JP2001279421A - Method for producing sliding member - Google Patents
Method for producing sliding memberInfo
- Publication number
- JP2001279421A JP2001279421A JP2000092834A JP2000092834A JP2001279421A JP 2001279421 A JP2001279421 A JP 2001279421A JP 2000092834 A JP2000092834 A JP 2000092834A JP 2000092834 A JP2000092834 A JP 2000092834A JP 2001279421 A JP2001279421 A JP 2001279421A
- Authority
- JP
- Japan
- Prior art keywords
- laser
- sliding
- irradiated
- sliding member
- coating
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/10—Construction relative to lubrication
- F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
- F16C33/103—Construction relative to lubrication with liquid, e.g. oil, as lubricant retained in or near the bearing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/14—Special methods of manufacture; Running-in
Landscapes
- Laser Beam Processing (AREA)
- Coating By Spraying Or Casting (AREA)
- Sliding-Contact Bearings (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、レーザー表面処理
による摺動部材の製造方法、詳しくは、基材（母材）上
の溶射被膜に点状や線状のパターンでレーザーを照射
し、レーザー非照射部とレーザー照射部との硬度差によ
り、主として、仕上げ加工又は摺動によりゆるやかな凹
凸が生じ、凹部が潤滑油の油だまりとなって保油性を向
上させ、耐焼付き性を向上させる摺動部材の製造方法に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a sliding member by laser surface treatment, and more particularly, to a method of irradiating a sprayed coating on a base material (base material) with a laser in a point-like or linear pattern. Due to the difference in hardness between the non-irradiated part and the laser-irradiated part, gradual unevenness mainly occurs due to finishing or sliding, and the concave part becomes a pool of lubricating oil to improve oil retention and to improve seizure resistance. The present invention relates to a method for manufacturing a moving member.
【０００２】[0002]
【従来の技術】従来の摺動部材の製造方法として、例え
ば特開昭６０−６１１８７号公報には、軸受メタル板を
裏金の軸穴円周面に嵌合するように環状に成型して固定
し、不活性ガスシールを行いつつ、レーザービームを照
射して軸受メタル板全体を順次再溶融して裏金に溶接
し、かつ急冷して軸受メタルを微細組織化し、軸受の耐
久性向上を図るようにした軸受製造法が記載されてい
る。2. Description of the Related Art As a conventional method for manufacturing a sliding member, for example, Japanese Unexamined Patent Publication No. 60-61187 discloses a method in which a bearing metal plate is formed into an annular shape so as to fit around a shaft hole circumferential surface of a backing metal and fixed. Then, while performing inert gas sealing, the entire bearing metal plate is sequentially re-melted by laser beam irradiation, welded to the back metal, and quenched to finely structure the bearing metal to improve the durability of the bearing. A bearing manufacturing method is described.
【０００３】また、特開昭５９−１３３８６８号公報に
は、鋳鉄部材の摺動面に、レーザーなどの高密度エネル
ギー加熱源を用いて、スポット状に再溶融部を分散させ
スポット状にセメンタイトを晶出させ、再溶融部の周囲
に黒鉛が分布しその部分を油だまりとするようにした内
燃機関シリンダなどの鋳鉄摺動部材及びその製造方法が
記載されている。また、基材に線爆溶射を行い、線爆溶
射後のホーニングによるクロスハッチを油だまりとする
ことも知られている。Japanese Patent Laid-Open Publication No. Sho 59-133868 discloses that a high-density energy heating source such as a laser is used to disperse a remelted portion in a spot shape on a sliding surface of a cast iron member to form cementite in a spot shape. There is described a cast iron sliding member such as an internal combustion engine cylinder in which graphite is distributed around a remelted portion and the portion is turned into an oil pool, and a method of manufacturing the same. It is also known that wire explosion spraying is performed on a substrate, and a cross hatch formed by honing after wire explosion spraying is used as an oil pool.
【０００４】[0004]
【発明が解決しようとする課題】上記の特開昭６０−６
１１８７号公報記載の軸受製造法においては、表面層の
全面をレーザーにより溶融凝固して組織を改善してお
り、耐摩耗性の向上はなされているが、厳しい摺動条件
で生じる油膜切れに対しては効果がなく、耐焼付き性に
限界がある。SUMMARY OF THE INVENTION The above-mentioned Japanese Patent Application Laid-Open No. 60-6 / 1985.
In the bearing manufacturing method described in Japanese Patent No. 1187, the entire surface of the surface layer is melted and solidified by a laser to improve the structure, and the wear resistance is improved. Has no effect, and the seizure resistance is limited.
【０００５】また、上記の特開昭５９−１３３８６８号
公報記載の鋳鉄摺動部材及びその製造方法においては、
レーザーを用いた表面改質であるが、材料が鋳鉄に限ら
れており、耐摩耗性向上などに限界がある。また、ホー
ニングによるクロスハッチを油だまりとすることは、適
正な表面形状を形成するため加工工程管理を厳しくする
必要がある。[0005] Further, in the cast iron sliding member and the method of manufacturing the same described in JP-A-59-133868,
Although surface modification is performed using a laser, the material is limited to cast iron, and there is a limit in improving wear resistance. In addition, in order to form a cross hatch formed by honing into an oil pool, it is necessary to strictly control processing steps in order to form an appropriate surface shape.
