JPH02224862A - Method and apparatus for forging molten metal - Google Patents
Method and apparatus for forging molten metalInfo
- Publication number
- JPH02224862A JPH02224862A JP4881989A JP4881989A JPH02224862A JP H02224862 A JPH02224862 A JP H02224862A JP 4881989 A JP4881989 A JP 4881989A JP 4881989 A JP4881989 A JP 4881989A JP H02224862 A JPH02224862 A JP H02224862A
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- sheet member
- cavity
- mold
- molten
- 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
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 45
- 239000002184 metal Substances 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000005242 forging Methods 0.000 title claims description 12
- 239000000463 material Substances 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 12
- 229910000838 Al alloy Inorganic materials 0.000 description 15
- 229910000861 Mg alloy Inorganic materials 0.000 description 13
- 239000000919 ceramic Substances 0.000 description 10
- 239000000835 fiber Substances 0.000 description 9
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 238000003825 pressing Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000002657 fibrous material Substances 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229910001020 Au alloy Inorganic materials 0.000 description 1
- 229940062328 actos Drugs 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003353 gold alloy Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910001234 light alloy Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- HYAFETHFCAUJAY-UHFFFAOYSA-N pioglitazone Chemical compound N1=CC(CC)=CC=C1CCOC(C=C1)=CC=C1CC1C(=O)NC(=O)S1 HYAFETHFCAUJAY-UHFFFAOYSA-N 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000002966 varnish Substances 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、例えば内燃機関のピストン等を成形する溶湯
鍛造方法及びその装置に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a molten metal forging method and apparatus for forming, for example, a piston for an internal combustion engine.
従来の技術
従来、例えば軽合金製ピストン等を製造する方法、とじ
ては、一般に溶湯鍛造法が用いられており、この一つに
所謂プランジャー加圧法によるものが知られている。こ
れは、上金型と下金型とにより形成されたキャビティ内
に例えばアルミ合金の溶湯金属を注湯し、その後該キャ
ビティ内の溶湯金属をパンチにより上方向から高圧で加
圧しつつ凝固させ、その後離型を行なってピストンの粗
材を成形するようになっている。このように、溶湯金属
が凝固するまで加圧することによって、収縮巣やピンホ
ールなどの欠陥が除去され、凝固組織の微細化により疲
労強度等の機械的品質が向上する。BACKGROUND OF THE INVENTION Conventionally, for example, a method for manufacturing light alloy pistons and the like has generally used a molten metal forging method, one of which is known as a so-called plunger pressurization method. This involves pouring molten metal, such as aluminum alloy, into a cavity formed by an upper mold and a lower mold, and then solidifying the molten metal in the cavity while applying high pressure from above using a punch. After that, the mold is released and the rough material of the piston is formed. In this way, by pressurizing the molten metal until it solidifies, defects such as shrinkage cavities and pinholes are removed, and mechanical quality such as fatigue strength is improved by making the solidified structure finer.
ところで、斯かる溶湯鍛造法においては、潤滑性や離型
性を得るために、溶湯金属をキャビティ内に注湯する前
に金型内に塗型材を設けることが一般に行われており、
この塗型材は黒鉛系と断熱系の２つがある（金属材料・
第１５巻第２号・１９７５年２月１日・日刊工業新聞社
発行・第２０頁参照）。By the way, in such a molten metal forging method, in order to obtain lubricity and mold releasability, a coating material is generally provided in the mold before pouring the molten metal into the cavity.
There are two types of coating materials: graphite-based and heat-insulating.
(See Vol. 15, No. 2, February 1, 1975, Published by Nikkan Kogyo Shimbun, p. 20).
発明が解決しようとする課題
然し乍ら、上記黒鉛系塗型材は、潤滑性等には優れてい
るものの、金型内への塗布に際して膜厚を大きくするこ
とが困難であり、また熱伝導性が良いため保温性が乏し
く、特にピストンなどのような小物や薄肉製品の加圧鋳
造に際しては、例えば薄肉なスカート部を成形する溶湯
金属が加圧前に凝固してしまい、上述のような加圧効果
が著しく低下し、疲労強度等の機械的品質が低下し、疲
労強度等の機械的品質が低下する。Problems to be Solved by the InventionHowever, although the graphite-based coating material has excellent lubricity, etc., it is difficult to increase the film thickness when coating it inside a mold, and it also has good thermal conductivity. Therefore, heat retention is poor, and especially when pressurizing small items such as pistons or thin-walled products, for example, the molten metal that is used to form the thin-walled skirt solidifies before pressurization, resulting in the above-mentioned pressure effect. is significantly reduced, mechanical quality such as fatigue strength is reduced, and mechanical quality such as fatigue strength is reduced.
一方、断熱系塗型材は、一般に基材の粒子が粗いため、
凝固の成形品の離型性が悪化し、製造作業能率の低下を
招く。On the other hand, insulation type coating materials generally have coarse particles in the base material, so
The releasability of solidified molded products deteriorates, leading to a decrease in manufacturing efficiency.
課題を解決するための手段
本発明は、上記従来の問題点に鑑みて案出されたもので
、従来における塗型材を廃止したものであって、金型の
内部に溶湯金属を注湯した後、該溶湯金属を加圧して粗
材を成形する溶湯鍛造方法において、上記溶湯金属を注
湯する前に、上記金型内にシート部材を装着したことを
特徴としている。Means for Solving the Problems The present invention has been devised in view of the above-mentioned conventional problems, and eliminates the conventional mold coating material. , a molten metal forging method in which a raw material is formed by pressurizing the molten metal, characterized in that a sheet member is installed in the mold before pouring the molten metal.
また、金型の内周面と溶湯金属との間にシート部材を介
装したことを特徴としている。It is also characterized in that a sheet member is interposed between the inner peripheral surface of the mold and the molten metal.
作用
上記構成の本発明によれば、金型内に溶湯金属を注湯し
た際、シート部材によって溶湯金属から金型への伝熱が
遮断されるため、溶湯金属の凝固速度が遅延し、この結
果、パンチによる加圧効果が向上する。Effects According to the present invention having the above configuration, when molten metal is poured into a mold, the sheet member blocks heat transfer from the molten metal to the mold, so the solidification rate of the molten metal is delayed, and this As a result, the pressurizing effect by punching is improved.
実施例 以下、本発明の実施例を図面等に基づいて詳述する。Example Embodiments of the present invention will be described in detail below based on the drawings and the like.
まず、溶湯鍛造装置を内燃機関のピストンの製造に適用
した各実施例を第１図及び第２図により説明すれば、第
１図の１は略円筒状の上金型、２は該上金型ｌの下部に
配置され、かつ略中央上面にピストン中空部成形用の中
子３を一体に突設してなる下金型、４は両全型１．２で
構成されたキャビティであって、このキャビティ４の内
部にはアルミ合金（ＡＱ金合金あるいはマグネシウム合
金（Ｍｇ合金）が溶湯金属５ａ、５ｂとして注湯される
ようになっている。また、この溶湯金属５ ａ ＋５ｂ
は、キャビティ４上方から進入する円柱状の加圧パンチ
６によって所定の高圧力で加圧されるようになっている
。First, each embodiment in which a molten metal forging apparatus is applied to the manufacture of a piston for an internal combustion engine will be explained with reference to FIGS. 1 and 2. In FIG. 1, 1 is a substantially cylindrical upper mold; A lower mold 4 is disposed at the lower part of the mold 1 and has a core 3 for molding the hollow piston integrally protruding from the upper surface of the piston hollow part, and 4 is a cavity composed of both molds 1.2. , Aluminum alloy (AQ gold alloy or magnesium alloy (Mg alloy) is poured into the cavity 4 as molten metals 5a and 5b. Also, this molten metal 5a + 5b
is pressurized at a predetermined high pressure by a cylindrical pressure punch 6 that enters the cavity 4 from above.
そして、上記キャビティ４の下部内周面には、円環状の
シート部材７が装着されている。このシート部材７は、
アルミナシリカ繊維材ｃＡｃ、ｏｓ４８％、Ｓ、０．５
２％）からなり、その肉厚が約０．５ｇ＋ｎに設定され
ているか、あるいはアルミナ繊維材（Ａｃｔｏｓ９７％
、 ５ｔｏｔ３％）で、肉厚が約１嘗ｌに設定されてい
る。An annular sheet member 7 is attached to the lower inner circumferential surface of the cavity 4. This sheet member 7 is
Alumina silica fiber material cAc, os48%, S, 0.5
2%) and its wall thickness is set to approximately 0.5g+n, or it is made of alumina fiber material (Actos 97%).
, 5to3%), and the wall thickness is set to approximately 1 liter.
