| 摘要 |
PURPOSE:The titled composition, containing a vehicle and zinc flakes in a specific proportion, capable of giving improved weldability to a steel plate by applying to the steel plate before the working and welding, particularly gas shielding welding, and useful for large-sized steel structures, e.g. ships and plants. CONSTITUTION:A composition obtained by incorporating (A) 5-10wt%, based on the dry weight, vehicle, e.g. a partial hydrolyzate condensate to an alkyl silicate of the formula Si(OR)4 (R is ethyl, butyl or cellosolve, etc.) with (B) 15-60wt% zinc flakes, preferably containing 3wt% organic pulverizing agent, and having <=100mu maximum length, 1.5-30mu average major axis, <=5mu average thickness and >=3 aspect ratio.
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