FR2018372A1 - Improving steel fatigue resistance at borders of hard- - ened zone - Google Patents
Improving steel fatigue resistance at borders of hard- - ened zoneInfo
- Publication number
- FR2018372A1 FR2018372A1 FR6931838A FR6931838A FR2018372A1 FR 2018372 A1 FR2018372 A1 FR 2018372A1 FR 6931838 A FR6931838 A FR 6931838A FR 6931838 A FR6931838 A FR 6931838A FR 2018372 A1 FR2018372 A1 FR 2018372A1
- Authority
- FR
- France
- Prior art keywords
- fatigue resistance
- borders
- ened
- zone
- hard
- 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- Withdrawn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
- C21D7/00—Modifying the physical properties of iron or steel by deformation
- C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
- C21D7/04—Modifying the physical properties of iron or steel by deformation by cold working of the surface
-
- 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
- C21D1/06—Surface hardening
- C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
- C21D1/10—Surface hardening by direct application of electrical or wave energy; by particle radiation by electric induction
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Heat Treatment Of Articles (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
Surfaces of hardened zone borders are given a local case-hardening under pressure. Preferably, using induction or flame hardening. Steel is cold-worked under pressure by steel sandblasting or roller smoothing. Steel material is straight or curved axle shaft for railway wagon axle, armature shaft, roller or crankshaft. Advantage: prevents reduction of fatigue resistance by residual surface strain at edges of hardened region.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6774368 | 1968-09-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2018372A1 true FR2018372A1 (en) | 1970-05-29 |
Family
ID=13353715
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR6931838A Withdrawn FR2018372A1 (en) | 1968-09-18 | 1969-09-18 | Improving steel fatigue resistance at borders of hard- - ened zone |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE1947273B2 (en) |
FR (1) | FR2018372A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018006887A1 (en) | 2016-07-07 | 2018-01-11 | Bonatrans Group A.S. | Axle for rail vehicles |
-
1969
- 1969-09-18 DE DE19691947273 patent/DE1947273B2/en active Pending
- 1969-09-18 FR FR6931838A patent/FR2018372A1/en not_active Withdrawn
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018006887A1 (en) | 2016-07-07 | 2018-01-11 | Bonatrans Group A.S. | Axle for rail vehicles |
Also Published As
Publication number | Publication date |
---|---|
DE1947273B2 (en) | 1971-09-30 |
DE1947273A1 (en) | 1970-04-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |