CN1160771A - Separating-hardened copper alloy - Google Patents

Separating-hardened copper alloy Download PDF

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Publication number
CN1160771A
CN1160771A CN 96115175 CN96115175A CN1160771A CN 1160771 A CN1160771 A CN 1160771A CN 96115175 CN96115175 CN 96115175 CN 96115175 A CN96115175 A CN 96115175A CN 1160771 A CN1160771 A CN 1160771A
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CN
China
Prior art keywords
alloy
copper alloy
separating
copper
furnace
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Application number
CN 96115175
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Chinese (zh)
Inventor
王久彬
王世和
贾素芝
宋世超
胡嘉弟
叶富礼
郝森
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鞍山钢铁公司
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Application filed by 鞍山钢铁公司 filed Critical 鞍山钢铁公司
Priority to CN 96115175 priority Critical patent/CN1160771A/en
Publication of CN1160771A publication Critical patent/CN1160771A/en

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Abstract

The copper alloy is prepared through separating hardening process and contains Cr 0.30-1.20%, Zr 0.08-0.30%, Mg 0.08-0.15% and RE 0.05-0.10% other than Cu. The said alloy has excellent comprehensive performance. It is an ideal material for producing continuous casting crystallizer and is also suitable for blast tuyere, slag tuyere, nozzle of oxygen lance, arc furnace holder, anode below DC arc furnace and other fields.

