نتایج جستجو برای: rock sawing process

تعداد نتایج: 1347184  

2001
Bruce Lehmann

Accurate sawing requires attention to proper alignment and maintenance. Alignment is critical to modern sawmills using thin kerf saws. In fact, the improvements in machine design were critical to the development of thin kerf sawing systems. About two-thirds of sawing problems are caused by misalignment, not saw preparation. Good alignment reduces down-time and machinery wear and should be part ...

Journal: :Philosophical transactions. Series A, Mathematical, physical, and engineering sciences 2011
C Bierwisch R Kübler G Kleer M Moseler

Optimization of the wire sawing process of silicon ingots requires a profound understanding of the dynamic interaction of wire, slurry and silicon material. In this paper, the influence of wire velocity and applied wire stress on the process is investigated using dissipative particle dynamics and discrete element simulations for modelling the fluid and the grains in the abrasive suspension. In ...

Journal: :مهندسی معدن 0
رضا میکائیل دانشگاه صنعتی شاهرود محمد عطایی دانشگاه صنعتی شاهرود رضا یوسفی دانشگاه صنعتی شریف

rock sawability prediction and determination of effective parameters are important in the cost estimation and the planning of the stone factories. an accurate estimation of rock sawability and performance prediction of sawing machine helps to make the planning of the rock sawing projects more efficient. it is necessary to predict the rock sawability and determine the effective parameters to ach...

2014
Thomas Knott Raluca E. Sofronia Marcus Gerressen Yuen C. Law Arjana Davidescu George G. Savii Karls H. Gatzweiler Manfred Staat Torsten Kuhlen

Successful bone sawing requires a high level of skill and experience, which could be gained by the use of Virtual Reality-based simulators. A key aspect of these medical simulators is realistic force feedback. The aim of this paper is to model the bone sawing process in order to develop a valid training simulator for the bilateral sagittal split osteotomy, the most often applied corrective surg...

Journal: :Journal of the Japan Society for Precision Engineering 2020

Journal: : 2022

This paper deals with the measurement and simulation of saw wire temperature during machining a rock sample in vacuum. It is expected for wire-sawing to keep cutting performance by successive supply edges. The vacuum has been investigated lunar planetary explorations. To clarify deterioration due nickel adhesion on rock, rise was investigated. In experiment, reciprocated slider-clank mechanism ...

2000
D. B. RICHARDS W. K. ADKINS

Preface Abstract Mathematical modeling computer programs for several hardwood sawing systems have been developed and are described. One has judgment capabilities. Several of the subroutines are common to all of the models. These models are the basis for further research which examines the question of best-grade sawing method in terms of lumber value yield. This Research Paper is one in a series...

1997
Philip H. Steele Michael W. Wade Steven H. Bullard Philip A. Araman

Information on the conversion efficiency of sawing machines is important to those involved in the management, maintenance, and design of sawmills. Little information on the conversion characteristics of hardwood sawing machines has been available. This study, based on 266 studies of 6 machine types, provides an analysis of the machine characteristics of kerf width, within-board, between-board, ...

2006
Peter Hamner Marshall White Philip Araman

Curve sawing is a primary log breakdown process that incorporates gang-saw technology to allow two-sided cants from logs with sweep to be cut parallel to the log surface or log axis. Since curve-sawn logs with sweep are cut along the grain, the potential for producing high quality straight-grain lumber and cants increases, and strength, stiffness, and dimensional stability are maximized. Presen...

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