JPS6371508A - Manufacture of poppet valve - Google Patents
Manufacture of poppet valveInfo
- Publication number
- JPS6371508A JPS6371508A JP61215326A JP21532686A JPS6371508A JP S6371508 A JPS6371508 A JP S6371508A JP 61215326 A JP61215326 A JP 61215326A JP 21532686 A JP21532686 A JP 21532686A JP S6371508 A JPS6371508 A JP S6371508A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- laser beam
- resistance
- wear
- manufacture
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 238000007712 rapid solidification Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 230000003628 erosive effect Effects 0.000 abstract description 4
- 238000005299 abrasion Methods 0.000 abstract description 3
- 229910001220 stainless steel Inorganic materials 0.000 abstract 1
- 239000010935 stainless steel Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 description 8
- 239000010410 layer Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 239000006210 lotion Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 241000220317 Rosa Species 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910001105 martensitic stainless steel Inorganic materials 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Landscapes
- Lift Valve (AREA)
- Laser Beam Processing (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、内燃機関用吸、排気弁等に使用されるきのこ
状弁の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for manufacturing mushroom-shaped valves used in intake and exhaust valves for internal combustion engines.
従来の内燃機関用吸、排気弁は９図面に示すように、耐
熱鋼棒材等を使用してこれに熱処理を施こすことにより
、弁盤体３の座面４の部分、幹体２の周面部及び該幹体
の端面５の部分のそれぞれに硬化面を構成していた。As shown in Figure 9, conventional intake and exhaust valves for internal combustion engines are manufactured by using heat-resistant steel bars and the like and subjecting them to heat treatment. A hardened surface was formed on each of the peripheral surface portion and the end surface 5 portion of the trunk body.
しかしながら、かかる従来の弁においては。 However, in such conventional valves.
通常の熱処理によって硬化面を構成するため。To form a hardened surface through normal heat treatment.
製品毎に硬化層のバラツキを生ずる傾向がある。又裏作
工程が複雑であるとともに材料費が高騰するという問題
点もあった。There is a tendency for the cured layer to vary from product to product. There were also problems in that the back production process was complicated and the cost of materials rose.
本発明は上記に鑑みなされたもので、レーザービームを
照射し溶融急冷凝固効果を利用して、容易に表面硬化層
を形成することによυ、耐摩耗性の優れた均質な弁を提
供することを目的とする。The present invention has been made in view of the above, and provides a homogeneous valve with excellent wear resistance by easily forming a hardened surface layer by irradiating a laser beam and utilizing the melting and rapid solidification effect. The purpose is to
〔問題点を解決するための手段９作用〕本発明は、上記
問題点を解決するため、弁体の表面にレーザビームを照
射して溶融急冷凝固させるようにしたことを特徴とする
。[Means 9 for Solving the Problems] In order to solve the above problems, the present invention is characterized in that the surface of the valve body is irradiated with a laser beam to cause melting and rapid solidification.
かかる処理を行うことによシ生起する急冷凝固効果によ
り１組織の微細化無偏析化、あるいは過飽和固溶といっ
た材質の改善が図れるとともに、硬度が向上し耐摩耗性
及び耐工ローション性が向上する。Due to the rapid solidification effect caused by such treatment, it is possible to improve the material quality such as finer structure, non-segregation, or supersaturated solid solution, as well as improve hardness and improve wear resistance and lotion resistance. .
また、レーザービームは、エネルギー密度が非常に高い
ため、加熱による熱影響が少なく１表面から２〜３ｍｍ
８度の深さの凝固部ならば、熱による残留歪、変形等の
問題は殆んどない。In addition, since the laser beam has a very high energy density, there is little thermal effect due to heating, and it can be used within 2 to 3 mm from one surface.
If the solidified part has a depth of 8 degrees, there will be almost no problems such as residual strain or deformation due to heat.
以下図面を参照して本発明を内燃機関用吸。 The present invention will be described below with reference to the drawings.
排気弁の製造に適用した１実施例につき説明すると１図
において、ｌは弁、２は該弁１の幹体、３は弁盤体、４
は弁座（図示せず）と当接する座面１５は幹体２の端面
である。To explain one embodiment applied to the manufacture of an exhaust valve, in Fig. 1, l is a valve, 2 is a trunk body of the valve 1, 3 is a valve disk body, and 4 is a valve body.
A seat surface 15 that comes into contact with a valve seat (not shown) is an end surface of the trunk body 2.
本発明は、かかる構造を具えた弁工の表面にレーザビー
ムを照射することを特徴とするものであり、以下その施
行例につき説明する。The present invention is characterized in that a laser beam is irradiated onto the surface of a valve fitting having such a structure, and an example of its implementation will be described below.
〔施行例１〕
１３クロム・マルテンサイト系ステンレス鋼からなる弁
ｌの表面に、 ＣＯ２レーザ発振器を用い、レーザ出
力３ＫＷ、 レーザ送り速度３ ｍ、 ／ ｍｉｎの
条件でレーザビームを照射した結果１幅２．５ｍｍ、深
さ２ ｍｍの溶融凝固層が得られた。この溶融凝固層と
母地（レーザビームを照射してない部分）の硬さをミク
ロビッカースで測定したところ、母地のＨＶ値が１９０
〜２１０であるのに対し、溶融凝固層は５２０〜５８０
と約２倍以上の硬さの向上が得られた。同質材料であれ
ば硬さが高い程、耐摩耗性耐／ローション性はすぐれて
いるため、弁盤体３の座面４の部分、幹体２の周面部及
び該幹体２の端面５の部分にレーザビームを照射し溶融
急冷凝固させることにより、各部の耐摩耗性及び耐エロ
ージヨン性を容易に向上せしめることができる。[Example 1] The surface of a valve l made of 13 chromium martensitic stainless steel was irradiated with a laser beam using a CO2 laser oscillator under conditions of a laser output of 3 kW and a laser feed rate of 3 m/min, resulting in a width of 1. A molten solidified layer with a thickness of 2.5 mm and a depth of 2 mm was obtained. When the hardness of this molten solidified layer and the base material (the part not irradiated with the laser beam) was measured using a micro Vickers, the HV value of the base material was 190.
~210, whereas the melt solidified layer is 520~580
The hardness was improved by about twice as much. If the material is of the same type, the higher the hardness, the better the abrasion resistance/lotion resistance. By irradiating the parts with a laser beam to melt and rapidly solidify them, the wear resistance and erosion resistance of each part can be easily improved.
〔施工例２〕
１、７−４． Ｐ Ｈ鋼及び５ＵＨ３材からなる弁１に
ついても、上記〔施行例１〕と同様の条件でレーザビー
ムを照射した結果、レーザビーム照射部は母地と比較し
て３０％〜５０％の硬さ向上が認められた。[Construction Example 2] 1, 7-4. The valve 1 made of PH steel and 5UH3 material was also irradiated with a laser beam under the same conditions as in [Example 1] above, and as a result, the laser beam irradiated part was 30% to 50% harder than the base material. Improvement was observed.
本発明は以上のように構成されておシ３本発明方法によ
れば、弁盤体の座面の部分、幹体の周面部及び該幹体の
端面部分の少なくとも１表面にレーザビームを照射して
溶融急冷凝固させ硬化層を形成することにより、耐摩耗
性及び耐エロージヨン性の向上等の材質改善がなされる
。The present invention is constructed as described above, and according to the method of the present invention, a laser beam is irradiated onto at least one surface of the seat surface of the valve disc body, the peripheral surface of the trunk body, and the end face portion of the trunk body. By melting, rapidly solidifying, and forming a hardened layer, material properties such as wear resistance and erosion resistance are improved.
Ｊ＝１＝図面は本発明を実施した内燃機関用吸。
排気弁の外観図である。
１・・・弁、２・・・幹体、３・・・弁盤体、４・・・
座面。
５・・幹体の端面。J=1=The drawing shows a suction engine for an internal combustion engine embodying the present invention. It is an external view of an exhaust valve. 1... Valve, 2... Trunk body, 3... Valve disc body, 4...
seat. 5. End surface of the trunk.
Claims (1)
を具えたきのこ状弁を製造するにあたり、上記弁の表面
の全部または一部にレーザービームを照射して溶融急冷
凝固させることを特徴とするきのこ状弁の製造方法。In manufacturing a mushroom-shaped valve comprising a valve disk body with a seat surface for contact with the valve seat and a rod-shaped trunk body, all or part of the surface of the valve is irradiated with a laser beam and melted. A method for manufacturing a mushroom-shaped valve, characterized by rapid solidification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61215326A JPS6371508A (en) | 1986-09-12 | 1986-09-12 | Manufacture of poppet valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61215326A JPS6371508A (en) | 1986-09-12 | 1986-09-12 | Manufacture of poppet valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6371508A true JPS6371508A (en) | 1988-03-31 |
Family
ID=16670445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61215326A Pending JPS6371508A (en) | 1986-09-12 | 1986-09-12 | Manufacture of poppet valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6371508A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08121125A (en) * | 1994-10-21 | 1996-05-14 | Fuji Oozx Inc | Engine valve and its manufacture |
| CN100443597C (en) * | 2006-06-16 | 2008-12-17 | 中国科学院金属研究所 | Hardening technology for precipitation hardening stainless steel laser surface |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5313575A (en) * | 1971-07-01 | 1978-02-07 | Ri Keisawa | Fluorescent lamp |
| JPS56150183A (en) * | 1980-04-18 | 1981-11-20 | Hitachi Ltd | Method for hardening ti and ti alloy |
| JPS6127174A (en) * | 1984-07-17 | 1986-02-06 | Mitsubishi Heavy Ind Ltd | Method for hardening padding part of valve |
| JPS61110716A (en) * | 1984-11-01 | 1986-05-29 | Honda Motor Co Ltd | Heat treating and surface hardening method of internal combustion engine welding valve |
-
1986
- 1986-09-12 JP JP61215326A patent/JPS6371508A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5313575A (en) * | 1971-07-01 | 1978-02-07 | Ri Keisawa | Fluorescent lamp |
| JPS56150183A (en) * | 1980-04-18 | 1981-11-20 | Hitachi Ltd | Method for hardening ti and ti alloy |
| JPS6127174A (en) * | 1984-07-17 | 1986-02-06 | Mitsubishi Heavy Ind Ltd | Method for hardening padding part of valve |
| JPS61110716A (en) * | 1984-11-01 | 1986-05-29 | Honda Motor Co Ltd | Heat treating and surface hardening method of internal combustion engine welding valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08121125A (en) * | 1994-10-21 | 1996-05-14 | Fuji Oozx Inc | Engine valve and its manufacture |
| CN100443597C (en) * | 2006-06-16 | 2008-12-17 | 中国科学院金属研究所 | Hardening technology for precipitation hardening stainless steel laser surface |
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