JP2003328060A - Sintered alloy and manufacturing method therefor - Google Patents
Sintered alloy and manufacturing method thereforInfo
- Publication number
- JP2003328060A JP2003328060A JP2002130943A JP2002130943A JP2003328060A JP 2003328060 A JP2003328060 A JP 2003328060A JP 2002130943 A JP2002130943 A JP 2002130943A JP 2002130943 A JP2002130943 A JP 2002130943A JP 2003328060 A JP2003328060 A JP 2003328060A
- Authority
- JP
- Japan
- Prior art keywords
- sintered alloy
- carbon
- copper
- raw material
- material powder
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、焼結合金とその製
造方法に関する。TECHNICAL FIELD The present invention relates to a sintered alloy and a method for producing the same.
【０００２】[0002]
【発明が解決しようとする課題】この種の焼結合金とし
て、回転軸を支承する軸受があり、この軸受の製法とし
て、金属を主原料とする原料粉末を圧縮して圧粉体を形
成した後、この圧粉体を焼結してなる焼結軸受が広く用
いられている。As a sintered alloy of this type, there is a bearing that supports a rotating shaft. As a method of manufacturing this bearing, a raw material powder containing a metal as a main raw material is compressed to form a green compact. Later, a sintered bearing formed by sintering the green compact is widely used.
【０００３】その焼結軸受では、鉄系や銅系の原料粉末
を用いて成形され、塩酸，硫酸,りん酸等の非酸化性酸
に対する耐食性の面からは銅系の原料粉末を用いること
が好ましい。しかし、銅系の焼結合金であっても、濃硫
酸,硫酸等の酸化性酸，硫黄やその化合物に晒された
り、蟻酸，酢酸，リンゴ酸，クエン酸，オレイン酸，ス
テアリン酸等の有機酸が混ざった雰囲気中に晒されたり
すると、腐食により寿命が低下する問題がある。The sintered bearing is formed by using an iron-based or copper-based raw material powder, and a copper-based raw material powder is preferably used from the viewpoint of corrosion resistance to non-oxidizing acids such as hydrochloric acid, sulfuric acid and phosphoric acid. preferable. However, even copper-based sintered alloys are exposed to oxidizing acids such as concentrated sulfuric acid and sulfuric acid, sulfur and their compounds, and organic acids such as formic acid, acetic acid, malic acid, citric acid, oleic acid and stearic acid. When exposed to an atmosphere mixed with acid, there is a problem that the life is shortened due to corrosion.
【０００４】例えば、エンジンなどの排ガス系統に設け
られる部品は、排ガス雰囲気中で使用され、その排ガス
には硫黄酸化物や窒素酸化物などが含まれ酸性が強く、
かつ高温状態となる。一例として、その排ガス雰囲気で
は、ＰＨ1.5〜2.5、350〜500℃といった条件となるた
め、銅系の材料を用いても腐食を防止することができな
かった。For example, parts provided in an exhaust gas system such as an engine are used in an exhaust gas atmosphere, and the exhaust gas contains sulfur oxides, nitrogen oxides, etc. and is strongly acidic.
And the temperature becomes high. As an example, in the exhaust gas atmosphere, conditions such as PH 1.5 to 2.5 and 350 to 500 ° C. are used, and therefore corrosion cannot be prevented even if a copper-based material is used.
【０００５】本発明は、このような問題点を解決しよう
とするもので、酸性が強い高温雰囲気においても、耐食
性に優れた焼結合金とその製造方法を提供することを目
的とする。The present invention is intended to solve such problems, and an object of the present invention is to provide a sintered alloy having excellent corrosion resistance even in a high-temperature atmosphere with strong acidity and a method for producing the same.
【０００６】[0006]
【課題を解決するための手段】請求項１の焼結合金は、
前記目的を達成するために、銅系の原料粉末を成形する
と共に焼結してなる焼結合金において、表面の５０％以
上を炭素で覆ったものである。A sintered alloy according to claim 1 is
To achieve the above object, a sintered alloy obtained by molding and sintering a copper-based raw material powder has 50% or more of its surface covered with carbon.
