JPH04191301A - Iron-based powder mixed material for powder meatallurgy - Google Patents
Iron-based powder mixed material for powder meatallurgyInfo
- Publication number
- JPH04191301A JPH04191301A JP2318083A JP31808390A JPH04191301A JP H04191301 A JPH04191301 A JP H04191301A JP 2318083 A JP2318083 A JP 2318083A JP 31808390 A JP31808390 A JP 31808390A JP H04191301 A JPH04191301 A JP H04191301A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- iron
- based powder
- zinc
- mixed
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 68
- 239000000843 powder Substances 0.000 title claims abstract description 55
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 28
- 239000000463 material Substances 0.000 title abstract 3
- 238000004663 powder metallurgy Methods 0.000 claims abstract description 11
- UQLDLKMNUJERMK-UHFFFAOYSA-L di(octadecanoyloxy)lead Chemical compound [Pb+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O UQLDLKMNUJERMK-UHFFFAOYSA-L 0.000 claims abstract description 10
- 239000011812 mixed powder Substances 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims description 15
- LPEBYPDZMWMCLZ-CVBJKYQLSA-L zinc;(z)-octadec-9-enoate Chemical compound [Zn+2].CCCCCCCC\C=C/CCCCCCCC([O-])=O.CCCCCCCC\C=C/CCCCCCCC([O-])=O LPEBYPDZMWMCLZ-CVBJKYQLSA-L 0.000 claims description 14
- 238000005275 alloying Methods 0.000 claims description 7
- 229910045601 alloy Inorganic materials 0.000 abstract description 5
- 239000000956 alloy Substances 0.000 abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052725 zinc Inorganic materials 0.000 abstract description 3
- 239000011701 zinc Substances 0.000 abstract description 3
- PHYFQTYBJUILEZ-IUPFWZBJSA-N triolein Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OCC(OC(=O)CCCCCCC\C=C/CCCCCCCC)COC(=O)CCCCCCC\C=C/CCCCCCCC PHYFQTYBJUILEZ-IUPFWZBJSA-N 0.000 abstract 2
- 229910000851 Alloy steel Inorganic materials 0.000 abstract 1
- 238000005245 sintering Methods 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 31
- 239000000314 lubricant Substances 0.000 description 22
- 238000002844 melting Methods 0.000 description 13
- 230000008018 melting Effects 0.000 description 13
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 10
- 239000002184 metal Substances 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 9
- 238000000465 moulding Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000005461 lubrication Methods 0.000 description 5
- 239000003094 microcapsule Substances 0.000 description 3
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 2
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 2
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 2
- 239000005642 Oleic acid Substances 0.000 description 2
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 2
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- JXSRRBVHLUJJFC-UHFFFAOYSA-N 7-amino-2-methylsulfanyl-[1,2,4]triazolo[1,5-a]pyrimidine-6-carbonitrile Chemical compound N1=CC(C#N)=C(N)N2N=C(SC)N=C21 JXSRRBVHLUJJFC-UHFFFAOYSA-N 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- SVOAENZIOKPANY-CVBJKYQLSA-L copper;(z)-octadec-9-enoate Chemical compound [Cu+2].CCCCCCCC\C=C/CCCCCCCC([O-])=O.CCCCCCCC\C=C/CCCCCCCC([O-])=O SVOAENZIOKPANY-CVBJKYQLSA-L 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000011874 heated mixture Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- LVBIMKHYBUACBU-CVBJKYQLSA-L nickel(2+);(z)-octadec-9-enoate Chemical compound [Ni+2].CCCCCCCC\C=C/CCCCCCCC([O-])=O.CCCCCCCC\C=C/CCCCCCCC([O-])=O LVBIMKHYBUACBU-CVBJKYQLSA-L 0.000 description 1
