Preparation method of scrap steel nodular cast iron

Preparation method of scrap steel nodular cast iron

  • CN 102,994,684 A
  • Filed: 11/28/2012
  • Published: 03/27/2013
  • Est. Priority Date: 11/28/2012
  • Status: Active Application
First Claim
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1. a steel scrap spheroidal graphite cast iron compound method is characterized in that, comprises the steps:

  • 1) is that the steel scrap of 30-90%, the foundry returns of 10-70% join in the process furnace with weight percent content, and then adds carburelant and ferrosilicon by the per-cent of above-mentioned gross weight;

    2) after furnace temperature rises to 1500 ℃

    -1600 ℃

    , add nodulizing agent and nucleating agent;

    3) the nodularization time in the above-mentioned steps is 35-60 second, then begins casting.

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