【０００６】本発明は上記の諸点に鑑みなされたもの
で、本発明の目的は、レーザー照射部とレーザー非照射
部の硬度差による選択的摩耗で自然に生じる凹凸により
油だまり部分が形成され、保油性を向上させ、耐焼付き
性を向上させるようにした摺動部材の製造方法を提供す
ることにある。また、本発明の他の目的は、シリンダボ
ア内面などに複合溶射被膜を用い、レーザー照射部とレ
ーザー非照射部の硬度差による選択的摩耗で自然に生じ
る凹凸により油だまり部分が形成され、保油性を向上さ
せ、耐焼付き性を向上させ、鋳鉄に焼きを入れる以上に
耐摩耗性向上が可能となる摺動部材の製造方法を提供す
ることにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is to form an oil pool portion by irregularities which are naturally generated by selective wear due to a difference in hardness between a laser irradiated portion and a non-laser irradiated portion, It is an object of the present invention to provide a method for manufacturing a sliding member that has improved oil retention and seizure resistance. Another object of the present invention is to use a composite sprayed coating on the inner surface of a cylinder bore or the like, and to form an oil pool portion by irregularities that are naturally generated by selective wear due to a difference in hardness between a laser irradiated portion and a laser non-irradiated portion. It is an object of the present invention to provide a method of manufacturing a sliding member which can improve seizure resistance, improve seizure resistance, and improve abrasion resistance more than hardening cast iron.
【０００７】[0007]
【課題を解決するための手段】上記の目的を達成するた
めに、本発明の摺動部材の製造方法は、基材（母材）上
に設けられた溶射被膜に点状、線状などのスポット状の
パターンでレーザーを照射し、部分的に加熱し、望まし
くは加熱、急冷し、組織変化を生じさせて被膜の部分改
質を行い、主として、仕上げ加工時又は摺動時の選択的
摩耗によりレーザー照射部又はレーザー非照射部が凹
み、油だまりとなるようにして、耐焼付き性に優れる摺
動面を形成させるように構成されている（図１〜図３参
照）。この方法において、溶射被膜をＡｌ−Ｓｉ溶射被
膜とすることが好ましい。この場合、Ａｌ−Ｓｉ溶射被
膜のＳｉ量を２０〜４０重量％とすることが好ましい。
Ｓｉ量が２０重量％未満の場合は、硬度差が顕著に表わ
れないという不都合があり、一方、４０重量％を越える
場合は、溶射被膜作製が困難であるという不都合があ
る。摺動面の一例として、軸受又はシリンダボアの摺動
面を挙げることができる。In order to achieve the above object, a method of manufacturing a sliding member according to the present invention is directed to a method of manufacturing a thermal spray coating provided on a base material (base material), such as a dot-like or linear-like coating. Laser irradiation in a spot-like pattern, partial heating, desirably heating and quenching, causing structural change to partially modify the coating, mainly selective wear during finishing or sliding Thus, the laser-irradiated portion or the non-laser-irradiated portion is dented to form an oil pool, thereby forming a sliding surface having excellent seizure resistance (see FIGS. 1 to 3). In this method, the thermal spray coating is preferably an Al-Si thermal spray coating. In this case, the amount of Si in the Al-Si thermal spray coating is preferably set to 20 to 40% by weight.
If the Si content is less than 20% by weight, there is a disadvantage that the difference in hardness is not remarkably exhibited, while if it exceeds 40% by weight, there is a disadvantage that it is difficult to prepare a thermal spray coating. As an example of the sliding surface, a sliding surface of a bearing or a cylinder bore can be mentioned.
【０００８】また、本発明の摺動部材の製造方法は、Ｍ
ｏを主成分とする相とＦｅ又は／及びＣｏを主成分とす
る相が複合相又は層状に重なった状態となった複合溶射
被膜を基材（母材）上に作製し、この溶射被膜に点状、
線状などのスポット状のパターンでレーザーを照射し
て、部分的に加熱し、望ましくは加熱、急冷し、再溶融
凝固させることによりＦｅ又は／及びＣｏを主成分とす
る相とＭｏを主成分とする相を合金化して再溶融凝固し
た部分で硬度を上昇させて耐摩耗性を向上させ、レーザ
ー照射部とレーザー非照射部の硬度の違いにより、主と
して、摺動時に硬度の低いレーザー非照射部で選択的に
摩耗が生じ、ゆるやかな凹凸を形成し凹部が油だまりと
なるようにして、耐焼付き性に優れる摺動面を形成させ
ることを特徴としている（図４、図５参照）。Further, the method for manufacturing a sliding member of the present invention
A composite sprayed coating in which a phase mainly composed of o and a phase mainly composed of Fe or / and Co are superposed in a composite phase or a layered state is produced on a base material (base material). Punctate,
A laser is irradiated in a spot-like pattern such as a line, partially heated, desirably heated, quenched, and re-melted and solidified to obtain a phase mainly containing Fe or / and Co and a main component containing Mo. The hardness of the laser-irradiated part and the non-laser-irradiated part is increased due to the difference in hardness between the laser-irradiated part and non-laser-irradiated part. Abrasion occurs selectively in the portion, forming loose irregularities so that the recesses become oil pools, thereby forming a sliding surface having excellent seizure resistance (see FIGS. 4 and 5).
