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Welding bead shapes emulation device of arc-welding

An arc welding and simulation device technology, applied in arc welding equipment, welding equipment, electrical digital data processing and other directions, can solve the problems of huge working time, limited scope of application, unrealistic and so on

Inactive Publication Date: 2008-08-27
DAIHEN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a problem in this method that suitable welding conditions cannot be derived when welding is performed under construction conditions that have not been practiced in the past, so that the applicable range is limited
As a result, when a welding bead shape simulator is used, if the model of the welding power source targeted by the heat source model HSM of the simulator is different from the model of the welding power source used in actual construction, the difference between the two There is a problem that the estimation accuracy of the welding bead shape is lowered due to different voltage / current control methods
In order to solve this problem, it is enough to customize the heat source model HSM for all models of welding power sources. However, since the heat source model HSM is composed of complicated calculation formulas, items related to welding power sources are differentiated and customized. The huge working hours are extremely unrealistic

Method used

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  • Welding bead shapes emulation device of arc-welding
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Embodiment approach 1

[0075] FIG. 1 is a block diagram showing an arc welding bead shape simulation device according to Embodiment 1 of the present invention. In this figure, the same reference numerals are assigned to the same blocks as those in FIG. 5 described above, and description thereof will be omitted. Next, different modules will be described with reference to this FIG. 1 .

[0076] The second heat source model HSM2 includes an arc load simulation unit and an input heat calculation unit. The welding power supply simulation module PSS is set independently. Therefore, the second heat source model HSM2 sets the simulation conditions by the above-mentioned initial data sl1 for the heat source model, takes the instantaneous welding current signal io from the welding power supply simulation module PSS described below as input, and calculates the instantaneous welding current signal io by the arc load simulation unit. The welding voltage signal vo is output to the welding power supply analog mo...

Embodiment approach 2

[0091] 4 is a block diagram of an arc welding bead shape simulation device according to Embodiment 2 of the present invention. In this figure, the same symbols are assigned to the same blocks as those in FIG. 1 described above, and descriptions thereof will be omitted. Hereinafter, different modules will be described with reference to this figure.

[0092] The welding simulation power supply simulation module database DB2 is newly incorporated in the second welding power supply simulation module PSS2. The welding power source simulation module database DB2 stores data of a power source main circuit simulation module OPC and a current control block CC corresponding to welding power sources of various types. When the model of the welding power source is selected by the input / output device IOD, the welding power source selection signal s2 is input from the management module MB to the above-mentioned welding power source simulation module database DB2. The welding power supply s...

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Abstract

The invention provides a welding channel emulate device of electric arc welding, which utilizes heat conduction computation to speculate the welding channel shape of electric arc welding and can perform the simulation corresponding to the type of welding power source used in construction. The device includes: a heat source model HSM which computes the input heat from electric arc to a melting pool, a melting pool model MPM which computes the shape of the melting pool via the heat conduction computation according to the input heat qc in order to speculate the shape of welding channel, and a welding power source simulation module PSS which modularizes the welding power source outputting transient welding current; in addition, the heat source model HSM comprises: an electric arc load simulation part which modularizes the electric arc load and takes the transient welding current io as input, takes transient welding voltage vo as output; the transient welding voltage vo is input to the welding power source simulation module PSS as a feedback signal, meanwhile, the input heat qc is computed in accordance with the transient welding current io and the transient welding voltage vo.

Description

technical field [0001] The invention relates to a bead shape simulation device for arc welding, which is used for inferring the bead shape of arc welding through simulation. Background technique [0002] The quality of arc welding depends on the shape of the weld bead obtained from the welding result (weld bead width, pile height, penetration depth, presence or absence of defects, etc.). With the improvement of welding power control technology, welding stability is also improving, but the selection of welding conditions that can obtain the best bead shape still depends on the experience of skilled operators, which is the actual situation. However, even for skilled operators, when using unused welding materials for welding or welding new materials, the selection of welding conditions has to rely on trial and error. Therefore, the securing of space for test welding and the welding workpieces, welding materials, time, etc. for test welding have to be eliminated, and this has b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/095G06F17/50
Inventor 惠良哲生
Owner DAIHEN CORP
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