JPH0364582B2 - - Google Patents
Info
- Publication number
- JPH0364582B2 JPH0364582B2 JP20325686A JP20325686A JPH0364582B2 JP H0364582 B2 JPH0364582 B2 JP H0364582B2 JP 20325686 A JP20325686 A JP 20325686A JP 20325686 A JP20325686 A JP 20325686A JP H0364582 B2 JPH0364582 B2 JP H0364582B2
- Authority
- JP
- Japan
- Prior art keywords
- fibers
- granular
- fiber
- content
- particle size
- 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
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- 239000000835 fiber Substances 0.000 claims description 97
- 239000002245 particle Substances 0.000 claims description 24
- 239000000919 ceramic Substances 0.000 claims description 11
- 229910001234 light alloy Inorganic materials 0.000 claims description 9
- 238000007514 turning Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000003754 machining Methods 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000007664 blowing Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 229910000861 Mg alloy Inorganic materials 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000009661 fatigue test Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Description
Ａ 発明の目的
(1) 産業上の利用分野
本発明は少なくとも一部をセラミツク繊維によ
り強化した繊維強化軽合金部材に関する。
(2) 従来の技術
従来、軽合金製部材に対する強化用無機繊維と
しては、例えば金属繊維、セラミツク繊維等が用
いられているが、その性能、生産性、コスト等を
考慮すると、一般に断熱材として市販されている
セラミツク繊維が有利である。このセラミツク繊
維を製造する場合には、最も効率的で安価な方法
としてブローイング法が採用されており、この方
法は繊維原料を溶融した後、それを高速エアによ
りブローイングして繊維化するもので、チツプ状
繊維を得る上に非常に優れた方法であるが、ブロ
ーイング時溶融原料が粒状になり、その後繊維化
されるため、得られた繊維は一部に粒状部を有す
る形状となる。これら粒状部はブランケツト作製
時または繊維成形体成形時脱落してブランケツト
または繊維成形体中に粒状繊維（一般にシヨツト
と称される）として含有されることとなり、この
粒状繊維は一般に50重量％以上含有されている。
(3) 発明が解決しようとする問題点
本発明者等は、軽合金部材として内燃機関用ピ
ストンを選定し、そのトツプランド部およびリン
グ地帯を前記セラミツク繊維により強化した場合
に上記粒状繊維が与える影響について種々検討し
たところ下記のような問題のあることを究明し
た。
即ち、リング溝の旋削加工において、粒状繊維
はバイトとの接触により脆性破壊を惹起するた
め、その旋削面は平滑ではなく、ぎざぎざの凹凸
粗面となり、大きな切欠きをもつこととなるの
で、疲労起点になり易い。この切欠き効果は粒状
繊維の粒度および含有量と近密な相関関係を有
し、例えば、粒度が100メツシユ以下である第８
図斜線領域においては繊維強化部の疲れ強さが著
しく低下する。この傾向は繊維直径の大小、繊維
量の多少によつてはあまり影響されない。またリ
ング溝旋削加工時バイト刃先が粒度の粗い粒状繊
維に断続的に接触すると旋削抵抗が断続的に増
し、その結果バイト刃先の摩耗が激しく、繊維強
化部の被削性が悪くなり、リング溝加工精度が低
下する。さらに粒度の粗い粒状繊維は脱落し易い
ので、その脱落した粒状繊維により相手材である
シリンダスリーブの摩耗が促進される。
本発明は上記に鑑み、セラミツク繊維に含まれ
る粒状繊維の粒度及びその含有量を調整して疲れ
強さ、加工精度及び摺動特性の優れた前記繊維強
化軽合金部材を提供することを目的とする。
Ｂ 発明の構成
(1) 課題を解決するための手段
上記目的を達成するために本発明は、少なくと
も一部をセラミツク繊維により強化した繊維強化
軽合金部材において、前記セラミツク繊維に含ま
れる粒状繊維の全含有量を使用繊維量に対して
34.0重量％以下に設定し、また粒度が100メツシ
ユ以下の前記粒状繊維の含有量を前記使用繊維量
に対して10.0重量％以下に設定したことを特徴と
する。
(2) 作用
前記のように粒状繊維の粒度およびその含有量
を調整することにより、粒状繊維に起因する切欠
き効果を抑制して疲れ強さを向上させ、また被削
性を良好にして優れた加工精度を有し、さらに粒
度の粗い粒状繊維の脱落を回避して優れた摺動特
性を有する軽合金部材を提供することができる。
(3) 実施例
以下、本発明の一実施例について説明する。
〔実施例〕
セラミツク繊維として下記の性状を有するもの
を使用した。
化学成分：Al2O3 47.3重量％
SiO2 52.3重量％
その他 0.36重量％
繊維長：短繊維〜250mm
平均繊維径：2.8μ
融 点：1760℃
最高使用温度：1260℃
上記繊維よりなるブラケツトを用いて、外形68
mm、内径54mm、厚さ20mmで、かさ密度0.2ｇ／c.c.