【０００７】表面の５０％以上を炭素で覆うことによ
り、酸性の高温雰囲気中の使用においても、高い耐食性
を備えた焼結合金を得ることができる。また、例えば、
酸性の強い硫黄酸化物などに晒されても、銅と硫黄の化
合物が形成され、耐食性が確保され、また、この銅を含
む化合物などにより摺動性を確保することができる。し
たがって、排ガス雰囲気中で使用される排ガス部品とし
て耐久性を備えることが得られる。By covering 50% or more of the surface with carbon, it is possible to obtain a sintered alloy having high corrosion resistance even when used in an acidic high temperature atmosphere. Also, for example,
Even when exposed to highly acidic sulfur oxides, a compound of copper and sulfur is formed, corrosion resistance is ensured, and slidability can be ensured by the compound containing copper. Therefore, it is possible to obtain durability as an exhaust gas component used in an exhaust gas atmosphere.
【０００８】また、請求項２の発明は、請求項１の焼結
合金において、前記原料粉末が炭素を４〜１０重量％含
むものである。According to a second aspect of the present invention, in the sintered alloy according to the first aspect, the raw material powder contains 4 to 10% by weight of carbon.
【０００９】原料粉末が炭素を多く含むことにより、表
面を炭素が覆う割合を大きくすることができる。When the raw material powder contains a large amount of carbon, it is possible to increase the rate at which the surface is covered with carbon.
【００１０】また、請求項３の発明は、請求項１又は２
の焼結合金において、前記焼結合金が摺動部材である。The invention of claim 3 is the same as claim 1 or 2.
In the above sintered alloy, the sintered alloy is a sliding member.
【００１１】酸性の高温雰囲気中の使用においても、高
い耐食性を備えた摺動部品が得られる。また、例えば硫
黄酸化物などに晒されても、銅と硫黄の化合物が形成さ
れ、この銅を含む化合物などにより摺動性を確保するこ
とができる。Even when used in an acidic high temperature atmosphere, a sliding component having high corrosion resistance can be obtained. Further, even when exposed to, for example, sulfur oxide, a compound of copper and sulfur is formed, and slidability can be secured by the compound containing copper and the like.
【００１２】請求項４の焼結合金の製造方法は、前記目
的を達成するために、炭素を含む銅系の原料粉末を成形
すると共に焼結して焼結合金を製造する焼結合金の製造
方法において、前記焼結合金をサイジングすることによ
り表面の炭素を押し潰して該表面の５０％以上を炭素で
覆う方法である。In order to achieve the above object, the method for producing a sintered alloy according to claim 4 is a method for producing a sintered alloy, in which a copper-based raw material powder containing carbon is molded and sintered to produce a sintered alloy. In the method, the surface carbon is crushed by sizing the sintered alloy to cover 50% or more of the surface with the carbon.
【００１３】この方法を用いることにより、酸性の高温
雰囲気中の使用においても、高い耐食性を備えた焼結合
金を得ることができる。By using this method, it is possible to obtain a sintered alloy having high corrosion resistance even when used in an acidic high temperature atmosphere.
【００１４】[0014]
【発明の実施形態】以下、本発明の実施形態を添付図面
を参照して説明する。図１〜図３は本発明の一実施形態
を示し、焼結合金の原料には、Ｃｕ−Ｎｉ−Ｚｎ−Ｃ系
やＣｕ−Ｓｎ−Ｃ系等のものを用いることができる。
尚、以下、焼結合金として軸受１を例に説明する。図２
に示すように、軸受１は、略円筒形の焼結合金からな
り、その中央には回転軸が回転摺動する円筒状の摺動面
２が形成され、さらに、その軸受１の露出した表面３の
５０％以上を炭素により覆っている。Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 3 show an embodiment of the present invention, and as a raw material of the sintered alloy, Cu-Ni-Zn-C-based or Cu-Sn-C-based materials can be used.
The bearing 1 will be described below as an example of the sintered alloy. Figure 2
As shown in FIG. 1, the bearing 1 is made of a substantially cylindrical sintered alloy, and in the center thereof, a cylindrical sliding surface 2 on which the rotating shaft slides is formed. Further, the exposed surface of the bearing 1 Over 50% of 3 is covered with carbon.
【００１５】前記軸受１には、一例として、重量％で、
Ｚｎ：１５〜２１％、Ｎｉ：１５〜２１％、Ｐ ：０．
２〜１％、Ｃ ：４〜１０％、を含有し、残りがＣｕと
不可避不純物からなる組成、並びに５〜２５％の気孔率
を有する黒鉛分散型Ｃｕ基焼結合金を用いることがで
き、また、それ以外の組成の黒鉛分散型Ｃｕ基焼結合金
を用いることもでき、特に、本発明の特徴的な構成とし
て、原料粉末に炭素の粉末を４〜１０重量％含む。The bearing 1 is, for example, in weight%,
Zn: 15-21%, Ni: 15-21%, P: 0.