- JMWUYEFBFUCSAK-UHFFFAOYSA-L nickel(2+);octadecanoate Chemical compound [Ni+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O JMWUYEFBFUCSAK-UHFFFAOYSA-L 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 229940049964 oleate Drugs 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 229940098697 zinc laurate Drugs 0.000 description 1
- 229940105125 zinc myristate Drugs 0.000 description 1
- 229940012185 zinc palmitate Drugs 0.000 description 1
- NVKSAUAQUPYOPO-UHFFFAOYSA-L zinc;decanoate Chemical compound [Zn+2].CCCCCCCCCC([O-])=O.CCCCCCCCCC([O-])=O NVKSAUAQUPYOPO-UHFFFAOYSA-L 0.000 description 1
- IJQXGKBNDNQWAT-UHFFFAOYSA-L zinc;docosanoate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCCCCCC([O-])=O IJQXGKBNDNQWAT-UHFFFAOYSA-L 0.000 description 1
- GPYYEEJOMCKTPR-UHFFFAOYSA-L zinc;dodecanoate Chemical compound [Zn+2].CCCCCCCCCCCC([O-])=O.CCCCCCCCCCCC([O-])=O GPYYEEJOMCKTPR-UHFFFAOYSA-L 0.000 description 1
- GJAPSKMAVXDBIU-UHFFFAOYSA-L zinc;hexadecanoate Chemical compound [Zn+2].CCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCC([O-])=O GJAPSKMAVXDBIU-UHFFFAOYSA-L 0.000 description 1
- CHJMFFKHPHCQIJ-UHFFFAOYSA-L zinc;octanoate Chemical compound [Zn+2].CCCCCCCC([O-])=O.CCCCCCCC([O-])=O CHJMFFKHPHCQIJ-UHFFFAOYSA-L 0.000 description 1
- GBFLQPIIIRJQLU-UHFFFAOYSA-L zinc;tetradecanoate Chemical compound [Zn+2].CCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCC([O-])=O GBFLQPIIIRJQLU-UHFFFAOYSA-L 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野１
本発明は粉末冶金用鉄系粉末混合物に関するものである
。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application 1] The present invention relates to an iron-based powder mixture for powder metallurgy.
〔従来の技術］
粉末冶金用鉄系粉末混合物の流動性は圧縮性と成形性と
同様に、高密度、高強度の焼結体の製造に不可決の特性
である。すなわち、原料の粉末混合物が流動することが
複雑な形状の部品を成形する時に重要で、圧縮性と成形
性を損なわずに流動性を向上させる潤滑剤およびその添
加方法は、従来、種々検討されてきた。[Prior Art] The fluidity of iron-based powder mixtures for powder metallurgy, like compressibility and formability, is an essential characteristic for producing high-density, high-strength sintered bodies. In other words, the fluidity of the raw powder mixture is important when molding parts with complex shapes, and various studies have been conducted on lubricants and methods of adding them that improve fluidity without impairing compressibility and moldability. It's here.
例えば、特公昭６３−１６４４１号公報にはステアリン
酸亜鉛を加熱溶融して添加する方法が、特開昭５２−３
３８１０号公報には有機液体潤滑剤を含有するマイクロ
カプセルを固体潤滑剤で被覆したものを添加する方法が
示されている。For example, Japanese Patent Publication No. 63-16441 describes a method of heating and melting zinc stearate and adding it.
No. 3810 discloses a method of adding microcapsules containing an organic liquid lubricant coated with a solid lubricant.
しかし、ステアリン酸亜鉛を用いる方法では、流動性の
改善は認められるものの、圧縮性はステアリン酸亜鉛を
常温で混合添加した場合より僅かしか向上していない。However, in the method using zinc stearate, although the fluidity is improved, the compressibility is only slightly improved compared to the case where zinc stearate is mixed and added at room temperature.
また、マイクロカプセルを固体潤滑剤で被覆して用いる
方法では、圧縮性の向上はわずかで、流動性も３０秒１
５０ｇ以上であり、２０秒７５０ｇ以下の実用的な流動
性が得られていない。In addition, with the method of using microcapsules coated with a solid lubricant, the compressibility improved only slightly and the fluidity decreased by 30 seconds.
50 g or more, and practical fluidity of 750 g or less for 20 seconds has not been obtained.
