JPH02236203A - Method for forming sintered body and structure of green compact - Google Patents

Method for forming sintered body and structure of green compact

Info

Publication number
JPH02236203A
JPH02236203A JP1057569A JP5756989A JPH02236203A JP H02236203 A JPH02236203 A JP H02236203A JP 1057569 A JP1057569 A JP 1057569A JP 5756989 A JP5756989 A JP 5756989A JP H02236203 A JPH02236203 A JP H02236203A
Authority
JP
Japan
Prior art keywords
core
green compact
sintered body
compact
powder
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
Application number
JP1057569A
Other languages
Japanese (ja)
Inventor
Takashi Yoshimura
隆志 吉村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Unisia Automotive Ltd
Original Assignee
Atsugi Unisia Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Atsugi Unisia Corp filed Critical Atsugi Unisia Corp
Priority to JP1057569A priority Critical patent/JPH02236203A/en
Publication of JPH02236203A publication Critical patent/JPH02236203A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C43/361—Moulds for making articles of definite length, i.e. discrete articles with pressing members independently movable of the parts for opening or closing the mould, e.g. movable pistons
    • 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
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/006—Pressing and sintering powders, granules or fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
    • B30B11/027—Particular press methods or systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/32—Discharging presses
    • 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
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps
    • 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
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
    • 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
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
    • B22F5/106—Tube or ring forms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C43/361—Moulds for making articles of definite length, i.e. discrete articles with pressing members independently movable of the parts for opening or closing the mould, e.g. movable pistons
    • B29C2043/3615—Forming elements, e.g. mandrels or rams or stampers or pistons or plungers or punching devices
    • B29C2043/3618—Forming elements, e.g. mandrels or rams or stampers or pistons or plungers or punching devices plurality of counteracting elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C2043/3665—Moulds for making articles of definite length, i.e. discrete articles cores or inserts, e.g. pins, mandrels, sliders
    • B29C2043/3668—Moulds for making articles of definite length, i.e. discrete articles cores or inserts, e.g. pins, mandrels, sliders destructible or fusible

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Powder Metallurgy (AREA)

Abstract

PURPOSE:To enhance the degree of freedom of the shape of produced parts and to simplify the structure of dies by heat-treating a green compact contg. embedded vanishable core in a sintering furnace. CONSTITUTION:A powdery mixture 14 of metal powder with a lubricant, etc., is filled into a shallow cavity 13 on a lower punch 12 in a die 11 and slightly pressed. A vanishable core 17 is put on the resulting preliminary green compact 16 and other powdery mixture 18 is filled into the space on the core 17 and pressed with the lower punch 12 and an upper punch 15 under a prescribed pressure to form a rectangular green compact 19. This compact 19 is heat- treated in a sintering furnace. The core 17 melts and a sintered alloy body 20 having a circular groove 21 can be obtd.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、例えば外周に溝部等を有する焼結体従来の技
術 周知のように、例えば自動車用部品にあっては、部品精
度の向上や製造工程の簡素化が図れる等の多くの利点を
有することから焼結体で形成したらのが一般に利用され
るに至っている。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a sintered body having a groove or the like on its outer periphery. Since it has many advantages such as simplifying the process, a sintered body has come to be commonly used.

