US3558367A - Wheel cooling - Google Patents

Wheel cooling Download PDF

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Publication number
US3558367A
US3558367A US676274A US3558367DA US3558367A US 3558367 A US3558367 A US 3558367A US 676274 A US676274 A US 676274A US 3558367D A US3558367D A US 3558367DA US 3558367 A US3558367 A US 3558367A
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US
United States
Prior art keywords
wheel
hub
cooling
hubs
wheels
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
US676274A
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English (en)
Inventor
Bernard John Eck
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.)
Amsted Industries Inc
Original Assignee
Amsted Industries Inc
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 Amsted Industries Inc filed Critical Amsted Industries Inc
Application granted granted Critical
Publication of US3558367A publication Critical patent/US3558367A/en
Assigned to FIRST NATIONAL BANK OF CHICAGO, THE reassignment FIRST NATIONAL BANK OF CHICAGO, THE SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: AMSTED INDUSTRIES INCORPORATED
Anticipated expiration legal-status Critical
Assigned to AMSTED INDUSTRIES INCORPORATED, A CORP. OF DE. reassignment AMSTED INDUSTRIES INCORPORATED, A CORP. OF DE. RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: FIRST NATIONAL BANK OF CHICAGO, AS AGENT
Expired - Lifetime legal-status Critical Current

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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
    • C21D9/34—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tyres; for rims
    • 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

Definitions

  • the hub and tread are at approxiamtely the same hardness. If, for example, the rate of air cooling is such as to produce a tread with good wear qualities, the hub is difficult to machine. If, on the other hand, the rate of air cooling is such as to produce a machinable hub, the tread is too soft to provide wear qualities.
  • a cast steel railway car Wheel is produced which has a tread sufliciently hard so as to have good wear properties while the hub is soft enough to be easily machined.
  • the wheel 10 has a central relatively thick hub 12 and a relatively thick tread 14 interconnected by a relatively thin plate 16.
  • the wheel is illustrated at that portion of the manufacturing cycle wherein an axle hole 17 has been torch cut and the wheel is being transported on a conveyor indicated schematically at 18.
  • the wheels are moved from the mold and cooled to a temperature in the range of ll00 F. to 1200 F., after which an axle hole is torch cut through the wheel hub.
  • the wheel is then heated in a normalizing furance to a temperature of approximately 1700 F.
  • insulating disk 20 which is positioned on slat conveyor 18.
  • the insulating disk is preferably of refractory fiber glass construction but may be any ceramic insulating material which will withstand temperatures of up to 1700 F., or a fibrous insulating material such as asbestos.
  • a second insulating disk 22 is placed on the upper face of the wheel hub.
  • the individual disks 20 and 22 may be supported by metallic plates 2.4 though this is not essential.
  • the wheels are permitted to cool in air, with the wheel treads completely exposed but with the wheel hubs insulated so that the loss of heat from the hubs is retarded. Cooling in this manner is continued until the hub temperature is below the transformation temperature of the steel of which the wheel is cast. This transformation temperature will generally be approximately 1230 F. and, in practice, the wheels are cooled to a temperature within the range of approximately 0 F. to 1200 F.
  • the foregoing method results in wheels having a preferred tread hardness in the range of approximately 265-300 B.H.N., and the hub hardness less than about 340 B.H.N.
  • An alternate method is to provide a conveyor having a continuous strip of insulating material suspended thereabove and having a width approximately equal to the hub diameter.
  • the wheels are then slowly carried on the conveyor so that the hubs are always positioned immediately below the strip of insulating material.
  • the wheel hubs are once again cooled at a slower rate than the wheel rims and the desired hardness characteristics are obtained.
  • heating means in the form of a heating element, an induction coil or gas flames may be utilized in the strip to aid in retarding loss of heat from the Wheel hubs.
  • a method of making a steel railway wheel comprising the steps of forming steel while molten to the shape of a wheel, then cooling the wheel to a temperature value within the range of about 1200 F. to room temperature, then heating the wheel in a furnace to a normalizing temperature of about 1700" F., and as the wheel emerges from the furance placing a non-metallic insulating disk upon each face of the wheel hub, then cooling the wheel in air until the hub portion has cooled to a temperature of at least about 1200 F.
  • the insulating disk comprises refractory glass fibers.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)
  • Special Chairs (AREA)
US676274A 1967-10-18 1967-10-18 Wheel cooling Expired - Lifetime US3558367A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US67627467A 1967-10-18 1967-10-18

