JPS644808U - - Google Patents
Info
- Publication number
- JPS644808U JPS644808U JP9743087U JP9743087U JPS644808U JP S644808 U JPS644808 U JP S644808U JP 9743087 U JP9743087 U JP 9743087U JP 9743087 U JP9743087 U JP 9743087U JP S644808 U JPS644808 U JP S644808U
- Authority
- JP
- Japan
- Prior art keywords
- camshaft
- cam
- section
- remelted
- pearlite
- 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
- 229910001562 pearlite Inorganic materials 0.000 claims description 2
- 230000013011 mating Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000001000 micrograph Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Heat Treatment Of Articles (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Gears, Cams (AREA)
Description
第１図ａ，ｂはこの考案の一実施例によるカム
シヤフトを示す各々全体斜視説明図およびカムノ
ーズ部の拡大説明図、第２図および第３図は第１
図のカムシヤフトを製造する要領を示す各々アー
ク加熱時およびガス冷却時の概略説明図、第４図
はＴＩＧアーク加熱用トーチの移動軌跡を示す部
分説明図、第５図は再溶融後のカムノーズ部にお
けるカム組織を示す説明図、第６図は比較のため
に製作したカムシヤフトの耐久試験後のカム断面
の金属組織を示す顕微鏡写真、第７図はこの考案
の実施例において製作したカムシヤフトの耐久試
験後のカム断面の金属組織を示す顕微鏡写真であ
る。
１……カムシヤフト、２……シヤフト、３……
カム、５……摺動表面、６……粗大焼戻しパーラ
イト、７……再溶融チル組織をもつ硬化層、８…
…再溶融部、９……赤熱部、１７……冷却ガス、
１８……アーク。
1A and 1B are perspective explanatory views of the entire camshaft and enlarged explanatory views of the cam nose portion, respectively, showing a camshaft according to an embodiment of the invention, and FIGS.
A schematic explanatory diagram showing the procedure for manufacturing the camshaft shown in the figure during arc heating and gas cooling, respectively. Figure 4 is a partial explanatory diagram showing the movement trajectory of the TIG arc heating torch. Figure 5 is the cam nose section after remelting. Fig. 6 is a micrograph showing the metallographic structure of a cam cross section after a durability test of a camshaft manufactured for comparison, and Fig. 7 is a durability test of a camshaft manufactured in an example of this invention. It is a micrograph showing the metal structure of a later cam cross section. 1...camshaft, 2...shaft, 3...
Cam, 5...Sliding surface, 6...Coarse tempered pearlite, 7...Hardened layer with remelted chilled structure, 8...
...Remelting section, 9... Red-hot section, 17... Cooling gas,
18... Ark.
Claims (1)
て、前記カムの相手材との摺動表面に、当該表面
およびその直下０．１mm深さまでの部分に粗大焼
戻しパーライトのない再溶融チル組織をもつ硬化
層を有することを特徴とするカムシヤフト。 In a camshaft in which the shaft is equipped with a cam, the sliding surface of the cam with the mating material has a hardened layer having a remelted chilled structure without coarse tempered pearlite on the surface and a portion up to a depth of 0.1 mm immediately below the surface. A camshaft featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9743087U JPS644808U (en) | 1987-06-26 | 1987-06-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9743087U JPS644808U (en) | 1987-06-26 | 1987-06-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS644808U true JPS644808U (en) | 1989-01-12 |
Family
ID=31322895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9743087U Pending JPS644808U (en) | 1987-06-26 | 1987-06-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS644808U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03125009U (en) * | 1990-03-30 | 1991-12-18 |
-
1987
- 1987-06-26 JP JP9743087U patent/JPS644808U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03125009U (en) * | 1990-03-30 | 1991-12-18 |
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