Mutations économiques

Gibert, Ernest

doi:10.4000/books.msha.11934

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2010

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“…Because of the relatively low cost of the equipments and materials used, thermite welding is still the most widely used field welding process for rails. [2][3][4] However, all the thermite welding cannot be achieved without a series of auxiliary equipments such as refractory funnel and mould. Using those auxiliary equipments makes the thermite welding process much more tedious and more like a casting process.…”

Section: Introductionmentioning

confidence: 99%

Novel method of thermite welding

Yuan

Zhan

Jin

et al. 2010

Science and Technology of Welding and Joining

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This article presents a novel method of thermite welding. A hand operated portable welding can be conveniently realised using self-made thermite welding pencil without any welding equipments. A butt junction was obtained between two low carbon steel plates. Morphological, microstructure and mechanical analyses of the weld bead were carried out. The results demonstrated that the two steel plates were jointed by fusion bonding with the filler. No defects such as porosity and microcrack were found. The hardness test showed the low hardness of the fusion zone compared with the base material. In addition, the grain growth in HAZ did not affect the hardness of the base material. The average tensile strength of welds was 285?4 MPa, y70% of the average tensile strength of low carbon steel.

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Section: Introductionmentioning

confidence: 99%