UNJ-10/25/50
saws the strip flash welding machine explanation
First,
main engineering data
Parameter
model
Fixed
Capacity
(KVA)
Input
Voltage
(V)
Input
Power
source
(A)
The
rated load continues to lead
(%)
Adjustment
progression
Output
idling voltage
(V)
The
welding saws the strip
The
width is biggest
(mm)
Welding
Saws
the strip thickness
(mm)
UNJ-10
10
380
26.3
20
8
50
0.4-1.2
UNJ-25
25
380
39.5
20
8
125
0.4-1.2
UNJ-50
50
380
78.9
20
8
150
0.4-1.2
Second,
structure and principle of work
This welding machine by the rack, the machine part, the electric
department classifies is composed.
1. Rack: The rack becomes by the angle steel and the steel plate
welding, the internal installation transformer, the contact
device and so on the complete electricity are partial, outside
has the side gate which shell and may open favor the overhaul.
2. Machine part: By the shell, saw slice clamps the
organization, the welding forging and pressing handle, skids and
so on is composed for the organization.
3. Electricity partial: By the transformer, welds the switch,
the tempering button, the exchange contact device and so on is
composed.
Third,
principle of work
This machine for the flash welding machine, the flash welding
merit is the metal and the alloy scope which may weld extremely
widespread, certain weldments are very difficult with other
welding crafts the alloy which welds cannot even weld, may weld
with the flash welding.
The flash welding has two methods: 1. Continual flash welding.
2. Preheating flash welding.
1. Continual flash welding: Clamps the weldment, moves the jig
gently contacts when two weldments, namely opens causes the
circular telegram, heats up and has liquid metal the spark Liang
which the contact point heats up forms which demolishes to
spray, forms the continual flash, when the flash heats up to the
suitable temperature, moves the jig suddenly to accelerate,
causes the weldment end surface by the very tremendous pressure
mutually to extrude, the rupturing current, the adjoining plane
place mutually crystallizes immediately, but forms the reliable
attachment, this stage for forging and pressing, the flash heats
up with forging and pressing pressurizes is the flash welding
main stage, the preheating flash is the butt welding in front of
the continual flash first preheating.
Fourth,
application method
1. The saw strip which will weld (or steel belt) the beginnings
and ends will cut neat, then will saw the strip to put in the
welding machine in two electrodes clamp, will attach to Qi Ding
is tightening the handle together. First clamps saws the strip,
then moves welds the handle, presses down welds the button is
the transformer circular telegram, by now sawed the strip to
start the flash to melt, when the flash heated up to the
suitable temperature, moved the handle suddenly accelerated,
caused by the very tremendous pressure to saw the strip mutually
to extrude, the rupturing current, by now welded the area
adjoining plane place alternately to crystallize immediately,
the welding finished.
2. Completes after the welding, the pine opens contracts the
installment, puts aside two pole plates about the about 2.5
centimeters, causes the crater to occupy two electrodes middle
positions, then contracts, presses down the tempering button,
(according to tempering button when must pay attention to this
welding machine to be supposed to use pulse interrupted
tempering method, after namely presses down button pine to open
immediately, then continuously interrupted presses down button)
simultaneously to observe saws the strip crater place, assumes
brown (temperature approximately when 580 ℃ -630 ℃) stops
the tempering, the tempering not to have darkly to cause to saw
the strip to present brightly is red, if has the bright red
explanation tempering hyperpyrexia, after must cause to saw
strip cooling to carry on the second tempering again, Otherwise
cannot use. (16-30, when welding may 1-7 grade, when tempering
must dial to 8 grades.)
Fifth,
low-carbon steel plate flash welding allowance and time
reference value
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