JPS63199834A - Manufacture of al-si-base alloy - Google Patents
Manufacture of al-si-base alloyInfo
- Publication number
- JPS63199834A JPS63199834A JP2979487A JP2979487A JPS63199834A JP S63199834 A JPS63199834 A JP S63199834A JP 2979487 A JP2979487 A JP 2979487A JP 2979487 A JP2979487 A JP 2979487A JP S63199834 A JPS63199834 A JP S63199834A
- Authority
- JP
- Japan
- Prior art keywords
- alloy
- rare earth
- gas
- pinholes
- added
- 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
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 38
- 239000000956 alloy Substances 0.000 title claims abstract description 38
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 229910052751 metal Inorganic materials 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 16
- 229910018125 Al-Si Inorganic materials 0.000 claims description 5
- 229910018520 Al—Si Inorganic materials 0.000 claims description 5
- 229910052761 rare earth metal Inorganic materials 0.000 abstract description 20
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 12
- 239000007789 gas Substances 0.000 abstract description 9
- 238000005266 casting Methods 0.000 abstract description 6
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 6
- 239000001257 hydrogen Substances 0.000 abstract description 6
- 150000002910 rare earth metals Chemical class 0.000 abstract description 6
- 230000005496 eutectics Effects 0.000 abstract description 3
- 230000007062 hydrolysis Effects 0.000 abstract description 2
- 238000006460 hydrolysis reaction Methods 0.000 abstract description 2
- 229910021364 Al-Si alloy Inorganic materials 0.000 abstract 8
- 230000007547 defect Effects 0.000 abstract 2
- 238000010521 absorption reaction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 229910000861 Mg alloy Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910018523 Al—S Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 235000015429 Mirabilis expansa Nutrition 0.000 description 1
- 244000294411 Mirabilis expansa Species 0.000 description 1
- 229910000676 Si alloy Inorganic materials 0.000 description 1
- 229910007981 Si-Mg Inorganic materials 0.000 description 1
- 229910000551 Silumin Inorganic materials 0.000 description 1
- 229910008316 Si—Mg Inorganic materials 0.000 description 1
- 229910001278 Sr alloy Inorganic materials 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000004868 gas analysis Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 150000002483 hydrogen compounds Chemical class 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 235000013536 miso Nutrition 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はＡｌ−Ｓｉ基合金の製造方法に関し、特にピン
ホールの極めて少ない健全なＡｊ２−Ｓｉ基合金鋳物を
ＳｒおよびＲＥＭをともに含有させることにより、有利
に製造する方法について提案する。Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a method for producing an Al-Si-based alloy, and in particular to a method for manufacturing an Al-Si-based alloy, in particular a method for producing a sound Aj2-Si-based alloy casting with extremely few pinholes containing both Sr and REM. Accordingly, an advantageous manufacturing method is proposed.
（従来の技術）
従来、Ａ６−Ｓｉ基合金、一般にシルミンと称されるＡ
ｌ基合金は、金属ＮａまたはＮａＦを含有するフラック
スを添加する方法により、機械的性質の改善を図ってい
る。また最近では、前記シルミンの共晶Ｓｔの組織改良
として、Ｎａに代わってＳｒが用いられるようになって
きた。このＳｒをシルミンに添加すると、機械的性質、
特に伸びの改善が著しいという特色がある。(Prior art) Conventionally, A6-Si-based alloy, A6-Si-based alloy, generally called silumin, has been used.
The mechanical properties of l-based alloys are improved by adding flux containing metal Na or NaF. Recently, Sr has been used instead of Na to improve the structure of the eutectic St of sirmin. When this Sr is added to sirumin, mechanical properties,
In particular, it is characterized by a remarkable improvement in elongation.
（発明が解決しようとする問題点）
組織改良剤としての前記Ｓｒをシルミンに添加した合金
の場合、鋳型に鋳込む際に溶湯を長時間保持すると、鋳
造した製品にピンホールが現れる問題点があった。ピン
ホール発生の原因は明らかでなく、その解決が要望され
ていたが、適切な方法は知られていなかった。(Problems to be Solved by the Invention) In the case of an alloy in which Sr as a structure improver is added to silmin, there is a problem that pinholes appear in the cast product when the molten metal is held for a long time when being poured into a mold. there were. The cause of pinholes is not clear, and a solution has been desired, but no suitable method was known.
（問題点を解決するための手段）
本発明は、従来技術の有する前記諸問題点を除去・改善
することを目的とするものであり、特許請求の範囲記載
の製造方法を提供することによって前記目的を達成する
ことができる。(Means for Solving the Problems) The present invention aims to eliminate and improve the above-mentioned problems of the prior art, and by providing the manufacturing method described in the claims. Able to achieve purpose.
すなわち、本発明は、Ｓｒを０．００１〜０．３０重量
％含有するＡ＃−Ｓｉ基合金溶湯中にＡｆｆｉ−ＲＥＭ
系合金を添加し、該Ａ１−Ｓｉ基合金溶湯中に０．０１
０〜０．０４５重量％残留させることを特徴とするＡｌ
ｌ−Ｓｉ基合金の製造方法
に関するものである。That is, the present invention provides Affi-REM in a molten A#-Si-based alloy containing 0.001 to 0.30% by weight of Sr.
0.01 to the molten A1-Si-based alloy.
Al characterized by remaining 0 to 0.045% by weight
The present invention relates to a method for producing an l-Si-based alloy.
（作用）
Ａｌ−Ｓｔ基合金にＳｒを添加すると、共晶Ｓｉが微細
化され特に伸びの増加が著しく、機械的性質を向上させ
る。ここで、Ｓｒをシルミンに添加する場合、鋳型に鋳
込む際に溶湯を長時間保持すると鋳造した製品にピンホ
ールが現れる理由としては、添加したＳｒが溶湯を長時
間保持中に大気中の水分を加水分解しＡＪ中に水素ガス
が吸収さ−れ、その吸収された水素ガスが凝固によって
放出されることによるものと考えられる。(Function) When Sr is added to an Al-St based alloy, the eutectic Si becomes finer and the elongation in particular increases significantly, improving the mechanical properties. When Sr is added to SILMIN, pinholes appear in the cast product when the molten metal is held for a long time when it is poured into a mold. This is thought to be due to the fact that hydrogen gas is absorbed into AJ by hydrolysis, and the absorbed hydrogen gas is released by solidification.
・ そこで発明者らは、水素との親和力が強く、水素化
合物を作り易いＲＥＭをミソシュメタル母合金の形でＡ
ｌ −Ｓｉ −３ｔ基合金に添加する方法を考え、水素
ガスと共にＡｌｌ −ＲＥＭ系合金を添加してＡＪ −
３ｔ−３ｔ基合金のピンホール増加を防止できないかを
実験した。なお、本発明に用いるＡＩ−ＲＥＭ系合金は
、Ａｌｌと金属Ｌａ、ミツシュメタル等の希土類合金と
を合金にしたものである。・Therefore, the inventors developed REM, which has a strong affinity for hydrogen and is easy to create hydrogen compounds, in the form of a Misos metal master alloy.
Considering the method of adding All-Si-3t based alloy, we added All-REM alloy along with hydrogen gas to create AJ-
An experiment was conducted to see if it was possible to prevent the increase in pinholes in 3t-3t based alloys. The AI-REM alloy used in the present invention is an alloy of All and a rare earth alloy such as La metal or Mitsushi metal.
本発明において、０．００１〜０．３０重量％のＳｒを
含有するＡｌｌ−Ｓｉ基合金を用いる理由は、Ｓｒ含有
量が０．３０重貴簡以上ではＳｒ添加量が過剰となり機
械的性質が劣化するためであり、０．００１重景貴簡下
では改良効果がなく、また、水素の吸収もないためであ
る。In the present invention, the reason why an All-Si base alloy containing 0.001 to 0.30% by weight of Sr is used is that if the Sr content is 0.30% by weight or more, the amount of Sr added will be excessive and the mechanical properties will deteriorate. This is because it deteriorates, and there is no improvement effect under 0.001 Chungkei Kikan, and there is no absorption of hydrogen.
また、ＲＥＭを前記Ａｌ−Ｓｉ基合金中に０．０１０〜
０．０４５重量％残留させる理由は、０．０４５重景貴
簡上では金属間化合物が生成し機械的性質が劣化し、ま
た０、０１０重景貴簡下ではピンホール防止に効果がな
いためである。Further, REM is added in the Al-Si based alloy from 0.010 to
The reason why it remains at 0.045% by weight is that with 0.045 Chongkei Guikan, intermetallic compounds are formed and the mechanical properties deteriorate, and with 0.010 Chungkei Guikan, it is not effective in preventing pinholes. It is.
（実施例）
Ａｌｌ−３ｔ−Ｍｇ合金（ＡＣ４Ｃ）を＃５０黒鉛るつ
ぼを用いて電気炉で溶解した後、７２０℃に保持し、吸
水イソライトを溶湯中に装入し、水の分解で発生する水
素により前記Ａ１−Ｓｉ −Ｍｇ合金、水素含有量１．
０ｃｃ／ １００ ｇ （７２０℃における飽和量）の
合金を溶製した。この溶湯をガス吸収量測定のための鋳
型（金型、シェル型）に鋳造した。(Example) After melting All-3t-Mg alloy (AC4C) in an electric furnace using a #50 graphite crucible, the temperature was maintained at 720°C, and water-absorbing isolite was charged into the molten metal to melt the melt generated by water decomposition. Hydrogen causes the A1-Si-Mg alloy to have a hydrogen content of 1.
