JPH0829532B2 - Method of manufacturing parts by powder - Google Patents
Method of manufacturing parts by powderInfo
- Publication number
- JPH0829532B2 JPH0829532B2 JP76287A JP76287A JPH0829532B2 JP H0829532 B2 JPH0829532 B2 JP H0829532B2 JP 76287 A JP76287 A JP 76287A JP 76287 A JP76287 A JP 76287A JP H0829532 B2 JPH0829532 B2 JP H0829532B2
- Authority
- JP
- Japan
- Prior art keywords
- powder
- mold
- parts
- injection molding
- injection
- 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.)
- Expired - Lifetime
Links
- 239000000843 powder Substances 0.000 title claims description 13
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 238000001746 injection moulding Methods 0.000 claims description 11
- 238000000748 compression moulding Methods 0.000 claims description 7
- 239000000919 ceramic Substances 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000000463 material Substances 0.000 description 6
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 235000021355 Stearic acid Nutrition 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000008117 stearic acid Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
Landscapes
- Producing Shaped Articles From Materials (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
- Powder Metallurgy (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明はセラミックス，金属の微粉末を使用して精密
機器，輸送用機器，電気電子機器等の部品を製造する方
法を提供するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention provides a method for manufacturing parts such as precision equipment, transportation equipment, and electric / electronic equipment using fine powders of ceramics and metals. .
本発明はセラミックス，金属等の粉末により部品を製
造する際に第１ステップとして薄板状又はブロック状の
単純な形状に射出成形を行い、しかる後第２ステップと
して金型により圧縮成形し所望の形状とするものであ
る。According to the present invention, when a component is manufactured from powder of ceramics, metal, etc., the first step is injection molding into a thin plate-like or block-like simple shape, and then the second step is compression molding with a die to obtain a desired shape. It is what
従来粉末の射出成形により部品を製造する場合には精
密な金型を使用してセラミックス、もしくは金属の粉末
を主成分とした熱可塑性物質を射出成形し部品を製造し
ていた。このため金型の構造が複雑となるため金型のコ
ストが高くまた射出材料により型が摩耗し寸法精度が狂
うため、型寿命が短かくなる等の理由により結果的に部
品のコストがアップする欠点があった。Conventionally, when a part is manufactured by injection molding of powder, a precision mold is used to injection mold a thermoplastic material containing ceramic or metal powder as a main component to manufacture a part. For this reason, the structure of the mold becomes complicated and the cost of the mold is high, and because the mold is worn by the injection material and the dimensional accuracy is disturbed, the life of the mold is shortened and the cost of the parts is increased. There was a flaw.
粉末の射出成形で部品の最終成形をする際、良好な成
形品を得るためには型の構造が複雑となり、また型設計
上の制約条件が多いという欠点があった。またこのよう
にして、作製した型が射出材料により摩耗し、寸法が狂
うため耐久性が短いという欠点があった。When the final molding of parts is performed by powder injection molding, the mold structure is complicated in order to obtain a good molded product, and there are many constraints on the mold design. Further, there is a drawback that the mold thus manufactured is worn out by the injection material and its dimensions are changed, so that the durability is short.
本発明は部品の成形を射出成形及び圧縮成形の２段階
で行うことを特徴としている。射出成形による型は薄板
状またはブロック状の単純な成形物を射出成形するため
の、簡単に製造できまた寸法精度に冗長度の高い安価な
型を使用し、第２ステップの圧縮成形による型で所望の
形状とするようにしたものである。第２ステップの圧縮
成形型はスプルー，ランナー，ゲート等の機構がいらな
い上、射出成形のような高圧を使用しないで低圧で成形
できるため型が射出成形より小型にでき、また製作する
のが容易である。本発明において第１ステップで粉末の
射出成形により薄板状又はブロック状の成形体を製造す
る理由は完成部品の空隙を少なくし、又部品の寸法精度
を向上させるためである。The present invention is characterized in that the molding of the parts is performed in two stages of injection molding and compression molding. The injection-molding mold is a mold for injection molding of a thin plate-shaped or block-shaped molded product, which is easy to manufacture and has a high degree of redundancy in dimensional accuracy and an inexpensive mold. It has a desired shape. The second step compression mold does not require a mechanism such as sprue, runner and gate, and can be molded at low pressure without using high pressure such as injection molding, so the mold can be made smaller than injection molding and is easy to manufacture. Is. In the present invention, the reason why the thin plate-shaped or block-shaped molded body is manufactured by powder injection molding in the first step is to reduce voids in the finished part and to improve the dimensional accuracy of the part.
以下実施例に従って本発明を詳細に説明する。 The present invention will be described in detail below with reference to examples.