本発明は、上述のように従来技術では困難であった、流
動性と圧縮性及び成形性の向上を同時に可能しようとす
るものである。The present invention aims to simultaneously improve fluidity, compressibility, and moldability, which has been difficult with the prior art as described above.
［課題を解決するための手段１
本発明は上記課題を解決するために、鉄系粉末、又は鉄
系粉末と合金用粉末との混合粉末に、ステアリン酸鉛又
はオレイン酸亜鉛を添加したことを特徴どする粉末冶金
用鉄系粉末混合物を提供するもので、ステアリン酸鉛又
はオレイン酸亜鉛の添加量が、鉄系粉末、又は鉄系粉末
と合金用粉末との混合粉末に対して０．２〜２．５重量
％であることが好ましい。[Means for Solving the Problems 1] In order to solve the above problems, the present invention provides that lead stearate or zinc oleate is added to an iron-based powder or a mixed powder of an iron-based powder and an alloying powder. The present invention provides an iron-based powder mixture for powder metallurgy, in which the amount of lead stearate or zinc oleate added is 0.2 to the iron-based powder or the mixed powder of iron-based powder and alloying powder. It is preferably 2.5% by weight.
潤滑剤で金属粉末粒子表面をコーティングする理由は、
金属粉末と混合させた時の潤滑剤の偏析を防ぎ、加圧成
形時に各金属粉末粒子間の接触点、及び金属粉末粒子と
金型内面との接触点で均一に効果的に潤滑作用を起こさ
せ、流動性、圧縮性、成形性の向上をはかるためである
。The reason for coating the surface of metal powder particles with lubricant is
It prevents segregation of the lubricant when mixed with metal powder, and causes a uniform and effective lubrication effect at the contact points between each metal powder particle and the contact point between the metal powder particle and the inner surface of the mold during pressure molding. This is to improve fluidity, compressibility, and moldability.
本発明においては、潤滑剤はステアリン酸鉛もしくはオ
レイン酸亜鉛を用いる。これ等の潤滑剤は、鉄系粉末、
又は鉄系粉末と合金用粉末との混合粉末に予め混合され
て用いられ、型内での加圧成形時の摩擦熱により溶融し
金属粉末表面をコーティングして、金属粉末間の潤滑及
び金型おもにダイ内面との間で潤滑作用をする。In the present invention, lead stearate or zinc oleate is used as the lubricant. These lubricants include iron-based powder,
Alternatively, it is used by pre-mixing a mixed powder of iron-based powder and alloying powder, and is melted by the frictional heat during pressure molding in the mold and coats the metal powder surface, providing lubrication between the metal powders and molding. Mainly acts as a lubricant with the inner surface of the die.
ステアリン酸鉛もしくはオレイン酸亜鉛を用いる理由は
、これ等の潤滑剤の融点が７５℃以上。The reason why lead stearate or zinc oleate is used is that the melting point of these lubricants is 75°C or higher.
９０℃以下で、融点が９０℃より上では摩擦熱による潤
滑剤の溶融潤滑作用が弱くなり、金属粉末間の潤滑及び
金型おもにダイ内面との間の潤滑作用が低下するからで
ある。また融点が７５℃未満では金属粉末と予め混合さ
れた混合物の流動性が得られなくなるからである。This is because if the temperature is below 90°C and the melting point is above 90°C, the melting lubrication effect of the lubricant due to frictional heat will be weakened, and the lubrication effect between the metal powders and the lubrication effect between the mold and the inner surface of the die will be reduced. Further, if the melting point is lower than 75°C, the fluidity of the mixture pre-mixed with the metal powder cannot be obtained.
また、融点以外にこれらは構成元素の大半がＣ１０、Ｈ
で構成されるため、混合物の成形体を加熱焼結する時に
潤滑剤が容易に分解し成形体から離脱するからである。In addition to the melting point, most of the constituent elements are C10, H
This is because when the molded body of the mixture is heated and sintered, the lubricant easily decomposes and separates from the molded body.
