JPH0681030A - Sliding member excellent in seizure resistance and its production - Google Patents
Sliding member excellent in seizure resistance and its productionInfo
- Publication number
- JPH0681030A JPH0681030A JP32689991A JP32689991A JPH0681030A JP H0681030 A JPH0681030 A JP H0681030A JP 32689991 A JP32689991 A JP 32689991A JP 32689991 A JP32689991 A JP 32689991A JP H0681030 A JPH0681030 A JP H0681030A
- Authority
- JP
- Japan
- Prior art keywords
- sliding member
- hardened
- laser beam
- quench
- circular cross
- 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
Landscapes
- Heat Treatment Of Articles (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は耐焼付き性に優れた摺動
部材およびその製造方法に係り、特に過酷な条件下で使
用される回転部材用摺動部材およびその製造方法に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sliding member having excellent seizure resistance and a manufacturing method thereof, and more particularly to a sliding member for a rotating member used under severe conditions and a manufacturing method thereof.
【０００２】[0002]
【従来の技術】従来、鉄鋼材料において、摩擦摺動面の
耐摩耗性を高めるために、浸炭や窒化もしくは焼入れ硬
化等の表面処理が行われているが、摺動面に潤滑性を保
ち、高荷重下においても焼付きを防止するには、摺動面
に油膜その他の潤滑剤の存在が不可欠である。特に過酷
な条件下で使用される回転部材用摺動部材においては、
しばしば油を補供することも不可能であり、その結果焼
付きを起すことも少くない。2. Description of the Related Art Conventionally, in steel materials, surface treatment such as carburizing, nitriding or quench hardening has been carried out in order to enhance the wear resistance of friction sliding surfaces. In order to prevent seizure even under a high load, the presence of an oil film or other lubricant on the sliding surface is essential. Especially in the sliding member for rotating members used under severe conditions,
It is often impossible to supplement the oil, and as a result, seizure is less likely to occur.
【０００３】[0003]
【発明が解決しようとする課題】本発明の目的は、円形
断面を有する摺動部材において、特にしばしば潤滑剤の
供給が困難であり、かつ高温、高荷重等の過酷な条件下
においても焼付きを起すことのない摺動部材およびその
効果的な製造方法を提供するにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a sliding member having a circular cross section, in which it is particularly difficult to supply a lubricant, and seizure occurs even under severe conditions such as high temperature and high load. (EN) Provided is a sliding member which does not cause an occurrence and an effective manufacturing method thereof.
【０００４】[0004]
【課題を解決するための手段】本発明の要旨とするとこ
ろは次のとおりである。 （１） 円形断面を有する摺動部材において、外周にス
パイラル状もしくは網目状に突起して形成された焼入硬
化部と、前記焼入硬化部間に介在する軟質凹部と、を有
することを特徴とする耐焼付き性に優れた摺動部材。 （２） 円形断面を有する摺動部材の製造方法におい
て、前記円形断面部材をその中心軸がレーザー光線の光
軸に対して垂直になるように回転装置に取付け一定速度
で回転すると共に中心軸方向に移動しつつレーザー光線
を該部材の外周部に照射する工程と、前記焼入硬化した
摺動部材を研磨する工程と、を有して成ることを特徴と
する耐焼付き性に優れた摺動部材の製造方法。 （３） 円形断面を有する摺動部材の製造方法におい
て、前記円形断面部材をその中心軸がレーザー光線の光
軸に対して垂直になるように回転装置に取付け一定速度
で回転すると共に中心軸方向に移動しつつレーザー光線
を該部材の外周部に照射する第１工程と、前記円形断面
部材の回転および中心軸方向の移動を反対方向として第
１工程と同様にレーザー光線を照射する第２工程と、前
記焼入硬化した摺動部材を研磨する工程と、を有して成
ることを特徴とする耐焼付き性に優れた摺動部材の製造
方法。The gist of the present invention is as follows. (1) A sliding member having a circular cross section is characterized by having a quench-hardened portion formed on the outer periphery by projecting in a spiral shape or a mesh shape, and a soft concave portion interposed between the quench-hardened portions. A sliding member with excellent seizure resistance. (2) In a method of manufacturing a sliding member having a circular cross section, the circular cross section member is attached to a rotating device so that its central axis is perpendicular to the optical axis of the laser beam, and is rotated at a constant speed and in the central axis direction. A sliding member having excellent seizure resistance, which comprises a step of irradiating a laser beam on the outer peripheral portion of the member while moving, and a step of polishing the quench-hardened sliding member. Production method. (3) In the method for manufacturing a sliding member having a circular cross section, the circular cross section member is attached to a rotating device so that its central axis is perpendicular to the optical axis of the laser beam, and is rotated at a constant speed and in the central axis direction. A first step of irradiating a laser beam to the outer peripheral portion of the member while moving, a second step of irradiating a laser beam in the same manner as the first step with the rotation and movement of the circular cross-section member in the opposite directions as opposite directions; A method of manufacturing a sliding member having excellent seizure resistance, which comprises a step of polishing a quenching-hardened sliding member.
