eur op eanexhibitionofcreati vityandinnovation - Europe Direct Iasi

EUROINVENT 2013
16.3.
ELECTRODE WITH CORE FROM ALLOY 83%
Title EN
FE/17%CR
Lect. Dr. Eng. Radu ŞTEFĂNOIU, Prof. Dr. Eng. Victor
GEANTĂ, Dr. Eng. Horia BINCHICIU, Prof. Dr. Eng.
Authors
Ionelia VOICULESCU, Dr. Eng. Aurelia BINCHICIU, Eng.
Emilia BINCHICIU
Institution SC SUDOTIM AS SRL Timişoara
Patent no. RO 125834/30.01.2013
This invention refers to a basic layer type fluoro – calcium with
35% adding of metallic powders, destined to covering by extrusion
of some metallic bars realized from alloys 83%Fe and 17%Cr,
resulting thus electrodes with increased deposition efficiency that
can be used for manual electric welding. The weld deposit obtained
is an alloy type with 71%Fe, 25%Cr, 2,5%C, 1%Mo, 0,5%V and
micro-alloyed with lanthanides with austenitic microstructure, with
high resistance at abrasion combined with corrosion at high
temperatures, and associated hardness in the domain of 45 – 60
HRC. The coating of electrode, according to the invention, consists
Description
in powder mixture of 30 – 33% marble, 20 – 22% fluorine, 6 – 8%
EN
rutile, 0.5 – 1.5% cat silver, 2 – 4%FeSi 45, 1 – 2%FeMn45, 14 –
18%FeCr60, 8 – 12% metallic Cr, 5 – 7% colloidal graphite, 1 –
2% lanthanide, 1 – 2% carboximetilcelulose, having maximum
granulation of 0.3 mm, being initially mixed in dry state, and then
mixed in wet state, with adding an amount of liquid sodium silicate
of 18 – 20% from the total powder mass.
APPLICABILITY DOMAIN: Deposition by manual electric
welding of some layers with high resistance at abrasion combined
with corrosion at high temperatures, and associated hardness in the
domain of 45 – 60 HRC.
6. Mechanical Engineering - Metallurgy
Class no.
7. Buildings and Materials
NATIONAL
130