (en) | 1990-03-28 |
ATE65437T1 (de) | 1991-08-15 |
BR8902818A (pt) | 1990-02-01 |
GR3002363T3 (en) | 1992-12-30 |
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