CERAMIC FLUX FOR AUTOMATIC WELDING AND DEPOSIT WELDING Russian patent published in 2013 - IPC B23K35/362 

FIELD: chemistry.

SUBSTANCE: invention can be used in automatic welding or deposit welding of articles made from heavily doped corrosion-resistant austenitic steels. The ceramic flux has components in the following ratio, pts.wt: aluminium oxide, added in form of alumina and/or electrocorundum 14-27, magnesium oxide 14-27, sodium oxide 0,1-4.0, potassium oxide 0.1-3.0, silicon oxide 14-23, calcium oxide 0.1-6.0, calcium fluoride 14-25, aluminium powder 0.1-2.5, zirconium oxide 0.1-9.0, chromium oxide 0.1-5.0, ferrochromium or chromium metal 0.1-4.0, ferromanganese or manganese metal 0.1-4.0, ferromolybdenum or molybdenum metal 0.1-4.0, sodium silicate - the balance.

EFFECT: ratio of silicon oxide content to total content of aluminium oxide and zirconium oxide is equal to 0,62-0,99, the ratio of silicon oxide content to total content of magnesium oxide and sodium oxide is equal to 0,7-0,99.