1) uses in spurting the portable cover furnace annealing unit (solid) to drench and the electrolysis degreasing trough with alkalinity degreaser FM-T1011, the silicic acid salt content is high, the conductivity is high, decontamination ability. After the processing, the steel belt surface has a silicic acid salt deposit, can prevent the steel belt effectively after covering the type annealing the cementation.