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I finally stopped using the wrong riser height on my furnace runners
Kept seeing guys at the shop in Trenton set their furnace runners with a 12-inch riser when they're pouring thin-wall castings. That extra height just burns up metal and gives you a cold shut every time. I switched to a 6-inch riser after reading a June 2022 AFS paper, and my scrap rate dropped by nearly 15 percent. Anyone else ever run into this issue with their riser sizing?
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hugoh5529d ago
Can't believe a 6-inch riser made that much difference in your scrap rate.
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alexc9329d ago
A buddy of mine had a similar thing happen with a different setup. He was running a press brake and kept getting bad bends no matter what he tried. Turns out he had a tiny leveling pad under one corner of the machine that was like a quarter-inch too thick. Once he swapped it out, his scrap rate dropped by like 15% overnight. It's crazy how something that small can mess with your whole process.
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walker.cole27d ago
Man, that reminds me of a buddy who runs a CNC plasma table... He spent weeks chasing a 3% scrap rate on some bracket runs. Guy rebuilt the whole Z-axis, checked the gas pressures, everything. Then his helper noticed the table was sitting on a slightly uneven concrete floor, just a hair off. He threw a half inch steel shim under one leg to level it out, and bam, next batch was clean. Funny how you can overthink the complicated stuff and it's usually the stupid simple thing messing you up.
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