JPH04247808A - Production of composite sintered article - Google Patents
Production of composite sintered articleInfo
- Publication number
- JPH04247808A JPH04247808A JP15066991A JP15066991A JPH04247808A JP H04247808 A JPH04247808 A JP H04247808A JP 15066991 A JP15066991 A JP 15066991A JP 15066991 A JP15066991 A JP 15066991A JP H04247808 A JPH04247808 A JP H04247808A
- Authority
- JP
- Japan
- Prior art keywords
- binder
- composite sintered
- product
- kneaded
- molecular weight
- 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 37
- 238000004519 manufacturing process Methods 0.000 title claims description 20
- 239000011230 binding agent Substances 0.000 claims abstract description 32
- 239000002184 metal Substances 0.000 claims abstract description 23
- 229910052751 metal Inorganic materials 0.000 claims abstract description 23
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 22
- 239000000956 alloy Substances 0.000 claims abstract description 22
- 238000001746 injection moulding Methods 0.000 claims abstract description 21
- 239000000843 powder Substances 0.000 claims abstract description 17
- 239000012298 atmosphere Substances 0.000 claims abstract description 13
- 230000001681 protective effect Effects 0.000 claims abstract description 10
- 239000000314 lubricant Substances 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 17
- 238000002347 injection Methods 0.000 claims description 13
- 239000007924 injection Substances 0.000 claims description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 238000004898 kneading Methods 0.000 claims description 4
- 150000001336 alkenes Chemical class 0.000 claims description 3
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims description 3
- 229920001083 polybutene Polymers 0.000 claims description 3
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims 1
- 229910000640 Fe alloy Inorganic materials 0.000 claims 1
- 239000011812 mixed powder Substances 0.000 claims 1
- 239000000203 mixture Substances 0.000 abstract description 8
- 238000005245 sintering Methods 0.000 abstract description 6
- 239000000047 product Substances 0.000 description 36
- 238000004663 powder metallurgy Methods 0.000 description 9
- 150000002739 metals Chemical class 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 5
- 238000000465 moulding Methods 0.000 description 3
- 239000004014 plasticizer Substances 0.000 description 3
- 239000001993 wax Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 238000005238 degreasing Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910020676 Co—N Inorganic materials 0.000 description 1
- 229910017061 Fe Co Inorganic materials 0.000 description 1
- 229910001111 Fine metal Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000012300 argon atmosphere Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】この発明は、複合焼結品の製造方
法に関するものである。さらに詳しくは、この発明は、
異種の金属または合金等の組合わせの自由度を高め、高
生産性で多機能性を実現することのできる複合焼結品の
製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing composite sintered products. More specifically, this invention
The present invention relates to a method for manufacturing a composite sintered product that increases the degree of freedom in combining different metals or alloys, and achieves high productivity and multifunctionality.
【０００２】0002
【従来の技術とその課題】高密度、かつ高強度を有し、
三次元の複雑形状の金属製品を量産するための技術とし
て、射出成形粉末冶金法が最近注目されており、各種の
技術分野で広くその実用化が進展しつつある。この射出
成形粉末冶金法は、一般的には次のような工程によって
構成されている。[Prior art and its problems] High density and high strength,
BACKGROUND ART Injection molding powder metallurgy has recently attracted attention as a technology for mass-producing metal products with three-dimensional complex shapes, and its practical application is progressing widely in various technical fields. This injection molding powder metallurgy method generally consists of the following steps.
【０００３】すなわち、まず、平径粒径数μｍ〜数十μ
ｍ程度の微細な金属または合金の粉末と有機系の結合剤
とを所定の割合で均一に混練し、射出成形装置によって
所定形状の金型キャビティー中に射出成形し、金型から
脱型して射出成形体を得る。次いで、有機系のバインダ
を昇華法、溶剤抽出法、加熱分解法等によって除去し、
さらに不活性あるいは還元性の保護雰囲気下、あるいは
真空下に加熱焼結する。 通常、この焼結によって、
射出時の成形体よりも体積で１０％以上収縮し、理論値
の９５％以上の密度の焼結品が得られている。また、必
要に応じて、さらにサイジィング、コイニング、熱処理
、切削加工等の後処理を施して最終製品としてもいる。[0003] That is, first, the average grain size is several μm to several tens of μm.
Fine metal or alloy powder of about 100 m in diameter and an organic binder are uniformly kneaded in a predetermined ratio, injection molded into a mold cavity of a predetermined shape using an injection molding machine, and removed from the mold. An injection molded product is obtained. Next, the organic binder is removed by sublimation, solvent extraction, thermal decomposition, etc.
Further, it is heated and sintered under an inert or reducing protective atmosphere or under vacuum. This sintering usually results in
A sintered product is obtained which shrinks by 10% or more in volume compared to the molded product at the time of injection and has a density of 95% or more of the theoretical value. Further, if necessary, post-processing such as sizing, coining, heat treatment, cutting, etc. is further performed to obtain a final product.
【０００４】このような工程からも明らかなように、射
出成形粉末冶金法は、金属粉末とバインダとの混練物を
金型内において成形する点で、従来より知られているプ
レス式粉末冶金法と技術的に共通している点がある。し
かしながら一方で、この射出成形粉末冶金法は、ア）添
加する有機系結合剤の量が格段に多く、イ）成形は射出
によりなされ、しかも、ウ）三次元の複雑形状の成形体
が容易に得られること等の点においてプレス式粉末冶金
法とは大きく相違している。[0004] As is clear from these steps, the injection molding powder metallurgy method is different from the conventionally known press-type powder metallurgy method in that a kneaded product of metal powder and a binder is molded in a mold. There are some technical similarities. However, on the other hand, this injection molding powder metallurgy method (a) requires a much larger amount of organic binder to be added, (b) molding is done by injection, and c) it is easier to produce molded bodies with three-dimensional complex shapes. It is greatly different from the press-type powder metallurgy method in terms of what can be obtained.
【０００５】このように、射出成形粉末冶金法は特徴の
ある方法であるが、射出成形法であるが故の制約があっ
た。この制約は、射出成形では三次元複雑形状品の成形
が容易であるものの、異種の金属または合金を用いての
複合品の製造が困難であるという点にある。すなわち、
射出成形は、素材の均一性が技術的に前提となることか
ら、複合品の成形には本質的な限界がある。仮に異種材
料の複合品成形が考えられたとしても、その接合界面の
接合強度はほとんど期待できないと考えられていた。As described above, the injection molding powder metallurgy method is a unique method, but it has limitations because it is an injection molding method. This limitation lies in the fact that although injection molding allows for easy molding of three-dimensional complex shaped products, it is difficult to manufacture composite products using different metals or alloys. That is,
Injection molding is technically based on the uniformity of the material, so there are inherent limitations in molding composite products. Even if it were possible to mold a composite product of dissimilar materials, it was thought that the bonding strength at the bonding interface could hardly be expected.
【０００６】一方、プレス式粉末冶金法では複合品の製
造は可能であるものの、三次元の複雑形状品を製造する
ことは極めて困難であった。複合成形品については、金
属または合金の種類に応じて特有の機能を複合的に発現
することのできるものとして、機能的に、しかも高価な
機能材料と低価な材料との組合せが自在になるものとし
て期待されているが、これまでの技術によっては、三次
元複雑形状の複合品の製造はほとんど不可能であるのが
実情であった。 この発明は、以上の通りの事情に鑑
みてなされたものであり、従来の射出成形粉末冶金法の
特徴を生かしつつ、これまでの方法によっては成形困難
であった三次元の複雑形状を有する２種以上の異種金属
または合金から、容易に、かつ、高性能品として製造す
ることのできる新しい複合品、特に、その複合焼結品の
製造方法を提供することを目的としている。On the other hand, although it is possible to manufacture composite products using the press-type powder metallurgy method, it is extremely difficult to manufacture three-dimensional complex-shaped products. Composite molded products can exhibit unique functions in combination depending on the type of metal or alloy, and can be functionally combined with expensive functional materials and low-cost materials. However, the reality is that it is almost impossible to manufacture composite products with complex three-dimensional shapes using existing technology. This invention was made in view of the above-mentioned circumstances, and while making use of the characteristics of the conventional injection molding powder metallurgy method, it is possible to create a molded product with a three-dimensional complex shape that is difficult to mold using conventional methods. The object of the present invention is to provide a new composite product that can be easily manufactured as a high-performance product from more than one kind of dissimilar metals or alloys, and in particular, a method for manufacturing the composite sintered product.
