JPH02153857A - Production of sintered material - Google Patents
Production of sintered materialInfo
- Publication number
- JPH02153857A JPH02153857A JP63305157A JP30515788A JPH02153857A JP H02153857 A JPH02153857 A JP H02153857A JP 63305157 A JP63305157 A JP 63305157A JP 30515788 A JP30515788 A JP 30515788A JP H02153857 A JPH02153857 A JP H02153857A
- Authority
- JP
- Japan
- Prior art keywords
- organic solvent
- binder
- molded
- molded article
- organic
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 18
- 239000011230 binding agent Substances 0.000 claims abstract description 26
- 229920000620 organic polymer Polymers 0.000 claims abstract description 21
- 239000003960 organic solvent Substances 0.000 claims abstract description 17
- 239000000919 ceramic Substances 0.000 claims abstract description 16
- 239000000843 powder Substances 0.000 claims abstract description 16
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 238000005245 sintering Methods 0.000 claims abstract description 11
- 238000000605 extraction Methods 0.000 claims description 17
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 14
- 238000000465 moulding Methods 0.000 claims description 14
- 238000005238 degreasing Methods 0.000 claims description 12
- 238000001746 injection moulding Methods 0.000 claims description 6
- 238000004898 kneading Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 4
- 238000005453 pelletization Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 25
- 238000001125 extrusion Methods 0.000 abstract description 10
- 238000002347 injection Methods 0.000 abstract description 5
- 239000007924 injection Substances 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 229920000642 polymer Polymers 0.000 abstract 1
- 239000002491 polymer binding agent Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 abstract 1
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 15
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 9
- 239000002904 solvent Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 229920000058 polyacrylate Polymers 0.000 description 3
- -1 polypropylene Polymers 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 230000004580 weight loss Effects 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 206010048232 Yawning Diseases 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 230000002747 voluntary effect Effects 0.000 description 1
- 238000009692 water atomization Methods 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
Landscapes
- Compositions Of Oxide Ceramics (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野コ
本発明は金属もしくはセラミックスの焼結体を製造する
方法に関し、特に焼結前に成形体を原料粉末と有機高分
子を主成分とするバインダーと混合、混練、ペレット化
した混和物を射出成形または抽出成形した後に脱脂する
ことによって得る方法に関する。[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a method for producing a sintered body of metal or ceramics, and in particular, the present invention relates to a method for producing a sintered body of metal or ceramics, and in particular, a method of manufacturing a sintered body of metal or ceramics, and in particular, a method of manufacturing a sintered body of metal or ceramics, and in particular, a method of manufacturing a sintered body of a metal or ceramic, in which a formed body is mixed with a raw material powder and a binder mainly composed of an organic polymer before sintering. It relates to a method of obtaining a mixture by injection molding or extraction molding a mixture obtained by mixing, kneading, and pelletizing the mixture, and then degreasing the mixture.
［従来の技術］
一般に金属もしくはセラミックスの焼結体を製造する工
程で焼結用の成形体は原料粉末を圧縮成形することによ
り圧粉体として得られている。これは通常上下方向から
パンチで加圧するという方法であることから、得られる
成形体の形状としては、円柱、円筒のような比較的単純
なものに限られ、より複雑な形状の製品を得るには焼結
上がりの製品に切削、研削などの後加工を施す必要があ
る。[Prior Art] Generally, in the process of producing a sintered body of metal or ceramics, a compact for sintering is obtained as a green compact by compression molding raw material powder. Since this method usually uses punches to apply pressure from above and below, the shape of the molded product obtained is limited to relatively simple shapes such as cylinders and cylinders, and it is difficult to obtain products with more complex shapes. It is necessary to perform post-processing such as cutting and grinding on the sintered product.
