Method for producing a steel component provided with a metallic coating providing protection against corrosion

Method for producing a steel component provided with a metallic coating providing protection against corrosion

  • CN 105,531,404 A
  • Filed: 07/15/2014
  • Published: 04/27/2016
  • Est. Priority Date: 09/13/2013
  • Status: Active Application
First Claim
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1. , for the manufacture of the method for steel beam column of corrosion protective layer with metal, comprise following operation steps;

  • A) provide a kind of flat product be made up of the steel that can harden by quenching in thermoforming process, described steel have the yield strength of 150-1100MPa and the tensile strength of 300-1200MPa,B) described flat product electrolysis applies the corrosion protective layer be made up of zinc;

    described corrosion protective layer is than zinc only containing inevitable impurity;

    wherein;

    described coating is implemented by this way;

    namely;

    the corrosion protective layer of electrolytic deposition have be less than 5 μ

    m, preferably within the scope of 1-4 μ

    m, particularly preferably in the average layer thickness within the scope of 2-4 μ

    mC) slab that the described flat product by coating is formed is heated to the slab temperature being at least 800 DEG C;

    D) in shaping jig, described slab is shaped to steel beam column, andE) by being begun to cool down by described steel beam column and make described steel beam column harden being suitable under the state forming quenched and tempered organization'"'"'s structure or sclerotic tissue structure residing temperature, the rate of cooling of described cooling is for forming quenched and tempered organization'"'"'s structure or sclerotic tissue structure is enough.

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