斯かる焼結体の従来の成形方法としては、例えば第２図
に示すようにダイス１の貫通孔Ｉａ内に、内部軸方向に
コアロッド２が貫通した下バンチ３と、上記貫通孔１ａ
内に位置する一側面に帯状の突部４ａを有するサブ下バ
ンチ４とを夫々下方から挿通配置し、この両バンチ３，
４とダイス１とで画成されたキャビテイ５内に、金属粉
末と潤滑剤等からなる混粉６を充填する。次に、前記貫
通孔１ａの上方から上バンチ７を挿通して前記混粉６を
所定の圧力で加圧し、第３図及び第４図に示すような略
矩形状の圧粉体８を形成する。その後、上バンチ７を貫
通孔１ａから抜くと共に、ダイス１を下バンチ３と同一
の面まで下げる。次に、圧粉体８を、第４図の矢印方向
に押し出して取り出し、その後炉中の還元雰囲気内で熱
処理を行なう。A conventional method for forming such a sintered body includes, for example, as shown in FIG.
A sub-lower bunch 4 having a band-shaped protrusion 4a on one side located inside is inserted from below, and both bunches 3,
A mixed powder 6 consisting of metal powder, lubricant, etc. is filled into a cavity 5 defined by the die 4 and the die 1. Next, the upper bunch 7 is inserted from above the through hole 1a to press the mixed powder 6 at a predetermined pressure to form a substantially rectangular green compact 8 as shown in FIGS. 3 and 4. do. Thereafter, the upper bunch 7 is pulled out from the through hole 1a, and the die 1 is lowered to the same plane as the lower bunch 3. Next, the powder compact 8 is pushed out in the direction of the arrow in FIG. 4 and taken out, and then heat-treated in a reducing atmosphere in a furnace.

これによって、サブ下バンチ４の突部４ａにより一側面
水平方向に直線状の溝部９が形成された矩形状の焼結体
１０が形成される。（粉体粉末冶金協会編「第３回最新
の粉末冶金技術講座Ｊ　　（１９８５年出版）の第１６
ページ第１２図）。於；昭和６０年９月４日，５日　神
田学士会館の内容発明が解決しようとする課題 然し乍ら、上記従来の一般的な成形方法では、圧粉体８
の成形技術などの点から鋳造などと異なり中子等の使用
が困難である。したがって、圧粉体８の形状が制限され
、特にアンダカットのあるような部品の製造が困難であ
る。すなわち、圧粉体８の一部外側面に溝部９を形成す
る場合は、上述のような方法で成形できるが、例えば圧
粉体８の内部に環状空洞部や外周面全域に環状の溝部等
を形成することは不可能である。As a result, a rectangular sintered body 10 is formed in which a linear groove 9 is formed in the horizontal direction on one side by the protrusion 4a of the sub-lower bunch 4. (No. 16 of the 3rd Latest Powder Metallurgy Technology Course J (published in 1985) edited by the Powder Metallurgy Association
Page 12). Contents of Kanda Academic Hall, September 4th and 5th, 1985However, the problem to be solved by the invention is that the conventional general molding method described above does not
Unlike casting, it is difficult to use cores, etc. due to the molding technology involved. Therefore, the shape of the powder compact 8 is limited, making it difficult to manufacture parts with undercuts in particular. That is, when forming the groove part 9 on a part of the outer surface of the powder compact 8, it can be formed by the method described above. It is impossible to form.

また、上述の溝部９を形成するために下バンチ３の他に
、サブ下パンチ４を配置しなければならないため、装置
が複雑となりコストの高騰が余儀な《される。In addition, in addition to the lower bunch 3, a sub-lower punch 4 must be disposed in order to form the above-mentioned groove 9, which makes the device complicated and increases costs.

課題を解決するための手段 本発明は、上記従来の問題点に鑑みて案出されたもので
、まず成形方法としては、金型内の所定位置に予め焼失
性中子を配置した後、前記金型内に混粉を充填すると共
に、該混粉を加圧して圧粉体を形成し、その後前記圧粉
体の熱処理時に前記焼失性中子を焼失させることを特徴
としている。Means for Solving the Problems The present invention has been devised in view of the above-mentioned conventional problems. First, as a molding method, a burnable core is placed at a predetermined position in a mold, and then the The method is characterized in that a mixed powder is filled into a mold, the mixed powder is pressed to form a green compact, and then the burnable core is burnt out during heat treatment of the green compact.

圧粉体構造としては、金型内で加圧成形された圧粉体内
に空間部形成用の焼失性中子を埋設したことを特徴とし
ている。The compact structure is characterized by having a burnable core for forming a space embedded within the compact compact formed by pressure in a mold.

