Рубрика: Manufacturing Processes 2

Resin Bonds

The resin bond consists of a synthetic resin or synthetic resin combination with or without fillers. For particular grinding wheel types, applications or different fabri­cation methods, there are many resins available. In the case of the dry mix method, phenol resol is used for the grit wetting as well as a phenol resin powder based […]

Tool Steels

Tool steels are generally subdivided into • unalloyed tool steels and • alloyed tool steels. These are utilised for varied purposes. Therefore tool steels are further differen­tiated into the particular application groupings of cold working steels, hot working steels and high speed steels. The assignment of any steel to a tool steel group re­sults only […]

Crushing

A special case of dressing is crushing. The operating principle of crushing is based on the crushing of bond bridge when a certain force level on the grinding wheel coating is exceeded [DENN02]. This is achieved by pressing rollers on the grind­ing wheel layer without relative velocity (dressing speed ratio qd = 1). The crushing, […]

Cutting Edge Form

In order to form a chip, the grains cutting into the component must be harder than the material which is to be machined. Crystalline and brittle abrasive materials are used. The grains splinter during the crushing caused by the production process, so that the fragments possess an irregular form with more or less sharp corners […]

Vitrified Bonds

Vitrified bonds are formed by mixtures from the natural silicates red and white clay, kaolin and feldspar, as well as quartz and, as an additive, frits [HADE66, PADB93]. Frits are glassy, previously melted and pulverised organic and inorganic mixes which serve as fluxing agents and give the vitrified bond certain properties. Among other things, they […]

The Bond

The binding agent makes the connection between the abrasive carrier medium and the abrasive grit and simultaneously braces the particular grits against each other. In order to achieve satisfactory grit adhesion, the binder consists of two layers ap­plied one after the other. Firstly, the prepared backing material is furnished with the basic bond (primary layer). […]