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| 车用发动机共轨管精密成形工艺与试验研究 |
| Precision Hot-die Forging Process of the Common-rail Pipe |
| Received:May 20, 2016 Revised:July 10, 2016 |
| DOI：10.3969/j.issn.1674-6457.2016.04.013 |
| 中文关键词: 精密成形 共轨管 有限元 数值模拟 |
| 英文关键词: precision forging common-rail pipe finite element numerical simulation |
| 基金项目: |
| Author Name | Affiliation | | ZHANG Bo | Navy in Datong Military Representative Office, Datong 037036, China | | GUO Ju-shou | Northern General Dynamics Group Company,Datong 037036, China | | YUAN Yu-ting | Northern General Dynamics Group Company,Datong 037036, China | | CAO Yan | Northern General Dynamics Group Company,Datong 037036, China | | YU Xia | Northern General Dynamics Group Company,Datong 037036, China | | KANG Feng | Southwest Technology and Engineering Research Institute, Chongqing 400039, China |
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| 中文摘要: |
| 目的 为了提高柴油发动机的综合机械性能和降低制造成本，采用精密成形技术来实现共轨管的制备。 方法 通过工艺分析，设计了锻件形状、分模方式、飞边槽形式以及模具主要结构，建立了共轨管精密成形的有限元模型，并初步进行了主体设备选型。 结果 通过有限元模拟，对设计的精密成形工艺进行了仿真，获得了成形过程中坯料的速度场、等效应变分布及行程-载荷曲线，揭示了共轨管成形过程中金属在型腔中的流动情况，以及成形载荷的变化情况。 结论 通过最终工艺试制，验证并确定了工艺方案，根据零件的自身特点，突破了传统以投影面最大处为分模面的工艺，为最终的生产试制提供了参考依据。共轨管锻件充型饱满， 5 个小凸台均充型完全，尺寸均满足产品的技术要求，对后续简化工艺、提升产品的性能都有较大的作用。 |
| 英文摘要: |
| In order to improve the mechanical properties and decrease the production cost of the Common-rail Pipe, precision hot forging process is employed to manufacture the part. Based on the processing analyses, shape of the forge, parting face, and mould structure were determined, and the solid model was established. With the FEM， the distributions of velocity field, equivalent Mises plastic strain and the curves of load-time were obtained. With engineer testing, the process scheme has been certified, and the Common-rail Pipe were full-filled, the measure could meet all of the product requirements. It can helpful to predigest posterior techniques and improve the mechanical properties. |
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