JPS6372803A - Production of iron-base sintered parts - Google Patents
Production of iron-base sintered partsInfo
- Publication number
- JPS6372803A JPS6372803A JP21616486A JP21616486A JPS6372803A JP S6372803 A JPS6372803 A JP S6372803A JP 21616486 A JP21616486 A JP 21616486A JP 21616486 A JP21616486 A JP 21616486A JP S6372803 A JPS6372803 A JP S6372803A
- Authority
- JP
- Japan
- Prior art keywords
- green compact
- stage
- oxide film
- iron
- steam
- 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 description 17
- 238000000465 moulding Methods 0.000 claims description 3
- 238000005245 sintering Methods 0.000 abstract description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 10
- 239000002245 particle Substances 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 abstract description 3
- 239000000314 lubricant Substances 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract 1
- 230000008023 solidification Effects 0.000 abstract 1
- 238000007711 solidification Methods 0.000 abstract 1
- 239000002344 surface layer Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 12
- 238000010438 heat treatment Methods 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000000696 magnetic material Substances 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
Abstract
Description
【発明の詳細な説明】
〔概要〕
鉄系焼結部品の製造方法であって、必要に応じデワック
ス処理した圧粉体を、焼結すること無く水蒸気黒化処理
により結合して部品を製造し、製造工程の短縮化、コス
トの低下を可能とする。[Detailed Description of the Invention] [Summary] A method for manufacturing iron-based sintered parts, in which the parts are manufactured by bonding green compacts, which have been dewaxed as necessary, by steam blackening treatment without sintering. , making it possible to shorten the manufacturing process and lower costs.
本発明は、鉄系焼結部品、例えば軟磁性材料部品の製造
方法に関するものである。The present invention relates to a method for manufacturing iron-based sintered parts, such as soft magnetic material parts.
種々の装置に使用されている磁性材料の部品は、一般に
鉄粉を押し固めて製造される焼結部品である。この焼結
部品には焼結炉で加熱して原子結合するものと、樹脂等
を媒体として結合する方法が採用されている。Magnetic material parts used in various devices are generally sintered parts manufactured by compacting iron powder. For these sintered parts, two methods are used: atomic bonding by heating in a sintering furnace, and bonding using resin or the like as a medium.
そこで、従来上記焼結による焼結部品の製造方法を示す
と、第２図のようになっている。即ち、混合工程Ｉで鉄
粉ｌに潤滑剤２を添加して混合し、成形工程■でそれを
金型に入れて固めることで圧粉体３を成形する。そして
、焼結工程■で先ずそれを予熱してデワックス（：ｆ４
滑剤排出）処理し、次いでＨ２ガス或いはＨ２，Ｎ２の
混合ガスの還元雰囲気中で高温加熱して焼結することで
、原子結合による焼結部品４を製造する。第３図に断面
図を示す。更に、その部品４の後処理として水蒸気黒化
工程■で水蒸気により表面に酸化鉄の被膜を作り、耐食
性等を付与するようになっている。Therefore, a conventional method for manufacturing sintered parts by the above-mentioned sintering is shown in FIG. 2. That is, in the mixing step I, the lubricant 2 is added to the iron powder 1 and mixed, and in the forming step 2, it is put into a mold and solidified to form the green compact 3. Then, in the sintering process ■, it is first preheated and dewaxed (: f4
The sintered part 4 is manufactured by atomic bonding by heating and sintering at a high temperature in a reducing atmosphere of H2 gas or a mixed gas of H2 and N2. A cross-sectional view is shown in FIG. Further, as a post-treatment of the part 4, a steam blackening step (3) is performed to form a film of iron oxide on the surface using steam, thereby imparting corrosion resistance and the like.
ところで、上記従来方法によると、焼結工程■で加熱焼
結することで、強度的に優れた部品になるが、加熱温度
が高く、還元ガスを要する焼結炉が必要であり、部品コ
ストも高くなる。ここで、磁性材料の部品の用途にはあ
まり強度が要求されないものもあり、かかる用途として
製造が容易で安価な部品を提供することが望まれる。By the way, according to the above conventional method, parts with excellent strength can be obtained by heating and sintering in the sintering process (2), but the heating temperature is high, a sintering furnace that requires reducing gas is required, and the parts cost is also high. It gets expensive. Here, there are some uses for parts made of magnetic materials that do not require much strength, and it is desired to provide parts that are easy to manufacture and inexpensive for such uses.
