Abstract

Based on the analysis of quality factors of calibrated rolled products, the structural and mechanical properties of steel 20Mn2Si for cold heading of hardware products are formed. The balance is established during the preparation of gauged bars to manufacture fasteners from it. To produce gauged bars with a diameter of 7.75 mm, a new technological flow is proposed using hot rolled products with a diameter of 8.5 mm. The proposed resource-saving technology for preparing rolled steel 20Mn2Si excludes spheroidize annealing, which reduces labor and energy costs, increases the environmental friendliness of production and operational reliability of fasteners. This eliminates the possibility of quenching cracks, the need for straightening products, the risk of thread defects and reduces the cost of manufacturing long bolts. This makes it possible to significantly reduce the process chain, reduce the cost of manufacturing fasteners and meet regulatory requirements for their mechanical properties.

Details

Title
Structural and Mechanical Preparation of Rolled Products for Fasteners
Author
Pachurin, G V 1 ; Mukhina, M V 2 ; Gevorgyan, G A 1 

 Nizhny Novgorod State Technical University named after R. A. Alekseev, Minin Street, 24, Nizhny Novgorod, 603950, Russia 
 Minin Nizhny Novgorod State Pedagogical University, Chelyuskintsev street, 9, Nizhny Novgorod, 603138, Russia 
Publication year
2021
Publication date
Mar 2021
Publisher
IOP Publishing
ISSN
17578981
e-ISSN
1757899X
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2512934552
Copyright
© 2021. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.