Method of Speed Mode Correction of Rolling Pipes in the Reduction Mill

2020 ◽  
Vol 299 ◽  
pp. 594-599
Author(s):  
Grigorii A. Orlov ◽  
E.A. Kungurov
Keyword(s):  
Distinctive Feature ◽  
Industrial Testing ◽  
Pipe Rolling ◽  
Front End ◽  
Reduction Mill ◽  
Speed Mode ◽  
Speed Adjustment

The article develops one of the main directions of improving the technology of pipe rolling on a reduction-stretching mill, in order to reduce the end crop. The article describes a speed adjustment technique of the reduction mill, when rolling the front end and back end of pipes, the length of which corresponds to the length of the thickness of ends of the finished pipe. A distinctive feature of the technique is the calculation of volume of the thickness end, which must be reduced by an adjusted value, when rolling the end area in the head stands. The sequence of technological calculations and the results of industrial testing of pipe reduction by standard rolling modes, and modes calculated by the proposed technique, are given. An analysis of the results of industrial testing showed the possibility of reducing the mass of the thickness ends by no less than 7%.

The Calculating Method of Thinning Pipes Ends before Rolling in the Reduction Mill

2020 ◽  
Vol 299 ◽  
pp. 693-698 ◽  
Author(s):  
Grigorii A. Orlov ◽  
A.G. Orlov
Keyword(s):  
Computer Simulation ◽  
Distinctive Feature ◽  
Continuous Mill ◽  
Pipe Rolling ◽  
Calculating Method ◽  
Reduction Mill ◽  
Rolling Plant ◽  
Simulation Results

In this article it is discussed one of the main directions of improving the rolling tubes technology on a pipe-rolling plant with a continuous mill, in order to reduce the pipe-ends cut. A method for preliminary end sections thinning modes, calculating during rolling on a continuous mill, to compensate for wall subsequent thickening in the reduction mill, has been developed. Method distinctive feature is the calculation of end thickening volume, which must be reduced by a specified quantity when end sections rolled. The sequence of technological calculations is given. The results of pipe reduction computer simulation by regular rolling modes, and modes calculated by the proposed method, are represented The analysis of the simulation results showed the possibility of thickened ends length reducing of at least 10%.

A calculation of the external loading is in the drive of cage of reduction figure

2020 ◽  
pp. 53-54
Author(s):  
L.A. Chumakova
Keyword(s):  
Peak Load ◽  
External Loading ◽  
Rolling Moment ◽  
Pipe Rolling ◽  
Reduction Mill ◽  
Load Action ◽  
External Loads

The calculation of external loads is proposed to determine the rolling moment depending on the time of peak load action at different steady rolling moments in the stand of the reduction mill. Keywords pipe, rolling, algorithm, calculation, stand, moment. [email protected]

Reduction mill in the line of a TPA 80 pipe-rolling system

2009 ◽  
Vol 39 (7) ◽  
pp. 584-586
Author(s):  
L. G. Marchenko ◽  
M. M. Fadeev ◽  
Yu. V. Bodrov ◽  
D. V. Ovchinnikov ◽  
D. Yu. Chernyshov
Keyword(s):  
Pipe Rolling ◽  
Rolling System ◽  
Reduction Mill

Low-voltage BIMOS AM front-end amplifier

1990 ◽  
Vol 137 (1) ◽  
pp. 57 ◽  
Author(s):  
M. Steyaert ◽  
Z. Chang
Keyword(s):  
Low Voltage ◽  
Front End

Becoming the Nuclear-Front-End

2017 ◽  
Vol 47 (189) ◽  
Author(s):  
Patrick Schukalla
Keyword(s):  
Nuclear Reactor ◽  
Chemical Elements ◽  
High Technology ◽  
Power Production ◽  
Uranium Mining ◽  
Nuclear Industry ◽  
Current State ◽  
Front End ◽  
Production And Consumption ◽  
Uranium Exploration

Uranium mining often escapes the attention of debates around the nuclear industries. The chemical elements’ representations are focused on the nuclear reactor. The article explores what I refer to as becoming the nuclear front – the uranium mining frontier’s expansion to Tanzania, its historical entanglements and current state. The geographies of the nuclear industries parallel dominant patterns and the unevenness of the global divisions of labour, resource production and consumption. Clearly related to the developments and expectations in the field of atomic power production, uranium exploration and the gathering of geological knowledge on resource potentiality remains a peripheral realm of the technopolitical perceptions of the nuclear fuel chain. Seen as less spectacular and less associated with high-technology than the better-known elements of the nuclear industry the article thus aims to shine light on the processes that pre-figure uranium mining by looking at the example of Tanzania.

Análisis de la aplicación de pruebas funcionales y pruebas de usabilidad de software en el desarrollo de sistemas web

2019 ◽  
Vol 3 (3.4.) ◽  
pp. 180-190
Author(s):  
Natalia Patricia Layedra Larrea ◽  
Marco Vinicio Ramos Valencia ◽  
Blanca Faustina Hidalgo Ponce ◽  
Angela Elizabeth Samaniego Orozco
Keyword(s):  
Front End ◽  
El Sistema

El objetivo general del presente trabajo es analizar la aplicación de pruebas funcionales y pruebas de usabilidad en sistemas web. Para aplicar dichas pruebas se desarrolló un sistema web para la gestión de reuniones eclesiásticas para la Iglesia Bíblica Riobamba. El sistema fue desarrollado utilizando la metodología de desarrollo SCRUM, que permitió realizar un análisis de los requerimientos levantados tanto en prioridad de desarrollo como en el tiempo en que se realiza cada uno; además, se utilizó la tecnología AngularJS para el front end, mientras que para el back end se trabajó con el lenguaje de programación JAVA en el entorno de desarrollo Netbeans 8.2, y servicios RestFULL que permiten la conexión entre el front end y el back end. Finalmente, para la gestión de la base de datos se utilizó PostgreSQL. Sobre el sistema se han ejecutado pruebas de funcionamiento y usabilidad. Para obtener los resultados de la usabilidad del sistema se aplicó una encuesta de usabilidad a un grupo de 20 usuarios con distintos roles dentro del sistema, de los cuales el 90.14% manifestaron que pudieron usarlo fácilmente. Las pruebas de funcionamiento se aplicaron en el módulo de autenticación de usuarios, considerando que existen varios roles. Como resultado de las pruebas de funcionamiento se obtuvo un funcionamiento adecuado del módulo, en base a lo esperado por los usuarios.

Study on Improving Overall Efficiency of Front-end Power Supplies by Employing Method of Surge Energy Recycling

2012 ◽  
Vol 132 (7) ◽  
pp. 684-690 ◽  
Author(s):  
Toshikazu Okubo ◽  
Hiroyuki Shoji ◽  
Hideho Yamamura ◽  
Shinobu Irikura ◽  
Naoki Maru
Keyword(s):  
Power Supplies ◽  
Front End ◽  
Overall Efficiency
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