【０００７】[0007]
【課題を解決するための手段】この発明は、上記の通り
の課題を解決するものとして、金属または合金の粉末を
高分子量または超高分子量のバインダと混合・混練して
射出成形した成形品を所定の型内に配置し、異種金属ま
たは合金の粉末を前記バインダと混合・混練したものを
前記型内に射出成形し、次いで、得られた複合成形体を
保護雰囲気下に加熱してバインダを除去し、保護雰囲気
下または真空中において加熱焼結してなることを特徴と
する複合焼結品の製造方法を提供する。[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention provides a molded product made by injection molding a mixture of metal or alloy powder with a high molecular weight or ultra high molecular weight binder. Placed in a predetermined mold, powder of different metals or alloys is mixed and kneaded with the binder and then injection molded into the mold, and then the resulting composite molded body is heated in a protective atmosphere to remove the binder. Provided is a method for producing a composite sintered product, characterized in that the composite sintered product is removed and heated and sintered in a protective atmosphere or in a vacuum.
【０００８】この発明において使用することのできる金
属、合金の種類については特段の限定はないが、多機能
性を実現するとの観点に沿って、その組合せを選択する
。たとえば歯車の成形を例にとると、耐摩耗性が要求さ
れる歯面部には耐摩耗合金を用い、それ以外にはより安
価な鉄系の金属あるいは合金を用いるなどの対応が可能
となる。[0008] There are no particular limitations on the types of metals and alloys that can be used in the present invention, but the combinations thereof are selected from the viewpoint of realizing multifunctionality. For example, when forming gears, it is possible to use wear-resistant alloys for the tooth surface parts that require wear resistance, and use cheaper iron-based metals or alloys for the rest.
【０００９】耐摩耗合金に代わるものとしてＷＣ５０重
量％程度以上を含有する炭化物等を、Ｆｅ、Ｃｏ、Ｎｉ
の鉄系金属または合金を結合材として、これにさらにバ
インダを混合・混練して使用することもできる。射出成
形のために、金属または合金の粉末に混合・混練するバ
インダとしては、分子量１００，０００ 〜５００，０
００ 程度の高分子量バインダ、あるいは分子量１，０
００，０００ 〜３，０００，０００ 程度の超高分子
量バインダを好適なものとして用いることができる。高
分子量のバインダとしては、たとえばエチレン酢酸ビニ
ル共重合樹脂が、また、超高分子量のバインダとしては
、たとえばポリブテンなどを例示することができる。As an alternative to wear-resistant alloys, carbides containing about 50% by weight or more of WC such as Fe, Co, Ni
It is also possible to use iron-based metals or alloys as a binding material and further mix and knead a binder thereto. The binder to be mixed and kneaded with metal or alloy powder for injection molding has a molecular weight of 100,000 to 500,0.
00 high molecular weight binder or molecular weight 1.0
Ultra-high molecular weight binders of the order of 00,000 to 3,000,000 are preferably used. Examples of the high molecular weight binder include ethylene vinyl acetate copolymer resin, and examples of the ultra high molecular weight binder include polybutene.
【００１０】このバインダには、成形性の向上のために
滑剤、可塑剤等の他の成分を添加することもできる。た
とえば滑剤としては、オレフィンワックスを好ましいも
のとして用いることができる。一般的には、これらの有
機配合成分は、およそ１５重量％以下で配合するのが好
ましい。あまり多すぎる場合には、射出成形性がそこな
われるので好ましくない。[0010] Other components such as lubricants and plasticizers can also be added to this binder in order to improve moldability. For example, as a lubricant, olefin wax can be preferably used. Generally, it is preferred that these organic ingredients be incorporated in an amount of approximately 15% by weight or less. If the amount is too large, injection moldability will be impaired, which is not preferable.
【００１１】混合・混練に際しては、金属または合金の
粉末は、その粒径を３０μｍ以下、より好ましくは１０
μｍ以下とする。より微粒化された粉末は、表面エネル
ギーが高いことから、この発明の複合焼結品の製造には
好適である。射出成形は、一般的には２５０ ℃以下、
より好ましくは１８０ ℃以下の温度条件下に行うのが
好ましい。[0011] When mixing and kneading, the particle size of the metal or alloy powder should be 30 μm or less, more preferably 10 μm or less.
It should be less than μm. A more finely divided powder has a high surface energy and is therefore suitable for producing the composite sintered product of the present invention. Injection molding is generally performed at temperatures below 250°C.
More preferably, it is carried out at a temperature of 180° C. or lower.
