FR2322203A1 - Hardening of saw teeth - by selective heat treatment with control of base temp. - Google Patents
Hardening of saw teeth - by selective heat treatment with control of base temp.Info
- Publication number
- FR2322203A1 FR2322203A1 FR7526593A FR7526593A FR2322203A1 FR 2322203 A1 FR2322203 A1 FR 2322203A1 FR 7526593 A FR7526593 A FR 7526593A FR 7526593 A FR7526593 A FR 7526593A FR 2322203 A1 FR2322203 A1 FR 2322203A1
- Authority
- FR
- France
- Prior art keywords
- temp
- saw
- control
- heat treatment
- hardening
- 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.)
- Withdrawn
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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/24—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for saw blades
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
The saw is pretreated so that the main part of the saw tooth is held at a definite prescribed low temp. During or after the transfer of the tooth in an atmosphere at a definite low temp. the surface layer is heated. On completion of the heating period, the layer loses its heat to the main part of the saw at the low temp. The saw may be moved intermittently or continuously through the heat treatment equipment and temp. control methods may include the use of air or water. By control of the saw temp. the efficiency of the selective hardening process can be assured, independent of changes, e.g. seasonal, in the ambient temp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7526593A FR2322203A1 (en) | 1975-08-29 | 1975-08-29 | Hardening of saw teeth - by selective heat treatment with control of base temp. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7526593A FR2322203A1 (en) | 1975-08-29 | 1975-08-29 | Hardening of saw teeth - by selective heat treatment with control of base temp. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2322203A1 true FR2322203A1 (en) | 1977-03-25 |
Family
ID=9159447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7526593A Withdrawn FR2322203A1 (en) | 1975-08-29 | 1975-08-29 | Hardening of saw teeth - by selective heat treatment with control of base temp. |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2322203A1 (en) |
-
1975
- 1975-08-29 FR FR7526593A patent/FR2322203A1/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |