JPH01129938A - Composite material and its manufacture - Google Patents
Composite material and its manufactureInfo
- Publication number
- JPH01129938A JPH01129938A JP28725387A JP28725387A JPH01129938A JP H01129938 A JPH01129938 A JP H01129938A JP 28725387 A JP28725387 A JP 28725387A JP 28725387 A JP28725387 A JP 28725387A JP H01129938 A JPH01129938 A JP H01129938A
- Authority
- JP
- Japan
- Prior art keywords
- intermetallic compound
- heat
- fiber
- resistant
- molding
- 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
- 239000002131 composite material Substances 0.000 title claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 229910000765 intermetallic Inorganic materials 0.000 claims abstract description 30
- 238000000465 moulding Methods 0.000 claims abstract description 23
- 239000012210 heat-resistant fiber Substances 0.000 claims abstract description 15
- 239000000843 powder Substances 0.000 claims abstract description 8
- 239000011159 matrix material Substances 0.000 claims abstract description 7
- 238000002844 melting Methods 0.000 claims abstract description 6
- 230000008018 melting Effects 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims description 18
- UQZIWOQVLUASCR-UHFFFAOYSA-N alumane;titanium Chemical compound [AlH3].[Ti] UQZIWOQVLUASCR-UHFFFAOYSA-N 0.000 claims description 15
- 239000002245 particle Substances 0.000 claims description 7
- 238000004898 kneading Methods 0.000 claims description 2
- 239000000835 fiber Substances 0.000 abstract description 11
- 229910021362 Ti-Al intermetallic compound Inorganic materials 0.000 abstract 2
- 238000001354 calcination Methods 0.000 abstract 1
- 238000001746 injection moulding Methods 0.000 description 7
- 230000005484 gravity Effects 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 241000272814 Anser sp. Species 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 239000012779 reinforcing material Substances 0.000 description 2
- 241001474374 Blennius Species 0.000 description 1
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000012300 argon atmosphere Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
Landscapes
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は＠量かつ耐熱性に優れ之焼結した繊維強化金属
間化合物よシなる複合材料及びその製造方法に関し、特
にエンジンバルブ、過給機ローメ、コンプレッサ羽根車
など４００〜１０００℃の温度範囲で使用しつる同複合
材料及びその製造方法に関する。Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a composite material made of a sintered fiber-reinforced intermetallic compound having excellent quantity and heat resistance, and a method for producing the same, particularly for use in engine valves, supercharging, etc. The present invention relates to a composite material for use in the temperature range of 400 to 1000°C, such as machine loams and compressor impellers, and a method for producing the same.
４００℃以上で使用される部品は耐熱性、耐食注文は耐
改化注の点から、比重が７以上の鉄基合金、ニッケル基
合金又はコバルト基合金が主に使用されている。Parts used at temperatures above 400°C are heat resistant, and corrosion-resistant parts are made of iron-based alloys, nickel-based alloys, or cobalt-based alloys with a specific gravity of 7 or more, from the viewpoint of resistance to modification.
ところが近年、省エネルギの観点から機械部品の軽址化
が要請されているが、４００℃以上の高温では比重の小
さいチタン合金（比Ｍ：約４．５）及びアルミニウム合
金（比重：約五２）は強度、耐酸化性などが不十分であ
り便用できない。一方、比重の小さいＡｌ、Ｏ，、Ｓｉ
３Ｎ４ 、 ＳｉＣなどのセラミックスは、耐熱性の
点では金属系に比較して格段と優れているが、靭性が低
く、かつ硬くて機械７＋１１工注が劣るなどの欠点かめ
るため実用性に問題かめる。However, in recent years, there has been a demand for lighter mechanical parts from the perspective of energy conservation, but at high temperatures of 400°C or higher, titanium alloys (ratio M: approximately 4.5) and aluminum alloys (specific gravity: approximately 52) have low specific gravity. ) cannot be used conveniently due to insufficient strength and oxidation resistance. On the other hand, Al, O, Si, which has a small specific gravity
Ceramics such as 3N4 and SiC are significantly superior to metals in terms of heat resistance, but they have drawbacks such as low toughness and hardness, making them inferior to mechanical 7+11 injections, which poses problems for practical use.
