Modification wood milling tool by alloys coatings ni- co, ni-p and combined zrn-ni-co coatings

  • Chayeuski V. V. УО «Белорусский государственный технологический университет»
  • Grishkevich А. A. УО «Белорусский государственный технологический университет»
  • Zhylinski V. V. УО «Белорусский государственный технологический университет»
Keywords: milling tools, micro-hardness, wear, tool life, combined ZrN-Ni-Co-coating

Abstract

Microhardness of combined ZrN-Ni-Co-coatings is to 1,3–1,5 times more than microhardness of Ni-Со-coating on steel substrate and bare steel. Coatings alloy Ni-P obtained at a current density of 9 A/dm2 have a maximum value of microhardness greater than 2,9 times the value of the microhardness of the steel substrate. When cutting laminated chipboard by steel knives of milling tool with a Ni-Co, Ni-P and ZrN-Ni-Co-coatings, main type of surface wear of edges knives is abrasive. Pilot testing of tool modified with combined ZrN-Ni-Co-coatings at OJSC “Minskdrev” when cutting pine confirmed relevance of the tests carried out, showed an increase in durability period of cutters to 30% compared with bare tool.

Published
2020-02-24
Issue
No 3 (2015)
Section
Статті