JPH02129301A - Material for forming metal powder, metal powder product and manufacture thereof - Google Patents

Material for forming metal powder, metal powder product and manufacture thereof

Info

Publication number
JPH02129301A
JPH02129301A JP63284141A JP28414188A JPH02129301A JP H02129301 A JPH02129301 A JP H02129301A JP 63284141 A JP63284141 A JP 63284141A JP 28414188 A JP28414188 A JP 28414188A JP H02129301 A JPH02129301 A JP H02129301A
Authority
JP
Japan
Prior art keywords
metal powder
powder
binder
product
metal
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
JP63284141A
Other languages
Japanese (ja)
Inventor
Akio Matsuzaki
昭雄 松崎
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.)
Casio Computer Co Ltd
Original Assignee
Casio Computer Co Ltd
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 Casio Computer Co Ltd filed Critical Casio Computer Co Ltd
Priority to JP63284141A priority Critical patent/JPH02129301A/en
Publication of JPH02129301A publication Critical patent/JPH02129301A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To manufacture a material for forming metal powder, which forms a product having excellent design, by mixing the metal powder, different color powders having almost the same m. p. as this metal and a binder of thermoplastic resin. CONSTITUTION:The metal powder (stainless steel, brass, etc., about 8.5mu average particle diameter), different color powder (tungsten, glass, ceramic, etc.,) having almost the same or higher m. p. than that of this metal powder and the binder of the thermoplastic resin (EVA, etc.,) are mixed. Then, about 10 - 15% the other color powder and about 15 - 20% the binder are blended to the metal powder. Successively, this mixed material is uniformly kneaded, injected and molded, and after making the forming product having the prescribed shape, this is heated to remove the binder and sintered at almost the same temp. as the m. p. of the metal powder. By this method, colors other than that of the metal powder can be produced and the product having excellent design is obtd.

Description

【発明の詳細な説明】 [発明の技術分デ?] この発明は金属粉末成形用材料および金属粉末製品並び
にその製造方法に関する。
[Detailed description of the invention] [Technical portion of the invention?] ] The present invention relates to a metal powder molding material, a metal powder product, and a method for manufacturing the same.

[従来技術とその問題点] 近年、一般のプラスチックと同じように金属粉末をプラ
スチック射出成形機で射出成形した後、焼結して製品に
仕上げる金属粉末の射出成形焼結法が開発されている。
[Prior art and its problems] In recent years, an injection molding and sintering method for metal powder has been developed, in which metal powder is injection molded using a plastic injection molding machine and then sintered to finish the product in the same way as general plastics. .

この方法は、粉末冶金法とエンジニャプラスチックの複
合技術であり、以下のようにして製品を作る。すなわち
、金属粉末とバインダ(熱可塑性樹脂とワックスとを混
合したもの)とを混練して流動性のある混合物を作り、
この混合物を射出成形機で射出成形して成形品を作り、
この成形品を加熱してバインダを除去した後、成形品を
焼結させることにより、製品を作っている。
This method is a combination of powder metallurgy and engineered plastics, and the product is manufactured as follows. That is, metal powder and a binder (a mixture of thermoplastic resin and wax) are kneaded to create a fluid mixture.
This mixture is injection molded using an injection molding machine to make a molded product.
The product is manufactured by heating the molded product to remove the binder and then sintering the molded product.

しかしながら、このような方法で製造された製品は、金
属粉末と同じ色にしかならず、そのため腕時計ケースや
管楽器等の金属部品に用いた際には色相がtli純とな
り、デザイン性に乏しいという問題がある。
However, products manufactured by this method only have the same color as the metal powder, so when used for metal parts such as watch cases and wind instruments, the hue becomes tli pure and there is a problem that the design is poor. .

[発明の目的] この発榎1は一ト述した・19情に鑑みてなされたもの
で、その[1的とするところは、金属粉末以外の色を出
すことができる金属粉末成形材料および金属粉末製品の
製造方法を提供するとともに、デザイン性に優れた金属
粉末製品を提供することにある。
[Objective of the Invention] This invention has been made in view of the above-mentioned circumstances, and its object is to develop metal powder molding materials and metal powders that can produce colors other than metal powders. The purpose of the present invention is to provide a method for manufacturing powder products as well as metal powder products with excellent design.

