Results 11 to 20 of about 29,545 (198)
Experimental Device Design and Load Test of PDC Single Cutter Scraping Considering Cyclotron Motion
Academic Journal of Science and Technology, 2023 The rotary motion of the bit caused by the lateral force imbalance of the bit leads to premature failure of the bit, mainly because the side of the cutter makes contact with the rock and participates in breaking rock.
Xinyu Ren, Yingxin Yang, Shiwei Niu
semanticscholar +1 more source
Simulation of machining of the working surface of wheel pairs on machine tools KZh20
Технічна інженерія, 2020 In mechanical engineering, there is a class of parts with a wheel pairs or with a curved working surface, such parts include wheel pairs of rail vehicles.
V.M. Ruban
doaj +1 more source
Technology of Manufacturing of ZC Cylindrical Worm
Materials, 2022 Cylindrical worms are generally machined by the hobbing method using rotary tools, and they are formed in the finishing pass at the full profile height.
P. Boral, R. Gołębski
semanticscholar +1 more source
Rock-Breaking Mechanism of Special-shaped PDC Cutter in Heterogeneous Granite
Shiyou jixie, 2022 In order to clarify the rock-breaking mechanism of special-shaped PDC cutter in the difficult-to-drill formations(e.g. granite), the finite element method was used to establish a mesoscopic heterogeneous granite model with different mineral components ...
Liu Hexing +6 more
doaj
Shiyou jixie, 2021 The research on rock breaking mechanism of special-shaped non-planar PDC cutter is relatively scarce, and the research on domestic prismatic PDC cutter is even scarcer.
Wei Xiuyan +5 more
doaj
Сучасний стан наукових досліджень та технологій в промисловості, 2019 The subject matter of the research in the article is the process of restoring the quality and accuracy of the working surface of the wheelsets of the main electric locomotives, electric sections.
Victor Shapovalov +2 more
doaj +1 more source
PRE-TEETHING WITH PINION SHAPED CUTTER OF GEAR WHEELS WITH NON-EVOLVENTIC
, 2012 Processing teething by copying method presents special disadvantages, as it introduces dividing errors unacceptable for the gear cinematic conditions That is why, where possible, it is preferred processing by rolling: finishing by shaver cutting; pre ...
G. Dan, Dana Bococi, O. Gavrilescu
semanticscholar +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Ongoing evidence indicates increased risk of sarcopenic obesity among children and young people (CYP) with acute lymphoblastic leukemia (ALL), often beginning early in treatment, persisting into survivorship. This review evaluates current literature on body composition in CYP with ALL during and after treatment.
Lina A. Zahed +5 more
wiley +1 more source
Molecular Oncology, EarlyView.This study explores salivary RNA for breast cancer (BC) diagnosis, prognosis, and follow‐up. High‐throughput RNA sequencing identified distinct salivary RNA signatures, including novel transcripts, that differentiate BC from healthy controls, characterize histological and molecular subtypes, and indicate lymph node involvement.
Nicholas Rajan +9 more
wiley +1 more source
Key Drilling Technologies for Ultra-Deep Well Zheng 10 in Junggar Basin
Shiyou jixie, 2023 The strata below the Qingshuihe Formation in the Junggar Basin are found with high uncertainty,low drillability and complicated pressure system,which severely restrains the progress of exploration and development by deep exploration wells in the lower ...
Sun Jiaxiang, Zhao Hongshan, Ma Li
doaj