Estimating the working life of steel beams on the basis of their mechanical properties
Forged steel 50 rollers are used in the roughing group of wire and small-rod mills. In intense rolling, the roller pin often breaks, since the pin experiences the maximum stress. It is established that the fracture is of fatigue type, and three disintegration zones are identified. Crack propagation...
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| Published in: | Steel in translation Vol. 40; no. 2; pp. 157 - 159 |
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| Main Authors: | , , , , |
| Format: | Journal Article |
| Language: | English |
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Heidelberg
Allerton Press, Inc
01-02-2010
Springer Nature B.V |
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| Abstract | Forged steel 50 rollers are used in the roughing group of wire and small-rod mills. In intense rolling, the roller pin often breaks, since the pin experiences the maximum stress. It is established that the fracture is of fatigue type, and three disintegration zones are identified. Crack propagation is due to the stress in the crack tip. The rate of crack propagation in cyclic loading depends on the structure of the metal, the grain size, and the mechanical properties of the rollers. The unbroken rollers are characterized by high values of the impact strength, initial and final temperatures of ingot forging, and σ
y
/σ
B
. An empirical dependence of the number of roller rotations to pin fracture on the mechanical properties of the material and the loads is established. Small-grain structure of the metal matrix and purity of the metal ensure a good combination of strength and plasticity. |
|---|---|
| AbstractList | Forged steel 50 rollers are used in the roughing group of wire and small-rod mills. In intense rolling, the roller pin often breaks, since the pin experiences the maximum stress. It is established that the fracture is of fatigue type, and three disintegration zones are identified. Crack propagation is due to the stress in the crack tip. The rate of crack propagation in cyclic loading depends on the structure of the metal, the grain size, and the mechanical properties of the rollers. The unbroken rollers are characterized by high values of the impact strength, initial and final temperatures of ingot forging, and sigma sub(y)/ sigma sub(B). An empirical dependence of the number of roller rotations to pin fracture on the mechanical properties of the material and the loads is established. Small-grain structure of the metal matrix and purity of the metal ensure a good combination of strength and plasticity. Forged steel 50 rollers are used in the roughing group of wire and small-rod mills. In intense rolling, the roller pin often breaks, since the pin experiences the maximum stress. It is established that the fracture is of fatigue type, and three disintegration zones are identified. Crack propagation is due to the stress in the crack tip. The rate of crack propagation in cyclic loading depends on the structure of the metal, the grain size, and the mechanical properties of the rollers. The unbroken rollers are characterized by high values of the impact strength, initial and final temperatures of ingot forging, and σ y /σ B . An empirical dependence of the number of roller rotations to pin fracture on the mechanical properties of the material and the loads is established. Small-grain structure of the metal matrix and purity of the metal ensure a good combination of strength and plasticity. Forged steel 50 rollers are used in the roughing group of wire and small-rod mills. In intense rolling, the roller pin often breaks, since the pin experiences the maximum stress. It is established that the fracture is of fatigue type, and three disintegration zones are identified. Crack propagation is due to the stress in the crack tip. The rate of crack propagation in cyclic loading depends on the structure of the metal, the grain size, and the mechanical properties of the rollers. The unbroken rollers are characterized by high values of the impact strength, initial and final temperatures of ingot forging, and σ^sub y^/σ^sub B^. An empirical dependence of the number of roller rotations to pin fracture on the mechanical properties of the material and the loads is established. Small-grain structure of the metal matrix and purity of the metal ensure a good combination of strength and plasticity.[PUBLICATION ABSTRACT] |
| Author | Shchelkov, M. N. Belov, E. G. Saprykin, E. V. Salomykin, V. V. Kaligin, S. A. |
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| DOI | 10.3103/S0967091210020130 |
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| Keywords | Disintegration Zone Impact Strength Slag Inclusion Empirical Dependence Steel Beam |
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| References | Kuznetsov, I.S., Shevchenko, V.F., Salomykin, V.V., et al., Extending the Working Life of Forged Steel Rollers for Wire Mill, Stal’, 2005, no. 10, pp. 75–77. IvanovV.S.Ustalostnoe razrushenie metallov1968MoscowMetallurgiya(Fatigue Failure of Metals) IvanovaV.S.Terent’evV.F.Priroda ustalosti metallov1975MoscowMetallurgiya(Nature of Metal Fatigue) MatvienkoYu.G.Modeli i kriterii mekhaniki razrusheniya2006MoscowFizmatlit(Models and Principles of Failure Mechanics) Ustalost’ i vyazkost’ razrusheniya metallov: sb. tr. IMET (Fatigue and Failure Strength of Metals: Proceedings of the Institute of Metallurgy), Moscow: Nauka, 1974. V.S. Ivanov (9279_CR4) 1968 9279_CR1 9279_CR3 V.S. Ivanova (9279_CR2) 1975 Yu.G. Matvienko (9279_CR5) 2006 |
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| Snippet | Forged steel 50 rollers are used in the roughing group of wire and small-rod mills. In intense rolling, the roller pin often breaks, since the pin experiences... |
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| SubjectTerms | Chemistry and Materials Science Crack propagation Fatigue failure Fracture mechanics Materials Science Mechanical properties Rollers Roughing Stresses Structural steels |
| Title | Estimating the working life of steel beams on the basis of their mechanical properties |
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