Aluminum alloy digital welding machine with smooth transition double-pulse parameters

Abstract

The invention discloses an aluminum alloy digital welding machine with smooth transition double-pulse parameters, which comprises a power main circuit, a main control mother board, a main control micro controller unit (MCU), a wire feed driving circuit, an advanced RISC machine (ARM) controlled human-machine interactive system and a hardware proportion integration differentiation (PID) controller, wherein the hardware PID controller, the wire feed driving circuit and the main control MCU are arranged on the main control mother board; the wire feed driving circuit is connected with the main control MCU; the hardware PID controller is connected with the main control MCU and the control port of the power main circuit; the current input end of the power main circuit is connected with the utility power; and the current output end of the power main circuit is connected with a welding load. The MCU and the ARM are used as control cores, pulse width modulation (PWM) is generated through the hardware PID controller to realize driving control of the main circuit, the work load of the main control MCU is reduced, the main control MCU quickly and stably completes welding process flow control and double-pulse waveform database management task, the welding efficiency is improved, and stable welding of aluminum alloy from low current to high current is realized.

Description

Aluminum Alloy Digital Welding Machine with Smooth Transition Double Pulse Parameters technical field The invention relates to the technical field of double-pulse aluminum alloy digital welding machines, in particular to an aluminum alloy digital welding machine with smooth transition double-pulse parameters. Background technique With the development of power electronics technology and digital technology, high-performance single-chip microcomputers (MCUs) have made epoch-making breakthroughs in terms of functions, processing speed and processing capabilities, and the theory and implementation methods of digital signal processing have achieved unprecedented development. One of the fastest growing disciplines. After the high-end single-chip microcomputer MCU was successfully introduced into the field of welding power source control, it provided the possibility to further improve the performance of the welding process and provided opportunities for trying new welding processe...

AI Technical Summary

Problems solved by technology

However, domestic manufacturers are still exploring the dual-pulse welding technology of aluminum alloys, and have not yet made a substantial breakthrough, mainly because the internal regularity has not been found in the design of double-pulse parameters.

The reason is mainly because there are many welding parameters of the double pulse, and a large number of process tests are required for proper matching between them, while the aluminum alloy dissipates heat quickly, and the welding process is extremely unstable; in addition, the arc length is unstable, and the welding wire is easy to burn back. Short circuit, low melting point and easy evaporation of welding wire lead to very unstable arc state

Images