JPS5589421A - Measuring method of hardened depth of laser heat treated article - Google Patents
Measuring method of hardened depth of laser heat treated articleInfo
- Publication number
- JPS5589421A JPS5589421A JP15919178A JP15919178A JPS5589421A JP S5589421 A JPS5589421 A JP S5589421A JP 15919178 A JP15919178 A JP 15919178A JP 15919178 A JP15919178 A JP 15919178A JP S5589421 A JPS5589421 A JP S5589421A
- Authority
- JP
- Japan
- Prior art keywords
- hardened
- depth
- laser
- heat treated
- width
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/55—Hardenability tests, e.g. end-quench tests
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
PURPOSE:To measure hardened depth simply without breaking a laser heat treated article by a method wherein, in case of measuring hardened depth of a laser heat treated article by using a beam out of a focus position, hardened depth is measured from hardened width calculated from etching hardened pattern of a surface there of. CONSTITUTION:The parallel laser beam a is focused by using a lens with a certain focal distance and a laser beam is irradiated at a position shifted from a focal point c at a predetermined amount. The relation of a hardened width CW of hardened pattern quenched by laser at various beam moving speeds and a hardened depth CD is designated at a line figure A(S43C) and B(FC25). In S43C, CD=0.42CW- 0.75, but 2<=CW<=6, and in FC25, CD=0.33CW-0.48, but 2<=CW<=6, therefore, after laser quenching, a surface hardened width CW is measured from hardened pattern by etching and a hardened depth CD is measured from the value of a hardened width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15919178A JPS5589421A (en) | 1978-12-26 | 1978-12-26 | Measuring method of hardened depth of laser heat treated article |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15919178A JPS5589421A (en) | 1978-12-26 | 1978-12-26 | Measuring method of hardened depth of laser heat treated article |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5589421A true JPS5589421A (en) | 1980-07-07 |
Family
ID=15688292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15919178A Pending JPS5589421A (en) | 1978-12-26 | 1978-12-26 | Measuring method of hardened depth of laser heat treated article |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5589421A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114740489A (en) * | 2022-04-13 | 2022-07-12 | 江苏联宸激光科技有限公司 | Surface measuring equipment for measuring laser quenched surface |
-
1978
- 1978-12-26 JP JP15919178A patent/JPS5589421A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114740489A (en) * | 2022-04-13 | 2022-07-12 | 江苏联宸激光科技有限公司 | Surface measuring equipment for measuring laser quenched surface |
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