JPH08199263A - Copper (Cu) -chrome (Cr) -cerium (Ce) -lanthanum (La) alloy and its heat treatment method - Google Patents
Copper (Cu) -chrome (Cr) -cerium (Ce) -lanthanum (La) alloy and its heat treatment methodInfo
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- JPH08199263A JPH08199263A JP833495A JP833495A JPH08199263A JP H08199263 A JPH08199263 A JP H08199263A JP 833495 A JP833495 A JP 833495A JP 833495 A JP833495 A JP 833495A JP H08199263 A JPH08199263 A JP H08199263A
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Abstract
(57)【要約】 （修正有）
【目的】 基地の硬度ＨＲＢ７０−９０、導電率ＩＡＣ
Ｓ７０−９０％の範囲を維持できる合金の提供。
【構成】 重量％で、Ｃｅ＋Ｌａ＝0.05〜0.50、Ｎｄ＋
Ｐｒ：0.10以下、Ｃｒ：0.20〜1.50で、残り、Ｃｕ＋Ａ
ｇの合金成分の組成のＣｕ−Ｃｒ−Ｃｅ−Ｌａ合金。こ
の成分の合金を、熱間加工、溶体化処理、冷間加工、時
効硬化熱処理、矯正、しあげ及び部品製造する、基地の
硬度ＨＲＢ７０−９０、ＩＡＣＳ７０−９０％の範囲を
維持できるＣｕ−Ｃｒ−Ｃｅ−Ｌａ合金の加工熱処理方
法。(57) [Summary] (Modified) [Purpose] Hardness of base HRB70-90, conductivity IAC
Provide an alloy that can maintain the range of S70-90%. [Structure] In weight%, Ce + La = 0.05 to 0.50, Nd +
Pr: 0.10 or less, Cr: 0.20 to 1.50, the rest Cu + A
A Cu-Cr-Ce-La alloy having a composition of g alloy components. The alloy of this component is hot-worked, solution-treated, cold-worked, age-hardened, heat-treated, straightened, raised and parts are manufactured. -Processing heat treatment method of Ce-La alloy.
Description
【０００１】[0001]
【産業上の利用分野】本発明は銅−クローム−セリュー
ム−ランタン合金とその加工熱処理方法に関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a copper-chrome-cerium-lanthanum alloy and a process for heat treatment thereof.
【０００２】[0002]
【従来の技術】適当量のクローム（Ｃｒ）を含有した銅
（Ｃｕ）−クローム（Ｃｒ）合金は適当な加工熱処理に
より、導電率を純銅の８０％以上維持しながら強度は純
銅の２−３倍程度まで向上させることができるので、工
業的には電気及び電子用分野に有用に使用されている。2. Description of the Related Art A copper (Cu) -chrome (Cr) alloy containing an appropriate amount of chromium (Cr) is subjected to an appropriate thermomechanical treatment to maintain the electrical conductivity of 80% or more of that of pure copper and the strength of the pure copper is 2-3. Since it can be doubled, it is industrially usefully used in the electric and electronic fields.
【０００３】[0003]
【発明が解決しようとする課題】然しながら、大容量電
気接点や抵抗熔接用電極として使用される場合にはその
使用特性上反復的に高い加圧力下で大電流が流れるよう
になるので抵抗による高い熱が発生する状況であるから
接点部の消耗が大きく、場合によっては彼接触物に焼着
く所謂スティッキング（ｓｔｉｃｋｉｎｇ）現象が問題
になる場合がある。However, when used as a large-capacity electric contact or an electrode for resistance welding, a large current flows repeatedly under a high pressing force due to its use characteristics, and therefore a high resistance is required. Since heat is generated, the contact portion is largely consumed, and in some cases, a so-called sticking phenomenon in which the contact is burned may become a problem.
【０００４】このような問題点を改善する目的で第３の
特定元素を添加する場合に、その元素の種類と添加量の
増加によって硬度はある程度向上できるが導電率はむし
ろ大きく阻害される場合が一般的な現象である。When the third specific element is added for the purpose of improving such a problem, the hardness can be improved to some extent by increasing the kind and the addition amount of the element, but the conductivity may be rather greatly hindered. This is a general phenomenon.
