The Study on Microstructure of the Heat Affected Zone for Removing of Beadmark in the Overlayered Wrapping Roll

오버레이용접된 Wrapping Roll의 비드마크제거를 위한 열영향부의 미세조직에 관한 연구

  • 유국종 (영남대학교 공과대학 재료금속공학부) ;
  • 백응률 (영남대학교 공고대학 재료금속공학부)
  • Published : 2000.12.01

Abstract

In case of overalyered wrapping roll, beadmark shape appear at wrapping roll surface due to irregular wear between weld bead. Irregular wear of this is caused by difference of hardness between weld bead. This study aims at investigating which matrix is good for removing of beadmark at wrapping roll surface. So, we make specimen with martensitic matrix and austenitic matrix. The overlayered alloys were deposited 4 times on a SS41 steel plate using self-shielding flux cored arc welding method. Difference of hardness between weld bead of specimen with matrix of martensite was higher than specimen with matrix of austenite both as-welded and after heat treatment. Therefore, austenitic matrix is between than martensitic matrix for removing of beadmark of wrapping roll surface.

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References

  1. Surface Engineering for wear resistance K.G. Budinski
  2. WeldingBrazing and Soldering, Metals Park(9th ed.) v.6 American Society for Matals, Metals Handbook ASM
  3. Weld. J. v.61 no.11 R.J. Dawson;S. Shewchuk;J.E. Pritchard
  4. Welding Research Abroad v.26 Y.M.Kuskov;I.I. Flumin;G.V. Ksendzyk
  5. Weld. J. v.71 D. Kotecki
  6. Nitteshard co.'s catalogue Nittes Hardfacing Products
  7. Fujico's catalogue Kogyosho Welding Products Fuji
  8. 산업과학기술연구소 보고서 열연 Down Coiler의 Roll 표면개질연구 안상호;백응률
  9. Introdution to the physical metallurgy of Welding Kenneth Easterling
  10. Principles of welding technology L. M. Gourd