A labscale test equipment ot study the tool surface influence in pressure groundwood pulping

A test rig has been designed to allow controlled studies of the mechanisms in the industrial Pressure Ground Wood (PGW) pulping process:The equipment consists of a setup similar to a lathe, with a tool sliding against a rotation wood workpiece.Placed inside a pressure chamber which allows testing at steam temperatures and pressures exceesing those in industrial pulping.Normal force and friction force are continuously monitored.Separated fibers, collected after the test, the tool surface and the track of the machined workpiece are analysed after the test.