B - Operations – Transporting – 24 – D
Patent
B - Operations, Transporting
24
D
B24D 18/00 (2006.01) C09K 3/14 (2006.01)
Patent
CA 2717570
A method of forming aggregate abrasive grains for use in the production of abrading or cutting tools comprises providing abrasive core particles; coating these particles with adhesive, the adhesive comprising a binding agent and a solvent for the binding agent; separately dropping the adhesive-coated core particles onto a layer of abrasive peripheral particles and covering the dropped core particles with further peripheral particles, in such a way as to form aggregate particles, each of which comprises a core particle having peripheral particles attached to it; consolidating the aggregate particles by causing the solvent to evaporate, i.e. by letting the adhesive set.
La présente invention concerne un procédé de formation de grains abrasifs agrégés destinés à être utilisés dans la production doutils dabrasion ou de coupe comprenant : la mise à disposition de particules de noyau abrasifs; le revêtement de ces particules avec un adhésif, ladhésif comportant un agent liant et un solvant pour lagent liant; la projection séparée des particules noyaux revêtues dadhésif sur une couche de particules abrasives périphériques et le recouvrement des particules de noyau projetées avec dautres particules périphériques, de manière à former des particules agrégées, dont chacune comporte une particule noyau ayant des particules périphériques fixées; la consolidation des particules agrégées en entraînant lévaporation du solvant, c'est-à-dire en permettant la prise de ladhésif.
Gowling Lafleur Henderson Llp
Sheridan Cedric
LandOfFree
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