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  2. Two roll rubber mill - Wikipedia

    en.wikipedia.org/wiki/Two_roll_rubber_mill

    The two roll rubber mill is used in almost every rubber production facility today. Many other inventors created rubber mills with varying degrees of similarity to Chaffee's initial designs. [3] George Watkinson patented a three roll design in 1894 while Harold Denmire patented a four roll design in 1932. [4] [5]

  3. Tandem rolling mill - Wikipedia

    en.wikipedia.org/wiki/Tandem_rolling_mill

    That is, a lower value of friction is used in the calculations. Consider the simplest case: A two roll bridle set with both rolls having the same wrap angle α. Then T 2 = T 1 ⋅ e p⋅μ⋅α, and T 3 = T 2 ⋅ e p⋅μ⋅α. Therefore T 2 / T 1 = T 3 / T 2 which gives, T 2 2 = T 1 ⋅ T 3. And so

  4. List of spreadsheet software - Wikipedia

    en.wikipedia.org/wiki/List_of_spreadsheet_software

    Sourcetable [9] – AI spreadsheet that generates formulas, charts, SQL, and analyzes data. ThinkFree Online Calc – as part of the ThinkFree Office online office suite, using Java; Quadratic - A source available online spreadsheet for technical users, supporting Python, SQL, and Formulas.

  5. Takraf GmbH - Wikipedia

    en.wikipedia.org/wiki/Takraf_GmbH

    2010 and the years following saw the development of the first TAKRAF mobile crushing plant, [11] the double-roll crusher for oil sands [12] and sizer technology, including the X-TREME class sizer range for hard rock processing. [13]

  6. Mechanical screening - Wikipedia

    en.wikipedia.org/wiki/Mechanical_screening

    Mechanical screening, often just called screening, is the practice of taking granulated or crushed ore material and separating it into multiple grades by particle size.. This practice occurs in a variety of industries such as mining and mineral processing, agriculture, pharmaceutical, food, plastics, and recycling.

  7. Spreadsheet - Wikipedia

    en.wikipedia.org/wiki/Spreadsheet

    A formula may contain a condition (or nested conditions)—with or without an actual calculation—and is sometimes used purely to identify and highlight errors. In the example below, it is assumed the sum of a column of percentages (A1 through A6) is tested for validity and an explicit message put into the adjacent right-hand cell.

  8. Cutting stock problem - Wikipedia

    en.wikipedia.org/wiki/Cutting_stock_problem

    This was an open problem until 2007, when an efficient algorithm based on dynamic programming was published. [ 14 ] The minimum number of knife changes problem (for the one-dimensional problem): this is concerned with sequencing and permuting the patterns so as to minimise the number of times the slitting knives have to be moved.

  9. Mill (grinding) - Wikipedia

    en.wikipedia.org/wiki/Mill_(grinding)

    Milling also refers to the process of breaking down, separating, sizing, or classifying aggregate material (e.g. mining ore). For instance rock crushing or grinding to produce uniform aggregate size for construction purposes, or separation of rock, soil or aggregate material for the purposes of structural fill or land reclamation activities.