の環状繊維成形体を作製した。この成形体の使用
繊維量に対する全粒状繊維含有量は53.0重量％、
また粒度が100メツシユを上回る粒状繊維含有量
ｘは使用繊維量に対して33.0重量％、さらに粒度
が100メツシユ以下の粒状繊維含有量ｙは使用繊
維量に対して19.7重量％、さらにまたｙ／ｘは
59.6であつた。この成形体をＡとする。こゝで粒
度100メツシユ以下とは、粒径149μｍ以上のもの
が該当する。
上記ブランケツトに加振および湿式法からなる
粒大粒状繊維除去処理を施して粒状繊維含有量を
減少させ、粒状繊維含有量を異にする複数のブラ
ンケツトを作製し、これらブランケツトから三種
のものを選定して前記と同一形状で、且つ同一か
さ密度の環状繊維成形体Ｂ〜Ｄを作製した。
各環状繊維成形体Ａ〜Ｄの使用繊維量に対する
全粒状繊維含有量等をまとめれば下表の通りであ
る。
A. Object of the Invention (1) Industrial Application Field The present invention relates to a fiber-reinforced light alloy member that is at least partially reinforced with ceramic fibers. (2) Conventional technology Conventionally, metal fibers, ceramic fibers, etc. have been used as reinforcing inorganic fibers for light alloy members, but considering their performance, productivity, cost, etc., they are generally used as insulation materials. Commercially available ceramic fibers are preferred. When producing ceramic fibers, the blowing method is used as the most efficient and inexpensive method. This method involves melting the fiber raw material and then blowing it with high-speed air to make it into fibers. Although this is an excellent method for obtaining chip-like fibers, the molten raw material becomes granular during blowing and is then turned into fibers, so the resulting fibers have a shape that partially has granular parts. These granular parts fall off during blanket production or fiber molding and are contained in the blanket or fiber molding as granular fibers (generally called shots), and these granular fibers generally contain 50% by weight or more. has been done. (3) Problems to be Solved by the Invention The present inventors selected a piston for an internal combustion engine as a light alloy member, and investigated the influence of the above-mentioned granular fibers when the top land portion and ring zone were reinforced with the above-mentioned ceramic fibers. After conducting various studies, we discovered the following problems. In other words, when turning a ring groove, the granular fibers cause brittle fracture when they come into contact with the cutting tool, so the turned surface is not smooth, but has a jagged rough surface with large notches, which reduces fatigue. It can be a good starting point. This notch effect has a close correlation with the particle size and content of granular fibers, for example,
In the shaded area in the figure, the fatigue strength of the fiber-reinforced portion is significantly reduced. This tendency is not affected much by the size of the fiber diameter or the amount of fiber. In addition, when turning the ring groove, if the tip of the cutting tool intermittently comes into contact with coarse granular fibers, the turning resistance increases intermittently, resulting in severe wear of the cutting edge and poor machinability of the fiber-reinforced part. Machining accuracy decreases. Further, coarse granular fibers tend to fall off, and the granular fibers that fall off accelerate wear of the cylinder sleeve, which is the mating material. In view of the above, an object of the present invention is to provide a fiber-reinforced light alloy member with excellent fatigue strength, processing accuracy, and sliding properties by adjusting the particle size and content of granular fibers contained in ceramic fibers. do. B. Structure of the Invention (1) Means for Solving the Problems In order to achieve the above object, the present invention provides a fiber-reinforced light alloy member at least partially reinforced with ceramic fibers, in which granular fibers contained in the ceramic fibers are The total content is based on the amount of fiber used.