潤滑剤の添加量が過少な場合は流動性が劣り、過多な場
合は圧縮性や成形性が低下することは従来から知られて
いる通りで、本発明におけるステアリン酸鉛又はオレイ
ン酸亜鉛の添加量は前記金属粉末に対し０．２〜２．５
重量％が好ましく、従来のステアリン酸亜鉛などに比べ
圧縮性や成形性が優れるため、より少ない潤滑剤添加量
で成形が可能になり経済的である利点がある。It has been known that if the amount of lubricant added is too small, the fluidity will be poor, and if it is too much, the compressibility and formability will be reduced. The amount is 0.2 to 2.5 based on the metal powder.
% by weight is preferable, and since it has superior compressibility and moldability compared to conventional zinc stearate, etc., it has the advantage of being economical because it can be molded with a smaller amount of lubricant added.
なお、本発明における鉄系粉末としては、粉末冶金用水
アトマイズ鉄粉、合金銅粉等が、合金用粉末としては、
黒鉛粉、電解銅粉が使用される。In addition, the iron-based powder in the present invention includes water atomized iron powder for powder metallurgy, alloy copper powder, etc., and the alloy powder includes:
Graphite powder and electrolytic copper powder are used.
実施例１．２ 比較例１〜９
粉末冶金用水アトマイズ鉄粉に、実施例１としてオレイ
ン酸亜鉛を、実施例２としてステアリン酸鉛をそれぞれ
０．５重量％加えて粉末混合物とし、これを１２０℃で
１０分間加加熱台した。Example 1.2 Comparative Examples 1 to 9 0.5% by weight of zinc oleate as Example 1 and 0.5% by weight of lead stearate as Example 2 were added to water atomized iron powder for powder metallurgy to form a powder mixture. The mixture was heated on a heating stand at ℃ for 10 minutes.
また、比較例１としてオレイン酸、比較例２としてオレ
イン酸鉛、比較例３としてオレイン酸銅、比較例４とし
てオレイン酸ニッケル、比較例５としてステアリン酸、
比較例６としてステアリン酸亜鉛、比較例７としてステ
アリン酸銅、比較例８としてステアリン酸ニッケル、比
較例９としてワックスのエチレン・ビスステアリン酸ア
マイドを、実施例１と同一の方法で鉄粉と混合した。In addition, oleic acid as Comparative Example 1, lead oleate as Comparative Example 2, copper oleate as Comparative Example 3, nickel oleate as Comparative Example 4, stearic acid as Comparative Example 5,
Zinc stearate as Comparative Example 6, copper stearate as Comparative Example 7, nickel stearate as Comparative Example 8, and ethylene bisstearamide wax as Comparative Example 9 were mixed with iron powder in the same manner as in Example 1. did.
第１表に実施例１．２．比較例１〜９に用いた潤滑剤の
融点と、その鉄粉との加熱混合物の流動層、７ ｔ ／
ｃ ｒｒ１″の成形圧力での圧粉密度及び圧粉抗折力
を示す。Table 1 shows Examples 1.2. The melting point of the lubricant used in Comparative Examples 1 to 9 and the fluidized bed of the heated mixture with iron powder, 7 t/
The green powder density and green powder transverse rupture strength at a molding pressure of cr rr1'' are shown.
実施例１．２は融点が７５℃以上、９０℃以下のため、
比較例１６に示す従来の潤滑剤より優れた流動層、圧粉
密度及び圧粉体抗折力が得られた。特に、オレイン酸亜
鉛は圧粉密度の向上が著しく、かっ８０ｋｇｆ／ｃｒｎ
″以上の圧粉体抗折力の向上が得られた。Example 1.2 has a melting point of 75°C or higher and 90°C or lower, so
A fluidized bed, green powder density, and green compact transverse rupture strength superior to those of the conventional lubricant shown in Comparative Example 16 were obtained. In particular, zinc oleate has a remarkable improvement in green density, reaching 80 kgf/crn.
The transverse rupture strength of the green compact was improved by more than 20%.
しかし、比較例１．２．３．４はいずれも融点が７５℃
未満のため流動性が得られず、比較例１６に示す従来の
ステアリン酸亜鉛より劣るものであった。また、比較例
５．６．７．８．９は融点が９０℃を越えるため、流動
層、圧縮性、圧粉体抗折力の同時向上が得られなかった
。However, in Comparative Examples 1, 2, 3, and 4, the melting point was 75°C.
