GB775660A - Improvements in and relating to the design of bolts and studs for use at high temperatures - Google Patents

Improvements in and relating to the design of bolts and studs for use at high temperatures

Info

Publication number
GB775660A
GB775660A GB2077553A GB2077553A GB775660A GB 775660 A GB775660 A GB 775660A GB 2077553 A GB2077553 A GB 2077553A GB 2077553 A GB2077553 A GB 2077553A GB 775660 A GB775660 A GB 775660A
Authority
GB
United Kingdom
Prior art keywords
length
parts
sectional area
cross
flanges
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
GB2077553A
Inventor
Geoffrey Charles Edward Olds
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB2077553A priority Critical patent/GB775660A/en
Publication of GB775660A publication Critical patent/GB775660A/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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B31/00—Screwed connections specially modified in view of tensile load; Break-bolts
    • F16B31/06—Screwed connections specially modified in view of tensile load; Break-bolts having regard to possibility of fatigue rupture
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B7/00—Steam boilers of furnace-tube type, i.e. the combustion of fuel being performed inside one or more furnace tubes built-in in the boiler body
    • F22B7/16—Component parts thereof; Accessories therefor, e.g. stay-bolt connections

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Connection Of Plates (AREA)

Abstract

775,660. Bolts &c. BRITISH THOMSONHOUSTON CO., Ltd. July 23, 1954 [July 27, 1953], No. 20775/53. Class 89 (1). A bolt or stud capable of being stressed at a temperature at which creep may occur, has its cross-sectional area over a part of its length in. creased, whereby substantially to confine the plastic-strain occurring in the bolt &c. to the part or parts of smaller cross-sectional area. In one arrangement a stud of effective length M with screwed parts C, D is stressed to secure together flanges E, F. The reduced parts A, B, each of length N/2 and cross-sectional area a, are symmetrical about the increased part L, which has a cross-sectional area b. The nuts G, each of length n/2, engage parts C, D and act on areas c of the flanges. These symbols are combined in the formula where f is a fraction of the plastic strain utilized for elastic strain and stress relief in parts A, B; k is a numerical fraction taking account of the reduction in stress from end to end of the nut; p, q and r are small fractions which define small proportions of plastic strain which occur in length L, the flanges, and the nut and screw-thread respectively.
GB2077553A 1953-07-27 1953-07-27 Improvements in and relating to the design of bolts and studs for use at high temperatures Expired GB775660A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2077553A GB775660A (en) 1953-07-27 1953-07-27 Improvements in and relating to the design of bolts and studs for use at high temperatures

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2077553A GB775660A (en) 1953-07-27 1953-07-27 Improvements in and relating to the design of bolts and studs for use at high temperatures

Publications (1)

Publication Number Publication Date
GB775660A true GB775660A (en) 1957-05-29

Family

ID=10151478

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2077553A Expired GB775660A (en) 1953-07-27 1953-07-27 Improvements in and relating to the design of bolts and studs for use at high temperatures

Country Status (1)

Country Link
GB (1) GB775660A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5533580A (en) * 1994-04-14 1996-07-09 Reaves; Donald G. Tie rod loosening tool for use with a tie rod assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5533580A (en) * 1994-04-14 1996-07-09 Reaves; Donald G. Tie rod loosening tool for use with a tie rod assembly

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