In this article, technology for producing wire and rod solder from 52In-48Sn alloy has been developed and investigated in the conditions of small-scale production. The use of direct extrusion of wire and rods instead of traditional technology for producing solder, which includes pressing, rolling and drawing, can significantly reduce the fleet of required equipment. Using only a melting furnace and a hydraulic press, solder wires and rods can be produced in various sizes. Shortening the production cycle allows you to quickly fulfill small orders and be competitive in sales. This article develops a mathematical model of direct extrusion, which allows you to calculate the extrusion ratio, extrusion speed and pressing force. The results of modeling the process of extrusion of wire Ø2.00 mm and rods Ø8.0 mm made of 52In-48Sn alloy are presented. The temperature of the solder and the tool is simulated in software QForm based on the finite element method. Experimental results of manufacturing Ø2.0 mm solder wire and Ø8.0 mm rods are presented. The microstructure of the direct extruded solder is a eutectic of phases γ and β. Energy-dispersive X-ray spectroscopy (EDS) mapping of the 52In-48Sn alloy showed that the solder obtained by direct extrusion has a uniform distribution of structural phases. The developed technology can be used in the manufacture of wires and rods from other low-melting alloys.
Defining of process technological parameters is very important for low temperature solder extrusion. A mathematical model of low temperature solder wire and rods direct extrusion, which allows determining the energy-power process parameters, has been developed. The validation of the mathematical model for adequacy was checked during a laboratory experiment on a hydraulic press. In laboratory the force and speed of pressing were measured and recorded using the data collection system installed on it. The validation of the model for adequacy was carried out by pressing 08.00 and 015 mm rods and 02.00 mm wire and showed fine precision of calculations with experimental measurements. The error did not exceed 10%. The resulting mathematical model was used for analytical studies of Sn-In alloy bars and wires direct pressing technological modes. Calculations have shown that a decrease in the finished rod (wire) diameter from 16.00 to 2.00 mm while maintaining the workpiece size 030.00 mm leads to an increase in the pressing force from 86 kN to 131 kN at the initial moment of pressing. It increases the elongation ratio from 4 to 256. The pressing force of 08.00 mm rod increases from 25 to 171 kN after an increase in the diameter of the workpiece from 12.0 to 40.0 mm. Analytical studies on the model showed that it is possible not only to study the pressing process in order to understand the mechanisms of forming the mechanical and operational properties of the finished rod (wire), but also to design resource-saving pressing modes for various product gauges, to carry out substantiated selection of the required equipment and accessories.
Кандидат технических наук, научный сотрудник кафедры рекреационной географии и туризма, Московский государственный университет им. М.В. Ломоносова
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.