Features of planning an automated production line of manipulator-type machines

Features of the development of automated processing of parts of manipulator type machines are considered. Optimization of the solution of transport problems leading to a change in the production structure of the enterprise, a change in the specialization forms of its workshops and production sites, a change in freight flow patterns, freight turnover values and associated transport and process schemes for handling unit loads are presented. All these transformations of transport and process schemes result in a change in the general plan of the enterprise, layout schemes of its production buildings, workshops and production sites and other changes in the production and organizational structure. A more detailed solution of the problem of determining the optimal routes in a lean production system is the optimization of process routes at the level of developing routing maps of technological processes for manufacturing each part of the product and assembly processes. Relying on key business processes and organizing assembly production on new principles, the enlarged planning of the production process made it possible to design a modern production module. © 2020 IOP Publishing Ltd. All rights reserved

The Mossbauer spectroscopy studies of epsilon to cementite carbides transformation during isothermal heating from as-quenched state of high carbon tool steel

This work presents results of investigations using the Mossbauer spectroscopy technique and their interpretation concerning transformation of ² to cementite carbides during tempering in relation to the previously conducted dilatometric, microscopic and mechanical investigations. Investigations were performed on 120MnCrMoV8-6-4-2 steel. The in°uence of the tempering time on nucleation and solubility of ² carbides, and on cementite nucleation and growth, was determined. The analysis of phase transformations during various periods of tempering using the Mossbauer spectroscopy technique made possible to reveal ¯ne details connected with the processes

Short-range order and precipitation in Fe-rich Fe-Cr alloys: Atomistic off-lattice Monte Carlo simulations

Short-range order (SRO) in Fe-rich Fe-Cr alloys is investigated by means of atomistic off-lattice Monte Carlo simulations in the semi-grand canonical ensemble using classical interatomic potentials. The SRO parameter defined by Cowley [Phys. Rev. B 77, 669 (1950)] is used to quantify the degree of ordering. In agreement with experiments a strong ordering tendency in the Cr distribution at low Cr concentrations (~< 5%) is observed, as manifested in negative values of the SRO parameters. For intermediate Cr concentrations (5% ~< c_Cr ~< 15%) the SRO parameter for the alpha-phase goes through a minimum, but at the solubility limit the alpha-phase still displays a rather strong SRO. In thermodynamic equilibrium for concentrations within the two-phase region the SRO parameter measured over the entire sample therefore comprises the contributions from both the alpha and alpha-prime phases. If both of these contributions are taken into account, it is possible to quantitatively reproduce the experimental results and interpret their physical implications. It is thereby shown that the inversion of the SRO observed experimentally is due to the formation of stable (supercritical) alpha-prime precipitates. It is not related to the loss of SRO in the alpha-phase or to the presence of unstable (subcritical) Cr precipitates in the alpha-phase.Comment: 9 pages, 8 figure

Complementary use of TEM and APT for the investigation of steels nanostructured by severe plastic deformation

The properties of bulk nanostructured materials are often controlled by atomic scale features like segregation along defects or composition gradients. Here we discuss about the complimentary use of TEM and APT to obtain a full description of nanostructures. The advantages and limitations of both techniques are highlighted on the basis of experimental data collected in severely deformed steels with a special emphasis on carbon spatial distribution

12-Eth­oxy-2,3,8,9-tetra­methoxy­benzo[c]phenanthridine dichloro­methane solvate

The title compound, C23H23NO5·CH2Cl2, was obtained via the alkyl­ation of the 12-hydr­oxy-2,3,8,9-tetra­methoxy­benzo[c]phenanthridine salt. The benzo[c]phenanthridine ring system is essentially planar, with a mean out-of-plane deviation of 0.026 Å. A dicloromethane mol­ecule of solvation is present and located between the sheets of phenanthridine mol­ecules, preventing any significant inter­molecular hydrogen-bonding or π–π inter­actions

3,5-Bis(trifluoromethyl)iodobenzene

InChI = 1S/C8H3F6I/c9-7(10,11)4-1-5(8(12,13)14)3-6(15)2-4/h1-3H InChIKey = VDPIZIZDKPFXLI-UHFFFAOYSA-N (reagent used as a versatile allylation or arylation component) Physical Data: bp 59–61 °C (10 mmHg); fp 74 °C; d 1.919 g cm^(−3). Solubility: sol DMF, acetonitrile, toluene, and most organic solvents. Form Supplied in: pale pink liquid; commercially available. Purification: dried over MgSO_4 and fractionally distilled under vacuum. Handling, Storage, and Precautions: air, light, and moisture sensitive; to be handled in an inert atmosphere; stored in cool, dark, and dry conditions and away from oxidizing agents

Crystal structure of (E)-4-benzylidene-6-phenyl-1,2,3,4,7,8,9,10-octahydrophenanthridine

The preparation of the title compound, C26H25N, was achieved by the condensation of an ethano­lic mixture of benzaldehyde, cyclo­hexa­none and ammonium acetate in a 2:1:1 molar ratio. There are two crystallographically independent mol­ecules in the asymmetric unit. The two cyclo­hexyl rings adopt an anti-envelope conformation with the benzyl moiety adopting a cis conformation with respect to the nitro­gen atom of the phenanthridine segment. In the crystal, mol­ecules are linked through C—H⋯N inter­actions into hydrogen-bonded chains that are further arranged into distinct layers by weak offset π–π inter­actions

Zeta Inhibitory Peptide attenuates learning and memory by inducing NO-mediated downregulation of AMPA receptors

Zeta inhibitory peptide (ZIP), a PKMζ inhibitor, is widely used to interfere with the main- tenance of acquired memories. ZIP is able to erase memory even in the absence of PKMζ, via an unknown mechanism. We found that ZIP induces redistribution of the AMPARGluA1 in HEK293 cells and primary cortical neurons, and decreases AMPAR-mediated currents in the nucleus accumbens (NAc). These effects were mimicked by free arginine or by a modified ZIP in which all but the arginine residues were replaced by alanine. Redistribution was blocked by a peptidase-resistant version of ZIP and by treatment with the nitric oxide (NO)- synthase inhibitor L-NAME. ZIP increased GluA1-S831 phosphorylation and ZIP-induced redistribution was blocked by nitrosyl-mutant GluA1-C875S or serine-mutant GluA1-S831A. Introducing the cleavable arginine-alanine peptide into the NAc attenuated expression of cocaine-conditioned reward. Together, these results suggest that ZIP may act as an arginine donor, facilitating NO-dependent downregulation of AMPARs, thereby attenuating learning and memory

MANUFACTURING OF DISPERSION-STRENGTHENED IRON WITH PRELIMINARY SURFACE OXIDATION

As a result of mechanical alloying with oxygen in consequence of surface oxides dissolution during processing of pre.oxidized iron powder in the mill, bulk iron samples containing FexO strengthening oxides of 2.5 nm size were obtained. It is shown that the samples of ODS.iron have increased strength characteristics (.0.2 ~ 570 MPa, .B ~ 632 MPa).В результате механического легирования кислородом вследствие растворения поверхностных окислов при обработке в мельнице предварительного окисленного порошка железа были получены объемные образцы железа, содержащие упрочняющие оксиды FexO размером 2,5 нм. Показано, что образцы ДУО.железа обладают повышенными прочностными характеристиками (.0,2~570 МПа, .В~632 МПа).Работа выполнена по темам «Структура», № АААА-А18-118020190116-6, при частичной поддержке РФФИ № 18-03-00216. Электронно-микроскопические исследования проведены в ОЭМ ЦКП ИФМ УрО РАН