作用 上記構成の本発明によれば、混粉の加圧時に焼失性中子
を圧粉体内へ一体に埋設して、該圧粉体の熱処理時に焼
失性中子を７ｉ！ｉ失させるようにしたため、焼結体形
状の自由度が向上しζアンダカットのある部品や外周面
全域に溝部を有する部品を製造することができる。しか
も、粉体内に焼失性中子を入れるだけであるから、装置
を簡素化することができる。Effects According to the present invention having the above-mentioned configuration, the burnable core is integrally buried in the green compact when the mixed powder is pressed, and the burnable core is 7i! when the green compact is heat treated. Since the sintered body is made to lose its shape, the degree of freedom in the shape of the sintered body is improved, and it is possible to manufacture parts with ζ undercuts and parts with grooves all over the outer circumferential surface. Moreover, since the burnable core is simply inserted into the powder, the apparatus can be simplified.

実施例 以下、本発明の実施例を図面に基づいて詳述する。Example Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

最初に焼結体の成形方法を製造工程を示す第１図Ａ〜Ｇ
に基づいて説明する。まず、第１図八に示すようにダイ
ス１１を、貫通孔１１ａに挿通した下パンチｌ２の上部
所定位置まで下降させ、貫通孔１１８周面と下パンチ１
２上面との間に形成された浅いキャビティ１３内に金属
粉末と潤滑剤等からなる混粉１４を充填する。次に、ダ
イス１１を第ｌ図Ｂに示すように所定量上昇させ、その
後第１図Ｃに示す如く上パンチ１５によってキャヒティ
ｌ３内の混粉１４を軽く加圧する。この加圧終了後、上
パンチｌ５を上昇させてキャビティｌ３内から離脱させ
、次に、第ｌ図Ｄに示すように軽く加圧された予備圧粉
体１６の上面に、横断れによって、圧粉体ｌ９内に焼失
性中子１７が埋面真円の円環状の焼失性中子１７を載置
する。この焼失性中子１７は、後述する圧粉体の熱処理
潟度で溶解する非金属材で形成されており、また、その
外径は、予備圧粉体１６の外径つまりキャビティ１３の
内径より僅かに小さく設定されている。First, Figures 1 A to G show the manufacturing process of the sintered body forming method.
The explanation will be based on. First, as shown in FIG. 18, the die 11 is lowered to a predetermined position above the lower punch l2 inserted into the through hole 11a, and
A mixed powder 14 consisting of metal powder, lubricant, etc. is filled into a shallow cavity 13 formed between the top surface of the metal powder and the upper surface of the metal powder. Next, the die 11 is raised by a predetermined amount as shown in FIG. 1B, and then the mixed powder 14 in the cavity 13 is lightly pressed by the upper punch 15 as shown in FIG. 1C. After this pressurization is completed, the upper punch 15 is raised and removed from the cavity 13, and then, as shown in FIG. A burnable core 17 having a circular ring shape with a buried surface is placed in the powder 19. This burnable core 17 is made of a non-metallic material that melts at the heat treatment rate of the green compact, which will be described later, and its outer diameter is larger than the outer diameter of the pre-green compact 16, that is, the inner diameter of the cavity 13. It is set slightly smaller.

次に、該予備圧粉体１６及び焼失性中子１７の上に、第
１図Ｅに示すように別異の混粉ｌ８を充填する。その後
、第１図Ｆに示すように、予備圧粉体１６，焼失性中子
１７，混粉ｌ８を下バンチｌ２と上バンチ１５により所
定の圧力で加圧し、矩形状の圧粉体１９を形成する。こ
の加圧完了後は、第１図Ｇに示すように上バンチＩ５を
離間させると共にダイス１１を下降させ、下バンチｌ２
上の圧粉体１９をキャビティ１３内から取り出す。こ設
される。Next, a different mixed powder 18 is filled onto the preliminary green compact 16 and the burnable core 17, as shown in FIG. 1E. Thereafter, as shown in FIG. Form. After this pressurization is completed, the upper bunch I5 is separated and the die 11 is lowered, as shown in FIG.
The upper green compact 19 is taken out from the cavity 13. This will be established.

