GB722427A - Improvements in or relating to corrosion resistant steel springs and spring materialand methods for making same - Google Patents

Improvements in or relating to corrosion resistant steel springs and spring materialand methods for making same

Info

Publication number
GB722427A
GB722427A GB28634/51A GB2863451A GB722427A GB 722427 A GB722427 A GB 722427A GB 28634/51 A GB28634/51 A GB 28634/51A GB 2863451 A GB2863451 A GB 2863451A GB 722427 A GB722427 A GB 722427A
Authority
GB
United Kingdom
Prior art keywords
per cent
alloy
spring
remainder
forming elements
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
Application number
GB28634/51A
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.)
Sandvik AB
Original Assignee
Sandvik AB
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 Sandvik AB filed Critical Sandvik AB
Publication of GB722427A publication Critical patent/GB722427A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G04HOROLOGY
    • G04BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B1/00Driving mechanisms
    • G04B1/10Driving mechanisms with mainspring
    • G04B1/14Mainsprings; Bridles therefor
    • G04B1/145Composition and manufacture of the springs

Landscapes

  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Springs (AREA)

Abstract

Steel springs and spring material having good corrosion resistance and high elastic modulus and tensile strength are manufactured by quench-annealing an unstable austenitic alloy from 950-1200 DEG C., the alloy containing Fe as its principal constituent, 6-10 per cent of Ni, 12-20 per cent Cr, at least one of the ferrite-forming elements Si up to 2 per cent and Mo up to 3 per cent, there being present at least 0.8 per cent Si and/or at least 0.4 per cent Mo, cold working in a number of steps without intermediate annealing with a total cross-sectional reduction of at least 70 per cent and tempering the alloy at 350-550 DEG C. to achieve the spring properties, the proportion of austenite-forming elements to ferrite-forming elements being such as to effect substantially no transformation of austenite below 70 per cent reduction but a substantial transformation to a ferro-magnetic phase thereabove. The alloy may also contain C up to 0.3 per cent, Ti 0.4-30 per cent, one or more of Nb, Ta, V, W, Cu, Co up to 1.5 per cent each and Mn up to 3.0 per cent. The following ranges of alloys are referred to: C 0.07-0.25, Si 0.8-1.3, No 0.8-0.3, Mn 0.7-3.0, Cr 17.0-19.0, Ni 7.0-9.0, Fe remainder; C 0.1-0.2, Si 1.1-1.2, Mo 0.8-0.9, Mn 0.9-1.0, Cr 18.0-19.0, Ni 8.0-9.0, Fe remainder and C 0.1-0.2, Si 0.4-0.5, Mo 1.0-2.0, Mn 0.1-0.2, Cr 17.0-18.0, Ni 9.0-10.0, Fe remainder, all proportions being per cent by weight.
GB28634/51A 1950-12-12 1951-12-06 Improvements in or relating to corrosion resistant steel springs and spring materialand methods for making same Expired GB722427A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE722427X 1950-12-12

Publications (1)

Publication Number Publication Date
GB722427A true GB722427A (en) 1955-01-26

Family

ID=20316031

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28634/51A Expired GB722427A (en) 1950-12-12 1951-12-06 Improvements in or relating to corrosion resistant steel springs and spring materialand methods for making same

Country Status (1)

Country Link
GB (1) GB722427A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103529682A (en) * 2012-06-28 2014-01-22 尼瓦洛克斯-法尔股份有限公司 Mainspring for a clock piece

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103529682A (en) * 2012-06-28 2014-01-22 尼瓦洛克斯-法尔股份有限公司 Mainspring for a clock piece
CN109884870A (en) * 2012-06-28 2019-06-14 尼瓦洛克斯-法尔股份有限公司 Mainspring barrel for clock and watch

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