【０００５】[0005]
【課題を解決するための手段】このような観点を考慮し
て本発明は、銅（Ｃｕ）−クローム（Ｃｒ）合金に銅
（Ｃｕ）に対して固溶限度が低くて反応性の良いセリュ
ーム（Ｃｅ）とランタン（Ｌａ）を少量添加して溶体化
処理後４００−５５０℃で時効熱処理時微細な析出物を
均一に生成して基地の硬度と導電率が各々ＨＲＢ７０−
９０，ＩＡＣＳ７０−９０％の範囲を維持できる合金の
製造とその加工熱処理に関するもので、詳細な説明は次
のようである。SUMMARY OF THE INVENTION In consideration of the above points, the present invention provides a copper (Cu) -chrome (Cr) alloy which has a low solid solution limit with respect to copper (Cu) and is highly reactive. (Ce) and lanthanum (La) are added in small amounts, and after solution treatment, fine precipitates are uniformly formed during the aging heat treatment at 400-550 ° C., and the hardness and conductivity of the matrix are HRB70-.
The present invention relates to the production of an alloy capable of maintaining the 90, IACS 70-90% range and its thermomechanical treatment, and the detailed description is as follows.
【０００６】[0006]
【実施例】微量の銀（Ａｇ）を含有するかまたは含有し
ない銅（Ｃｕ）を主成分とし、発明材料の導電率と硬度
の目標水準を考慮して、クローム（Ｃｒ）の総合量は0.
20−1.5 ％（重量百分率）の範囲で添加し、これに加工
熱処理時にＣｕx ＣｅとＣｕy Ｌａのような析出物を生
成できる成分でセリューム（Ｃｅ）、ランタン（Ｌａ）
等を0.05−0.50％（重量百分率）範囲で添加して合金し
た鋳塊を製造する。EXAMPLE The main amount of copper (Cu) with or without a trace amount of silver (Ag), the total amount of chrome (Cr) is 0 in consideration of the target level of conductivity and hardness of the inventive material. .
It is added in the range of 20-1.5% (percentage by weight), and is a component capable of forming precipitates such as Cu x Ce and Cu y La during thermomechanical treatment, and cerum (Ce) and lanthanum (La).
Etc. are added in the range of 0.05-0.50% (weight percentage) to produce an alloyed ingot.
【０００７】上記においてセリューム（Ｃｅ）とランタ
ン（Ｌａ）の総合量を0.05−0.50％（重量百分率）の範
囲で添加するためにセリューム（Ｃｅ）が約５０％（重
量百分率）−ランタン（Ｌａ）が約２５％（重量百分
率）−ニオディミューム（Ｎｄ）が約１５％（重量百分
率）−プラセオディミューム（Ｐｒ）が約５％（重量百
分率）の含量比で構成された複合物であるミシュメタル
（Ｍｉｓｃｈｍｅｔａｌ）を0.05％−0.50％（重量百分
率）範囲で添加すると効果的である。In order to add the total amount of cerium (Ce) and lanthanum (La) in the range of 0.05-0.50% (percentage by weight), about 50% (percentage by weight) of cerium (Ce) -lanthanum (La) is added. Is about 25% (percentage by weight) -Niodimume (Nd) is about 15% (percentage by weight) -Praseodymume (Pr) is about 5% (percentage by weight). It is effective to add (Mischmetal) in the range of 0.05% to 0.50% (weight percentage).
【０００８】そしてこれを次のような３種類の加工熱処
理工程を経て合金素材や部品を製造することによって硬
度と導電率を各々の目標水準であるＨＲＢ７０−９０，
ＩＡＣＳ７０−９０％範囲を満足させるとともに耐久性
やスティッキング（ｓｔｉｃｋｉｎｇ）現象の改善等、
接点材料や抵抗熔接電極としての諸般特性を向上できる
ようにした。Then, the alloy material and parts are manufactured through the following three types of thermo-mechanical processing steps to obtain the hardness and the electrical conductivity which are the target levels of HRB70-90,
Satisfying the IACS 70-90% range and improving durability and sticking phenomenon.
