JPS62174356A - Manufacture of small-diameter cast bar of al-mg-si delayed age-hardening aluminum alloy for forging - Google Patents
Manufacture of small-diameter cast bar of al-mg-si delayed age-hardening aluminum alloy for forgingInfo
- Publication number
- JPS62174356A JPS62174356A JP1330686A JP1330686A JPS62174356A JP S62174356 A JPS62174356 A JP S62174356A JP 1330686 A JP1330686 A JP 1330686A JP 1330686 A JP1330686 A JP 1330686A JP S62174356 A JPS62174356 A JP S62174356A
- Authority
- JP
- Japan
- Prior art keywords
- forging
- aluminum alloy
- content
- small
- less
- 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.)
- Pending
Links
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 23
- 238000005242 forging Methods 0.000 title claims description 14
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 238000003483 aging Methods 0.000 title description 9
- 230000003111 delayed effect Effects 0.000 title description 2
- 238000005266 casting Methods 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 230000032683 aging Effects 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 2
- 229910052726 zirconium Inorganic materials 0.000 claims description 2
- 229910019064 Mg-Si Inorganic materials 0.000 claims 1
- 229910019406 Mg—Si Inorganic materials 0.000 claims 1
- 238000010273 cold forging Methods 0.000 abstract description 7
- 229910052802 copper Inorganic materials 0.000 abstract description 5
- 238000002791 soaking Methods 0.000 abstract description 3
- 229910052718 tin Inorganic materials 0.000 abstract description 3
- 238000011282 treatment Methods 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract 1
- 238000010791 quenching Methods 0.000 description 11
- 230000000171 quenching effect Effects 0.000 description 11
- 230000000694 effects Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000005496 tempering Methods 0.000 description 4
- 239000000956 alloy Substances 0.000 description 3
- 230000001771 impaired effect Effects 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 229910000765 intermetallic Inorganic materials 0.000 description 2
- 229910021365 Al-Mg-Si alloy Inorganic materials 0.000 description 1
- 229910019752 Mg2Si Inorganic materials 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000007542 hardness measurement Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
Landscapes
- Forging (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野１
本発明はＡｌ−Ｍｇ−８ｉ系遅時効硬化型鍛造泪アルミ
ニウム合金小径鋳造棒の製造法に関し、さらに詳しくは
、遅時効硬化冷間鍛造用素材としてソーキングおよび焼
入処理を省略することができるＡｔ Ｍｇ Ｓｉ系
遅遅時効硬化型鍛造用アルミニウム合金小径鋳造棒製造
法に関する。[Detailed Description of the Invention] [Industrial Application Field 1] The present invention relates to a method for manufacturing an Al-Mg-8i-based slow-age hardening type forged aluminum alloy small-diameter cast rod, and more specifically, to a method for producing a small-diameter cast rod for slow-aging hardening forged aluminum alloy. The present invention relates to a method for producing a small-diameter cast rod of an AtMgSi-based slow age hardening aluminum alloy for forging, which can omit soaking and quenching treatments for the raw material.
［従来技術１
最近、アルミニウム合金の冷間鍛造材の使用が増加して
きているが、Ａｌ−Ｍｇ Ｓｉ系合金、例えば、Ｍｇ
０．４５−０．８ｗｔ％、Ｓｉ ０．６〜１．２ｕ＋Ｌ
％含有の６１５１合金は変形抵抗が小さく、冷間鍛造性
がよいのでＣｕ ３．５〜５．Ｏｕ＋ｔ％含有のＡｌ−
Ｃｕ系合金に代わりつつあるのが現状である。[Prior art 1] Recently, the use of cold forged aluminum alloy materials has been increasing, but aluminum alloys such as Al-Mg Si alloys, such as Mg
0.45-0.8wt%, Si 0.6-1.2u+L
The 6151 alloy containing 3.5 to 5% Cu has low deformation resistance and good cold forgeability. Al− containing O+t%
Currently, it is being replaced by Cu-based alloys.
しかして、アルミニウム合金の鍛造用素材として、冷間
鍛造時の変形抵抗を下げるために０材を使用し、冷間鍛
造後に焼入れ、焼戻しの熱処理を行なうことによって強
度を向上させてから実用に供されていた。Therefore, as a material for forging aluminum alloys, zero material is used to reduce the deformation resistance during cold forging, and after cold forging, heat treatment of quenching and tempering is performed to improve the strength before it is put into practical use. It had been.
しかし、この場合には下記に示す問題点がある。However, this case has the following problems.
１）バーニング等の品質異常が発生し易い。1) Quality abnormalities such as burning are likely to occur.
２）薄物では焼入歪が発生し易い。2) Hardening distortion is likely to occur in thin products.
３）焼入設備が必要となる。3) Hardening equipment is required.
［発明が解決しようとする問題点１
本発明は上記に説明したような従来におけるアルミニウ
ム合金の冷間鍛造材の問題点に鑑みなされたもので、本
発明者は研究を重ねた結果、アルミニウム合金の鍛造用
素材として初めから焼入れした素材を使用し、かつ、焼
入れ後常温時効を遅滞させた素材と腰鍛造に際して冷間
鍛造後に焼戻しを行なってから実用に供すれば、このよ
うな問題はなくなることを見出した。[Problem to be Solved by the Invention 1] The present invention was made in view of the problems of conventional cold forged aluminum alloys as explained above, and as a result of repeated research, the present inventor has If we use a material that has been quenched from the beginning as the forging material, and if we use a material whose aging at room temperature is delayed after quenching, we can temper it after cold forging when we use it for waist forging, and then put it into practical use, this problem will disappear. I discovered that.
本発明者はこのような知見に基き、常温において１〜６
箇月の遅時効硬化性を有し、さらに、冷間鍛造後の焼戻
しによりＨｖ１００以上の高硬度が得られるＡＩ Ｍ
ｇ Ｓｉ系遅遅時効硬化型鍛造用アルミニウム合金小径
鋳造棒製造法を開発したのである。Based on this knowledge, the present inventor has determined that 1 to 6
AI M has slow age hardenability of several months, and can obtain high hardness of Hv100 or more by tempering after cold forging.
We developed a method for producing small-diameter cast rods of aluminum alloys for g-Si-based slow age-hardening forging.
Ｅ問題点を解決するための手段１
本発明に係るＡＩ Ｍｇ Ｓｉ系遅遅時効硬化型鍛
造用アルミニウム合金小径鋳造棒製造法の特徴とすると
ころは、
Ｍｇ０．３〜０．８Ｉｌｌｔ％、Ｓｉ０．４０〜１．５
Ｉｌｌｔ％、Ｓｎ ０．０１〜１．Ｏｕ＋ｔ％、Ｃｕ
０．０５〜１．Ｏｕ＋Ｌ％、Ｔｉ ０．，００１〜０．
１０ｗｔ％、Ｂ ０．０００１〜０．０１１１１Ｌ％を
含有し、かつ、Ｓｉ含有量をＭｇ含有量より多くし、さ
らに、
Ｍｎ １，０ＩＩｌｔ％以下、Ｃｒ ０．３０ｗＬ％以
下、Ｚｒ ０．３０ｗｔ％以下
のうちから選んだ１種或いは２種以上
を含有し、残部Ａｌおよび不可避不純物よりなるアルミ
ニウム合金を、鋳造持５５０°Ｃの温度から常温までの
冷却速度を１００’Ｃ／分以上としたことにある。Means for Solving Problem E 1 The characteristics of the AI Mg Si-based slow age hardening aluminum alloy small diameter cast rod manufacturing method for forging according to the present invention are as follows: Mg0.3-0.8llt%, Si0.40 ~1.5
Illt%, Sn 0.01-1. Ou+t%, Cu
0.05-1. Ou+L%, Ti 0. ,001~0.
10wt%, B 0.0001 to 0.01111L%, and the Si content is greater than the Mg content, and furthermore, Mn is 1,0IIlt% or less, Cr is 0.30wL% or less, and Zr is 0.30wt%. An aluminum alloy containing one or more selected from the following, with the remainder being Al and unavoidable impurities, with a cooling rate of 100'C/min or more from a casting temperature of 550°C to room temperature. It is in.
