Stainless steel welding rod improving vertical welding process performance

Abstract

The invention provides a stainless steel welding rod improving vertical welding process performance. The stainless steel welding rod comprises a stainless steel core wire and a coating wrapping the surface of the stainless steel core wire, the coating is prepared from the following raw materials, in parts by weight, 30-40 parts of rutile, 3-8 parts of zircon quartz, 5-10 parts of feldspar, 10-18 parts of marble, 2-6 parts of fluorite, 2-8 parts of dolomite, 1-5 parts of magnesia, 1-5 parts of aluminum oxide, 5-10 parts of electrolytic manganese metal, 5-10 parts of chromium metal, 3-6 parts of ferrotitanium, 2-7 parts of iron powder, 1-2 parts of sodium alginate and 1-2 parts of microcrystalline cellulose. According to the stainless steel welding rod improving the vertical welding process performance, the excellent flat welding process performance of an acid coating stainless steel welding rod is reserved, meanwhile, by designing the coating of the welding rod, the welding rod melting rate is reduced, the slag forming number in unit time is reduced, the slag solidification rate is improved, vertical welding slag is stably solidified and does not flow downwards, and the vertical welding operability of the stainless steel welding rod is improved.

Description

technical field

[0001] The invention belongs to the technical field of welding materials, and in particular relates to a stainless steel welding rod for improving the technical performance of vertical welding. Background technique

[0002] Because the resistivity of the stainless steel welding core used in the stainless steel electrode is 6-7 times larger than that of the carbon steel welding core, the resistivity is high, and the thermal conductivity is only 1 / 3 of the carbon steel welding core, and the thermal conductivity is poor. When welding with traditional stainless steel electrodes, under the dual effects of strong resistance heat and low thermal conductivity, the temperature of the welding core is high, the heating is severe, the melting speed of the electrode is fast, and the rate of slag produced by welding is correspondingly accelerated. When the stainless steel electrode is welded vertically, the molten welding slag will not be solidified in the future, and the ...