It is possible to use a graphite-dispersed Cu-based sintered alloy containing 2 to 1%, C: 4 to 10%, and the balance of Cu and inevitable impurities, and a porosity of 5 to 25%. Further, a graphite-dispersed Cu-based sintered alloy having a composition other than that can be used, and in particular, as a characteristic constitution of the present invention, the raw material powder contains 4 to 10% by weight of carbon powder.
【００１６】その製造方法につき、図１を参照して説明
すると、例えば焼結合金に用いる原料粉末として、いず
れも水アトマイズ法により形成され、炭素を含む銅系の
粉末を混合（Ｓ１：ステップ１）し、混合した原料粉末
を例えば１５０〜３００ＭＰａの範囲内の所定の圧力で
プレスにより所定形状の圧粉体に成形（Ｓ２）し、この
圧粉体をアンモニア分解ガス雰囲気中で、例えば７５０
〜９００℃の範囲内の所定の温度に４０分間保持の条件
で焼結（Ｓ３）して焼結合金を得る。The manufacturing method will be described with reference to FIG. 1. For example, as a raw material powder used for a sintered alloy, a copper-based powder containing carbon, which is formed by a water atomizing method, is mixed (S1: step 1). ), The mixed raw material powder is molded into a green compact having a predetermined shape by pressing at a predetermined pressure within a range of 150 to 300 MPa (S2), and the green compact is heated in an ammonia decomposition gas atmosphere, for example, at 750.
Sintered alloy is obtained by sintering (S3) under the condition of holding for 40 minutes at a predetermined temperature within the range of 900 ° C.
【００１７】本発明では、耐食性向上を図るため、焼結
（Ｓ３）処理後、得られた焼結合金にサイジング（Ｓ
４）処理を行い、このサイジング（Ｓ４）により焼結合
金を所定寸法に仕上げる。同時にサイジング（Ｓ４）に
より、焼結合金の表面３の炭素が押し潰されて広がり、
焼結合金である軸受１の表面３が炭素で覆われ、上記組
成を用いることにより、軸受１の表面３の５０％以上を
炭素により覆った構造を得ることができる。尚、以下、
表面を覆う炭素の割合を炭素被覆率という。そして、炭
素被覆率は、表面をカラー写真（倍率×１００）し、決
められた２ｍｍ方眼のトレース用紙のフレームを写真上
に重ね合わせ、炭素の表面比率を計算して算出される。In the present invention, in order to improve the corrosion resistance, after the sintering (S3) treatment, the obtained sintered alloy is sized (S).
4) A treatment is performed, and the sizing (S4) finishes the sintered alloy to a predetermined size. At the same time, the sizing (S4) causes the carbon on the surface 3 of the sintered alloy to be crushed and spread,
The surface 3 of the bearing 1 which is a sintered alloy is covered with carbon, and by using the above composition, a structure in which 50% or more of the surface 3 of the bearing 1 is covered with carbon can be obtained. In addition,
The ratio of carbon covering the surface is called carbon coverage. The carbon coverage is calculated by color-photographing the surface (magnification × 100), overlaying a frame of a trace paper of 2 mm grid, which has been determined, on the photograph, and calculating the carbon surface ratio.
【００１８】図３はサイジングに用いる矯正用金型装置
11の一例を示し、この矯正用金型装置11は、上下方向を
軸方向（プレス上下軸方向）としており、ダイ12、コア
ロッド13、下パンチ14および上パンチ15を備えている。
ダイ12はほぼ円筒形状で、このダイ12内にほぼ円柱形状
のコアロッド13が同軸的に位置している。下パンチ14
は、ほぼ円筒形状で、ダイ12およびコアロッド13間に下
方から上下動自在に嵌合している。上パンチ15は、ほぼ
円筒形状で、ダイ12およびコアロッド13間に上方から上
下動自在にかつ挿脱自在に嵌合するものである。そし
て、図３に示すように、ダイ12内に前記軸受５を充填
し、この軸受５の貫通孔である摺動面52にコアロッド13
を挿入配置した状態で、上下方向から上，下パンチ13，
14により軸受１を加圧して所定の寸法に矯正すると共に
表面３の炭素を押し潰す。尚、表面３とは、外部に露出
する面であり、図２の筒状の軸受１においては、上下端
面、外周面、摺動面２全体である。FIG. 3 shows a straightening die device used for sizing.