Publications (1)

Publication Number Publication Date
US3558367A true US3558367A (en) 1971-01-26

Family

ID=24713877

Family Applications (1)

Application Number Title Priority Date Filing Date
US676274A Expired - Lifetime US3558367A (en) 1967-10-18 1967-10-18 Wheel cooling

Country Status (9)

Country Link
US (1) US3558367A (de)
BE (1) BE722291A (de)
CH (1) CH480441A (de)
DE (1) DE1802188B2 (de)
ES (1) ES359013A1 (de)
FR (1) FR1586315A (de)
GB (1) GB1186149A (de)
NO (1) NO128207B (de)
SE (1) SE331292B (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3753789A (en) * 1972-02-23 1973-08-21 Amsted Ind Inc Making cast steel railway wheels
US4098624A (en) * 1976-12-28 1978-07-04 Upton Industries, Inc. Process for increasing the versatility of isothermal transformation
US4155780A (en) * 1977-12-30 1979-05-22 The United States Of America As Represented By The Secretary Of The Air Force Method for prestressing turbine disks
US4394195A (en) * 1982-07-16 1983-07-19 Acf Industries, Incorporated Cooling of center plate to avoid softening
US4654091A (en) * 1980-12-10 1987-03-31 United Technologies Corporation Elimination of quench cracking in superalloy disks
US4729802A (en) * 1986-01-16 1988-03-08 J. I. Case Company Opener-disk heat-treating process and product
US4894099A (en) * 1987-09-29 1990-01-16 Ministerium Fuer Verkehrswesen Method for influencing the internal stress state of solid railroad wheels
CN112427629A (zh) * 2020-09-28 2021-03-02 扬州戴卡轮毂制造有限公司 一种流水线式轮毂铸造用水冷系统

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4444426A1 (de) * 1994-12-14 1996-06-27 Gft Gleistechnik Gmbh Radreifen-Stahl

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3753789A (en) * 1972-02-23 1973-08-21 Amsted Ind Inc Making cast steel railway wheels
US4098624A (en) * 1976-12-28 1978-07-04 Upton Industries, Inc. Process for increasing the versatility of isothermal transformation
US4155780A (en) * 1977-12-30 1979-05-22 The United States Of America As Represented By The Secretary Of The Air Force Method for prestressing turbine disks
US4654091A (en) * 1980-12-10 1987-03-31 United Technologies Corporation Elimination of quench cracking in superalloy disks
US4394195A (en) * 1982-07-16 1983-07-19 Acf Industries, Incorporated Cooling of center plate to avoid softening
US4729802A (en) * 1986-01-16 1988-03-08 J. I. Case Company Opener-disk heat-treating process and product
US4894099A (en) * 1987-09-29 1990-01-16 Ministerium Fuer Verkehrswesen Method for influencing the internal stress state of solid railroad wheels
CN112427629A (zh) * 2020-09-28 2021-03-02 扬州戴卡轮毂制造有限公司 一种流水线式轮毂铸造用水冷系统
CN112427629B (zh) * 2020-09-28 2021-11-12 扬州戴卡轮毂制造有限公司 一种流水线式轮毂铸造用水冷系统

Also Published As

Publication number Publication date
ES359013A1 (es) 1970-05-16
GB1186149A (en) 1970-04-02
BE722291A (de) 1969-03-14
CH480441A (de) 1969-10-31
SE331292B (de) 1970-12-21
NO128207B (de) 1973-10-15
FR1586315A (de) 1970-02-13
DE1802188B2 (de) 1971-04-15
DE1802188A1 (de) 1969-04-30

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Legal Events

Date Code Title Description
AS Assignment

Owner name: FIRST NATIONAL BANK OF CHICAGO, THE,ILLINOIS

Free format text: SECURITY INTEREST;ASSIGNOR:AMSTED INDUSTRIES INCORPORATED;REEL/FRAME:004666/0778

Effective date: 19860227

Owner name: FIRST NATIONAL BANK OF CHICAGO, THE, ONE FIRST NAT

Free format text: SECURITY INTEREST;ASSIGNOR:AMSTED INDUSTRIES INCORPORATED;REEL/FRAME:004666/0778

Effective date: 19860227

AS Assignment

Owner name: AMSTED INDUSTRIES INCORPORATED, A CORP. OF DE., IL

Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:FIRST NATIONAL BANK OF CHICAGO, AS AGENT;REEL/FRAME:005070/0731

Effective date: 19880831