Foundry
The experimental investigations on reactivation of ferric oxide are carried out.
The results of researches on creation of the cast iron melting technology using iron-containing materials with organic contaminants as burden are given.
The article deals with methods for fine-grained structure of ingots during crystallization depending on the used foundry technologies. It is shown that by using modern scientific and technological advances may improve the traditional and the development of new casting processes, providing production of cast parts with over fine-grained structure and enhanced properties.
The modern circuit realizations of structural and algorithmic transformations of pyrometry and thermal control are considered.
The methods of carrying out of experiments by determination of gas creating ability of different materials which are of interest from the point of view of molding of aluminum alloys under pressure are given and described, and the results of research are presented as well.
Cryotechnology of founding from ferrous and nonferrous metals under ice models enables to remove organic materials from foundry. It increases the ecological safety of production, reduces cost of castings and promotes the solution of problems of resources-saving.
Metallurgy
The perspectives of development of scrap processing on JSC “BMZ” which will allow to provide steel-smelting production by metal-burden of required quality are shown.
Features formation of cracks in steel 18хГТ are investigated. It is established that in the course of crystallization the peritectic transformation goes on phase reactions: formation of primary ferrite from liquid and formation of peritectic austenite from this ferrite and residual liquid.
There are results of researches of the mechanical properties and structure of the wire rod made of low-carbon nickel molybdenum steel after reduction to toughness thermomechanical treatment in the stream of high-speed wire mill.
The program, directed on development of the technology of structural steels production for automotive industry, is developed at JSC «BMZ» in frame of implementation of innovative technologies on development of automobile steel grades.
Influence of technological parameters of deformation on solidity losses at the example of super-strength wire with diameter 0,20 mm is considered. Difference of influence of separate types of deformation from influence of summation influence on solidity losses is shown.
The defect, revealed on an external surface of sleeves at piercing of slug at piercing mill of helical rolling of construction «СТР100VD» with twin-pillar rollers of mushroom shape and guiding disks of Disher, is considered.
It is shown that production technology of standard sample of enterprise for control of seamless pipes by efforts of JSC «BMZ» allowed for pipe-rolling shop to save considerable means, and also to become more competitive in the world market.
Decrease of calculations variability due to centralized automation of engineering processes enables to receive effective results from rating of the raw materials consumption.
It is shown that influence of climatic factor on production processes is necessary to be taken into account at planning of enterprise work: to carry out correction of production schedules, and also to vary specific norms of raw and materials consumption.
The main schemes of recovery of waste gases heat, applied in fuel furnaces of metallurgical and machinebuilding production, are analysed, and also criteria of choice of recuperators construction depending on function and constructions of furnaces are considered.
The existing methods of modeling of the thermalphysic processes taking place in working space of heating and thermal furnaces are analysed. And also the comparative appraisal of the program complexes in which these methods are realized is given.
The matters of optimization of thermal insulation of high-temperature units of metallurgy and machine-building are considered. Comparison of expenses for power efficient brickwork and fuel economy is given.
It is shown that immersed glasses Fosulis of construction of TECHCOM considerably improve quality of special steels.
Science of materials
Data of thermodynamic modeling of balanced structure of powders of the mechanically alloyed thermo-reactive compositions, dependences of powders heating and structure of coverings on temperature of plasma stream, and also the results of optimization of spatter process are given.
Studied characteristics of structure formation in plasma balls anchor coulters planters made from highstrength вч 50.
The comparative researches of microstructure of highstrength cast iron after laser and plasma processing are carried out. It is shown that the peculiarity of plasma processing is formation of deeper layers with hardness 950010000 MPa. At laser processing the depth of the strengthened layers is less (about 0,5-0,8 mm), and their hardness is higher (to 11000 MPa).
The variant of solution of the problem of porous powder materials production of spherical powders of corrosion-resistant steel with use of the complex technology combining development of nanotechnology, enabling to put on powder particles surfaces of condensate with thickness over 300 nanometers from layers of Si and mixture of elements (Si+C) or (Mo+Si) in the conditions of separate synthesis is offered.
The comparison of structure images (steel, cast iron, aluminum alloys) obtained with the help of scanning and metallographic microscopes has been made. The type of a microscopy to be used has been analyzed concerning the study of metallographic sections, fractures and surfaces formed by cutting tools.
Experience exchange
All forms of rewards of employees for successful fulfillment of importance tasks are considered in detail.
EDITORIAL
ISSN 2414-0406 (Online)