An example of the straightening die apparatus 11 is shown. The straightening die apparatus 11 has a vertical direction as an axial direction (press vertical axis direction), and includes a die 12, a core rod 13, a lower punch 14, and an upper punch 15.
The die 12 has a substantially cylindrical shape, and a substantially cylindrical core rod 13 is coaxially positioned inside the die 12. Lower punch 14
Has a substantially cylindrical shape, and is fitted between the die 12 and the core rod 13 so as to be vertically movable from below. The upper punch 15 has a substantially cylindrical shape, and is fitted between the die 12 and the core rod 13 so as to be vertically movable and removable from above. Then, as shown in FIG. 3, the bearing 5 is filled in the die 12, and the core rod 13 is formed on the sliding surface 52 which is a through hole of the bearing 5.
With the insert inserted, the upper and lower punches 13
The bearing 1 is pressed by 14 to correct it to a predetermined size and to crush the carbon on the surface 3. The surface 3 is a surface exposed to the outside, and in the cylindrical bearing 1 of FIG. 2, the upper and lower end surfaces, the outer peripheral surface, and the sliding surface 2 as a whole.
【００１９】実験例
重量％で、Ｚｎ：１８％、Ｎｉ：１８％、Ｐ ：０．６
％、Ｃ ：３．５〜１１％、を含有し、残りをＣｕの組
成し、２０％の気孔率を有するＣｕ基焼結合金を製作
し、焼結（Ｓ３）後及びサイジング（Ｓ４）後における
表面３の炭素被覆率％を複数点で計測した結果、次の表
１のようになった。Experimental Example In weight%, Zn: 18%, Ni: 18%, P: 0.6
%, C: 3.5 to 11%, the rest of which is Cu, and a Cu-based sintered alloy having a porosity of 20% is manufactured, and after sintering (S3) and sizing (S4). As a result of measuring the carbon coverage% of the surface 3 at a plurality of points in Table 3, the results are shown in Table 1 below.
【００２０】[0020]
【表１】 [Table 1]
【００２１】サイジング（Ｓ４）後において，上記表１
のように原料粉末の炭素量が重量％が３．５％の例で
は、炭素被覆率が５０％未満となり、原料粉末の炭素量
が重量％が１１％の例では、偏析が多く、炭素被覆率
が５０％以下となる場合があり、これに対して原料粉末
の炭素量が重量％が４％，６％，８％，１０％の例
では、いずれも炭素被覆率が５０％以上となり、こ
れにより原料粉末に炭素を重量％で４〜１０％とするこ
とにより、炭素被覆率が５０％以上とすることができ
る。After sizing (S4), the above table 1
When the carbon content of the raw material powder is 3.5% by weight, the carbon coverage is less than 50%, and when the carbon content of the raw material powder is 11% by weight, segregation is large and the carbon coating is large. In some cases, the carbon content of the raw material powder is 4%, 6%, 8%, and 10%, whereas the carbon coverage is 50% or more. As a result, the carbon coating rate can be 50% or more by adjusting the carbon content of the raw material powder to be 4 to 10% by weight.
【００２２】図４は、重量％で、Ｚｎ：１８％、Ｎｉ：
１８％、Ｐ ：０．６％、Ｃ ：７％、を含有し、残りを
Ｃｕの組成し、２０％の気孔率を有するＣｕ基焼結合金
を製作し、焼結（Ｓ３）後及びサイジング（Ｓ４）後に
おける摺動面２を写真撮影し、その拡大写真の一部を図
示したものであり、ハッチングが銅表面部分101，クロ
スハッチングが気孔部分102，残りの部分が炭素で覆わ
れた炭素表面部分103であり、このようにサイジングに
より銅が引き伸ばされた様子が示されており、２ｍｍ方
眼のトレース用紙のフレームを写真上に重ね合わせ、方
眼の升目の数を数え、銅表面部分101が189個、炭素表面
部分103が434個となり、この場合、434個を621（189＋4
34）個で割り、炭素被覆率が約７０％が得られた。尚、
表面の気孔部分102は除いて計算する。FIG. 4 shows, by weight%, Zn: 18%, Ni:
A Cu-based sintered alloy containing 18%, P: 0.6%, C: 7% and the rest of Cu and having a porosity of 20% was manufactured, and after sintering (S3) and sizing. (S4) The sliding surface 2 after (S4) is photographed, and a part of the enlarged photograph is shown. The hatching is covered with the copper surface portion 101, the cross hatching is covered with the pore portion 102, and the remaining portion is covered with carbon. It is the carbon surface portion 103, and it is shown that the copper is drawn by the sizing in this way. The frame of the tracing paper of 2 mm grid is superposed on the photograph, the number of squares of the grid is counted, and the copper surface portion 101 Is 189 and the carbon surface portion 103 is 434. In this case, 434 is 621 (189 + 4
It was divided by 34) to obtain a carbon coverage of about 70%. still,
The calculation is performed excluding the surface pore portion 102.
