Pre-treatment method of aluminum alloy surface treatment and alkaline etching solution adopted by pre-treatment method

Pre-treatment method of aluminum alloy surface treatment and alkaline etching solution adopted by pre-treatment method

  • CN 104,005,038 A
  • Filed: 05/22/2014
  • Published: 08/27/2014
  • Est. Priority Date: 05/22/2014
  • Status: Active Application
First Claim
Patent Images

1. the pre-treating process of aluminum alloy surface in processing, is placed in successively ethanol by aluminium alloy and soaks, takes out after washing, is placed in alkaline etching solution and processes, take out after washing, ultrasonic cleaning and dry;

  • It is characterized in that;

    described alkaline etching solution is comprised of the component of following concentration;

    sodium hydroxide 2~

    6g/L, sodium phosphate 20~

    60g/L, sodium carbonate 20~

    60g/L, tripoly phosphate sodium STPP 10~

    30g/L, water glass 5~

    25g/L, OP emulsifying agent 1~

    3ml/L.

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