JPH02179350A - Manufacture of fiber reinforced metallic member - Google Patents
Manufacture of fiber reinforced metallic memberInfo
- Publication number
- JPH02179350A JPH02179350A JP33342688A JP33342688A JPH02179350A JP H02179350 A JPH02179350 A JP H02179350A JP 33342688 A JP33342688 A JP 33342688A JP 33342688 A JP33342688 A JP 33342688A JP H02179350 A JPH02179350 A JP H02179350A
- Authority
- JP
- Japan
- Prior art keywords
- pressurizing
- molten metal
- right angle
- punch
- aggregate
- 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
- 239000000835 fiber Substances 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 229910052751 metal Inorganic materials 0.000 claims abstract description 46
- 239000002184 metal Substances 0.000 claims abstract description 46
- 239000011159 matrix material Substances 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000003825 pressing Methods 0.000 claims description 8
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 abstract 2
- 229910052799 carbon Inorganic materials 0.000 abstract 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical class [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 11
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 238000005242 forging Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
Ａ９発明の目的
（１）産業上の利用分野
本発明は、強化材として短繊維を用いた繊維強化金属部
材の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION A9 Object of the Invention (1) Field of Industrial Application The present invention relates to a method for producing a fiber-reinforced metal member using short fibers as a reinforcing material.
（２）従来の技術
従来、この種金属部材を製造する場合は、短繊維より繊
維成形体を成形し、次いでその繊維成形体を用いて加圧
鋳造法を適用する、といった手法が採用されている。(2) Conventional technology Conventionally, when manufacturing this type of metal member, a method has been adopted in which a fiber molded body is formed from short fibers, and then a pressure casting method is applied using the fiber molded body. There is.
（３）発明が解決しようとする課題
しかしながら前記手法によると、金属部材における繊維
体積率（ｖｒ）および形状が繊維成形体によって決めら
れるので、それらの自由度が乏しく、また短繊維を一方
向に配向させることができないという問題がある。(3) Problems to be Solved by the Invention However, according to the above-mentioned method, the fiber volume ratio (vr) and shape of the metal member are determined by the fiber molded body, so there is little flexibility in these matters, and the short fibers cannot be oriented in one direction. There is a problem in that it cannot be oriented.
本発明は前記問題を解決することのできる前記製造方法
を提供することを目的とする。An object of the present invention is to provide the aforementioned manufacturing method that can solve the aforementioned problems.
Ｂ１発明の構成
（１） 課題を解決するための手段
本発明は、金型のキャビティに短繊維の集合体を設置し
た後前記キャビティにマトリックスの溶湯を注入する工
程と、前記溶湯を第１の方向から緩徐に加圧して前記集
合体に完全に含浸させる工程と、前記溶湯を前記第１の
方向および該第１の方向に対し略直交する第２の方向か
ら急速に加圧して形状成形を行う工程と、前記溶湯に対
する第１および第２の方向からの加圧力を一定に保持す
る工程とを順次行うことを特徴とする。B1 Structure of the Invention (1) Means for Solving the Problem The present invention includes a step of placing a short fiber aggregate in a mold cavity and then injecting a matrix molten metal into the cavity, and pouring the molten metal into a first mold. a step of slowly applying pressure in a direction to completely impregnate the aggregate; and a step of rapidly applying pressure in the first direction and a second direction substantially perpendicular to the first direction to shape the molten metal. and a step of maintaining constant pressure applied to the molten metal from the first and second directions are sequentially performed.
（２）作 用
前記のように当初溶湯を緩徐に加圧するので、短繊維間
への溶湯の浸入が確実に行われ、その後金属部材の形状
成形を行うので、その段階で金属部材の繊維体積率およ
び形状が決定される。この場合、形状成形に先立って、
溶湯を集合体に完全に含浸させるので部材に割れを生じ
ることがない。(2) Function As mentioned above, the molten metal is pressurized slowly at first, so that the molten metal is surely infiltrated between the short fibers, and then the shape of the metal member is formed, so at that stage the fiber volume of the metal member is The rate and shape are determined. In this case, prior to shape forming,
Since the aggregate is completely impregnated with the molten metal, no cracks occur in the member.
また短繊維は加圧方向に対し直角に配向する現象を呈す
るので、短繊維に互に略直交する第１および第２の方向
からの加圧力を付与することによって短繊維を一方向に
配向させた金属部材が得られる。Furthermore, since short fibers exhibit a phenomenon of being oriented at right angles to the direction of pressure, applying pressure to the short fibers from first and second directions that are substantially orthogonal to each other can orient the short fibers in one direction. A metal member is obtained.
