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文章编号：1001-4934(2016)04-0036-05
Die and Mould Technology No, 4 2016
快运铁路棚车车顶弯梁修形工艺研究及拉弯模具设计
蔡廷军，武耀龙，曾威雄
（中车齐齐哈尔交通装备有限公司，黑龙江齐齐哈尔161002）
摘要：通过对快运铁路棚车车顶弯梁修形工艺的研究，发现无论采用风压力、火焰加热还是利用压形模具进行修形，其效果均不理想，只能通过拉弯成形来保证产品质量。在对车顶弯梁拉弯模具进行设计时，采用了钢板拼接结构，与传统的铸造拉弯模具相比，降低了模具制造成本，缩短了模具制造和调试周期，并利用试制期间的试验数据，优化了拉弯模具的型面参数并对拉弯模具进行调修和试验验证，取得了显著效果，为快运棚车的批量生产提供了可靠保证。
关键词：快运铁路棚车车顶弯梁；修形；拉弯模具
中图分类号：TG386
文献标识码：B
Research on the shape modification process and stretch-bending die design for roof bow of
coveredexpress railwaywagon
CAI Ting-jun, WU Yao-long, ZENG Wei-xiong
Abstract: Through the shape modification process research on roof bow of express railway covered wagon,it isfound that modification shape effect with wind pressure,flame heating or the shape pressing die are not satisfactory. Product quality can only be ensured by stretch bending.The stcel plate splicing structure is used to the stretch-bending die for roof bow. Compared with the traditional casting stretch bending die, it can reduce the mold manufac-turing costs, shorten the mould manufacturing and debugging period.Profile parameters of thc stretch bending die is optimized by using the test data during the trial production, and then the stretch bending die is repaired and test. Significant cffect is achieved, which pro-vides strong guarantee for themass production of the express railway covered wagon.
Keywords: roof bow of express railway covered wagon; shapc modification; stretch-bending dic
技术背景 1
随着轨道交通事业的飞速发展和铁路货车速度、重载和可靠性的全面提升，3段圆弧结构收稿日期：2016-03-29
作者简介：蔡廷军（1985一），男，工程师。万方数据
弯梁（见图1)被应用于快运铁路棚车车体的制造。与传统的P70、P64型通用棚车的弯梁相比，快运棚车车顶弯梁的特点是其结构由3段圆弧构成，而传统棚车的车顶弯梁是1段圆弧结构，且其帽顶在弯曲内侧（传统棚车的车顶弯