Call For Paper Volume:9 Issue:5 May'2022 |

Modification of straightning machine

Publication Date : 08/04/2017

DOI : 10.21884/IJMTER.2017.4112.CRUEI

Author(s) :

Riddhiraj Prashant Deshmukh , Roshan Hiraman Deore , Kalyan Vijay Chavan , Amol Ramarav Pawar , Vijay Baliram Sarode.

Volume/Issue :
Volume 4
Issue 4
(04 - 2017)

Abstract :

Work on straightening machine is carried out at JINDAL SAW LTD. The machine consists of six-rolls with individual feed mechanism for each roll. The capacity of machine is to straighten the tubes of diameter 33mm to 216mm. The machine is manufactured in house at US plant and imported to Nasik plant. The problem arising in the machine is the tubes below 88.9 mm were not being straightened on the machine and the tubes were damaged after passing through the rollers. On initial study it is found that the center of the pin & rollers are not aligned. Hence after aligning centerline of pin & roller, it is observed that pin hole in the base plate is eccentric. An eccentricity can be overcome by machining the base plate by dismantling the complete machine. The process of reworking is very cumbersome, costly & time consuming. So an eccentric center pin is designed to match the centers of upper roller and bottom roller which can apply required pressure to straight the tube while passing through rollers. The designing of pin involves selection of material for pin, deciding dimensions after measurement of actual eccentricity & calculating stresses for each selected material.

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Modification of straightning machine

April 4, 2017