第２図は、本発明の第２実施例を示し、セラミツク繊維
強化ピストンを製造するための装置であって、上記第１
実施例の構成を前提として、中子３にセラミック繊維成
形体８を被嵌したものである。このセラミック繊維成形
体８は、ピストンの内壁を構成するために略有蓋円筒状
に形成され、その成分は上記アルミナシリカ繊維材と同
様にＡＱｔＱｓ４８％、 ｓ、ｏｔ５２％に設定されて
いる。FIG. 2 shows a second embodiment of the present invention, which is an apparatus for manufacturing a ceramic fiber-reinforced piston.
Based on the configuration of the embodiment, a ceramic fiber molded body 8 is fitted onto the core 3. This ceramic fiber molded body 8 is formed into a substantially closed cylindrical shape to constitute the inner wall of the piston, and its composition is set to be 48% AQtQs and 52% s, ot, similar to the alumina-silica fiber material described above.
次に、この溶湯鍛造装置によってピストン成形体を製造
する方法を、実験結果を示す別表に基づいて詳述する。Next, a method for manufacturing a piston molded body using this molten metal forging apparatus will be described in detail based on the attached table showing experimental results.
この実験例は、基本的には上記シート部材７を装着した
場合と非装着の場合を比較したものであって、加圧力等
の諸条件を変えて行なっている。すなわち、実験例ＮＯ
，１〜７は、第１実施例の装置、Ｎ０１８〜Ｉ３は第２
実施例の装置を夫々使用した場合の実験例であって、Ｎ
ｏ、 １〜３．ＮＯ，８〜ＩＯは溶湯金属としてＡＣ８
Ａのアルミ合金、Ｎｏ、 ４〜７．ＮＯ，ｉ ｔ 〜１
３はＡＺ９２（７）？グネシウム合金を夫々使用してい
る。また、キャビティ４の内径を８８ｍｍ〜１０５ｍｍ
間で任意に設定しており、加圧バンチ６の溶湯加圧力も
７５０ ｋｌ・’／ｃ＋ｓ″と１０００口６ ｒ ／
ｃｖａ ＊に分けて行なった。また、アルミ合金溶湯５
ａ温度は約７５０℃、マグネシウム合金溶湯５ｂ温度は
約７２０℃に設定した。更に、シート部材７は、アルミ
合金溶湯５ａの場合は０．５ｍ−厚のものを、マグネシ
ウム合金溶湯５ｂの場合は１■厚のものを使用しており
、また、シート部材７の装着、非装着に拘わらず、キャ
ビティ４の内周面全体および加圧パンチ６下面に黒鉛系
塗梨材を塗布した。This experimental example basically compares the case where the sheet member 7 is attached and the case where it is not attached, and various conditions such as the pressing force are changed. That is, experimental example NO.
, 1 to 7 are the devices of the first embodiment, and N018 to I3 are the devices of the second embodiment.
This is an experimental example in which each of the apparatuses of the embodiment is used, and N
o, 1-3. NO, 8 to IO are AC8 as molten metal
Aluminum alloy of A, No. 4-7. NO, it ~1
3 is AZ92 (7)? Each uses a gnesium alloy. In addition, the inner diameter of cavity 4 is set to 88 mm to 105 mm.
The molten metal pressing force of the pressure bunch 6 is also set arbitrarily between 750 kl・'/c+s'' and 1000 ports 6 r/s.
It was divided into cva *. In addition, aluminum alloy molten metal 5
The temperature a was set at about 750°C, and the temperature of the molten magnesium alloy 5b was set at about 720°C. Furthermore, the sheet member 7 is 0.5 m thick for the molten aluminum alloy 5a, and 1 mm thick for the molten magnesium alloy 5b. Regardless of the mounting, a graphite-based varnish was applied to the entire inner circumferential surface of the cavity 4 and the lower surface of the pressure punch 6.
