航天推进技术研究院主办
[1]宋 凡,唐 磊,杨卫国,等.钛管全位置氩弧焊接头力学性能数据分析[J].火箭推进,2020,46(04):97-102.
SONG Fan,TANG Lei,YANG Weiguo,et al.Data analysis of mechanical performance for all-position TIG joints of Ti tube[J].Journal of Rocket Propulsion,2020,46(04):97-102.
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SONG Fan,TANG Lei,YANG Weiguo,et al.Data analysis of mechanical performance for all-position TIG joints of Ti tube[J].Journal of Rocket Propulsion,2020,46(04):97-102.
钛管全位置氩弧焊接头力学性能数据分析
《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]
卷:
46
期数:
2020年04期
页码:
97-102
栏目:
工艺与材料
出版日期:
2020-08-18
- Title:
- Data analysis of mechanical performance for all-position TIG joints of Ti tube
- 文章编号:
- 1672-9374(2020)04-0097-06
- Keywords:
- Ti tube; all-position TIG; mechanical performance; base metal; fluctuation
- 分类号:
- TG456.7
- 文献标志码:
- A
- 摘要:
- 为明确工艺件来源和规格因素对焊件性能合格率的作用,对五年来44批次的钛管焊接试验历史数据进行了分析。当生产批次不同时,母材抗拉强度和冲击韧性的波动程度分别可达±19.1%和±38.1%; 当批次相同但出自不同根余料时,波动程度分别可达±6.2%和±13.6%; 焊接热过程会使性能的均值降低且波动增大,相较而言冲击韧性改变更明显。当工艺件外径逐渐增大时,母材抗拉强度均值基本恒定,而冲击韧性均值逐渐提高,且波动程度先增大后减小; 在经历相同焊接热过程后,只有小外径焊件的冲击韧性波动程度明显增大。提出了两类改进建议,一是将工艺件限定在同一根钛管上取材,二是将冲击韧性的合格指标从固定值改为与外径成正比的系列值。
- Abstract:
- In order to clarify the effect of the source and specification of process parts on the qualification rate of weld performance, the historical data of all-position TIG joints of Ti tube during recent 5 years and 44 batches were analyzed.When the production batches are different, the fluctuation of the tensile strength and impact toughness for the base metal can reach ±19.1% and ±38.1%, respectively.When the tubes are from the same batches but different roots, the fluctuations can reach ±6.2% and ±13.6%, respectively.The heat process of welding will reduce the average value of the performance and increase the fluctuation, and the impact toughness will change more obviously.When the outer diameter of the process part gradually increases, the average tensile strength of the base material is constant, while the average impact toughness gradually increases first and then decreases.After experiencing the same heat process of welding, only the impact toughness fluctuations of small-diameter weldments increase significantly.Two types of improvement suggestions are proposed.One is to limit the process parts to the same Ti tube,and the second is to change the qualification index of impact toughness from a fixed value to a serial values proportional to outer diameter.
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备注/Memo
收稿日期:2019-12-29; 修回日期:2020-03-17
基金项目:上海市科学技术委员会资助课题(17DZ2280800)
作者简介:宋凡(1989—),男,硕士,研究领域为空间推进系统激光焊接工艺
更新日期/Last Update:
2020-07-30