The content of the granular fibers having a particle size of 100 mesh or less is set to 10.0% by weight or less based on the amount of fiber used. (2) Effect By adjusting the particle size and content of the granular fibers as described above, the notch effect caused by the granular fibers can be suppressed and fatigue strength can be improved, and machinability can be improved to achieve excellent results. It is possible to provide a light alloy member that has high processing accuracy, and also has excellent sliding characteristics by avoiding falling off of coarse granular fibers. (3) Example An example of the present invention will be described below. [Example] Ceramic fibers having the following properties were used. Chemical composition: Al 2 O 3 47.3% by weight SiO 2 52.3% by weight Others 0.36% by weight Fiber length: Short fiber ~ 250mm Average fiber diameter: 2.8μ Melting point: 1760℃ Maximum operating temperature: 1260℃ Using a bracket made of the above fibers External size 68
mm, inner diameter 54mm, thickness 20mm, bulk density 0.2g/cc
A circular fiber molded body was produced. The total granular fiber content of this molded body is 53.0% by weight based on the amount of fiber used.
In addition, the content x of granular fibers with a particle size of more than 100 mesh is 33.0% by weight based on the amount of fiber used, and the content y of granular fibers with a particle size of 100 mesh or less is 19.7% by weight based on the amount of fiber used, and furthermore, y/ x is
It was 59.6. This molded body is designated as A. Here, the particle size of 100 mesh or less refers to particles with a particle size of 149 μm or more. The above blanket was subjected to a treatment for removing large granular fibers using vibration and a wet method to reduce the granular fiber content, and a plurality of blankets with different granular fiber contents were produced, and three types of blankets were selected from these blankets. Annular fiber molded bodies B to D having the same shape and the same bulk density as above were produced. The total granular fiber content and the like relative to the amount of fiber used in each of the annular fiber molded bodies A to D are summarized in the table below.
【表】
第２図は各環状繊維成形体Ａ〜Ｄにおける粒状
繊維の粒度に対する含有量の分布を示したもの
で、粒状繊維含有量の多いもの程度然にその分布
が広がるため粒度の粗大な粒状繊維の含有量も多
くなる。環状繊維成形体Ａにおいては粒度が100
〜150メツシユの粒状繊維が最も多く、粗大粒状
繊維除去処理を施し、またその処理の程度を増
す、即ち環状繊維成形体Ｂ〜Ｃに至るに従い粗大
な粒状繊維が除去されて、その分布幅が狭まると
同時に粒度150〜200メツシユの微細な粒状繊維が
最も多くなる傾向にある。上記粗大粒状繊維除去
処理をさらに行つても粒度100メツシユ以下の粒
状繊維を完全に除去することは困難であり、第３
図に示すように粒度100メツシユ以下の粒状繊維
の減少は全粒状繊維含有量の減少となる。