Various characteristics as contact materials and resistance welding electrodes have been improved.
【０００９】イ．第１工程案 （１）熱間加工→（２）溶体化処理→（３）冷間加工→
（４）時効硬化熱処理→（５）矯正、しあげ及び部品製
造 ロ．第２工程案 （１）熱間加工→（２）溶体化処理→（４）時効硬化熱
処理→（３）冷間加工→（５）矯正、しあげ及び部品製
造 ハ．第３工程案 （１）熱間加工→（２）溶体化処理→（４）時効硬化熱
処理→（５）矯正、しあげ及び部品製造 上記の加工熱処理工程において各項目別処理条件は次の
ようである。A. First process plan (1) Hot working → (2) Solution heat treatment → (3) Cold working →
(4) Age hardening heat treatment → (5) Straightening, lifting and parts manufacturing b. Second process plan (1) Hot working → (2) Solution heat treatment → (4) Age hardening heat treatment → (3) Cold working → (5) Straightening, lifting and parts manufacturing c. Third process plan (1) Hot working → (2) Solution heat treatment → (4) Age hardening heat treatment → (5) Straightening, lifting and parts manufacturing In the above-mentioned heat treatment process, the treatment conditions for each item are as follows. Is.
【００１０】（１）熱間加工：８００−９５０℃で行う
し鋳造組織を除去できる加工比で鍛造、圧延、圧出等を
行う。 （２）溶体化処理：８００−１０５０℃で３０分以上維
持した後水冷、油冷等で急冷する。(1) Hot working: Performed at 800-950 ° C., and forged, rolled, extruded, etc. at a working ratio capable of removing the cast structure. (2) Solution treatment: After maintaining at 800-1050 ° C. for 30 minutes or more, quenching with water cooling, oil cooling or the like.
【００１１】（３）冷間加工：常温で圧延、鍛造、引抜
等を行う。 （４）時効硬化熱処理：４００−５５０℃で１時間以上
維持した後水冷、油冷、空冷等で冷却する熱処理を行
う。(3) Cold working: rolling, forging, drawing, etc. are carried out at room temperature. (4) Age hardening heat treatment: A heat treatment of maintaining at 400 to 550 ° C. for 1 hour or more and then cooling by water cooling, oil cooling, air cooling or the like is performed.
【００１２】（５）矯正、しあげ及び部品製造 板、棒、線等の形状は直線度や平坦度を得るために多少
の変形を与えて矯正するか、表面状態をしあげるか、冷
間で鍛造、圧延、引抜等により目的とする部品を製造す
る。表１は本発明の幾種の合金の化学成分例である。そ
して表２は各種合金の加工熱処理した例であって、厚さ
７０mmの鋳塊を均質化処理を経た後、（１）８５０℃で
１０mm厚さまで熱間圧延して鋳造組織を無くし、（２）
９５０で１時間維持した後水冷することによって溶体化
処理したものを、（3)1.5 mm厚さまで８５％冷間圧延し
た後、（４）４２５−５５０℃で３時間維持した後、水
冷させて時効硬化熱処理した材料の特性である。(5) Straightening, Raising and Manufacturing of Parts Plates, rods, lines, etc., are given a slight amount of deformation in order to obtain straightness and flatness, and are then straightened or coldened. The desired parts are manufactured by forging, rolling, drawing, etc. Table 1 is an example of the chemical composition of some alloys of the present invention. Table 2 shows examples of thermomechanical processing of various alloys. After ingots having a thickness of 70 mm were homogenized, (1) hot rolling was performed at 850 ° C to a thickness of 10 mm to eliminate the cast structure, )
The solution treated by maintaining at 950 for 1 hour and then water cooling was (3) 85% cold rolled to a thickness of 1.5 mm, then (4) maintained at 425-550 ° C for 3 hours, and then water cooled. It is a characteristic of the material that has been subjected to age hardening heat treatment.