次に、斯かる圧粉体１９を焼結炉内に入れて熱処理を行
なう。ここで、前記焼失性中子１７は、焼結金属材料に
比較して低融点の材料で形成されているため、焼結炉内
温度が１ｌ００゜Ｃ−１２００℃まで上昇した際に、該
高熱により焼失する。Next, the green compact 19 is placed in a sintering furnace and subjected to heat treatment. Here, since the burnable core 17 is made of a material with a lower melting point than the sintered metal material, when the temperature inside the sintering furnace rises from 1100°C to 1200°C, the high temperature It was destroyed by fire.

したがって、焼結体２０の外周に、焼失性中子１７の大
きさの円環状溝部２ｌを形成できる。Therefore, an annular groove 2l having the size of the burnable core 17 can be formed on the outer periphery of the sintered body 20.

また、他例として、上記焼失性中子１７を所定温度下で
液体により溶解する科学物質により形成した場合は、焼
結炉内の圧粉体１９を所定温度つまり約８００゜Ｃまで
加熱した後、それを取り出して焼失性中子１７を液体で
溶解して流出させることも可能である。As another example, if the burnable core 17 is made of a chemical substance that dissolves in liquid at a predetermined temperature, after the green compact 19 in the sintering furnace is heated to a predetermined temperature, that is, about 800°C. It is also possible to take it out, dissolve the burnt-out core 17 in liquid, and drain it.

また、焼失性中子１７の表面にコーティングを施せば、
該焼失性中子ｌ７の発錆等が防止され、焼結体２０への
錆などの影響を回避できる。Furthermore, if the surface of the burnable core 17 is coated,
Rust and the like of the burnable core 17 are prevented, and the influence of rust on the sintered body 20 can be avoided.

本発明は、圧粉体１９に、焼失性中子１７を埋設した構
造としたため、上述のように部品形状の自由度が向上す
ることは勿論のこと、従来のような突部を有するサブ下
パンチ等が不要になり、金型構造が簡素化されてコスト
の低廉化が図れる。Since the present invention has a structure in which the burnable core 17 is embedded in the compacted powder body 19, the degree of freedom in the shape of the part is improved as described above, and the sub-bottom having a protrusion like the conventional one is improved. Punches and the like are not required, the mold structure is simplified, and costs can be reduced.

尚、本発明は、上記実施例における焼失性中子に限定さ
れず、焼結部品の使用目的に応じてその形状を任意に変
更することができる。Note that the present invention is not limited to the burnable core in the above embodiments, and the shape of the sintered part can be arbitrarily changed depending on the intended use of the sintered part.

発明の効果 以上の説明で明らかなように、本発明によれば、圧粉体
の熱処理時に焼失性中子を焼失させるようにしたため、
焼結体形状の自由度が向上し、例えば焼結体の外周面全
域に溝部を形成することが可能になった。Effects of the Invention As is clear from the above explanation, according to the present invention, since the burnable core is burnt out during heat treatment of the green compact,
The degree of freedom in shaping the sintered body has been improved, and it has become possible, for example, to form grooves all over the outer peripheral surface of the sintered body.

しかも、粉体内に焼失性中子を入れるだけであるから、
全体の焼結作業性が同上すると共に、従来のようなサブ
下パンチ等が不要になり、金型構造の簡素化が図れる。Moreover, since the burnable core is simply placed inside the powder,
The overall sintering workability is improved, and the conventional sub-lower punch etc. are no longer necessary, and the mold structure can be simplified.

この結果、加圧装置のコストの低廉化が図れる。As a result, the cost of the pressurizing device can be reduced.

【図面の簡単な説明】[Brief explanation of drawings]

