Investigation of the weldability by resistance welding of rails strengthened by heat treatment

Kuchuk-Yatsenko, S.I.; Швец, В. И.; Didkovskii, A.V.; Taranova, T.G.

doi:10.1080/09507110903464838

Cited by 5 publications

(2 citation statements)

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“…Method of pressure welding is based on heating the rails' ends up to plastic state temperature (more than 1000 °С) and squeezing them with a certain force (depending on cross-section area and physical and mechanical properties of metal of the rails) [9]. Rails' end can be heated up with electric current -electro-contact method, with gas welding torch -gas pressure method, with highfrequency current (inductor), with lasers, plasma, friction heat, etc.…”

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confidence: 99%

Modern Methods of Rail Welding

Козырев

Усольцев

Kryukov

et al. 2017

KEM

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Existing methods of rail welding, which are enable to get continuous welded rail track, are observed in this article. Analysis of existing welding methods allows considering an issue of continuous rail track in detail. Metallurgical and welding technologies of rail welding and also process technologies reducing aftereffects of temperature exposure are important factors determining the quality and reliability of the continuous rail track. Analysis of the existing methods of rail welding enable to find the research line for solving this problem.

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confidence: 99%

Modern Methods of Rail Welding

Козырев

Усольцев

Kryukov

et al. 2017

KEM

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“…Serial production of stationary and mobile rail welding machines based on the PEWI's inventions was set up by PJSC "Kakhovka Plant of Electric Welding Equipment" (KZESO). Among the mobile machines produced at KZESO company, the most widely used models are K255, K355A and K828 [4], and since the 2000s, taking into account the need to weld thermally strengthened rails, К76F type (manufactured by PAO «МК «Аzovstal'») [5], new generation machines K920, K922 and K1000 are widely used [6,7].…”

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confidence: 99%

Method for strength calculating of structural elements of mobile machines for flash butt welding of rails

Moltasov

Tkach

Krasnowski

2017

Mechanics and Advanced Technologies

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Abstract. Purpose. The subject of this study is the strength of the loaded units of mobile machines for flash butt welding by refining high-strength rails. The theme of the work is related to the development of a technique for strength calculating of the insulation of the central axis of these machines. The aim of the paper is to establish the mathematical dependence of the pressure on the insulation on the magnitude of deflections of the central axis under the action of the upset force. Design/methodology/approach. Using the Mohr's method, the displacements of the investigated sections of the central axis under the action of the upset force and the equivalent load distributed along the length of the insulation were calculated. The magnitude of the load distributed along the length of the insulation equivalent to the draft force was determined from the condition that the displacements of the same cross sections are equal under the action of this load and under the action of the upset force. Results. An analytical expression for establishing the relationship between the pressure acting on the insulation and the magnitude of the upset force and the geometric dimensions of the structural elements of the machine was obtained. Based on the condition of the strength of the insulation for crushing, an analytical expression for establishing the relationship between the length of insulation and the size of the upset force, the geometric dimensions of the structural elements of the machine, and the physical and mechanical properties of the insulation material was obtained.Originality/cost. The proposed methodology was tested in the calculation and design of the K1045 mobile rail welding machine, 4 of which is currently successfully used in the USA for welding rails in hard-to-reach places.

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