WC-2 (1)

Before grinding, a five ball compression test should be done on cores from the cure press area. Place five cores in an egg crate, write the buggy number on them, and soak in chilled water for five minutes. Then keep in the chiller for 30 minutes before doing the compression test. If the buggy passes, turn in the test results. Plot the data on a graph. If the average is outside the safety zones, notify the coordinator. If the average is in the safety zone but the maximum or minimum is out of specification, do a 30 core recheck. If the maximum or minimum is out of specification, notify the coordinator and do a 100% compression check. After grinding, notify the coordinator for a compression check. Follow safety and environmental tips. Prevent bad compression cores from getting to the unit lines. Procedure. Each buggy of cores coming from the cure press area should have a five ball compression test completed before allowing the cores to be ground and sent to the unit lines. Step one. Before grinding, gather five cores from the buggy that is ready for grinding and place them into an egg crate. Do a five core compression check once a shift for each rubber type. Step two. Write the buggy number on the cores. The buggy number is located on the top right hand side of each buggy. Step three. Place the egg crate in the chilled water at extrusion. These cores should be kept in the water for five minutes. Then place in the chiller for an additional 30 minutes before doing a compression check. All compression checks should be performed at 23.9 degrees Celsius. Step four. Print out each five core compression check and place it on the appropriate buggy. If the buggy is good within the target zone, turn in the compression check with your production paperwork after grinding. Plot the data from each check on the compression graph. If the average is outside either safety zones and the maximum and minimum are in the specification, this buggy can be used for production. Notify the coordinator for possible recipe change. If the average is in the safety zone and the maximum or minimum are out of specification, a 30 core compression recheck must be done. If the maximum or minimum are not out of specification, the buggy can be ground and used for production. If the maximum or minimum is out of specification, notify the coordinator and place the buggy on hold for a 100% compression check after grinding. Place the 30 ball compression check on the buggy. When production allows, the cores can then be ground and blown into a buggy and placed on hold for a 100% compression check. Step five. After the buggy is finished being ground, push the buggy over to the compression checker and notify the coordinator that the buggy is ready for a compression check. Note, the buggies of cores to 100% compression checked should be kept in the production curtain area for temperature control. Cold or hot cores should not be compression checked. Tips. Please be aware of the following tips around safety and environmental. Safety tip. Wear cotton gloves when handling hot cores from the cure press area. Environmental tip. Anything not followed by the description above will result in waste and will fall into violation of our EMS policy. Reference specific departmental aspects and impact document BSG ISOVC 010. You've completed this lesson. Select the exit course button to record your results.