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No 1 (2012)

Metallurgy

5-9 470
Abstract

Researches of the most often occurred surface defects of rolled wires, their modification at drawing and influence on technological process and quality of cold-drawn wire with regard to working conditions of hardware shops of OAO “BMZ” are  presented.

10-13 3671
Abstract

Influence of temperature of metal fitting in the heating furnace on transformation of cracks is shown. It is established that the most preferable is «hot fitting» from the point of view of decrease of specific gas discharge for the blank heating and productivity increase.

14-17 1912
Abstract

It is shown that at manufacture of metal cord of compact constructions there is a possibility to control by various processing methods the inclination of metal cord layers to migration.

18-23 1940
Abstract

It is shown that the developed methods of carrying out of inter-laboratory verifying tests enable to estimate accuracy of applied test methods and results of measurements.

24-29 3372
Abstract

The results of experimental researches of thermal work at the example of the annular furnaces functioning in conditions of axis-rolling production of Dneprovsk metallurgical industrial complex named after Dzerzhinsky are given.

30-32 488
Abstract

Technological aspects of temperature processing of articles of carbon are considered and construction of thermal installation is offered.

33-37 524
Abstract

The offered and realized additive model of calculation of specific norm of consumption of scrap metal at arc electric steel-smelting furnaces has allowed to reduce considerably the error at calculation of the planned cost price of production.

38-42 494
Abstract

It is shown that use of fiber of the modern material, capable to replace metal reinforcing rod in ferroconcrete, provides decrease of expenses for reinforcing works, increase of degree of production mechanization.

43-47 2070
Abstract

Researches on influence of high-speed heating temperature, regimes of cooling and temperature of abatement on structure and mechanical properties of pipe steel 32G2 are carried out. Recommendations on the regimes of high-speed thermal processing of steel 32G2 which can be used at manufacturing of seamless pipes are given.

48-51 585
Abstract

The researches of influence of the cyclically modulated by amplitude high-frequency magnetic field on mechanical and tribotechnical characteristics of composites with polymericfluorine matrix are carried out for the first time.

52-56 534
Abstract

The theoretical explanation of the rolling process of straps of a variable on length of thickness on mobile profiled mandrel is presented. It is shown that generally the deformation center is divided into zones of settling, shift and an advance. At a certain proportion between degree of deformation and diameter of rollers braking of the latter occurs and in the deformation center just one zone of shift takes place.

Economy

57-62 3547
Abstract
Controlling is philosophy and way of thinking of leaders, oriented to effective development of the enterprise and economic usage of resources.

Computer-aided design of foundry production

63-64 451
Abstract

Integration of IT with concept elements “Poka-jeke” in quality system allows to lower variability of processes and to receive effective results at control of product quality.

65-70 478
Abstract

The mathematical apparatus for calculation of process of thermal heating and cooling of the detail which is situated in modeling environment of the furnace is presented. Modules of the software “ProTerm-1” in the environment of visual programming Delphi 7.0 for operating system Windows 95/98/2000XP vista are described.

71-75 483
Abstract

The mathematical apparatus for the calculation analysis of the metal current process in casting mold cavities is described. Boundary conditions for calculation of highspeed regimes and time of filling with metal of complex in the dimensional respect moulds are developed.

Foundry

76-78 2037
Abstract

The method of physical modeling of hydrodynamic processes of alloys molding is developed. It is shown that as a liquid it is necessary to use water and diethyl ether at molding of steel, silumins, tin-base bronzes and waterglycerine solutions.

79-83 430
Abstract

The new approach at calculation of two-phase zone in the interval of crystallization of aluminum-silicon alloys with use of thermal analysis is given.

84-87 546
Abstract

The mechanism of cast iron alloying through slag phase due to use of nickel and copper oxides is considered and the analysis of kinetics regularity of alloying in case of absence of fuse in the form of milled cast-iron chips in slag and at their presence in it is carried out.

88-94 468
Abstract

The basic mechanisms of the process of silicon restoration from alumina-matrix composite ligatures on the basis of quartz sand are established. The mathematical models, describing influence of temperature, an alloy preparation time and quantities of silica in alumina-matrix composite ligatures on silicon output in synthetic alloy, are presented.

95-96 435
Abstract

The research of lubricating ability of new “alternative” materials used in composition of separating coverings at molding of aluminum alloys under high pressure is carried out in the present work.

97-98 3091
Abstract

It is established that for the purpose of increase of modifying efficiency of the melt from gray cast iron it is possible to use mechanically alloyed aluminum powder with superdispersed particles of aluminum and graphite oxide.

Science of materials

99-103 478
Abstract

The reasons of low impact strength and high temperature of viscous-fragile transition of the basic metal of gas pipe from steel 17G1С are investigated. It is established that high fragility of metal of pipe is caused by release of the cementite extended inclusions at the border perlite-ferrite by metallographic researches with application of methods of light and dark field.

104-109 2180
Abstract

It is shown that high-speed heating of profiled electricwelded pipes made of a steel 20PS allows to optimize mechanical characteristics and to raise constructional durability of bearing structures of automobile equipment.

110-114 492
Abstract

Complex research of the powders received by means of attritor dispersion of the chips waste, formed at restoration of working surfaces of forming rolls and rollers at OAO “BMZ” is given. Results of experimental researches of grinding process are given, the optimum conditions of grinding are defined. The structureand phase-formation of powder compositions on the basis of the hard a tungsten-containing alloys waste depending on grinding regimes is investigated.



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ISSN 1683-6065 (Print)
ISSN 2414-0406 (Online)