そして、まず上記東Ｉ実施例の装置を使用した実験例で
は、上金型１を３５０℃に、下金型２を２５０℃、加圧
バンチ６を２８０℃に加熱しておき、加圧バンチ６を引
き上げて０．５＠ｍあるいはｌｌｌｌ１１厚さのシート
部材７を予めキャビティ４内に装着する。次に、上記ア
ルミ合金溶湯５ａあるいはマグネシウム合金溶湯５ｂを
キャビティ４内に注湯し、直ちに加圧バンチ６で上方か
ら加圧し、凝固完了迄この状態を維持した。First, in an experimental example using the apparatus of the above-mentioned To I Example, the upper mold 1 was heated to 350°C, the lower mold 2 was heated to 250°C, and the pressure bunch 6 was heated to 280°C. 6 is pulled up and a sheet member 7 having a thickness of 0.5@m or llll11 is installed in the cavity 4 in advance. Next, the molten aluminum alloy 5a or the molten magnesium alloy 5b was poured into the cavity 4, and immediately pressurized from above with a pressurizing bunch 6, and this state was maintained until solidification was completed.
一方、上記第２実施例の装置を使用した実施例では、上
下金型１，２．加圧バンチ６の加熱温度は、第１実施例
の場合と同様であり、シート部材７もアルミ合金溶湯５
ａでは０．５ｍｓ厚、マグネシウム合金溶湯５ｂではＩ
Ｉ厚のものを使用し、これを予めキャビティ４内に装着
する。また、約４５０℃に予め加熱したセラミック繊維
成形体８を、中子３に被嵌しておく。後は、上記第１実
施例と同様にキャビティ４内への溶湯金属の注湯を行な
い、それを加圧バンチ６であ加圧する。これによってア
ルミ合金溶湯５ａあるいはマグネシウム合金溶湯５ｂが
、セラミック繊維成形体８にマトリックスしてセラミッ
ク繊維強化ピストン成形体が得られる。On the other hand, in an embodiment using the apparatus of the second embodiment, the upper and lower molds 1, 2. The heating temperature of the pressurized bunch 6 is the same as in the first embodiment, and the sheet member 7 is also heated to the molten aluminum alloy 5.
0.5ms thickness for a, I for molten magnesium alloy 5b
I-thick one is used and installed in the cavity 4 in advance. Further, a ceramic fiber molded body 8 preheated to about 450° C. is fitted onto the core 3. After that, molten metal is poured into the cavity 4 in the same manner as in the first embodiment, and the molten metal is pressurized by the pressurizing bunch 6. As a result, the aluminum alloy molten metal 5a or the magnesium alloy molten metal 5b is matrixed in the ceramic fiber molded body 8, and a ceramic fiber reinforced piston molded body is obtained.
以下余白
上記別表で示すように、実験例ＮＯ，１〜３．４〜７に
おいて、シート部材７が非装首の場合は、加圧バンチ６
の加圧力が７５０ ｋ′ｌ−’／ａｍ’の場合（Ｎｏ、
２ 、 Ｎｏ、 ５ ）は、上述のような加圧効果が
不足し、成形品内部にピンホール等が発生し、また表面
の艶がな（転写不良を起こした。しかし、キャビティ４
の内径を９０ｍｍあるいは１１０５ａに拡大しかつ加圧
バンチ６の加圧力を１ｏｏｏ”・１／Ｃｍ”に上げた場
合（ＮＯ，３、Ｎｏ、 ７ ’）は、アルミ合金溶湯５
ａあるいはマグネシウム合金溶湯５ｂがピストンスカー
トの下端縁部５ｃまで完全に充填されて加圧効果が十分
に得られた。また、成形品の表面が金型形状に馴染んで
表面に艶が発生し、良好な転写が得られた。Margin below As shown in the attached table above, in Experimental Examples No. 1 to 3.4 to 7, when the sheet member 7 is not attached to the neck, the pressure bunch 6
When the applied force is 750 k'l-'/am' (No,
2, No. 5), the pressurizing effect as mentioned above was insufficient, pinholes etc. occurred inside the molded product, and the surface was dull (transfer failure occurred.However, cavity 4
When the inner diameter of the molten aluminum alloy 5 is expanded to 90 mm or 1105a and the pressing force of the press bunch 6 is increased to 1ooo"・1/Cm" (NO, 3, No, 7'), the molten aluminum alloy 5
A or the molten magnesium alloy 5b was completely filled up to the lower edge 5c of the piston skirt, and a sufficient pressurizing effect was obtained. In addition, the surface of the molded product conformed to the shape of the mold, resulting in a glossy surface, and good transfer was obtained.