0 cc/100 g (saturation amount at 720°C) of the alloy was melted. This molten metal was cast into a mold (metal mold, shell mold) for gas absorption measurement.
次いでこの溶湯を量分し、一方を７５０℃に保持してＡ
［−１８％Ｓ １−１０％Ｓｒ合金を添加し、Ａｌ−Ｓ
ｉＡｌ−Ｓｉ−合金溶湯を準備した。この溶湯を７２０
℃に保持し、再び吸水イソライトを溶湯中に装入し、水
素ガスを約１．０ｃｃ／１００ ｇ （７２０℃におけ
る飽和量）を含む合金を溶製した。この溶湯の一部をガ
ス吸収用鋳型に鋳造し、さらにこの溶湯を７２０℃にし
Ａｌｌ−１１，５％ＲＥＭ合金を添加し、ＲＥＭを含有
する合金を溶製してガス吸収鋳型型に鋳造した。Next, measure this molten metal, hold one at 750°C, and prepare A
[-18%S 1-10%Sr alloy added, Al-S
An iAl-Si-alloy molten metal was prepared. This molten metal is 720
C., water-absorbing isolite was charged into the molten metal again, and an alloy containing about 1.0 cc/100 g of hydrogen gas (saturated amount at 720.degree. C.) was melted. A part of this molten metal was cast into a gas absorption mold, the molten metal was further heated to 720°C, and All-11.5% REM alloy was added, and an alloy containing REM was melted and cast into a gas absorption mold. .
一方、前に溶製した１、０ ｃｃ／１００ｇの水素ガス
を吸収させたＡｌ −３ｔ −Ｍｇ合金７２０℃にてＡ
ｌ−１１，５％ＲＥＭ合金を添加し、ＲＥＭを含む合金
を溶製しガス吸収用鋳型に鋳造した。On the other hand, the previously produced Al-3t-Mg alloy that had absorbed 1.0 cc/100g of hydrogen gas was heated at 720°C.
1-11.5% REM alloy was added, and the alloy containing REM was melted and cast into a gas absorption mold.
それぞれの合金中に残留した水素のガス分析結果及び合
金中のＲＥＭ及びＳｒの残留量を表に示す。The table shows the gas analysis results of hydrogen remaining in each alloy and the residual amounts of REM and Sr in the alloy.
表より本発明にかかるＲＥＭを含有させた合金の場合は
、いずれも水素ガス含有量が０．１０ ｃｃ／１００ｇ
以下であり、健全な鋳物が得られ、殊に金型では０．０
４ ｃｃ／ １００ｇ以上のものが得られた。From the table, in the case of alloys containing REM according to the present invention, the hydrogen gas content is 0.10 cc/100g.
0.0 or less, and a sound casting can be obtained, especially in the mold.
More than 4 cc/100 g was obtained.
（発明の効果）
本発明によれば、Ｓｒに加えてＡ１−ＲＥＭ系合金をも
添加するので、Ａｌ −Ｓｉ −Ｓｒ基合金のガス含有
量を著しく減少させ、ピンホールのない、機械的性質の
優れたＳｒおよびＲＥＭ含有のＡｌ−Ｓｉ基合金を安価
にかつ確実に製造することができる。(Effects of the Invention) According to the present invention, since the A1-REM alloy is added in addition to Sr, the gas content of the Al-Si-Sr-based alloy is significantly reduced, and the mechanical properties without pinholes are improved. An Al-Si based alloy containing excellent Sr and REM can be manufactured at low cost and reliably.
