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Water vapour plasma burner and method of wear detection and process control in the case of such a water vapour plasma burner

A technology of plasma welding and detection method, applied in the direction of plasma welding equipment, plasma, welding equipment, etc., can solve the problems of not considering the heat of the cathode, damage, affecting the temperature control of the evaporator, etc., to achieve stability and quality without affecting, Extends service life and eliminates the effects of overheating

Inactive Publication Date: 2009-08-26
FRONIUS INTERNATIONAL GMBH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Here, disadvantageously, the heat introduced into the cathode via the arc may affect the temperature control of the evaporator in an unpredictable manner, since the heat introduced by the cathode is not taken into account when controlling the temperature of the evaporator
Therefore, the torch may overheat and be damaged

Method used

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  • Water vapour plasma burner and method of wear detection and process control in the case of such a water vapour plasma burner
  • Water vapour plasma burner and method of wear detection and process control in the case of such a water vapour plasma burner
  • Water vapour plasma burner and method of wear detection and process control in the case of such a water vapour plasma burner

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Embodiment Construction

[0032] First, it is to be noted that the same components in the embodiments are denoted by the same reference numerals.

[0033] figure 1 Shown is a steam cutting device 1 with a base unit 2 for performing a steam cutting process. The base unit 2 comprises a current source 3 , a control unit 4 and a blocking element 5 assigned to the control unit 4 . The blocking element 5 is connected to the reservoir 6 and the steam plasma torch 7 via a feed line 8 so that the liquid medium or liquid 9 in the reservoir 6 can be supplied to the steam plasma torch 7 . The water vapor plasma torch 7 is supplied with electrical energy via lines 10 , 11 connected to a current source 3 .

[0034] In order to cool the water vapor plasma torch 7, the torch is connected via a cooling circuit 12 to a liquid reservoir 14, between which a flow controller 13 may be interposed. When the welding torch 7 or the steam cutting device 1 is put into operation, the control unit 4 can activate the cooling circ...

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PUM

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Abstract

The invention relates to a water vapour plasma burner (7) for cutting a workpiece (21), comprising a feed line (8) for a liquid (9), a heating device (22) and an evaporator (23) for forming a gas (20) from the liquid (9), a cathode (24) detachably connected to a movably mounted piston rod (25) and a nozzle (26) with an outlet opening (27) for the gas (20), and relates to a method of wear detection and process control in the case of such a water vapour plasma burner (7). To create such a water vapour plasma burner (7) with detection of worn parts, at least one temperature sensor (28) is arranged in the piston rod (25), said sensor being connected to a control device (4), so that the recorded temperature values can be used as a basis for ascertaining wear of the cathode (24) and the nozzle (26) and so that the control of a water vapour plasma cutting process can be influenced.

Description

technical field [0001] The invention relates to a water vapor plasma torch for cutting workpieces, comprising a liquid feed line; a heating device; a vaporizer for forming a gas from a liquid; a cathode detachably connected to a movably mounted piston rod; Nozzle for the exit hole of the gas. [0002] The invention further relates to a method for detecting the wear of the cathode of a water vapor plasma torch during and after the cutting process, wherein said cathode is detachably connected to a piston rod, the heat generated by the arc being thermally coupled to the piston connected to the cathode In the rod, so that when the cathode temperature changes, the temperature on the piston rod also changes. [0003] Furthermore, the invention relates to a method for detecting the wear of the anode of a water vapor plasma torch designed as a nozzle with an outlet hole through which the gas formed by evaporating a liquid fed via a feed line by means of a heating device and an evapor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K10/00H05H1/36
CPCB23K10/006H05H2001/3442H05H2001/3489H05H2001/3494H05H1/34B23K37/00H05H1/3442H05H1/3489H05H1/3494
Inventor 沃尔特·米特休梅尔黑里贝特·潘泽
Owner FRONIUS INTERNATIONAL GMBH
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