UTP HydroCav - UTP Schweissmaterial

Standards :
EN 14700 : E Z Ni2
180
UTP 5520 Co
Basic coated stick electrode on
NiCrCoMoTiAl base for hardfacings
on hot working tools with extreme
thermal load, age-hardenable
Application field
UTP 5520 Co is particularly suited for wear resisting cladding on working surfaces of hot working tools
subject to thermal load, such as e.g. forging saddles, forging jaws, forging dies, hot piercing plugs, hot press
rams, hot cutting knives and trimming tools.
Welding properties
UTP 5520 Co has good welding properties, a good bath control, a homogeneous bead appearance and easily
slag removal. The weld deposit is heat resistant, scale resistant, resistant against thermal shock and wear
resistant against compression, impact and abrasion at elevated temperatures.
Hardness of the pure weld metal
untreated approx. 200 HB
workhardened approx. 450 HB
after age-hardening approx. 380 HB
Weld metal analysis in %
C
0,05
Welding instruction
Clean welding area thoroughly. Preheat tools to 350 –400° C, temperature should be maintained during the
welding process. Slow cooling in oven. Hold stick electrode as vertically as possible and with a short arc.
Weld buffer layers with UTP 7015 Mo and final layers with UTP 700 / UTP 7000, if necessary. Select lowest
possible amperage, in order to reduce dilution with the base metal. Re-dry stick electrodes that have got
damp for 2 h / 300° C.
Current type DC (+)
Availability / Current adjustment
Stick electrodes
Amperage
Cr
19,0
* available on request
Ø mm x L
A
Ni
balance
Mo
4,5
3,2 x 350*
70 – 110
Co
12,0
Ti
3,0
Al
1,0
Welding positions
4,0 x 350*
110 – 140
5,0 x 450*
140 – 190
W
1,0
PA PC