YATO YT-81352, Руководство пользователя

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OPERATION CONTROL AND CONNECTORS
z
Lifting arc: take the electrode to scrape the workpiece for striking arc. But it may
cause the arc scratch, so must to lift arc in the groove.
§4.4.2 Manipulation of electrode
In MMA welding, there are three motions to being matched in the end of
electrode: the electrode moving to the molten pool along axes; the electrode swing
right and left; the electrode moving along welding way.
The operator can choose the manipulation of electrode based on welding joint
sharp, welding position, electrode spec, welding current and operation skill, etc.
The details please refer to
lj
Welding Dictionary
NJ
P69, Volume 1 of Edition 2.
§
4.4 Welding parameters
§4.4.1 Joint form in MMA
In MMA welding, the common basic joint form: butt joint, lap joint, corner joint
& T joint.
§4.4.2 Electrode selection
The electrode diameter selection is based on the workpiece thickness, welding
position, joint form, welding layer, etc. Please refer to the following table.
The welding current reference for different electrode diameter
Electrode
diameter/mm
1.6 2.0 2.5 3.2
Welding current/A 25
̚
40 40
̚
60 50
̚
80 100
̚
130
The relation between the welding current(I)’ factor(K) & electrode diameter(d) (I
˙
K
×
d: Carbon electrode)
Electrode
diameter/mm
1.6
2
̚
2.5
3.2
Factor/K
20
̚
25 25
̚
30 30
̚
40
Notice: the above parameters originate from
lj
Welding Dictionary
NJ
P66
̚
P67, Volume
butt joint lap joint corner joint T joint
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