Polyurethane Coatings

Polyurethane Coatings
Sun，Jan 17,2010 sunny
Polyurethane coatings provide a thin film, high gloss finish with exceptional weathering performance characteristics. This coating is used in virtually all industrial markets to provide a smooth durable finish that has superior resistance to corrosion, abrasion, and chemical exposure. Polyurethanes are normally used to topcoat high build epoxy and inorganic zinc.
2010-1-18 00:19:20

What happens next in Google standoff with China?
Mon,Jan 18,2010 sunny
BEIJING, Jan 15 (Reuters) - Google Inc (GOOG.O) jolted investors and China this week by threatening to quit the Communist Party-run nation over censorship and hacking, and both sides are tight-lipped about what they expect to happen next.
2010-1-18 23:19:28


Turning gear
Tue，Jan 19，2010 sunny
From WIKIPEDIA
When warming up a steam turbine for use, the main steam stop valves (after the boiler) have a bypass line to allow superheated steam to slowly bypass the valve and proceed to heat up the lines in the system along with the steam turbine. Also a turning gear is engaged when there is no steam to the turbine to slowly rotate the turbine to ensure even heating to prevent uneven expansion. After first rotating the turbine by the turning gear, allowing time for the rotor to assume a straight plane (no bowing), then the turning gear is disengaged and steam is admitted to the turbine, first to the astern blades then to the ahead blades slowly rotating the turbine at 10 to 15 RPM to slowly warm the turbine.
2010-1-20 0:53:19