【００２３】このようにサイジング（Ｓ４）を行うこと
により、表面３の炭素を押し潰して軸受１の表面３の５
０％以上を炭素により覆うことができ、表面３を覆う炭
素により軸受１の耐食性を向上することができる。By performing the sizing (S4) in this manner, the carbon on the surface 3 is crushed and 5 of the surface 3 of the bearing 1 is crushed.
0% or more can be covered with carbon, and the carbon covering the surface 3 can improve the corrosion resistance of the bearing 1.
【００２４】このように本実施形態では、請求項１に対
応して、銅系の原料粉末を成形すると共に焼結してなる
焼結合金たる軸受１において、表面３の５０％以上を炭
素で覆ったから、酸性の高温雰囲気中の使用において
も、高い耐食性を備えた焼結合金を得ることができ、ま
た、例えば、酸性の強い硫黄酸化物などに晒されても、
銅と硫黄の化合物が形成され、耐食性を確保することが
でき、この銅を含む化合物により摺動性を確保すること
ができ、排ガス雰囲気などの酸性が強く高温条件で耐久
性を備えた焼結合金を得ることができる。As described above, in the present embodiment, according to claim 1, in the bearing 1 which is a sintered alloy obtained by molding and sintering copper-based raw material powder, 50% or more of the surface 3 is made of carbon. Since it is covered, it is possible to obtain a sintered alloy with high corrosion resistance even when used in an acidic high temperature atmosphere, and, for example, even when exposed to a strongly acidic sulfur oxide,
A compound of copper and sulfur is formed, corrosion resistance can be ensured, slidability can be ensured by this copper-containing compound, and firing bond with high acidity such as exhaust gas atmosphere and durability under high temperature conditions You can get money.
【００２５】また、このように本実施形態では、請求項
２に対応して、原料粉末が炭素を４〜１０重量％含むか
ら、このように原料粉末が炭素を多く含むことにより、
表面３を炭素が覆う割合を大きくすることができる。Further, as described above, in this embodiment, the raw material powder contains 4 to 10% by weight of carbon in accordance with the second aspect, and thus the raw material powder contains a large amount of carbon.
The rate at which the surface 3 is covered with carbon can be increased.
【００２６】また、このように本実施形態では、請求項
３に対応して、焼結合金が摺動部材である軸受１である
から、酸性の高温雰囲気中の使用においても、高い耐食
性を備えた焼結合金を得ることができ、また、例えば、
酸性の強い硫黄酸化物などに晒されても、銅と硫黄の化
合物や銅と他の化合物などが形成され、耐食性を確保す
ることができ、この銅を含む化合物により摺動性を確保
することができ、排ガス雰囲気などの酸性が強く高温条
件で耐久性を備えた軸受１を得ることができる。Further, in this embodiment, since the sintered alloy is the bearing 1 which is a sliding member in this embodiment, it has high corrosion resistance even when used in an acidic high temperature atmosphere. Sintered alloy can be obtained, and, for example,
Even when exposed to highly acidic sulfur oxides, copper and sulfur compounds or copper and other compounds are formed, and corrosion resistance can be ensured. Sliding property is ensured by this copper-containing compound. Therefore, the bearing 1 having strong acidity such as exhaust gas atmosphere and high durability under high temperature conditions can be obtained.
