Influence of methods of arc surfacing with flux-cored wire on penetration of base metal and formation of deposited metal

Abstract

The influence of methods of automatic arc surfacing on penetration of base metal, quality of formation and geometric sizes of deposited beads was investigated. In the experiments nine batches of flux-cored wires (25Kh5FMS type of deposited metal) of the diameter of 1.8; 2.4 and 2.8 mm for submerged arc, shielding gas and open arc surfacing were used. The surfacing was carried out in a wide range of modes: I s = 150-450 A; U s = 20-34 V at the same surfacing speed of 20 m/h. It was found that the greatest influence on formation of deposited beads is exerted by arc voltage. Moreover, the range of DU T voltages, at which a good formation of deposited beads and absence of pores is provided, does not coincide during surfacing by different methods with wire of the same diameter. The results obtained in this work can be used for selecting the method of arc surfacing, surfacing modes, which ultimately meet the operating conditions and the requirements to the deposited metal for definite parts. These results will be also used in databases in the development of computer programs for robotized additive technologies of arc surfacing. 13 Ref., 1 Table , 6 Figures.

Problems and prospects of surfacing copper and copper parts by wear-resistant layers (Review)

“…Разом з тим, виходячи з даних у технічній літературі й практичного досвіду [23,24] відомо, що зменшити глибину проплавлення при наплавленні електродними дротами можливо за рахунок оптимізації електричних параметрів дугового наплавлення й застосуванні дротів малих діаметрів (до 2,0 мм).…”

Hardfacing of Copper

“…Greater versatility is characteristic of gas-shielded surfacing methods, the primary advantage of which is the possibility of observing the process and readjusting the parameters during surfacing [20,22]. During metal arc surfacing processes, penetration depth can be reduced by optimising electric parameters and using small diameter wires (ø < 2.0 mm) [23,24].…”