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| 小体积毛坯的过温挤压工艺 |
| Over-temperature Extrusion Process of Small-volume Blank |
| Received:September 10, 2014 Revised:November 10, 2014 |
| DOI：10.3969/j.issn.1674-6457.2014.06.023 |
| 中文关键词: 温挤压 热挤压 过温挤压 |
| 英文关键词: warm extrusion hot extrusion over-temperature extrusion |
| 基金项目: |
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| 中文摘要: |
| 目的 研究小体积毛坯的温挤压成形工艺。方法 介绍了温挤压和冷、热挤压工艺的特点。通过对小体积毛坯进行温挤压工艺试验,发现温挤压工艺的小体积毛坯温度降低较快,较难挤压成形,对模具寿命影响很大。提出过温挤压工艺方案,并对一种典型的小体积毛坯进行了试验。结果 采用过温挤压工艺表面质量与温挤压工艺的表面质量没有明显区别。温挤压工艺可以生产出表面高质量的小体积毛坯。结论 过温挤压工艺的提出对温挤压技术进行了补充,为小体积毛坯的制造提出了一个可行的工艺方案。 |
| 英文摘要: |
| Objective To study the warm extrusion forming process of small-volume blank. Methods Process characteristics of warm extrusion, cold extrusion and hot extrusion were introduced. Through the warm extrusion forming process test on the small-volume blank, it was found that the temperature decrease of the small-volume blank prepared by the warm extrusion process was relatively fast, leading to difficulty in extrusion forming, which had a large impact on the die life. Therefore, over-temperature extrusion process program was proposed, and a typical small-volume was tested. Results There was no significant difference in the surface quality between the products prepared by the over-temperature extrusion process and the warm extrusion process. Over-temperature extrusion process could produce small-volume blank with high surface quality. Conclusion The proposal of over-temperature extrusion process was supplementary to the warm extrusion technology, and provided a feasible process program for the manufacturing of small-volume blank. |
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