[発IJ1の要点] この発明の金属粉末成形材料は、金属粉末と、この金属
粉末の融点とほぼ同じかもしくはそれ以−1−の融点を
41シ1[つ1:記金属粉末と色の異なる異色粉末と、
熱可塑性樹脂のバインダとからなるものである。
[Main Points of IJ1] The metal powder molding material of the present invention has a melting point of 41C which is approximately the same as or higher than the melting point of the metal powder. With different colored powders,
It consists of a thermoplastic resin binder.

また、この発明の金属粉末製品は、1−述した金属粉末
成形材料の混合体で成形され、この金属粉末成形材料中
のバインダが除去されたうえ焼結してなるものである。
Further, the metal powder product of the present invention is formed by molding the mixture of the metal powder molding material mentioned above, removing the binder from the metal powder molding material, and then sintering the product.

さらに、この発IIの金属粉末製品の製造方法は、−[
−述した金属粉末成形材料を混練して混合体を作り、こ
の混合体で所定形状の成形品を作り、この成形品を加熱
して全屈粉末成形材ネ1中のバインダを除去した後、こ
の成形品を金属粉末の融点とほぼ同じ温度で焼結する方
法である。
Furthermore, the method for manufacturing the metal powder product of Formation II is as follows: -[
- Knead the metal powder molding material described above to make a mixture, make a molded product of a predetermined shape from this mixture, heat this molded product to remove the binder in the full bending powder molding material 1, In this method, this molded article is sintered at approximately the same temperature as the melting point of the metal powder.

[実施例] 一ド、第1図を参照して、この発IIの−・実施例を製
造−r程順に説明する。
[Example] First, with reference to FIG. 1, an example of the invention II will be explained in the order of manufacturing steps.

まず、金属粉末成形用材料を用意する。この金属粉末成
形用材ネ1は金属粉末と、異色粉末と、バインダとから
なる。金属粉末としては、例えばステンレス(SO5)
や黄銅(Bs)等の粉末であり、ステンレス粉末は銀色
をすし、黄銅粉末は金色を呈するが、この実施例ではス
テンレス粉末を使用する。このステンレス粉末は5US
304Lの粉末で、融点が約1250℃程度で、平均粒
子径が約8.5ルm I%j後のもである。異色粉末は
金属粉末と異なる色で、しかも金属粉末の融点とほぼ同
じかあるいはそれ以りの融点を41するものであり、例
えば、石、貝殻、耐火れんが、ガラス(融点の高い石英
ガラス、シリカガラス等)、セラミック、タングステン
、炭素、超合金等の粉末(石の場合は砂)であり、この
実施例ではタングステン(W)の粉末を使用する。この
タングステン粉末は黒色で平均粒子径が上述したステン
レス粉末と同じか、それ以下のものであり、その混合比
は10%−15%程度である。バインダはステンレス粉
末とタングステン粉末とが混練された際に流動性をもた
せるものであり1例えば、EVA (エチレン酢酸ビニ
ル共重合体)、アクリル系樹脂、ワックス等を混合した
ものである。この、<インダの混合比は、混練された際
に流動性を有し、かつ焼結前に除去し易くするために、
約15z〜20%程度が9!ましい。
First, a metal powder molding material is prepared. This metal powder molding material 1 consists of metal powder, different color powder, and a binder. As the metal powder, for example, stainless steel (SO5)
Stainless steel powder has a silver color and brass powder has a gold color, but in this example, stainless steel powder is used. This stainless steel powder is 5US
304L powder with a melting point of about 1250°C and an average particle size of about 8.5 lm after I%j. Different-colored powders have a color different from that of metal powders and have a melting point that is approximately the same as or higher than that of metal powders, such as stones, shells, refractory bricks, glass (high melting point quartz glass, silica, etc.). (glass, etc.), ceramic, tungsten, carbon, superalloy, etc. powder (sand in the case of stone), and in this example, tungsten (W) powder is used. This tungsten powder is black in color and has an average particle size equal to or smaller than the above-mentioned stainless steel powder, and its mixing ratio is about 10% to 15%. The binder provides fluidity when the stainless steel powder and tungsten powder are kneaded together, and is, for example, a mixture of EVA (ethylene vinyl acetate copolymer), acrylic resin, wax, and the like. This mixing ratio of <inder is such that it has fluidity when kneaded and is easy to remove before sintering.
Approximately 15z~20% is 9! Delicious.

