WT-H250 СТП 04-020:2018

TUU 28.7-31749248.002-2002 (suspended) EN 14700/ T Fe1 DIN 8555/ MF 1-GF-250-P (suspended)

Welding process: О – open arc G – in shielding gas S – under the flux	Wire diameter, mm	Recommended shielding gases and fluxes
О	1,6-3,0	-
G	1,2-2,4	С1 (100% СО2), М21 (18% СО2 + 82% Ar)
S	1,6-3,2	АН-348А, АН-60, АН-20

General characteristics

It is designed for automatic as well as semi-automatic open-arc or gas-shielded arc or submerged arc restoration and hard-facing of parts made of carbon and low-alloyed steels operating under conditions of metal-to-metal friction at room and elevated temperatures.

Application

Typical applications are as follows: mechanized hard-facing of thrust bearing for carriages of railroad cars, rollers of running gear for tracked vehicles, gearwheels, rollers for roller conveyors, crane wheels, bandages for tram wheels, brake pulleys and shaft seating places etc.

Weldability

The Formation of the weld bead	good
Separation of Slag	good
Deposition Rate, kg/h	4-13
Addiction Weld metal Cracking	low
Consumption per 1 kg of wire Weld metal, kg	1.05-1.2
Weld metal Hardness (HRC for 3rd-4th layer, unless otherwise stated)	after surfacing HB 200-HB 280

Technological features

The wire has found wide application at railroad car repairing yards and machine engineering plants. It is recommended for metal arc deposition at direct current of reverse polarity - DC ( +).

Properties of the weld metal

Deposit composition (Weld metal), %

C	Mn	Si	Ti	S	P
0.08	0.8	0.5	0.4	0.012	0.017

_

Recommended Surfacing Modes

Wire diameter, mm	Welding process:	Current, A	Voltage, V	Surfacing rate, m/h	Gas consumption l/min
1,2	G	100 - 260	22 - 29	8 - 13	6 - 14
1,6	O	140 - 240	24 - 28	10 - 15
	G	120 - 320	23 - 32	10 - 15	7 - 15
	S	140 - 220	25 - 29	10 - 15
2,0	O	160 - 260	25 - 28	12 - 18
	G	150 - 400	24 - 34	12 - 18	8 - 16
	S	160 - 260	25 - 30	12 - 18
2,4	O	200 - 320	26 - 29	15 - 20
	G	180 - 450	25 - 36	15 - 20	10 - 18
	S	200 - 300	26 - 31	15 - 20
2,8	O	240 - 360	26 - 30	18 - 23
	S	240 - 360	28 - 32	18 - 23
3,0	O	260 - 400	26 - 30	18 - 23
	S	260 - 380	29 - 33	18 - 23
3,6	S	320 - 450	30 - 34	20 - 25

Accordance with the analogues («TM.ESAB», «TM.BÖHLER», «TM.WELDING ALLOYS»)

Type of «TM.BÖHLER»: SK-250-G UTR DUR 250

Delivery type (More)

Wire diameter, mm	Cardboard barrel			Molded skeins of frameless type		Frame drum (B)	Coil (S), (BS)
				Hank in the corrugation box	Metallic barrel
	To 100 kg	To 150 kg	To 300 kg	To 30 kg	To 70 kg	To 25 kg	To 15 kg
1.2	X	X	X	X	X	X	X
1.6	X	X	X	X	X	X	X
2.0	X	X	X	X	X	X	X
2.4	X	X	X	X	X	X	X
2.8	X	X	X	X	X	X
3.0	X	X	X	X	X	X
3.2	X	X	X	X	X	X

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