さらに形状成形後、第１および第２の方向からの加圧力
を一定に保持することによって、気孔の発生が防止され
、同時に鍛造効果が得られ、これによりマトリックスの
金属組織の緻密化および短繊維に対する密着性の向上が
図られる。Furthermore, by keeping the pressing force from the first and second directions constant after shape forming, the generation of pores is prevented and at the same time a forging effect is obtained, which results in the densification of the metal structure of the matrix and short fibers. Improved adhesion to.
（３）実施例
第１図は直方体状繊維強化金属部材ｌを示し、その金属
部材ｌは、マトリックスおよび短繊維よりなる複合部１
ａと、マトリックスのみからなる単体部１ｂとより構成
される。マトリックスとしてはアルミニウム合金（ＪＩ
Ｓ ＡＣ２Ｂ系合金）が用いられ、また短繊維として
は炭化ケイ素ウィスカＷが用いられている。その炭化ケ
イ素ウィスカＷは一方向、図示例では金属部材ｌの長手
方向に配向している。(3) Example FIG. 1 shows a rectangular parallelepiped fiber-reinforced metal member l, which has a composite part 1 made of a matrix and short fibers.
a, and a single part 1b consisting only of a matrix. The matrix is aluminum alloy (JI
AC2B alloy) is used, and silicon carbide whiskers W are used as the short fibers. The silicon carbide whiskers W are oriented in one direction, in the illustrated example, in the longitudinal direction of the metal member l.
以下、第２〜第４図により前記金属部材ｌの製造方法に
ついて説明する。Hereinafter, a method for manufacturing the metal member 1 will be explained with reference to FIGS. 2 to 4.
金型２としては、金型本体３に、上下方向に摺動する上
部加圧バンチ４と、その上部加圧バンチ４の下方におい
て左右方向に摺動する一対の第１゜第２側部加圧パンチ
５．．５ｔとを備えたものが用いられる。The mold 2 includes a mold main body 3, an upper presser bunch 4 that slides in the vertical direction, and a pair of first and second side pressers that slide in the left-right direction below the upper presser bunch 4. Pressure punch5. ．． 5t is used.
先ず、第２図（ａ）に示すように、金型２を約３６０′
Ｃに加熱し、第１．第２側部加圧パンチ５．。First, as shown in FIG. 2(a), the mold 2 is heated approximately 360'
Heat to C and heat to 1. Second side pressure punch5. .
５１により画成されたキャビテイ６底部に約７００°Ｃ
に加熱された炭化ケイ素ウィスカＷの集合体７を設置す
る。この集合体７の繊維体積率（■ｆ）は約１５％であ
り、また炭化ケイ素ウィスカＷが容易にばらけるように
バインダ等は用いられていない。Approximately 700°C at the bottom of cavity 6 defined by 51
An aggregate 7 of silicon carbide whiskers W heated to a temperature is placed. The fiber volume fraction (■f) of this aggregate 7 is about 15%, and no binder or the like is used so that the silicon carbide whiskers W can be easily separated.
その後、キャビティ６に７６０〜７８０ ”Ｃのアルミ
ニウム合金マトリックスの溶湯８を、それの一部が上部
加圧バンチ４の摺動孔９内に存するように注入する。Thereafter, a molten metal 8 of aluminum alloy matrix of 760-780'' C is injected into the cavity 6 such that a portion of it resides in the sliding hole 9 of the upper pressurized bunch 4.
第２図（ロ）、第３図線Ｃｌ１ｄｌ で示すように第１
、第２側部加圧パンチ５＋、５ｚを不動に保った状態に
て、第３図線ａ１．ｂ＋ で示すように上部加圧バンチ
４を約２０ｍ／ｓｅｃの低速度で下降させ、溶湯８を緩
徐に加圧して集合体７に完全に含浸させる。このときの
溶湯８に対する加圧力は約３００ｋｇ／ｃｊである。こ
のように溶湯８を緩徐に加圧すると、その溶湯を炭化ケ
イ素つィスカＷ間へ確実に浸入させることができる。As shown by the line Cl1dl in Figure 2 (b) and Figure 3, the first
, while keeping the second side pressure punches 5+, 5z stationary, the third diagram line a1. As shown by b+, the upper pressing bunch 4 is lowered at a low speed of about 20 m/sec, and the molten metal 8 is slowly pressurized to completely impregnate the aggregate 7. At this time, the pressure applied to the molten metal 8 is approximately 300 kg/cj. By slowly pressurizing the molten metal 8 in this manner, the molten metal can be reliably infiltrated between the silicon carbide whiskers W.