【０００５】本発明の詳細を添付図面を参照して説明す
る。図１、図２は本発明による摺動部材の外面を示す斜
視図であり、図１は外周にスパイラル状に形成された焼
入硬化部２を示し、図２は外周に格子状もしくは網目状
に形成された焼入硬化部２を示し、焼入硬化部２は、図
３の表面断面図に示す如く、その他の軟質部４よりやや
突起して形成され、軟質部４は凹部を形成している。か
くの如く本発明による摺動部材は、外周にスパイラル状
もしくは網目状に突起して形成された焼入硬化部２と、
この焼入硬化部２間に介在する軟質凹部４とを有してい
ることが特徴であって、摺動部材として使用する場合
に、焼入硬化部２は回転部材と直接接触して摺動する場
合、高い耐摩耗性を示し、かつ供給した潤滑剤は軟質凹
部４にプール状に保持されるので過酷な条件下で使用し
ても焼付きを起すことがきわめて少いのが特徴である。The details of the present invention will be described with reference to the accompanying drawings. 1 and 2 are perspective views showing the outer surface of a sliding member according to the present invention. FIG. 1 shows a quench-hardened portion 2 formed in a spiral shape on the outer circumference, and FIG. 2 shows a lattice shape or a mesh shape on the outer circumference. FIG. 3 shows the quench-hardened part 2 formed on the surface of the hard-hardened part 2. The quench-hardened part 2 is formed so as to slightly project from the other soft part 4 as shown in the surface sectional view of FIG. ing. As described above, the sliding member according to the present invention includes the quench-hardened portion 2 formed on the outer periphery by projecting in a spiral shape or a mesh shape,
It is characterized in that it has a soft concave portion 4 interposed between the quench-hardened portions 2, and when used as a sliding member, the quench-hardened portion 2 slides in direct contact with the rotating member. In this case, the lubricant exhibits high wear resistance, and since the supplied lubricant is retained in the soft recess 4 in a pool shape, seizure hardly occurs even when used under severe conditions. .
【０００６】次に本発明による摺動部材の製造方法につ
いて説明する。本発明において使用する摺動部材の材料
については特に限定の要がないが、表１に示す如き組成
を有するＪＩＳ ＳＡＥ−４１３０等が望ましい。Next, a method of manufacturing the sliding member according to the present invention will be described. The material of the sliding member used in the present invention is not particularly limited, but JIS SAE-4130 or the like having the composition shown in Table 1 is preferable.
【表１】 本発明による摺動部材のスパイラル状もしくは網目状の
焼入硬化部２を形成するにレーザー光線を用いる。これ
は限定領域の焼入加熱には局部的に作用する高エネルギ
ー密度の熱源であるレーザー光線によってのみ可能であ
るからである。しかもレーザー光線による焼入れには急
冷のための油や水が不要であり、かつ熱歪、変態歪によ
る焼入歪がほとんどないからであって、本発明の目的は
レーザー焼入れによってのみ達成される。[Table 1] A laser beam is used to form the quench-hardened portion 2 having a spiral shape or a mesh shape of the sliding member according to the present invention. This is because quenching heating in a limited area is possible only with a laser beam, which is a heat source with a high energy density that acts locally. Moreover, quenching with a laser beam does not require oil or water for quenching, and there is almost no quenching strain due to thermal strain or transformation strain, and the object of the present invention is achieved only by laser quenching.