前記各環状繊維成形体Ａ〜Ｄを順次ピストン鋳
造用の鋳型内に設置し、マトリツクスＭとしてマ
グネシウム合金を用いて高圧凝固鋳造法により第
１図に示すトツプランド部Ｌおよびリング地帯Ｒ
（但し、油かきリング溝部を除く。）を繊維強化し
た四種類の内燃機関用ピストンA′〜D′を鋳造し
た。この種ピストンは、トツプランド部Ｌおよび
リング地帯Ｒが繊維強化されているので、それら
の高温強度が高く、またトツプランド部Ｌに囲繞
されるヘツド主体部がマグネシウム合金より構成
されているので放熱性が良好であるといつた利点
を有する。
鋳造後各ピストンA′〜D′に旋削加工等の機械
加工を施して第１、第２リング溝R1，R2、油か
きリング溝Ｏ等を形成した後、各ピストンA′〜
D′のリング溝加工精度を比較したところ第４、
第５図の結果が得られた。
第４図はリング溝幅精度を示し、ピストンB′，
C′，D′が許容される精度範囲に属し、ピストン
A′は不適当であつた。
また第５図はリング溝たおれを示し、ピストン
C′，D′が許容される精度範囲に属しピストンA′，
B′は不適当であつた。
この場合、リング溝たおれとは、第１リング溝
R1の底面に、その開口縁より20mmだけ突出する
ような長さを持つた角棒３の一端を当接した状態
において、或基準面よりリング溝開口縁での角棒
３上面までの距離ａと、前記基準面より角棒３の
先端上縁までの距離ｂとの差を意味する。また、
第４、第５図において、旋削長さとは、その長さ
分旋削加工を行つた工具を用いてリング溝を旋削
加工した場合を意味する。
第４、第５図から明らかなように、リング溝幅
精度およびリング溝たおれの両方の許容精度範囲
に属するピストンC′，D′が加工精度の面から最適
であり、これはピストンC′，D′において用いられ
た環状繊維成形体の全粒状繊維含有量が26.4、
16.4重量％と低く、また粒度100メツシユ以下の
粒状繊維含有量も7.0、0.8重量％と低いので、リ
ング溝加工時にバイト刃先に作用する断続的な旋
削抵抗が軽減され、その結果バイト刃先の摩耗を
低減して繊維強化部の被削性が著しく向上するこ
とに起因する。これはリング幅（軸方向高さ）
1.5mm以下において、その効果が大きい。
各ピストンA′〜D′に疲れ試験を行うため、そ
れらの第１リング溝R1に第６図に示す単体疲れ
試験機１のチヤツク２を挟み、ガス圧（最高50
Kg／cm2）相当の負荷を400時間繰返して第１リン
グ溝R1に加え、Ｓ−Ｎ値とばらつきを考慮して
疲労破損確率を求めたところ第７図の結果が得ら
れた。
第７図から明らかなように、粒度100メツシユ
以下の粒状繊維含有量が10.0重量％以下であるピ
ストンC′，D′は十分な疲れ強さを有するが、粒度
100メツシユ以下の粒状繊維量が10.0重量％を越
えると粒度の粗い粒状繊維が増加して、切欠き効
果が著しく増大するため疲れ強さが減少し、実用
上信頼性にかけることが判明した。
また摺動特性について調べたところ、ピストン
C′，D′については粒度が100メツシユ以下の粒状
繊維含有量が少ないので、その脱落も抑制され、
これによりシリンダスリーブの摩耗量が減少し、
ピストンC′，D′は優れた摺動特性を有することが
判明した。
さらに各種環状繊維成形体を用いてピストンを
鋳造し、それらピストンについて前記同様の比較
等を行つたところ、疲れ強さ、加工精度および摺
動特性を向上させるためには、第２図斜線領域の
ように、全粒状繊維含有量が34.0重量％以下、粒
度100メツシユを上回る粒状繊維含有量ｘが24.0
重量％以下、粒度100メツシユ以下の粒状繊維含
有量ｙが10.0重量％以下およびｙ／ｘが41.7以下
の各条件を満たす必要のあることが確認された。
Ｃ 発明の効果
本発明によれば、粒状繊維の粒度およびその含
有量を前記のように調整することにより、粒状繊
維に起因する切欠き効果を抑制して疲れ強さを向
上させ、また被削性を良好にして優れた加工精度
を有し、さらに粒度の粗い粒状繊維の脱落を回避
して優れた摺動特性を有する軽合金部材を提供す
ることができる。[Table] Figure 2 shows the content distribution of granular fibers with respect to particle size in each of the annular fiber molded bodies A to D. The content of granular fibers also increases. In the annular fiber molded body A, the particle size is 100
~150 mesh granular fibers are the most numerous, and coarse granular fibers are removed, and as the degree of the treatment increases, that is, as the annular fiber molded bodies B to C are reached, coarse granular fibers are removed and the distribution width increases. As it narrows, fine granular fibers with a particle size of 150 to 200 mesh tend to become the most numerous. Even if the above-mentioned coarse granular fiber removal treatment is further performed, it is difficult to completely remove granular fibers with a particle size of 100 mesh or less.