Since the amount of zinc stearate was less than that, fluidity could not be obtained, and the result was inferior to the conventional zinc stearate shown in Comparative Example 16. Furthermore, since the melting point of Comparative Example 5.6.7.8.9 exceeded 90° C., it was not possible to simultaneously improve the fluidized bed, compressibility, and transverse rupture strength of the green compact.
比較例１０〜１５
実施例１と同一の鉄粉に実施例１と同様の方法で、ただ
し、潤滑剤に含有炭素量の異なる脂肪酸の亜鉛石鹸を、
比較例１０としてカプリル酸亜鉛、比較例１１としてカ
プリン酸亜鉛、比較例１２としてラウリン酸亜鉛、比較
例１３としてミリスチン酸亜鉛、比較例１４としてパル
ミチン酸亜鉛、比較例１５としてベヘン酸亜鉛を用いた
。Comparative Examples 10 to 15 The same method as in Example 1 was applied to the same iron powder as in Example 1, except that fatty acid zinc soap with a different carbon content was used as a lubricant.
Zinc caprylate was used as Comparative Example 10, zinc caprate was used as Comparative Example 11, zinc laurate was used as Comparative Example 12, zinc myristate was used as Comparative Example 13, zinc palmitate was used as Comparative Example 14, and zinc behenate was used as Comparative Example 15. .
第２表に比較例１０〜１５に用いた潤滑剤の融点と、そ
の鉄粉との混合物の流動層、７ ｔ ／ ｃ ｒｒＩ″
の成形圧力での圧粉密度及び圧粉体抗折力を示す。いず
れも、融点が１３０℃前後で９０℃以上あるため、圧縮
性の向上がなかった。Table 2 shows the melting points of the lubricants used in Comparative Examples 10 to 15 and the fluidized bed of the mixture with iron powder, 7 t/c rrI''
The green density and transverse rupture strength of the green compact at the molding pressure are shown. In either case, the melting point was around 130°C and higher than 90°C, so there was no improvement in compressibility.
実施例３ 比較例１６〜１７
実施例１と同様に鉄粉に潤滑剤を添加し、常温で１０分
間混合した。ただし、潤滑剤は実施例３としてオレイン
酸亜鉛、比較例１６として従来のステアリン亜鉛、比較
例１７としてオレイン酸のマイクロカプセルを２０重量
％のステアリン酸亜鉛で被覆したものを添加した。Example 3 Comparative Examples 16-17 A lubricant was added to iron powder in the same manner as in Example 1, and the mixture was mixed at room temperature for 10 minutes. However, the lubricants used were zinc oleate in Example 3, conventional zinc stearate in Comparative Example 16, and oleic acid microcapsules coated with 20% by weight of zinc stearate in Comparative Example 17.
第３表に、実施例３、比較例１６〜１７に用いた潤滑剤
の鉄粉との混合物の流動層、７ ｔ ／ ｃ ｔＴ１″
の成形圧力での圧粉密度及び圧粉体抗折力を示す。実施
例３はオレイン酸亜鉛を用いているため、常温混合にて
も高い圧縮性、圧粉体抗折力の向上が得られ、かつ流動
性も向上した。比較例１７は流動性がきわめて劣った。Table 3 shows the fluidized bed of the mixture of lubricant and iron powder used in Example 3 and Comparative Examples 16 to 17, 7 t/ct T1''
The green density and transverse rupture strength of the green compact at the molding pressure are shown. In Example 3, since zinc oleate was used, high compressibility and improvement in transverse rupture strength of the green compact were obtained even when mixed at room temperature, and fluidity was also improved. Comparative Example 17 had extremely poor fluidity.