本発明は、このような点に鑑みて創作されたもので、製
造工程を短縮してコストの安い焼結部品を製造すること
が可能な鉄系焼結部品の製造方法を提供することを目的
としている。The present invention was created in view of these points, and an object of the present invention is to provide a method for manufacturing iron-based sintered parts that can shorten the manufacturing process and manufacture sintered parts at low cost. It is said that
上記目的を達成するため、本発明は実施例に対応した第
１図に示すように、
部品製造工程における水蒸気黒化処理が、酸化膜により
粒子を所定の強度で結合し得る点に着目している。In order to achieve the above object, the present invention focuses on the fact that steam blackening treatment in the parts manufacturing process can bond particles with a predetermined strength through an oxide film, as shown in FIG. 1 corresponding to an embodiment. There is.
そこで、成形工程Ｈの後に水蒸気黒化工程■を設け、こ
こで圧粉体３を必要に応じデワックスした後に水蒸気黒
化処理し、酸化膜５により粒子相互を結合すると共に耐
食性を付与し、部品４′を製造するようになっている。Therefore, a steam blackening step (2) is provided after the molding step H, in which the green compact 3 is dewaxed as necessary and then steam blackened, the particles are bonded together by the oxide film 5, and corrosion resistance is imparted to the parts. 4' is being manufactured.
上記製造方法により、成る程度の強度、耐久性を有する
焼結部品が製造されることになる。By the above manufacturing method, a sintered part having a certain level of strength and durability can be manufactured.
こうして本発明では、実際の焼結工程が不要になって製
造が短縮化し、部品のコストも安くすることが可能とな
る。In this way, the present invention eliminates the need for an actual sintering process, thereby shortening the manufacturing time and making it possible to reduce the cost of the parts.
以下、本発明の方法の実施例を図面に基づいて説明する
。Hereinafter, embodiments of the method of the present invention will be described based on the drawings.
第１図（ａ）において、混合工程Ｉでは鉄粉１と潤滑剤
２を混合し、成形工程■で圧粉体３を成形する。この成
形工程Ｈの後に水蒸気黒化工程■があり、この工程■は
（ｂ）に示すように予熱部ａ、黒化処理部す及び冷却部
Ｃをコンベアラインに順次配置して成る。In FIG. 1(a), iron powder 1 and lubricant 2 are mixed in a mixing step I, and a green compact 3 is formed in a forming step ①. After this forming step H, there is a steam blackening step (2), which consists of a preheating section a, a blackening section and a cooling section C arranged in sequence on a conveyor line, as shown in (b).
そこで、予熱部ａで圧粉体３を予熱してデワックス処理
し、処理部すでは水蒸気を供給しながら低温処理して圧
粉体３に酸化膜５を作る。そして、冷却部Ｃで冷却して
部品４′を製造するのである。Therefore, the green compact 3 is preheated and dewaxed in the preheating section a, and the oxide film 5 is formed on the green compact 3 by low-temperature treatment while supplying water vapor in the processing section. Then, it is cooled in the cooling section C to manufacture the part 4'.
こうして、部品４′は圧粉体３の全表面を酸化膜５で覆
ったものになる。第３図に断面写真を示す。この膜５に
より表面粒子相互が結合固化して、全体として所定の強
度を有する物体になる。In this way, the part 4' has the entire surface of the powder compact 3 covered with the oxide film 5. Figure 3 shows a cross-sectional photograph. The surface particles are bonded and solidified by this film 5 to form an object having a predetermined strength as a whole.
そして、この処理により耐食性等も付与される。This treatment also imparts corrosion resistance and the like.
以上のべてきたように、本発明によれば、水蒸気黒化処
理で圧＋５’Ｊ体の結合固化も行い、焼結工程が不要に
なるので、製造が大巾に短縮化する。As described above, according to the present invention, the pressure +5'J body is also bonded and solidified by steam blackening treatment, and the sintering process is not necessary, so that the manufacturing time is greatly shortened.
また、強度的にあまり要求されない用途に対し、コスト
の安い部品を提供することができる。Furthermore, it is possible to provide low-cost parts for applications that do not require much strength.