【００１２】射出成形によって成形した複合成形体は、
次いで脱脂処理として保護雰囲気に加熱し、前記高分子
量または超高分子量のバインダを好ましくはその残存量
が１重量％以下にまで除去する。この時の雰囲気は、窒
素、アルゴン等の不活性ガスや水系等の還元性ガスによ
って保護雰囲気とする。通常、この時の加熱は、５〜５
０℃／時程度の速度で昇温し、４５０ 〜５５０ ℃程
度まで加熱する。[0012] The composite molded article formed by injection molding is
Next, as a degreasing treatment, heating is performed in a protective atmosphere to remove the high molecular weight or ultra high molecular weight binder, preferably to a residual amount of 1% by weight or less. The atmosphere at this time is a protective atmosphere using an inert gas such as nitrogen or argon, or a reducing gas such as water. Usually, the heating at this time is 5 to 5
The temperature is raised at a rate of about 0°C/hour to about 450 to 550°C.
【００１３】次いで、この脱脂処理した複合成形体は、
同様の保護雰囲気下、もしくは真空下に加熱して焼結す
る。焼結は、たとえば１２００〜１５００℃程度におい
て行われる。もちろん、素材となる金属または合金の種
類によってこの焼結温度や焼結時間は、相違してくる。
射出成形、そして焼結のための装置、金型等については
従来公知の手段をはじめとする適宜なものを使用するこ
とができる。操作条件の細部についても様々な態様が可
能である。Next, this degreased composite molded article is
Sinter by heating under a similar protective atmosphere or under vacuum. Sintering is performed, for example, at about 1200 to 1500°C. Of course, the sintering temperature and sintering time vary depending on the type of metal or alloy used as the material. Appropriate equipment including conventionally known means can be used for injection molding and sintering equipment, molds, and the like. Various aspects are also possible regarding the details of the operating conditions.
【００１４】次に実施例を示し、さらに詳しくこの発明
の複合焼結金とその製造方法について説明する。Next, examples will be shown and the composite sintered metal of the present invention and its manufacturing method will be explained in more detail.
【００１５】[0015]
【実施例】実施例１
図１に示した工程に沿って複合焼結品を製造する。
＜ａ＞ まず、平径粒径４μｍのＷＣ９０重量％の炭
化物粉末を、結合剤としてのＣｏ粉末（１．４ μｍ）
の１０重量％とともに平均分子量約２，０００，０００
の超高分子量のポリブデン、オレフィンワックスおよ
び可塑剤と混合・混練する。この時の有機成分の配合量
は６重量％とする。EXAMPLES Example 1 A composite sintered product was manufactured according to the steps shown in FIG. <a> First, a carbide powder containing 90% by weight of WC with a flat particle size of 4 μm was mixed with Co powder (1.4 μm) as a binder.
average molecular weight of about 2,000,000 with 10% by weight of
Mix and knead with ultra-high molecular weight polybutene, olefin wax and plasticizer. At this time, the blending amount of the organic component is 6% by weight.
【００１６】この混練物を、図１に示したように、金型
（１）（２）内に射出成形し、脱型した後に、ゲート（
３）およびスプール（４）を除去し、リング状成形体（
５）を得る。この射出成形時の温度は１８０ ℃とした
。
＜ｂ＞ このリング状成形体（５）を、別の金型（６
）（７）に配置し、Ｆｅ−Ｃｏ合金の粉末（１２μｍ）
を、上記同様のバインダ、ワックスおよび可塑剤の６重
量％と混合・混練したものを１９０ ℃の温度において
、射出成形する。As shown in FIG. 1, this kneaded material is injection molded into molds (1) and (2), and after being removed from the mold, a gate (
3) and the spool (4) are removed, and the ring-shaped molded body (
5) is obtained. The temperature during this injection molding was 180°C. <b> This ring-shaped molded body (5) is placed in another mold (6
) (7) and Fe-Co alloy powder (12 μm)
was mixed and kneaded with 6% by weight of the same binder, wax and plasticizer as described above, and the mixture was injection molded at a temperature of 190°C.