【０００９】この方法において、摺動面の一例として、
軸受又はシリンダボアの摺動面を挙げることができる。
また、これらの方法において、レーザー照射の熱影響を
基材にまで及ぼすことにより、基材と溶射被膜との密着
性を向上させることができる。In this method, as an example of the sliding surface,
The sliding surface of a bearing or a cylinder bore can be mentioned.
In these methods, by applying the thermal influence of the laser irradiation to the substrate, the adhesion between the substrate and the thermal spray coating can be improved.
【００１０】[0010]
【発明の実施の形態】以下、本発明の実施の形態につい
て説明するが、本発明は下記の実施の形態に何ら限定さ
れるものではなく、適宜変更して実施することができる
ものである。図１は本発明の実施の第１形態による摺動
部材の製造方法により製造された摺動部材の断面を示し
ている。また、図２はレーザー照射による部分改質の平
面模式図で点パターンの場合を示し、図３は線パターン
の場合を示している。１０は摺動部材、例えば軸受の基
材（母材）であり、この基材１０の上に、溶射被膜、例
えばＡｌ−Ｓｉ溶射被膜１２が形成される。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below, but the present invention is not limited to the following embodiments and can be implemented with appropriate modifications. FIG. 1 shows a cross section of a sliding member manufactured by a method for manufacturing a sliding member according to a first embodiment of the present invention. FIG. 2 is a schematic plan view of partial modification by laser irradiation, showing a case of a point pattern, and FIG. 3 shows a case of a line pattern. Reference numeral 10 denotes a sliding member, for example, a base material (base material) of a bearing, on which a thermal spray coating, for example, an Al-Si thermal spray coating 12 is formed.
【００１１】このＡｌ−Ｓｉ溶射被膜１２上に、レーザ
ーをスポット状に照射する。この場合、レーザー照射部
１４は、例えば図２に示すような点パターン、図３に示
すような線パターンなどとすることが好ましい。要は、
溶射被膜１２上にレーザー照射部１４とレーザー非照射
部１６とが交互に形成されるようにすればよい。A laser is irradiated on the Al-Si thermal spray coating 12 in the form of a spot. In this case, it is preferable that the laser irradiation unit 14 has, for example, a point pattern as shown in FIG. 2, a line pattern as shown in FIG. In short,
What is necessary is just to make it the laser irradiation part 14 and the laser non-irradiation part 16 formed on the thermal spray coating 12 alternately.
【００１２】溶射被膜１２にレーザーを照射し、部分的
に加熱した後、冷却し組織変化を生じさせて被膜１２の
部分改質を行う。この部分改質により、レーザー照射部
１４の溶射被膜下面と基材１０の上面との密着強度が増
加する。すなわち、レーザー照射部１４では基材１０ま
で溶融し、溶射被膜１２と基材１０との密着性が向上す
る。Ａｌ−Ｓｉ溶射被膜１２にレーザーを照射すると、
レーザー照射部１４の硬度が小さくなり（軟かくな
り）、レーザー非照射部１６の硬度が大きくなる（硬く
なる）。すなわち、照射部１４は非照射部１６より硬さ
が低下する。このため、表面仕上げ加工及び摺動時の選
択的摩耗により照射部１４が凹み、潤滑油の油だまりと
なって保油性が向上し、被膜１２の耐焼付き性が向上す
る。凹み部の最大深さは約１〜２μm 程度である。Ａｌ
−Ｓｉ溶射被膜１２は層状でもよく、混合層（相）でも
よい。また、Ａｌ−Ｓｉ以外の材質の溶射被膜を用いる
ことも可能で、レーザー照射により硬度差が発現できる
ような溶射被膜であればよい。この場合も、軟かい部分
が凹み、油だまりを形成することになる。The sprayed coating 12 is irradiated with a laser beam, heated partially, and then cooled to cause a structural change to partially modify the coating 12. This partial modification increases the adhesion strength between the lower surface of the thermal spray coating of the laser irradiation section 14 and the upper surface of the substrate 10. That is, the laser irradiation unit 14 melts up to the substrate 10, and the adhesion between the thermal spray coating 12 and the substrate 10 is improved. When the Al-Si sprayed coating 12 is irradiated with a laser,
The hardness of the laser-irradiated portion 14 is reduced (softened), and the hardness of the laser non-irradiated portion 16 is increased (hardened). That is, the irradiating section 14 has a lower hardness than the non-irradiating section 16. For this reason, the irradiated portion 14 is dented due to selective abrasion at the time of surface finishing and sliding, the oil reservoir of the lubricating oil is formed, the oil retaining property is improved, and the seizure resistance of the coating 12 is improved. The maximum depth of the recess is about 1-2 μm. Al
The -Si thermal spray coating 12 may be a layer or a mixed layer (phase). Further, a thermal sprayed coating of a material other than Al-Si can be used, and any thermal sprayed coating capable of expressing a difference in hardness by laser irradiation may be used. Also in this case, the soft portion is dented, and an oil pool is formed.