本発明に係るＡＩ Ｍｇ Ｓｉ系遅時効硬化型鍛造
用アルミニウム合金小径鋳造棒の製造法（以下単に本発
明に係る製造法ということがある。）について詳細に説
明する。The method for manufacturing an AI Mg Si-based slow age hardening aluminum alloy small diameter cast rod for forging according to the present invention (hereinafter sometimes simply referred to as the manufacturing method according to the present invention) will be described in detail.
先ず、本発明に係る製造法において使用するアルミニウ
ム合金の含有成分および成分割合について説明する。First, the components and component ratios of the aluminum alloy used in the manufacturing method according to the present invention will be explained.
Ｎ旬は硬化元素であり、ＳｉとＭｇ２Ｓｉを形成して強
度を向上させ、一方焼入感受性を鋭敏にする元素であり
、含有量が０．３ｗｔ％未満では強度向上の効果が少な
く、また、０．＆ｕｔ％を越えて含有されると焼入感受
性、冷間鍛造性を阻害し、かつ、Ｓｎと結合して遅時効
硬化性を阻害する。よって、Ｍｇ含有量は０．３〜０．
８ｗｔ％とする。Nitrogen is a hardening element that improves strength by forming Si and Mg2Si, while increasing quenching sensitivity. If the content is less than 0.3 wt%, the effect of improving strength is small; 0. If the content exceeds &ut%, it will inhibit quenching sensitivity and cold forgeability, and will also combine with Sn to inhibit slow age hardenability. Therefore, the Mg content is 0.3 to 0.
It is set to 8wt%.
ＳｉはＭｇと同様に硬化元素であり、Ｍｇ２５ｉを形成
して強度を向上させる元素であり、含有量が０．４０ｕ
＋ｔ％未満では強度向上の効果がなく、また、１．５ｗ
ｔ％を越えて含有されると冷間鍛造性を阻害する。よっ
て、Ｓｉ含有量は０．４０〜１．５…Ｌ％とする。Si is a hardening element like Mg, and is an element that improves strength by forming Mg25i, and the content is 0.40u.
If it is less than +t%, there is no effect of improving strength, and 1.5w
If the content exceeds t%, cold forgeability will be inhibited. Therefore, the Si content is set to 0.40 to 1.5...L%.
Ｓｎは遅時効硬化性を付与するための重要な元素であり
、含有量が０．０１…Ｌ％未満では遅時効硬化性が充分
ではなく、また、１．Ｏｕ＋ｔ％を越えて含有されると
靭性を害するようになって冷間鍛造性を阻害する。よっ
て、Ｓｎ含有量は０．０１〜１，０ｗｔ％とする。Sn is an important element for imparting slow age hardenability, and if the content is less than 0.01...L%, the slow age hardenability is insufficient. If the content exceeds O+t%, the toughness will be impaired and cold forgeability will be inhibited. Therefore, the Sn content is set to 0.01 to 1.0 wt%.
ＣＬＩは強度向上に役立つ元素であり、含有量が０．０
５ｗｔ％未満ではこのような効果はなく、１．Ｏｕ＋Ｌ
％を越える含有量では冷間鍛造性を害する。よって、Ｃ
ｕ含有量は０．０５〜１．ＯＬＩ＋Ｌ％とする。CLI is an element that helps improve strength, and the content is 0.0
There is no such effect when the amount is less than 5 wt%, and 1. Ou+L
If the content exceeds %, cold forgeability will be impaired. Therefore, C
The u content is 0.05 to 1. Let OLI+L%.
Ｔｉ、Ｂは鋳造組織を微細化し、冷間鍛造性を向上させ
るが、一方焼入感受性をやや悪くする元素であり、含有
量がＴｉ ０．００１ｗｔ％未満、Ｂ ０００００１ｗ
ｔ％未満では微細化効果がなく、また、Ｔｉ０．１０ｗ
ｔ％、および、Ｂ ０．０１ｗｔ％を越える含有量では
夫々Ａｌと巨大な金属間化合物を生成して冷間鍛造性を
害する。よって、Ｔｉ含有量は０．００１〜０，１０ｗ
Ｌ％、Ｂ含有量は０．０００１−０．０１ｕ＋ｔ％以下
とする。 上記説明したＭｇ含有量とＳｉ含有量との関
係は、ｓｉ＞Ｍｇとしなければ、遅時効硬化性が発揮で
きなくなる。よって、Ｓｉ含有量をＭｇ含有量より多く
する。Ti and B refine the casting structure and improve cold forgeability, but on the other hand, they are elements that slightly worsen quenching sensitivity, and the content is less than 0.001wt% for Ti and 000001w for B.