【０００７】レーザー光線の出力は、目的とする摺動部
材の大きさによって異なるが、通常４００〜８００Ｗの
ものを使用し、いずれも照射位置は焦点より３０mm以上
離し、照射移動速度を１ｍ／min以上とする時の、摺動
部材の焼入部体積（直径mm×深さmm）はそれぞれ表２の
とおりである。The output of the laser beam varies depending on the size of the intended sliding member, but normally a laser beam of 400 to 800 W is used, and the irradiation position is 30 mm or more away from the focus, and the irradiation moving speed is 1 m / min or more. Table 2 shows the volume of the quenching portion of the sliding member (diameter mm x depth mm).
【表２】 上記レーザー光線照射装置による焼入れを実施例に基づ
いて説明する。[Table 2] Quenching by the laser beam irradiation device will be described based on examples.
【０００８】(ａ)スパイラル模様の焼入硬化部を形成す
る場合 円形断面を有する摺動部材を、その中心軸がレーザー光
線の光軸に対して垂直になるように回転装置に取付け、
一定速度で回転すると同時に、一定速度で軸方向に移動
させつつ、レーザー光線を該摺動部材の外周面に照射す
る。その際、焦点は被照射面より一定距離上方にあるよ
うにして、被照射面が溶融しないようにする必要があ
る。この装置において、回転装置の回転速度および軸方
向への移動速度を適当に選べば任意のスパイラル模様の
焼入硬化部を形成することができる。 (ｂ)格子状もしくは網目模様の焼入硬化部を形成する場
合 この場合は(ａ)で述べた方法で先ずスパイラル模様の焼
入硬化部を第１工程で形成し、次に第１工程と回転およ
び中心軸方向の移動を反対方向として第１工程と同様に
レーザー光線を照射する第２工程を加えればよい。(A) When forming a quench-hardened portion having a spiral pattern A sliding member having a circular cross section is attached to a rotating device so that its central axis is perpendicular to the optical axis of the laser beam,
The laser beam is applied to the outer peripheral surface of the sliding member while rotating at a constant speed and moving in the axial direction at a constant speed. At that time, it is necessary to make the focal point a certain distance above the irradiated surface so that the irradiated surface does not melt. In this apparatus, a quench hardening portion having an arbitrary spiral pattern can be formed by appropriately selecting the rotation speed of the rotating device and the moving speed in the axial direction. (b) In the case of forming a quench-hardened portion having a lattice pattern or a mesh pattern In this case, the quench-hardened portion having a spiral pattern is first formed in the first step by the method described in (a), and then the first step is performed. A second step of irradiating with a laser beam may be added in the same manner as the first step with the rotation and the movement in the central axis direction being opposite directions.
【０００９】(ｃ)レーザー光線による焼入れは、レーザ
ー光線の出力ならびに回転速度、軸方向の移動速度を調
整することにより任意の模様および焼入部体積を有する
焼入部を形成することができ、この場合レーザー光線に
よる限られた狭い領域の急速加熱であるため、レーザー
光線照射後は急速に冷却し焼入組織に変態する。この焼
入工程終了後、該摺動部材全体を研磨する。この研磨工
程においては、焼入硬化部２は硬度が大であるので、ほ
とんど摩耗されないが、焼入硬化部２間に介在する軟質
部４は、図３の表面部断面図にて示されるように研磨に
より凹部を形成し軟質凹部４となる。(C) In quenching with a laser beam, a hardened portion having an arbitrary pattern and a hardened portion volume can be formed by adjusting the output of the laser beam, the rotation speed, and the moving speed in the axial direction. In this case, the laser beam is used. Since it is a rapid heating in a limited narrow area, it is rapidly cooled and transformed into a quenched structure after laser beam irradiation. After the completion of this quenching step, the entire sliding member is polished. In this polishing step, since the quench-hardened portion 2 has a high hardness, it is hardly worn, but the soft portion 4 interposed between the quench-hardened portions 2 is as shown in the surface sectional view of FIG. Then, a concave portion is formed by polishing to form a soft concave portion 4.
