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ARS Home Midwest Area Wooster, Ohio Corn, Soybean and Wheat Quality Research Docs





- Soft Wheat Quality Laboratory Materials and Methods

Milling Methodsheadline bar Allis Mill The Allis-Chalmers mill was acquired in 1909 by the Ohio Agricultural Experiment Station. Chester Evans, a practical miller, was put in charge of the milling operation and baking plant. Mr. Evans came to the station from Williams Brothers Milling, Kent, Ohio. Apparently the Allis-Chalmers mill was donated to the Soft Wheat Quality Laboratory around 1937. The mill was extensively modified during the early 1970's: self-aligning, double-row roller bearings, and extensions manufactured for the roll spacing control arms. A one-inch movement of the control arm around a twenty-four inch radius is equal to one thousandth of an inch (25 microns) change in roll separation. The standard deviation for flour yield of duplicate millings is 0.15%. Read the full method Miag Multomat Mill The Miag Multomat Mill is a pneumatic conveyance system consisting of eight pair of 254 mm diameter x 102 mm wide rolls, and ten sifting passages. Three pair are corrugated and employed as break rolls and five pair are smooth rolls utilized in the reduction process. Each sifting passage contains six separate sieves. The two top sieves for each of the break rolls are intended to be used as scalp screens for the bran. The third break sieving unit of the Soft Wheat Quality Laboratory (SWQL) Miag Multomat Mill was modified so that the top four sieves are employed to scalp bran. That modification increased the final bran sieving surface by 100% and essentially eliminated any loss of flour. Thus, the mill very closely approximates full scale commercial milling. Read the full method Quadrumat Junior Flour Mill Two methods are used on this mill. The Micro Milling Method uses the low speed Tag-Heppenstall corrugated rolls that have a roll speed differential of 1:1. The Advanced Milling Method further processes the Micro Milling Method with a reduction milling on a second Quadrumat Junior mill. Read the full method


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