Calculation of thermal processes in welding thick plates with moving axisymmetric heat sources^*

* Work was carried out at the St Petersburg State Polytechnical Institute according to contract No. 14.Z50.31.0018 with the Ministry of Education and Science of the Russian Federation and a grant of the Russian Government.

Abstract

The solution of the heat conductivity problem for moving axisymmetric heat sources in a flat layer (thick plate) is described. Analytical solutions were obtained for heating with moving uniformly distributed annular and circular sources and also volume sources, distributed randomly in the thickness of the flat layer. Quasi-stationary (steady) fields of dimensionless temperature are described. The results of calculations and of experimental thermal cycles in argon-shielded welding of a steel plate are compared.

Keywords:

• Temperature
• method of sources
• annular source
• circular source
• volume source
• welding
• plate
• fat layer

Notes

* Work was carried out at the St Petersburg State Polytechnical Institute according to contract No. 14.Z50.31.0018 with the Ministry of Education and Science of the Russian Federation and a grant of the Russian Government.

Selected from Svarochnoe Proizvodstvo, 2015, 68 (9) 3–7