JPH05185714A - Marking method of powder sintered product - Google Patents
Marking method of powder sintered productInfo
- Publication number
- JPH05185714A JPH05185714A JP1941992A JP1941992A JPH05185714A JP H05185714 A JPH05185714 A JP H05185714A JP 1941992 A JP1941992 A JP 1941992A JP 1941992 A JP1941992 A JP 1941992A JP H05185714 A JPH05185714 A JP H05185714A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- marking
- sintered
- binder
- product
- 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
Landscapes
- Thermal Transfer Or Thermal Recording In General (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、射出成形粉末焼結法に
よって製造される製品にマーキングを施す方法の改善に
関するものである。FIELD OF THE INVENTION The present invention relates to an improved method of marking products made by injection molding powder sintering.
【０００２】[0002]
【従来の技術】三次元的な複雑な形状を有する金属又は
セラミック製の機械部品や電気部品を製造する方法の一
つに、射出成形粉末焼結法がある。この方法は金属粉末
又はセラミック粉末を有機質バインダーと混練し、該混
練物をバインダーの軟化温度以上に加熱して射出成形
し、該成形物を脱バインダー処理した後所定の温度で焼
結するものである。2. Description of the Related Art Injection molding powder sintering is one of the methods for producing mechanical or electrical parts made of metal or ceramic having a three-dimensionally complicated shape. In this method, metal powder or ceramic powder is kneaded with an organic binder, the kneaded product is heated to a temperature above the softening temperature of the binder and injection-molded, and the molded product is debindered and then sintered at a predetermined temperature. is there.
【０００３】バインダーとしてはワックス、ポリエチレ
ン等が用いられ、粉末との濡れ性を改善するため界面活
性剤を混合することもある。Wax, polyethylene or the like is used as the binder, and a surfactant may be mixed in order to improve the wettability with the powder.
【０００４】[0004]
【発明が解決しようとする課題】ところで、上記射出成
形粉末焼結製品には品種、ロゴ、ロットを示すためのマ
ークや、装飾のための模様を付す場合がある。ところが
一旦焼結体になったものにこのようなマークや装飾模様
を付ける能率的な方法はまだ見付かっていない。例えば
金属に対するマーキングに１００Ｗ級のＹＡＧレーザー
を用いた場合、印字速度は１秒間に３文字程度に過ぎ
ず、しかも材質毎に最適マーキング条件を変える必要が
あり、生産性に問題がある。The injection-molded powder-sintered product may be provided with a mark for indicating a product type, a logo, a lot, or a pattern for decoration. However, an efficient method for providing such a mark or a decorative pattern to the once sintered body has not yet been found. For example, when a 100 W class YAG laser is used for marking on metal, the printing speed is only about 3 characters per second, and it is necessary to change the optimum marking condition for each material, which causes a problem in productivity.
【０００５】この生産性の問題は射出成形に用いる金型
にマーキングあるいは装飾のためのエンボスを設ければ
解消するがそのような金型加工は金型製作費を増大さ
せ、不経済である。This problem of productivity can be solved by providing a die used for injection molding with embossing for marking or decoration, but such die processing increases the die manufacturing cost and is uneconomical.
【０００６】本発明は上記事情に鑑みて為されたもので
あり、粉末焼結製品へ能率的にかつ経済的にマーキング
を施す方法を提供するものである。The present invention has been made in view of the above circumstances, and provides a method for efficiently and economically marking a powder sintered product.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するため
本発明の方法は、射出成形体にそのままで、又は該射出
成形体を脱バインダーした後に、レーザーマーキングを
施す点に特徴があり、前者の場合はその後に脱バインダ
ーして焼結し、後者の場合はそのまま焼結に供するので
ある。In order to achieve the above object, the method of the present invention is characterized in that laser marking is performed on an injection molded body as it is or after the injection molded body is debindered. In the case of 1, the binder is then removed and sintered, and in the latter case, it is directly subjected to sintering.
