Georgia Pacific’s container plant in Chicago was experiencing very high maintenance and downtime costs on the 8-inch (203 mm) corrugator brakes on its Martin roll stands. Georgia Pacific runs 1524 mm diameter rolls, 2489 mm wide at 260 m per minute. Maintenance manager Rodney Cotillie, explained that the airtube actuators and pressure plates were failing within eight weeks of operation due to the high heat generated during the unwind operation.
Cotillier approached clutch and brake manufacturer WPT Power Transmission to engineer a solution. It was found that the heat dissipation capacity would need to be doubled without changing the mounting or expanding the envelope dimensions of the existing brakes.
WPT came up with the WPT model 111 corrugator brake which featured a single 279 mm ventilated centre plate. This was designed to force cooling air through the brake and double the horsepower rating. Special low coefficient friction linings were used to maintain consistent brake torque without any fade which might be caused by temperature or speed change. The brakes were fitted with integral mounting plates which allowed for bolt up installation without machine modification.
Cotillier reported that the first set of corrugator brakes performed continually and reliably for 14 months without replacement of wear parts. The new brakes operated at only 17 to 20 psi, with 28 psi at full emergency stop, with no roll runoff.
Additional benefits of the new brakes were faster splices and reduced compressed air requirements on the entire system. Higher production capability, reduced maintenance and downtime cost, and greater efficiency were also credited to new brakes.
Emerson software optimises maintenance
Other technologies
Emerson has announced the Plantweb Insight Valve Health Application, a powerful software tool that combines Fisher control valve expertise with advanced analytic algorithms. The new app makes it possible for users to visualise an entire connected fleet of valves, while prioritising actions based on the health index of each valve.
Read more...Emerson software optimises maintenance
Other technologies
Emerson has announced the Plantweb Insight Valve Health Application, a powerful software tool that combines Fisher control valve expertise with advanced analytic algorithms. The new app makes it possible for users to visualise an entire connected fleet of valves, while prioritising actions based on the health index of each valve.
Read more...R200 part saves recycler millions igus
Other technologies
A simple switch to a polymer bearing, in place of stainless steel, has saved lead acid battery recycler, Frys Metals, tens of thousands of rands in maintenance costs, and much more in preventing lost production time.
Read more...Lube tip: thermal failure in lubricants WearCheck, a division of Synerlytic Services
Other technologies
One of the most common causes of thermal failure in hydraulic fluids and some lubricating oils relates to aeration.
Read more...Superior lubrication capability
Other technologies
Superior lubrication slashes electricity consumption, reduces vibration, and increases protection through dramatically lower friction.
Read more...Approaches to wire rope lubrication
Other technologies
The approaches to wire rope lubrication have shifted in recent years, largely due to important technological advances to improve the application and performance of lubrication products for wire ropes. Locally, Lubrication Engineers has been at the forefront of these advancements.
Read more...Megatrends shaping the auto industry
Other technologies
The automotive industry is in the midst of a technology-driven revolution that will not only advance the safety and sustainability of transportation, but also transform how consumers interact with their vehicles and the OEM brands behind them.
Read more...Lube tip: foaming is affected by oil level WearCheck, a division of Synerlytic Services
Other technologies
In a circulating system, it is crucial to check the oil level before introducing anti-foam agents to address a foaming problem.
Read more...Powerful diagnostic tool for condition monitoring SKF South Africa
Other technologies
SKF has extended its Microlog Analyser family of data collection devices with a new model that offers faster measurement collection and greater diagnostic power. “The new SKF Microlog Analyser that is ...
printer friendly version