Automatic welding method for realizing drop properties of submerged arc welder by field digital preset mode

Abstract

The invention discloses an automatic welding method for realizing the drop properties of a submerged arc welder by a field digital preset mode, which adopts a field bus to realize data transmission between a submerged arc welder power supply control system and a welding tractor control system, a digital preset mode to perform dynamic matching between preset welding process parameters and actual welding process parameters by which the drop properties of the submerged arch welder can be realized in the welding tractor control system so as to realize complete automation of the welding process, and a friendly man-computer interface so as to greatly facilitate user operation.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a method for realizing the automatic welding process of a submerged arc welding machine by adopting a field parameter digital preset method based on a field bus. Background technique [0002] At present, the submerged arc welding machines produced by the welding industry have the highest market share or the submerged arc welding machines controlled by analog circuits. At the same time, the data transmission between the DC power supply and the submerged arc welding trolley adopts multi-core cables with 10 cores or more. The submerged arc welding machine has realized the automatic welding process of digital preset welding parameters, but its digital preset part is limited to the flat characteristic DC power supply, and its working principle is generally to filter the current and voltage output by the arc welding rectifier through a specific circuit , A / D conversion, sent to singl...

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Problems solved by technology

At the same time, the reduced characteristic automatic submerged arc welding machine realized by the analog circuit, because there is no quantified parameter preset, the arc starting process of welding, the operation during the welding adjustment process is inconvenient, the controllability is poor, and the stability is poor, and the degree of automation is limited. It is beneficial to the formulation and implementation of welding process specifications. These shortcomings are the obvious defects of the automatic submerged arc welding machine with analog circuits; moreover, the data transmission between the DC power supply and the submerged arc welding trolley adopts other serial ports such as LAN bus or RS485. Data transmission speed and distance are limited, and its anti-interference ability will also be greatly limited

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