Carbide alloy welding wire or welding rod as well as manufacturing method and application thereof

Abstract

The invention relates to a hard alloy welding wire or welding rod. The welding wire or welding rod is prepared from the following compositions: tungsten carbide, titanium carbide or tungsten carbide and titanium carbide is used as a hard phase; one, two or three of iron, nickel and cobalt are used as a bonding phase; specific compositions have the following weight percentage accounting for the gross weight: 30 to 85 percent of the hard phase and 15 to 70 percent of the bonding phase; and in the mixture ratio of the hard phase or the bonding phase, the hard phase or the bonding phase comprises one or more of chrome, manganese, copper, molybdenum, vanadium, tantalum, niobium and carbide accounting for less than 15 percent of the gross weight and C with proper amount is added. The hard alloy welding wire or welding rod has the advantages of high rigidity, high wearing resistance, impact resistance, corrosion resistance, easy welding, low cost, simple operation and wide application range.

Description

Technical field [0001] The invention relates to a new type of welding material, in particular to a hard alloy welding wire or electrode. It selects hard alloy components, and the welding spot has high hardness, high wear resistance, impact resistance or high hardness, high wear resistance and impact resistance. , Corrosion-resistant hard alloy performance. Background technique [0002] There are many kinds of welding rods currently available on the market, but they can be summed up: ordinary steel and cast iron welding rods, including stainless steel welding rods; copper, aluminum, silver and their alloy welding rods; cast WC welding rods, namely lite welding rods; 938 and other wear-resistant electrodes welding rod. The first two kinds of welding rods have low welding point hardness and are not wear-resistant. Although the hardness of the latter two electrodes can reach HRA80-83° (equivalent to HRC60-63°), the cast WC is made of carbon steel as the binder phase, and its binding ...

AI Technical Summary

Problems solved by technology

The first two electrodes have low solder joint hardness and are not wear-resistant

Although the hardness of the latter two electrodes can reach HRA80-83° (equivalent to HRC60-63°), cast WC uses carbon steel as the bonding phase, and its bonding force is not ideal, and the bonding phase is easy to wear, resulting in hard Phase shedding, accelerated wear

The proportion of hard phase in the wear-resistant electrode is very small, less than 20%, so the wear resistance is not ideal, and it still cannot meet the use requirements

Nowadays, many people use the method of cemented carbide inserts to insert and weld the alloy block on the substrate, but the process is complicated, the cost is high, the combination is not strong, and the phenomenon of block loss often occurs

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