The influence of welding flash on enhancing heat transfer of steel piston

In order to study the influence of welding flash on heat transfer performance steel piston cooling gallery, pistons with different structures are studied. this paper, finite element simulation calculation and non-flash structure same model annular cavity section is carried out separately, amount carbon deposited in top gallery after 1000 hours test measured. The comparative analysis finds that existence hinders resulting an increase temperature inner surface which turn increases entire head. Carbon deposits piston, affects effect.