【００１３】図４は本発明の実施の第２形態で、例え
ば、層状の被膜による摺動部材の製造方法により製造さ
れた摺動部材の断面をしめしている。２０は摺動部材、
例えばシリンダボア部の基材（母材）であり、この基材
２０上に、例えば密着性の向上が期待されるＭｏを主成
分とする層３１を溶射し、膜との密着性の向上を良くす
る。この層３１の上に、例えばレーザー照射により硬化
するＦｅ又はＣｏを主成分とする層２２を溶射する。さ
らにこの層２２の上に例えばＭｏを主成分とする層２４
を溶射し、基材との初期馴染みをよくする。このように
溶射被膜２６を複合相状態に溶射して形成することで溶
射被膜２６に複合的な性質を持たせている。FIG. 4 shows a second embodiment of the present invention, in which, for example, a cross section of a sliding member manufactured by a method of manufacturing a sliding member with a layered coating is shown. 20 is a sliding member,
For example, a base material (base material) of a cylinder bore portion, and a layer 31 containing Mo as a main component, which is expected to have improved adhesion, is sprayed on the base material 20 to improve the adhesion with the film. I do. On this layer 31, for example, a layer 22 mainly composed of Fe or Co which is cured by laser irradiation is sprayed. Further, on this layer 22, for example, a layer 24 containing Mo as a main component.
To improve initial familiarity with the substrate. By spraying the thermal spray coating 26 in a composite phase state in this manner, the thermal spray coating 26 has composite properties.
【００１４】この複合溶射被膜２６上に、レーザーをス
ポット状に照射する。この場合、レーザー照射部２８
は、例えば図２に示すような点パターン、図３に示すよ
うな線パターンなどとすることが好ましい。要は、複合
溶射被膜２６上にレーザー照射部２８とレーザー非照射
部３０とが交互に形成されるようにすればよい。A laser is irradiated on the composite sprayed coating 26 in the form of a spot. In this case, the laser irradiation unit 28
Is preferably, for example, a point pattern as shown in FIG. 2, a line pattern as shown in FIG. In short, the laser-irradiated portions 28 and the non-laser-irradiated portions 30 may be formed alternately on the composite sprayed film 26.
【００１５】溶射被膜２６にレーザーを照射し、部分的
に加熱した後、冷却し組織変化を生じさせて被膜２６の
部分改質を行う。この部分改質により、レーザー照射部
２８の溶射被膜下面と基材１０の上面との密着強度が増
加する。すなわち、レーザー照射部２８では基材２０ま
で溶融し、溶射被膜２６と基材２０との密着性が向上す
る。複合溶射被膜２６にレーザーを照射すると、レーザ
ー照射部２８の硬度が大きくなり（硬くなり）、レーザ
ー非照射部３０の硬度が小さくなる（軟かくなる）。す
なわち、非照射部３０は照射部２８より硬さが低下す
る。このため、表面仕上げ加工及び摺動時（主として摺
動時）の選択的摩耗により非照射部３０が凹み、潤滑油
の油だまりとなって保油性が向上し、被膜２６の耐焼付
き性が向上する。凹み部の最大深さは約１〜２μm 程度
である。複合溶射被膜２６は層状でもよく、混合層
（相）でもよい。また、上記の材質以外の材質の溶射被
膜を用いることも可能で、レーザー照射により硬度差が
発現できるような溶射被膜であればよい。この場合も、
軟かい部分が凹み、油だまりを形成することになる。The sprayed coating 26 is irradiated with a laser beam, heated partially, and then cooled to cause a structural change to partially modify the coating 26. By this partial modification, the adhesion strength between the lower surface of the thermal spray coating of the laser irradiation unit 28 and the upper surface of the substrate 10 increases. That is, in the laser irradiation part 28, the base material 20 is melted, and the adhesion between the thermal spray coating 26 and the base material 20 is improved. When the composite sprayed coating 26 is irradiated with a laser, the hardness of the laser irradiated portion 28 increases (hardens), and the hardness of the laser non-irradiated portion 30 decreases (softens). That is, the hardness of the non-irradiated portion 30 is lower than that of the irradiated portion 28. For this reason, the non-irradiated portion 30 is dented due to surface finishing and selective abrasion at the time of sliding (mainly at the time of sliding), the oil reservoir of lubricating oil is improved, the oil retaining property is improved, and the seizure resistance of the coating 26 is improved. I do. The maximum depth of the recess is about 1-2 μm. The composite thermal spray coating 26 may be a layer or a mixed layer (phase). Further, a sprayed coating of a material other than the above-described materials can be used, and any sprayed coating that can exhibit a difference in hardness by laser irradiation may be used. Again,
The soft parts will dent and form an oil pool.
