Arc ignition cooperation control method for twin-wire welding device system

Abstract

The invention relates to an arc ignition cooperation control method for a twin-wire welding device system. The method comprises the following steps of: (1) initiating to set main and auxiliary machines and move a twin-wire welding gun to a starting point of a workpiece required to be welded; (2) detecting whether a start switch is switched off; (3) when two welding machines in the system receive a starting signal at the same time, feeding two welding wires at a preset arc ignition wire feed speed and maintaining the twin-wire welding gun in the starting point position; (4) judging whether the arc ignitions of the two welding wires are successful; (5) after confirming the success of arc ignition of both the two welding wires, gradually increasing the feed speed of the two welding wires from the arc ignition wire feed speeds to a normal weld speed at a preset slope; and (6) moving the twin-wire welding gun according to a preset motion track until ending. The arc ignition cooperation control method provided by the invention can be used for greatly increasing the deposition rate and the welding efficiency. The two welding wires are alternately heated to achieve the effect of stirring a melting bath under the action of pulsed arcs, so that the weld defects such as slag inclusion and air holes during the welding process are prevented, the quality of weld seams is improved, and splashings are reduced.

Description

Technical field [0001] The invention relates to a welding equipment control method, in particular to a dual-wire welding equipment system arc starting coordinated control method. Background technique [0002] The welding speed can reach 6m / min when welding 2~3mm thin plates with double wire welding process; when welding thick plates above 8mm, the deposition efficiency can reach 24kg / h. When welding materials such as low-alloy high-strength steels that require controlled heat input It is the best process to replace submerged arc welding. This process can weld various metal materials such as carbon steel, low-alloy steel, stainless steel, aluminum, etc. It is an advanced welding technology with high speed, high efficiency and wide application. [0003] Chinese patent 200420020691.3 discloses a single-power dual-wire automatic submerged arc welding machine, which consists of a welding power source and a welding machine. The welding machine consists of a welding car, a bracket, a wel...

AI Technical Summary

Problems solved by technology

The disadvantage is that the master and the slave must work at the same time, and it is impossible to realize a single independent work or the master and the slave work independently at the same time, the flexibility is poor, and it cannot meet the application of some special occasions

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