TITLE:
Study on the Role of Supersonic Nozzle in Fiber Laser Cutting of Stainless Steel
AUTHORS:
Yijun Zhou, Jilan Kong, Jin Zhang
KEYWORDS:
Fiber Laser Cutting, Stainless Steel, Striation, Supersonic Nozzle
JOURNAL NAME:
Materials Sciences and Applications,
Vol.8 No.1,
January
11,
2017
ABSTRACT: Striation-free laser cutting, especially for thick
section steel, is hard to obtain due to several factors. The inside shape of
the gas nozzle is considered to be one of the most vital factors in
striation-free fiber laser cutting. 0.8 mm normal nozzle and a supersonic nozzle are used to cut 0.8 mm AISI316L stainless steel (022Cr17Ni12Mo2)
separately. The orthogonal experiment takes nozzle standoff distance, cutting
speed, Laser power and gas pressure as its impacting factors. The same
orthogonal table is adopted in different condition, using normal nozzle and
using supersonic nozzle. In the mean time, Ar gas is used as assisted cutting
gas in the experiment. The data from this experiment show that supersonic
nozzle seems to be a strong helper for fiber laser cutting. Feed rate’s effect seems
stable and inconspicuous under the condition of using supersonic nozzle.