【００１６】図５は本発明の実施の第３形態を示してい
る。図４は層状の場合を示しているが、図５に示すよう
に、複合層とすることも可能である。３２は複合層で、
Ｍｏを主成分とする層３４とＦｅ又はＣｏを主成分とす
る層３６とからなっている。３８は合金層である。他の
構成及び作用は実施の第２形態の場合と同様である。FIG. 5 shows a third embodiment of the present invention. FIG. 4 shows a case of a layered structure. However, as shown in FIG. 5, a composite layer can be formed. 32 is a composite layer,
It comprises a layer 34 mainly composed of Mo and a layer 36 mainly composed of Fe or Co. 38 is an alloy layer. Other configurations and operations are the same as those in the second embodiment.
【００１７】[0017]
【発明の効果】本発明は上記のように構成されているの
で、つぎのような効果を奏する。 （１） レーザー照射部とレーザー非照射部との硬度差
により、主として、摺動によりゆるやかな凹凸が生じ、
凹部が潤滑油の油だまりとなり、保油性を向上させ、耐
焼付き性の向上を図ることができる。 （２） 溶射被膜を複合相状態に溶射する場合は、上記
（１）の効果に加えて、溶射被膜に複合的な性質を持た
せることができる。As described above, the present invention has the following effects. (1) Due to the difference in hardness between the laser-irradiated part and the non-laser-irradiated part, loose irregularities mainly occur due to sliding.
The concave portion becomes an oil reservoir of the lubricating oil, so that the oil retention can be improved and the seizure resistance can be improved. (2) When the thermal spray coating is sprayed in a composite phase state, the thermal spray coating can have composite properties in addition to the effect of the above (1).
【図１】本発明の実施の第１形態による摺動部材の製造
方法により製造された摺動部材の断面模式図である。FIG. 1 is a schematic sectional view of a sliding member manufactured by a method for manufacturing a sliding member according to a first embodiment of the present invention.
【図２】レーザー照射による部分改質の一例を示す平面
模式図である。FIG. 2 is a schematic plan view showing an example of partial modification by laser irradiation.
【図３】レーザー照射による部分改質の他の例を示す平
面模式図である。FIG. 3 is a schematic plan view showing another example of partial modification by laser irradiation.
【図４】本発明の実施の第２形態による摺動部材の製造
方法により製造された摺動部材の断面模式図である。FIG. 4 is a schematic sectional view of a sliding member manufactured by a method for manufacturing a sliding member according to a second embodiment of the present invention.
【図５】本発明の実施の第３形態による摺動部材の製造
方法により製造された摺動部材の断面模式図である。FIG. 5 is a schematic cross-sectional view of a sliding member manufactured by a method for manufacturing a sliding member according to a third embodiment of the present invention.
１０、２０ 基材（母材） １２ Ａｌ−Ｓｉ溶射被膜 １４、２８ レーザー照射部 １６、３０ レーザー非照射部 ２２、３６ Ｆｅ又は／及びＣｏを主成分とする層 ２４、３４ Ｍｏを主成分とする層 ２６ 複合溶射被膜 ３１ Ｍｏを主成分とする層 ３２ 複合層 ３８ 合金層 10, 20 Base material (base material) 12 Al-Si sprayed coating 14, 28 Laser irradiated part 16, 30 Laser non-irradiated part 22, 36 Layer containing Fe or / and Co as main component 24, 34 Mo as main component Layer 26 composite sprayed coating 31 layer mainly composed of Mo 32 composite layer 38 alloy layer
─────────────────────────────────────────────────────
────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成１２年３月３１日（２０００．３．３
１）[Submission date] March 31, 2000 (200.3.3.