第２図（Ｃ）、第３図線ａ！＋ ｂ！で示すように上
部加圧バンチ４により溶湯８を急速に加圧して、その溶
湯に対する加圧力を約７００ ｋｇ／ｃｄに上昇させる
。上部加圧パンチ４による急速加圧開始直後、第３図線
Ｃ＊ｒ ｄｌで示すように、第１．第２側部加圧バン
チ５＋、５ｔを互に接近する方向に摺動させて、溶湯８
を７００ｋｇ／ｃ−を上回る加圧力を以て急速に加圧し
、これにより形状成形を完了する。Figure 2 (C), Figure 3 line a! +b! As shown in , the molten metal 8 is rapidly pressurized by the upper pressurizing bunch 4, and the pressure applied to the molten metal is increased to about 700 kg/cd. Immediately after the start of rapid pressure application by the upper pressure punch 4, as shown by the line C*r dl in the third diagram, the first. The second side pressure bunches 5+ and 5t are slid in the direction toward each other, and the molten metal 8
is rapidly pressurized with a pressure exceeding 700 kg/c-, thereby completing the shape forming.
この形状成形過程にて、炭化ケイ素ウィスカＷは、第４
図に示すように当初上部加圧パンチ４の加圧力Ｐ１を受
けて加圧方向に対し直角に、且つ二次元平面内でランダ
ムに配向する０次いで第１゜第２側部加圧パンチ５１，
５！の加圧力Ｐ８を受けて炭化ケイ素ウィスカＷのうち
、加圧方向に対し直角のものはそのままの状態に維持さ
れ、一方、加圧方向に対し直角でないものは直角となる
ように配向し、これにより炭化ケイ素ウィスカＷが一方
向に配向する。In this shape forming process, the silicon carbide whiskers W are
As shown in the figure, initially receiving the pressurizing force P1 of the upper pressurizing punch 4, the second side pressurizing punch 51 is oriented perpendicularly to the pressurizing direction and randomly within a two-dimensional plane.
5! Among the silicon carbide whiskers W, those perpendicular to the pressurizing direction are maintained as they are, while those that are not perpendicular to the pressurizing direction are oriented so as to be perpendicular to the pressurizing direction. As a result, silicon carbide whiskers W are oriented in one direction.
また、この形状成形過程にて金属部材１の繊維体積率が
決定されて、それは約２０％となる。この場合、形状成
形に先立って、溶湯８を集合体７に完全に含浸させるの
で、金属部材１に割れを生じることがない。In addition, the fiber volume fraction of the metal member 1 is determined during this shape forming process, and is approximately 20%. In this case, since the aggregate 7 is completely impregnated with the molten metal 8 prior to shaping, the metal member 1 will not be cracked.
第３図線ａ３＊ｂ３および線Ｃ３＋ｄ３で示すように、
溶湯８に対する上部加圧パンチ４および第１．第２側部
加圧バンチ５＋、５ｇの加圧力を高圧下一定に保持して
、気孔の発生を防止し、同時に鍛造効果を得る。これに
よりマトリックスの金属組織の緻密化および炭化ケイ素
ウィスカＷに対する密着性の向上が図られ、また凝固完
了前後に過飽和水素を含む液相または固相からの水素の
析出により生成する直径５〜２０μｍの２次的気孔の発
生が抑制される。As shown by line a3*b3 and line C3+d3 in Figure 3,
The upper pressure punch 4 and the first punch against the molten metal 8. The pressing force of the second side pressing bunch 5+, 5g is kept constant under high pressure to prevent the generation of pores and at the same time obtain a forging effect. This densifies the metal structure of the matrix and improves its adhesion to the silicon carbide whiskers W. In addition, it is possible to densify the metal structure of the matrix and improve its adhesion to the silicon carbide whiskers W. In addition, the metal structure of the matrix is densified and the adhesion to the silicon carbide whiskers W is improved. Generation of secondary pores is suppressed.
なお、第３図線ａ４で示すように、溶湯７の変形能を促
進するために背圧負荷として上部加圧パンチ４を、定圧
保持に先立って減圧するように制御してもよい、第３図
線ｂａ、ｄｎは前記線ａ４に対応する。Note that, as shown by line a4 in the third diagram, the upper pressurizing punch 4 may be controlled to reduce the pressure before maintaining the constant pressure as a back pressure load in order to promote the deformability of the molten metal 7. The diagram lines ba and dn correspond to the line a4.
本発明は、内燃機関用コンロッド、ピストン、ピストン
ピン等の構造部材、履帯等各種部材の製造に適用され、
また前記実施例の部分強化に限らず、全体強化をも行う
ことができることは勿論である。さらに、短繊維の配向
方向制御に当り、溶湯を斜め方向から加圧することもあ
る。The present invention is applied to the manufacture of structural members such as connecting rods, pistons, and piston pins for internal combustion engines, and various members such as tracks.
Moreover, it is of course possible to perform not only partial reinforcement as in the above embodiments but also total reinforcement. Furthermore, in order to control the orientation direction of the short fibers, the molten metal may be pressurized from an oblique direction.