【００１３】表２で見ると、Ｃｕ−Ｃｒ系にミシュメタ
ル（Ｍｉｓｃｈｍｅｔａｌ）としてセリューム（Ｃｅ）
及びランタン（Ｌａ）の成分を添加した場合は既存のＣ
ｕ−Ｃｒ系合金に比して５００℃以上の高温で過時効果
が抑制される安定性がある。そして添加元素の総重量比
においてもＣｕ−Ｃｒ−ＭＳ系合金の場合、クローム
（Ｃｒ）とミシュメタル（ＭＳ）成分の合せが0.6 ％
（重量百分率）以下になっても満足すべき特性を発揮す
るので、他の合金たちと比較して有利な点が多い。As shown in Table 2, in the Cu-Cr system, as mischmetal (Mischmetal), cerium (Ce) is used.
When the lanthanum (La) component is added, the existing C
Compared to u-Cr alloys, there is stability that the transient effect is suppressed at high temperatures of 500 ° C or higher. Also in the total weight ratio of the additive elements, in the case of the Cu-Cr-MS alloy, the combination of chromium (Cr) and mischmetal (MS) components is 0.6%.
Even if it is less than (weight percentage), satisfactory properties are exhibited, and there are many advantages compared with other alloys.
【００１４】一方、基地中に分布された時効析出物や固
溶されない遊離クローム（Ｃｒ）の場合もＣｕ−Ｃｒ−
ＭＳ系の合金がより均一で微細であることを見せ材質の
均質性面でも優秀である。On the other hand, in the case of aging precipitates distributed in the matrix and free chromium (Cr) which is not solid-dissolved, Cu-Cr-
The MS-based alloy shows that it is more uniform and fine, and is excellent in terms of material homogeneity.
【００１５】[0015]
【表１】 [Table 1]
【００１６】[0016]
【表２】 [Table 2]
Claims (6)
％−0.50％（重量百分率）、（２） ニオディミューム
（Ｎｄ）＋プラセオディミューム（Ｐｒ）：0.10％（重
量百分率）まで、（３） クローム（Ｃｒ）：0.20−1.
50％（重量百分率）、（４） 銅（Ｃｕ）＋銀（Ａ
ｇ）：残りで組成されたことを特徴とする銅−クローム
−セリューム−ランタン合金。1. The alloy composition is: (1) Ceruleum (Ce) + lanthanum (La): 0.05
% -0.50% (percentage by weight), (2) Niodimume (Nd) + praseodymume (Pr): up to 0.10% (percentage by weight), (3) Chrome (Cr): 0.20-1.
50% (weight percentage), (4) copper (Cu) + silver (A
g): Copper-chrome-cerium-lanthanum alloy characterized by the composition of the balance.
足させるために、各々の元素を添加するか、またはミシ
ュメタル（Ｍｉｓｃｈｍｅｔａｌ）の0.05％−0.50％
（重量百分率）を添加したことを特徴とする請求項１記
載の銅−クローム−セリューム−ランタン合金。2. In order to satisfy the alloy components of the above (1) and (2), each element is added, or 0.05% -0.50% of mischmetal.
The copper-chromium-cerium-lanthanum alloy according to claim 1, wherein (weight percentage) is added.
うな加工熱処理工程： （１）熱間加工→（２）溶体化処理→（３）冷間加工→
（４）時効硬化熱処理→（５）矯正、しあげ、及び部品
製造をすることを特徴とする銅−クローム−セリューム
−ランタン合金製造方法。3. A thermomechanical treatment step comprising the alloy component according to claim 1, as follows: (1) hot working → (2) solution heat treatment → (3) cold working →
(4) Age hardening heat treatment → (5) A method for producing a copper-chromium-cerium-lanthanum alloy, which comprises straightening, lifting, and producing parts.
うな加工熱処理工程： （１）熱間加工→（２）溶体化処理→（４）時効硬化熱
処理→（３）冷間加工→（５）矯正、しあげ、及び部品
製造をすることを特徴とする銅−クローム−セリューム
−ランタン合金製造方法。4. A thermomechanical treatment step comprising the alloy component according to claim 1, as follows: (1) hot working → (2) solution heat treatment → (4) age hardening heat treatment → (3) cold working → (5) A method for producing a copper-chrome-cerium-lanthanum alloy, which comprises straightening, lifting, and producing parts.