【０００８】[0008]
【作用】射出成形体又はその脱バインダー体にレーザー
マーキングすることの利点は、これらは熱伝導が焼結体
に比べて小さく、小さい出力のレーザーでマーキングが
可能であり、マーキングのスピードを速めることができ
る上、粉末の材質によりマーキング条件をあまり変える
必要がなくなる点にある。このためマーキングが極めて
能率的かつ経済的に行えることになる。[Function] The advantage of laser marking on the injection molded body or the debindered body thereof is that they have smaller thermal conductivity than the sintered body and can be marked by a laser with a small output, which speeds up marking. In addition, the marking conditions do not have to be changed so much depending on the powder material. This makes marking extremely efficient and economical.
【０００９】レーザーとしてＣＯ2 レーザー、ＹＡＧレ
ーザーの何れも用いることができる。出力、ビーム径を
適宜調整することにより、彫り込み深さや線幅、あるい
はシャープさを変化させ得る。As the laser, either a CO 2 laser or a YAG laser can be used. The engraving depth, line width, or sharpness can be changed by appropriately adjusting the output and the beam diameter.
【００１０】凹みの深さは１ｍｍ程度、線幅は最小で
０．１ｍｍが可能であり、照射時間は一平方ｃｍ当り１
秒以下で充分である。The depth of the depression can be about 1 mm and the line width can be as small as 0.1 mm, and the irradiation time is 1 per 1 cm 2.
Seconds or less is sufficient.
【００１１】本発明法は又次のような利点をもたらす。
即ち、射出成形体にマークが施されるので、中間製品の
管理が容易になる。形状、寸法が類似する多品種の製品
を取扱う場合に大きな効果を奏する。The method of the present invention also brings the following advantages.
That is, since the injection molded body is marked, the intermediate product can be easily managed. This is very effective when handling a wide variety of products with similar shapes and dimensions.
【００１２】又、マーキング時の熱影響が焼結体にマー
キングする場合に比べて小さい上、その後の焼結によっ
ても熱歪みを開放するので、製品の残留応力はより小さ
くなる。Further, the thermal effect at the time of marking is smaller than that in the case of marking on the sintered body, and the thermal strain is released by the subsequent sintering, so that the residual stress of the product becomes smaller.
【００１３】[0013]
【実施例】実験Ｎｏ．１…Ｆｅ−２Ｎｉ−Ｃ粉末とパラ
フィンワックスとの混練物を射出成形して１０ｍｍ角、
長さ５５ｍｍの棒状物を得た。この棒状物の長方形の一
面にパルス走査型のＣＯ2 レーザーを用い、出力２０
Ｗ、ビーム径０．４ｍｍで、Ａ〜Ｋのアルファベット１
１文字を５ｍｍ角大でマーキングした。所要時間は１．
２秒であった。この棒状物を窒素雰囲気中で２０℃／時
で昇温し、３００℃まで加熱して脱バインダーし、次い
で真空焼結炉中で１２５０℃で焼結した。前記マークは
鮮明に描かれていた。Example Experiment No. 1. A kneaded product of Fe-2Ni-C powder and paraffin wax was injection-molded to form a 10 mm square,
A rod-shaped material having a length of 55 mm was obtained. A pulse scanning type CO 2 laser is used on one side of the rectangular shape of the rod-shaped object to output 20
W, beam diameter 0.4mm, AK alphabet 1
One character was marked with a 5 mm square. The required time is 1.
It was 2 seconds. This rod was heated at 20 ° C./hour in a nitrogen atmosphere, heated to 300 ° C. to remove the binder, and then sintered at 1250 ° C. in a vacuum sintering furnace. The mark was clearly drawn.