【００２７】このように本実施形態では、請求項４に対
応して、炭素を含む銅系の原料粉末を成形すると共に焼
結して焼結合金たる軸受１を製造する焼結合金の製造方
法において、軸受１をサイジングすることにより表面３
の炭素を押し潰して該表面３の５０％以上を炭素で覆う
から、酸性の高温雰囲気中の使用においても、高い耐食
性を備えた焼結合金を得ることができる。As described above, in this embodiment, according to claim 4, a method for producing a sintered alloy, in which a copper-based raw material powder containing carbon is molded and sintered to produce a sintered alloy bearing 1. At the surface 3 by sizing the bearing 1
Since 50% or more of the surface 3 is crushed and the surface 3 is covered with carbon, a sintered alloy having high corrosion resistance can be obtained even when used in an acidic high temperature atmosphere.
【００２８】なお、本発明は、前記実施形態に限定され
るものではなく、種々の変形実施が可能である。例え
ば、本発明は原料粉末に銅又は銅合金を含むものであれ
ば、各種のものに適用可能である。また、軸受は、実施
形態のものに限らず種々の形状のもの適用可能である。
また、摺動部材も軸受に限らず、摺動部が有る部材であ
れば各種の摺動部材に適用可能である。The present invention is not limited to the above embodiment, but various modifications can be made. For example, the present invention can be applied to various materials as long as the raw material powder contains copper or a copper alloy. Further, the bearing is not limited to that of the embodiment, and various shapes can be applied.
Further, the sliding member is not limited to the bearing, and can be applied to various sliding members as long as it has a sliding portion.
【００２９】[0029]
【発明の効果】請求項１の焼結合金は、銅系の原料粉末
を成形すると共に焼結してなる焼結合金において、表面
の５０％以上を炭素で覆ったものであり、酸性の高温雰
囲気中の使用においても、高い耐食性を備えた焼結合金
を得ることができる。The sintered alloy according to claim 1 is a sintered alloy obtained by molding and sintering a copper-based raw material powder, in which 50% or more of the surface is covered with carbon. Even when used in an atmosphere, a sintered alloy having high corrosion resistance can be obtained.
【００３０】また、請求項２の焼結合金は、請求項１の
効果に加えて、前記原料粉末が炭素を４〜１０重量％含
むものであり、表面を炭素が覆う割合を大きくすること
ができる。In addition to the effect of claim 1, the sintered alloy according to claim 2 is such that the raw material powder contains carbon in an amount of 4 to 10% by weight, and the ratio of carbon covering the surface can be increased. it can.
【００３１】また、請求項３の焼結合金は、請求項１又
は２の効果に加えて、前記焼結合金が摺動部材であり、
酸性の高温雰囲気中の使用においても、高い耐食性を備
えた摺動部品が得られる。In addition to the effect of claim 1 or 2, the sintered alloy of claim 3 is a sliding member,
A sliding component having high corrosion resistance can be obtained even when used in an acidic high temperature atmosphere.
【００３２】請求項４の焼結合金の製造方法は、炭素を
含む銅系の原料粉末を成形すると共に焼結して焼結合金
を製造する焼結合金の製造方法において、前記焼結合金
をサイジングすることにより表面の炭素を押し潰して該
表面の５０％以上を炭素で覆う方法であり、酸性の高温
雰囲気中の使用においても、高い耐食性を備えた焼結合
金を得ることができる。A method for producing a sintered alloy according to a fourth aspect is the method for producing a sintered alloy in which a copper-based raw material powder containing carbon is molded and sintered to produce a sintered alloy. This is a method in which carbon on the surface is crushed by sizing and 50% or more of the surface is covered with carbon, and a sintered alloy having high corrosion resistance can be obtained even when used in an acidic high temperature atmosphere.
【図１】本発明の一実施形態を示す製造方法を説明する
フローチャート図である。FIG. 1 is a flowchart illustrating a manufacturing method according to an embodiment of the present invention.
【図２】同上、焼結合金の斜視図である。FIG. 2 is a perspective view of a sintered alloy of the same.
【図３】同上、サイジングを説明する断面図である。FIG. 3 is a sectional view explaining sizing of the above.
【図４】同上、サイジング後の焼結合金の表面を撮影し
た拡大写真を図面化した図面である。FIG. 4 is a drawing showing an enlarged photograph of the surface of the sintered alloy after sizing.
１ 軸受（焼結合金） ２ 摺動面 ３ 表面 1 Bearing (sintered alloy) 2 Sliding surface 3 surface
Claims (4)
てなる焼結合金において、表面の５０％以上を炭素で覆
ったことを特徴とする焼結合金。1. A sintered alloy obtained by shaping and sintering a copper-based raw material powder, wherein 50% or more of the surface is covered with carbon.
