JPH0735142A - Aluminum bearing - Google Patents
Aluminum bearingInfo
- Publication number
- JPH0735142A JPH0735142A JP5199282A JP19928293A JPH0735142A JP H0735142 A JPH0735142 A JP H0735142A JP 5199282 A JP5199282 A JP 5199282A JP 19928293 A JP19928293 A JP 19928293A JP H0735142 A JPH0735142 A JP H0735142A
- Authority
- JP
- Japan
- Prior art keywords
- aluminum
- soft
- hard
- laser
- bearing
- 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.)
- Withdrawn
Links
Landscapes
- Laser Beam Processing (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ディーゼル機関やター
ビンなどに適用されるアルミ軸受に関し、更に詳細に
は、レーザ表面改質加工したアルミ軸受に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aluminum bearing applied to a diesel engine, a turbine and the like, and more particularly to a laser surface modified aluminum bearing.
【０００２】[0002]
【従来の技術】従来のアルミ軸受は連帯圧接法か遠心鋳
造法により製造されており、軸受面は基本的には１つ材
料から成り、その表面の組織は一様な状態となってい
る。2. Description of the Related Art Conventional aluminum bearings are manufactured by a solid pressure welding method or a centrifugal casting method. The bearing surface is basically made of one material, and the surface structure is uniform.
【０００３】[0003]
【発明が解決しようとする課題】このように従来のアル
ミ軸受は１つの材料から成るため、従来のアルミ軸受の
特性は選定材料によって決定され、高強度であるＳｎ含
有量の少ないアルミニウム合金を用いた場合は、そのま
までは焼付きを起こしやすく、これを防止するために表
面層めっきや軸の焼入れ等、余分な工程が必要となりコ
スト的に高くつく。一方、耐焼付性のよいＳｎ含有量の
多いアルミニウム合金を採用した場合は、強度不足によ
りクラックか剥離等の損傷を生じやすくなる。As described above, since the conventional aluminum bearing is made of one material, the characteristics of the conventional aluminum bearing are determined by the selected material, and the aluminum alloy with high strength and low Sn content is used. If it does, seizure is likely to occur if it is left as it is, and in order to prevent this, extra steps such as surface layer plating and quenching of the shaft are required, which is costly. On the other hand, when an aluminum alloy having a high Sn content and good seizure resistance is adopted, damage such as cracking or peeling easily occurs due to insufficient strength.
【０００４】本発明は、このような従来技術の課題を解
決するためになされたもので、レーザ表面改質加工によ
ってアルミ軸受に軟質部と硬質部とを形成して、耐久性
を向上させたアルミ軸受を提供することを目的とする。The present invention has been made in order to solve the problems of the prior art, and improved durability by forming a soft portion and a hard portion on an aluminum bearing by laser surface modification processing. The purpose is to provide aluminum bearings.
【０００５】[0005]
【課題を解決するための手段】上記の課題を解決するた
めに、本発明は、Ａｌ又はＡｌ−Ｓｎ合金を基材とした
アルミ軸受において、基材表面に軟質材料を添加してレ
ーザ照射により形成した軟質部と、基材表面に直接レー
ザを照射して又は硬質材料を添加してレーザ照射により
形成した硬質部とを混在させたものである。In order to solve the above-mentioned problems, the present invention provides an aluminum bearing using Al or Al-Sn alloy as a base material, in which a soft material is added to the surface of the base material and laser irradiation is performed. The formed soft portion is mixed with the hard portion formed by irradiating the surface of the base material directly with a laser or by adding a hard material to form a laser.
【０００６】[0006]
【作用】上記の手段によれば、レーザ表面改質加工によ
ってアルミ軸受に軟質部と硬質部とを混在させているの
で、軟質部には異物の埋没性、油溜りによる耐焼付性、
片当り時のなじみ性など順応性の向上が期待でき、一方
硬質部には、摩耗率低減及びその強度向上によって変動
荷重に対する負荷能力の増大が期待できる。According to the above means, since the soft and hard parts are mixed in the aluminum bearing by the laser surface modification processing, the soft part has a foreign matter burial property, an oil pool seizure resistance,
Adaptability such as conformability at the time of one-sided contact can be expected, while on the other hand, the hard part can be expected to have an increased load capacity against fluctuating load due to a reduction in wear rate and an increase in its strength.