実施例４〜８
実施例１と同様の方法で、ただし、オレイン酸亜鉛の添
加量を実施例４は０，２重量％、実施例５は０．３重量
％、実施例６は１．０重量％、実施例７は１．５重量％
、実施例８は２．０重量％とした。Examples 4 to 8 Same method as Example 1, except that the amount of zinc oleate added was 0.2% by weight in Example 4, 0.3% by weight in Example 5, and 1.0% in Example 6. % by weight, Example 7 is 1.5% by weight
In Example 8, the content was 2.0% by weight.
第４表に実施例４〜８に用いた潤滑剤の融点と、その混
合物の流動層、７ ｔ ／ ｃ ｒｎ”の成形圧力での
圧粉密度及び圧粉体抵抗力を示した。いずれも流動層、
圧粉密度及び圧粉体抗折力が向上した。Table 4 shows the melting points of the lubricants used in Examples 4 to 8, and the compact density and compact resistance of the mixtures in a fluidized bed and at a molding pressure of 7 t/crn''. fluidized bed,
The compact density and transverse rupture strength of the compact were improved.
なお、オレイン酸亜鉛に替えてステアリン酸鉛を用いて
もほぼ同様な結果が得られた。Note that almost similar results were obtained even when lead stearate was used in place of zinc oleate.
実施例９〜１１ 比較例１８〜２０
鉄系粉末に実施例１と同様の方法でオレイン酸亜鉛を潤
滑剤として加えた。ただし、実施例９は鉄粉に合金用粉
末として黒鉛粉末を０．８重量％添加して混合粉末とし
、実施例１０は鉄粉に合金用粉末として電解銅粉を１．
０重量％加えて混合粉末とし、実施例１１は鉄粉に替え
て１，０重量％Ｎｉ、０．３重量％Ｃｕ、０．２重量％
ＭＯを合金化した鉄系粉末を用いた。Examples 9-11 Comparative Examples 18-20 Zinc oleate was added as a lubricant to iron-based powder in the same manner as in Example 1. However, in Example 9, 0.8% by weight of graphite powder was added as an alloying powder to the iron powder to form a mixed powder, and in Example 10, 1.8% by weight of electrolytic copper powder was added to the iron powder as an alloying powder.
0% by weight was added to make a mixed powder, and in Example 11, 1.0% by weight Ni, 0.3% by weight Cu, and 0.2% by weight were added in place of iron powder.
Iron-based powder alloyed with MO was used.
また、実施例９〜１１に用いたオレイン酸亜鉛に賛えて
ステアリン酸亜鉛を用いて比較例１８〜２０とした。各
実施例は比較例に比し、いずれも第５表に示すような高
い圧縮性と圧粉体抗折力が流動性と合わせて得られた。Moreover, in addition to the zinc oleate used in Examples 9 to 11, zinc stearate was used in Comparative Examples 18 to 20. As compared to the comparative example, each of the examples achieved high compressibility and transverse rupture strength of the green compact as shown in Table 5, together with fluidity.
［発明の効果］
本発明は流動性に優れた高圧縮性、高成形性の粉末冶金
用鉄系粉末混合物を提供することができ、高密度、高強
度の焼結部品の製造を作業性よく達成することが可能と
なる。[Effects of the Invention] The present invention can provide an iron-based powder mixture for powder metallurgy that has excellent fluidity, high compressibility, and high formability, and facilitates the production of high-density, high-strength sintered parts. It becomes possible to achieve this.