このような問題点を改善すべく、成形体の形状を製品に
より近づけるための技術が種々検討されているが、いわ
ゆるエンジニアリングセラミックスなどを中心とした窯
業製品の分野では原料粉末に１０〜２Ｏｆｆｉ量％の有
機高分子を主成分としたバインダーを加え、混合、混練
し、射出成形または抽出成形した成形体を脱脂、焼結し
て製品を得るという方法が工業的に行なわれてきている
。射出成形、抽出成形は元来熱可塑性有機高分子の成形
方法であるが、製品を後加工なしに高い寸法精度てしか
も大量に生産するのに適しているため、前述のような問
題の解決策としては注目すべきものがある。そして近年
のアトマイズ法に代表される金属粉末の製造技術の発展
やバインダー配合技術の発展に支えられて、前述の方法
が金属の焼結製品にも適用が試みられてきている。In order to improve these problems, various techniques are being studied to make the shape of the molded object more similar to the product, but in the field of ceramic products, mainly so-called engineering ceramics, 10 to 2% Offi is added to the raw material powder. A method has been carried out industrially in which a binder mainly composed of an organic polymer is added, mixed, kneaded, injection molded or extraction molded, and the molded product is degreased and sintered to obtain a product. Injection molding and extraction molding are originally molding methods for thermoplastic organic polymers, but they are suitable for producing products with high dimensional accuracy and in large quantities without post-processing, so they are suitable for solving the problems mentioned above. There are some things worth noting. Supported by the recent development of metal powder manufacturing technology, typified by the atomization method, and the development of binder compounding technology, attempts have been made to apply the above-mentioned method to sintered metal products.
［発明が解決しようとする課題］
この射出または抽出成形体を焼結に使用する方法と従来
の圧縮成形体を焼結する方法の相違点は成形法が異なる
ことは勿論であるが、前者では成形体が多量のバインダ
ーを含有するため焼結前に脱バインダー、即ち脱脂工程
を施す必要があることである。因みに後者では成形体が
全熱バインダーを含まないか、含む場合でもごく少量な
ので直接焼結することができる。そしてこの脱脂工程は
成形体を徐々に加熱してバインダーを熱分解ガスとして
揮散させるというのが従来の一般的な方法である。この
時の昇温速度はあまりに大であると熱分解ガスの発生が
急激過ぎて成形体に亀裂やふくれなどの変形を引き起こ
すため５〜ｂ程度とする必要がある。このため室温から
６００℃まで昇温するとして、３０〜１２０）１ｒとい
う長時間を要することとなり、製造コスト低下を阻害す
る要因となっている。[Problems to be Solved by the Invention] The difference between the method of using this injection or extraction molded body for sintering and the conventional method of sintering a compression molded body is that the molding method is different, but in the former, Since the molded body contains a large amount of binder, it is necessary to perform a binder removal, that is, a degreasing step, before sintering. Incidentally, in the latter case, the molded body does not contain a total heat binder, or even if it does contain it, it is only in a small amount, so it can be directly sintered. The conventional general method for this degreasing step is to gradually heat the molded body to volatilize the binder as a pyrolysis gas. If the temperature increase rate at this time is too high, the generation of pyrolysis gas will be too rapid, causing deformation such as cracks and blisters in the molded body, so it is necessary to set it to about 5 to b. For this reason, raising the temperature from room temperature to 600°C requires a long time of 30 to 120)1 r, which is a factor that hinders the reduction in manufacturing costs.
本発明の技術課題はこの欠点を除くため、従来のいわゆ
る加熱脱脂法に替わるバインダー除去法を検討した結果
なされたもので、前記の射出または抽出成形体より焼結
製品を得る工程における脱脂工程の時間短縮を可能とし
た焼結体の製造方法を提供することにある。The technical problem of the present invention was achieved in order to eliminate this drawback, as a result of studying a binder removal method as an alternative to the conventional so-called heat debinding method. It is an object of the present invention to provide a method for manufacturing a sintered body that enables time reduction.
［課題を解決するための手段］
本発明によれば、金属もしくはセラミックスの粉末に有
機高分子を主成分とするバインダーを混合、混練、ペレ
ット化して得られた混合物を射出成形もしくは抽出成形
により所望の形状の成形体とした後、所定の有機溶媒に
より脱脂、焼結することにより焼結体を製造する方法に
おいて、前記有機高分子は、所定の有機溶媒に対して可
溶性の成分と不溶性成分とを有することを特徴とする焼
結体の製造方法が得られる。[Means for Solving the Problems] According to the present invention, a mixture obtained by mixing, kneading, and pelletizing metal or ceramic powder with a binder mainly composed of an organic polymer is molded into desired shapes by injection molding or extraction molding. In the method of manufacturing a sintered body by forming a molded body into a shaped body, degreasing it with a predetermined organic solvent, and sintering it, the organic polymer has a soluble component and an insoluble component in the predetermined organic solvent. A method for manufacturing a sintered body is obtained.