実施例１ 平均粒径８μのSUS316 L材の粉末85重量部に、ポリプ
ロピレン，パラフィンワックス，ステアリン酸よりなる
有機バインダー15重量部を添加しミキサーで140℃の温
度で30分間加熱混合した。この混合物を放冷固化した後
粉砕し、射出成形により厚さ3mm,たて30mm,横30mmの板
状の成形体を作成した。しかる後この成形体を予備加熱
した後、圧縮成形機に男持ちの腕時計ケース形状に形成
した金型を取りつけ圧縮成形を行った。この成形体を脱
脂処理、焼結を行った後穴あけ、研磨等を行い腕時計ケ
ースを作成した。Example 1 15 parts by weight of an organic binder composed of polypropylene, paraffin wax and stearic acid was added to 85 parts by weight of a powder of SUS316L material having an average particle diameter of 8 μm, and the mixture was heated and mixed with a mixer at a temperature of 140 ° C. for 30 minutes. The mixture was allowed to cool and solidify, then pulverized, and injection-molded to form a plate-shaped molded body having a thickness of 3 mm, a vertical length of 30 mm, and a horizontal length of 30 mm. Then, after preheating this molded body, a mold formed in the shape of a wristwatch for a man was attached to a compression molding machine and compression molding was performed. This molded body was degreased, sintered, and then punched, polished, etc. to prepare a wristwatch case.
実施例２ 平均粒径0.5μの酸化アルミニウム粉末86重量部にポ
リスチレン，パラフィンワックス，ステアリン酸よりな
る有機バインダー14重量部を添加しミキサーで160℃の
温度で20分間加熱混合した。この混合物を放冷固化した
後粉末し、射出成形により厚さ2.5mm,たて30mm,横25mm
で中央に20×10mmの穴のあいたブロック状に成形した。
しかる後この成形体を予備加熱した後、圧縮成形機に女
性用腕時計ケース形状に形成した金型を取りつけ圧縮成
形を行った。この成形体を脱脂処理、焼結を行った後研
磨を行い腕時計ケースを作成した。Example 2 14 parts by weight of an organic binder composed of polystyrene, paraffin wax and stearic acid was added to 86 parts by weight of an aluminum oxide powder having an average particle size of 0.5 μ, and the mixture was heated and mixed with a mixer at a temperature of 160 ° C. for 20 minutes. This mixture is allowed to cool and solidify, then powdered and injection molded to a thickness of 2.5 mm, vertical length of 30 mm, and horizontal width of 25 mm.
Was molded into a block with a hole of 20 x 10 mm in the center.
Thereafter, this molded body was preheated, and then a mold formed in the shape of a wristwatch for women was attached to the compression molding machine to perform compression molding. The molded body was degreased, sintered and then polished to prepare a wristwatch case.
本発明の実施例においては時計のケースの場合につい
て述べたが、他の機械部品，電子部品，装飾部品等にお
いても同様に製造できる事はいうまでもない事である。Although the case of the timepiece has been described in the embodiments of the present invention, it goes without saying that other mechanical parts, electronic parts, decorative parts and the like can be manufactured in the same manner.
以上述べたように本発明によれば、従来の粉末射出成
形に比べて型の製造を容易にし、トータルプロセスとし
てコトスダウンをはかることができ、また材料としてセ
ラミックスをはじめ金属，超硬材料及びそれらの複合材
料にも応用することができ、非常に有効である。As described above, according to the present invention, as compared with the conventional powder injection molding, the mold can be easily manufactured, and the cost can be reduced as a total process. Further, as the material, ceramics, metals, superhard materials and those materials can be used. It can be applied to composite materials and is very effective.
Claims (1)
械，部品，電子部品等を製造する際に、まず粉末射出成
形法により薄板状またはブロック状の成形品を製造し、
しかる後圧縮成形により所望の形状に成形する事を特徴
とする粉末による部品の製造方法。1. When manufacturing machinery, parts, electronic parts, etc. using ceramics and metal powders, first, a thin plate-shaped or block-shaped molded product is manufactured by a powder injection molding method,
Then, a method for producing a component made of powder, which is characterized by compacting into a desired shape by compression molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP76287A JPH0829532B2 (en) | 1987-01-06 | 1987-01-06 | Method of manufacturing parts by powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP76287A JPH0829532B2 (en) | 1987-01-06 | 1987-01-06 | Method of manufacturing parts by powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63168302A JPS63168302A (en) | 1988-07-12 |
| JPH0829532B2 true JPH0829532B2 (en) | 1996-03-27 |
Family
ID=11482706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP76287A Expired - Lifetime JPH0829532B2 (en) | 1987-01-06 | 1987-01-06 | Method of manufacturing parts by powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0829532B2 (en) |
-
1987
- 1987-01-06 JP JP76287A patent/JPH0829532B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63168302A (en) | 1988-07-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| EXPY | Cancellation because of completion of term |