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@article{Liu2019OptimumCD, title={Optimum cutting depth and spacing of roadheader picks: a numerical simulation using a three-dimensional cracking method}, author={Weihuang Liu and J. Cao and Tao He and Gao Gengyuan and H. Li and Z. Yin}, journal={Transactions of The Canadian Society for Mechanical Engineering}, year={2019}, volume={43}, pages={366-375} }
Get PriceDetermination of optimum rock cutting data through single pick cutting tests @article{Yasar2019DeterminationOO, title={Determination of optimum rock cutting data through single pick cutting tests}, author={S. Yasar}, journal={Geotechnique Letters}, year={2019}, volume={9}, pages={8-14} }
Get Price2020-3-10 · Partial-face rock excavation machines, which are equipped with conical picks form a major share in the mineral production and in the roadway excavation for underground mines. Consequently, the perf...
Get PriceEvans, I. (1982) Optimum Line Spacing for Cutting Picks,Mining Engineer 141, pp. 433–4. Google Scholar Evans, I. (1984) Lateral Spacing of Point-Attack Picks, Australian Journal of Coal Mining Technology and Research (in press).
Get Price2020-10-1 · In case (c), picks are located far from each other that there is no interaction between succeeding pick and picks cut the rock in an isolated manner. In case (b), picks are placed so effective to each other that picks interact with following picks and this point is regarded as the optimum cutting condition. Download : Download high-res image (838KB)
Get Price2021-3-26 · continuous miner that an inefficient cutting drum laced with 110 picks can be modified to a lacing of only 66 picks, with «» significant cutting improvement The …
Get Price2017-12-5 · This parameter is widely used for the design of the conical tools on the excavators (e.g., shearer drums, cutting heads of roadheaders). The optimum s/d ratio for radial picks generally ranges between 1 and 5 as reported by Balci and Bilgin whereas for conical picks it lies between 2 and 5 according to Bilgin et al. . Although rock cutting experiments indicate that the ratio is …
Get Price2015-2-3 · 21)Liu, WH ; Cao, J He, T; Gao, GY; Li, HL; Yin, ZW .Optimum cutting depth andspacing of road header picks-a numerical simulation using a three-dimensionalcracking method, TRANSACTIONS OF THE CANADIAN SOCIETY FOR
Get Price2021-3-26 · OPTIMUM CUTTING DRUM DESIGN Yehuda Anar A dissertation submitted to the Faculty of Engineering, Univ -rsity of the Witwatersrand, Johannesburg, in fulfilment of the ... ,! *0 The cutting profile of picks dtum.; 11 The [vr,e: acting and tor'iiif on the 69 picks dru. J12 Thr f otcer, acting and torque 'ui. the b9 picks d r urn Page 113 114 115 ...
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Get Price2021-7-21 · Optimum oil flow ³: 52 l/min - 62 l/min 13.7 gal/min - 16.4 gal/min; Max. torque @ 350 bar: 3,120 Nm; Max. cutting force @ 350 bar: 16,900 N; Pick shaft diameter: 20 mm 0.8 inch; Number of picks: 32; Show more
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Get Price2021-7-21 · Optimum oil flow ³ 25 l/min - 38 l/min 6,6 gal/min - 10 gal/min: Max. torque @ 350 bar 1 420 Nm: Max. cutting force @ 350 bar 11 850 N: Pick shaft diameter 15 mm 0,6 inch: Number of picks 56 pc: Max. oil flow @ 10 bar 60 l/min 15,85 gal/min: Max. operating pressure 350 bar 5 …
Get Price2021-7-1 · When the cutting head is used for rock breaking, the conical picks face serious wear and strong impacts from vibration, and the rock-breaking efficiency is low, which results in the unsustainable excavation of deep rocks , , . Therefore, energy-controllable water jet and hydraulic fracturing technology have been applied in oil and gas field ...
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Get Price2020-7-10 · The light green toggle sets the number of cutting edges or Flutes of the bit. The dark brown toggle sets the DOC (depth of cut) in 0.01 increments. Next to it is the purple switch that picks the WOC (width of cut) as a percentage of the bit diameter. So for example if you want to make a slot cut then the full 100% of the bit is cutting.
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Get Price2021-6-9 · The rock cutting processes with the TSDC and WC tipped point attack picks were comprehensively investigated in terms of cutting force, specific energy, tool tip temperature and cutting chips. A study of rock cutting was systematically carried out using the Taguchi method to determine the effects of the cutting parameters on the performance of ...
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Get Price2020-7-10 · The light green toggle sets the number of cutting edges or Flutes of the bit. The dark brown toggle sets the DOC (depth of cut) in 0.01 increments. Next to it is the purple switch that picks the WOC (width of cut) as a percentage of the bit diameter. So for example if you want to make a slot cut then the full 100% of the bit is cutting.
Get Price2017-12-3 · optimum combination of good design, effective maintenance and correct settings to ensure efficient operation. The sealability of films made from polyethylene (PE) is also critical – so the film can run effectively and efficiently through the packaging line. The sealing performance of a PE product will vary according to the resin used.
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