即ち、本発明は前記の射出または抽出成形体にバインダ
ーとして含まれる有機高分子をある種の６機溶媒に対し
て溶解するものとしないものとの２種以上の組み合わせ
とし、脱脂工程は有機溶媒を用いて可溶成分のみを抽出
することによって行うように構成したもので、従来の加
熱脱脂法よりも短時間で、しかも成形体の変形を生じる
ことなく脱脂を行なえることを特徴とする。That is, the present invention uses a combination of two or more types of organic polymers contained as binders in the injection or extraction molded product, one that is soluble in a certain kind of solvent and one that is not. This method is configured to extract only soluble components using a method of degreasing, and is characterized by being able to perform degreasing in a shorter time than conventional thermal degreasing methods and without causing deformation of the molded product.
有機物と無機物の混合物から両者を分離する方法として
は有機溶媒による抽出が有効であるが、本製造工程中の
従来の脱脂法である加熱脱脂も有機物と無機物の分離操
作に他ならない。Extraction with an organic solvent is effective as a method for separating both organic and inorganic substances from a mixture, but heat degreasing, which is a conventional degreasing method during this manufacturing process, is nothing but an operation for separating organic and inorganic substances.
しかし単に成形体をバインダーを溶解し得る有機溶媒に
浸漬して抽出しようとしてもバインダーの溶解に伴って
成形体が崩壊してしまう場合がほとんどであり、この溶
媒抽出法は本製造工程に適用することは極めて困難であ
る。一方で、有機物そしてここで問題にしているバイン
ダーの主成分である有機高分子は化学構造によってそれ
を溶解し得る有機溶媒は限定される。逆の観点から見れ
ば、ある種の有機溶媒はある種の有機高分子に対して良
溶媒であっても別種の有機高分子に対しては貧溶媒であ
る場合も生じ、この性質を利用すれば２種以上の有機高
分子の混合物から特゛定のを機高分子を選択的に抽出す
ることが可能である。However, even if an attempt is made to extract the molded object simply by immersing it in an organic solvent that can dissolve the binder, in most cases the molded object collapses as the binder dissolves, so this solvent extraction method is not applicable to this manufacturing process. This is extremely difficult. On the other hand, organic substances and organic polymers, which are the main components of the binder in question here, have a limited number of organic solvents that can dissolve them depending on their chemical structures. From the opposite perspective, a certain type of organic solvent may be a good solvent for one type of organic polymer but a poor solvent for another type of organic polymer, and this property can be exploited. For example, it is possible to selectively extract a specific organic polymer from a mixture of two or more organic polymers.
本発明者らはこれらの事実に鑑み、金属またはセラミッ
クス粉末と有機高分子を主成分としたバインダーからな
る成形体を、有機溶媒を用いてバインダーの一部を残留
させるようにしながら抽出処理を施すことによって、形
状を損うことなくしかも焼結可能な成形体が得られるこ
とを見出し本発明をなすに至ったものである。In view of these facts, the present inventors performed an extraction process on a molded body made of a binder mainly composed of metal or ceramic powder and an organic polymer using an organic solvent while leaving a part of the binder remaining. The present inventors have discovered that a molded body that can be sintered without losing its shape can be obtained by doing so, leading to the present invention.
本発明に使用される粉末は粉末とするのが可能で焼結し
得るものであれば特に限定されるものではなく、各種純
金属及び合金粉末、またセラミックスであればフェライ
ト、アルミナなどが挙げられる。The powder used in the present invention is not particularly limited as long as it can be made into powder and can be sintered, and examples include various pure metal and alloy powders, and ceramics such as ferrite and alumina. .
また有機高分子の組み合わせの例として、ポリプロピレ
ン、アクリル系ポリマーを使用すれば、前者はベンゼン
にほとんど溶解しないが、アクリル系ポリマーに対して
は良溶媒であり、本発明の目的に適合するものである。Furthermore, as an example of a combination of organic polymers, if polypropylene and acrylic polymer are used, the former is hardly soluble in benzene, but is a good solvent for acrylic polymer and is suitable for the purpose of the present invention. be.
［実施例］ 以下に実施例を挙げ説明する。[Example] Examples will be given and explained below.
〈実施例−１〉
水アトマイズ法によって製造した平均粒径９．６μａの
Ｆｅ−５０Ｃｏ粉末９１．Ｏｖｔ％にバインダーとして
高密度ポリエチレン１．０ｗ１％、酢酸ビニル含量２５
％のエチレン−酢酸ビニル共重合体３、Ｏｖｔ％、ポリ
アクリル酸ブチル２．０ｗ１％、融点６０℃のパラフィ
ンワックス２．Ｏｖｔ％、ステアリンｌ！２１．０ｙｔ
％を夫々加え混練した混和物をペレットとした後、射出
成形により外径φ３Ｃ１＋鳳、内径φ２０、厚さ５ ＋
ａｍのリング状の成形体を得た。この成形体を６０℃の
トルエンに浸漬し、５Ｈｒ保持したところ、成形体の重
量減はｙ、ｅｖｔ％で、寸法の変化は見られなかった。<Example-1> Fe-50Co powder 91.0 with an average particle size of 9.6 μa manufactured by a water atomization method. Ovt%, high density polyethylene 1.0w1% as binder, vinyl acetate content 25
% ethylene-vinyl acetate copolymer 3, Ovt%, butyl polyacrylate 2.0w1%, paraffin wax with melting point 60°C 2. Ovt%, stearinl! 21.0yt
After adding and kneading the mixture into pellets, injection molding is performed to make pellets with an outer diameter of φ3C1+, an inner diameter of φ20, and a thickness of 5+.
A ring-shaped molded product of am was obtained. When this molded body was immersed in toluene at 60° C. and maintained for 5 hours, the weight loss of the molded body was y, evt%, and no change in dimensions was observed.
つまりバインダーの８４．４ｉ％はトルエンにって抽出
され残りの１５．Ｇｖｔ％はトルエンに不溶な高密度ポ
リエチレンが主成分と考えられる。この脱脂成形体をＨ
２雰囲２で１２５０℃Ｘ５Ｈｒ焼結した結果相対密度９
６％の焼結体が得られた。この時の寸法の収縮は外内径
とも約１７％で、厚さは約１２％であり、変形は認めら
れなかった。In other words, 84.4i% of the binder is extracted with toluene and the remaining 15. Gvt% is considered to be mainly composed of high density polyethylene which is insoluble in toluene. This degreased molded body
Relative density 9 as a result of sintering at 1250℃ x 5 hours in atmosphere 2
A sintered body of 6% was obtained. At this time, the dimensional shrinkage was about 17% for both the outer and inner diameters, and about 12% for the thickness, and no deformation was observed.
く比較例−１〉
実施例−１と同様にして得られた成形体をＡｒ雰囲気で
室温から６００℃まで昇温し、６００℃で５１１「、保
持するという方法で脱脂を行なった。Comparative Example 1> A molded article obtained in the same manner as in Example 1 was heated from room temperature to 600° C. in an Ar atmosphere, and degreased by holding the temperature at 600° C. for 511°C.
この時の昇温速度は５，１０．１５，２０．４０”Ｃ／
ｌｌｒの５条件としたが、変形のない脱脂体か得られた
のは５℃／ｌｌｒ、１０℃／１１ｒのみであった。The heating rate at this time is 5, 10.15, 20.40"C/
Although five conditions of llr were used, degreased bodies without deformation were obtained only under 5°C/llr and 10°C/11r.
