US3464815A - Non-magnetic iron-nickel-chromium-molybdenum alloy,and watch springs obtained with this alloy - Google Patents

Non-magnetic iron-nickel-chromium-molybdenum alloy,and watch springs obtained with this alloy Download PDF

Info

Publication number
US3464815A
US3464815A US647956A US3464815DA US3464815A US 3464815 A US3464815 A US 3464815A US 647956 A US647956 A US 647956A US 3464815D A US3464815D A US 3464815DA US 3464815 A US3464815 A US 3464815A
Authority
US
United States
Prior art keywords
alloy
nickel
chromium
molybdenum
magnetic iron
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.)
Expired - Lifetime
Application number
US647956A
Other languages
English (en)
Inventor
Xavier Wache
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Imphy SA
Societe Metallurgique dImphy SA
Original Assignee
Societe Metallurgique dImphy SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Societe Metallurgique dImphy SA filed Critical Societe Metallurgique dImphy SA
Application granted granted Critical
Publication of US3464815A publication Critical patent/US3464815A/en
Assigned to IMPHY S.A., A SOCIETE ANONYME OF FRANCE reassignment IMPHY S.A., A SOCIETE ANONYME OF FRANCE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: CREUSOT-LOIRE
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/20—Compensation of mechanisms for stabilising frequency
    • G04B17/22—Compensation of mechanisms for stabilising frequency for the effect of variations of temperature
    • G04B17/227—Compensation of mechanisms for stabilising frequency for the effect of variations of temperature composition and manufacture of the material used
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B43/00—Protecting clockworks by shields or other means against external influences, e.g. magnetic fields
    • G04B43/007—Antimagnetic alloys

Definitions

  • the heat coefiicient is a basic parameter characterizing the sensitivity of the spring to variations in ambient temperature.
  • the other three parameters will not be described here, since they are not directly concerned with the invention.
  • the heat coeflicient is dependent on the thermoelastic coefficient of the alloys used for the manufacture of the spring.
  • the thermoelastic coefficient indicates the effect of temperature variations on the modulus of elasticity of the alloys.
  • One of the aims in the manufacture of a watch spring is to obtain a zero heat coeflicient. This can be done by using an alloy having a zero thermoelastic coefficient under the operating conditions of the spring.
  • Fe Remainder Durinval alloys are distinguished from Elinvar alloys in particular by their hardening mechanism.
  • the mechanical characteristics of Elinvar are produced by appropriate heat treatment during which chromium carbides are precipitated, while titanium nickelides and aluminium nickelides are precipitated in the case of Durinval. This essential diiference in the hardening mechanisms of the two types of alloy is, of course, directly connected with differences in composition, which a comparison of the above two analyses will reveal.
  • Durinval alloys like Elinvar alloys, have, of course, a substantially zero thermoelastic coefficient in the region of ambient temperature.
  • This invention relates to a new group of alloys that have the usual features of conventional Durinval alloys, but are non-magnetic at ambient temperature.
  • the invention relates to a non-magnetic alloy characterized in that it is composed of the following, by weight: 36.5 to 39.5% of nickel, 1.5 to 4.5% of chromium, 1.5 to 3% of molybdenum, 0.75 to 1.25% of aluminium and 2.3% of titanium, together with very small quantities of carbon, silicon, manganese, sulphur and phosphorus, the remainder being iron.
  • the invention also relates to watch springs made of this alloy.
  • composition by weight of an alloy according to the invention may be given as an example: carbon 0.005%, silicon 0.34%, manganese 0.16%, nickel 38.4%, chromium 3.37%, molybdenum 2%, titanium 2.46%, aluminium 0.96% and iron 52.29%, the remainder being sulphur and phosphorus.
  • the Curie point of this alloy is below 18 and it is practically non-magnetic at ambient temperature, having a zero thermoelastic coefficient.
  • Non-magnetic iron-nickel-chromiummolybdenum alloy characterized in that it is composed, by Weight, of 36.5 to 39.5% of nickel, 1.5 to 4.5% of chromium, 1.5 to 3% of molybdenum, 0.75 to 1.25% of aluminium and 2 to 3% of titanium, the remainder being iron, to gether with very small quantities of carbon, silicon, manganese, sulphur and phosphorus.
  • a non-magnetic alloy as claimed in claim 1 characterized in that it is composed by Weight of 38.4% of nickel, 3.37% of chromium, 2% of molybdenum, 0.96%
  • Watch springs characterized in that they are made of a non-magnetic iron-nickel-chromii1m-molybdenum alloy, composed, by weight, of 36.5 to 39.5% of nickel, 1.5 to 4.5% of chromium, 1.5 to 3% of molybdenum, 0.75 to 1.25% of aluminium and 2 to 3% of titanium, the remainder being iron, together with very small quantities of carbon, silicon, manganese, sulphur and phosphorus.

