Heat‐Straightening of Steel: Fact and Fable
Publication: Journal of Structural Engineering
Volume 115, Issue 11
Abstract
Although heat‐straightening has been used for the repair of damaged steel structures for over 40 yr, the process is more of an art than a science. Since the effects of heat‐straightening steel structures are not well understood by the engineering community, a number of undocumented opinions have appeared in the literature that are false or misleading. Presented here is a state‐of‐the‐art review in the form of popular fables followed by the documented facts related to each one. Sixteen fables are listed in two categories: basic material properties and behavior of structural systems. The references cited form a comprehensive bibliography on the subject of heat‐straightening effects on steel. The selection of facts and fables has been chosen to provide the reader with an understanding of the process, important factors influencing heat‐straightening of rolled and built‐up members, a working knowledge of its effect on the material properties of steel, and the sources for additional information. Heat‐straightening has produced a good track record that illustrates the potential of the method for providing safe and economical repairs.
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References
1.
Bernard, P., and Schulze, K. (1966). “Flame straightening in ship‐building.” Mittelunge der BEFA (Beratungsstelle fur Autogen Technik), Köln, West Germany, 17(11), 2–6 (in German).
2.
Blodget, O. W. (1972). “Distortion…how metal properties affect it.” Welding Engr., 57(2), 40–46.
3.
Brockenbrough, R. L. (1970). “Theoretical stresses and strains from heat curving.” J. Struct. Div., ASCE, 96(7), 1421–1444.
4.
Brockenbrough, R. L., and Ives, K. D. (1970). “Experimental stresses and strains from heat curving.” J. Struct. Div., ASCE, 96(7), 1305–1331.
5.
Brockenbrough, R. L., and Johnston, B. G. (1968). USS steel design manual. U.S. Steel Corp., Pittsburgh, Pa.
6.
Brockenbrough, R. L., and Johnston, B. G. (1970). “Criteria for heat curving steel beams and girders.” J. Struct. Div., ASCE, 96(10), 2209–2226.
7.
Burbank, B. B. (1968). “Straightening distorted weldments.” Report SR‐185, Report to the Ship Structure Committee, U.S. Coast Guard, Washington, D.C., July.
8.
Ciesicki, H., and Butler, S. (1968). “Flame and camber your own beams.” Industry and Welding, 31(4), 76–79.
9.
Crooker, T. W., and Harrison, H. L. (1965). “The effects of flame cambering on the bending strengths of I‐beams.” Welding J., 44(12), Res. Supplement, 545s–548s.
10.
Ditman, O. (1961). “Determination of thermal shrinkage in structural steel,” thesis presented to the University of Washington, at Seattle, Wash., in partial fulfillment of the requirements for the degree of Master of Science.
11.
“Flame buckled this steel…and flame straightened it, part 1.” (1959). Welding Engr., 44(2), 43.
12.
For Chin, W. (1962). “Linear shrinkage of steel,” thesis presented to the University of Washington, at Seattle, Wash., in partial fulfillment of the requirements for the degree of Master of Science.
13.
Gipson, G. S., and Ortiz, J. C. (1986). “Toward an analytical description of the heat‐straightening phenomenon—The thermal problem.” SECTAM XIII Proc., 772–778.
14.
Graham, R. (1975). “Investigation of flame straightening methods for steel structures.” Manufacturing Development Report MDR 2‐32075, Boeing Co., Oct. 30.
15.
Harrison, H. L. (1950). “A study of the Holt method of heat (contraction) straightening,” thesis presented to the University of Washington, at Seattle, Wash., in partial fulfillment of the requirements for the degree of Master of Science.
16.
Harrison, H. L. (1952). “Straightening structural members in place.” Welding J., 31(5), Res. Supplement, 257s–262s.
17.
Harrison, H. L., and Mills, B. D., Jr. (1951). “Effects of light peening on the yielding of steel.” Welding J., 30(5), Res. Supplement, 251s–253s.
18.
Higgins, T. R. (1966). “Discussion on the effects of flame cambering on the bending strength of I‐beams.” Welding J., 45(6), Res. Supplement, 284s–288s.
19.
Holt, J. E. (1955). “Flame straightening: A friend in need.” Welding Engr., 40(10), 44–46,
(12), 30–31.
20.
Holt, R. E. (1965). “Flame straightening basics.” Welding Engr., 50(9), 49–53.
21.
Holt, R. E. (1971). “Primary concepts in flame bending.” Welding Engr., 56(6), 416–424.
22.
Holt, R. E. (1977). “How to control and correct warping.” Welding Design and Fabrication, 49(6), 98–102.
23.
Horton, D. L. (1973). “Heat curved mild steel wide flange sections: An experimental and theoretical analysis,” thesis presented to the University of Washington, at Seattle, Wash., in partial fulfillment of the requirements for the degree of Master of Science.
24.
“How fire destroyed and fire repaired Air Force hangars.” (1959). Engrg. News Rec., 162(24), 50–53.
25.
Kihara, H., Nisida, M., and Fujita, Y. (1961). “On the residual stresses due to spot heating.” Document No. X‐267‐61, Int. Inst. of Welding, Commission X, Tokyo, Japan.
26.
“Kinks go up in flames.” Engrg. News Rec., 206(15), 17.
27.
Maeda, T., and Yada, T. (1961). “Investigation of shrinkage due to multiple spot heating.” Document No. X‐268‐61, Int. Inst. of Welding, Commission X, Tokyo, Japan.
28.
Maeda, T., and Yada, T. (1963). “Fundamental nature of shrinkage distórtion due to spot heating on a rectangular plate.” Document No. X‐327‐63, Int. Inst. of Welding, Commission X, Tokyo, Japan.
29.
Masubuchi, K. (1960). “Calculation and measurement of residual stresses due to spot heating.” Document No. X‐259‐60, Int. Inst. of Welding, Commission X, Tokyo, Japan.
30.
Meyers, P. S. (1976). “Fundamentals of heat flow in welding.” Welding Res. Council Bulletin, 123 (July).
31.
Moberg, K. L. (1979). “Damage assessment and contraction straightening of steel structures,” thesis presented to the University of Washington, at Seattle, Wash., in partial fulfillment of the requirements for the degree of Master of Science.
32.
Morris, J. J. (1949). “Controlled distortion—An aid to metal working.” Welding J., 28(11), 1080–1082.
33.
Newman, E. M. (1959). “Repair of fire damaged structural steel.” Military Engr., 9(4), 488–450.
34.
Nicholls, J. I., and Weerth, D. E. (1972). “Investigation of triangular heats applied to mild steel plates.” Engrg. J., Oct., 137–141.
35.
“Oxyacetylene torches straighten fire‐warped steel.” (1959). Welding Engr., Mar., 44(3), 31–34.
36.
Pattee, H. E., Evans, R. M., and Monroe, R. E. (1969). “Flame straightening and its effect on base metal properties.” Summary Report to Ship Structure Committee concerning first phase of Project SR‐185, Straightening Distorted Weldments, Battelle Memorial Inst., Columbus, Ohio, Aug.
37.
Pattee, H. E., Evans, R. M., and Monroe, R. E. (1970). “Effect of flame and mechanical straightening on material properties of weldments.” Summary Report on Ship Structure Committee on Project SR‐185, Straightening Distorted Weldments, Battefle Memorial Inst., Columbus, Ohio.
38.
Pfeiffer, R. (1963). “The flame straightening of sheeting and sheet metal structures.” Mitteilungen der BEFA, Köln, West Germany, 14(9), 1–7 (in German).
39.
Roeder, C. W. (1985). “Use of thermal stress for seismic damage repair.” Final Report on NSF Grant CEE‐82‐05260, Univ. of Washington, Seattle, Wash., Oct.
40.
Roeder, C. W. (1986). “Experimental study of heat induced deformation.” J. Struct. Engrg., ASCE, 112(10), 2247–2262.
41.
Roeder, C. W. (1987). “Predictions of deformations due to heat curving.” Bridges and Transmission Line Struc., ASCE, New York, N.Y., 101–110.
42.
Rothman, R. L. (1973). “Flame straightening quenched and tempered steels in ship constrution.” Report No. 247, Ship Structs. Committee, U.S. Coast Guard, Washington, D.C.
43.
Rothman, R. L., and Monroe, R. E. (1973). “Effect of temperature and strain upon ship steels.” Report No. 235, Ship Structs. Committee, U.S. Coast Guard, Washington, D.C.
44.
Shanafelt, G. O., and Horn, W. G. (1984). “Guidelines for evaluation and repair of damaged steel bridge members.” NCHRP Report No. 271, Transp. Res. Board, Nat. Res. Council, Washington, D.C., June.
45.
“Steels for elevated temperature service.” (1966). ADUSS 43‐1089, U.S. Steel Corp., Pittsburgh, Pa.
46.
Thatcher, W. M. (1967). “Horizontally curved steel girders—Fabrication and design considerations.” Engrg. J., 4(3), 107–112.
47.
“The shortening eyebars to equalize the stress.” (1946). Bulletin No. 460, Amer. Railway Engrg. Assoc., Chicago, Ill., Apr.
48.
Tsalman, L. B. (1959). “Straightening welded structures by heating with an oxyacetylene flame.” Welding Production, Cambridge, U.K., 1(5), 29–31 (in Russian).
49.
Watanabe, M., and Satoh, K. (1951). “On the correction of distortion in welded thin plate structures.” J. Japan Welding Soc., Tokyo, Japan, 20, 194–202 (in Japanese).
50.
Weerth, D. E. (1971). “Theoretical and experimental analysis of heat curved mild steel,” thesis presented to the University of Washington, at Seattle, Wash., in partial fulfillment of the requirements for the degree of Master of Science.
51.
Yoch, A. E. (1957). “Flame cambering of beams for bridges.” Welding Engr., 42(2), 71.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 115 • Issue 11 • November 1989
Pages: 2773 - 2793
Copyright
Copyright © 1989 ASCE.
History
Published online: Nov 1, 1989
Published in print: Nov 1989
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