JPS6137916A - Heat treatment - Google Patents
Heat treatmentInfo
- Publication number
- JPS6137916A JPS6137916A JP15765384A JP15765384A JPS6137916A JP S6137916 A JPS6137916 A JP S6137916A JP 15765384 A JP15765384 A JP 15765384A JP 15765384 A JP15765384 A JP 15765384A JP S6137916 A JPS6137916 A JP S6137916A
- Authority
- JP
- Japan
- Prior art keywords
- cam
- parts
- scanning
- heat treated
- heat treatment
- 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
【発明の詳細な説明】
〔発明の技術分野〕
この発明は電子ビーム、レーザビーム等の高エネルギ密
度のビームを用いて、金属その他の材料の表面を熱処理
する方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a method of heat treating the surface of metal or other materials using a high energy density beam such as an electron beam or a laser beam.
高エネルギ密度ビームを用いて、例えば軸状の被加熱処
理物の表面を全周に亘ってビーム走査させて加熱する場
合、そのビーム走査帯の走査開始点と走査終了点とが重
なるような加熱方法をとると、材質が鋳鉄などの場合は
、その重なった部分に割れを生ずることがある。またこ
れを避けるため前記走査開始点と走査終了点とが重なら
ないように加熱を行なうと、その中間部分が熱処理され
ガいま\残る恐れがある。第2図は従来の方法によって
熱処理を行った例を示すもので、カム軸(1)のカムの
部分(2)にビームが照射され、カム(2)の表面に熱
処理部分(3)が形成されるが、同時に未熱処理部分(
4)が残ることも明らかにしている。第2図のA−A部
分断面図である第6図はさらに明瞭にこの事実を示して
いる。この未熱処理部(4)は、前述のようにビーム走
査に際し、その走査開始点(3a)と終了点(3b)と
が重力ら力いように加熱するため発生するもので、カム
の軸線方向に、ある幅をもって1・1蓋ツ・状に集中し
て生じている。この未熱処理部分(4)t:jカム表面
のウィークポイントと力るもので、例えばカムの(4)
の部分のみが早く摩耗するなどの欠点を有していた。When using a high energy density beam to heat the surface of a shaft-shaped object to be heated by scanning the beam over the entire circumference, heating is performed such that the scanning start point and scanning end point of the beam scanning band overlap. If this method is used, if the material is cast iron, cracks may occur in the overlapping parts. In order to avoid this, if heating is performed so that the scan start point and scan end point do not overlap, there is a risk that the intermediate portion will be heat-treated and remain. Figure 2 shows an example of heat treatment performed using the conventional method, in which a beam is irradiated onto the cam portion (2) of the cam shaft (1), and a heat treated portion (3) is formed on the surface of the cam (2). However, at the same time, the unheated part (
It is also clear that 4) remains. FIG. 6, which is a partial sectional view taken along the line A--A in FIG. 2, shows this fact even more clearly. This unheated part (4) is generated because the scanning start point (3a) and end point (3b) are heated in the axial direction of the cam as described above during beam scanning so that the scanning start point (3a) and end point (3b) are subjected to gravity. They occur concentrated in a 1.1 lid shape with a certain width. This unheated part (4) t:j is a weak point on the cam surface, for example, (4) of the cam.
It had the disadvantage that only the parts wore out quickly.
本発明は、か\る従来方法の欠点を改善するためになさ
れたもので、従来例えばカムの被熱処理部分について1
大のビーム走査帯で一周だけでビーム走査による加熱を
完了していたのを改めて、該被熱処理部分に対し、複数
のビーム走査帯に分けてビーム走査を行ない、そのそれ
ぞれの走査帯の走査の開始点と終了点とか、同一軸線上
に位置しないように相互にずらせることによって、熱処
理されてい々い部分(4)が軸方向同一線上に並ぶこと
を妨げ、以てカム上のウィークポイントの集:申を防ぐ
ような熱処理方法を提供しようとするものである。The present invention was made in order to improve the drawbacks of the conventional method.
Instead of completing heating by beam scanning in just one round of a large beam scanning band, the beam scanning is performed on the part to be heat treated by dividing it into multiple beam scanning bands, and the scanning of each scanning band is repeated. By shifting the start point and end point so that they are not located on the same axis, the heat-treated first part (4) is prevented from being aligned on the same axis in the axial direction, thereby reducing weak points on the cam. Summary: This is an attempt to provide a heat treatment method that prevents this.
第1図は本発明の一実施例である。図中(1)、 (2
+、(4)は従来方法と同一である。(5)、f6)は
ビーム照射により加熱形成された熱処理部分、(7)は
集光レンズ、(8)ll−を反射鏡、(9)はレーザビ
ームである。FIG. 1 shows an embodiment of the present invention. In the figure (1), (2
+, (4) are the same as the conventional method. (5) and f6) are heat-treated parts heated and formed by beam irradiation, (7) is a condenser lens, (8) is a reflecting mirror, and (9) is a laser beam.
レーザビーム(9)は反射鏡(8)、集光レンズ(力を
経て、排熱処理物のカム軸(1)のカム(2)の表面に
照射されるが、従来1本であったビーム走査帯を2本に
分けて照射する。(5L(6)Fiそのビーム照射帯す
なわち熱処理部分であるが、ビーム照射の際に、加熱開
始点(5a)、 (6a)および終了点(5b)、 (
6b)を、図のように位置をずらせることにより、中間
部分(4)が軸方向同一線上に並ばガいことと力ね、カ
ム上に未熱処理部分が集中するのを防止できることと力
る。The laser beam (9) is irradiated onto the surface of the cam (2) of the cam shaft (1) of the waste heat treated material after passing through the reflecting mirror (8) and the condensing lens (force). The band is divided into two and irradiated.(5L(6)Fi The beam irradiation band, that is, the heat treatment part, is the heating start point (5a), (6a) and end point (5b), (
By shifting the positions of 6b) as shown in the figure, it is possible to ensure that the intermediate portions (4) are lined up on the same line in the axial direction, and to prevent the unheated portions from concentrating on the cam. .
なお上記の例はビーム走査帯は2木であるが、6本以上
にしてもよい。In the above example, there are two beam scanning bands, but the number may be six or more.
以上述べたように、カムの熱処理に際し、ビーム走査帯
を複数本に分けて照射し、その走査開始意表らびに終了
点を相互にずらせることにより、未熟処理部分が軸方向
に並んで集中的に存在することを防止したので、ウィー
クポイントが散在することと彦りカム全面に亘って摩耗
が均一化する勝れた効果を得られた。As mentioned above, when heat-treating a cam, by dividing the beam scanning band into multiple irradiation bands and shifting the scanning start and end points from each other, the unprocessed parts are lined up in the axial direction and concentrated. Since weak points are prevented from being present in the cam, excellent effects can be obtained in that weak points are scattered and wear is made uniform over the entire surface of the reversing cam.
第1図は本発明に係る熱処理作業の説明図、第2図は従
来方法によって熱処理されたカム軸の斜視図、第6図は
その断面図。
図中(4)は未熱処理部分、(5) 、 (6)はビー
ム走査帯す力わち熱処理部分、(力は集光レンズ、(8
)は反射鏡、(9)はレーザビーム。
なお各図中同一符号は同一または相描部分を示すものと
する。
代理人 弁理士 木 村 三 朗
第2図
笛 2 l萌
−Qへ−
ルa凶FIG. 1 is an explanatory diagram of the heat treatment process according to the present invention, FIG. 2 is a perspective view of a camshaft heat treated by a conventional method, and FIG. 6 is a sectional view thereof. In the figure, (4) is the unheated part, (5) and (6) are the beam scanning force, that is, the heat treated part, (the force is the condenser lens, and (8)
) is a reflecting mirror, and (9) is a laser beam. Note that the same reference numerals in each figure indicate the same or contrasting parts. Agent Patent Attorney Sanro Kimura 2nd Figure Flute 2 L Moe - To Q - Le A Kyo
Claims (1)
用いて、軸状あるいは円筒状の被加熱材を加熱あるいは
表面溶融によって熱処理を行なう装置において、前記被
加熱材の加熱対象面に2本あるいはそれ以上のビーム走
査帯をもち、かつそれらのビーム走査帯の走査開始点お
よび終了点を同一軸線上に並ばしめないようにビーム走
査を行なうことを特徴とする熱処理方法。In an apparatus that performs heat treatment on a shaft-like or cylindrical material to be heated by heating or surface melting using a high-energy density beam such as a laser beam or an electron beam, two or more beams are installed on the surface of the material to be heated. 1. A heat treatment method comprising: a beam scanning band, and scanning the beam so that the scanning start and end points of the beam scanning bands are not aligned on the same axis.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15765384A JPS6137916A (en) | 1984-07-30 | 1984-07-30 | Heat treatment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15765384A JPS6137916A (en) | 1984-07-30 | 1984-07-30 | Heat treatment |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6137916A true JPS6137916A (en) | 1986-02-22 |
Family
ID=15654425
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15765384A Pending JPS6137916A (en) | 1984-07-30 | 1984-07-30 | Heat treatment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6137916A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0293896A2 (en) * | 1987-06-04 | 1988-12-07 | Ford-Werke Aktiengesellschaft | Brake disc, especially for disc brakes of motor vehicles |
-
1984
- 1984-07-30 JP JP15765384A patent/JPS6137916A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0293896A2 (en) * | 1987-06-04 | 1988-12-07 | Ford-Werke Aktiengesellschaft | Brake disc, especially for disc brakes of motor vehicles |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4250374A (en) | Process and apparatus for the surface heat treatment of steel products by a laser beam | |
EP0140663A1 (en) | Optical scanning system for laser treatment of electrical steel and the like | |
JPS6163389A (en) | Treater for metallic work by power laser | |
JPH06500151A (en) | How to harden corrugated rolls | |
JPS6137916A (en) | Heat treatment | |
JP3894306B2 (en) | Laser quenching method and apparatus | |
JPH01143784A (en) | Dissimilar axis multi-focal point type laser beam converging device | |
JP2666288B2 (en) | Heat treatment method using multi-mode laser beam | |
JPS5651528A (en) | Method of improving iron loss value of magnetic steel sheet and its device | |
EP0060257A1 (en) | Method for surface hardening cams. | |
JPH06316722A (en) | Laser beam quenching device to surface of cylinder | |
JPH07252521A (en) | Quenching method by laser beam | |
JP3826310B2 (en) | Laser hardening method | |
SU1108080A1 (en) | Method of thermal polishing of glassware | |
JPS63105918A (en) | Oscillating method by laser beam | |
JPS5980728A (en) | Heat treatment of thin sheet | |
JPS6350404B2 (en) | ||
RU2082774C1 (en) | Crankshaft thermal treatment method | |
JPH07179933A (en) | Laser beam quenching method | |
JPH03188212A (en) | Laser beam heat treatment method | |
JPS6034611B2 (en) | Gear heat treatment method | |
JPS63118015A (en) | Method for hardening shaft with laser light | |
JPH05287362A (en) | Heat treatment method of circuilar surface | |
JPS60236483A (en) | Laser heater | |
JPS6223054B2 (en) |