Optimum conditions of local heat treatment for cylindrical shells of a finite length with their end sections secured by various methods

1972 ◽  
Vol 5 (5) ◽  
pp. 512-514
Author(s):  
L. P. Besedina ◽  
Ya. I. Burak
Keyword(s):  
Heat Treatment ◽  
Finite Length ◽  
Cylindrical Shells ◽  
Local Heat ◽  
Optimum Conditions ◽  
Local Heat Treatment

Determination of local heat treatment conditions for cylindrical shells with residual stresses

1972 ◽  
Vol 5 (3) ◽  
pp. 273-277
Author(s):  
E. I. Grigolyuk ◽  
Ya. I. Burak ◽  
V. Yu. Kruchkevich ◽  
Ya. S. Podstrigach
Keyword(s):  
Heat Treatment ◽  
Residual Stresses ◽  
Cylindrical Shells ◽  
Local Heat ◽  
Local Heat Treatment ◽  
Treatment Conditions

Improvement of Fatigue Properties of Fillet Lap Joints by Applying. Local Heat Treatment with TIG Arc.

1999 ◽  
Vol 17 (2) ◽  
pp. 319-325 ◽  
Author(s):  
Koichi OSAWA ◽  
Tsuyoshi SHIOZAKI ◽  
Toshiaki URABE ◽  
Akihide YOSHITAKE ◽  
Takanobu SAITO ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Local Heat ◽  
Lap Joints ◽  
Fatigue Properties ◽  
Local Heat Treatment

Enhancement of Drawability by Local Heat Treatment

CIRP Annals ◽  
1998 ◽  
Vol 47 (1) ◽  
pp. 181-184 ◽  
Author(s):  
F. Vollertsen ◽  
K. Lange ◽  
K. Lange
Keyword(s):  
Heat Treatment ◽  
Local Heat ◽  
Local Heat Treatment

The Influence of Surface Treatment and Microstructural Parameters on the Rail/Wheel Tribological Behaviours

2005 ◽  
Author(s):  
Fazli Rahman ◽  
Y. A. Kharlamov ◽  
J. A. Chattha
Keyword(s):  
Heat Treatment ◽  
Negative Impact ◽  
Local Heat ◽  
Plasma Jets ◽  
Rolling Contact ◽  
Microstructural Parameters ◽  
Heating And Cooling ◽  
Local Heat Treatment ◽  
Theoretical Reasoning ◽  
Rolling Noise

The long time world railways practice has shown that the rail-wheel mechanical system is one of the most unique and complex systems. During transportation a variety of rail and wheel damages can take place due to service conditions, used material and technology of their production. Damage mechanisms such as wear, surface cracks, spalls, shells and elastic deformation as a result to rolling contact stresses can significantly reduce the service life of railway wheel sets and track and causing a negative impact on the rolling noise as well as on the ridding comfort. This paper presents that a proper understanding of the heating and cooling mechanisms of the wheel surface for the required hardening purpose is necessary and a mathematical model is developed to present hardening process (local heat treatment). As the material of wheel and rail is carbon steel and the heat treatment (hardening) is the most effective and efficient methods for decreasing wear on wheel sets because wheel sets are more prone to wear due to their excessive use as compare to rail or track.. The only local heat treatment is justifiable technically and economically which is applied to the most loaded working surface of wheel sets without dealing with the central part or bulk of the material. The quality of heat treatment of working surfaces of wheels is associated with the use of concentrated energy sources, such as electron and laser beam and plasma jets. This paper presents some experimental results besides the theoretical reasoning and discussions which show that the wear on the wheel sets ridges after plasma hardening is much lower (2.5 to 3 times) than the other standard heat treatments and hence due to the proper contact of railwheel the vehicle system dynamics improves as a result.

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