これに対し、シート部材７を装着した場合は、キャビテ
ィ４内径が８８ｍ５あるいは１ｏｓｓ−で加圧力が７５
０ ｋｌＩ−’／ａｍ”であっても（Ｎｏ、 ｌ 、
ＮＯ，４）、上記１０００ ”’／ｃｖ”と同様な加圧
効果が得られたと共に、表面の艶も発生し、良好な転写
が得られた。これは、シート部材７の効果的な断熱作用
によって両合金溶湯５ａ、５ｂの凝固速度を十分に遅ら
せることができることに起因している。したがって、ピ
ストンの疲労強度等が向上すると共に、外径を可及的に
小さくすることができる。また、次工程でピストン表面
加工としての切削仕上げ量が少なくて済み、その作業性
が向上すると共に、原料消費量上も有利となる。しかも
、加圧バンチ６の加圧力も小さくできるので、装置の負
荷が軽減する。On the other hand, when the seat member 7 is installed, the inner diameter of the cavity 4 is 88 m5 or 1 oss-, and the pressing force is 75 mm.
0 klI-'/am'' (No, l,
No. 4), a pressure effect similar to that of the above 1000''/cv was obtained, and the surface became glossy, resulting in good transfer. This is because the effective heat insulating action of the sheet member 7 can sufficiently slow down the solidification rate of both the molten metals 5a and 5b. Therefore, the fatigue strength of the piston is improved, and the outer diameter can be made as small as possible. In addition, the amount of finishing required for piston surface processing in the next step is small, which improves workability and is advantageous in terms of raw material consumption. Moreover, since the pressing force of the pressing bunch 6 can also be reduced, the load on the apparatus is reduced.
一方、実験例８〜１０．１１〜１３において、シート部
材７が非装着の場合で、かつキャビティ゛４の内径が９
０■（アルミ合金溶湯５ａ）及び１００■ｍ（マグネシ
ウム合金溶湯５ｂ）の場合は、７５０ ｋｌＩ−’／ａ
ｍ”の圧力を加えるとセラミック繊維成形体８の周辺部
に潰れ損傷が発生した（ＮＯ，９゜１２）。しかし、ア
ルミ合金溶湯５ａの場合でキャビティ４内径を１００１
とした場合（ＮＯ，１０）、あるいはマグネシウム合金
溶湯５ｂの場合でキャビティ４内径を１０５１とした場
合（ＮＯ，１３）はセラミック繊維成形体８の漬れ損傷
がみられなかった。On the other hand, in Experimental Examples 8 to 10 and 11 to 13, when the sheet member 7 was not attached and the inner diameter of the cavity 4 was 9.
0 ■ (molten aluminum alloy 5a) and 100 ■ m (molten magnesium alloy 5b), 750 klI-'/a
When a pressure of 1.5 m" was applied, crushing damage occurred in the periphery of the ceramic fiber molded body 8 (NO, 9°12). However, in the case of the molten aluminum alloy 5a, the inner diameter of the cavity 4 was
(NO, 10), or when the inside diameter of the cavity 4 was 1051 mm (NO, 13) in the case of the molten magnesium alloy 5b, no soaking damage was observed in the ceramic fiber molded body 8.
これに対し、シート部材７を装着した場合は、アルミ合
金溶湯５ａで、キャビティ４内径が９０ａｍの場合（Ｎ
Ｏ，８）、あるいはマグネシウム合金溶湯５ｂでキャビ
ティ４内径が１００ｏｕａの夫々小径に設定した場合（
ＮＯ，ｌｌ）であっても、上記加圧効果が十分に得られ
たことは勿論のことセラミック繊維成形体８の潰れ損傷
が全くみられなかった。したがって、シート部材７を装
着した場合はセラミック繊維成形体８によるピストンの
剛性を確保しつつピストンの外径を可及的に小さく設定
することができると共に、表面加工作業の簡素化が図れ
る。On the other hand, when the sheet member 7 is installed, the molten aluminum alloy 5a is used, and the inner diameter of the cavity 4 is 90 am (N
O, 8), or when the inner diameter of the cavity 4 is set to a small diameter of 100 oua in the molten magnesium alloy 5b (
Even with NO, ll), not only the above-mentioned pressurizing effect was sufficiently obtained, but also no crushing damage to the ceramic fiber molded body 8 was observed. Therefore, when the seat member 7 is attached, the outer diameter of the piston can be set as small as possible while ensuring the rigidity of the piston due to the ceramic fiber molded body 8, and the surface processing work can be simplified.
