THE METHOD OF WIRE ANNEALING PROCESS

Abstract

The innovative wire annealing process is a constant process and includes wire heating by laser beams, and then wire reeling and cooling.

Claims

1. (canceled)

2. A wire annealing process that refers to the wire constant production process after its drawing in a puller, where a system of lasers with beams' power density of 0.1-1 kW/cm2 heats the constantly shifted wire within the period from 1 to 20 seconds to the approximate temperature of 550-750? C., which wire is then reeled, while the wire annealing time on the reel under natural cooling shall not exceed 400 seconds.

Description

[0010] A picture represents the subject of the innovation in the general arrangement.

[0011] The method of the innovative wire annealing process in the presentation consists of wire heating performed in a laser chamber (6) by a system of lasers (5) controlled by a steering master system (4) turned directly to the wire (9) just after the wire drawing in the puller (3) by the die (2). The wire (9) is constantly on the move, unreeled (1) and reeled again (9). As the experiments and researches prove, the effectiveness of laser energy use depends on laser power regulation, an amount of laser beaming density and their number from 2 to 20 in a row directed to the wire, depending on a diameter of the heated wire, so that within the period of 1 to 20 seconds a proper temperature (550?750? C.) of the constantly shifted wire could be achieved. As a result, the thermal energy sent from the lasers to the wire renders the annealing pre-treatment process that lasts from 30 to 400 seconds, depending on the finally dedicated mechanical parameters. After the wire heating in the pre-treatment process, it shall be reeled (7), in order to be transported for the proper annealing process to the stationary furnace (8). It is assumed that thanks to the laser processing the wire will be annealed in 10?20%. It means that at that stage the initial relaxation of residual stress (healing) and lowering of the wire mechanical properties, such as tensile strength and yield strength of 10?20% shall be performed.