JPH01298102A - Production of molded part composed of metal particle and produced packing element - Google Patents
Production of molded part composed of metal particle and produced packing elementInfo
- Publication number
- JPH01298102A JPH01298102A JP6915189A JP6915189A JPH01298102A JP H01298102 A JPH01298102 A JP H01298102A JP 6915189 A JP6915189 A JP 6915189A JP 6915189 A JP6915189 A JP 6915189A JP H01298102 A JPH01298102 A JP H01298102A
- Authority
- JP
- Japan
- Prior art keywords
- metal
- sintered part
- sintered
- powder
- silicate
- 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
- 238000012856 packing Methods 0.000 title claims abstract description 15
- 239000002923 metal particle Substances 0.000 title claims description 11
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 239000002184 metal Substances 0.000 claims abstract description 22
- 229910052751 metal Inorganic materials 0.000 claims abstract description 22
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims abstract description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000000203 mixture Substances 0.000 claims abstract description 15
- 239000000843 powder Substances 0.000 claims abstract description 11
- 239000010445 mica Substances 0.000 claims abstract description 10
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims abstract description 5
- 238000003825 pressing Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 14
- 239000011148 porous material Substances 0.000 claims description 6
- 238000005245 sintering Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- 239000010439 graphite Substances 0.000 abstract description 8
- 229910002804 graphite Inorganic materials 0.000 abstract description 8
- 238000002485 combustion reaction Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 238000004663 powder metallurgy Methods 0.000 abstract description 3
- 230000035515 penetration Effects 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 4
- 150000004760 silicates Chemical class 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 229910052615 phyllosilicate Inorganic materials 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0089—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with other, not previously mentioned inorganic compounds as the main non-metallic constituent, e.g. sulfides, glass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
- B22F3/26—Impregnating
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野コ
未発１ｊは、金属粒子から成る成形部品を圧縮成形及び
引き続き焼結により製造するための方法に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION The industrial application field 1j relates to a method for producing molded parts made of metal particles by compression molding and subsequent sintering.
本発明は更に、焼結部品から製造されるパッキング素子
に関するものである。The invention further relates to a packing element manufactured from a sintered part.
［従来の技術］
一般には金属粉末を用いるが金属粒子から粉末冶金によ
り焼結部品を製造する方法が以前から知られている。こ
れに用いられる金属粒子は、常温又は高温状態で圧縮さ
れ、引き続き焼結される。[Prior Art] Methods for manufacturing sintered parts from metal particles by powder metallurgy, generally using metal powder, have been known for some time. The metal particles used for this purpose are compressed at room temperature or at high temperature and then sintered.
焼結は、２／３乃至４１５の金属粒子溶融点温度におい
て還元雰囲気状態で行なわれる。このプロセスにおいて
、金属表面が焼結され、金属粒子は、硬化する。この種
の焼結部品は、他の金属粒子に比して１粒度が比較的細
く、均一で且つ比較的高い強度を備えている。該焼結部
品は更に、比較的多孔性であり、伸張性がわずかである
。Sintering is carried out in a reducing atmosphere at a metal particle melting point temperature of 2/3 to 415 degrees. In this process, the metal surface is sintered and the metal particles are hardened. This type of sintered part has a relatively fine particle size, uniformity, and relatively high strength compared to other metal particles. The sintered parts are also relatively porous and have only limited extensibility.
焼結部品は、例えば、軸受は材料として、又液状金属を
節化するための金属フィルタとして多くの技術分野で使
用されている。Sintered parts are used in many technical fields, for example as bearing materials and as metal filters to conserve liquid metals.
しかし、欠点は、その耐熱性にある。However, the drawback lies in its heat resistance.
［発明が解決しようとする課題］
従って本発明の目的は、比較的高い耐熱性において高い
滑らかさを有する焼結部品の製造方法及び焼結部品自体
を提供することにある。[Problems to be Solved by the Invention] Accordingly, an object of the present invention is to provide a method for manufacturing a sintered part having relatively high heat resistance and high smoothness, and to provide the sintered part itself.
［課題を解決するための手段］
この課題は、焼結部品の孔中へ粉末状の層ケイ酸塩を共
に押込みプレスすることにより解決された。Means for Solving the Problem This problem was solved by co-pressing powdered bed silicate into the holes of the sintered part.
焼結部品の自然孔中へ層ケイ酸塩を押込みプレスするこ
とにより、一方では高い耐熱性が又、他方では焼結部品
の滑らかさが得られる。これは、雲幅の高い耐熱性によ
るものである。By pressing the layer silicate into the natural pores of the sintered part, high heat resistance and, on the other hand, smoothness of the sintered part are obtained. This is due to the high heat resistance of cloud width.
本発明の非常に良好な他の形態としては、焼結部品の孔
中へ、黒鉛粉末と、粉末状の層ケイ酸塩を押込みプレス
することが考えられる。A very advantageous alternative embodiment of the invention is to press the graphite powder and the powdered bed silicate into the pores of the sintered part.
黒鉛を混合することにより、黒鉛の潤滑効果による焼結
部品の滑らかさが更に高められる。層ケイ酸塩は、しか
もその絶縁性に基づき、黒鉛を過熱から守る役目も果し
ている。実際には、層ケイ酸塩は孔中の黒鉛を被覆して
いる。所望温度が高くなればなる程、高い比率の雲母が
使用される。By mixing graphite, the smoothness of the sintered parts is further enhanced due to the lubricating effect of graphite. Due to its insulating properties, layered silicates also protect graphite from overheating. In reality, the sheet silicate coats the graphite in the pores. The higher the desired temperature, the higher the proportion of mica used.
従って、この種の焼結部品は、高温に対する耐熱性パッ
キング素子として用いられる。その理由は、孔が層ケイ
酸塩又は混合物により閉止されているからである。この
ような使用は、全く思いもよらぬことであり、又、その
多孔性状態にある焼結部品に関する従来の知識及び使用
ケースに反するものである。Sintered parts of this type are therefore used as heat-resistant packing elements for high temperatures. The reason is that the pores are closed by layered silicates or mixtures. Such a use is completely unexpected and contrary to conventional knowledge and use cases regarding sintered parts in their porous state.
前記層ケイ酸塩は、大きな無機質群に属しており、それ
には、例えば雲母及びあらゆる陶土無機質が屈する。こ
れらは全て、部材として無限に伸張しており、且つ磁極
方向に調整された酸化ケイ素（ＳｉＯ２）正四面体層に
共通しており、該正四面体層は、自らの側で六角形のリ
ングを形成している。この理由により、特に雲母は、最
適なものとして示される。しかし、当然のことながら、
必要に応じて他の層ケイ酸塩を他の目的のために使用す
ることもｉｊｉ能である。The sheet silicates belong to a large group of minerals, to which, for example, mica and all china minerals belong. All of these have in common a regular tetrahedral layer of silicon oxide (SiO2) that extends infinitely as a member and is aligned in the direction of the magnetic pole, and the tetrahedral layer has a hexagonal ring on its side. is formed. For this reason, mica in particular is indicated as being optimal. But, of course,
It is also possible to use other layered silicates for other purposes if desired.
雲母又は混合物を焼結部品の孔中へ挿入するためには、
非常に多くの方法が可能である。In order to insert the mica or mixture into the holes of the sintered part,
A large number of methods are possible.
例えば、混合物は、真空下において孔中へ挿入されるが
、そのために焼結部品はしかるべき真空容器中へ置かれ
る。For example, the mixture is inserted into the hole under vacuum, for which purpose the sintered part is placed in a suitable vacuum container.
混合物が液状支持媒体を介して孔中ヘプレスされる場合
、混合物の挿入は容易になり２又、最適な方法で行なわ
れる。Insertion of the mixture is facilitated and carried out in an optimal manner if the mixture is pressed into the bore via a liquid support medium.
その場合、支持媒体を引き続き焼結部品から取り除ける
ように配慮する必要がある。これは、例えば、高温で気
化することにより行なわれる。In that case, care must be taken to ensure that the support medium can subsequently be removed from the sintered part. This is done, for example, by vaporization at high temperatures.
可能な支持媒体としては、油又は水の使用が可能である
。しかし、当然のことながら、本発明の範囲内において
は、必要とあらば他の支持媒体ちり衡である。Possible support media include oil or water. However, it will be appreciated that other support media may be used if desired within the scope of the present invention.
黒鉛と層ケイ酸塩との混合比率は、使用ケースに基づき
調整されるが、その場合、既述の如く、場合によっては
層ケイ酸塩単独での使用も可能である。The mixing ratio of graphite and sheet silicate is adjusted based on the use case, but in that case, as mentioned above, it is also possible to use sheet silicate alone depending on the case.
例えば、５０対５０の混合比率が可能であるが、上下１
０，２０．３０又は４０％の誤差も可能である。For example, a 50:50 mixing ratio is possible, but one
Errors of 0, 20.30 or 40% are also possible.
処理されるべき焼結部品の厚さ及び孔の大きさに応じて
、必要とあらば、例えば１０重量パーセントを越える比
較的多量の混合物を孔中ヘプレスすることも可能である
。Depending on the thickness of the sintered part to be treated and the size of the holes, it is also possible, if necessary, to press relatively large amounts of the mixture into the holes, for example more than 10 weight percent.
本発明の他の構成においては、金属粒子として、金属粉
末の代わりに小さな金属製ワイヤ又は金属薄片が型プレ
スされ、型に基づき焼結される。一般的にわずかな柔軟
性を有する焼結部品と１本発明に基づき金属製ワイヤを
用いて製造されている焼結部品との差異は、より高い柔
軟性と、より良好な減衰特性とにある。更にこの方法を
用いることにより、比較的高い強度にもかかわらず非常
にわずかな厚さの部品製造が可能となるが、それに伴い
、本発明に基づく混合物が多量に焼結部品中へ挿入され
る。In a further development of the invention, instead of metal powder, small metal wires or metal flakes are pressed into a mold and sintered in the mold as the metal particles. The difference between the sintered parts, which generally have a slight flexibility, and the sintered parts produced using metal wire according to the invention lies in a higher flexibility and better damping properties. . Furthermore, using this method it is possible to produce parts with a very small thickness despite the relatively high strength, with the result that a large amount of the mixture according to the invention is inserted into the sintered part. .
金属製ワイヤの長さ及び直径は、使用り−スに応じて調
整される。一般に、金属製ワイヤ又は、金属薄片が使用
されるが、該金属薄片は、０．１乃至２ｍｍの直径又は
幅と、約０．５乃至１０ｍｍの長さを有しており、その
場合、当然のことながら本発明の範囲においては、上下
の誤差が可能である。The length and diameter of the metal wire is adjusted depending on the application. Generally, metal wires or metal flakes are used, the metal flakes having a diameter or width of 0.1 to 2 mm and a length of about 0.5 to 10 mm, in which case, of course However, within the scope of the present invention, upper and lower errors are possible.
本発明に基づき製造された焼結部品は、パッキング素子
として使用することが好都合であるが。The sintered parts produced according to the invention are advantageously used as packing elements.
該パッキング素子は、高温負荷にさらされうるものであ
る。The packing element can be subjected to high temperature loads.
［実施例］
以下に本発明に基づく焼結部品の製造例が記載されてい
る。[Example] Below, an example of manufacturing a sintered part based on the present invention is described.
前記焼結部品は、粉末を使用する場合、通常の如く、油
圧プレス又は偏心プレスにより形に型プレスされ、引き
続き、通常の方法で焼結される。If powder is used, the sintered parts are pressed into shape, as is customary in a hydraulic or eccentric press, and then sintered in the usual manner.
前記黒鉛粉末及び雲母粉末は、カリプリアオイル（ｋａ
ｌｉｂｒｉｅｒｏｌｅｓ）又は他のオイル状媒体の溶液
中へ混合される。焼結部品は、次に真空容器内に置かれ
１次に真空下で、黒鉛粉末及び雲母粉末から成る混合物
が、支持媒体としてのカリプリアオイルを用いて焼結部
品の孔中へ押込みプレスされる。The graphite powder and mica powder are prepared using calipria oil (ka
(librieroles) or other oily medium. The sintered part is then placed in a vacuum vessel and first under vacuum a mixture consisting of graphite powder and mica powder is forced and pressed into the pores of the sintered part using caliprian oil as a supporting medium. Ru.
次にオイルは、例えば加熱により再び押出しプレスによ
り取出される。黒鉛／雲母粉末混合物の比率は、焼結部
分における１０重量パーセント又はそれ以上である。焼
結部品の厚さが少なくなればなる程、また、孔の大きさ
が大きくなればなる程、より多くの黒鉛及び雲母粉末が
挿入される。The oil is then removed again by an extrusion press, for example by heating. The proportion of graphite/mica powder mixture is 10 weight percent or more in the sintered part. The smaller the thickness of the sintered part and the larger the hole size, the more graphite and mica powder will be inserted.
これは特に、金属製ワイヤを型プレスし、焼結した焼結
部品の場合に該当する。This is particularly the case with sintered parts made of metal wire that is stamped and sintered.
可能な用途蒙域は、自動パッキング素子であるが、その
場合、高い耐熱性にもかかわらず良好な滑り特性にかか
っており１例えば内燃機関の排気ガス用パッキングリン
グに用いられる。A possible field of application is automatic packing elements, which depend on good sliding properties despite high heat resistance and are used, for example, in packing rings for the exhaust gas of internal combustion engines.
［発明の効果］
以上のように本発明は構成されるので、比較的高い耐熱
性において高いなめらかさを有する焼結部品としてのパ
ッキング素子が得られることとなる。そして、このパッ
キング素子は、内燃機関の排気ガス用パッキングリング
に用いて特に有効である。[Effects of the Invention] Since the present invention is configured as described above, a packing element as a sintered part having relatively high heat resistance and high smoothness can be obtained. This packing element is particularly effective for use in a packing ring for exhaust gas of an internal combustion engine.
Claims (1)
結部品を製造するための方法として、前記焼結部品の孔
中へ粉末状の層ケイ酸塩を押込みプレスすることを特徴
とする金属粒子から成る成形部品の方法。 （２）前記焼結部品の孔中へ黒鉛粉末と粉末状の層ケイ
酸塩から成る混合物が押込みプレスされることを特徴と
する請求項（１）に記載の製造方法。 （３）層ケイ酸塩として雲母が使用されることを特徴と
する請求項（１）又は（２）に記載の方法。 （４）前記層ケイ酸塩又は前記混合物は、真空下で前記
焼結部品中へ押込みプレスされることを特徴とする請求
項（１）乃至（３）に記載の方法。 （５）前記層ケイ酸塩又は前記混合物は、液状の支持媒
体により前記孔中へ押込みプレスされることを特徴とす
る請求項（１）乃至（４）に記載の方法。 （６）支持媒体としてオイルが使用されることを特徴と
する請求項（５）に記載の方法。（７）支持媒体として
水が使用されることを特徴とする請求項（５）に記載の
方法。 （８）前記混合比率は、２０乃至８０％の黒鉛粉末と、
２０乃至８０％の粉末状層ケイ酸塩であることを特徴と
する請求項（２）に記載の方法。 （９）前記孔中へ挿入される混合物は、前記焼結部品の
１０重量パーセントにまで至ることを特徴とする請求項
（１）乃至（８）に記載の方法。 （１０）前記焼結部品のための金属粒子としては、金属
粉末が使用されることを特徴とする請求項（１）乃至（
９）に記載の方法。 （１１）金属粒子として、小さな金属製ワイヤ又は金属
薄片が使用されることを特徴とする請求項（１）乃至（
１０）に記載の方法。 （１２）直径又は幅０．１乃至２ｍｍ、長さ約０．５乃
至１０ｍｍの金属製ワイヤ又は金属薄片が使用されるこ
とを特徴とする請求（１１）に記載の方法。 （１３）前記焼結部品の前記孔中へは、粉末状の層ケイ
酸塩が押込みプレスされていることを特徴とする焼結部
品から構成されているパッキング素子。 （１４）前記焼結部品の孔中へは、黒鉛粉末及び粉末状
の層ケイ酸塩から成る混合物が押込みプレスされている
ことを特徴とする請求項（１２）又は（１３）に記載の
焼結部品から構成されているパッキング素子。Claims: (1) A method for producing a mold sintered part from metal powder by mold pressing and subsequent sintering, in which a powdered bed silicate is forced into the pores of the sintered part. A method for forming a molded part made of metal particles, characterized in that: (2) The manufacturing method according to claim 1, characterized in that a mixture of graphite powder and powdered bed silicate is pressed into the holes of the sintered part. (3) A method according to claim 1 or 2, characterized in that mica is used as the layered silicate. 4. A method according to claims 1 to 3, characterized in that the layered silicate or the mixture is force-pressed into the sintered part under vacuum. 5. A method according to claims 1 to 4, characterized in that the layered silicate or the mixture is forced into the holes by means of a liquid support medium. (6) A method according to claim 5, characterized in that oil is used as the support medium. (7) Process according to claim (5), characterized in that water is used as support medium. (8) The mixing ratio is 20 to 80% graphite powder,
Process according to claim 2, characterized in that it is 20 to 80% powdered bed silicate. 9. A method according to claims 1 to 8, characterized in that the mixture inserted into the holes amounts to up to 10 percent by weight of the sintered part. (10) Claims (1) to (1) characterized in that metal powder is used as the metal particles for the sintered part.
9). (11) Claims (1) to (1) characterized in that small metal wires or metal flakes are used as the metal particles.
10). (12) A method according to claim (11), characterized in that a metal wire or metal flake having a diameter or width of 0.1 to 2 mm and a length of approximately 0.5 to 10 mm is used. (13) A packing element composed of a sintered part, characterized in that a powdered bed silicate is pressed into the holes of the sintered part. (14) The sintered part according to claim 12 or 13, wherein a mixture of graphite powder and powdered bed silicate is pressed into the holes of the sintered part. A packing element consisting of connecting parts.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3809737.0 | 1988-03-23 | ||
| DE19883809737 DE3809737A1 (en) | 1988-03-23 | 1988-03-23 | METHOD FOR PRODUCING MOLDED PARTS FROM METAL PARTICLES AND SEALING ELEMENT MADE THEREOF |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01298102A true JPH01298102A (en) | 1989-12-01 |
Family
ID=6350459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6915189A Pending JPH01298102A (en) | 1988-03-23 | 1989-03-20 | Production of molded part composed of metal particle and produced packing element |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0334212A3 (en) |
| JP (1) | JPH01298102A (en) |
| DE (1) | DE3809737A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5259860A (en) * | 1990-10-18 | 1993-11-09 | Hitachi Powdered Metals Co., Ltd. | Sintered metal parts and their production method |
| BRPI0922422B1 (en) * | 2008-12-22 | 2017-12-19 | Höganäs Ab Publ | The invention relates to a powder-based composition of iron, the use of a silicon compound in an additive improvedability, and methods of producing an iron-based powder composition and to produce a sintered layer of iron |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2818634A (en) * | 1954-03-17 | 1958-01-07 | Raybestos Manhattan Inc | Sintered copper friction elements containing a mineral filler |
| NO135019C (en) * | 1968-09-26 | 1977-01-26 | Allegheny Ludlum Steel | |
| GB1598816A (en) * | 1977-07-20 | 1981-09-23 | Brico Eng | Powder metallurgy process and product |
| US4531273A (en) * | 1982-08-26 | 1985-07-30 | Worcester Controls Corporation | Method for fabricating graphite filled sintered metal seats for ball valves |
| US4462603A (en) * | 1983-03-16 | 1984-07-31 | Metex Corporation | Knitted wire mesh exhaust coupling seal with refractory metallic oxide impregnant |
| GB2164070B (en) * | 1984-09-05 | 1987-10-28 | Tba Industrial Products Ltd | Heat settable sealant material |
| EP0266936B1 (en) * | 1986-10-29 | 1992-05-13 | Eaton Corporation | Powdered metal part |
-
1988
- 1988-03-23 DE DE19883809737 patent/DE3809737A1/en not_active Ceased
-
1989
- 1989-03-16 EP EP89104732A patent/EP0334212A3/en not_active Withdrawn
- 1989-03-20 JP JP6915189A patent/JPH01298102A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE3809737A1 (en) | 1989-10-05 |
| EP0334212A2 (en) | 1989-09-27 |
| EP0334212A3 (en) | 1990-06-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7043406B2 (en) | New iron-based composite powder | |
| CA2364930A1 (en) | Metal/ceramic composite molding material | |
| CN105256186A (en) | Powder metallurgy bearing material and preparation method thereof | |
| CN106191505A (en) | A kind of preparation method of new type high temperature antioxidation porous material | |
| BRPI0606966B1 (en) | Method and material for infiltrating a powdered metal part | |
| CN104372237B (en) | High-compactness and the preparation method of high magnetic characteristics powder metallurgy sendust | |
| JPH01298102A (en) | Production of molded part composed of metal particle and produced packing element | |
| US4017426A (en) | Highly porous conductive ceramics and a method for the preparation of same | |
| JPS5820906B2 (en) | Carbide heat-resistant material | |
| JP2743090B2 (en) | How to control the carbon content of metal injection products | |
| KR102077280B1 (en) | Silver - ceramic composites for silver art clay and producing method of same | |
| JPS623071A (en) | Manufacture of carbon-ceramic composite material | |
| Ngai et al. | A study on Ti3SiC2 reinforced copper matrix composite by warm compaction powder metallurgy | |
| JPS55115901A (en) | Production of electric contact point material | |
| JPS6330392B2 (en) | ||
| JPH0324205A (en) | Manufacture of metallic mold | |
| CN105441750A (en) | Sliding bearing material | |
| JPH0412049A (en) | Production of sintered ceramic material | |
| JPS61281059A (en) | Manufacture of electroconductive ceramic sintered body | |
| KR100261058B1 (en) | Method of manufacturing a sintered alloy material | |
| JPS61279653A (en) | Ni-base composite material excellent in wear resistance and corrosion resistance and its production | |
| JP2009176945A (en) | Production process of thermoelectric conversion element | |
| JPS59223273A (en) | High sliding characteristic silicon carbide sintered body | |
| JPH05221742A (en) | Porous silicon carbide ceramic and its production | |
| JPS63233077A (en) | Silicon nitride base composite sintered body |