【００１０】[0010]
【作用】上記の如く、本発明による摺動部材はレーザー
光線により焼入れされた焼入硬化部２と、焼入後の研磨
により摩耗形成された軟質凹部４とを有しているので、
使用時においては、油等の潤滑剤が軟質凹部４にプール
状をなして溜り、永く良好な潤滑状態を保持すると共
に、スパイラル状もしくは格子状、網目状に形成された
焼入硬化部２は、回転体の回転に対して良好な耐摩耗性
状態を保持し得るので、両者の相乗効果によってきわめ
て優れた耐焼付き性を示す。従って高温、高荷重等の過
酷な条件下において使用される摺動部材として優れた効
果を発揮することができる。As described above, the sliding member according to the present invention has the quench-hardened portion 2 hardened by the laser beam and the soft concave portion 4 formed by abrasion after the hardening.
At the time of use, a lubricant such as oil accumulates in the soft concave portion 4 in a pool shape and maintains a good lubricating state for a long time, and the quench-hardened portion 2 formed in a spiral shape, a lattice shape, or a mesh shape is Since a good wear resistance state can be maintained with respect to the rotation of the rotating body, an extremely excellent seizure resistance is exhibited by the synergistic effect of the two. Therefore, it is possible to exert excellent effects as a sliding member used under severe conditions such as high temperature and high load.
【００１１】[0011]
【発明の効果】本発明による摺動部材は、レーザー光線
の照射により焼入れされたスパイラル模様もしくは格子
状ないし網目状の焼入硬化部と、該焼入硬化部間に介在
する軟質凹部とを有しているので、実使用時に軟質凹部
が潤滑剤のプールとなり、また焼入硬化部は耐摩耗性に
優れているので、回転体との摺動において極めて優れた
耐焼付き性を示し、高温、高荷重等の過酷な条件下にお
いてもきわめて優れた摺動部材として使用することがで
きた。The sliding member according to the present invention has a quench-hardened portion of a spiral pattern or a lattice shape or a mesh which is hardened by irradiation of a laser beam, and a soft concave portion interposed between the hardened portions. Since the soft recesses become a pool of lubricant during actual use and the quench-hardened part has excellent wear resistance, it exhibits extremely excellent seizure resistance in sliding with the rotating body, and at high temperatures and high temperatures. It could be used as a very excellent sliding member even under severe conditions such as load.
【図１】焼入硬化部がスパイラル状の本発明の摺動部材
を示す斜視図である。FIG. 1 is a perspective view showing a sliding member of the present invention in which a quench-hardened portion has a spiral shape.
【図２】焼入硬化部が格子状もしくは網目状を呈する本
発明の摺動部材を示す斜視図である。FIG. 2 is a perspective view showing a sliding member of the present invention in which a quench-hardened portion has a lattice shape or a mesh shape.
【図３】焼入硬化された凸部と、その間に介在する軟質
凹部とを有する本発明の摺動部材の表面部の深さ方向断
面図である。FIG. 3 is a depth-direction cross-sectional view of a surface portion of a sliding member of the present invention having quench-hardened convex portions and soft concave portions interposed therebetween.
２ 焼入硬化部 ４ 軟質凹部 ６ 凹部 2 Quench hardening part 4 Soft recessed part 6 Recessed part
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成５年９月６日[Submission date] September 6, 1993
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】図面[Document name to be corrected] Drawing
【補正対象項目名】全図[Correction target item name] All drawings
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図１】 [Figure 1]
【図２】 [Fig. 2]
【図３】 [Figure 3]
Claims (3)
周にスパイラル状もしくは網目状に突起して形成された
焼入硬化部と、前記焼入硬化部間に介在する軟質凹部
と、を有することを特徴とする耐焼付き性に優れた摺動
部材。1. A sliding member having a circular cross section, which has a quench-hardened portion formed on the outer periphery by projecting in a spiral shape or a mesh shape, and a soft concave portion interposed between the quench-hardened portions. A sliding member with excellent seizure resistance.
