GB1188509A - Wear Resistant Leaf Springs and method - Google Patents

Wear Resistant Leaf Springs and method

Info

Publication number
GB1188509A
GB1188509A GB32956/67A GB3295667A GB1188509A GB 1188509 A GB1188509 A GB 1188509A GB 32956/67 A GB32956/67 A GB 32956/67A GB 3295667 A GB3295667 A GB 3295667A GB 1188509 A GB1188509 A GB 1188509A
Authority
GB
United Kingdom
Prior art keywords
hardness
rockwell
july
depth
leaf springs
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
GB32956/67A
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.)
Boeing North American Inc
Original Assignee
North American Rockwell Corp
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
Priority claimed from US643558A external-priority patent/US3419260A/en
Application filed by North American Rockwell Corp filed Critical North American Rockwell Corp
Publication of GB1188509A publication Critical patent/GB1188509A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
    • F16F1/18—Leaf springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/88—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards
    • B21D53/886—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards leaf springs
    • 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
    • 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
    • C21D9/02—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2226/00—Manufacturing; Treatments
    • F16F2226/02—Surface treatments
    • 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

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Springs (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

1,188,509. Locally hardening springs. NORTH AMERICAN ROCKWELL CORP. July 18, 1967 [July 21, 1966; June 5, 1967], No.32956/67. Heading C7N. [Also in Division F2] . A leaf spring, as used in vehicle suspensions, has (see Division F2) surface hardened zones at its ends, where in use it slidingly engages support members. The surface hardening is achieved by induction heating using a coil 41 of the form shown in Fig. 2 and, by restriction of the heating time and/ or by quenching the other surface with a liquid jet 50, the hardened zone is restricted to a depth of 0À05 to 0À25 inches. Spring steel of 42 to 47 Rockwell C hardness may be given a surface hardness of 57 to 65 Rockwell C in this way. Fig. 5 (not shown) depicts the variation of hardness with depth in a typical treated spring.
GB32956/67A 1966-07-21 1967-07-18 Wear Resistant Leaf Springs and method Expired GB1188509A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US56696866A 1966-07-21 1966-07-21
US643558A US3419260A (en) 1967-06-05 1967-06-05 Wear resistant leaf spring

Publications (1)

Publication Number Publication Date
GB1188509A true GB1188509A (en) 1970-04-15

Family

ID=27074320

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32956/67A Expired GB1188509A (en) 1966-07-21 1967-07-18 Wear Resistant Leaf Springs and method

Country Status (1)

Country Link
GB (1) GB1188509A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4431466A (en) * 1981-03-16 1984-02-14 Melampy Donald F Method for making armor plate
US9573432B2 (en) 2013-10-01 2017-02-21 Hendrickson Usa, L.L.C. Leaf spring and method of manufacture thereof having sections with different levels of through hardness

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4431466A (en) * 1981-03-16 1984-02-14 Melampy Donald F Method for making armor plate
US9573432B2 (en) 2013-10-01 2017-02-21 Hendrickson Usa, L.L.C. Leaf spring and method of manufacture thereof having sections with different levels of through hardness
US9890440B2 (en) 2013-10-01 2018-02-13 Hendrickson Usa, L.L.C. Leaf spring and method of manufacture thereof having sections with different levels of through hardness

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees