JPS596722B2 - Manufacturing method of aluminum↓-lead alloy flat plate - Google Patents
Manufacturing method of aluminum↓-lead alloy flat plateInfo
- Publication number
- JPS596722B2 JPS596722B2 JP132078A JP132078A JPS596722B2 JP S596722 B2 JPS596722 B2 JP S596722B2 JP 132078 A JP132078 A JP 132078A JP 132078 A JP132078 A JP 132078A JP S596722 B2 JPS596722 B2 JP S596722B2
- Authority
- JP
- Japan
- Prior art keywords
- alloy powder
- extrusion
- pipe
- wall surface
- flat plate
- 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.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/005—Continuous extrusion starting from solid state material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
- Extrusion Of Metal (AREA)
Description
【発明の詳細な説明】
本発明は、自動車用の平軸受などに用いられるAt−P
b合金の平板の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention provides At-P
The present invention relates to a method for manufacturing a flat plate of b alloy.
自動車用のエンジンの軸受けなどのベアリングには、C
u−Pb,kl−Sn合金などが使用されているが、特
性の面からAt−Pb合金が使用される傾向にある。Bearings such as automobile engine bearings contain C.
Although u-Pb and kl-Sn alloys have been used, there is a tendency for At-Pb alloys to be used from the viewpoint of characteristics.
しかしながら、At−Pb系合金は、pbが殆んどAt
に固溶しないため、通常の鋳造法による製造は不可能で
、粉末を作成し、これを焼結して平板を作るのが一般的
である。However, in At-Pb alloys, pb is almost At
Because it does not dissolve in solid solution, it is impossible to manufacture it by normal casting methods, and it is common to create a powder and sinter it to make a flat plate.
本発明は、At−Pb合金の平板材の安価で、技術的に
も容易な製造方法を提供するものであり、従来At合金
の鋳造法として良く知られている、ダイレクト、チル、
キャスチング(以下、DC法と呼ぶ)や、回転鋳造輪と
無端ベルトで構成されるプロペルチ法に代表される連続
鋳造圧延法(以下、プロペルチ法と呼ぶ)とは異なり、
溶質元素が前記2法よりも大量に固溶できる急冷凝固法
によるAt合金粉末を原料とするAt−Pb合金の製造
方法である。The present invention provides an inexpensive and technically easy manufacturing method for At-Pb alloy flat plate material, and employs direct, chill, and well-known At alloy casting methods.
Unlike casting (hereinafter referred to as the DC method) and continuous casting and rolling methods (hereinafter referred to as the Propelch method), which are typified by the Properch method, which is composed of a rotary casting wheel and an endless belt,
This is a method for producing an At-Pb alloy using At alloy powder as a raw material by a rapid solidification method that allows solute elements to be dissolved in solid solution in a larger amount than in the above two methods.
DC法では0.5 − 2 0℃/秒、プロペルチ法で
は0.5〜10℃/秒程度の冷却速度が得られるが、ウ
ォーターアトマイズ法によると、102〜103℃/秒
という冷却速度の急冷凝固材が得られ、溶質元素の固溶
限が格段に増加することを本発明者らは確認し、このよ
うな急冷凝固した材料を、例えば特開昭47−3185
9号、特開昭49−65369号に示された連続押出し
法に適用し、押出し時に、多量に固溶した溶質元素を微
細に析出分散させて潤滑性に優れたAt−Pb合金平板
を連続してしかも安価に製造できることを見いだしたも
のである。The DC method provides a cooling rate of 0.5-20°C/sec, the Properch method provides a cooling rate of approximately 0.5-10°C/sec, but the water atomization method provides rapid cooling at a cooling rate of 102-103°C/sec. The present inventors confirmed that a solidified material was obtained and the solid solubility limit of the solute element was significantly increased.
No. 9, applied to the continuous extrusion method shown in JP-A No. 49-65369, a large amount of solute elements dissolved in solid solution are finely precipitated and dispersed during extrusion to continuously produce At-Pb alloy flat plates with excellent lubricity. It was discovered that it can be manufactured at low cost.
本発明は、上述のように、At中に溶質元素であるpb
を多量かつ微細に分散させた潤滑性に優れたAt−Pb
合金平板を、安価にしかも容易に、また連続的に製造し
うる方法を提供せんとするものである。As mentioned above, the present invention is directed to pb, which is a solute element in At.
At-Pb with excellent lubricity, with a large amount and finely dispersed
The object of the present invention is to provide a method for manufacturing alloy flat plates inexpensively, easily, and continuously.
本発明は、Pb 6〜20係を含むAt−Pb合金粉末
から押出しにより平板を製造する方法にして、(a)
駆動壁面とそれより面積の小さい固定壁面とにより管
路が形成され、かつ該管路の駆動方向の後端が実質的に
閉じられている押出し装置を使用し、
(b) 上記管路の前端より、急冷凝固したA7−P
b合金粉末を連続的に供給し、
(c) 上記合金粉末が、上記管内で上記駆動壁面の
摩擦力により上記管路の後端に設けられた押出しダイス
に向って連続的に送り込まれ、押出力を付与されて連続
的に線材に押出されることにより、
(d) 上記管内の摩擦および加工による発熱と上記
押出力により、上記At合金粉末同志を金属接合させる
と共に、急冷凝固時に多量に固溶したpbを微細にAt
中に析出、分散させて潤滑性を向上することを特徴とす
るアルミニウムー鉛合金平板の製造方法である。The present invention provides a method for producing a flat plate by extrusion from an At-Pb alloy powder containing 6 to 20 Pb, including (a)
(b) using an extrusion device in which a conduit is formed by a driving wall surface and a fixed wall surface having a smaller area, and the rear end of the conduit in the driving direction is substantially closed; (b) the front end of the conduit; A7-P rapidly solidified from
b) Continuously supplying the alloy powder, (c) The alloy powder is continuously fed into the pipe by the frictional force of the driving wall surface toward the extrusion die provided at the rear end of the pipe, and is extruded. By applying power and continuously extruding it into a wire rod, (d) The heat generated by friction and processing in the tube and the extrusion force cause the At alloy powder to be metallurgically bonded to each other, and a large amount is solidified during rapid solidification. The dissolved PB is finely divided into At
This is a method for producing an aluminum-lead alloy flat plate characterized by improving lubricity by precipitating and dispersing the aluminum-lead alloy in the aluminum-lead alloy.
本発明において、Pb量を6〜20%と規定したのは、
6チ未満では潤滑性が劣り、20%を超えるとpbの均
一な分散状態が得られず、潤滑性が飽和するからである
。In the present invention, the Pb amount was specified as 6 to 20% because
This is because if it is less than 6%, the lubricity is poor, and if it exceeds 20%, a uniform dispersion state of Pb cannot be obtained and the lubricity is saturated.
以下、本発明を図面を用いて実施例により説明する。Hereinafter, the present invention will be explained by examples using the drawings.
実施例 1
純度99チの純Atに、単体のpbを用いて表1に示す
組成の合金を溶解し、鋳型下部よりI Kg/ sec
の速度で合金を落下させるとともに、鋳型の下方に設け
たノズルよりI P?l!l/ se cの速度で水を
噴霧してAt−Pb合金粉末を作成した。Example 1 An alloy having the composition shown in Table 1 was melted in pure At with a purity of 99 cm using a simple substance of PB, and the melt was melted at I kg/sec from the bottom of the mold.
At the same time, the alloy is dropped at a speed of l! At-Pb alloy powder was prepared by spraying water at a rate of l/sec.
この場合、ルツボ内の溶湯の温度は誕相線より50℃上
とした。In this case, the temperature of the molten metal in the crucible was set to be 50° C. above the birth phase line.
図は本発明の実施例に用いる連続押出し装置を説明する
断面図である。The figure is a sectional view illustrating a continuous extrusion device used in an example of the present invention.
図において、1は矢印方向に駆動される厚い円板状の駆
動ホイールで、その外周面には、At−Pb合金粉末を
連続的に供給できるよう溝2が設けられている。In the figure, reference numeral 1 denotes a thick disc-shaped drive wheel driven in the direction of the arrow, and grooves 2 are provided on the outer peripheral surface of the wheel so that At--Pb alloy powder can be continuously supplied.
ホイール1の外周面の一部に接して固定抑え具4が設け
られる。A fixing restrainer 4 is provided in contact with a part of the outer peripheral surface of the wheel 1.
ホイール1の溝2の内面の駆動壁面3と、固定抑え具4
の内面の固定壁而5とで管路が形成される。A drive wall surface 3 on the inner surface of the groove 2 of the wheel 1 and a fixed restraint 4
A conduit is formed by the fixed wall 5 on the inner surface of the pipe.
