聚乙烯管材热熔对接接头抵抗慢速裂纹扩展性能评价

doi:10.19491/j.issn.1001-9278.2020.09.009

中国塑料 ›› 2020, Vol. 34 ›› Issue (9): 51-55.DOI: 10.19491/j.issn.1001-9278.2020.09.009

聚乙烯管材热熔对接接头抵抗慢速裂纹扩展性能评价

王志刚¹, 杨波¹, 王靖然², 徐青永¹, 申洋¹

^1.广州特种承压设备检测研究院，广州 510663
^2.广东工业大学，广州 510006

收稿日期:2020-02-12 出版日期:2020-09-26 发布日期:2020-09-25
基金资助:
国家市场监督管理总局科技项目(2019MK159);广州市市场监督管理局科技项目(2019KJ15)

Evaluation of Slow Crack Growth Resistance for Polyethylene Pipe Butt-Fusion Welded Joint

WANG Zhigang¹, YANG Bo¹,WANG Jingran², XU Qingyong¹, SHEN Yang¹

^1.Guangzhou Special Pressure Equipment Inspection and Research Institute, Guangzhou 510663, China
^2.Guangdong University of Technology, Guangzhou 510006, China

Received:2020-02-12 Online:2020-09-26 Published:2020-09-25
Contact: WANG Zhigang E-mail:orinwang8851@163.com

摘要/Abstract

摘要：

采用应变硬化试验(SH)对不同焊接工艺下的聚乙烯管材热熔对接接头抵抗慢速裂纹扩展（SCG）性能进行评价。通过建立焊接温度梯度（190~250 ℃）、焊接压力梯度（0.6~1.4 MPa）和吸热时间梯度（40~140 s）试验，分析在不同焊接工艺参数条件下，不同聚乙烯管材热熔对接接头耐SCG性能的变化规律，探索冷焊及过焊2种典型缺陷对管材接头耐SCG性能的影响。结果表明，焊接温度、焊接压力和吸热时间都是影响管材热熔对接接头耐SCG性能的重要工艺参数，试验测得PE100, d_n110, SDR11型管材的最佳焊接参数为焊接温度230 ℃，焊接压力1 MPa及吸热时间100 s，当焊接参数选取过高或过低时，会造成管材接头出现过焊或冷焊缺陷，降低管材接头的耐SCG性能。

关键词: 聚乙烯, 管材, 应变硬化, 焊接工艺, 热熔, 对接接头, 慢速裂纹扩展

Abstract:

The strain-hardening test was adopted to evaluate the slow crack growth (SCG) resistance of polyethylene (PE) pipe butt-fusion welded joint under different welding processes. The variation rule for the SCG resistance of PE pipe butt?fusion welded joint was analyzed under different welding process parameters by establishing a welding temperature gradient between 190 and 250 °C, a welding stress gradient between 0.6 and 1.4 MPa, and an endothermic time gradient between 40 and 140 s. The effects of cold-welding and over-welding defects on the SCG resistance of PE pipe joint were investigated. The results indicated that the welding temperature, welding pressure and the endothermic time were all the important process parameters that influenced the SCG resistance of the PE pipe butt-fusion welded joints, and the optimum welding parameters could be determined as 220 °C, 1 MPa and 100 s for the PE 100 pipe (d_n110, SDR11). The selection of lower or higher welding parameters could result in the formation of cold-welding or over-welding defects in the pipe joint, thus reducing the SCG resistance.

Key words: polyethylene, pipe, strain hardening, welding process, butt-fusion, welded joint, slow crack growth

中图分类号:

TQ320.72⁺4

王志刚, 杨波, 王靖然, 徐青永, 申洋. 聚乙烯管材热熔对接接头抵抗慢速裂纹扩展性能评价[J]. 中国塑料, 2020, 34(9): 51-55.

WANG Zhigang, YANG Bo, WANG Jingran, XU Qingyong, SHEN Yang. Evaluation of Slow Crack Growth Resistance for Polyethylene Pipe Butt-Fusion Welded Joint[J]. China Plastics, 2020, 34(9): 51-55.

