Action Mechanism And Technics Study Of Using Laser Drilling Microhole On Carbon Steel

Laser drilling basic principle was studied systematically according to the interaction mechanism between laser and drilled substance in this paper. Problem of Unstable status, nonlinear process and phase transition in drilling bores with laser on carbon steel was solved by using method of finite element analysis. Hear source model and temperature grades model were also set with the software of ANSYS for carbon steel to induce the distribution of temperature style.Three kinds of carbon steels (35#, 45# and T10#) with different quantity of carbon contents were used in the drilling test and the result got by comparing analogue values and experimental data offer practical gist for laser drilling bores on carbon steel. That kind of drilling techincs was also studied, the infection of impulse energy, impulse quantity, impulse frequency and focus distance for this kind of laser drilling on different carbon steels was analyzed. By analyzing the in-coming reasons of recast layers in carbon steels, nexus between thickness of recast layer and laser frequency, and between bore smoothness and carbon contents was elicited, too.