次に、このような金属粉末成形用材ネ4を均一にr、1
練する。すなわち、金属粉末と異色粉末と/へ、インダ
とを混練機により均一・な分散状y!iに混練し、適1
gの流動性を41する混合体を作る。そして、この混合
体を射出成形機で所定の形状に射出成形して成形品を作
る。すなわち、射出成形機はプラスチック射出成形機と
ほぼ同じであり、混合体(射出原料)は成形機のシリン
ダで加熱溶融し、スクリューを介して金型内に売場され
るが、スクリューや、金型のスプル、ランナ、ゲート等
はプラスチックのそれよりも若干大きく形成されている
Next, the metal powder molding material 4 is uniformly spread at r, 1.
Practice. That is, the metal powder, the different color powder, and the indica are uniformly dispersed by a kneading machine. Mix it with i and mix well.
A mixture with a fluidity of 41 g is prepared. This mixture is then injection molded into a predetermined shape using an injection molding machine to produce a molded product. In other words, an injection molding machine is almost the same as a plastic injection molding machine. The sprues, runners, gates, etc. of the plastic are slightly larger than those of the plastic.

このようにして射出成形された成形品は脱バインダ1程
で成形品中のバインダを除去する。
The molded product injection-molded in this manner is subjected to binder removal step 1, in which the binder in the molded product is removed.

この場合には、成形品を酸化雰囲気中において15℃/
Hrで徐々に23時間程度加熱して350”C程度まで
加熱した後、この状I! (350℃程度の状態)でさ
らに2時間程度加熱する。これにより、成形品中からバ
インダが溶解して溶出および蒸発し除去される。この後
、バインダが除去された成形品を真空中で焼結させる。
In this case, the molded product is placed in an oxidizing atmosphere at 15°C/
After gradually heating the molded product for about 23 hours to about 350"C, it is heated for about 2 hours in this state I! (at about 350℃). As a result, the binder is dissolved from the molded product. The binder is removed by elution and evaporation.The molded article from which the binder has been removed is then sintered in a vacuum.

この場合には、金属粉末(ステンレス粉末)と異色粉末
(タングステン粉末)とのうち、ステンレス粉末の方が
タングステン粉末よりも融点が低いので、ステンレス粉
末の融点に合わせて焼成する。これは、ステンレス粉末
の融点より高い温度で焼成すると、ステンレス粉末が溶
けてしまうからである。このような焼結方法は、まず、
 300℃/Hrで徐々に4.2時間程度加熱してステ
ンレス粉末の融点(1250℃)まで加熱した後、この
状態(1250℃程度の状yム)でさらに1時間程度加
熱する。このように成形品が焼結されると、その成形品
はバインダの含有率に応じて収縮し、その色相は銀色の
ステンレス粉末とタングステン粉末とにより2色が混じ
り合った状態となる。この2色の混じり合い方は、金属
粉末と異色粉末の混合比によって異なり、その色相はタ
ングステン粉末が黒色の点として現われる。このように
焼結された成形品は表面加重(表面イ11げ)して製品
となる。
In this case, between the metal powder (stainless steel powder) and the unique powder (tungsten powder), the stainless powder has a lower melting point than the tungsten powder, so the firing is performed to match the melting point of the stainless powder. This is because the stainless steel powder will melt if fired at a temperature higher than the melting point of the stainless steel powder. This sintering method first requires
After gradually heating at 300° C./Hr for about 4.2 hours to the melting point of stainless steel powder (1250° C.), it is further heated in this state (about 1250° C.) for about 1 hour. When the molded product is sintered in this manner, the molded product contracts in accordance with the content of the binder, and its hue becomes a mixture of two colors due to the silvery stainless steel powder and the tungsten powder. The way these two colors are mixed depends on the mixing ratio of the metal powder and the different color powder, and the hue of the tungsten powder appears as black dots. The molded article sintered in this manner is subjected to surface loading (surface roughening) to become a product.