〈実施例−２〉
〒均粒径１．０μ腸のストロンチウムフェライトの仮焼
粉、９０．０ｗ１％にバインダーとしてポリプロピレン
１．０νｔ％、酢酸ビニル含量２５％のエチレン−酢酸
ビニル共重合体３．０ｗ１％、ポリスチレン３、ＯｖＬ
９１５、ｍ点６０℃のパラフィンワックス２、ＯｖＬ
％、ステアリン酸１．Ｏｖｔ％を夫々加え、抽出成形に
より外径φ３６ｍｍ、内径φ２６ ｙａｗｎのパイプを
成形し、長さ３０ ＋ｍ＋ｓに切断した。この成形体を
６０℃のベンゼンに浸漬して５１１ｒ保持したところ、
成形体の重量減は８．７ｗｔ％で、寸法の変化は見られ
なかった。つまりバインダーの８７．０ｗ１％はベンゼ
ンによって抽出され、残りの１３．Ｏｖｔ％はベンゼン
に不溶なポリプロピレンが主成分と考えられる。この脱
脂成形体を１２００℃×２ Ｈｒｓ焼結した結果、相対
密度９７％の焼結体が得られた。<Example-2> Calcined powder of strontium ferrite with an average particle size of 1.0μ, 90.0w1%, 1.0vt% of polypropylene as a binder, and ethylene-vinyl acetate copolymer with a vinyl acetate content of 25%3. 0w1%, polystyrene 3, OvL
915, paraffin wax 2 at m point 60°C, OvL
%, stearic acid 1. Ovt% was added to each, and a pipe with an outer diameter of 36 mm and an inner diameter of 26 yawn was formed by extraction molding, and cut into a length of 30 m+s. When this molded body was immersed in benzene at 60°C and maintained at 511r,
The weight loss of the molded body was 8.7 wt%, and no change in dimensions was observed. In other words, 87.0w1% of the binder is extracted by benzene, and the remaining 13.0w1% is extracted by benzene. Ovt% is considered to be mainly composed of polypropylene which is insoluble in benzene. As a result of sintering this degreased compact at 1200° C. for 2 hours, a sintered compact with a relative density of 97% was obtained.
この時の寸法の収縮は外内径とも約１２％で長さは約１
６％であり、変形は認められなかった。At this time, the shrinkage of the dimensions is about 12% for both the outer and inner diameters, and the length is about 1
6%, and no deformation was observed.
く比較例−２〉
実施例−２と同様に得られた成形体を比較例−２と同様
にして加熱脱脂を行ったところ、変形のない昇温速度は
やはり１０℃／ＩＩ「までであった。Comparative Example-2> When the molded body obtained in the same manner as in Example-2 was heated and degreased in the same manner as in Comparative Example-2, the temperature increase rate without deformation was still up to 10°C/II'. Ta.
〔発明の効果］
以上詳しく説明したように本発明の焼結体の製造方法に
よれば、金属またはセラミックスの粉末と有機高分子を
主成分としたバインダーとからなる成形体の脱脂時間を
大幅に短縮することが可能であり、形状の自由度の大き
な焼結製品を高品質かつ安価に提供する可能性を拓くこ
とができる。[Effects of the Invention] As explained in detail above, according to the method for manufacturing a sintered body of the present invention, the degreasing time of a molded body made of metal or ceramic powder and a binder mainly composed of an organic polymer can be significantly reduced. This opens up the possibility of providing high-quality, low-cost sintered products with a large degree of freedom in shape.
これが焼結製品の新たな用途拡大などに寄与するところ
は非常に大きく、工業上極めてＨ益である。This greatly contributes to the expansion of new uses for sintered products, and is of great industrial benefit.
手続補正書（自発）
平成／ 年２
特許庁長官 吉 １）文 毅 殿
１、事件の表示
昭和６３年特許願第３０５１５７号
月３
２、発明の名称
焼結体の製造方法
３、補正をする者
事件との関係 特許出願人
名 称 株式会社 トーキン
４、代理人 〒！０５
住 所 東京都港区西新橋１丁目４番１０号（ほか２
名）
日
６、補正の内容
イ、別紙の通り
ロ、明細書の発明の詳細な説明の欄の記載の一部を次の
ように補正します。Procedural amendment (voluntary) Heisei/2002 Director General of the Japan Patent Office Yoshi 1) Tsuyoshi Moon 1. Indication of the case Patent Application No. 305157 of 1988 3. Name of the invention Method for manufacturing sintered bodies 3. Amendments to be made Relationship with the Patent Case Patent Applicant Name Tokin 4 Co., Ltd., Agent 〒! 05 Address: 1-4-10 Nishi-Shinbashi, Minato-ku, Tokyo (and 2 others)
Date 6: Contents of the amendment (a) As per the attachment (b), a part of the statement in the detailed description of the invention column of the specification is amended as follows.
１）明細書の第２頁第３行「抽出成形」を「押出成形」
に訂正する。1) Change “extraction molding” in line 3 of page 2 of the specification to “extrusion molding”
Correct to.
２）明細書の第３頁第１行「抽出成形」を「押出成形」
に訂正する。2) Change “extraction molding” to “extrusion molding” in the first line of page 3 of the specification.
Correct to.