图/表 10

图1 聚乙烯管材慢速裂纹扩展原理图

Fig.1 Schematic diagram of polyethylene pipe slow crack growth

图2 应变硬化试验拉伸曲线图

Fig.2 Tensile curve of strain hardening test

图3 制备的试验试样

Fig.3 The prepared test samples

图4 不同焊接温度下管材对接接头对应的应变硬化模量

Fig.4 Strain hardening of the butt?fusion welded joints at different welding temperature

编号	焊接温度/℃	应变硬化模量/MPa	标准偏差	缺陷类型
1	190	49.64	1.257 4	冷焊
2	210	52.71	0.530 8	正常
3	220	53.77	0.363 3	正常
4	230	58.98	0.302 5	正常
5	250	40.78	1.137 5	过焊

表1 不同焊接温度下管材对接接头试样对应的应变硬化模量

Tab. 1 Strain hardening of the butt?fusion welded joints at different welding temperature

图5 焊接温度为230~250 ℃时管材接头表面红外光谱图

Fig.5 Infrared spectrum of pipe joint surface welded at 230~250 ℃

图6 不同焊接压力下管材对接接头试样对应的应变硬化模量

Fig.6 Strain hardening trend of the butt?fusion welded joints in different welding stress

编号	焊接压力/MPa	$应变硬化模量$ /MPa	标准偏差	缺陷类型
1	0.6	39.18	0.990 7	冷焊
2	0.8	57.50	0.660 8	冷焊
3	1.0	59.33	0.830 2	正常
4	1.2	46.08	0.690 7	过焊
5	1.4	39.03	1.059 3	过焊

编号	焊接压力/MPa	$应变硬化模量$ /MPa	标准偏差	缺陷类型
1	0.6	39.18	0.990 7	冷焊
2	0.8	57.50	0.660 8	冷焊
3	1.0	59.33	0.830 2	正常
4	1.2	46.08	0.690 7	过焊
5	1.4	39.03	1.059 3	过焊

表2 不同焊接压力梯度下管材接头对应的应变硬化模量

Tab.2 Strain hardening of the butt?fusion welded joints in different welding stress

表2 不同焊接压力梯度下管材接头对应的应变硬化模量

Tab.2 Strain hardening of the butt?fusion welded joints in different welding stress

图7 不同吸热时间下管材对接接头试样的应变硬化模量

Fig.7 Strain hardening trend of the butt?fusion welded joints in different endothermic time

编号	吸热时间/s	$应变硬化模量$ /MPa	标准偏差	缺陷类型
1	40	43.32	1.253 9	冷焊
2	70	55.10	1.008 7	冷焊
3	100	58.99	0.653 2	正常
4	120	58.74	0.486 4	过焊
5	140	44.55	0.838 4	过焊

编号	吸热时间/s	$应变硬化模量$ /MPa	标准偏差	缺陷类型
1	40	43.32	1.253 9	冷焊
2	70	55.10	1.008 7	冷焊
3	100	58.99	0.653 2	正常
4	120	58.74	0.486 4	过焊
5	140	44.55	0.838 4	过焊

表3 不同吸热时间梯度下管材接头对应的应变硬化模量

Tab. 3 Strain hardening of the butt?fusion welded joints in different endothermic time

表3 不同吸热时间梯度下管材接头对应的应变硬化模量

Tab. 3 Strain hardening of the butt?fusion welded joints in different endothermic time

