The renovation process of high flux metal dust pipe

The renovation process of high flux metal dust pipe

  • CN 102,716,617 B
  • Filed: 05/17/2012
  • Issued: 05/11/2016
  • Est. Priority Date: 05/17/2012
  • Status: Active Grant
First Claim
Patent Images

1. a renovation process for high flux metal dust pipe, is characterized in that processing step is:

  • The first step;

    first the outward appearance of the metal dust pipe just having disassembled is checked, the powder tube that has crackle and/or pitting corrosion defect is rejected;

    Second step;

    the absorbent particles of metal dust tube-surface absorption is removed by the method for physics gas flow purging;

    The 3rd step;

    metal dust pipe is put in the ultrasonic bath that contains oiliness extractant, started ultrasonic and heater and process, 2~

    4 hours processing times;

    The 4th step;

    metal dust pipe is put in the ultrasonic bath that contains surfactant, started ultrasonic and heater and process, 0.5~

    1 hour processing time;

    The 5th step;

    metal dust pipe is put in the ultrasonic bath that contains saturated complexing agent EDTA and weak acid, started ultrasonic and heater and process, 1~

    2 hour processing time;

    The 6th step;

    with measuring the method test of water flux through the infiltration capacity of above-mentioned five step metal dust pipe after treatment, the metal dust pipe that infiltration capacity is qualified enters lower step program, the underproof metal dust pipe of infiltration capacity repeat to enter second step processing;

    The 7th step;

    after metal dust pipe being rinsed well with pure water, put into vacuum reduction stove and process.

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