３）明細書の第３頁第３行「抽出成形」を「押出成形」
に訂正する。3) "Extraction molding" on page 3, line 3 of the specification is changed to "extrusion molding"
Correct to.
４）明細書の第３頁第１２行「抽出成形」を「押出成形
」に訂正する。4) In the specification, page 3, line 12, "extraction molding" is corrected to "extrusion molding".
５）明細書の第４頁第１２行「抽出成形」を「押出成形
」に訂正する。5) In the specification, page 4, line 12, "extraction molding" is corrected to "extrusion molding".
６）明細書の第４頁第１９行「抽出成形」を「押出成形
」に訂正する。6) On page 4, line 19 of the specification, "extraction molding" is corrected to "extrusion molding".
７）明細書の第５頁第５行「抽出成形」を「押出成形」
に訂正する。7) Page 5, line 5 of the specification, “extraction molding” is changed to “extrusion molding”
Correct to.
（別 紙）
特許請求の範囲
１、金属もしくはセラミックスの粉末に、有機高分子を
主成分とするバインダーを、混合、混練、ペレット化し
て得られる混和物を射出成形もしくは押出成形により所
望の形状の成形体とした後、所定の白゛機溶媒により脱
脂し、焼結することにより焼結体を製造する方法におい
て、
前記有機高分子は、前記有機溶媒に対して、可溶性成分
と不溶性成分とを有することを特徴とする焼結体の製造
方法。(Attachment) Claim 1: A mixture obtained by mixing, kneading, and pelletizing metal or ceramic powder with a binder whose main component is an organic polymer is molded into a desired shape by injection molding or extrusion molding. In the method of manufacturing a sintered body by forming a molded body, degreasing it with a predetermined whitening solvent, and sintering it, the organic polymer has a soluble component and an insoluble component in the organic solvent. A method for producing a sintered body, comprising:
Claims (1)
主成分とするバインダーを、混合、混練、ペレット化し
て得られる混和物を射出成形もしくは抽出成形により所
望の形状の成形体とした後、所定の有機溶媒により脱脂
し、焼結することにより焼結体を製造する方法において
、 前記有機高分子は、前記有機溶媒に対して、可溶性成分
と不溶性成分とを有することを特徴とする焼結体の製造
方法。1. A mixture obtained by mixing, kneading, and pelletizing metal or ceramic powder with a binder whose main component is an organic polymer is molded into a desired shape by injection molding or extraction molding, and then mixed with a specified organic solvent. A method for producing a sintered body by degreasing and sintering, wherein the organic polymer has a soluble component and an insoluble component in the organic solvent. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63305157A JPH02153857A (en) | 1988-12-03 | 1988-12-03 | Production of sintered material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63305157A JPH02153857A (en) | 1988-12-03 | 1988-12-03 | Production of sintered material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02153857A true JPH02153857A (en) | 1990-06-13 |
Family
ID=17941755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63305157A Pending JPH02153857A (en) | 1988-12-03 | 1988-12-03 | Production of sintered material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02153857A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002265790A (en) * | 2001-03-13 | 2002-09-18 | Ngk Insulators Ltd | Composition for extrusion molding of inorganic material powder |
| JP2014529677A (en) * | 2011-08-02 | 2014-11-13 | ゲーカーエンシンター メタルズ ホールディング ゲーエムベーハーＧｋｎ Ｓｉｎｔｅｒ Ｍｅｔａｌｓ Ｈｏｌｄｉｎｇ Ｇｍｂｈ | Binder mixture for the production of molded parts using injection molding |
-
1988
- 1988-12-03 JP JP63305157A patent/JPH02153857A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002265790A (en) * | 2001-03-13 | 2002-09-18 | Ngk Insulators Ltd | Composition for extrusion molding of inorganic material powder |
| JP4628569B2 (en) * | 2001-03-13 | 2011-02-09 | 日本碍子株式会社 | Composition for extrusion molding of inorganic substance powder |
| JP2014529677A (en) * | 2011-08-02 | 2014-11-13 | ゲーカーエンシンター メタルズ ホールディング ゲーエムベーハーＧｋｎ Ｓｉｎｔｅｒ Ｍｅｔａｌｓ Ｈｏｌｄｉｎｇ Ｇｍｂｈ | Binder mixture for the production of molded parts using injection molding |
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