【００１７】なお、前記リング状成形体（５）を金型（
６）（７）に配置する場合、この成形体（５）と金型（
６）（７）との寸法のクリアランスがあり、このまま射
出成形すると成形体（５）は射出圧力によって破壊され
る危険がある。このため、成形体（５）をあらかじめ室
温以上５０℃程度に加熱して金型（６）（７）内に配置
するのが好ましい。
＜ｃ＞ 射出成形後にゲート処理し、複合化されたリ
ング状成形体（８）を得る。[0017] The ring-shaped molded body (5) is placed in a mold (
6) When placed in (7), this molded body (5) and the mold (
6) There is a dimensional clearance with (7), and if injection molding is carried out as is, there is a risk that the molded body (5) will be destroyed by the injection pressure. For this reason, it is preferable to heat the molded body (5) in advance to about 50° C. above room temperature and place it in the molds (6) and (7). <c> After injection molding, gate treatment is performed to obtain a composite ring-shaped molded product (8).
【００１８】この得られた成形体（８）を、昇温速度２
０℃／時で昇温して５２０ ℃に加熱し、脱脂処理した
。この時、水素ガス雰囲気下で処理した。その後、１４
００℃までは昇温速度１００ ℃／時で昇温した。なお
、１０００℃までは水素ガス雰囲気下で処理した。次い
で、５×１０−４Ｔｏｒｒの真空下に１４００℃で焼結
した。The obtained molded body (8) was heated at a heating rate of 2
The temperature was increased to 520°C at a rate of 0°C/hour to perform a degreasing treatment. At this time, the treatment was carried out under a hydrogen gas atmosphere. After that, 14
The temperature was raised at a rate of 100°C/hour up to 00°C. Note that the treatment was performed under a hydrogen gas atmosphere up to 1000°C. Then, it was sintered at 1400° C. under a vacuum of 5×10 −4 Torr.
【００１９】得られたリング状複合焼結品（９）の内側
リング（１０）と外側リング（１１）との密着は強固で
、実用製品として何ら問題はなかった。
実施例２
複合焼結品として歯車を製造した。この場合は、図２に
示したように、実施例１とは逆に、まずＦｅ−Ｃｏ−Ｎ
ｉ合金の粉末から歯車の軸周辺部の成形体（１２）を射
出成形し、これを所定の金型内に配置して超硬合金粉末
を用いてのギヤー形状部（１３）の射出成形を行った。
ギヤー形状部（１３）の射出成形は、ピンゲート方式を
採用した。このため、ピンとゲートとの位置を合致させ
ておくために、位置止めピンを設けた。The inner ring (10) and outer ring (11) of the obtained ring-shaped composite sintered product (9) had strong adhesion, and there were no problems as a practical product. Example 2 A gear was manufactured as a composite sintered product. In this case, as shown in FIG. 2, contrary to Example 1, Fe-Co-N
A molded body (12) around the shaft of the gear is injection molded from i-alloy powder, this is placed in a predetermined mold, and the gear shape part (13) is injection molded using the cemented carbide powder. went. A pin gate method was used for injection molding of the gear shaped part (13). For this reason, a positioning pin was provided to keep the pin and gate aligned.
【００２０】アルゴン雰囲気下に脱脂し、次いで焼結し
て所定の歯車焼結品（１４）を得た。強度特性は優れた
ものであった。[0020] The product was degreased in an argon atmosphere and then sintered to obtain a predetermined sintered gear product (14). The strength properties were excellent.
【００２１】[0021]
【発明の効果】この発明の製造により、以上詳しく説明
した通り、三次元の複雑形状品であっても、異種金属ま
たは合金間の接合強度の大きな複合焼結品が提供される
。多機能成形品として今後の応用分野の拡大が期待され
る。すなわち、
１） 全く異なった機能を一体化し、耐磨耗と耐食性
、被削性等々の諸機能を複合化することができる。
２） 安価な材料の部分使用が可能となり、省コスト
、省資源効果が優れたものとなる。As explained in detail above, the production of the present invention provides a composite sintered product with high bonding strength between dissimilar metals or alloys, even if it is a three-dimensional complex-shaped product. As a multifunctional molded product, it is expected that its application fields will expand in the future. That is, 1) It is possible to integrate completely different functions and combine various functions such as wear resistance, corrosion resistance, machinability, etc. 2) It becomes possible to partially use inexpensive materials, resulting in excellent cost-saving and resource-saving effects.
【図１】[Figure 1]
【図２】各々、この発明の複合焼結品の製造例を示した
工程図である。FIG. 2 is a process diagram showing an example of manufacturing a composite sintered product of the present invention.
１，２ 金型 ３ ゲート ４ スプール ５ リング状成形体 ６，７ 金型 ８ リング状成形体 ９ リング状複合焼結品 １０ 内側リング １１ 外側リング １２ 軸周辺部成形体 １３ ギヤー形状部 １４ 歯車焼結品 1, 2 Mold 3 Gate 4 Spool 5 Ring-shaped molded body 6,7 Mold 8 Ring-shaped molded body 9 Ring-shaped composite sintered product 10 Inner ring 11 Outer ring 12 Molded body around shaft 13 Gear shape part 14 Sintered gear products
Claims (8)
は超高分子量のバインダと混合・混練して射出成形した
成形品を所定の型内に配置し、異種金属または合金の粉
末を前記バインダと混合・混練したものを前記型内に射
出成形し、次いで、得られた複合成形体を保護雰囲気下
に加熱してバインダを除去し、保護雰囲気下または真空
中において加熱焼結してなることを特徴とする複合焼結
品の製造方法。Claim 1: A molded product obtained by mixing and kneading metal or alloy powder with a high molecular weight or ultra high molecular weight binder and injection molding is placed in a predetermined mold, and a dissimilar metal or alloy powder is mixed with the binder. - The kneaded product is injection molded into the mold, the resulting composite molded body is then heated in a protective atmosphere to remove the binder, and the product is heated and sintered in a protective atmosphere or in a vacuum. A method for manufacturing a composite sintered product.
００ の高分子量のバインダを混合・混練する請求項１
の複合焼結品の製造方法。Claim 2: Molecular weight 100,000 to 500,0
Claim 1: Mixing and kneading a binder with a high molecular weight of 0.00
A method for manufacturing a composite sintered product.
ンダとする請求項２の複合焼結品の製造方法。3. The method for producing a composite sintered product according to claim 2, wherein the binder is an ethylene vinyl acetate copolymer resin.
００，０００ の超高分子量のバインダを混合・混練す
る請求項１の複合焼結品の製造方法。Claim 4: Molecular weight 1,000,000 to 3,0
2. The method of manufacturing a composite sintered product according to claim 1, further comprising mixing and kneading a binder having an ultra-high molecular weight of 0.0000%.
の複合焼結品の製造方法。Claim 5: Claim 4 wherein polybutene is used as the binder.
A method for manufacturing a composite sintered product.
・混練する請求項１の複合焼結品の製造方法。6. The method for producing a composite sintered product according to claim 1, wherein olefin wax is mixed and kneaded as a lubricant.
合金または金属炭酸化物と鉄系元素の金属または合金の
結合材とからなる混合粉末をバインダと混合・混練して
射出成形した成形品の製造方法。7. The composite sintered product according to claim 1, wherein a mixed powder consisting of a cemented carbide or metal carbonate and a binder of a metal or alloy of iron-based elements is mixed and kneaded with a binder and then injection molded. method of manufacturing the product.
た後に、鉄系元素金属または合金の粉末をバインダと混
合・混練したものを型内に射出成形してなる請求項７の
高硬度複合焼結品の製造方法。8. The high-hardness composite sintered product according to claim 7, which is obtained by placing the injection-molded product in the mold in advance, and then injecting powder of iron-based elemental metal or alloy mixed and kneaded with a binder into the mold. A method of manufacturing a product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15066991A JPH04247808A (en) | 1991-06-21 | 1991-06-21 | Production of composite sintered article |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15066991A JPH04247808A (en) | 1991-06-21 | 1991-06-21 | Production of composite sintered article |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP02101410 Division |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04247808A true JPH04247808A (en) | 1992-09-03 |
Family
ID=15501891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15066991A Pending JPH04247808A (en) | 1991-06-21 | 1991-06-21 | Production of composite sintered article |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04247808A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016211042A (en) * | 2015-05-11 | 2016-12-15 | 株式会社アテクト | Method for producing composite sintered compact |
| KR102357241B1 (en) * | 2021-11-01 | 2022-02-08 | 최재성 | Method For Manufacturing Powder Metallurgical Product Using Compact And Powder Metallurgical Product Using Molded Article Manufactured Thereby |
-
1991
- 1991-06-21 JP JP15066991A patent/JPH04247808A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016211042A (en) * | 2015-05-11 | 2016-12-15 | 株式会社アテクト | Method for producing composite sintered compact |
| KR102357241B1 (en) * | 2021-11-01 | 2022-02-08 | 최재성 | Method For Manufacturing Powder Metallurgical Product Using Compact And Powder Metallurgical Product Using Molded Article Manufactured Thereby |
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