TMT successfully relies on SIGMASOFT® Virtual Molding
Company: Zhuzhou Times New Material Technology Co., Ltd. (CRRC Group)
SIGMASOFT® user: since 2014
Main application: Evaluation and optimization of Vulcanization processes
License: Elastomer, Thermoplast (floating)
Website EN: https://www.zz-tmt.com/
Vulcanization is the most important step in the manufacturing and processing of rubber products. Vulcanization time directly affects the performance of the final product. Compared with a conventional simulation, SIGMASOFT® Virtual Molding can better predict the vulcanization time of rubber and reduce the number of production trials and the cost of product development.
A famous rubber product manufacturer in China, Zhuzhou Times New Material Technology Co., Ltd. (TMT), is mainly engaged in the research, development and engineering application of polymer materials, such as vibration reduction and noise reduction, lightweight, etc. Their products involve rubber, plastic, composite materials and more and are mainly used in the fields of rail transit, automobile, new energy and building vibration reduction and isolation.
TMT designed a rubber auxiliary spring, which has a circular shape composed of four layers of metal spacers and three layers of rubber. Its maximum outer diameter is 320 mm, and its height is 214 mm. The main purpose of this example is to evaluate the best vulcanization time of the product. Thus, the product development cycle should be effectively shortened, and the cost of product development reduced.
Based on years of experience of their project engineers, they first used the conventional simulation to predict the vulcanization time of the product. Because of the complex product shape and because the post vulcanization effect cannot be considered in the calculation, using the conventional simulation will lead to a long product development cycle and high development costs. Therefore, TMT decided to change the method to SIGMASOFT® Virtual Molding, which considers many factors during the simulation. It accurately analyzes the reasonable vulcanization time of 55 min, 60 min and 70 min in a short time, and accurately predicts the corresponding degree of vulcanization in the product. For the auxiliary spring the final vulcanization degrees for the different vulcanization times are shown in the following pictures.