固定抑え具4の内側の後端には突起6が設けられ、管路
の後端開口部を閉じている。A protrusion 6 is provided at the inner rear end of the fixing restrainer 4 to close the rear end opening of the conduit.
管路の開口部に設けられた、粉末供給具7より連続的に
供給されたAt=Pb合金粉末8は、駆動壁面3の摩擦
力により、突起6に向って進行し、圧力がかけられ、押
出し力が付与される。The At=Pb alloy powder 8 continuously supplied from the powder supply tool 7 provided at the opening of the conduit advances toward the protrusion 6 due to the frictional force of the driving wall surface 3, and pressure is applied. Extrusion force is applied.
圧力を付与された合金粉末8は、管路の後端に設けられ
た押出しダイス9より押出される。The alloy powder 8 subjected to pressure is extruded from an extrusion die 9 provided at the rear end of the conduit.
合金粉末8は、固定壁而5との摩擦による温度上昇、押
出し時の加工発熱などにより、温度が上昇し、摩擦圧、
押出圧による金属結合がすすむと同時に、固溶された溶
質元素が、温度と加工の影響により析出し、微細に分散
する。The temperature of the alloy powder 8 increases due to friction with the fixed wall 5, heat generated during extrusion, etc., and the temperature increases due to friction pressure,
At the same time as metal bonding progresses due to extrusion pressure, solute elements dissolved in solid solution precipitate and become finely dispersed due to the effects of temperature and processing.
加工発熱は、押出し比、押出し速度などの加工条件に左
右されるので、溶質元素が析出し、微細分散する温度、
400〜600℃に加工条件を選択調節すれば良い。Processing heat generation depends on processing conditions such as extrusion ratio and extrusion speed, so the temperature at which solute elements precipitate and are finely dispersed,
The processing conditions may be selectively adjusted to 400 to 600°C.
この装置の管路の前端より上述のA7−Pb合金粉末を
連続的に装入し、押出し比80、押出し速度400m/
分で連続押出しを行ない、2簡×10rIrrnの板材
を得た。The above-mentioned A7-Pb alloy powder was continuously charged from the front end of the pipe line of this device, and the extrusion ratio was 80 and the extrusion speed was 400 m/min.
Continuous extrusion was carried out for 1 minute to obtain a plate material of 2 strips x 10 rirn.
このようにして作られたAA− P b合金板材からベ
アリング部品を作り、従来から使用されているAt−S
n合金のものと摩耗量を比較すると、表1に示すAI
, 2 , 3のAt−Pb合金のものは、At−Sn
合金のもののそれぞれ20%,7%,5チと格段に優れ
た結果を示した。Bearing parts are made from the AA-Pb alloy plate material made in this way, and the At-S
Comparing the wear amount with that of n alloy, the AI shown in Table 1
, 2, 3 are At-Pb alloys, At-Sn
The results were 20%, 7%, and 5%, respectively, much better than those of alloys.
なお本発明において使用する押出し装置は、例えば図に
示したような溝付駆動ホイールを用いた連続押出し装置
に限らず、例えば特開昭50−133153号に示され
た装置、すなわち所定の間隔で平行に保持されながら上
方および下方にそれぞれ抑えつけられた2本の駆動キャ
タピラより成る駆動壁面と、上記キャタピラの平行部分
に両側面を接するコ9字状の固定コンテナーの、上記駆
動壁面より面積の小さい両側面より成る固定壁面とで管
路を形成し、上記固定コンテナーの底部にて上記管路の
駆動方向の後端を閉塞し、上記管路の前端開口部を合金
粉末の挿入口とした連続押出し装置を用いても良い。The extrusion device used in the present invention is not limited to the continuous extrusion device using a grooved drive wheel as shown in the figure, for example, but also the device shown in JP-A-50-133153, that is, a continuous extrusion device using a grooved drive wheel as shown in the figure. A drive wall surface consisting of two drive caterpillars that are held parallel and pressed upward and downward, respectively, and a U-shaped fixed container whose both sides are in contact with the parallel parts of the caterpillars, which have an area larger than the drive wall surface. A conduit is formed with a fixed wall surface consisting of both small side surfaces, the rear end of the conduit in the driving direction is closed at the bottom of the fixed container, and the front end opening of the conduit is used as an insertion port for alloy powder. A continuous extrusion device may also be used.
