Brass welding technology

Are you interested in the technology of brass welding? Supplier Avlob offers to buy brass rolls at a bargain price. The supplier guarantees the timely delivery of products to any address in Europe or abroad. Regular customers receive a discount discount. The price is the best in this segment.

Welding difficulties

The main difficulty is zinc burnout, as it begins to boil and at a temperature above 905 ° C and evaporate intensely. The vapor of zinc, oxidized in air, falls on the surrounding objects in the form of a white coating. In order to reduce the precipitation of ZnO oxide, brewing of defects in brass castings of the brands LMC-58−2 and LMCS-58−2-2, which contain 58% copper, 2% lead, 2% manganese, is carried out with OB-5 electrodes.

Electrodes

Cast or pressed brass bars of grades ЛК which are alloyed by silicon are used. Welding is recommended in semi-vertical or horizontal position with a direct current of reverse polarity for an electrode Ø 6 mm, with a current strength of 200 ÷ 225 A. In order to obtain welded metal close to the basic composition, use electrode rods of the same basic metal composition. On such rods a two-layer coating is applied. As the first coating layer, the thickness of which is from 0.2 to 0.3 mm, the following composition is used: manganese ore — 30%, ferromanganese — 15%, titanium concentrate — 30%, potassium sulphate 5%, chalk — 20% .

Fluxes

The use of flux allows the molten metal to be protected from oxidation. Fluxes are used in the form of a mixture of the following composition: sodium chloride — 12.5%, potassium chloride — 50%, charcoal — 2.5%, cryolite — 35%. Boric slag can also be used as a flux.

Delivery, price

Are you interested in the technology of brass welding? Buy brass rolls at an affordable price from the supplier Avgob today. The price is formed on the basis of European production standards. Supplier Avlob offers to buy brass rolls at the optimal price in bulk or at retail.