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Skoblo T.S., Sidashenko A.I., Saichuk A.V., Manilo V.L., Romanyuk S.P. Quality evaluation of gray iron castings by nondestructive testing methods
When casting housings transmissions and transfer of gray cast iron is often marked by the formation of cracks, which are fixed on the surface of products. To remove usecleaning with subsequent welding or discarded.
Key words: Coercive force, x-ray examinations, thermionic emission, crack formation.

Krivopalov D.S., Nikitin K.V., Nikitin V.I., Fedotov V.T., Petrunin S.S. Production and application of nano-structured inoculating master alloys for aluminum alloys
A new class of nanostructured modifying ligatures AlZr10 b AlTi5 for machining of aluminium alloys was investigated. Assess their structural parameters and the effectiveness of the modification on the example of wrought aluminium alloy 4,5 (5083).
Key words: Nanostructure, intermetallics, modification, high speed cooling, rapidly quenched ribbon, alloy of system Al-Mg, macrostructure.

Vdovin K.N., Savinov A.S., Feoktistov N.A. Prediction of crack resistance of large steel castings
The article discusses methods of prediction of probability of hot tear formation on large steel castings. Besides, results of examination of physical-and-mechanical properties of grade 25L carbon steel in the temperature range of 20 to 1400C required for prediction of steel casting crack resistance are presented. An example of predicting the probability of hot tear formation on slag cups is discussed.
Key words: Slag cup, gating system, crack resistance, steel casting, hot tears.

Mukhomorov I.A. Problems of sand mold
Analysis of mechanical production of sand molds is given, causes affecting mold and casting quality are specified, methods of mold production quality are proposed.
Key words: Sand mold, molding sand compactibility, flask, batcher, molding machine, automatic molding line, molding sand strength.

Voronin Y.F., Sikorskiy E.O. Automatic system for identifying and eliminating casting defects
Discussed is the application of a new automatic system (AS) provided with conditions of quick response to examiners requests on identifying the types of casting defects, stages of their formation and elimination methods. The system consists of three levels: on the 1st and 2nd level there are considered and selected defects similar to the one under examination, on the 3rd level there are determined causes of formation and methods of elimination. Discussed are variants of revealing and eliminating the hot tear, and blowhole subcutaneous blowhole defects.
Key words: Automatic system, casting defects, types of defects, visual-and-logical approach, pattern recognition, analysis, brief recommendations, extended analysis of defects, reduction of casting rejects.

Barinov S.G., Kuznetsov A.V. Methods of marking castings by the cast-in-place principle
The article discusses methods of applying individual cast marking to castings. Use of those methods will allow to assign a unique code or number to each casting, ensure production process control, comply with iso 16949 requirement, and track products life cycle.
Key words: Marking, casting, products life cycle, production control.

Nazarkin R.M., Konokotin S.P., Moiseeva N.S., Azarovskiy E.N. Examination of r-based alloy crystallized in electromagnetic field
In article, the problem of increase of mechanical properties of metal by means of electromagnetic processing for liquid metal in the course of crystallization is considered. It is revealed that electromagnetic processing of liquid metal during crystallization considerably increases the impact strength of the alloy. It is revealed that increase of impact strength of alloy of the VKh-1 type is accompanied by emergence in structure of metal of sharply being shown crystallographic structure in the direction [112] or [011]. It is conclusions that along with increase of mechanical properties of material are drawn; electromagnetic processing of liquid metal promotes formation of direction crystallographic structure in materials. It can find application in metallurgy when casting manufacturing with the set crystallographic orientation
Key words: Chromium-based alloy, scanning electron microscopy, X-ray diffraction analysis, crystallization, electromagnetic field.

Leushina L.I., Leushin I.O., Plokhov S.V. Modeling the firing of quartz-based shell molds
Supported by the results of examination of the author-suggested aspects of quartz-based ceramic shell mold firing procedure, one has shown that the key processes related to the formatation of quality shell, in general, proceed at temperatures not exceeding 600C. This creates prerequisites for an approach to this boundary of the firing temperature maximum while realizing the time-temperature mode of this procedure.
Key words: Investment casting, shell mold firing, thermo-mechanical, physics-chemical, functional aspects.

Shein A.M. asting with crystallization under pressure a piston for Internal combustion engine at OAO KAMAZ foundry
Pistons for internal combustion engines were made by casting with crystallization under pressure. The experimental work made it possible to improve the quality of castings produced.
Key words: Casting with crystallization under pressure, die, hydraulic press, niresist insert, alitizing.




Table of content

Skoblo T.S., Sidashenko A.I., Saichuk A.V., Manilo V.L., Romanyuk S.P. Quality evaluation of gray iron castings by nondestructive testing methods

Krivopalov D.S., Nikitin K.V., Nikitin V.I., Fedotov V.T., Petrunin S.S. Production and application of nano-structured inoculating master alloys for aluminum alloys

Vdovin K.N., Savinov A.S., Feoktistov N.A. Prediction of crack resistance of large steel castings

Mukhomorov I.A. Problems of sand mold

Voronin Y.F., Sikorskiy E.O. Automatic system for identifying and eliminating casting defects

Barinov S.G., Kuznetsov A.V. Methods of marking castings by the cast-in-place principle

Nazarkin R.M., Konokotin S.P., Moiseeva N.S., Azarovskiy E.N. Examination of r-based alloy crystallized in electromagnetic field

Leushina L.I., Leushin I.O., Plokhov S.V. Modeling the firing of quartz-based shell molds

Shein A.M. asting with crystallization under pressure a piston for Internal combustion engine at OAO KAMAZ foundry




November 2014

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, 2014
e-mail:lp@niit.ru
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