したがって、1−述したような金属粉末製品およびその
製造方υ、によれば、金属粉末成形材ネ1として、銀色
のステンレス粉末、黒色のタングステン粉末、およびバ
インダを用い、これらを混練して射出成形し、()られ
た成形品を脱バインダ丁程で成形品中のバインダを除去
した後、ステンレス粉末の融点に合わせて焼結するよう
にしたので、銀色のステンレス粉末と黒色のタングステ
ン粉末とで2色が混合した色相の製品を得ることができ
る。そのため、ステンレス粉末等の金属粉末以外の色を
出すことができ、製品が単純色にならず、デザイン的に
優れた製品を(1)ることができる、このような製品は
1例えば腕時計ケース、時計バンド、ブローチ、ブレス
レット笠の装簿品に極めて良好に適用することができる
ほか、管楽器等の金属部品としても広く用いることがで
きる。
Therefore, according to 1-Metal powder product and its manufacturing method υ as described above, silver-colored stainless steel powder, black tungsten powder, and binder are used as the metal powder molding material 1, and these are kneaded and injection-molded. After the binder in the molded product was removed in the binder removal stage, the molded product was sintered to match the melting point of the stainless steel powder, so the silvery stainless steel powder and black tungsten powder were You can obtain a product with a hue that is a mixture of two colors. Therefore, it is possible to produce colors other than metal powder such as stainless steel powder, and the product does not have a simple color and can be made with an excellent design (1).Such products are 1.For example, watch cases, It can be applied very well to watch bands, brooches, bracelet hats, and other metal parts such as wind instruments.

なお、上述し、た実施例では、金属粉末としてステンレ
ス粉末を用いたが、これに限らず、金色をなす、H,+
、銅(Os)等の他の金属粉末を用いても良く。
In addition, although stainless steel powder was used as the metal powder in the above-mentioned embodiments, the metal powder is not limited to this.
, other metal powders such as copper (Os) may also be used.

またこの黄銅粉末に異色粉末としてステンレス粉末を用
いても良い、この場合にも、焼結時の温度は融点の低い
金属粉末(例えばシ4銅)に合わせる。また、異色粉末
としては、タングステン粉末に限らず、砂、貝殻、耐火
れんが、ガラス(融点の高い石英ガラス、シリカガラス
等)、セラミック、+2 J 、超合金等の比較的融点
が高く、しかも金属粉末と色の異なる粉末であれば、ど
のようなものを用いても良い。
Further, stainless steel powder may be used as a different color powder for this brass powder. Also in this case, the temperature during sintering is adjusted to a metal powder with a low melting point (for example, 4 copper). In addition, unique powders include not only tungsten powder but also sand, shells, refractory bricks, glass (quartz glass, silica glass, etc. with high melting points), ceramics, +2 J, superalloys, etc., which have relatively high melting points, and metals. Any powder may be used as long as it has a different color from the powder.

また、異色粉末として顔料の粉末、例え1fZrsiO
n [結晶形ジルコン] 、Go(AI、(:r)20
*[スヒネ、IL/] 、 (Zr、V)SiOaVO
?[ジルコン] 、 (Ti、Cr、5b)Or[ルチ
ル] 、 (Ti、Xi、5b)02[ルチル] 、 
CryOy  [ヘマタイト](Cu、No)(Or、
Mu)204CuO[スピネル]等を用いてもよい。
Pigment powder, such as 1fZrsiO, can also be used as a different color powder.
n [crystalline zircon], Go(AI, (:r)20
*[Shine, IL/], (Zr, V)SiOaVO
? [Zircon], (Ti, Cr, 5b)Or[rutile], (Ti, Xi, 5b)02[rutile],
CryOy [Hematite] (Cu, No) (Or,
Mu)204CuO [spinel] or the like may also be used.

[発明の効果] 以):詳細に説1511.たように、この発明によれば
、金属粉末と、この金属粉末の融点とほぼ同じかもしく
はそれ以1−の融点をイi L Il、つト記金属粉末
と色の異なる異色粉末と、M ii) ・7i性樹1n
iのバインダとで金属粉末成形材$1を構成し、この金
属粉末成形材ネ1を混練して混合体を作り、この混合体
で所定形状の成形品を伯り、この成形品を加熱して金属
粉末成形材料中のバインダを除去した後、この成形品を
金属粉末の融点とほぼ同じ温度で焼結することにより、
製品を作るようにしたので金属粉末以外の色を出すこと
ができ、デヂイン性に優れた製品を得ることができる。
[Effects of the invention] (hereinafter): Detailed explanation 1511. According to the present invention, a metal powder, a metal powder having a melting point approximately equal to or higher than the melting point of the metal powder, and a unique powder having a different color from the metal powder, M ii) ・7i sex tree 1n
Form a metal powder molding material $1 with the binder i, knead the metal powder molding material N1 to make a mixture, mold a predetermined shape of a molded product with this mixture, and heat this molded product. After removing the binder in the metal powder molding material, the molded product is sintered at approximately the same temperature as the melting point of the metal powder.
Since the product is made in this way, it is possible to produce a color other than that of metal powder, and it is possible to obtain a product with excellent diginability.