以上述べたように、本発明方法は、連続押出し装置に供
給する材料として急冷凝固した、例えばウォーターアト
マイズ法により作成したAt−Pb合金粉末を使用し、
押出される際の摩擦熱、加工発熱により温度を上昇させ
て固溶した溶質元素を微細に析出、分散させることがで
き、優れた潤滑性が得られ、しかも長尺物を容易に、し
かも安価に製造できる効果がある。As described above, the method of the present invention uses rapidly solidified At-Pb alloy powder produced by water atomization, for example, as a material to be supplied to a continuous extrusion device,
It is possible to finely precipitate and disperse solid solute elements by raising the temperature due to frictional heat and processing heat during extrusion, providing excellent lubricity, and making it easy to manufacture long objects at a low cost. It has the effect of being able to be manufactured.
【図面の簡単な説明】
図は本発明の実施例に用いる連続押出し装置を説明する
断面図である。
1・・・・・・駆動ホイール、2・・・・・・溝、3・
・・・・・駆動壁面、4・・・・・・固定抑え具、5・
・・・・・固定壁面、6・・・・・・突起、7・・・・
・・粉末供給礼、8・・・・・・At合金粉末、9・・
・・・・押出しダイス。BRIEF DESCRIPTION OF THE DRAWINGS The figure is a sectional view illustrating a continuous extrusion device used in an embodiment of the present invention. 1... Drive wheel, 2... Groove, 3.
... Drive wall surface, 4 ... Fixed restraint, 5.
... Fixed wall surface, 6 ... Protrusion, 7 ...
...Thank you for supplying the powder, 8...At alloy powder, 9...
...Extrusion die.
Claims (1)
により平板を製造する方法にして、(a) 駆動壁面
とそれより面積の小さい固定壁面とにより管路が形成さ
れ、かつ該管路の駆動方向の後端が実質的に閉じられて
いる押出し装置を使用し、 ω)上記管路の前端より、急冷凝固したAt−Pb合金
粉末を連続的に供給し、 (c)上記合金粉末が、上記管内で上記駆動壁面の摩擦
力により上記管路の後端に設けられた押出しダイスに向
って連続的に送り込まれ、押出力を付与されて連続的に
板材に押出されることにより、 ((1)上記管内の摩擦および加工による発熱と上記押
出力により、上記A7合金粉末同志を金属接合させると
共に、急冷凝固時に多量に固溶したpbを微細にA7中
に析出、分散させることを特徴とするアルミニウムー鉛
合金平板の製造方法。 2 At−Pb合金粉末が、ウォーターアトマイザー
法により作成した粉末である特許請求の範囲1項記載の
アルミニウムー鉛合金平板の製造方法。[Claims] A method for manufacturing a flat plate by extrusion from an At-Pb alloy powder containing IPb6 to 20, comprising: (a) a conduit is formed by a driving wall surface and a fixed wall surface having a smaller area; Using an extrusion device in which the rear end of the pipe in the driving direction is substantially closed, ω) Continuously supplying rapidly solidified At-Pb alloy powder from the front end of the pipe, (c) The alloy powder is continuously fed into the pipe by the frictional force of the driving wall surface toward an extrusion die provided at the rear end of the pipe, and is continuously extruded into a plate by applying an extrusion force. ((1) The heat generated by the friction and processing in the tube and the extrusion force cause the A7 alloy powder to be metallurgically bonded, and a large amount of PB dissolved in solid solution during rapid solidification is finely precipitated and dispersed in the A7. 2. The method for manufacturing an aluminum-lead alloy flat plate according to claim 1, wherein the At-Pb alloy powder is a powder produced by a water atomizer method.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP132078A JPS596722B2 (en) | 1978-01-09 | 1978-01-09 | Manufacturing method of aluminum↓-lead alloy flat plate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP132078A JPS596722B2 (en) | 1978-01-09 | 1978-01-09 | Manufacturing method of aluminum↓-lead alloy flat plate |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5494465A JPS5494465A (en) | 1979-07-26 |
JPS596722B2 true JPS596722B2 (en) | 1984-02-14 |
Family
ID=11498190
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP132078A Expired JPS596722B2 (en) | 1978-01-09 | 1978-01-09 | Manufacturing method of aluminum↓-lead alloy flat plate |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS596722B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4361629A (en) * | 1980-07-11 | 1982-11-30 | Daido Metal Company Ltd. | Bearing material and method of producing same |
-
1978
- 1978-01-09 JP JP132078A patent/JPS596722B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5494465A (en) | 1979-07-26 |
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