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This instruction manual describes the operation and maintenance of DAIHEN TIG Welding Torch. Before using
your torch, carefully read and understand the entire contents of this manual so as to handle and operate the torch
properly and safely. Before operating the torch, be sure to read OPERATION.
Note
1 : The contents of this instruction manual are subject to change without prior notice.
2 : This instruction manual has been prepared and printed properly and correctly to the best of our knowledge.
Errors and omissions shall be excepted, and in any event, we shall not be held responsible therefore.
3 : This instruction manual shall not be reproduced in whole or in part, in any form or by any means whatsoever
without prior permission.
Characteristics
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In an arc welding robot, welding torch may contact a workpiece or jig, deforming the welding torch or
damaging the robot main unit. To prevent such accident in case external force exceeding a specified
value is applied to the tip (nozzle) of the torch, a shock sensor is incorporated in this welding torch so
as to clear the nozzle by external force and output external force detection signal while the nozzle is
being cleared, thereby enabling the robot main unit to stop immediately.
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Double collet is used for providing high electrode holding force and stabilized feeding.
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Rear collet body assembly can be separated from the torch main unit. To reduce the electrode
replacement time, prepare two or more rear collet body assemblies equipped with new electrodes.
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Wire extension can be easily set when an option electrode adjusting gauge is used.
Operation
①
Specifications
This torch is used for automatic TIG welding with alternating current and direct current.
Table 1.1 Specifications
Type
MWX-2001
MWXC-2001
MWX-3501
MWXC-3501
Welding method
TIG welding
DC (positive
electrode)
200A
350A
Max. applicable
current
AC
160A
300A
Duty cycle
50%
100%
Gas in use
Argon gas
Materials of electrode
Cerium tungsten electrode
(Thoriated tungsten, pure tungsten)
Electrode in use
(φ0.5)､(φ1.0)､(φ1.6)､
(φ2.0)､φ2.4､(φ3.0)､
(φ3.2)､(φ4.0)
(φ0.5)､(φ1.0)､(φ1.6)､
(φ2.0)､(φ2.4)､(φ3.0)､
φ3.2
φ3.2
φ3.2
φ3.2､(φ4.0)
Cooling method
Air cooled type
Water cooled type
Torch shape
Offset type
Angle type
Offset type
Angle type
Applicable cable (cable length)
L7623E(6m)
､
L7623J(10m)
L7633E(6m)
､
L7633J(10m)
Shock sensor
Built-in type
Note: 1. Options need to be purchased for the electrode sizes in parenthesis.
For details, see Chapter 13.
2. When using MWX-3501 and MWXC-3501 water cooled type torch, water pump (PU301, PU202) need
to be purchased in addition to this torch.
3. Power cable hose need to be purchased. For details, see Chapter 13.
