Process for producing grinding elements
AssigneeSEA Schleifmittel Entwicklung Anwendung GmbH
InventorsKarl Elbel, Rainer Augustin
Life of this patent
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Abstract
In a process for producing hard grinding elements, a synthetic resin having a dynamic viscosity of less than 10 mPa.s is used as the binder. By adding this binder, the mixture of abrasive grains, binders, and fillers is highly thixotropic and can easily be liquefied by vibration and can be filled into a casting mold having almost any desired shape where, due to the addition of a radical forming starter system to the mixture, the synthetic resin is polymerized. Methacrylic acid esters or vinyl acetates are particularly applicable as monomers for the binder.
Claims16
In a process for producing grinding elements in a casting mold including placing a mixture of abrasive grains, a cold hardening synthetic resin binder, and other additives into a casting mold, and hardening the synthetic resin to form the grinding element;
- the improvement wherein:
- said abrasive grains and other additives have minimum particle sizes, particle size distributions and relative proportions essentially corresponding to the respective Fuller curve, thereby providing a non-compactable thixotropic mixture having the tightest possible packing of abrasive grains and other additives;
- said synthetic resin used as said binder consists of one or more polymerizable liquids and has a dynamic viscosity of less than 10 mPa.s;
- a radical forming starter system for said resin is added, in a known manner, to said mixture, and said thixotropic mixture is liquified by vibration prior to hardening.
Dependencies are inferred from the claim text.