尚、本発明は、上記各実施例における内燃機関のピスト
ンを成形するものに限定されず、大きなものから小さな
ものまで１１広い成形物を対象にすることができる。ま
た、シート部材７は、次工程のピストン外径を切削加工
する際にピストン本体と共に切削加工されることにより
取り除かれる。It should be noted that the present invention is not limited to the molding of pistons for internal combustion engines in the above embodiments, but can be applied to a wide range of molded products, from large to small. Moreover, the seat member 7 is removed by being cut together with the piston body when cutting the outer diameter of the piston in the next step.
さらに、シート部材７の金型内への装着位置も成形対象
物によって任意に変更できる。Furthermore, the mounting position of the sheet member 7 in the mold can be arbitrarily changed depending on the object to be molded.
発明の効果
以上の説明で明らかなように、本発明によれば、金型内
に注湯された溶湯金属は、シート部材の断熱作用によっ
て、その凝固速度が十分に遅延するため、パンチによる
加圧効果が十分に得られ、したがって、成形品の疲労強
度等の機械的品質が向上する。この結果、小物や薄肉製
品の成形が可能になる。Effects of the Invention As is clear from the above explanation, according to the present invention, the solidification rate of the molten metal poured into the mold is sufficiently delayed due to the heat insulating effect of the sheet member, so that no punching is possible. A sufficient pressure effect is obtained, thus improving the mechanical quality of the molded article, such as its fatigue strength. As a result, it becomes possible to mold small items and thin-walled products.
第１図は本発明に係る溶湯鍛造装置の第１実施例を示す
断面図、第２図は本発明の第２実施例を示す断面図であ
る。
１・・・上金型、２・・・下金型、５ａ・・・アルミ合
金溶湯、５ｂ・・・マグネシウム合金溶湯、６・・・加
圧パンチ、７・・・シート部材。
ト・・上金型
２・・・下金型
５ａ・・・アルミ合金溶湯
５ｂ・・・マグネシウム合金溶湯
６・・・加圧パンチ
７・・・ソート部材FIG. 1 is a sectional view showing a first embodiment of a molten metal forging apparatus according to the present invention, and FIG. 2 is a sectional view showing a second embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Upper mold, 2... Lower mold, 5a... Aluminum alloy molten metal, 5b... Magnesium alloy molten metal, 6... Pressure punch, 7... Sheet member. G... Upper mold 2... Lower mold 5a... Aluminum alloy molten metal 5b... Magnesium alloy molten metal 6... Pressure punch 7... Sorting member
Claims (2)
を加圧して粗材を成形する溶湯鍛造方法において、上記
溶湯金属を注湯する前に、上記金型内にシート部材を装
着したことを特徴とする溶湯鍛造方法。(1) In a molten metal forging method in which molten metal is poured into a mold and then the molten metal is pressurized to form a rough material, a sheet member is placed in the mold before pouring the molten metal. A molten metal forging method characterized by being equipped with.
形する溶湯鍛造装置において、上記金型の内周面と溶湯
金属との間にシート部材を介装したことを特徴とする溶
湯鍛造装置。(2) A molten metal forging device that pressurizes molten metal poured into a mold to form a rough material, characterized in that a sheet member is interposed between the inner peripheral surface of the mold and the molten metal. Molten metal forging equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4881989A JPH02224862A (en) | 1989-02-28 | 1989-02-28 | Method and apparatus for forging molten metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4881989A JPH02224862A (en) | 1989-02-28 | 1989-02-28 | Method and apparatus for forging molten metal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02224862A true JPH02224862A (en) | 1990-09-06 |
Family
ID=12813831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4881989A Pending JPH02224862A (en) | 1989-02-28 | 1989-02-28 | Method and apparatus for forging molten metal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02224862A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012229744A (en) * | 2011-04-26 | 2012-11-22 | Samtec Kk | Molded cup for pressure vessel and manufacturing method therefor |
| US9704793B2 (en) | 2011-01-04 | 2017-07-11 | Napra Co., Ltd. | Substrate for electronic device and electronic device |
-
1989
- 1989-02-28 JP JP4881989A patent/JPH02224862A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9704793B2 (en) | 2011-01-04 | 2017-07-11 | Napra Co., Ltd. | Substrate for electronic device and electronic device |
| JP2012229744A (en) * | 2011-04-26 | 2012-11-22 | Samtec Kk | Molded cup for pressure vessel and manufacturing method therefor |
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