Paper Title:
Influencing Factors Analysis of the Crack on Laser Cladding of Valve Sealing Surface
  Abstract

Thick laser coating on sealing surface of high parameter nuclear and chemical valve have been made, And the factors that will influence layer’s cracking behavior have been analyzed including laser cladding material, technology and base metal. It is approved by experiment that the greater the energy ratio is, the lower the possibility of cracking would be. But this case may cause diluting rate of the coat increasing, grains coarsening and hardness reducing. B and Si can create hard phase, reduce coating’s plasticity, and generate segregation easily in Ni-base alloy which may cause crystal crack. The rate of coating cracking will reduce when substrate has homogeneous structure, no relict stress, no defect, good plasticity, and, its rate of heat expansion is a bit higher than clad material, heat capacity is small, shape and structure is simple and heat symmetrical characteristic is good.

  Info
Periodical
Key Engineering Materials (Volumes 426-427)
Edited by
Dunwen Zuo, Hun Guo, Guoxing Tang, Weidong Jin, Chunjie Liu and Chun Su
Pages
705-708
DOI
10.4028/www.scientific.net/KEM.426-427.705
Citation
G. Y. Fu, S. H. Shi, "Influencing Factors Analysis of the Crack on Laser Cladding of Valve Sealing Surface ", Key Engineering Materials, Vols. 426-427, pp. 705-708, 2010
Online since
January 2010
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Zhong Tang Gao, Min Hua Zhang
Chapter 2: Dynamics and Vibration
Abstract:Send laser cladding experiments to the substrate surface in 16Mn in the Synchronous way. By different laser cladding parameters on the...
236