Filler metal composition and method for overlaying low NOx power boiler tubes

Filler metal composition and method for overlaying low NOx power boiler tubes

  • CN 101,583,731 B
  • Filed: 11/20/2007
  • Issued: 08/13/2014
  • Est. Priority Date: 11/21/2006
  • Status: Active Grant
First Claim
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1. one kind is suitable as the alloy of overlay cladding, this overlay cladding is for the boi1er tube in low NOx type coal firing boiler, described alloy comprises by weight percentage:

  • 36% to 43% Cr, 0.2% to 5.0% Fe, 0 to 2.0% Nb, 0 to 1% Mo, 0.3% to 1% Ti, be greater than 0.5% and be less than or equal to 2% Al, 0.005% to 0.05% C, 0.005% to 0.020% (Mg+Ca), 0 to 1% Mn, 0 to 0.5% Si, be less than 0.01% S, and surplus is essentially additive and the impurity of Ni and trace.

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