If it is less than t%, there is no refining effect, and if Ti0.10w
If the B content exceeds 0.01 wt% or 0.01 wt%, a huge intermetallic compound is formed with Al, impairing cold forgeability. Therefore, the Ti content is 0.001~0.10w
L% and B content shall be 0.0001-0.01u+t% or less. Regarding the relationship between the Mg content and the Si content as explained above, unless si>Mg, slow age hardening properties cannot be exhibited. Therefore, the Si content is made larger than the Mg content.
Ｍｎは強度を付与する元素であり、含有量が１．０１ｌ
ｌｔ％を越えると冷間鍛造性を害するようになる。よっ
て、Ｍｎ含有量は１．ＯｗＬ％以下とする。Mn is an element that imparts strength, and the content is 1.01L
If it exceeds lt%, cold forgeability will be impaired. Therefore, the Mn content is 1. OwL% or less.
Ｃｒ、Ｚｒは共に強度を向上させる元素であり、含有量
が夫々０，３０ｕｔ％を越えるとＡｌと巨大金属間化合
物を生成し、冷間鍛造性を阻害するようになる。よって
、Ｃｒ含有量、Ｚｒ含有量は０．３０ｕ＋ｔ％以下とす
る。Both Cr and Zr are elements that improve strength, and if their content exceeds 0.30 ut%, they form a giant intermetallic compound with Al, which impairs cold forgeability. Therefore, the Cr content and Zr content are set to 0.30u+t% or less.
次に、本発明に係る製造法における５５０°Ｃの温度か
ら常温までの焼入速度について説明する。Next, the quenching rate from a temperature of 550°C to room temperature in the manufacturing method according to the present invention will be explained.
焼入速度は速い程高い強度が得られるものであり、即ち
、１００℃／分未満の焼入速度では冷間鍛造後の焼戻し
により高い強度が得られなくなる。The faster the quenching rate, the higher the strength. That is, if the quenching rate is less than 100° C./min, high strength cannot be obtained due to tempering after cold forging.
よって、焼入速度は１００℃／分以上とすることにより
目標を満足する強度が得られる。Therefore, by setting the quenching rate to 100° C./min or more, a strength that satisfies the target can be obtained.
［実施例１
本発明に係るＡＩ Ｍｇ Ｓｉ系遅遅時効硬化型鍛
造用アルミニウム合金小径鋳造棒製造法の実施例を説明
し、併せて比較例を説明する。[Example 1] An example of the method for manufacturing an AI Mg Si-based slow age hardening aluminum alloy small diameter cast rod for forging according to the present invention will be described, and a comparative example will also be described.
実施例
第１表に示す含有成分および成分割合のアルミニウム合
金を常法に従って溶解鋳造し、３０φの小径連続鋳造棒
および２５５ｍｍφ連続鋳造塊とした。次いで、３０φ
小径連続鋳造捧については、厚さ２ｍｍの皮むきをした
後、また、２５５φ連続鋳造塊については３０φ小径連
続鋳造棒の場合の寸法を合せて切出後、硬度測定による
遅時効硬化性、５０％冷間鍛造性および冷間鍛造後のＴ
８硬度を測定した。EXAMPLES Aluminum alloys having the components and proportions shown in Table 1 were melted and cast according to a conventional method to form small diameter continuously cast rods of 30 φ and continuously cast ingots of 255 mm φ. Next, 30φ
For small-diameter continuously cast rods, after peeling to a thickness of 2 mm, and for 255φ continuous cast ingots, after cutting them according to the dimensions of a 30φ small-diameter continuously cast rod, slow aging hardenability by hardness measurement, 50 % cold forgeability and T after cold forging
8 hardness was measured.
その結果を第２表に示す。The results are shown in Table 2.