Description

A kind of separating-hardened copper alloy
The invention belongs to the metallurgical casting material, particularly continuous casting is produced the spare parts material requested.
At present, in steelmaking production in metallurgical industry, replacing die casting by continuous casting is development trend.Be accompanied by the development of continuous casting technology, also all the more strict to the requirement of its crystallizer material, especially require it to have high hot strength and hardness.Facts have proved that along with improving constantly of continuous caster pulling rate, fine copper and yellow gold have been unsuitable for doing the crystallizer material.Generally adopt separating-hardened copper alloy to make crystallizer abroad, domestic middle and high fast crystallizer copper plate of plate blank continuous casting machine still fails to realize production domesticization all from external import.
Through update search, the patented technology of relevant separating-hardened copper alloy has both at home and abroad:
1. notification number is to disclose a kind of alloy in 10153/9 the document, its main component is: Cr0.15~0.6%, Zr0.1~0.25%, Ge0.01~0.15%, Nb or Ce0.01~0.08%, the characteristics of this alloy are to conduct electricity very well, but mechanical property is general, and it is applicable to the resistance welding electrode material.
2. the patent No. is to disclose a kind of alloy among the JP04210438, and its main component is Cr0.1~1.5%, Zr0.01~0.5%, Fe/Ni0.01~0.5%, Co1.3~5.0%, Ti0.2~2.0%.This alloy is owing to contain multiple alloying element, and production technique is difficult to control, simultaneously its non-constant of heat conductivility.
3. the patent No. is disclosed a kind of alloy in the JP04218629 document, and its composition is: Fe1.5~3.0%, and Pb0.005~0.4%, other constituent content summation is 0.001~2.00%.This kind alloy mechanical property is general, and heat conductivility is also relatively poor.
In a word, up to the present, middle and high fast continuous casting crystallizer for plate billet copper coin mainly adopts Cu-Cr, Cu-Zr, a few class alloys such as Cu-Cr-Zr.And Cu-Cr, Cu-Zr class alloy high-temp performance is general, and the pyro-oxidation resistance of Cu-Cr-Zr alloy is relatively poor, all is not the ideal material of making the copper coin crystallizer.
The objective of the invention is in order to overcome weakness such as existing alloy over-all properties is relatively poor, and a kind of existing higher hot strength, hot hardness are provided, have the good capacity of heat transmission and the separating-hardened copper alloy of high-temperature oxidation resistance simultaneously again.Make the needs of continuous cast mold in order to substitute import, to satisfy, thereby realize the production domesticization of continuous casting spare parts with material.
The present invention is achieved in that it adopts a kind of brand-new prescription, promptly contains Cr, Zr, Mg, RE alloying element in the alloy simultaneously, its composition consists of: Cr0.30~1.20%, Zr0.08~0.30%, Mg0.08~0.15%, RE0.05~0.10%, all the other are copper.
In the present invention, the purpose that adds Cr, Zr alloying element is to separate out Cr at matrix α in mutually 2Zr is to overcome the weakness of independent adding Cr or Zr.Add Cr or Zr element separately, though alloy at room temperature intensity is higher, hot strength is not high.Add Cr simultaneously, the Zr element, not only room temperature strength height, and hot strength is also high, good combination property.The purpose that adds the Mg element is to improve high temperature oxidation resistance and thermotolerance.The effect that adds the RE element mainly contains two: the one, remove impurity such as sulphur, selenium, bismuth in the alloy raw material, and purify alloy simultaneously; The 2nd, the heat conductivility of increase alloy.
Manufacture craft of the present invention is:
1. electrolysis copper coin (heating in medium frequency stove or electrical heater) in crucible is heated to 1200 ℃, makes its fusing.Carry out deoxidation at 1240 ℃~1280 ℃ then, deoxidation added Cr, Mg, Zr, RE alloy after ten minutes.The method that adds alloying element all adds with the master alloy form.Tapping temperature is controlled at below 1300 ℃.
2. casting ingot-forming behind the alloy melting carries out forge hot then.Forge at 700 ℃~950 ℃, the deformation rate of alloy pig is controlled at 80~150%.
3. the alloy pig after will forging carries out solid solution and separates out thermal treatment.
Solution heat treatment is in the neutral atmosphere process furnace alloy pig to be heated to 890 ℃~1000 ℃, is incubated and carries out Water Quenching after 2~6 hours.
Precipitation-hardening thermal treatment is in the neutral atmosphere process furnace alloy pig to be heated to 380 ℃~560 ℃, is incubated 2~5 hours, then at the stove internal cooling to room temperature.
The alloy pig of the above-mentioned art breading of process is processed into copper plate of crystallizer or other parts use for industry.
The alloy material of making according to prescription provided by the invention and technology has good comprehensive mechanical performance.Its tensile strength sigma b〉=360MPa, yield strength σ 8〉=240MPa, hardness HB 〉=160, softening temperature 〉=400 ℃, electric conductivity I, A, C% 〉=70%.
Advantages such as the present invention has overcome the deficiency of prior art, has prescription rationally, and technology is easy to control, and making processes is nontoxic, and over-all properties is good.The existing good hot strength of this alloy, hot hardness have the good capacity of heat transmission and high-temperature oxidation resistance again, and every performance all is better than Cu-Cr, Cu-Zr, and the Cu-Cr-Zr alloy of analogous components, and its over-all properties comparative result is listed table 1 in.The present invention is not only the ideal material of making continuous cast mold, but also can be widely used in fields such as blast-furnace tuyere, cinder notch, oxygen lance blow head, electric arc furnace clamper and direct current arc furnace bottom anode.Succeeding in developing of this alloy, alternative imported materials and items advantageously promotes China's continuous casting to produce the spare parts production domesticization, and has remarkable economic efficiency and social benefit.
The present invention is with prior art over-all properties contrast information slip 1
Embodiment:
Made three kinds of sclerosis copper alloys according to prescription of the present invention and manufacture craft, chemical ingredients sees Table 2.Its smelting technology is: the electrolysis copper coin is heated to 1200 ℃ of all fusings in Medium Frequency Induction Heating Furnace, adopts MAGNESIUM METAL to carry out deoxidation at 1250 ℃, and deoxidation added the Cu-Cr alloy after ten minutes, and the Cu-Zr-RE alloy pours into alloy pig under 1280 ℃ of temperature.Through forging and precipitation-hardening thermal treatment post-treatment finished product, the concrete manufacture craft of its alloy sees Table 3 then, and actual performance is listed table 4 in.
The actual constituent table 2 of embodiment of the invention copper alloy
Embodiment Chemical ingredients (wt%) All the other
??Cr ??Zr ??Mg ??RE
????1 ??0.32 ??0.09 ??0.10 ??0.06 ???Cu
????2 ??0.42 ??0.13 ??0.12 ??0.08 ???Cu
????3 ??0.80 ??0.12 ??0.14 ??0.09 ???Cu
The treatment process table 3 of the embodiment of the invention
Embodiment Forging process Thermal treatment process
Heating temperature, ℃ Deformation ratio (%) Solid solution Precipitation-hardening
????1 ????800~900 ????120 970 ℃ of insulations shrend in 6 hours 400 ℃ are incubated 2 hours
????2 ????890~950 ????125 980 insulations shrend in 2 hours 480 ℃ are incubated 2 hours
????3 ????750~900 ????100 1000 ℃ of insulations shrend in 6 hours 550 ℃ are incubated 2 hours
The actual performance table 4 of the embodiment of the invention
Embodiment Mechanical property
bMPa 3MPa ??HB ?I,A,C% Softening temperature ℃
????1 ??360 ??240 ??160 ????88 ????540
????2 ??385 ??245 ??160 ????83 ????583
????3 ??390 ??240 ??165 ????78 ????590

