Phosphating process skim - washing - rust - washing - and in - washing - Surface adjustment - phosphate - washing - passive - dry - processing (a) with EM-968T efficient degreasing agent, the product is a yellow-white powder. 1 bath preparation: tank water heated to about 40 degrees, which is 30 kg / ton degreaser, stirring to dissolve it. 2, process management free alkalinity: 12-14 point temperature: 50-60 degrees Time: 5-10 min spray pressure: 0.1-0.12MPA (b) of room temperature water wash (three) with EM-968CX effects rust removal agent. (. Std, the product as a white solid powder) 1 bath preparation: add water tank, plus phosphate 200 kg / ton, and then press 15 kg / ton of powder. 2, cleaning temperature: general oil and light rust at ambient temperature, if the dry weight of crude oil and rust in heating 40-60 degrees. (D) washing with water (five) and in: soda ash 15-30 kg / ton, add some water to wash. (Six) then wash with water (seven) EM-968L surface modifier (The product is white powder). After work surfaces before phosphating adjusted for better results phosphide, advantages: fine crystalline phosphate coating, phosphate coating formation time is shortened, bath reduce consumption and to improve phosphate coating antirust performance. 1, process management: PH value: 7.5-9.0 Temperature: room temperature Time: 2 minutes spray pressure: 0.08MPA (eight) EM-968L (A, B, C) zinc phosphate concentrate agent. 1, bath preparation: the tank before adding 3/4 volume of water, by 25-30 kg / ton, the A agent is added, adding aqueous sodium hydroxide 0.7 kg / ton, confirm acidity, coupled by 0.4 kg / t C agent. 2, process management: Total acidity: 12-14 points free acidity: 0.5-1.0 point accelerator: 1.0-2.5 ml temperature: between 30-40 degrees spray pressure: 0.08-0.16MPA 3, add the tank after work agent B, C agent, PH value control between 3-3.5. (Nine) and then wash with water at room temperature. (X) passivation agent: white yellow deactivator 5-10 kg / ton, water tank with process management. PH: 3.4-4.5 Temperature: 30-40 degrees Time:? 0.5 min (k) dry before handling