むことを特徴とする請求項１記載の焼結合金。2. The sintered alloy according to claim 1, wherein the raw material powder contains 4 to 10% by weight of carbon.
徴とする請求項１又は２記載の焼結合金。3. The sintered alloy according to claim 1, wherein the sintered alloy is a sliding member.
共に焼結して焼結合金を製造する焼結合金の製造方法に
おいて、前記焼結合金をサイジングすることにより表面
の炭素を押し潰して該表面の５０％以上を炭素で覆うこ
とを特徴とする焼結合金の製造方法。4. A method for producing a sintered alloy, which comprises producing a sintered alloy by molding and sintering a copper-based raw material powder containing carbon, wherein the carbon on the surface is crushed by sizing the sintered alloy. And 50% or more of the surface is covered with carbon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002130943A JP3921683B2 (en) | 2002-05-02 | 2002-05-02 | Manufacturing method of sintered alloy bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002130943A JP3921683B2 (en) | 2002-05-02 | 2002-05-02 | Manufacturing method of sintered alloy bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003328060A true JP2003328060A (en) | 2003-11-19 |
| JP3921683B2 JP3921683B2 (en) | 2007-05-30 |
Family
ID=29695835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002130943A Expired - Fee Related JP3921683B2 (en) | 2002-05-02 | 2002-05-02 | Manufacturing method of sintered alloy bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3921683B2 (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4916161B1 (en) * | 1970-11-18 | 1974-04-20 | ||
| JPS55134102A (en) * | 1979-04-03 | 1980-10-18 | Dowa Mining Co Ltd | Cu-base sintered bearing of high graphite content and production thereof |
| JPS63282221A (en) * | 1987-05-15 | 1988-11-18 | Hitachi Ltd | Manufacture of composite sintered material |
| JPH04157107A (en) * | 1990-10-19 | 1992-05-29 | Koyo Seiko Co Ltd | Manufacture of metallic sliding member |
| JPH0649620A (en) * | 1992-08-03 | 1994-02-22 | Kobe Steel Ltd | Copper or copper alloy tube excellent in pitting corrosion resistance and production therefor |
| JPH06193637A (en) * | 1992-12-25 | 1994-07-15 | Ntn Corp | Rolling bearing |
| JPH0893752A (en) * | 1994-09-29 | 1996-04-09 | Kyocera Corp | Dynamic pressure bearing |
| JPH10226842A (en) * | 1997-02-17 | 1998-08-25 | Tokai Carbon Co Ltd | Metallic fractional material and its production |
| JP2001192754A (en) * | 1999-11-01 | 2001-07-17 | Mitsubishi Materials Corp | BEARING MADE OF GRAPHITE DISPERSION TYPE Cu BASE SINTERED ALLOY OF MOTOR TYPE FUEL PUMP EXHIBITING EXCELLENT WEAR RESISTANCE UNDER HIGH PRESSURE-HIGH SPEED CIRCULATION OF CASOLINE AND MOTOR TYPE FUEL PUMP USING SAME |
| JP2002106443A (en) * | 2000-09-29 | 2002-04-10 | Hitachi Ltd | Fuel pump and cylinder injection engine using it |
| JP2003221605A (en) * | 2002-01-29 | 2003-08-08 | Mitsubishi Materials Corp | Sintered alloy, manufacturing method therefor and motor type fuel pump with bearing consisting of sintered alloy |
-
2002
- 2002-05-02 JP JP2002130943A patent/JP3921683B2/en not_active Expired - Fee Related
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4916161B1 (en) * | 1970-11-18 | 1974-04-20 | ||
| JPS55134102A (en) * | 1979-04-03 | 1980-10-18 | Dowa Mining Co Ltd | Cu-base sintered bearing of high graphite content and production thereof |
| JPS63282221A (en) * | 1987-05-15 | 1988-11-18 | Hitachi Ltd | Manufacture of composite sintered material |
| JPH04157107A (en) * | 1990-10-19 | 1992-05-29 | Koyo Seiko Co Ltd | Manufacture of metallic sliding member |
| JPH0649620A (en) * | 1992-08-03 | 1994-02-22 | Kobe Steel Ltd | Copper or copper alloy tube excellent in pitting corrosion resistance and production therefor |
| JPH06193637A (en) * | 1992-12-25 | 1994-07-15 | Ntn Corp | Rolling bearing |
| JPH0893752A (en) * | 1994-09-29 | 1996-04-09 | Kyocera Corp | Dynamic pressure bearing |
| JPH10226842A (en) * | 1997-02-17 | 1998-08-25 | Tokai Carbon Co Ltd | Metallic fractional material and its production |
| JP2001192754A (en) * | 1999-11-01 | 2001-07-17 | Mitsubishi Materials Corp | BEARING MADE OF GRAPHITE DISPERSION TYPE Cu BASE SINTERED ALLOY OF MOTOR TYPE FUEL PUMP EXHIBITING EXCELLENT WEAR RESISTANCE UNDER HIGH PRESSURE-HIGH SPEED CIRCULATION OF CASOLINE AND MOTOR TYPE FUEL PUMP USING SAME |
| JP2002106443A (en) * | 2000-09-29 | 2002-04-10 | Hitachi Ltd | Fuel pump and cylinder injection engine using it |
