The electrodes OZL - 17U
WELDING ELECTRODES OZL-17U (diameter 3; 4; 5 mm)
LEGEND: OZL-17U - Ø - WA
E-400-B20
TECHNICAL REQUIREMENTS: GOST 9466-75, TU BY 100034500.030-2011
COATING: main
PURPOSE:
For welding equipment and structures of 06HN28MDT corrosion resistant alloys, and steel 03HN28MDT 03H21N21M4GB mark, preferably up to 12 mm thick in working environments of sulfuric and phosphoric acids with impurities of fluoride. In all spatial positions except the vertical "top-down" at a constant current of opposite polarity.
CHARACTERISTICS Electrodes:
|
arcing |
sustainable |
|
splashing degree |
small |
|
formation of the joint |
a good |
|
Separation of the slag crust |
satisfactory |
|
deposition rate (in the lower position of the weld) |
12.0 - 14.0 g / Ah |
|
deposition rate (electrode diameter 4.0 mm) |
1,7-2,0 kg / h |
|
Electrode consumption per 1 kg of weld metal |
1.8 kg |
Typical mechanical properties of weld metal (at 20 ° C):
|
Tensile strength, MPa |
Relative extension, % |
Impact toughness J / cm2 |
Type of heat treatment (t / a) |
|
540 |
26 |
110 |
Without t / o |
Chemical composition of deposited metal:
|
Element content, weight% |
|||||||||
|
Carbon |
Silicon |
Chromium |
Nickel |
Manganese |
Sulfur |
Phosphorus |
Molybdenum |
Copper |
Niobium |
|
<= 0.04 |
<= 0.7 |
21-25 |
25-29 |
1.5-2.5 |
<= 0.02 |
<= 0.03 |
2,6-4,3 |
2.5-3.5 |
0.4-0.5 |
DIRECTIONS FOR USE:
The weld metal is resistant to intergranular corrosion.
In case of exceeding the permissible moisture content in the coating (0.7%) before use further electrodes are calcined at a temperature of 280 - 300 ° C for 40-60 minutes.
WELDING MODES:
|
Electrode diameter mm |
Welding current, A |
||
|
joint position |
|||
|
Underwear |
vertical |
ceiling |
|
|
3 |
90-100 |
80-100 |
80-100 |
|
4 |
130-160 |
120-150 |
120-150 |
|
5 |
180-220 |
170-200 |
- |
|
= / + / |