SAW (submerged arc) welding equipment for automatic welding and hard-facing of seat rings on valve body, wedge, flange, parts and assemblies DN 2�-24� (50-600 mm), with rotating table
Model
YH-2F
1. Models YH used for following:
- for welding and hard-facing of seat rings (sealing surfaces) on valve body, wedge, flange, parts and assemblies;
- for SAW (submerged arc) welding;
- for automatic welding.
2. You shall have after welding (hard-facing):
Seat rings (sealing surfaces) is stainless steel;
Hardness of weld pad is 27 up to 42 HRC (Rockwell Hardness Scale C);
Chromium is minimum 14-19 %.
Technical characteristic
Size of valve (DN)
2�-24�
(50-600 mm)
Maximal weight of welding workpiece
1500 kg
Process of welding
automatic
Circuit voltage for 50 Hz
380 V
Welding current
500 ampere
Control range of welding current
50
up to
500 ampere
Input power no more
36 kW
Open-circuit voltage no more
85 V
Diameter of electrode wire
2, 3, 4 mm
Feed speed of electrode wire
50
up to
350 meter/hour
Amplitude of oscillation
0
up to
50 mm
Frequency of oscillation
6 � 60 oscillation per minute
Vertical step of automatic welder
900 mm
Speed of moving of chariot
560 millimeter per minute
Frequency of rotation of table
0,025
up to
2,5 rpm
Method of defense of welding arc
flux
Ambient temperature
+ 1
º
� up to + 35º�
3. SAW welding equipment included:
- Rotator;
- Rotary column with console;
- Underslung automatic welder for SAW (submerged arc) welding;
- Welding thyristor apparatus;
- Universal coordinate adaptation for installation and centering of valve body and wedge which need to weld;
- Control panel;
- Complete set of replaceable SAW (submerged arc) tips for hard-facing of valve body and wedge;
- Complete set of power cables and control cables.