Claims (1)
Ｓｉ基合金溶湯中にＡｌ−ＲＥＭ系合金を添加し、該溶
湯中に０．０１０〜０．０４５重量％のＲＥＭを残留さ
せることを特徴とするＡｌ−Ｓｉ基合金の製造方法。1. Al- containing 0.001 to 0.30% by weight of Sr
A method for producing an Al-Si-based alloy, which comprises adding an Al-REM alloy to a molten Si-based alloy, and leaving 0.010 to 0.045% by weight of REM in the molten metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2979487A JPS63199834A (en) | 1987-02-13 | 1987-02-13 | Manufacture of al-si-base alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2979487A JPS63199834A (en) | 1987-02-13 | 1987-02-13 | Manufacture of al-si-base alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63199834A true JPS63199834A (en) | 1988-08-18 |
Family
ID=12285901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2979487A Pending JPS63199834A (en) | 1987-02-13 | 1987-02-13 | Manufacture of al-si-base alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63199834A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05320808A (en) * | 1992-05-22 | 1993-12-07 | Furukawa Alum Co Ltd | Aluminum alloy sheet for di forming |
| CN103924106A (en) * | 2014-03-21 | 2014-07-16 | 南昌大学 | Preparation method of aluminum praseodymium holmium ternary intermediate alloy |
| CN105543517A (en) * | 2015-12-18 | 2016-05-04 | 西南铝业（集团）有限责任公司 | Preparation method for aluminum-silicon intermediate alloy |
| CN111218577A (en) * | 2020-03-11 | 2020-06-02 | 河北工业大学 | Composite refining-modifying agent for cast aluminum alloy and preparation method and application thereof |
| CN111455227A (en) * | 2020-04-01 | 2020-07-28 | 湖南理工学院 | Sr and RE-containing aluminum-silicon alloy and preparation method thereof |
| CN111719058A (en) * | 2020-06-18 | 2020-09-29 | 无锡邦得机械有限公司 | Production process of automobile intercooler air chamber |
-
1987
- 1987-02-13 JP JP2979487A patent/JPS63199834A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05320808A (en) * | 1992-05-22 | 1993-12-07 | Furukawa Alum Co Ltd | Aluminum alloy sheet for di forming |
| CN103924106A (en) * | 2014-03-21 | 2014-07-16 | 南昌大学 | Preparation method of aluminum praseodymium holmium ternary intermediate alloy |
| CN105543517A (en) * | 2015-12-18 | 2016-05-04 | 西南铝业（集团）有限责任公司 | Preparation method for aluminum-silicon intermediate alloy |
| CN105543517B (en) * | 2015-12-18 | 2018-01-26 | 西南铝业（集团）有限责任公司 | A kind of aluminium silicon intermediate alloy preparation method |
| CN111218577A (en) * | 2020-03-11 | 2020-06-02 | 河北工业大学 | Composite refining-modifying agent for cast aluminum alloy and preparation method and application thereof |
| CN111455227A (en) * | 2020-04-01 | 2020-07-28 | 湖南理工学院 | Sr and RE-containing aluminum-silicon alloy and preparation method thereof |
| CN111719058A (en) * | 2020-06-18 | 2020-09-29 | 无锡邦得机械有限公司 | Production process of automobile intercooler air chamber |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4974591B2 (en) | Graphite spheroidizing agent and method for producing spheroidal graphite cast iron using the same | |
| US4053304A (en) | Flux for refinement of pro-eutectic silicon crystal grains in high-silicon aluminum alloys | |
| JPH0762479A (en) | High toughness and high strength aluminum alloy casting | |
| JPS63199834A (en) | Manufacture of al-si-base alloy | |
| US4009026A (en) | Strontium-silicon-aluminum master alloy and process therefor | |
| US4544407A (en) | Process for producing cast iron castings with a vermicular graphite structure | |
| US3033676A (en) | Nickel-containing inoculant | |
| US4131456A (en) | Chill-free foundry iron | |
| JP4541545B2 (en) | Method for producing pseudo-spherical graphite iron (CGI) | |
| CA2061164A1 (en) | Inoculation wire | |
| US3627518A (en) | Modification of si and mg2si second phase in al alloys | |
| JP2000008134A (en) | Modification of microstructure of mother alloy and nonferrous metal alloy and production of mother alloy | |
| JPH01149938A (en) | Non-heat-treated-type aluminum alloy for high-pressure casting | |
| JPS63270442A (en) | Magnesium alloy die cast product and its production | |
| JPH07118785A (en) | Mg alloy for casting, non porosity mg alloy casting and their production | |
| JPH06145866A (en) | Aluminum alloy for high pressure casting excellent in castability | |
| JPH0665666A (en) | High toughness and high strength aluminum alloy casting | |
| SU532645A1 (en) | Ligature | |
| JPH10158771A (en) | Aluminum alloy for casting, excellent in pressure resistance | |
| Baliktay et al. | Contribution to the Effect of Calcium on Microstructure and Tendency for Porosity by the Example of the Near Eutectic Cast Aluminum Alloy G-AlSi 10 Mg Under Application of the Thermal Analysis as Testing Procedure | |
| RU2198234C2 (en) | Magnesium-based alloy and article made from this alloy | |
| JP2777028B2 (en) | Manufacturing method of spheroidal graphite cast iron | |
| Ershov | Master Alloy for Manufacture of Aluminum Foundry Alloy | |
| JPS6140300B2 (en) | ||
| JP2017071840A (en) | High toughness aluminum alloy cast and manufacturing method therefor |