【００１４】実験Ｎｏ．２…ＳＵＳ３１６Ｌを高圧で水
アトマイズした平均粒径９μｍの粉末とパラフィンワッ
クスとの混練物を射出成形して実験Ｎｏ．１と同様の棒
状物を得た。この棒状物を実験Ｎｏ．１と同じ条件で脱
バインダーした後、パルス走査型ＹＡＧレーザーを用
い、出力５０Ｗ、ビーム径０．１ｍｍで実験Ｎｏ．１と
同じ文字列をマーキングした。所要時間は０．８秒であ
った。この棒状物を実験Ｎｏ．１と同じ条件で焼結した
所、マークは極めて鮮明に描かれていた。Experiment No. No. 2 ... Experiment No. 2 was prepared by injection-molding a kneaded material of powder having an average particle size of 9 μm obtained by water atomizing SUS316L under high pressure and paraffin wax. A rod-shaped material similar to that of 1 was obtained. This rod-shaped object was used as an experiment After debinding under the same conditions as in Example 1, a pulse scanning YAG laser was used, and the output was 50 W and the beam diameter was 0.1 mm. The same character string as 1 was marked. The time required was 0.8 seconds. This rod-shaped object was used as an experiment No. When sintered under the same conditions as in No. 1, the mark was drawn extremely clearly.
【００１５】[0015]
【発明の効果】本発明法により初めて粉末焼結製品への
能率的かつ経済的なマーキング方法が確立した。このマ
ーキング方法が装飾模様にも適用できることは言うまで
もない。According to the method of the present invention, an efficient and economical marking method for powder sintered products has been established for the first time. It goes without saying that this marking method can also be applied to decorative patterns.
Claims (2)
インダーとの混練物を射出成形し、該成形体にレーザー
マーキングを施した後脱バインダーし、焼結することを
特徴とする粉末焼結製品のマーキング方法。1. Marking of a powder sintered product, characterized in that a kneaded product of a metal powder or a ceramic powder and an organic binder is injection molded, the molded product is laser-marked, then the binder is removed, and the product is sintered. Method.
インダーとの混練物を射出成形し、脱バインダーした
後、該成形体にレーザーマーキングを施し、焼結するこ
とを特徴とする粉末焼結製品のマーキング方法。2. A marking of a powder-sintered product, which comprises subjecting a kneaded material of metal powder or ceramic powder and an organic binder to injection molding, debinding, and then subjecting the molded body to laser marking and sintering. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1941992A JPH05185714A (en) | 1992-01-09 | 1992-01-09 | Marking method of powder sintered product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1941992A JPH05185714A (en) | 1992-01-09 | 1992-01-09 | Marking method of powder sintered product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05185714A true JPH05185714A (en) | 1993-07-27 |
Family
ID=11998744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1941992A Pending JPH05185714A (en) | 1992-01-09 | 1992-01-09 | Marking method of powder sintered product |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05185714A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017162921A (en) * | 2016-03-08 | 2017-09-14 | セイコーインスツル株式会社 | Rare earth sintered magnet and manufacturing method of the same |
| WO2019017256A1 (en) * | 2017-07-18 | 2019-01-24 | 住友電工焼結合金株式会社 | Sintered product and laser marking method therefor |
-
1992
- 1992-01-09 JP JP1941992A patent/JPH05185714A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017162921A (en) * | 2016-03-08 | 2017-09-14 | セイコーインスツル株式会社 | Rare earth sintered magnet and manufacturing method of the same |
| WO2019017256A1 (en) * | 2017-07-18 | 2019-01-24 | 住友電工焼結合金株式会社 | Sintered product and laser marking method therefor |
| KR20200033886A (en) | 2017-07-18 | 2020-03-30 | 스미또모 덴꼬 쇼오께쯔 고오낑 가부시끼가이샤 | Sintered products and laser marking method |
| CN110958927A (en) * | 2017-07-18 | 2020-04-03 | 住友电工烧结合金株式会社 | Sintered article and laser marking method for sintered article |
| JPWO2019017256A1 (en) * | 2017-07-18 | 2020-09-10 | 住友電工焼結合金株式会社 | Sintered products and their laser marking methods |
| CN110958927B (en) * | 2017-07-18 | 2022-02-01 | 住友电工烧结合金株式会社 | Sintered article and laser marking method for sintered article |
| US11504809B2 (en) | 2017-07-18 | 2022-11-22 | Sumitomo Electric Sintered Alloy, Ltd. | Sintered product and laser marking method for sintered product |
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