JPS6221841B2 - - Google Patents
Info
- Publication number
- JPS6221841B2 JPS6221841B2 JP57077022A JP7702282A JPS6221841B2 JP S6221841 B2 JPS6221841 B2 JP S6221841B2 JP 57077022 A JP57077022 A JP 57077022A JP 7702282 A JP7702282 A JP 7702282A JP S6221841 B2 JPS6221841 B2 JP S6221841B2
- Authority
- JP
- Japan
- Prior art keywords
- soft iron
- sintered part
- steam
- less
- iron sintered
- 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
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 21
- 229910052742 iron Inorganic materials 0.000 claims description 10
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 2
- 239000000463 material Substances 0.000 description 5
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
Description
【発明の詳細な説明】
磁気特性を要する軟鉄系材料は、柔かさと同時
にねばさを有するため、切削時にむしれを発生し
難削で加工精度を上げることが困難である。軟鉄
系焼結材についても同様で、特に薄肉材に対する
精度のよい加工が困難である。DETAILED DESCRIPTION OF THE INVENTION Soft iron-based materials that require magnetic properties are both soft and sticky, which causes peeling during cutting, making them difficult to cut and difficult to improve machining accuracy. The same applies to soft iron-based sintered materials, and it is particularly difficult to process thin-walled materials with high precision.
本発明は軟鉄系焼結材について、水蒸気中で加
熱処理して空孔内にFe2O3等の酸化鉄の皮膜を形
成すると、被削性を悪化させず剛性を増し硬くな
つて切削の際むしれにくくなるため、また外力に
対し歪みにくくなり薄肉部を有する部品等も精度
よく加工できることを見出したものである。 The present invention proposes that when a soft iron-based sintered material is heat-treated in steam to form a film of iron oxide such as Fe 2 O 3 in the pores, it increases its rigidity without deteriorating its machinability and becomes hard and difficult to cut. It has been discovered that parts with thin walls can be processed with high accuracy because they are less likely to peel off at the edges and are less likely to be distorted by external forces.
即ち本発明は、P1％以下、C0.3％以下、Cu2％
以下の密度6.4〜7.5ｇ／cm3の軟鉄系焼結部品に水
蒸気中で加熱処理を行なつた後、切削加工を施す
ものである。 That is, the present invention has P1% or less, C0.3% or less, Cu2%
The following soft iron sintered parts having a density of 6.4 to 7.5 g/cm 3 are heat treated in steam and then cut.
次に実施例について説明する。 Next, an example will be described.
外径50mm、内径47mm、幅23mmの密度6.5ｇ／cm3
の焼結部品（組成：純鉄）を水蒸気中で550℃に
30分加熱処理した後、内径48mmに旋削加工仕上げ
した。寸法精度は0.04mm以下であつた。 Outer diameter 50mm, inner diameter 47mm, width 23mm, density 6.5g/ cm3
sintered parts (composition: pure iron) in steam at 550℃
After heat treatment for 30 minutes, it was finished by turning to an inner diameter of 48 mm. The dimensional accuracy was 0.04 mm or less.
これに対し水蒸気加熱処理を行なわずに旋削仕
上げ加工を行なつたものは0.1mm程度以下に精度
を上げることはできなかつた。 On the other hand, when finishing turning was performed without steam heat treatment, it was not possible to improve the accuracy to below about 0.1 mm.
本発明法によれば、VTR用マグネツトケー
ス、ステツプモーター用部品等を焼結材を用いて
精度のよいものを安価に提供できる。 According to the method of the present invention, magnetic cases for VTRs, parts for step motors, and the like can be manufactured using sintered materials with high precision at low cost.
Claims (1)
空孔内に酸化鉄の皮膜を生成せしめた後、切削加
工することを特徴とする軟鉄系焼結部品の製造
法。 ２ 軟鉄系焼結部品が薄肉部を有することを特徴
とする特許請求の範囲１項記載の軟鉄系焼結部品
の製造法。[Claims] 1. A method for producing a soft iron sintered part, which comprises heating the soft iron sintered part in steam to form an iron oxide film in the pores, and then cutting the soft iron sintered part. . 2. The method for manufacturing a soft iron sintered part according to claim 1, wherein the soft iron sintered part has a thin wall portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7702282A JPS58193303A (en) | 1982-05-07 | 1982-05-07 | Preparation of soft ferrous sintered parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7702282A JPS58193303A (en) | 1982-05-07 | 1982-05-07 | Preparation of soft ferrous sintered parts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58193303A JPS58193303A (en) | 1983-11-11 |
| JPS6221841B2 true JPS6221841B2 (en) | 1987-05-14 |
Family
ID=13622123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7702282A Granted JPS58193303A (en) | 1982-05-07 | 1982-05-07 | Preparation of soft ferrous sintered parts |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58193303A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7260304B2 (en) | 2019-01-11 | 2023-04-18 | トヨタ自動車株式会社 | Method for manufacturing soft magnetic member |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50116305A (en) * | 1974-02-26 | 1975-09-11 | ||
| JPS5216681A (en) * | 1975-07-29 | 1977-02-08 | Matsushita Electric Works Ltd | Trolley wires with elongated insulators |
| JPS5651504A (en) * | 1979-09-29 | 1981-05-09 | Toshiba Corp | Production of sintered hydraulic parts |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53155507U (en) * | 1978-03-28 | 1978-12-06 |
-
1982
- 1982-05-07 JP JP7702282A patent/JPS58193303A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50116305A (en) * | 1974-02-26 | 1975-09-11 | ||
| JPS5216681A (en) * | 1975-07-29 | 1977-02-08 | Matsushita Electric Works Ltd | Trolley wires with elongated insulators |
| JPS5651504A (en) * | 1979-09-29 | 1981-05-09 | Toshiba Corp | Production of sintered hydraulic parts |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58193303A (en) | 1983-11-11 |
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