| JP2003221605A (en) * | 2002-01-29 | 2003-08-08 | Mitsubishi Materials Corp | Sintered alloy, manufacturing method therefor and motor type fuel pump with bearing consisting of sintered alloy |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3921683B2 (en) | 2007-05-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4701797B2 (en) | Coated iron-based powder for dust core and dust core | |
| JP5504278B2 (en) | Method for producing diffusion-alloyed iron or iron-based powder, diffusion-alloyed powder, composition comprising the diffusion-alloyed powder, and molded and sintered parts produced from the composition | |
| CN105268975B (en) | The preparation method of high-density powder metallurgy metal soft magnetic material | |
| JP2010077515A (en) | Method for producing sintered valve guide | |
| JP4253834B2 (en) | Manufacturing method of sliding parts | |
| JP3873275B2 (en) | Sliding parts and manufacturing method thereof | |
| JP2003328060A (en) | Sintered alloy and manufacturing method therefor | |
| JP4211045B2 (en) | Manufacturing method of sliding parts | |
| CN103861882A (en) | Wire-drawing die for tinned copper wire covered with diamond metal sintering body and preparation method of wire-drawing die | |
| JP2001294905A (en) | Method for producing micromodule gear | |
| JP5177787B2 (en) | Method for producing Fe-based sintered alloy and Fe-based sintered alloy | |
| JPS597324B2 (en) | Manufacturing method for copper-based and iron-based composite layer sintered oil-impregnated bearings | |
| JP5786755B2 (en) | Method for producing ferrous sintered material | |
| JPS6330978B2 (en) | ||
| JPH05263181A (en) | Manufacture of fe base sintered alloy member having high strength and high toughness | |
| JP4407134B2 (en) | Method for producing iron-based sintered body and compression molded body for sintering | |
| JPH07278605A (en) | Production of complicated shaped articles by powder metallurgy | |
| JPH07188714A (en) | Iron-based powder excellent in compactibility | |
| JPH07238302A (en) | Sintered titanium filter and production thereof | |
| JPS6119703A (en) | Preparation of copper infiltrated ferrous sintered body | |
| JP2017128764A (en) | Iron-based sintered slide material and manufacturing method therefor | |
| JP3492884B2 (en) | Method for producing soft magnetic sintered metal | |
| JP3763796B2 (en) | Manufacturing method of sintered member with inner hole with excellent coaxiality accuracy | |
| JPS6346962B2 (en) | ||
| JP2007520635A (en) | Sheet material infiltration of powder metal parts |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20050324 |
|
| A711 | Notification of change in applicant |
Free format text: JAPANESE INTERMEDIATE CODE: A712 Effective date: 20060125 |
|
| RD02 | Notification of acceptance of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7422 Effective date: 20060217 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20060607 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20060619 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20060818 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20061030 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20061228 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20070129 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20070211 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 3921683 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100302 Year of fee payment: 3 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
| R360 | Written notification for declining of transfer of rights |
Free format text: JAPANESE INTERMEDIATE CODE: R360 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100302 Year of fee payment: 3 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313532 |
|
| S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
| R370 | Written measure of declining of transfer procedure |
Free format text: JAPANESE INTERMEDIATE CODE: R370 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110302 Year of fee payment: 4 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130302 Year of fee payment: 6 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140302 Year of fee payment: 7 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |