iron pourer is different, and you can’t rely on the same worker or schedule to pour that job every time.” — Harris and Braden
“We have a process sheet for each
job. So, we might have a big chunky casting that misruns at the top. Te process sheet will indicate that you may not have to pour as hard throughout the pour, but you have to increase the speed at the end to [ensure metal enters] the top of the cope.”—Barnhard
“You’re done when the pouring basin
doesn’t take any more metal and begins to backfill.”—Russ Rosmait, Pittsburg State Univ.
“If you view the sprue as a funnel, if the funnel is narrow enough, it will fill up. If it doesn’t stay full, it sucks air in, and air aspiration can be horrible for some metals.”—Russ Rosmait, professor, Pittsburg State Univ., Pittsburg, Kan.
“Keep the rate consistent and the
sprue full, accelerating the handle to keep the rate going.”—Barnhard
“I am right handed, so I hold the shank with that hand and my left hand is in the loop. My left hand does the indexing. We always hold the weight of the metal with the domi- nant hand. You have to hold it close to your body.”—Barnhard
“Pour as fast as you can until the
pouring cup is full. Te system should be full from the choke back. You want to maintain normal head pressure.”— Scott Lammers, technical director, Ameri- can Foundry Society, Schaumburg, Ill.
“Pour onto the sidewall of the
pour cup, most of which [at Eck Industries] have the speed-bump prior to the opening. We use a metal splash guard to avoid pouring past pouring cups on some jobs, other- wise [we maintain] careful handling of the metal during pouring. We [also] use a part-dedicated sprue.” —Hoefert
“More times than not, the more
experienced pourers have an idea how the job pours and how long it should take. It will start to ‘churn’ and slow down as the mold becomes full.”— Harris and Braden
38 | MODERN CASTING September 2011
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