参考文献 18

1	吴文栋，李茂东，涂欣.聚乙烯管热熔焊机技术现状分析[J].中国特种设备安全,2013,10:461⁃482.
	WU W D, LI M D, TU X. Analysis of the Current Situation of Polyethylene Pipe Hot⁃Melt Welding Technology[J]. China Special Safety Equipment, 2013,10:461⁃482.
2	朱志彬,杨晓翔,陈丽静.聚乙烯管道热熔接头环向裂纹应力强度因子的数值分析[J].化工机械,2013,4:497⁃809.
	ZHU Z B, YANG X X, CHEN L J. Numerical Analysis of Stress Intensity Factors of Circumferential Cracks in Hot Melt Joints of Polyethylene Pipes[J]. Chemical Machinery, 2013,4:497⁃809.
3	阳代军,霍立兴,张玉凤等.塑料压力管道热熔对接自动焊机的研制[J].中国塑料,2002,16(1):70⁃86.
	YANG D J, HUO L X, ZAHNG Y F, et al. Development of Automatic Butt Welding Machine for Plastic Pressure Pipe[J]. China Plastics, 2002,16(1):70⁃86.
4	ROSALA G F, DAYA J, WOOD A S. A Finite Element Model of the Electrofusion Welding of Thermoplastic Pipes[J]. Proceedings of the Institution of Mechanical Engineers Part E:Journal of Process Mechanical Engineering, 1997,211(E2):137⁃146.
5	中国轻工业联合会.GB/T 19809—2005塑料管材和管件聚乙烯(PE)管材/管材或管材/管件热熔对接组件的制备[S]. 2005.
6	FRANK A,PINTER G. Evaluation of the Applicability of the Cracked Round Bar Test as Standardized PE⁃pipe Ranking tool[J]. Polymer Testing, 2014, 33:161⁃171.
7	王寿超. 聚乙烯燃气管道焊接缺陷检测方法试验研究[J]. 煤气与热力, 2017, 37(12):30⁃32.
	WANG S C. Experimental Study on the Detection Method of Welding Defects of Polyethylene Gas Pipe[J], Gas&Heat, 2017, 37(12):30⁃32.
8	竺哲明, 黄伟勇, 郭伟灿. 聚乙烯管道热熔对接接头的超声相控阵检测[J].无损检测,2017, 39(1):38⁃41.
	ZU Z M, HUANG W Y, GUO W C. Ultrasonic Phased Array Inspection of Butt Joint of Polyethylene Pipe[J]. Nondestructive Testing, 2017, 39(1):38⁃41.
9	施建峰, 郭伟灿, 师俊等. 聚乙烯及其复合管道安全检测与评价方法[J], 化工学报, 2013, 64(2):757⁃764.
	SHI J F, GUO W C, SHI J, et al. Safety Inspection and Evaluation Method of Polyethylene and Its Composite pipe[J]. Journal of Chemical Engineering, 2013, 64(2):757⁃764.
10	阳代军,霍立兴, 张玉凤. 聚乙烯管道热熔对接焊工艺参数对焊接接头性能的影响[J].焊管, 2004, 27(1):17⁃20.
	YANG D J, HUO L X, ZHANG Y F. The Influence of Butt Welding Process Parameters on the Properties of PE pipe[J].Welded Pipe and Tube, 2004, 27(1):17⁃20.
11	黄学斌, 伏喜斌,徐火力.聚乙烯管道热熔对接焊接头冷拉伸性能研究[J]. 机械制造文摘⁃焊接分册, 2015,2:1⁃4.
	HUANG X B, FU X B, XU H L. Study on Cold Tensile Properties of Butt Welded Joints of Polyethylene Pipe[J]. Mechanical Manufacturing Abstracts⁃Welding Volume[J]. 2015,2:1⁃4.
12	王晓芹. 聚乙烯管材热熔对接焊拉伸性能的研究[J].甘肃科技, 2017, 33(11):53⁃54.
	WANG X Q. Study on Tensile Properties of Butt Welding of Polyethylene Pipe[J]. Gansu Science and Techno⁃logy, 2017, 33(11):53⁃54.
13	铁文安, 杨冬莹, 孙芳莉. 聚乙烯管材热熔对接接头性能的研究[J]. 工程塑料应用, 2007, 35(10):37⁃39.
	TIE W A, YANG D Y, SUN F L. Study on the properties of butt fusion joint of polyethylene pipe[J]. Application of Engineering Plastics, 2007, 35(10):37⁃39.
14	XIONGZ M, SUNJ W, WUZ J, et al. Slow Crack Growth Performance and Evaluation Method of Polyethylene Pipe[J]. China Plastics Industry, 2011, 39(8):10⁃14.
15	张建国, 董俊华, 高炳军. 裂纹圆棒法测PE100管材热熔对接接头的抗慢速裂纹扩展性能[J]. 机械工程材料, 2017, 41(9):37⁃41.
	ZHANG J G, DONG J H,GAO B J. Measurement of Slow Crack Growth Resistance of Hot⁃Melt Butt Joint of PE100 Pipe by Crack Round Bar Method[J]. Mechanical Engineering Materials, 2017, 41(9):37⁃41.
16	BROMSTRUP H. PE 100管道系统[M].魏若奇,者东梅译.北京：中国石化出版社,2011.
17	唐岩, 毕丽景, 李延亮. PE管材发生慢速裂纹扩展的影响因素[J]. 合成树脂及塑料, 2003,20（3）：52⁃54.
	TANG Y, BI L J, LI Y L. Factors Influencing Slow Crack Growth of PE Pipe[J]. Synthetic Resin and Plastics, 2003,20（3）：52⁃54.
18	柴永庆, 王群涛, 何雪莲,等. 管材树脂耐慢速裂纹增长性能快速评价方法[J]. 合成树脂及塑料, 2009,26(4):81⁃84.
	CHAI Y Q, WANG Q T, HE X L, et al. A Fast Evaluation Method for The Slow Crack Growth Resistance of Pipe Resin[J]. China Synthetic Resin and Plastics, 2009,26(4):81⁃84.