うな加工熱処理工程： （１）熱間加工→（２）溶体化処理→（４）時効硬化熱
処理→（５）矯正、しあげ、及び部品製造をすることを
特徴とする銅−クローム−セリューム−ランタン合金製
造方法。5. A thermomechanical treatment step comprising the alloy component according to claim 1, as follows: (1) hot working → (2) solution heat treatment → (4) age hardening heat treatment → (5) straightening, And a method for producing a copper-chrome-cerium-lanthanum alloy, which comprises:
造組織を除去できる加工比で鍛造、圧延、圧出等を行
い、（２）溶体化処理は８００−１０５０℃で３０分以
上維持した後に水冷、油冷等で急冷し、（３）冷間加工
は常温で圧延、鍛造、引抜等によって、（４）時効硬化
熱処理は４００−５５０℃で１時間以上維持した後水
冷、油冷、空冷等によって、（５）矯正、しあげ、及び
部品製造においては直線度や平坦度を得るために多少の
変形を与えて矯正するか、表面状態をしあげるか、冷間
で鍛造、圧延、引抜等により目的する部品を完成するこ
とを特徴とする請求項３乃至５のうちいずれか一項記載
の銅−クローム−セリューム−ランタン合金製造方法。6. (1) Hot working includes forging, rolling and extrusion at a working ratio capable of removing a cast structure at 800-950 ° C., and (2) solution treatment is at 800-1050 ° C. for 30 minutes or more. After maintaining, quenching with water cooling, oil cooling, etc., (3) cold working by rolling, forging, drawing at room temperature, (4) age hardening heat treatment at 400-550 ° C for 1 hour or more, then water cooling, oil cooling By (5) straightening, raising, and part manufacturing, straightening and flattening by straightening or flattening by cold or air cooling, or by straightening or raising the surface condition, or cold forging, The method for producing a copper-chrome-cerium-lanthanum alloy according to any one of claims 3 to 5, characterized in that a desired part is completed by rolling, drawing or the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7008334A JP2744207B2 (en) | 1995-01-23 | 1995-01-23 | Copper (Cu) -chrome (Cr) -cerium (Ce) -lanthanum (La) alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7008334A JP2744207B2 (en) | 1995-01-23 | 1995-01-23 | Copper (Cu) -chrome (Cr) -cerium (Ce) -lanthanum (La) alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08199263A true JPH08199263A (en) | 1996-08-06 |
| JP2744207B2 JP2744207B2 (en) | 1998-04-28 |
Family
ID=11690300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7008334A Expired - Fee Related JP2744207B2 (en) | 1995-01-23 | 1995-01-23 | Copper (Cu) -chrome (Cr) -cerium (Ce) -lanthanum (La) alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2744207B2 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5120010A (en) * | 1974-08-12 | 1976-02-17 | Masahiko Izumi | NETSUKOKANKIOSONAETA KINZOKUZAIRYOSHODONROSOCHINO KUMIAWASESOCHI |
| JPS571580A (en) * | 1980-06-06 | 1982-01-06 | Hitachi Ltd | Plasma cutting torch |
| JPH02217190A (en) * | 1989-02-16 | 1990-08-29 | Sumitomo Metal Ind Ltd | Electrode for electric resistance welding |
| JPH04198460A (en) * | 1990-11-28 | 1992-07-17 | Chuetsu Gokin Chuko Kk | Production of casting mold member for continuous casting |
-
1995
- 1995-01-23 JP JP7008334A patent/JP2744207B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5120010A (en) * | 1974-08-12 | 1976-02-17 | Masahiko Izumi | NETSUKOKANKIOSONAETA KINZOKUZAIRYOSHODONROSOCHINO KUMIAWASESOCHI |
| JPS571580A (en) * | 1980-06-06 | 1982-01-06 | Hitachi Ltd | Plasma cutting torch |
| JPH02217190A (en) * | 1989-02-16 | 1990-08-29 | Sumitomo Metal Ind Ltd | Electrode for electric resistance welding |
| JPH04198460A (en) * | 1990-11-28 | 1992-07-17 | Chuetsu Gokin Chuko Kk | Production of casting mold member for continuous casting |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2744207B2 (en) | 1998-04-28 |
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