【０００７】[0007]
【実施例】以下、図面を参照して本発明の実施例につい
て詳細に説明する。図１は、本発明の一実施例に係わる
アルミ軸受へのレーザ表面改質加工を示す図である。Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a diagram showing laser surface modification processing on an aluminum bearing according to an embodiment of the present invention.
【０００８】図１において、アルミ軸受１は半割り型の
軸受となっており、その基材表面には本発明にしたがっ
てレーザ表面改質加工により軟質部２と硬質部３とが混
在して形成されている。In FIG. 1, an aluminum bearing 1 is a half-divided type bearing, and a soft portion 2 and a hard portion 3 are mixedly formed on the surface of a base material by laser surface modification processing according to the present invention. Has been done.
【０００９】すなわち、本発明は、上述した従来技術の
課題を解決するために、高密度熱エネルギー源であるレ
ーザを利用してメタル層の表面改質加工を行うことを考
え、局所的に高エネルギーを集中させた加熱が可能であ
るレーザの特徴を生かして、軸受メタルのある部分には
Ｓｎやホワイトメタルのような低融点の軟質材料を添加
してレーザ照射によりアルミニウムと合金化させて軟質
部を作り、別の部分にはレーザ照射に伴う溶融・急冷凝
固作用により組織を細粒化したり、あるいは硬質材料を
添加してレーザ照射によりアルミニウムの中に分散させ
て硬質部を作り、このようなレーザ表面改質加工により
同一軸受の中に軟質部と硬質部とが混在するような構成
としたものである。That is, in order to solve the above-mentioned problems of the prior art, the present invention considers performing the surface modification processing of the metal layer using a laser which is a high-density heat energy source, and locally improves the surface modification processing. Utilizing the characteristics of a laser that can heat with concentrated energy, a soft material with a low melting point such as Sn or white metal is added to the part where the bearing metal is present, and it is alloyed with aluminum by laser irradiation to soften it. Part is made, and in another part the structure is made finer by the melting and rapid solidification action accompanying laser irradiation, or a hard material is added and dispersed in aluminum by laser irradiation to make a hard part. By the laser surface modification process, a soft portion and a hard portion are mixed in the same bearing.
【００１０】図１に示す実施例では、半割り型のアルミ
軸受１に軟質部２と硬質部３とを１本ずつ交互に配置し
ているが、この配置については格子状にするなどいろい
ろな方法が考えられる。そして、軟質部２は、Ｓｎやホ
ワイトメタルなど軟質材料４を添加した部分に集光レン
ズ５で集めたレーザ光６を照射してアルミメタル７との
合金化により形成させる。この軟質材料４の添加方法と
しては帯状の薄板を置いたり、粉末材料を供給するなど
の方法が考えられる。また、硬質部３はアルミメタル７
の材質によってその影響は異なるが、Ｓｎ含有量の比較
的高いアルミメタル材料については、レーザ光６の照射
によって溶融・急冷凝固の過程を経て組織が細粒化し、
硬度の向上が見込める。一方、Ｓｎ含有量が比較的低
く、その効果（硬度の向上）が小さいと考えられるアル
ミメタル材料については、レーザ光６の照射によってア
ルミメタル７を溶融させて、そこにＡｇかＣｄ等を添
加、分散させて結晶粒の強化により硬度の向上を図る。In the embodiment shown in FIG. 1, the soft parts 2 and the hard parts 3 are alternately arranged one by one in the half-divided aluminum bearing 1, but this arrangement may be varied such as a lattice. A method can be considered. The soft portion 2 is formed by alloying with the aluminum metal 7 by irradiating the portion to which the soft material 4 such as Sn or white metal is added with the laser light 6 collected by the condenser lens 5. As a method of adding the soft material 4, a method of placing a thin strip or supplying a powder material can be considered. The hard part 3 is made of aluminum metal 7
The effect depends on the material, but for aluminum metal material having a relatively high Sn content, the structure becomes fine-grained through the process of melting and rapid solidification by irradiation with laser light 6,
Hardness is expected to improve. On the other hand, for an aluminum metal material which has a relatively low Sn content and is considered to have a small effect (improvement in hardness), the aluminum metal 7 is melted by the irradiation of the laser beam 6 and Ag or Cd is added thereto. , And the hardness is improved by dispersing and strengthening the crystal grains.
【００１１】図２は、このようなレーザ表面改質加工を
利用して軟質部２と硬質部３とを交互に配置させたアル
ミ軸受１の断面状況の一部を示している。FIG. 2 shows a part of the cross section of the aluminum bearing 1 in which the soft portions 2 and the hard portions 3 are alternately arranged by utilizing such laser surface modification processing.
【００１２】[0012]
【発明の効果】以上述べたように、本発明によれば、レ
ーザ表面改質加工技術の利用によってアルミ軸受に軟質
部と硬質部とを自由配置させることが可能であり、これ
により軟質部には埋没性、耐焼付性、なじみ性等を、ま
た硬質部には耐摩耗性、耐焼付性等をそれぞれ付与し、
軸受性能として必要な相反するこれらの特性を各部で分
担することになり、耐久性に優れた軸受ができる。ま
た、レーザ加工及び研削加工が製作工程として増えるだ
けなので、その寿命を考慮するとコストの低減が期待で
きる。As described above, according to the present invention, it is possible to freely dispose the soft portion and the hard portion on the aluminum bearing by utilizing the laser surface modification processing technique. Gives burial, seizure resistance, familiarity, etc., and hard parts wear resistance, seizure resistance, etc., respectively.
These parts, which are contradictory to each other and are required for the bearing performance, are shared by the respective parts, so that the bearing having excellent durability can be obtained. Further, since laser processing and grinding processing only increase as manufacturing steps, cost reduction can be expected considering their life.
【図１】本発明の一実施例に係わるアルミ軸受へのレー
ザ表面改質加工を示す図である。FIG. 1 is a diagram showing laser surface modification processing on an aluminum bearing according to an embodiment of the present invention.
【図２】レーザ表面改質加工を利用して軟質部と硬質部
とを交互に配置させた、本発明に係わるアルミ軸受の断
面状況の一部を示す図である。FIG. 2 is a view showing a part of a cross-sectional situation of an aluminum bearing according to the present invention in which soft portions and hard portions are alternately arranged by utilizing laser surface modification processing.
１ アルミ軸受 ２ 軟質部 ３ 硬質部 ４ 軟質材料 ５ 集光レンズ ６ レーザ光 ７ アルミメタル 1 Aluminum Bearing 2 Soft Part 3 Hard Part 4 Soft Material 5 Condenser Lens 6 Laser Light 7 Aluminum Metal
Claims (1)
ミ軸受において、基材表面に軟質材料を添加してレーザ
照射により形成した軟質部と、基材表面に直接レーザを
照射して又は硬質材料を添加してレーザ照射により形成
した硬質部とを混在させたことを特徴とするアルミ軸
受。1. An aluminum bearing using Al or an Al--Sn alloy as a base material, in which a soft material is added to the surface of the base material to form a soft portion by laser irradiation, and the surface of the base material is directly irradiated with laser or An aluminum bearing characterized by being mixed with a hard portion formed by laser irradiation by adding a hard material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5199282A JPH0735142A (en) | 1993-07-16 | 1993-07-16 | Aluminum bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5199282A JPH0735142A (en) | 1993-07-16 | 1993-07-16 | Aluminum bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0735142A true JPH0735142A (en) | 1995-02-03 |
Family
ID=16405208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5199282A Withdrawn JPH0735142A (en) | 1993-07-16 | 1993-07-16 | Aluminum bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0735142A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6988766B2 (en) | 2003-06-04 | 2006-01-24 | Toyoda Gosei Co., Ltd. | Sealing structure of sliding roof of motor vehicle |
| KR100675994B1 (en) * | 1998-06-02 | 2007-01-29 | 페데랄-모굴 비스바덴 게엠베하 | Half bearing and method for the production thereof |
| JP2007239866A (en) * | 2006-03-08 | 2007-09-20 | Daido Metal Co Ltd | Sliding bearing |
| US7384096B2 (en) | 2005-09-27 | 2008-06-10 | Toyoda Gosei Co., Ltd | Weather strip |
-
1993
- 1993-07-16 JP JP5199282A patent/JPH0735142A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100675994B1 (en) * | 1998-06-02 | 2007-01-29 | 페데랄-모굴 비스바덴 게엠베하 | Half bearing and method for the production thereof |
| US6988766B2 (en) | 2003-06-04 | 2006-01-24 | Toyoda Gosei Co., Ltd. | Sealing structure of sliding roof of motor vehicle |
| US7384096B2 (en) | 2005-09-27 | 2008-06-10 | Toyoda Gosei Co., Ltd | Weather strip |
| JP2007239866A (en) * | 2006-03-08 | 2007-09-20 | Daido Metal Co Ltd | Sliding bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20001003 |