The effect of forming parameter on multi-stage cold forging with 20MnTiB steel
| Autor: | Liu Baixuan, Sun Hongxing, Liu Hua, Zhiling Xiao, Liu Dan, Liu Guanghui |
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| Rok vydání: | 2015 |
| Předmět: |
0209 industrial biotechnology
Materials science Mechanical Engineering Metallurgy 02 engineering and technology Deformation (meteorology) Strain rate 021001 nanoscience & nanotechnology Microstructure Compression (physics) Industrial and Manufacturing Engineering Forging Computer Science Applications Degree (temperature) 020901 industrial engineering & automation Control and Systems Engineering Ferrite (iron) Pearlite 0210 nano-technology Software |
| Zdroj: | The International Journal of Advanced Manufacturing Technology. 83:1189-1197 |
| ISSN: | 1433-3015 0268-3768 |
| DOI: | 10.1007/s00170-015-7659-0 |
| Popis: | The study aims to obtain the effect of forming parameters on multi-stage cold forging with 20MnTiB steel by performing a series of physical simulation and then verified by producing experiment of high-strength bolt. Physical simulation was performed through Gleeble 3500 compression tests; the mainly forming parameters such as strain rate (100∼101), deformation degree (20∼80 %), and number of stages were discussed. The results showed that the strain rate has little effect on the microstructure and the mechanical property. However, the number of stages and the deformation degree have an appreciable effect on the sample microstructure, of which the pearlite grain is fined and ferrite grain is elongated as fiber. The adiabatic thermal temperature rises from 20 to 142 °C with a 60 % deformation degree at a strain rate of 10 s−1. Finally, the deformation properties of bolts can compare with the physical simulation results. |
| Databáze: | OpenAIRE |
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