[1]	李果, 朱惠豪, 马玉录, 王玉, 吉华建, 谢林生. 导热型微孔透气薄膜的制备及性能研究[J]. 中国塑料, 2022, 36(7): 14-20.
[2]	周舒毅, 朱敏, 刘忆颖, 曹舒惠, 蔡启轩, 聂慧, 张玉霞, 周洪福. 高分子止血材料研究进展[J]. 中国塑料, 2022, 36(7): 74-84.
[3]	吴雄杰, 朱东波, 孙江波, 高龙美, 储雨, 程劲松, 谢爱迪. 聚乙烯/纳米硫酸钙粉体复合软包装应用性能研究[J]. 中国塑料, 2022, 36(6): 10-15.
[4]	雷育杰, 陈明焕, 王洁瑶, 陈旺治, 李磊. 回收聚乙烯的交联发泡及其产品性能研究[J]. 中国塑料, 2022, 36(6): 124-129.
[5]	刘伟, 吴显, 陈小澄, 成晓琼, 张纯. 羧基化填料对聚乙烯醇/纳米纤维素水凝胶力学、导电和传感性能的影响[J]. 中国塑料, 2022, 36(6): 16-23.
[6]	张文才, 郝晓刚, 李萍, 林浩, 裴强, 丰功吉, 付兆华, 于小芳. 聚乙烯接枝马来酸酐含量对废旧聚乙烯改性沥青性能的影响[J]. 中国塑料, 2022, 36(6): 24-31.
[7]	祝景云, 衣惠君, 鄢薇, 李大伟. 合成膜专用聚乙烯树脂原料的研发[J]. 中国塑料, 2022, 36(6): 77-80.
[8]	夏云霞, 李磊, 罗章生, 朱倩沁, 何力军. 基于闪蒸法制备再生聚乙烯无纺布及其性能研究[J]. 中国塑料, 2022, 36(5): 14-18.
[9]	王轲, 龙春光. PE⁃UHMW/海泡石纤维复合材料的力学性能与摩擦学性能研究[J]. 中国塑料, 2022, 36(5): 19-23.
[10]	李福杰, 齐斌, 徐华亭, 王立梅. 交联壳聚糖/聚乙烯醇/蜗牛黏液复合膜的制备及性能研究[J]. 中国塑料, 2022, 36(5): 53-61.
[11]	温原, 毛现朋, 徐科杰. 试样厚度对聚乙烯拉伸性能的影响[J]. 中国塑料, 2022, 36(4): 43-46.
[12]	许荣霞, 魏刚, 魏莉岚, 吴洁萃, 蒋雨江. Nano⁃SiO₂及PA6复合改性PE⁃UHMW的摩擦磨损性能研究[J]. 中国塑料, 2022, 36(4): 47-52.
[13]	刘强, 卢亚红, 吴慧, 马瑜浩, 张宇鹏, 孙文潇, 张宏. 聚乙烯塑料的微生物降解[J]. 中国塑料, 2022, 36(3): 120-126.
[14]	隋振全, 毛金超, 范金石. 壳聚糖/聚乙烯醇液态地膜的制备与应用[J]. 中国塑料, 2022, 36(3): 21-25.
[15]	衡月, 薛南翔, 陈壮鑫, 雷彩红, 徐睿杰. 聚乙烯/石蜡油共混体系动态流变行为和相容性[J]. 中国塑料, 2022, 36(2): 13-18.

聚乙烯管材热熔对接接头抵抗慢速裂纹扩展性能评价

Evaluation of Slow Crack Growth Resistance for Polyethylene Pipe Butt-Fusion Welded Joint

RichHTML

PDF

可视化

摘要/Abstract

引用本文

使用本文

图/表 10

参考文献 18

相关文章 15

编辑推荐

Metrics

本文评价