4、図面(7) tPi rr+−す説II第1図はこ
の発IJIに係る金属粉末製品の製造方法を示すr程図
である。
4. Drawing (7) tPi rr+- Theory II FIG. 1 is a process diagram showing the method for manufacturing metal powder products according to this development IJI.

Claims (3)

【特許請求の範囲】[Claims] (1)金属粉末と、この金属粉末の融点とほぼ同じかも
しくはそれ以上の融点を有し且つ上記金属粉末と色の異
なる異色粉末と、熱可塑性樹脂のバインダとからなるこ
とを特徴とする金属粉末成形材料。
(1) A metal characterized by comprising a metal powder, a unique powder having a melting point substantially the same as or higher than the melting point of the metal powder and having a different color from the metal powder, and a thermoplastic resin binder. Powder molding material.
(2)請求項第1項に記載された金属粉末成形材料の混
合体で成形され、上記バインダが除去されたうえ焼結し
てなることを特徴とする金属粉末製品。
(2) A metal powder product, characterized in that it is molded with a mixture of the metal powder molding material according to claim 1, the binder is removed, and then sintered.
(3)請求項第1項に記載された金属粉末成形材料を混
練して混合体を作る工程と、 この混合体で所定形状に成形品を作る工程 と、 この成形品を加熱して金属粉末成形材料中のバインダを
除去する工程と、 バインダが除去された成形品を金属粉末の融点とほぼ同
じ温度で焼結する工程と、 からなる金属粉末製品の製造方法。
(3) a step of kneading the metal powder molding material described in claim 1 to form a mixture; a step of forming a molded article in a predetermined shape from this mixture; and a step of heating the molded article to form a metal powder. A method for manufacturing a metal powder product, comprising the steps of: removing a binder from a molding material; and sintering the molded product from which the binder has been removed at approximately the same temperature as the melting point of the metal powder.
JP63284141A 1988-11-10 1988-11-10 Material for forming metal powder, metal powder product and manufacture thereof Pending JPH02129301A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63284141A JPH02129301A (en) 1988-11-10 1988-11-10 Material for forming metal powder, metal powder product and manufacture thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63284141A JPH02129301A (en) 1988-11-10 1988-11-10 Material for forming metal powder, metal powder product and manufacture thereof

Publications (1)

Publication Number Publication Date
JPH02129301A true JPH02129301A (en) 1990-05-17

Family

ID=17674699

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63284141A Pending JPH02129301A (en) 1988-11-10 1988-11-10 Material for forming metal powder, metal powder product and manufacture thereof

Country Status (1)

Country Link
JP (1) JPH02129301A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0700880A3 (en) * 1994-09-12 1996-10-23 Basf Ag Granule and process for preparing coloured ceramic articles
WO2009009764A1 (en) 2007-07-12 2009-01-15 Apple Inc. Methods for integrally trapping a glass insert in a metal bezel and produced electronic device
CN102328075A (en) * 2011-07-22 2012-01-25 浙江一火科技有限公司 Stainless steel rehabilitation medical instrument and manufacture method thereof
JP2019113383A (en) * 2017-12-22 2019-07-11 国立大学法人九州工業大学 Estimating method of material mixture ratio of metal complex
CN111515378A (en) * 2019-04-02 2020-08-11 深圳市泛海统联精密制造股份有限公司 Process for directly forming colorful metal by MIM (metal injection molding)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0700880A3 (en) * 1994-09-12 1996-10-23 Basf Ag Granule and process for preparing coloured ceramic articles
WO2009009764A1 (en) 2007-07-12 2009-01-15 Apple Inc. Methods for integrally trapping a glass insert in a metal bezel and produced electronic device
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