As shown in the figure, a decrease in granular fibers with a particle size of 100 mesh or less results in a decrease in the total granular fiber content. The annular fiber molded bodies A to D are sequentially placed in a piston casting mold, and a top land portion L and a ring zone R shown in FIG. 1 are formed by high-pressure solidification casting using a magnesium alloy as the matrix M.
Four types of pistons A' to D' for internal combustion engines were cast with fiber-reinforced pistons (excluding the oil scrubbing ring grooves). In this type of piston, the top land portion L and the ring zone R are reinforced with fibers, so they have high high-temperature strength, and the head main body surrounded by the top land portion L is made of magnesium alloy, so it has good heat dissipation. It has the advantage of being good. After casting, each piston A' to D' is subjected to machining such as turning to form the first and second ring grooves R 1 and R 2 , oil ring groove O, etc., and then each piston A' to D' is
Comparing the ring groove machining accuracy of D', the fourth
The results shown in Figure 5 were obtained. Figure 4 shows the ring groove width accuracy, piston B',
C′ and D′ belong to the allowable accuracy range, and the piston
A′ was inappropriate. Figure 5 also shows the ring groove sag, and the piston
C′, D′ are within the permissible accuracy range, and piston A′,
B' was inappropriate. In this case, the ring groove sag means the first ring groove
When one end of the square bar 3 with a length that protrudes 20 mm from the opening edge is in contact with the bottom of R 1 , the distance from a certain reference plane to the top surface of the square bar 3 at the ring groove opening edge It means the difference between a and the distance b from the reference plane to the upper edge of the tip of the square bar 3. Also,
In FIGS. 4 and 5, the turning length refers to the case where the ring groove is turned using a tool that has turned the length. As is clear from Figs. 4 and 5, pistons C' and D', which fall within the allowable accuracy ranges for both ring groove width accuracy and ring groove sag, are optimal from the perspective of machining accuracy; The total granular fiber content of the annular fiber molded body used in D′ was 26.4,
The content of granular fibers with a grain size of 100 mesh or less is as low as 16.4% by weight, and the content of granular fibers with a particle size of 100 mesh or less is also low at 7.0% and 0.8% by weight, which reduces the intermittent turning resistance that acts on the cutting tool tip during ring groove machining, resulting in less wear on the cutting tool tip. This is due to the fact that the machinability of the fiber-reinforced portion is significantly improved by reducing the This is the ring width (axial height)
The effect is large at 1.5 mm or less. In order to conduct a fatigue test on each piston A' to D', the chuck 2 of the single fatigue tester 1 shown in Fig. 6 was inserted into the first ring groove R1 of each piston, and the gas pressure
A load equivalent to Kg/cm 2 ) was repeatedly applied to the first ring groove R 1 for 400 hours, and the probability of fatigue failure was determined taking into account the S-N value and variation, and the results shown in FIG. 7 were obtained. As is clear from Fig. 7, pistons C' and D' in which the content of granular fibers with a particle size of 100 mesh or less is 10.0% by weight or less have sufficient fatigue strength;
It has been found that when the amount of granular fibers of 100 meshes or less exceeds 10.0% by weight, coarse granular fibers increase and the notch effect increases significantly, reducing fatigue strength and impairing practical reliability. In addition, when we investigated the sliding characteristics, we found that the piston
As for C' and D', the content of granular fibers with a particle size of 100 mesh or less is small, so their shedding is suppressed,
This reduces the amount of wear on the cylinder sleeve,
Pistons C' and D' were found to have excellent sliding properties. Furthermore, when pistons were cast using various annular fiber molded bodies and the pistons were compared in the same manner as described above, it was found that in order to improve fatigue strength, machining accuracy, and sliding characteristics, it is necessary to So, the total granular fiber content is 34.0% by weight or less, and the granular fiber content x greater than 100 mesh is 24.0% by weight.