Ｃ１発明の効果
本発明によれば、繊維強化金属部材における繊維体積率
および形状の自由度を増すことができ、また短繊維を一
方向に配向させた高品質な繊維強化金属部材を得ること
ができる。C1 Effects of the Invention According to the present invention, it is possible to increase the fiber volume fraction and the degree of freedom of shape in a fiber-reinforced metal member, and it is also possible to obtain a high-quality fiber-reinforced metal member in which short fibers are oriented in one direction. can.
第１図は繊維強化金属部材の斜視図、第２図は製造工程
説明図、第３図は製造工程における上部加圧パンチ、第
１．第２側部加圧パンチの動作過程を示すグラフ、第４
図は繊維の配向状態を示す説明図である。FIG. 1 is a perspective view of a fiber-reinforced metal member, FIG. 2 is an explanatory diagram of the manufacturing process, and FIG. 3 is an upper pressure punch in the manufacturing process. Graph showing the operation process of the second side pressure punch, 4th
The figure is an explanatory diagram showing the orientation state of fibers.
Claims (1)
ャビティにマトリックスの溶湯を注入する工程と、前記
溶湯を第１の方向から緩徐に加圧して前記集合体に完全
に含浸させる工程と、前記溶湯を前記第１の方向および
該第１の方向に対し略直交する第２の方向から急速に加
圧して形状成形を行う工程と、前記溶湯に対する第１お
よび第２の方向からの加圧力を一定に保持する工程とを
順次行うことを特徴とする繊維強化金属部材の製造方法
。a step of placing a short fiber aggregate in a mold cavity and then injecting a matrix molten metal into the cavity; a step of slowly pressurizing the molten metal from a first direction to completely impregnate the aggregate; A step of rapidly pressurizing the molten metal from the first direction and a second direction substantially perpendicular to the first direction to shape the molten metal, and applying pressure to the molten metal from the first and second directions. 1. A method for manufacturing a fiber-reinforced metal member, comprising sequentially carrying out the steps of maintaining constant .
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33342688A JPH02179350A (en) | 1988-12-29 | 1988-12-29 | Manufacture of fiber reinforced metallic member |
| US07/429,839 US5198167A (en) | 1988-10-31 | 1989-10-31 | Process for producing fiber molding for fiber-reinforced composite materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33342688A JPH02179350A (en) | 1988-12-29 | 1988-12-29 | Manufacture of fiber reinforced metallic member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02179350A true JPH02179350A (en) | 1990-07-12 |
Family
ID=18265979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33342688A Pending JPH02179350A (en) | 1988-10-31 | 1988-12-29 | Manufacture of fiber reinforced metallic member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02179350A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5335712A (en) * | 1989-02-15 | 1994-08-09 | Technical Ceramics Laboratories, Inc. | Shaped bodies containing short inorganic fibers or whiskers and methods of forming such bodies |
-
1988
- 1988-12-29 JP JP33342688A patent/JPH02179350A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5335712A (en) * | 1989-02-15 | 1994-08-09 | Technical Ceramics Laboratories, Inc. | Shaped bodies containing short inorganic fibers or whiskers and methods of forming such bodies |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR920003685B1 (en) | Method of squeeze rorming metal articles | |
| US5198167A (en) | Process for producing fiber molding for fiber-reinforced composite materials | |
| JPS59100236A (en) | Production of fiber reinforced composite member | |
| JPH02179350A (en) | Manufacture of fiber reinforced metallic member | |
| JPH0344432A (en) | Manufacture of fiber reinforced metallic composite material | |
| JPS627825A (en) | Manufacture of preform of metal base composite material | |
| JPH0547304B2 (en) | ||
| JPH0429724B2 (en) | ||
| JPS60131948A (en) | Fiber reinforced composite metallic material | |
| JPS62199739A (en) | Production of fibrous formed body for fiber reinforced composite material | |
| JP4291705B2 (en) | Metal composite forming method | |
| JP2747696B2 (en) | Manufacturing method of preform for composite material | |
| JPS63278661A (en) | Production of aluminum product having reinforced composite part | |
| JPS62227568A (en) | Production of combined body of fiber reinforced complex and metal | |
| JPS62238039A (en) | Manufacture of fiber reinforced composite member | |
| JPS6160257A (en) | Production of composite metallic material | |
| JP2791897B2 (en) | Method for producing molded article for fiber reinforced metal composite material | |
| JPS62127159A (en) | Production of fiber reinforced metallic member | |
| JPH10281002A (en) | Metallic base composite reinforcing piston for internal combustion engine and manufacture therefor | |
| JPS59220273A (en) | Production of fiber-combined casting member | |
| JPS60210350A (en) | Production of fiber reinforced composite material | |
| JPH0533293B2 (en) | ||
| JPH02301533A (en) | Manufacture of composite material | |
| JPH0470372B2 (en) | ||
| JPS5827023B2 (en) | Manufacturing method of fiber reinforced composite member |