2013年5月6日星期一

Composite Cemented Carbide Roll Pros & Cons - part2


Cemented carbide roller cooling water during use is an extremely important means to better cooling conditions, i.e. the cemented carbide roller rolling groove, the higher the tonnage, roll on the contrary is easy to burst. So, in the rolling process, each production shift every 4 hour check whether the mobile pipe cooling water pipe nozzle is blocked, then the car rolling.
Shift changes, the operator should carefully check the wear of the rolling slot and produce a small crack, such as the above occurs, a member of the dispatch room Quality Supervision should be reported, confirmed and then replace cemented carbide roller rolling groove.
In the rolling process, the roll gap adjustment shall be zero clearance; it can not touch cemented carbide roller rolling.
Sampling room, once the exception of rolled products, shall notify the control room, control room after receiving the notice, should be immediately stopped and checked. In case of cemented carbide roller the parent key block protruding screw loose, there was a slight crack in the rolling groove in need of replacement rolling groove and cemented carbide roller.
ф5-ф8 wire recommends the Single Slot rated rolling tonnage 800-1000 tons. Single Slot rolling tonnage can not be over-tonnage, higher than the imposed or surface micro-cracks will cause the roller ring crack, even if it does not crack can also cause cemented carbide roller ring grinding capacity, resulting in uneconomical.

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