Contact problem at mill semi finished items with the account of the thermal emission and forces in knife grinding machines
Электронный архив УГЛТУ
Информация об архиве | Просмотр оригинала| Поле | Значение | |
| Заглавие |
Contact problem at mill semi finished items with the account of the thermal emission and forces in knife grinding machines
|
|
| Автор |
Vikharev, S. N.
|
|
| Тематика |
FORESTRY
GRINDING (MACHINING) GRINDING MACHINES PULP MATERIALS STEAM THERMOMECHANICAL PULP THERMOMECHANICAL PULPING PROCESS TIMBER CENTRIFUGAL FORCES CONTACT TEMPERATURE EXPERIMENTAL RESEARCH FORCE OF FRICTION HYDRODYNAMIC IMPACTS PROCESS EQUIPMENTS PULP AND PAPER INDUSTRY THERMO-MECHANICAL PAPER AND PULP INDUSTRY CENTRIFUGAL FORCE CONTACTING FORESTRY GRINDING KNIVES MILLS PULP INDUSTRY STEAM |
|
| Описание |
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. © Published under licence by IOP Publishing Ltd.
|
|
| Дата |
2019-09-20T15:18:51Z
2019-09-20T15:18:51Z 2019 |
|
| Тип |
Conference paper
Conference object (info:eu-repo/semantics/conferenceObject) Published version (info:eu-repo/semantics/publishedVersion) |
|
| Идентификатор |
Vikharev, S. N. Contact problem at mill semi finished items with the account of the thermal emission and forces in knife grinding machines / S. N. Vikharev // IOP Conference Series: Earth and Environmental Science. – 2019. – Vol. 226. – Iss. 1. – № 12010.
1755-1307 https://elar.usfeu.ru/handle/123456789/8785 |
|
| Язык |
en
|
|
| Права |
Open access (info:eu-repo/semantics/openAccess)
|
|
| Издатель |
Institute of Physics Publishing
|
|
| Источник |
IOP Conference Series: Earth and Environmental Science
|
|