Direct current welding current adjusting method

A welding current and current size technology, applied in welding equipment, arc welding equipment, manufacturing tools, etc., can solve problems such as inconvenient current adjustment, affecting equipment work, power grid imbalance, etc. , good consistency

Inactive Publication Date: 2015-05-13
陈进
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Using an AC welding machine, it will appear when the workpiece is welded; Welding defect: the phenomenon of discontinuous, non-dense or poor connection of metal in the welded joint during the welding process
Current adjustment is inconvenient, and a single power supply causes the power grid to be unbalanced, affecting the work of other equipment

Method used

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Effect test

Embodiment Construction

[0015] The following invention is used as a further detailed description, but not as any limitation to the invention.

[0016] Embodiment of the present invention: a method for adjusting the DC welding current. The method adopts a movable iron core in the middle of the welding transformer iron core, and adjusts the size of the eddy current to realize the current size, or adopts no movable iron core, and connects the positive pole or the negative pole in series. A resistance box, adjust the size of the resistance value to realize the size of the current.

[0017] There is no movable iron core, and the positive or negative poles are connected in series to a resistance box. The specific method of adjusting the resistance value is to conduct power-on heating and power-off cooling at the same time during pressurization, so as to prevent the joint from floating and false welding. It is most suitable for thermocompression welding, soldering and resin bonding of flexible materials and...

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PUM

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Abstract

The invention discloses a direct current motor improvement method. According to the method, an existing alternating current motor serves as a cylinder, four diodes are additionally arranged on the alternating current motor and are arranged on an aluminum plate to form a single-phase bridge circuit, then the output end of an alternating current welding machine is connected to the input of the bridge circuit, alternation is conducted through the diodes, and breakover is achieved so as to achieve improvement of the alternating current motor. When the electrowelding transformer current is transmitted in from 380 / 220v, the transmitting-out end of an electrowelding transformer is connected to 75 v, and it is presumed that a point A is positive, point A-D1-RL-direct current electric reactor-direct current diverter-D3-75v-negtive electrode is achieved; otherwise, when a point O is positive, O-D2-RL-direct current electric reactor-direct current diverter-D4-point A is achieved, meanwhile the alternating current conducts alternating breakover till ending according to the variable quantity of 50 HZ per second, and thus smooth and steady direct current is shifted in and output.

Description

technical field [0001] The invention relates to a method for adjusting DC welding current, which belongs to the technical field of welding equipment improvement. Background technique [0002] The energy saving of the electric welding machine is reflected in two aspects: energy saving at no-load and energy saving at load. The electric welding machine can put the main circuit, fan, etc. into a stop state when it is no-load, and the no-load power consumption is only a few watts; the efficiency of the electric welding machine is higher than that of a thyristor rectifier welding machine when it is loaded. [0003] Since the working frequency of the electric welding machine is above 20KHZ, it has a fast response speed and can control the droplet transfer by subdividing it into multiple stages. For CO2 gas protection, it can greatly reduce spatter, and for pulse MIG / MAG welding, it can effectively control the stability of jet transition. [0004] Using an AC welding machine, it w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/095
CPCB23K9/095
Inventor 陈进
Owner 陈进
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