第１図（ａ）は本発明の製造方法の各工程を示す図、（
ｂ）・は水蒸気黒化工程を示す図、第２図は従来の製造
工程を示す図である。
また、第３図は、本発明並びに従来製造工程における製
品断面写真である。
第１図において、
■は成形工程、
■は水蒸気黒化工程、
３は圧粉体、
４′は焼結部品、
５は酸化膜である。FIG. 1(a) is a diagram showing each step of the manufacturing method of the present invention, (
b) is a diagram showing a steam blackening process, and FIG. 2 is a diagram showing a conventional manufacturing process. Moreover, FIG. 3 is a cross-sectional photograph of a product in the present invention and a conventional manufacturing process. In FIG. 1, (2) is a molding process, (2) is a steam blackening process, (3) is a green compact, (4') is a sintered part, and (5) is an oxide film.
Claims (1)
III）を設け、 該水蒸気黒化工程（III）で圧粉体（３）を酸化膜（５
）により結合固化して、焼結部品（４′）を製造する鉄
系焼結部品の製造方法。[Claims] After the molding step (II) of the green compact (3), a steam blackening step (
III), and in the steam blackening step (III), the green compact (3) is coated with an oxide film (5
) to produce a sintered part (4').
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21616486A JPS6372803A (en) | 1986-09-12 | 1986-09-12 | Production of iron-base sintered parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21616486A JPS6372803A (en) | 1986-09-12 | 1986-09-12 | Production of iron-base sintered parts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6372803A true JPS6372803A (en) | 1988-04-02 |
Family
ID=16684293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21616486A Pending JPS6372803A (en) | 1986-09-12 | 1986-09-12 | Production of iron-base sintered parts |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6372803A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001510286A (en) * | 1997-07-18 | 2001-07-31 | ホガナス アクチボラゲット | Soft magnetic synthetic material and method for producing the same |
| DE102014212603A1 (en) | 2013-07-02 | 2015-01-08 | Honda Motor Co., Ltd. | Vehicle lighting unit |
| WO2015098407A1 (en) | 2013-12-26 | 2015-07-02 | Ntn株式会社 | Machine component using powder compact and method for producing same |
| CN105828988A (en) * | 2013-12-26 | 2016-08-03 | Ntn株式会社 | Machine component using powder compact and method for producing same |
| JP2016141815A (en) * | 2015-01-29 | 2016-08-08 | Ntn株式会社 | Sliding member and manufacturing method therefor |
| WO2016147930A1 (en) * | 2015-03-19 | 2016-09-22 | Ntn株式会社 | Composite sliding member and production process therefor |
| EP3104029A4 (en) * | 2014-02-06 | 2017-11-22 | NTN Corporation | Plain bearing |
| KR20180055257A (en) * | 2016-11-16 | 2018-05-25 | 재단법인 포항산업과학연구원 | Iron-based powder and method for manufacturing the same |
| US11344948B2 (en) | 2016-03-03 | 2022-05-31 | Ntn Corporation | Method for producing machine component |
-
1986
- 1986-09-12 JP JP21616486A patent/JPS6372803A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001510286A (en) * | 1997-07-18 | 2001-07-31 | ホガナス アクチボラゲット | Soft magnetic synthetic material and method for producing the same |
| JP4689038B2 (en) * | 1997-07-18 | 2011-05-25 | ホガナス アクチボラゲット | Soft magnetic synthetic material and manufacturing method thereof |
| DE102014212603A1 (en) | 2013-07-02 | 2015-01-08 | Honda Motor Co., Ltd. | Vehicle lighting unit |
| WO2015098407A1 (en) | 2013-12-26 | 2015-07-02 | Ntn株式会社 | Machine component using powder compact and method for producing same |
| CN105828988A (en) * | 2013-12-26 | 2016-08-03 | Ntn株式会社 | Machine component using powder compact and method for producing same |
| EP3088106A4 (en) * | 2013-12-26 | 2017-08-09 | NTN Corporation | Machine component using powder compact and method for producing same |
| EP3104029A4 (en) * | 2014-02-06 | 2017-11-22 | NTN Corporation | Plain bearing |
| JP2016141815A (en) * | 2015-01-29 | 2016-08-08 | Ntn株式会社 | Sliding member and manufacturing method therefor |
| WO2016147930A1 (en) * | 2015-03-19 | 2016-09-22 | Ntn株式会社 | Composite sliding member and production process therefor |
| US11344948B2 (en) | 2016-03-03 | 2022-05-31 | Ntn Corporation | Method for producing machine component |
| KR20180055257A (en) * | 2016-11-16 | 2018-05-25 | 재단법인 포항산업과학연구원 | Iron-based powder and method for manufacturing the same |
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