Clays are the basis for a number of products, but the equipment necessary for processing the clay is much the same in each instance; consequently, lubrication problems have much in common. Clay based industries include brick manufacture, ceramics and tile. The earth may either be prepared at the point of consumption or crushed and ground at the mine for shipment. Normally, clay come from the mines or quarries as hard lumps which may be fed to a jaw or single roll crusher. The nature of the clay determines the method of crushing or grinding. Soft, friable earths require only crushing; while others have the particles partially cemented together and must be ground. Most of the drives for either purpose are by motors and reduction gears. These gears may be enclosed or open. The enclosed gears throughout the plants may be lubricated with oil 300 to 500 SUS at 100 degree F. This can be either a straight mineral oil or one containing a mild EP additive. Dust is almost certain to work into gear cases and, therefore, with large installations, circulating oil which can be filtered is desirable. Where this is not practical, the gear boxes should be drained every two to six months, flushed out and refilled. Open gears may be lubricated with a residuum of about 2000 viscosity SUS at 210 degree F which can be warmed for application. Frequent use will help flush off dust which becomes mixed with the lubricant. Following crushing or grinding, the clay is screened and the entire process may be repeated to obtain the desired fineness. Most clay is next mixed with water in pug mills and then are extruded or formed into desired articles. From such operations most clay based products are handled on conveyors unless placed on carts or cars for drying and burning or vitrifying. Even then, if the kilns are of the tunnel variety, further conveyor chains may move the carts through the kiln. Much of this equipment is driven by reduction gears, often enclosed. Therefore the same type and grade of lubricants as were mentioned earlier can be used throughout the plant. Gears should not be present in kilns and, therefore, are not subjected to any great heat. Other types of equipment, if present, can receive similar lubrication. These might include drives for elevators, augers, cutting machines and fans.
Showing posts with label consumption. Show all posts
Showing posts with label consumption. Show all posts
Thursday, November 22, 2012
Clay processing Plants and gear Lubrication
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Clays are the basis for a number of products, but the equipment necessary for processing the clay is much the same in each instance; consequently, lubrication problems have much in common. Clay based industries include brick manufacture, ceramics and tile. The earth may either be prepared at the point of consumption or crushed and ground at the mine for shipment. Normally, clay come from the mines or quarries as hard lumps which may be fed to a jaw or single roll crusher. The nature of the clay determines the method of crushing or grinding. Soft, friable earths require only crushing; while others have the particles partially cemented together and must be ground. Most of the drives for either purpose are by motors and reduction gears. These gears may be enclosed or open. The enclosed gears throughout the plants may be lubricated with oil 300 to 500 SUS at 100 degree F. This can be either a straight mineral oil or one containing a mild EP additive. Dust is almost certain to work into gear cases and, therefore, with large installations, circulating oil which can be filtered is desirable. Where this is not practical, the gear boxes should be drained every two to six months, flushed out and refilled. Open gears may be lubricated with a residuum of about 2000 viscosity SUS at 210 degree F which can be warmed for application. Frequent use will help flush off dust which becomes mixed with the lubricant. Following crushing or grinding, the clay is screened and the entire process may be repeated to obtain the desired fineness. Most clay is next mixed with water in pug mills and then are extruded or formed into desired articles. From such operations most clay based products are handled on conveyors unless placed on carts or cars for drying and burning or vitrifying. Even then, if the kilns are of the tunnel variety, further conveyor chains may move the carts through the kiln. Much of this equipment is driven by reduction gears, often enclosed. Therefore the same type and grade of lubricants as were mentioned earlier can be used throughout the plant. Gears should not be present in kilns and, therefore, are not subjected to any great heat. Other types of equipment, if present, can receive similar lubrication. These might include drives for elevators, augers, cutting machines and fans.
Tuesday, November 13, 2012
Turbine oils for Automotive Vehicles
Since
gas turbine engines
for automobiles have
a potential which
no doubt will soon
be realized, mention will
be made of the
lubricant requirements for
the drives. The oil will be used
to lubricate both bearings and gearing. The
bulk oil temperature will probably
be at least 300 degree F during operation, but the oil will
not be subjected
to hot combustion gases and thus
should remain comparatively clean.
Whether the oils
used will preferably be petroleum or
synthetic or blends of
the two is a
question. Whatever type, they will
no doubt contain various additives, such as antifoam
agents, oxidation inhibitors, metal deactivators, and antiwear agents.
Speculation as to
consumption and renewal
of such oils
indicates that the oil reservoir
will have a capacity
of about 3 quarts and that
the consumption will be almost
nil but that
an oil change
yearly can be expected.
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