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Contact problem at mill semi finished items with the account of the thermal emission and forces in knife grinding machines

IOP conference series. Earth and environmental science, 2019-01, Vol.226 (1), p.12010 [Peer Reviewed Journal]

Published under licence by IOP Publishing Ltd ;2019. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;ISSN: 1755-1307 ;ISSN: 1755-1315 ;EISSN: 1755-1315 ;DOI: 10.1088/1755-1315/226/1/012010

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  • Title:
    Contact problem at mill semi finished items with the account of the thermal emission and forces in knife grinding machines
  • Author: Vikharev, S
  • Subjects: Axial forces ; Brake disks ; Centrifugal force ; Fibrous materials ; Grinding machines ; Grinding mills ; Pulp ; Pulp & paper industry ; Steam ; Thermal emission ; Wood pulp
  • Is Part Of: IOP conference series. Earth and environmental science, 2019-01, Vol.226 (1), p.12010
  • Description: Knife grinding machines - the basic process equipment for mill fibrous materials in a pulp and paper industry. In article the forces arising knife gap a backlash at mill chip and fibrous weight of high concentration are investigated. It is centrifugal force, force of friction of a semi finished item about grinding disks, force of pressure steam and axial force. Steam can promote promotion or, on the contrary, braking of movement of a semi finished item in knife gap a backlash. The contact task is considered and solved in view of a thermal emission in a zone mill. Formulas for definition of contact temperatures in a zone mill are received. Settlement values of temperature prove to be true experimental researches. The maximal temperature in a zone of contact is observed in a zone 0.50-0.70 radiuses sets. This zone coincides with a zone of the maximal pressure in which there is a zone of zero speed steam. Current steam is investigated in the field of contact of a rotor and stator. Conditions of movement pair from a zone of zero speed steam to periphery and to the center of grinding disks are revealed. Movement pair to the center of grinding disks is undesirable. Thus productivity of a mill decreases and hydrodynamic impacts grow by elements of a design of a mill. Such mode of movement steam depends on technological and regime factors mill and quite often arises at mill chips in manufactures of a thermomechanical and chemical-thermomechanical wood pulp. The steam is recommended to delete directly from a zone of zero speed.
  • Publisher: Bristol: IOP Publishing
  • Language: English
  • Identifier: ISSN: 1755-1307
    ISSN: 1755-1315
    EISSN: 1755-1315
    DOI: 10.1088/1755-1315/226/1/012010
  • Source: IOPscience (Open Access)
    IOP 英国物理学会OA刊
    Alma/SFX Local Collection
    ProQuest Central
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