GB745285A - Improvements relating to the continuous hardening of shafts or bars - Google Patents

Improvements relating to the continuous hardening of shafts or bars

Info

Publication number
GB745285A
GB745285A GB2567752A GB2567752A GB745285A GB 745285 A GB745285 A GB 745285A GB 2567752 A GB2567752 A GB 2567752A GB 2567752 A GB2567752 A GB 2567752A GB 745285 A GB745285 A GB 745285A
Authority
GB
United Kingdom
Prior art keywords
inductor
workpiece
quenching
supporting
bushes
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
GB2567752A
Inventor
William John Gerard Cosgrave
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.)
Electric Furnace Co
Original Assignee
Electric Furnace Co
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 Electric Furnace Co filed Critical Electric Furnace Co
Priority to GB2567752A priority Critical patent/GB745285A/en
Publication of GB745285A publication Critical patent/GB745285A/en
Expired legal-status Critical Current

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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/28—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for plain shafts

Landscapes

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

Abstract

745,285. Hardening metals. ELECTRIC FURNACE CO., Ltd. Oct. 7, 1953 [Oct. 14, 1952], No. 25677/52. Class 72. A method of hardening a rigid elongated metal shaft or bar comprises supporting the workpiece at spaced points along its length on either side of an electromagnetic inductor through the heating zone of which the workpiece extends, and producing relative movement parallel to the axis of the workpiece between the workpiece and the inductor to cause the latter to heat the workpiece progressively along its length, and is characterised in that, during the heat-treatment, the workpiece passes through an intermediate supporting guide, fixed adjacent to the inductor, which prevents lateral distortion of the workpiece caused by the bending of its heated portion in the region of the inductor. The supporting guide, which may be a close-fitting liquidcooled bush, may be located in between the inductor and quenching device, within the inductor itself, or may be mounted on the side of the inductor remote from the quenching device. Fig. 2 shows an inductor-quench assembly for the simultaneous treatment of two verticallymounted workpieces and comprises an inductor 24, quenching rings 26 and two pairs of bushes 33, 35. The upper bushes 33, which are mounted in a water-cooled support 34, are located close to the top of the inductor and thus restrain any lateral distortion of the workpieces adjacent to the inductor where the heating is greatest, and the lower bushes 35 provide lateral support below the heating zone. In the embodiment shown in Fig. 5, a workpiece 40 is passed longitudinally through an inductor 44, within which is incorporated a guide sleeve 46 for supporting the workpiece against distortion, and a quenching ring 45. Immediately beyond the quenching ring 45 is provided a second supporting guide in the form of a saddle block 47, on which the lower surface of the workpiece can rest to prevent any sagging, and beyond the said saddle block an auxiliary quenching ring 48 is mounted to cool the workpiece further. Specification 585,416, [Group XXX], is referred to.
GB2567752A 1952-10-14 1952-10-14 Improvements relating to the continuous hardening of shafts or bars Expired GB745285A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2567752A GB745285A (en) 1952-10-14 1952-10-14 Improvements relating to the continuous hardening of shafts or bars

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2567752A GB745285A (en) 1952-10-14 1952-10-14 Improvements relating to the continuous hardening of shafts or bars

Publications (1)

Publication Number Publication Date
GB745285A true GB745285A (en) 1956-02-22

Family

ID=10231540

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2567752A Expired GB745285A (en) 1952-10-14 1952-10-14 Improvements relating to the continuous hardening of shafts or bars

Country Status (1)

Country Link
GB (1) GB745285A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0332284A1 (en) * 1988-03-10 1989-09-13 Dana Corporation Low grade material axle shaft

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0332284A1 (en) * 1988-03-10 1989-09-13 Dana Corporation Low grade material axle shaft

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