High-performance electrode for cast iron

Abstract

A high-performance electrode for cast iron is made from the following raw materials, by weight, 6-8 parts of sodium pyrophosphate, 2-4 parts of sodium hypophosphite, 6-8 parts of p-toluene sulfonic acid, 7-9 parts of fatty alcohol polyoxyethylene ether, 3.5-6 parts of triethanolamine, 7-10 parts of malic acid, 8-12 parts of dolomite, 2-5 parts of nickel, 4-7 parts of ferromanganese, 8-11 parts of medium carbon ferromanganese, 3-5 parts of copper powder, 8-11 parts of aluminum trifluoride, 3-6 parts of mica, 9-12 parts of diethylene glycol diethyl ether, 1-4 parts of MgO and 0.9-1.5 parts of antimony trioxide. The electrode for cast iron has the advantages that formation of weld joints is good, and smoke is small; meanwhile, metal surface tension can be reduced, the welding effect is further enhanced, and the quality of weld assemblies is well improved.

Description

technical field [0001] The invention relates to a cast iron welding rod. Background technique [0002] Cast iron is usually classified according to the distribution of carbon in cast iron, and generally can be divided into white cast iron, gray cast iron, nodular cast iron, vermicular graphite cast iron and malleable cast iron. Due to the high carbon content, uneven structure, low plasticity and poor weldability of cast iron, defects such as white spots, cracks and pores are easily produced during the welding process. Special attention should be paid to the selection of welding process and welding materials during welding. Welding cast iron is mainly controlled from three aspects: carbon control, stress relief, and structural adjustment. Due to high carbon content, uneven structure, low strength, and extremely poor plasticity, cast iron electrodes are materials with poor weldability, and cracks are easily generated during welding; the cooling rate after welding is extremely...

AI Technical Summary

Problems solved by technology

Due to high carbon content, uneven structure, low strength, and extremely poor plasticity, cast iron electrodes are materials with poor weldability, and cracks are easily generated during welding; the cooling rate after welding is extremely fast, and white structures are easily formed, resulting in difficulties in cutting.