COATED ELECTRODE

• Main Authors: UMEKI MASAO, KOSHIO TAKESHI
• Format: Patent
• Language: English
• Published: 12.09.1986
• Subjects: CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM

PURPOSE:To improve the bindability and flexibility of a coating material and to improve rod burn resistance and the efficiency of a welding operation by incorporating a specific ratio of sepiolite having a specific grain size and weight ratio into the coating material for a non-low hydrogen type arc welding electrode and adjusting the ratio of the org. material contained therein. CONSTITUTION:The sepiolite having <=105mu grain size and >=85wt% ratio is incorporated at 0.5-5.0wt% into the coating material for the non-low hydrogen type coated electrode. The org. binder material prepd. by incorporating an alkaline soln. and protein, etc. into water glass is further incorporated at 0.3-3.5% therein. The fibrous crystal structure of the sepiolite increases the viscosity of the binder and improves remarkably the flexibility thereof. The heat radiation is made active by the dehydration of the water of crystallization of the sepiolite and the rod burn resistance is improved. The disadvantage in the welding workability of the non-low hydrogen type arc welding rod contg. hydrogen at a higher ratio is thus overcome and the efficiency of the welding operation is improved.