Scientifically substantiated normalizing of metal consumption in tube production

Metallurgist ◽  
1979 ◽  
Vol 23 (12) ◽  
pp. 865-866
Author(s):  
G. I. Khaustov ◽  
V. A. Bogatyrev ◽  
I. I. Mikhailovskaya ◽  
A. S. Savchenko ◽  
Yu. L. Kalashnikov

Metallurgist ◽  
1981 ◽  
Vol 25 (11) ◽  
pp. 437-442
Author(s):  
M. B. Bisk ◽  
�. A. Dervoed ◽  
A. I. Borodin


Metallurgist ◽  
1985 ◽  
Vol 29 (12) ◽  
pp. 401-403
Author(s):  
A. I. Dovgal' ◽  
V. P. Rukobratskii ◽  
G. A. Frolova ◽  
I. Z. Shifrin ◽  
M. P. Onishchenko ◽  
...  


Author(s):  
Andrey Kirichek ◽  
Dmitriy Solovyev

The article is devoted to the analysis of known structures of impact devices used in industry in order to obtain recommendations for their adaptation or when creating new structures for wave strain hardening by surface plastic deformation. The analysis was carried out on the used drive and on the main parameters of impact devices: impact energy, impact frequency, relative metal consumption and efficiency. The options are the best combinations of parameters for electric, pneumatic and hydraulic drives. Recommendations are given on the use of such devices, with appropriate adaptation, as pulse generators for wave strain hardening.



1996 ◽  
Vol 24 (1) ◽  
pp. 31-35 ◽  
Author(s):  
JoAnn P. Fenn ◽  
Helene Segal ◽  
Lisa Blevins ◽  
Shawn Fawson ◽  
Patty Newcomb-Gayman ◽  
...  


Author(s):  
Takuya Futase ◽  
Takeshi Kamino ◽  
Naoto Hashikawa ◽  
Yutaka Inaba ◽  
Tetsuo Fujiwara ◽  
...  


Metallurgist ◽  
1988 ◽  
Vol 32 (1) ◽  
pp. 51-52
Author(s):  
V. V. Ermakov ◽  
�. N. Shebanits ◽  
V. N. Irkha ◽  
N. N. Ushakov ◽  
G. S. Borisenko ◽  
...  


Author(s):  
Илья Александрович Флегентов ◽  
Алексей Викторович Кулешов

По результатам проведенного анализа конструктивных решений камер пуска-приема средств очистки и диагностики (КПП СОД), применяемых при технической диагностике и техническом обслуживании магистральных трубопроводов в России и за рубежом, был установлен ряд проблем существующих конструкций, снижающих эксплуатационную надежность данного вида оборудования. Это, в свою очередь, обусловило актуальность задачи оптимизации конструкции КПП СОД, в том числе в части унификации используемых при их изготовлении деталей, увеличения доли заводских изделий. Были приняты решения, обеспечившие комплексный подход к вопросу повышения надежности и ремонтопригодности оборудования - разработана новая конструкция КПП СОД, позволяющая снизить металлоемкость и трудоемкость при изготовлении, сократить эксплуатационные затраты, повысить технологичность и прочностные характеристики. В рамках решения данной задачи выполнены расчетно-теоретические исследования с применением прикладного программного комплекса SIMULIA Abaqus. Надежность оптимизированной конструкции подтверждена результатами испытаний на прочность опытного образца КПП СОД с номинальным диаметром рабочей камеры DN 1000. Разработан типоразмерный ряд КПП СОД усовершенствованной конструкции с номинальными диаметрами рабочей камеры DN 150-1200 для применения на магистральных нефте- и нефтепродуктопроводах. Based on the results of the analysis of the design solutions of launching and receiver stations of pipeline inspection gauges (pig launchers-receivers) used in process diagnostics and maintenance of main pipelines in Russia and abroad, a number of applied design issues was established. This, in turn, led to the relevance of the issue of optimizing the design of pig launchers and receivers, including the unification of parts used in their manufacture, thereby increasing the share of factory-made products. Decisions were made that provided a comprehensive approach to the issue of improving the operational reliability of this type of equipment - a new design of pig launchers and receivers was developed, which allows to reduce production metal consumption and labor intensity, reduce operating costs, increase constructability and reliability. As part of the solution of this issue, computational and theoretical studies using the SIMULIA Abacus software package were carried out. The reliability of the optimized design is confirmed by the results of durability tests of the pig launcher and receiver prototype with the nominal diameter of the working chamber of DN 1000. A dimension range of advanced designs of pig launchers and receivers with nominal working chamber diameters of DN 150-1200 for use in main oil and petroleum product pipelines was developed.



Author(s):  
Aysu Aslaner ◽  
Aysu Gürokur ◽  
Enes Turan ◽  
Karya Varol ◽  
Melisa Menemenlioğlu ◽  
...  
Keyword(s):  


Author(s):  
V. V. Fonov ◽  
S. N. Grechanik ◽  
D. M. Golub

The article reports on the new technology and equipment of vertical‑stack molding (VSM), created by OJSC “BELNIILIT” for the manufacture of vertical‑stack molds. The development is intended for the production of molds and cast blanks of oil, which are later used for the manufacture of piston rings of internal combustion engines.The difference between the above‑mentioned technology and traditional methods of VSM is the use of models without drafts. The development is export‑oriented and has a great economic effect for ring manufacturers due to the absence of drafts on castings, since part of the mechanical operations for their processing is excluded, the metal consumption of blanks is reduced, the production spaces required in this regard are reduced, the necessary labor supply is reduced, etc.OJSC “BELNIILIT” has successfully carried out experimental design and technological work on the new scientific and technical products creation, which are of great interest to the world manufacturers of piston rings. An industrial sample of a molding machine and a mold manipulator were manufactured.



Author(s):  
Upasana Bhumbla ◽  
Amit Gupta

Background: Systemic candidiasis is associated with a high crude mortality rate, even with first line antifungal therapy. C. albicans is the predominant cause of invasive fungal diseases which is a serious public health issue. The main objective was to assess the reliability of different media for germ tube production in Candida albicans isolated from various clinically diagnosed pulmonary samples.Methods: All Candida isolates were identified and speciated by conventional methods such as Gram’s staining, germ tube test, chlamydospore formation on corn meal agar, sugar fermentation test, sugar assimilation test, and growth on Hi-chrome candida agar.Results: Out of 108 clinical isolates of Candida albicans, 5 different methods were used for germ tube production. Pooled human sera showed 93/108 (86.1%) was the most sensitive method wherein YEPD (yeast extract peptone dextrose) broth 91/108 (84.7%) was the reliable and easy method for detection of germ tube, followed by trypticase soy broth 81/108 (81.4%); peptone water 80/108 (74.7%) and 2% sucrose 71/108 (65.7%).Conclusions: YPED broth is found to be a better serum free substrate and subsequently for the presumptive differentiation of C. albicans from non-albicans candida (NAC), without the extensive time required for the preparation and testing of pooled human serum. Furthermore, this medium is commercially available, more stable, effective, and is not bio hazardous.



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