Ronch Ronch Weld 315MAX, Руководство пользователя

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20
Defect
name
Caused reasons Prevent methods
Welding
seam
doesn’t
meet the
requirement
The groove angle is not proper
The root face and assembly gap is
not equal
Welding technics parameters are
unreasonable
The welder’s operation skill is lower Choosing the proper groove angle &
assembly gap, improve the assembly
quality
Choosing the proper welding
parameters
Improve the operation skill of welders
Undercut
Over current
Arc length is too long
The electrode angle is wrong
Manipulation of electrode is not
proper
Choosing the proper welding current
& speed
The arc can’t be drawn too long
The electrode angle should be proper
Manipulation of electrode should be
correct
Incomplete
penetration
The groove angle or gap is too small,
the root face is too big
Welding parameters are not
suitable, or the assembly is not good
The welder’s operation skill is lower
Correctly to choose and process the
groove size
Correctly to assemble and ensure
clearance
Choosing the suitable welding current
& speed
Improve the operation skill of welders
Incomplete
fusion
The welding thermal input is too low
The arc direction is lean
There are rust & dust on the side of
groove
The slag between the layers is not
cleared well
Correctly to choose the welding
parameters
Operation seriously
Enhance the clearness of layers
Blowhole
There are some dust like oil, rust or
water on the work piece surface and
groove
The coating of electrode is damped&
is not drying
Under current or over speed in the
welding
The arc is too long or lean burning,
the molten pool protection is not
good
Over current, the coating of
electrode falls off and lose
protection
Manipulation of electrode is not
proper
Clear out the dust around groove for
about 20
～
30mm
Strictly to dry the electrode according
to manual
Correctly to choose parameters and
to operate
Using the short arc operation
Welding operation in the field should
have anti-wind protection
Don’t use the invalid electrode