Claims (1)
に、ステアリン酸鉛又はオレイン酸亜鉛を添加したこと
を特徴とする粉末冶金用鉄系粉末混合物。 ２ ステアリン酸鉛又はオレイン酸亜鉛の添加量が、鉄
系粉末、又は鉄系粉末と合金用粉末との混合粉末に対し
て０．２〜２．５重量％である請求項１記載の粉末冶金
用鉄系粉末混合物。[Scope of Claims] 1. An iron-based powder mixture for powder metallurgy, characterized in that lead stearate or zinc oleate is added to an iron-based powder or a mixed powder of an iron-based powder and an alloying powder. 2. Powder metallurgy according to claim 1, wherein the amount of lead stearate or zinc oleate added is 0.2 to 2.5% by weight based on the iron-based powder or the mixed powder of iron-based powder and alloying powder. Iron-based powder mixture for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2318083A JPH04191301A (en) | 1990-11-26 | 1990-11-26 | Iron-based powder mixed material for powder meatallurgy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2318083A JPH04191301A (en) | 1990-11-26 | 1990-11-26 | Iron-based powder mixed material for powder meatallurgy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04191301A true JPH04191301A (en) | 1992-07-09 |
Family
ID=18095292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2318083A Pending JPH04191301A (en) | 1990-11-26 | 1990-11-26 | Iron-based powder mixed material for powder meatallurgy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04191301A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006025187A1 (en) * | 2004-08-30 | 2006-03-09 | Nippon Mining & Metals Co., Ltd. | Metal powder for powder metallurgy mainly containing iron and iron-base sintered material |
| JPWO2006025188A1 (en) * | 2004-08-30 | 2008-07-31 | 日鉱金属株式会社 | Iron-based sintered metal powder and metal powder for powder metallurgy |
| CN102649156A (en) * | 2012-03-09 | 2012-08-29 | 成都邦普合金材料有限公司 | Method for adding hard alloy mixture paraffin wax shaping agent |
| CN103602849A (en) * | 2013-10-10 | 2014-02-26 | 铜陵新创流体科技有限公司 | Copper-based alloy sliding-bearing material and preparation method thereof |
| CN104550920A (en) * | 2014-12-25 | 2015-04-29 | 铜陵市经纬流体科技有限公司 | Iron-based powder metallurgy material used for high-hardness valve and preparation method of iron-based powder metallurgy material |
| CN107598157A (en) * | 2017-09-20 | 2018-01-19 | 建德市易通金属粉材有限公司 | Auto parts machinery bonds mixed powder and preparation method thereof with segregation-free iron copper carbon |
-
1990
- 1990-11-26 JP JP2318083A patent/JPH04191301A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006025187A1 (en) * | 2004-08-30 | 2006-03-09 | Nippon Mining & Metals Co., Ltd. | Metal powder for powder metallurgy mainly containing iron and iron-base sintered material |
| JPWO2006025187A1 (en) * | 2004-08-30 | 2008-07-31 | 日鉱金属株式会社 | Iron-based sintered metal powder and metal powder for powder metallurgy |
| JPWO2006025188A1 (en) * | 2004-08-30 | 2008-07-31 | 日鉱金属株式会社 | Iron-based sintered metal powder and metal powder for powder metallurgy |
| US7666245B2 (en) | 2004-08-30 | 2010-02-23 | Nippon Mining & Metals Co., Ltd. | Metallic powder for powder metallurgy whose main component is iron and iron-based sintered body |
| US7691172B2 (en) | 2004-08-30 | 2010-04-06 | Nippon Mining & Metals Co., Ltd. | Metallic powder for powder metallurgy whose main component is iron and iron-based sintered body |
| JP4745240B2 (en) * | 2004-08-30 | 2011-08-10 | Ｊｘ日鉱日石金属株式会社 | Metal powder for powder metallurgy mainly composed of iron and iron-based sintered body |
| JP4745239B2 (en) * | 2004-08-30 | 2011-08-10 | Ｊｘ日鉱日石金属株式会社 | Metal powder for powder metallurgy mainly composed of iron and iron-based sintered body |
| CN102649156A (en) * | 2012-03-09 | 2012-08-29 | 成都邦普合金材料有限公司 | Method for adding hard alloy mixture paraffin wax shaping agent |
| CN103602849A (en) * | 2013-10-10 | 2014-02-26 | 铜陵新创流体科技有限公司 | Copper-based alloy sliding-bearing material and preparation method thereof |
| CN104550920A (en) * | 2014-12-25 | 2015-04-29 | 铜陵市经纬流体科技有限公司 | Iron-based powder metallurgy material used for high-hardness valve and preparation method of iron-based powder metallurgy material |
| CN107598157A (en) * | 2017-09-20 | 2018-01-19 | 建德市易通金属粉材有限公司 | Auto parts machinery bonds mixed powder and preparation method thereof with segregation-free iron copper carbon |
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