It was confirmed that it is necessary to satisfy the following conditions: the content of granular fibers (y) with a particle size of 100 mesh or less is 10.0% by weight or less, and y/x is 41.7 or less. C Effects of the Invention According to the present invention, by adjusting the particle size and content of the granular fibers as described above, the notch effect caused by the granular fibers is suppressed and fatigue strength is improved, and the fatigue strength of the granular fibers is improved. It is possible to provide a light alloy member having good properties, excellent processing accuracy, and excellent sliding properties by avoiding falling off of coarse granular fibers.
第１図は本発明の一実施例の縦断側面図、第２
図は粒状繊維の粒度と粒状繊維の含有量の関係を
示すグラフ、第３図は全粒状繊維含有量と粒度
100メツシユ以下の粒状繊維含有量の関係を示す
グラフ、第４図はリング溝幅精度において、旋削
長さと誤差の関係を示すグラフ、第５図はリング
溝たおれにおいて、旋削長さと誤差の関係を示す
グラフ、第６図は疲れ試験の説明図、第７図は粒
度100メツシユ以下の粒状繊維含有量と破損確率
の関係を示すグラフ、第８図は粒状繊維の粒度と
応力の関係を示すグラフである。
C′……ピストン、Ｃ……環状繊維成形体、Ｌ…
…トツプランド部、Ｍ……マトリツクス、Ｒ……
リング地帯。
Fig. 1 is a longitudinal cross-sectional side view of one embodiment of the present invention;
The figure is a graph showing the relationship between the particle size of granular fibers and the content of granular fibers, and Figure 3 is a graph showing the relationship between the total granular fiber content and particle size.
A graph showing the relationship between the granular fiber content of 100 mesh or less, Figure 4 is a graph showing the relationship between turning length and error in ring groove width accuracy, and Figure 5 is a graph showing the relationship between turning length and error in ring groove sag. Fig. 6 is an explanatory diagram of the fatigue test, Fig. 7 is a graph showing the relationship between the content of granular fibers with a particle size of 100 mesh or less and probability of failure, and Fig. 8 is a graph showing the relationship between the particle size of granular fibers and stress. It is. C'... Piston, C... Annular fiber molded body, L...
...Totsuprand part, M...matrix, R...
ring zone.
Claims (1)
した繊維強化軽合金部材において、前記セラミツ
ク繊維に含まれる粒状繊維の全含有量を使用繊維
量に対して34.0重量％以下に設定し、また粒度が
100メツシユ以下の前記粒状繊維の含有量を前記
使用繊維量に対して10.0重量％以下に設定したこ
とを特徴とする、繊維強化軽合金部材。1. In a fiber-reinforced light alloy member at least partially reinforced with ceramic fibers, the total content of granular fibers contained in the ceramic fibers is set to 34.0% by weight or less based on the amount of fibers used, and the particle size is
A fiber-reinforced light alloy member, characterized in that the content of the granular fibers of 100 mesh or less is set to 10.0% by weight or less based on the amount of fibers used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20325686A JPS6244543A (en) | 1986-08-29 | 1986-08-29 | Fiber reinforced light alloy member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20325686A JPS6244543A (en) | 1986-08-29 | 1986-08-29 | Fiber reinforced light alloy member |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56094461A Division JPS57210140A (en) | 1981-06-18 | 1981-06-18 | Fiber reinfoced piston for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6244543A JPS6244543A (en) | 1987-02-26 |
| JPH0364582B2 true JPH0364582B2 (en) | 1991-10-07 |
Family
ID=16471010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20325686A Granted JPS6244543A (en) | 1986-08-29 | 1986-08-29 | Fiber reinforced light alloy member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6244543A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57210140A (en) * | 1981-06-18 | 1982-12-23 | Honda Motor Co Ltd | Fiber reinfoced piston for internal combustion engine |
-
1986
- 1986-08-29 JP JP20325686A patent/JPS6244543A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6244543A (en) | 1987-02-26 |
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