Forming Process of Hot Precision Forging for Synchronizer Ring Based on Grey System Theory

Liang Qiang; Liu Jing

doi:10.15980/j.tzzz.2019.05.006

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Forming Process of Hot Precision Forging for Synchronizer Ring Based on Grey System Theory
Vol. 39, Issue 5, Pages: 483-486(2019)
Published： 2019 ，
DOI： 10.15980/j.tzzz.2019.05.006

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[1]梁强,刘静.基于灰色系统理论的同步器齿环的成形工艺研究[J].特种铸造及有色合金,2019,39(05):483-486.

Liang Qiang, Liu Jing. Forming Process of Hot Precision Forging for Synchronizer Ring Based on Grey System Theory. [J]. Special Casting & Nonferrous Alloys 39(5):483-486(2019)
[1]梁强,刘静.基于灰色系统理论的同步器齿环的成形工艺研究[J].特种铸造及有色合金,2019,39(05):483-486. DOI： 10.15980/j.tzzz.2019.05.006.

Liang Qiang, Liu Jing. Forming Process of Hot Precision Forging for Synchronizer Ring Based on Grey System Theory. [J]. Special Casting & Nonferrous Alloys 39(5):483-486(2019) DOI： 10.15980/j.tzzz.2019.05.006.

摘要

针对铜质同步器齿环热精锻成形的材料利用率低、成形载荷大的问题

基于FORGE软件对齿环热精锻成形工艺进行研究。基于金属塑性成形理论

分析齿环成形过程中金属的流动规律。以坯料始锻温度、摩擦因数、坯料内径和坯料高度为变量

设计了4因素4水平正交试验

获得最大成形载荷、内外飞边径向尺寸数据。结合灰色系统理论对齿环热精锻成形工艺参数进行优化

获得最优工艺参数组合并进行工艺试验。试生产结果表明

齿环充填饱满、无折叠和开裂缺陷

材料利用率提高至63.73%

验证了优化工艺参数组合和灰色系统理论优化方法的可行性。

Abstract

Aiming at the problem of low utilization rate and large forming load for the hot precision forging of the copper synchronizer ring

the hot precision forging process was analyzed by the finite element software FORGE.Based on the metal plastic forming theory

the metal flow law was analyzed during synchronizer ring forming.Four factors and four levels orthogonal experiment was performed to obtain the data of maximum forming load and radial dimension of inner and outer flash with billet temperature

friction factor

inner diameter and height of billet as design variables.The grey system theory was adopted in the parameters optimization of hot precision forging of synchronizer ring

and the optimized combination of process parameters were presented for the production.The results reveal that the synchronizer ring is filled with fullness and absence of folding defect and crack.Meanwhile

the material utilization rate is improved from 44.67% to 63.73%.The feasibility of the forming process and the grey system theory was verified sucessfully.