おいて、前記円形断面部材をその中心軸がレーザー光線
の光軸に対して垂直になるように回転装置に取付け一定
速度で回転すると共に中心軸方向に移動しつつレーザー
光線を該部材の外周部に照射する工程と、前記焼入硬化
した摺動部材を研磨する工程と、を有して成ることを特
徴とする耐焼付き性に優れた摺動部材の製造方法。2. A method for manufacturing a sliding member having a circular cross section, wherein the circular cross section member is attached to a rotating device such that its central axis is perpendicular to the optical axis of the laser beam, and the central axis is rotated at a constant speed. Sliding with excellent seizure resistance, which comprises a step of irradiating a laser beam on the outer peripheral portion of the member while moving in the direction, and a step of polishing the quench-hardened sliding member. A method of manufacturing a member.
おいて、前記円形断面部材をその中心軸がレーザー光線
の光軸に対して垂直になるように回転装置に取付け一定
速度で回転すると共に中心軸方向に移動しつつレーザー
光線を該部材の外周部に照射する第１工程と、前記円形
断面部材の回転および中心軸方向の移動を反対方向とし
て第１工程と同様にレーザー光線を照射する第２工程
と、前記焼入硬化した摺動部材を研磨する工程と、を有
して成ることを特徴とする耐焼付き性に優れた摺動部材
の製造方法。3. A method for manufacturing a sliding member having a circular cross section, wherein the circular cross section member is attached to a rotating device such that its central axis is perpendicular to the optical axis of the laser beam, and the central axis is rotated at a constant speed. A first step of irradiating a laser beam onto the outer peripheral portion of the member while moving in the direction, and a second step of irradiating the laser beam in the same manner as the first step with the rotation and movement of the circular cross-section member in the opposite direction as the opposite directions. And a step of polishing the quench-hardened sliding member, and a method of manufacturing a sliding member having excellent seizure resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32689991A JPH0681030A (en) | 1991-11-15 | 1991-11-15 | Sliding member excellent in seizure resistance and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32689991A JPH0681030A (en) | 1991-11-15 | 1991-11-15 | Sliding member excellent in seizure resistance and its production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0681030A true JPH0681030A (en) | 1994-03-22 |
Family
ID=18192995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32689991A Pending JPH0681030A (en) | 1991-11-15 | 1991-11-15 | Sliding member excellent in seizure resistance and its production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0681030A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1538353A1 (en) * | 2002-09-09 | 2005-06-08 | Hitachi Construction Machinery Co., Ltd. | Bearing device |
| US7713610B2 (en) * | 2004-09-03 | 2010-05-11 | Taiho Kogyo Co., Ltd. | Sliding member |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS552710A (en) * | 1978-06-19 | 1980-01-10 | Komatsu Ltd | Improving method for antiseizing property of parts |
| JPS62253713A (en) * | 1986-02-25 | 1987-11-05 | セジユデユ−ル・ソシエテ・ドウ・トランスフオルマシオン・ドウ・ラリユミニウム・ペシネ | Metal cast article having at least one region of abrasion resistant zone at least on one surface thereof |
-
1991
- 1991-11-15 JP JP32689991A patent/JPH0681030A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS552710A (en) * | 1978-06-19 | 1980-01-10 | Komatsu Ltd | Improving method for antiseizing property of parts |
| JPS62253713A (en) * | 1986-02-25 | 1987-11-05 | セジユデユ−ル・ソシエテ・ドウ・トランスフオルマシオン・ドウ・ラリユミニウム・ペシネ | Metal cast article having at least one region of abrasion resistant zone at least on one surface thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1538353A1 (en) * | 2002-09-09 | 2005-06-08 | Hitachi Construction Machinery Co., Ltd. | Bearing device |
| EP1538353A4 (en) * | 2002-09-09 | 2006-10-04 | Hitachi Construction Machinery | Bearing device |
| US7713610B2 (en) * | 2004-09-03 | 2010-05-11 | Taiho Kogyo Co., Ltd. | Sliding member |
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