Landscapes

  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Soft Magnetic Materials (AREA)
  • Heat Treatment Of Steel (AREA)
US647956A 1966-07-12 1967-06-22 Non-magnetic iron-nickel-chromium-molybdenum alloy,and watch springs obtained with this alloy Expired - Lifetime US3464815A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR69163A FR1493033A (fr) 1966-07-12 1966-07-12 Alliages fer-nickel-chrome-molybdène amagnétiques et spiraux de montre obtenus avecces alliages

Publications (1)

Publication Number Publication Date
US3464815A true US3464815A (en) 1969-09-02

Family

ID=8613095

Family Applications (1)

Application Number Title Priority Date Filing Date
US647956A Expired - Lifetime US3464815A (en) 1966-07-12 1967-06-22 Non-magnetic iron-nickel-chromium-molybdenum alloy,and watch springs obtained with this alloy

Country Status (5)

Country Link
US (1) US3464815A (fr)
CH (2) CH865767A4 (fr)
DE (1) DE1558642B2 (fr)
FR (1) FR1493033A (fr)
GB (1) GB1156574A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4911884A (en) * 1989-01-30 1990-03-27 General Electric Company High strength non-magnetic alloy
US20070001139A1 (en) * 2005-06-30 2007-01-04 Walter Fleischer Electrically actuatable valve
US20140003203A1 (en) * 2012-06-28 2014-01-02 Nivarox-Far S.A. Mainspring for a timepiece
JP2017102110A (ja) * 2015-12-02 2017-06-08 ニヴァロックス−ファー ソシエテ アノニム 計時器用バランスばねを製造する方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3065068A (en) * 1962-03-01 1962-11-20 Allegheny Ludlum Steel Austenitic alloy
US3243287A (en) * 1962-09-14 1966-03-29 Crucible Steel Co America Hot strength iron base alloys
US3300347A (en) * 1964-05-07 1967-01-24 Huck Mfg Co Fastening device and method of making same

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH217814A (fr) * 1937-06-02 1941-11-15 Soc D Fabriques De Spiraux Reu Procédé pour la fabrication de spiraux compensateurs pour montres, chronomètres, etc.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3065068A (en) * 1962-03-01 1962-11-20 Allegheny Ludlum Steel Austenitic alloy
US3243287A (en) * 1962-09-14 1966-03-29 Crucible Steel Co America Hot strength iron base alloys
US3300347A (en) * 1964-05-07 1967-01-24 Huck Mfg Co Fastening device and method of making same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4911884A (en) * 1989-01-30 1990-03-27 General Electric Company High strength non-magnetic alloy
US20070001139A1 (en) * 2005-06-30 2007-01-04 Walter Fleischer Electrically actuatable valve
US20140003203A1 (en) * 2012-06-28 2014-01-02 Nivarox-Far S.A. Mainspring for a timepiece
JP2017102110A (ja) * 2015-12-02 2017-06-08 ニヴァロックス−ファー ソシエテ アノニム 計時器用バランスばねを製造する方法

Also Published As

Publication number Publication date
DE1558642A1 (fr) 1971-05-06
GB1156574A (en) 1969-07-02
FR1493033A (fr) 1967-08-25
CH501954A (fr) 1970-09-30
DE1558642B2 (de) 1971-05-06
CH865767A4 (fr) 1970-09-30

Similar Documents

Publication Publication Date Title
US3251683A (en) Martensitic steel
US3464815A (en) Non-magnetic iron-nickel-chromium-molybdenum alloy,and watch springs obtained with this alloy
US2747989A (en) Ferritic alloys
CN109321784B (zh) 含钐的软磁合金
US2201425A (en) Alloy steel
US2266482A (en) Age hardenable, nickel-iron-chromium-titanium alloy possessing controlled thermoelastic properties
US3788822A (en) Non-magnetic composite having a constant modulus of elasticity
Fukamichi et al. Antiferromagnetic Characteristics of Cr–Sn and Cr–Fe Alloys, and Nonferromagnetic Cr–Fe–Sn Invar Alloys
US2978319A (en) High strength, low alloy steels
US3516823A (en) Nonmagnetic ferronickel-chromium alloys of low thermoelastic coefficient
US1939085A (en) Bimetal thermostat
US3585009A (en) Case for watches
US2745738A (en) Steel alloy blanks for glass-to-metal seal
JPS6396234A (ja) 形状記憶合金材料
US3117862A (en) Alloys for electromechanical devices and precision instruments
US2466285A (en) Nickel-iron alloys adapted for springs in thermocompensated oscillating systems
US2835571A (en) Steel for use at elevated temperature
KR20170064997A (ko) 타임피스 밸런스 스프링의 제조 방법
US3045335A (en) Rustless and refractory bimetallic strip for high temperatures
US2786756A (en) Titanium alloys
US2146231A (en) Alloy
US1671491A (en) Bimetallic element
US2475642A (en) Mechanical element which is to be subjected to high temperatures
US2404248A (en) Heat-resistant alloy
GB869753A (en) Improvements in nickel alloys

Legal Events

Date Code Title Description
AS Assignment

Owner name: IMPHY S.A., 8, RUE DE LA ROCHEFOUCAULD, 75009 , FR

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:CREUSOT-LOIRE;REEL/FRAME:003961/0485

Effective date: 19820318