また、上記チタン合金やアルミニウム合金と同等の小さ
い比重を示し、それらの合金が使用で＠ない高温でも優
れた耐酸化性、高＠’！！ｆ性金示す合金としてチタン
−アルミニウム系金属間化合物（ＴｉＡｔ、 Ｔｉ、Ａ
ｔ）が刈られているが、このものは非常に脆いため実用
化の例は未だない。In addition, it exhibits a low specific gravity equivalent to the titanium alloys and aluminum alloys mentioned above, and has excellent oxidation resistance even at high temperatures where those alloys cannot be used. ! Titanium-aluminum intermetallic compounds (TiAt, Ti, A
t), but it is extremely fragile and there are no examples of its practical use yet.
本発明は上記技術水準に鑑み、軽量かつ耐熱性に優れた
複合材料及びその製造方法全提供しようとするものであ
る。In view of the above-mentioned state of the art, the present invention aims to provide a composite material that is lightweight and has excellent heat resistance, and a method for manufacturing the same.
本発明は、
（１１チタン−アルミニウム系金属間化合物の母相中に
、耐熱繊維が分散されていることを特徴とする軽量、耐
熱性の焼結繊維強化金属間化合物複合材料及び
（２）平均粒径１０μｍ以下のチタン−アルミニウム系
金属間化合物微粉末、耐熱繊維及び成形助剤を混練して
得られた成形用混合物を１該混合物中の成形助剤の融点
以上の＠度に加熱して所望の形状の金型に充填して所望
の形状の成形体を得、該成形体より成形助剤を除である
。The present invention provides (11) a lightweight, heat-resistant sintered fiber-reinforced intermetallic compound composite material characterized in that heat-resistant fibers are dispersed in the matrix of a titanium-aluminum-based intermetallic compound, and (2) an average A molding mixture obtained by kneading a titanium-aluminum intermetallic compound fine powder with a particle size of 10 μm or less, a heat-resistant fiber, and a molding aid is heated to a temperature higher than the melting point of the molding aid in the mixture. The mixture is filled into a mold having a desired shape to obtain a molded product having a desired shape, and the molding aid is removed from the molded product.
−アルミニウム系金属間化合物としては、比重が４以下
と小嘔＜、シかも４００〜１，０００℃ＴｉＡｔ又は’
Ｉ’１３ｋｔ系金属間化合物は純粋なものに限定される
ものではなく、これらの組成全基本成分とし、例えば化
性などを改善するために他の元素、例えばＭｎ、 Ｖ、
Ｍｏ、 Ｎｂ などを合計１０ｗｔ％以下、添加し
たチタン−アルミニウム系金属間化合物も使用すること
ができる。- As an aluminum-based intermetallic compound, TiAt or '
I'13kt-based intermetallic compounds are not limited to pure ones, but include all of these basic components, and may also contain other elements, such as Mn, V, etc., to improve chemical properties.
A titanium-aluminum intermetallic compound to which Mo, Nb, etc. are added in a total amount of 10 wt% or less can also be used.
このチタン−アルミニウム系金属間化合物そのものは、
複雑形状の部品製造するには通さない娠注の小さなもの
でめるので、これ全母相とする複合材料を製造するに際
しては、流動性をよくするため平均粒径１０μ以下の微
粒子としてチタン−アルミニウム系金属間化合物を使用
すべきである。This titanium-aluminum intermetallic compound itself is
To manufacture parts with complex shapes, it is necessary to use small particles with impermeable particles, so when manufacturing a composite material that uses this as the entire matrix, titanium is used as fine particles with an average particle size of 10μ or less to improve fluidity. Aluminum-based intermetallic compounds should be used.
チタン−アルミニウム系金属間化合物に分散させる強化
材となる耐熱繊維としては、耐熱性の優れたセラミック
ス繊維、合端繊維などであり、例えば８１Ｃウイスカ、
Ｚｒ０１短繊維、 Ａｊ１０３短繊維、 ｋｌ鵞０
３・８１０鵞短穢維、Ｓ１０鵞短繊維、Ｃ短繊維、 ８
１３Ｎ、ウィスカ、 Ｗｌ＃１． Ｂ繊維などがめげら
れる。Heat-resistant fibers that serve as reinforcing materials to be dispersed in the titanium-aluminum intermetallic compound include ceramic fibers with excellent heat resistance, jointed fibers, etc., such as 81C whiskers,
Zr01 short fiber, Aj103 short fiber, kl 0
3.810 goose short fiber, S10 goose short fiber, C short fiber, 8
13N, Whisker, Wl#1. B fibers etc. are damaged.
一般的に強化材となる耐熱繊維としては、直径２〜３０
０μ町長さ１ｏＰ％へ７９鴎のものが適する。Heat-resistant fibers that serve as reinforcing materials generally have a diameter of 2 to 30 mm.
79 seaweed is suitable for 0μ town length 1oP%.
チタン−アルミニウム系金属間化合物と耐熱繊維の配合
割合＃′ｉ＼チタンーアルミニウム系金属間化合物微粉
末と耐熱繊維の混合が容易で、かつ靭性向上効果の点か
ら、前者に対して後者全５〜６０ ｖｏｗ ｔｌｂの範
囲にするのが適している０本発明において使用される成
形助剤は特に限定ちれるものではないが、加熱により流
動性を呈するワックスや有機系樹脂類を使用するのが好
ましい。この使用敏は使用する成形助剤によって異なシ
ー義的に定められないが、例えば成形助剤としてワック
スを用いた場合について述べると、チタン−アルミニウ
ム系金属間化合物微粉末と耐熱繊維の混合物６０ ｖｏ
ｗ％に対しワックス４０ ｖｏｗチ程度である。Blending ratio of titanium-aluminum intermetallic compound and heat-resistant fiber #'i ＼ From the viewpoint of easy mixing of titanium-aluminum intermetallic compound fine powder and heat-resistant fiber and the effect of improving toughness, the latter is 5% compared to the former. The molding aid used in the present invention is not particularly limited, but it is preferable to use a wax or organic resin that becomes fluid when heated. preferable. This usability differs depending on the molding aid used and is not determined in terms of terms, but for example, in the case where wax is used as the molding aid, a mixture of titanium-aluminum intermetallic compound fine powder and heat-resistant fiber 60 vo
The wax content is about 40 vw per w%.
以下、本発明の一実施例を図面を参照して詳述する。第
１図は本発明の焼結繊維強化金属間化合物裂のパルプの
側面図、第２図は第１図のＡ−Ａ矢視図で６９、第３図
は第１図、第２図で示された焼結繊維強化金属間化合物
製パルプの射出成形機の概略図である。Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings. Fig. 1 is a side view of the sintered fiber-reinforced intermetallic compound fiber pulp of the present invention, Fig. 2 is a view taken along the line A-A in Fig. 1, and Fig. 3 is a side view of the pulp of the present invention. 1 is a schematic diagram of the illustrated sintered fiber-reinforced intermetallic pulp injection molding machine; FIG.
第１図、第２図において、１は本発明−実施態様の焼結
繊維強化金属間化合物製パルプを示す。第３図において
、２は前記パルプ１と同じ形状の空洞ｌ１１５３を有す
る金型（通常、炭素鋼製）、４は通路５ｔ−有する金型
（これも通常、炭素鋼ｉｌｌり％６は射出成形機でろり
、７は射出成形機６のシリンダライナー８の中心軸に設
置されているスクリュー、９はシリンダライナー８の周
囲に設けられた加熱コイル％ １０はノズル、１１はチ
タン−アルミニウム系金属間化合物微粉末、耐熱繊維及
び成形助剤よりなる底形用混合物である。In FIGS. 1 and 2, 1 indicates a sintered fiber-reinforced intermetallic compound pulp according to an embodiment of the present invention. In Fig. 3, 2 is a mold (usually made of carbon steel) having a cavity 1153 having the same shape as the pulp 1, 4 is a mold having a passage of 5t (also usually made of carbon steel), and 6 is injection molding. 7 is a screw installed on the central axis of the cylinder liner 8 of the injection molding machine 6, 9 is a heating coil installed around the cylinder liner 8, 10 is a nozzle, and 11 is a titanium-aluminum metal interface. This is a mixture for bottom shapes consisting of fine compound powder, heat-resistant fibers, and molding aids.
上記第３図の射出成形機を使用し、チタン−アルミニウ
ム系金属間化合物としてＴｉ−Ａｔを、耐熱繊維として
ＳｉＣウィスカを、成形助剤としてワックスを用いた場
合について説明する。A case will be described in which the injection molding machine shown in FIG. 3 is used, Ti-At is used as the titanium-aluminum intermetallic compound, SiC whisker is used as the heat-resistant fiber, and wax is used as the molding aid.
Ｔｉ−Ａｔ粉末（平均粒径１０μｍ以下） ： ８１Ｃ
ウイスカを体積チで７０ ： ５０の混合物を作り、該
混合物とワックスとを体積チで６０ ： ４０の割合で
別途混線機で１１０℃に加熱しながら攪拌して成形用混
合物１１を作る。該成形用混合物１１全直径２〜３１ｍ
、長ち５〜４ｍのベレット状にして第３図の射出成形機
６へ図示していない装入口から装填する。Ti-At powder (average particle size 10 μm or less): 81C
A mixture of whiskers is prepared in a ratio of 70:50 by volume, and the mixture and wax are stirred in a ratio of 60:40 in a mixer while being heated to 110° C. to prepare a molding mixture 11. The molding mixture 11 has a total diameter of 2 to 31 m.
The pellet is shaped into a pellet having a length of 5 to 4 m and is loaded into the injection molding machine 6 in FIG. 3 from a charging port (not shown).
射出成形機６へ装填された成形用混合物１１は、加熱コ
イル９でワックスの融点以上の約１２０℃に加熱嘔れな
がら、シリンダライナー８の上部のノズル１０方向に押
し出される。The molding mixture 11 loaded into the injection molding machine 6 is extruded toward the nozzle 10 at the upper part of the cylinder liner 8 while being heated by the heating coil 9 to about 120° C., which is higher than the melting point of the wax.
（第５図はこの状態を示している。）
スクリュー７を一旦、ノズル１０より後退させた後、高
い圧力で前進させると、流動状態になった成形用混合物
１１はノズル１０から金型４の通路５を通シ、金型２の
空洞部３に充填される。(FIG. 5 shows this state.) When the screw 7 is once retracted from the nozzle 10 and then advanced at high pressure, the molding mixture 11 in a fluid state flows from the nozzle 10 to the mold 4. It passes through the passage 5 and fills the cavity 3 of the mold 2.
空洞部３に充填された成形用混合物１１の温度がワック
スの融点以下に下がった時点で％成形用混合物１１、す
なわち射出状態の未焼結パルプ状混合物、を金型２から
暇り出し、該バルブ状混合’＄ｔ−４００℃程度に加熱
してワックスを流し出して脱脂する。When the temperature of the molding mixture 11 filled in the cavity 3 falls below the melting point of the wax, the molding mixture 11, that is, the unsintered pulp-like mixture in the injection state, is ejected from the mold 2 and Bulb-shaped mixture '$t-Heat to about 400°C to pour out wax and degrease.
脱脂したバルブ状混合物をアルゴン雰囲気中で１２５０
℃で焼結すると、第１図、第２図に示した形状の焼ＭＳ
ｉＣ強化’ｒｉＡｔ 製パルプが得られる。The degreased bulb mixture was heated to 1250 °C in an argon atmosphere.
When sintered at ℃, a sintered MS with the shape shown in Figures 1 and 2
An iC-reinforced 'riAt pulp is obtained.
＋１＋ 本発明の焼結繊維強化金属間化合物複合材料
は、母相がチタン−アルミニウム系金属間化合物である
ので比重が軽く、耐酸化性でかつ高温強度に優れ、かつ
耐熱繊維が母相中に分散しているので靭性も優れており
、従来不可能でるつ之高温部品の裏作に有利に使用でき
る。+1+ The sintered fiber-reinforced intermetallic compound composite material of the present invention has a titanium-aluminum intermetallic compound in the matrix, so it has a light specific gravity, is oxidation resistant, has excellent high-temperature strength, and has heat-resistant fibers in the matrix. Since it is dispersed, it has excellent toughness and can be used advantageously for the production of melting high-temperature parts, which was previously impossible.
（２）平均粒径１０μｍ以下のチタン−アルミニウム系
金属間化合物を使用するので耐熱繊維との混合が容易で
め９、かつ成形助剤を使用しているので成形が容易でめ
ジ、複雑形状の焼結繊維強化金属間化合物裏部品の製造
が可能となる。(2) Since it uses a titanium-aluminum intermetallic compound with an average particle size of 10 μm or less, it is easy to mix with heat-resistant fibers9, and because it uses a forming aid, it is easy to mold, making it easy to form shapes and complex shapes. This makes it possible to manufacture sintered fiber-reinforced intermetallic compound back parts.
第１図、第２図は本発明の焼結繊維強化金属間化合物部
品の一例を示すもので、第１図はその側面図、第２図は
第１図のＡ−Ａ矢視図である。ｉｔｇ３図は本発明の焼
結繊維強化金属間化合物製部品の裏遣方法の一工程であ
る射出成形機の概略図でるる。
ハ
第３図1 and 2 show an example of the sintered fiber-reinforced intermetallic compound component of the present invention, FIG. 1 is a side view thereof, and FIG. 2 is a view taken along the line A-A in FIG. 1. . Figure 3 is a schematic diagram of an injection molding machine which is a step in the lining method for parts made of sintered fiber-reinforced intermetallic compounds of the present invention. Figure 3
Claims (2)
、耐熱繊維が分散されていることを特徴とする軽量、耐
熱性の焼結繊維強化金属間化合物複合材料。(1) A lightweight, heat-resistant sintered fiber-reinforced intermetallic compound composite material characterized in that heat-resistant fibers are dispersed in a matrix of a titanium-aluminum-based intermetallic compound.
金属間化合物微粉末、耐熱繊維及び成形助剤を混練して
得られた成形用混合物を、該混合物中の成形助剤の融点
以上の温度に加熱して所望の形状の金型に充填して所望
の形状の成形体を得、該成形体より成形助剤を除去した
後焼成することを特徴とする焼結繊維強化金属間化合物
複合材料の製造方法。(2) A molding mixture obtained by kneading a titanium-aluminum intermetallic compound fine powder with an average particle size of 10 μm or less, a heat-resistant fiber, and a molding aid is heated to a temperature higher than the melting point of the molding aid in the mixture. A sintered fiber-reinforced intermetallic compound composite material, which is heated and filled into a mold of a desired shape to obtain a molded body of a desired shape, and is fired after removing a molding aid from the molded body. Production method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28725387A JPH01129938A (en) | 1987-11-16 | 1987-11-16 | Composite material and its manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28725387A JPH01129938A (en) | 1987-11-16 | 1987-11-16 | Composite material and its manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01129938A true JPH01129938A (en) | 1989-05-23 |
Family
ID=17715006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28725387A Pending JPH01129938A (en) | 1987-11-16 | 1987-11-16 | Composite material and its manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01129938A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994023077A1 (en) * | 1993-04-01 | 1994-10-13 | United Technologies Corporation | Ductile titanium alloy matrix fiber reinforced composites |
| JPH08104933A (en) * | 1994-10-03 | 1996-04-23 | Mitsubishi Heavy Ind Ltd | Titanium aluminide base composite material |
| JPH09268336A (en) * | 1996-03-29 | 1997-10-14 | Agency Of Ind Science & Technol | Heat resistant material and its production |
| TWI747346B (en) * | 2019-07-04 | 2021-11-21 | 日商Ｓｍｃ股份有限公司 | Sensor mounting tool and fluid pressure cylinder |
-
1987
- 1987-11-16 JP JP28725387A patent/JPH01129938A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994023077A1 (en) * | 1993-04-01 | 1994-10-13 | United Technologies Corporation | Ductile titanium alloy matrix fiber reinforced composites |
| JPH08104933A (en) * | 1994-10-03 | 1996-04-23 | Mitsubishi Heavy Ind Ltd | Titanium aluminide base composite material |
| JPH09268336A (en) * | 1996-03-29 | 1997-10-14 | Agency Of Ind Science & Technol | Heat resistant material and its production |
| TWI747346B (en) * | 2019-07-04 | 2021-11-21 | 日商Ｓｍｃ股份有限公司 | Sensor mounting tool and fluid pressure cylinder |
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