この第２表から、本発明に係る製造法によるアルミニウ
ム合金の３０φ小径連続鋳造棒は遅時効硬化を有し、冷
開鍛造性も良好で、かつ、冷開鍛造後の焼戻し後の硬度
ら）（ｖｌｏＯ以上あり、製品硬度として満足するもの
であり、比較例に比し優れていることがわかる。From this Table 2, it can be seen that the 30φ small-diameter continuously cast bar of aluminum alloy produced by the manufacturing method according to the present invention has slow aging hardening, good cold-open forging properties, and hardness after tempering after cold-open forging. (It is clear that the product hardness is more than vloO, which is satisfactory as a product hardness, and is superior to the comparative example.
［発明の効果１
以上説明したように、本発明に係るＡｌ−Ｍｇ−８ｉ系
遅時効硬化型鍛造用アルミニウム合金小径鋳造棒の製造
法は上記の構成であるから、製造されたアルミニウム合
金は冷間鍛造素材としてソーキングおよび焼入を省略す
ることができるという効果を有している。[Effect of the invention 1 As explained above, since the method for manufacturing the Al-Mg-8i-based slow-age hardening aluminum alloy small-diameter cast rod for forging according to the present invention has the above configuration, the manufactured aluminum alloy is cooled. It has the effect that soaking and quenching can be omitted as an intermediate forging material.
Claims (1)
％、Ｓｎ０．０１〜１．０ｗｔ％、Ｃｕ０．０５〜１．
０ｗｔ％、Ｔｉ０．００１〜０．１０ｗｔ％、Ｂ０．０
００１〜０．０１ｗｔ％を含有し、かつ、Ｓｉ含有量を
Ｍｇ含有量より多くし、さらに、 Ｍｎ１．０ｗｔ％以下、Ｃｒ０．３０ｗｔ％以下、Ｚｒ
０．３０ｗｔ％以下 のうちから選んだ１種或いは２種以上 を含有し、残部Ａｌおよび不可避不純物よりなるアルミ
ニウム合金を、鋳造時５５０℃の温度から常温までの冷
却速度を１００℃／分以上としたことを特徴とするＡｌ
−Ｍｇ−Ｓｉ系遅時効硬化型鍛造用アルミニウム合金小
径鋳造棒の製造法。[Claims] Mg0.3-0.8wt%, Si0.40-1.5wt%
%, Sn0.01-1.0wt%, Cu0.05-1.
0wt%, Ti0.001-0.10wt%, B0.0
001 to 0.01 wt%, and the Si content is greater than the Mg content, and furthermore, Mn is 1.0 wt% or less, Cr is 0.30 wt% or less, Zr
An aluminum alloy containing one or more selected from 0.30wt% or less, with the remainder being Al and unavoidable impurities, is cooled at a cooling rate of 100°C/min or more from a temperature of 550°C during casting to room temperature. Al characterized by
- A method for producing a small-diameter cast aluminum alloy rod for slow aging hardening of Mg-Si type forging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1330686A JPS62174356A (en) | 1986-01-24 | 1986-01-24 | Manufacture of small-diameter cast bar of al-mg-si delayed age-hardening aluminum alloy for forging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1330686A JPS62174356A (en) | 1986-01-24 | 1986-01-24 | Manufacture of small-diameter cast bar of al-mg-si delayed age-hardening aluminum alloy for forging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62174356A true JPS62174356A (en) | 1987-07-31 |
Family
ID=11829496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1330686A Pending JPS62174356A (en) | 1986-01-24 | 1986-01-24 | Manufacture of small-diameter cast bar of al-mg-si delayed age-hardening aluminum alloy for forging |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62174356A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6113850A (en) * | 1993-03-22 | 2000-09-05 | Aluminum Company Of America | 2XXX series aluminum alloy |
| EP2489755A4 (en) * | 2009-10-16 | 2015-11-11 | Showa Denko Kk | Process for producing brake piston |
-
1986
- 1986-01-24 JP JP1330686A patent/JPS62174356A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6113850A (en) * | 1993-03-22 | 2000-09-05 | Aluminum Company Of America | 2XXX series aluminum alloy |
| EP2489755A4 (en) * | 2009-10-16 | 2015-11-11 | Showa Denko Kk | Process for producing brake piston |
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