EP0346645B1 - Verwendung einer aushärtbaren Kupferlegierung - Google Patents

Verwendung einer aushärtbaren Kupferlegierung Download PDF

Info

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
Application number
EP89109136A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0346645A1 (de
Inventor
Horst Dipl.-Ing. Gravemann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KM Kabelmetal AG
Original Assignee
KM Kabelmetal AG
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 KM Kabelmetal AG filed Critical KM Kabelmetal AG
Priority to AT89109136T priority Critical patent/ATE65437T1/de
Publication of EP0346645A1 publication Critical patent/EP0346645A1/de
Application granted granted Critical
Publication of EP0346645B1 publication Critical patent/EP0346645B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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.

Landscapes

  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Continuous Casting (AREA)
  • Conductive Materials (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Dental Preparations (AREA)
  • Error Detection And Correction (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Adornments (AREA)
  • Mold Materials And Core Materials (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Metal Extraction Processes (AREA)
  • Macromonomer-Based Addition Polymer (AREA)
  • Laminated Bodies (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Materials For Medical Uses (AREA)
EP89109136A 1988-06-14 1989-05-20 Verwendung einer aushärtbaren Kupferlegierung Expired - Lifetime EP0346645B1 (de)

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
DE3820203 1988-06-14
DE3820203A DE3820203A1 (de) 1988-06-14 1988-06-14 Verwendung einer aushaertbaren kupferlegierung

Publications (2)

Publication Number Publication Date
EP0346645A1 EP0346645A1 (de) 1989-12-20
EP0346645B1 true EP0346645B1 (de) 1991-07-24

Family

ID=6356508

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89109136A Expired - Lifetime EP0346645B1 (de) 1988-06-14 1989-05-20 Verwendung einer aushärtbaren Kupferlegierung

Country Status (18)

Country Link
US (1) US5069270A (ar)
EP (1) EP0346645B1 (ar)
JP (1) JP2904804B2 (ar)
CN (1) CN1018937B (ar)
AT (1) ATE65437T1 (ar)
AU (1) AU615753B2 (ar)
BR (1) BR8902818A (ar)
CA (1) CA1333666C (ar)
DE (2) DE3820203A1 (ar)
ES (1) ES2025354B3 (ar)
FI (1) FI88885C (ar)
GR (1) GR3002363T3 (ar)
MX (1) MX170249B (ar)
PL (1) PL164673B1 (ar)
RU (1) RU1831510C (ar)
SA (1) SA89100003B1 (ar)
TW (1) TW198068B (ar)
ZA (1) ZA894493B (ar)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009115081A1 (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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009115081A1 (de) 2008-03-19 2009-09-24 Kme Germany Ag & Co. Kg Verfahren zur herstellung von giessformteilen sowie nach dem verfahren hergestellte giessformteile
DE102008015096A1 (de) 2008-03-19 2009-09-24 Kme Germany Ag & Co. Kg Verfahren zur Herstellung von Gießformteilen sowie nach dem Verfahren hergestellte Gießformteile

Also Published As

Publication number Publication date
JP2904804B2 (ja) 1999-06-14
PL279973A1 (en) 1990-01-08
FI88885B (fi) 1993-04-15
RU1831510C (ru) 1993-07-30
MX170249B (es) 1993-08-12
CN1041184A (zh) 1990-04-11
GR3002363T3 (en) 1992-12-30
FI892340A (fi) 1989-12-15
PL164673B1 (pl) 1994-09-30
AU3630689A (en) 1989-12-21
ZA894493B (en) 1990-03-28
FI88885C (fi) 1993-07-26
ATE65437T1 (de) 1991-08-15
SA89100003B1 (ar) 2000-01-22
EP0346645A1 (de) 1989-12-20
AU615753B2 (en) 1991-10-10
DE58900190D1 (de) 1991-08-29
CN1018937B (zh) 1992-11-04
ES2025354B3 (es) 1992-03-16
BR8902818A (pt) 1990-02-01
JPH01319642A (ja) 1989-12-25
FI892340A0 (fi) 1989-05-16
TW198068B (ar) 1993-01-11
CA1333666C (en) 1994-12-27
US5069270A (en) 1991-12-03
DE3820203A1 (de) 1989-12-21

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