Transactions of Materials and Heat Treatment

Title：Process optimization on warm extrusion housing part based on metal flow line

Authors： Li Chao Chen Liyu Jiang Tongzhu Zhang Tailiang Wang Yun

Unit： Jiangsu University Jiangsu Winner Machinery Co. Ltd.

KeyWords： housing warm extrusion metal flow line triangular punch friction extrusion speed

ClassificationCode：TG376.1

year,vol(issue):pagenumber：2017,42(1):143-148

Abstract：

Metal flow line has a great influence on performance of extrusion part during volume forming process. To solve the poor metal flow line of warm extrusion housing part, the whole forming process of metal flow line was analyzed, and the influences of forward extrusion technique, punch shape and size of backward extrusion, friction force and extrusion speed on metal flow line were studied. Furthermore, an improvement scheme was proposed and verified by the experiment. The experiment results show that the triangular punch is the best guidance for metal flow line compared to the trapezoidal punch and flat punch. On the premise of an appropriate channel size, the values of bottom inclined angle of triangular punch, the top arc radius and bottom diameter of guidance cone are better to be larger. Besides, the appropriate conical angle of forward extrusion female die is 60°-90°. And the friction has a greater influence on metal flow line, the bigger the friction is, the worse the metal flow line is. However, the extrusion speed has little effect on metal flow line.

Funds：

江苏省科技成果转化专项资金(SBA2014030056)； “青蓝工程”学术带头人（苏教师(2014)23号）；江苏省重点研发计划(BE2015134)；镇江市重点研发计划(GY2015008)

李超（1992-），男，硕士研究生 E-mail：394708557@qq.com 通讯作者：王匀（1975-），男，博士，教授 E-mail：wangyun@ujs.edu.cn

Reference：

[1]李科，何志兵，沈海，等. 等速万向节总成的设计方法[J]. 轴承，2006，(9)：37-39.

Li K，He Z B，Shen H，et al. Master design of constant velocity joint assemblies[J]. Bearing，2006，(9)：37-39.

[2]中国锻压协会. 汽车典型锻件生产[M].北京：国防工业出版社，2009.

Confederation of Chinese Metalforming Industry. Typical Automobile Forging Part Production[M]. Beijing：National Defense Industry Press，2009.

[3]李天兴，张迅雷，傅建中，等. 轿车用齿坯精锻工艺参数与模具结构对金属流线的影响[J]. 机械传动，2015，(10)：154-157.

Li T XFu J Z，2015，(10)：154-157.

[4]柏立敬，张治民. 方形三通件多向加载过程金属流动研究[J]. 热加工工艺，2008，37(5)：64-66.

Bai L J，Zhang Z M. Study on metal flow in multi-extrusion load forming process of square three-cavities[J]. Hot Working Technology，2008，37(5)：64-66.

[5]张玉勋，易幼平，李云，等.铝合金机轮轮毂锻造流线仿真与实验研究[J].中南大学学报:自然科学版，2011，42(7)：1967-1972.

Zhang Y XLi Y：Science and Technology，2011，42(7)：1967-1972.

[6]Kim Y T, Ikeda K, Murakami T. Metal flow in porthole die extrusion of aluminium[J]. Journal of Materials Processing Technology, 2002, 121(1):107-115.

[7]Kammler M, Hadifi T, Nowak M, et al. Experimental and numerical investigations on metal flow during direct extrusion of EN AW-6082[J]. Key Engineering Materials, 2011, 491(12):137-144.

[8]温景林，丁桦. 有色金属挤压与拉拔技术[M]. 北京：化学工业出版社，2007.

Wen J L，Ding H. Extrusion and Drawing Technology for Non-ferrous [M]. Beijing：Chemical Industry Press，2007.

[9]赵震，陈军，吴公明. 冷温热挤压技术[M]. 北京：电子工业出版社，2008.

Zhao Z，Chen J，Wu G M. Cold Warm and Hot Extrusion Technology [M]. Beijing：Publishing House of Electronics Industry，2008.

Service：

【This site has not yet opened Download Service】【Add Favorite】