1)
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００８[Correction target item name] 0008
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００８】また、本発明の摺動部材の製造方法は、Ｍ
ｏを主成分とする相とＦｅ又は／及びＣｏを主成分とす
る相が複合相又は層状に重なった状態となった複合溶射
被膜を基材（母材）上に作製し、この溶射被膜に点状、
線状などのスポット状のパターンでレーザーを照射し
て、部分的に加熱し、望ましくは加熱、急冷し、再溶融
凝固させることによりＦｅ又は／及びＣｏを主成分とす
る相とＭｏを主成分とする相を合金化して再溶融凝固し
た部分で硬度を上昇させて耐摩耗性を向上させ、レーザ
ー照射部とレーザー非照射部の硬度の違いにより、主と
して、仕上げ加工時又は摺動時に硬度の低いレーザー非
照射部で選択的に摩耗が生じ、ゆるやかな凹凸を形成し
凹部が油だまりとなるようにして、耐焼付き性に優れる
摺動面を形成させることを特徴としている（図４、図５
参照）。Further, the method for manufacturing a sliding member of the present invention
A composite sprayed coating in which a phase mainly composed of o and a phase mainly composed of Fe or / and Co are superposed in a composite phase or a layered state is produced on a base material (base material). Punctate,
A laser is irradiated in a spot-like pattern such as a line, partially heated, desirably heated, quenched, and re-melted and solidified to obtain a phase mainly containing Fe or / and Co and a main component containing Mo. The hardness is increased by increasing the hardness at the part that has been alloyed and re-melted and solidified to improve the wear resistance, and the difference in hardness between the laser irradiated part and the laser non-irradiated part is mainly due to the hardness during finishing or sliding. Abrasion occurs selectively in the low laser non-irradiated portion, forming gradual irregularities so that the concave portions become oil pools, thereby forming a sliding surface having excellent seizure resistance (FIGS. 4 and 4). 5
reference).
【手続補正２】[Procedure amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１５[Correction target item name] 0015
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【００１５】溶射被膜２６にレーザーを照射し、部分的
に加熱した後、冷却し組織変化を生じさせて被膜２６の
部分改質を行う。この部分改質により、レーザー照射部
２８の溶射被膜下面と基材２０の上面との密着強度が増
加する。すなわち、レーザー照射部２８では基材２０ま
で溶融し、溶射被膜２６と基材２０との密着性が向上す
る。複合溶射被膜２６にレーザーを照射すると、レーザ
ー照射部２８の硬度が大きくなり（硬くなり）、レーザ
ー非照射部３０の硬度が小さくなる（軟かくなる）。す
なわち、非照射部３０は照射部２８より硬さが低下す
る。このため、表面仕上げ加工及び摺動時（主として摺
動時）の選択的摩耗により非照射部３０が凹み、潤滑油
の油だまりとなって保油性が向上し、被膜２６の耐焼付
き性が向上する。凹み部の最大深さは約１〜２μm 程度
である。複合溶射被膜２６は層状でもよく、混合層
（相）でもよい。また、上記の材質以外の材質の溶射被
膜を用いることも可能で、レーザー照射により硬度差が
発現できるような溶射被膜であればよい。この場合も、
軟かい部分が凹み、油だまりを形成することになる。The sprayed coating 26 is irradiated with a laser beam, heated partially, and then cooled to cause a structural change to partially modify the coating 26. By this partial modification, the adhesion strength between the lower surface of the thermal spray coating of the laser irradiation section 28 and the upper surface of the substrate 20 increases. That is, in the laser irradiation part 28, the base material 20 is melted, and the adhesion between the thermal spray coating 26 and the base material 20 is improved. When the composite sprayed coating 26 is irradiated with a laser, the hardness of the laser irradiated portion 28 increases (hardens), and the hardness of the laser non-irradiated portion 30 decreases (softens). That is, the hardness of the non-irradiated portion 30 is lower than that of the irradiated portion 28. For this reason, the non-irradiated portion 30 is dented due to surface finishing and selective abrasion at the time of sliding (mainly at the time of sliding), the oil reservoir of lubricating oil is improved, the oil retaining property is improved, and the seizure resistance of the coating 26 is improved. I do. The maximum depth of the recess is about 1-2 μm. The composite thermal spray coating 26 may be a layer or a mixed layer (phase). Further, a sprayed coating of a material other than the above-described materials can be used, and any sprayed coating that can exhibit a difference in hardness by laser irradiation may be used. Again,
The soft parts will dent and form an oil pool.
【手続補正３】[Procedure amendment 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１６[Correction target item name] 0016
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【００１６】図５は本発明の実施の第３形態を示してい
る。図４は層状の場合を示しているが、図５に示すよう
に、複合層とすることも可能である。３２は複合層で、
Ｍｏを主成分とする層３４とＦｅ又はＣｏを主成分とす
る層３６とからなっている。３８はレーザー照射部であ
る。他の構成及び作用は実施の第２形態の場合と同様で
ある。FIG. 5 shows a third embodiment of the present invention. FIG. 4 shows a case of a layered structure. However, as shown in FIG. 5, a composite layer can be formed. 32 is a composite layer,
It comprises a layer 34 mainly composed of Mo and a layer 36 mainly composed of Fe or Co. Reference numeral 38 denotes a laser irradiation unit . Other configurations and operations are the same as those in the second embodiment.
【手続補正４】[Procedure amendment 4]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１７[Correction target item name] 0017
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【００１７】[0017]
【発明の効果】本発明は上記のように構成されているの
で、つぎのような効果を奏する。 （１） レーザー照射部とレーザー非照射部との硬度差
により、主として、仕上げ加工時又は摺動によりゆるや
かな凹凸が生じ、凹部が潤滑油の油だまりとなり、保油
性を向上させ、耐焼付き性の向上を図ることができる。 （２） 溶射被膜を複合相状態に溶射する場合は、上記
（１）の効果に加えて、溶射被膜に複合的な性質を持た
せることができる。As described above, the present invention has the following effects. (1) Due to the difference in hardness between the laser-irradiated part and the non-laser-irradiated part, loose irregularities mainly occur during finishing or sliding, and the concave parts become oil pools of lubricating oil, improving oil retention and seizure resistance. Can be improved. (2) When the thermal spray coating is sprayed in a composite phase state, the thermal spray coating can have composite properties in addition to the effect of the above (1).
【手続補正５】[Procedure amendment 5]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】図面の簡単な説明[Correction target item name] Brief description of drawings
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明の実施の第１形態による摺動部材の製造
方法により製造された摺動部材の断面模式図である。FIG. 1 is a schematic sectional view of a sliding member manufactured by a method for manufacturing a sliding member according to a first embodiment of the present invention.
【図２】レーザー照射による部分改質の一例を示す平面
模式図である。FIG. 2 is a schematic plan view showing an example of partial modification by laser irradiation.
【図３】レーザー照射による部分改質の他の例を示す平
面模式図である。FIG. 3 is a schematic plan view showing another example of partial modification by laser irradiation.
【図４】本発明の実施の第２形態による摺動部材の製造
方法により製造された摺動部材の断面模式図である。FIG. 4 is a schematic sectional view of a sliding member manufactured by a method for manufacturing a sliding member according to a second embodiment of the present invention.
【図５】本発明の実施の第３形態による摺動部材の製造
方法により製造された摺動部材の断面模式図である。FIG. 5 is a schematic cross-sectional view of a sliding member manufactured by a method for manufacturing a sliding member according to a third embodiment of the present invention.
【符号の説明】 １０、２０ 基材（母材） １２ Ａｌ−Ｓｉ溶射被膜 １４、２８、３８ レーザー照射部 １６、３０ レーザー非照射部 ２２、３６ Ｆｅ又は／及びＣｏを主成分とする層 ２４、３１、３４ Ｍｏを主成分とする層 ２６ 複合溶射被膜 ３２ 複合層 DESCRIPTION OF SYMBOLS 10, 20 Base material (base material) 12 Al-Si thermal spray coating 14 , 28 , 38 Laser irradiation part 16, 30 Laser non-irradiation part 22, 36 Layer mainly composed of Fe or / Co 24 , 31, the 34 Mo as a main component layer 26 composite sprayed the film 32 composite layer
【手続補正６】[Procedure amendment 6]
【補正対象書類名】図面[Document name to be amended] Drawing
【補正対象項目名】図５[Correction target item name] Fig. 5
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【図５】 FIG. 5
フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｆ１６Ｊ 10/04 Ｆ１６Ｊ 10/04 // Ｃ２２Ｃ 21/02 Ｃ２２Ｃ 21/02 (72)発明者 森 崇 兵庫県明石市川崎町１番１号 川崎重工業 株式会社明石工場内 (72)発明者 苧野 兵衛 兵庫県明石市川崎町１番１号 川崎重工業 株式会社明石工場内 Ｆターム(参考） 3J011 AA07 CA01 CA02 DA02 JA02 LA04 MA03 SB02 3J044 AA12 BA02 BB07 BB21 BC13 EA10 4E068 AH00 DA02 4K031 AA02 AB02 AB04 AB08 CB08 CB09 CB21 CB33 CB37 FA02Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat II (reference) F16J 10/04 F16J 10/04 // C22C 21/02 C22C 21/02 (72) Inventor Takashi Mori Kawasaki, Akashi City, Hyogo Prefecture 1-1, Kawasaki Heavy Industries, Ltd. Akashi Factory (72) Inventor Hyoe Ramino 1-1, Kawasaki-cho, Akashi City, Hyogo Prefecture Kawasaki Heavy Industries, Ltd. Akashi Factory Co., Ltd. F-term (reference) 3J044 AA12 BA02 BB07 BB21 BC13 EA10 4E068 AH00 DA02 4K031 AA02 AB02 AB04 AB08 CB08 CB09 CB21 CB33 CB37 FA02
Claims (7)
状などのパターンでレーザーを照射し、部分的に加熱し
組織変化を生じさせて被膜の部分改質を行い、主とし
て、仕上げ加工時又は摺動時の選択的摩耗によりレーザ
ー照射部又はレーザー非照射部が凹み、油だまりとなる
ようにして、耐焼付き性に優れる摺動面を形成させるこ
とを特徴とする摺動部材の製造方法。Claims 1. A sprayed coating provided on a base material is irradiated with a laser in a dot-like or linear pattern, and partially heated to cause a structural change to partially modify the coating. A sliding member characterized in that a laser-irradiated part or a laser non-irradiated part is dented by selective wear at the time of finishing processing or sliding and becomes an oil pool, thereby forming a sliding surface having excellent seizure resistance. Manufacturing method.
求項１記載の摺動部材の製造方法。2. The method according to claim 1, wherein the thermal spray coating is an Al—Si thermal spray coating.
０重量％とする請求項２記載の摺動部材の製造方法。3. An Al—Si sprayed coating having a Si content of 20 to 4
The method for producing a sliding member according to claim 2, wherein the amount is 0% by weight.
である請求項１、２又は３記載の摺動部材の製造方法。4. The method for manufacturing a sliding member according to claim 1, wherein the sliding surface is a sliding surface of a bearing or a cylinder bore.
Ｃｏを主成分とする相の複合相状態又は層状に重なった
状態となった複合溶射被膜を基材上に作製し、この溶射
被膜に点状、線状などのパターンでレーザーを照射し
て、部分的に加熱し再溶融凝固させることによりＦｅ又
は／及びＣｏを主成分とする相とＭｏを主成分とする相
を合金化して再溶融凝固した部分で硬度を上昇させて耐
摩耗性を向上させ、レーザー照射部とレーザー非照射部
の硬度の違いにより、主として、仕上げ加工時又は摺動
時に硬度の低いレーザー非照射部で選択的に摩耗が生
じ、ゆるやかな凹凸を形成し凹部が油だまりとなるよう
にして、耐焼付き性に優れる摺動面を形成させることを
特徴とする摺動部材の製造方法。5. A composite sprayed coating in which a phase mainly composed of Mo and a phase mainly composed of Fe and / or Co are superposed or formed in a layered state on a substrate, and the thermal spraying is performed. The film is irradiated with a laser in a pattern such as a dot or a line, and is partially heated and re-melted and solidified to alloy the phase mainly composed of Fe and / or Co with the phase mainly composed of Mo. Increase the hardness in the re-melted and solidified part to improve wear resistance, and due to the difference in hardness between the laser irradiated part and the laser non-irradiated part, mainly in the laser non-irradiated part with low hardness during finishing or sliding. A method for manufacturing a sliding member, characterized by selectively forming abrasion, forming gradual unevenness and forming an oil pool in a recess to form a sliding surface having excellent seizure resistance.
である請求項５記載の摺動部材の製造方法。6. The method according to claim 5, wherein the sliding surface is a sliding surface of a bearing or a cylinder bore.
すことにより、基材と溶射被膜との密着性を向上させる
請求項１〜６のいずれかに記載の摺動部材の製造方法。7. The method for manufacturing a sliding member according to claim 1, wherein the thermal effect of the laser irradiation is exerted on the base material to improve the adhesion between the base material and the thermal spray coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000092834A JP3234209B2 (en) | 2000-03-30 | 2000-03-30 | Manufacturing method of sliding member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000092834A JP3234209B2 (en) | 2000-03-30 | 2000-03-30 | Manufacturing method of sliding member |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001279421A true JP2001279421A (en) | 2001-10-10 |
| JP3234209B2 JP3234209B2 (en) | 2001-12-04 |
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ID=18608102
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|---|---|---|---|
| JP2000092834A Expired - Fee Related JP3234209B2 (en) | 2000-03-30 | 2000-03-30 | Manufacturing method of sliding member |
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| Country | Link |
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| JP (1) | JP3234209B2 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006002942A (en) * | 2004-06-16 | 2006-01-05 | Daimler Chrysler Ag | Bearing shell made of hybrid material and method of manufacturing bearing shell |
| WO2006070736A1 (en) * | 2004-12-28 | 2006-07-06 | Taiho Kogyo Co., Ltd. | Shoe |
| KR100870675B1 (en) | 2004-12-28 | 2008-11-26 | 다이호 고교 가부시키가이샤 | Shoe |
| US9021901B2 (en) | 2004-12-28 | 2015-05-05 | Taiho Kogyo Co., Ltd. | Shoe |
| WO2006117901A1 (en) * | 2005-04-27 | 2006-11-09 | Taiho Kogyo Co., Ltd. | Sliding device |
| KR100888016B1 (en) | 2005-04-27 | 2009-03-09 | 다이호 고교 가부시키가이샤 | Sliding device |
| US8136417B2 (en) | 2005-04-27 | 2012-03-20 | Taiho Kogyo Co., Ltd. | Sliding device |
| JP2008091681A (en) * | 2006-10-03 | 2008-04-17 | Fuji Xerox Co Ltd | Thin-film support substrate and its manufacturing method |
| JP2015196176A (en) * | 2014-04-01 | 2015-11-09 | 新日本溶業株式会社 | Surface modification method by ceramics |
| JP2021080524A (en) * | 2019-11-20 | 2021-05-27 | 株式会社荏原製作所 | Corrosive wear resistant and wear resistant alloy film and heat transfer pipe, method for manufacturing the same and method for repairing heat transfer pipe |
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| Publication number | Publication date |
|---|---|
| JP3234209B2 (en) | 2001-12-04 |
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