第Ｉ図Ａ−Ｇは本発明に係る焼結体の成形方法の一実施
例を示す成形工程図、第２図及び第３図は従来の成形方
法を示す成形工程図、第４図は従来の圧粉体あるいは焼
結体を示す斜視図である。 １ｌ・・・ダイス、１２・・・下パンチ、１４．１８・
・・混粉、ｌ５・・・上パンチ、１７・・・焼失性中子
、ｌ９・・・圧粉体、２０・・・焼結体、２ｌ・・・溝
部（空間部）。 （Ｅ） １　１−−−９’イス １２−−一下ノＶ冫子 第１ １７−一一斌天柱中７ １９一一一仄βイホ ２０−一煽十百合金イホ ２１−−−＊邪（９間邪） 第１図Figures IA-G are molding process diagrams showing one embodiment of the method for molding a sintered body according to the present invention, Figures 2 and 3 are molding process diagrams showing a conventional molding method, and Figure 4 is a conventional molding process diagram. FIG. 2 is a perspective view showing a green compact or sintered body. 1l...Dice, 12...Lower punch, 14.18.
... Mixed powder, l5... Upper punch, 17... Burnable core, l9... Green compact, 20... Sintered compact, 2l... Groove (space). (E) 1 1---9' chair 12--Ichige no V child No. 1 17-11 Tenbashira middle 7 19111-beta Iho 20-1 fan 100 alloy Iho 21---* Evil (9-period evil) Figure 1

Claims (2)

【特許請求の範囲】[Claims] （１）金型内の所定位置に予め焼失性中子を配置した後
、前記金型内に混粉を充填すると共に、該混粉を加圧し
て圧粉体を形成し、その後前記圧粉体の熱処理時に前記
焼失性中子を焼失させたことを特徴とする焼結体の成形
方法。(1) After placing a burnt-out core in advance at a predetermined position in a mold, the mixed powder is filled into the mold, the mixed powder is pressurized to form a green compact, and then the green compact is A method for forming a sintered body, characterized in that the burnable core is burnt out during heat treatment of the body. （２）金型内で加圧成形された圧粉体内に空間部形成用
の焼失性中子を埋設したことを特徴とする圧粉体構造。(2) A compacted powder structure characterized in that a burnable core for forming a space is embedded in a compacted powder compacted by pressure molding in a mold.
JP1057569A 1989-03-09 1989-03-09 Method for forming sintered body and structure of green compact Pending JPH02236203A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1057569A JPH02236203A (en) 1989-03-09 1989-03-09 Method for forming sintered body and structure of green compact

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1057569A JPH02236203A (en) 1989-03-09 1989-03-09 Method for forming sintered body and structure of green compact

Publications (1)

Publication Number Publication Date
JPH02236203A true JPH02236203A (en) 1990-09-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP1057569A Pending JPH02236203A (en) 1989-03-09 1989-03-09 Method for forming sintered body and structure of green compact

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Country Link
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2342102A (en) * 1998-07-31 2000-04-05 Daimler Chrysler Ag Pressed fibre-reinforced composites using cores suitable for melt infiltration
WO2003012311A1 (en) * 2001-07-27 2003-02-13 Freni Brembo S.P.A. Mold and procedure for manufacturing of a braking band with ventilation ducts in composite material
EP1459861A1 (en) * 2003-03-19 2004-09-22 Sgl Carbon Ag Device and process for making hollow articles
JP2010522312A (en) * 2007-03-23 2010-07-01 ジーケーエヌ シンター メタルズ、エル・エル・シー Powder metal bearing cap vent window

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2342102A (en) * 1998-07-31 2000-04-05 Daimler Chrysler Ag Pressed fibre-reinforced composites using cores suitable for melt infiltration
GB2342102B (en) * 1998-07-31 2001-03-14 Daimler Chrysler Ag A process for producing bodies made of fibre-reinforced composites
US6328834B1 (en) 1998-07-31 2001-12-11 Daimlerchrysler Ag Process for producing bodies made of fiber-reinforced composites
WO2003012311A1 (en) * 2001-07-27 2003-02-13 Freni Brembo S.P.A. Mold and procedure for manufacturing of a braking band with ventilation ducts in composite material
US7785519B2 (en) 2001-07-27 2010-08-31 Freni Brembo S.P.A. Mold and procedure for the manufacture of a braking band of composite material, with ventilation ducts
EP1459861A1 (en) * 2003-03-19 2004-09-22 Sgl Carbon Ag Device and process for making hollow articles
JP2010522312A (en) * 2007-03-23 2010-07-01 ジーケーエヌ シンター メタルズ、エル・エル・シー Powder metal bearing cap vent window

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