Claims (6)

1, a kind of separating-hardened copper alloy is a matrix with Cu, it is characterized in that adding simultaneously in alloy Cr, Zr, Mg, RE alloying element, its component content (weight percent) is: Cr0.30~1.20%, Zr0.08~0.30%, Mg0.08~0.15%, RE0.05~0.10%.
2, copper alloy according to claim 1, the optimum content that it is characterized in that the Cr element is 0.5~1.0%.
3, copper alloy according to claim 1, the optimum content that it is characterized in that the Zr element is 0.1~0.2%.
4, copper alloy according to claim 1, the optimum content that it is characterized in that the Mg element is 0.08~0.13%.
5, copper alloy according to claim 1, the optimum content that it is characterized in that the RE element is 0.06~0.08%.
6, a kind of manufacture craft of separating-hardened copper alloy is characterized in that:
1. the electrolysis copper coin is heated to 1200 ℃, deoxidation is carried out at 1240 ℃~1280 ℃ in the fusing back, adds Cr, Zr, Mg, RE alloy with the master alloy form then, and tapping temperature is less than 1300 ℃;
2. alloy pig carries out forge hot at 700 ℃~950 ℃, and its deformation rate is controlled at 80~150% and is advisable;
3. solution heat treatment is to carry out in the neutral atmosphere process furnace, and Heating temperature is 890 ℃~1000 ℃, is incubated 2~6 hours, carries out shrend then;
Precipitation-hardening thermal treatment is in the neutral atmosphere process furnace alloy pig to be heated to 380 ℃~560 ℃, is incubated 2~5 hours, cools to room temperature then with the furnace.
CN 96115175 1996-03-26 1996-03-26 Separating-hardened copper alloy CN1160771A (en)

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Application Number Priority Date Filing Date Title
CN 96115175 CN1160771A (en) 1996-03-26 1996-03-26 Separating-hardened copper alloy

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Application Number Priority Date Filing Date Title
CN 96115175 CN1160771A (en) 1996-03-26 1996-03-26 Separating-hardened copper alloy

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CN1160771A true CN1160771A (en) 1997-10-01

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103397221A (en) * 2013-07-01 2013-11-20 安徽三联泵业股份有限公司 Copper alloy for drawing mould and preparation method thereof
CN103397223A (en) * 2013-07-01 2013-11-20 安徽三联泵业股份有限公司 Refrigerator mould copper alloy and preparation method thereof
CN103397222A (en) * 2013-07-01 2013-11-20 安徽三联泵业股份有限公司 Stainless steel drawing mould copper alloy and preparation method thereof
CN105506344A (en) * 2015-12-15 2016-04-20 苏州华安矿业科技有限公司 Mineral ultrasonic atomization nozzle
CN105543540A (en) * 2015-12-26 2016-05-04 汕头华兴冶金设备股份有限公司 Copper chromium zirconium alloy and preparing method thereof
WO2017101148A1 (en) * 2015-12-15 2017-06-22 苏州华安矿业科技有限公司 Porous nozzle for mining
WO2017101147A1 (en) * 2015-12-15 2017-06-22 苏州华安矿业科技有限公司 Ultrasonic atomizing nozzle
CN107849699A (en) * 2015-08-06 2018-03-27 日产自动车株式会社 Sliding component and its manufacture method

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103397221A (en) * 2013-07-01 2013-11-20 安徽三联泵业股份有限公司 Copper alloy for drawing mould and preparation method thereof
CN103397223A (en) * 2013-07-01 2013-11-20 安徽三联泵业股份有限公司 Refrigerator mould copper alloy and preparation method thereof
CN103397222A (en) * 2013-07-01 2013-11-20 安徽三联泵业股份有限公司 Stainless steel drawing mould copper alloy and preparation method thereof
CN107849699A (en) * 2015-08-06 2018-03-27 日产自动车株式会社 Sliding component and its manufacture method
CN105506344A (en) * 2015-12-15 2016-04-20 苏州华安矿业科技有限公司 Mineral ultrasonic atomization nozzle
WO2017101148A1 (en) * 2015-12-15 2017-06-22 苏州华安矿业科技有限公司 Porous nozzle for mining
WO2017101147A1 (en) * 2015-12-15 2017-06-22 苏州华安矿业科技有限公司 Ultrasonic atomizing nozzle
CN105543540A (en) * 2015-12-26 2016-05-04 汕头华兴冶金设备股份有限公司 Copper chromium zirconium alloy and preparing method thereof

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