管式加热炉用TP347H与P5炉管异种钢GTAW焊接工艺研究
Research on GTAW Welding Technology for the Dissimilar Steels TP347H and P5 Furnace Tubes in Tubular Heaters
- 2024年54卷第3期 页码:146-151
纸质出版日期: 2024-03-25
DOI: 10.7512/j.issn.1001-2303.2024.03.22
扫 描 看 全 文
浏览全部资源
扫码关注微信
纸质出版日期: 2024-03-25 ,
扫 描 看 全 文
崔跃双.管式加热炉用TP347H与P5炉管异种钢GTAW焊接工艺研究[J].电焊机,2024,54(3):146-151.
CUI Yueshuang.Research on GTAW Welding Technology for the Dissimilar Steels TP347H and P5 Furnace Tubes in Tubular Heaters[J].Electric Welding Machine, 2024, 54(3): 146-151.
针对ASME SA312 TP347H奥氏体不锈钢管与ASTM SA335 P5铁素体耐热钢管的异种钢焊接存在金属稀释、碳迁移和残余应力等问题,在考虑稀释影响的基础上,选择ER309和ERNiCr-3两种焊接材料根据是否焊后热处理以及是否堆焊隔离层制定了6种焊接工艺方案,并通过焊接试验、力学性能试验和金相检验,对比分析了不同工艺下焊接接头的性能。结果表明:外观检查和RT结果均符合相关标准要求;所有试件的抗拉强度均达到标准规定的415 MPa以上,其中最大值达到505 MPa,且断后伸长率在25%以上,TP347H侧热影响区的冲击吸收功平均值为54.0~70.5 J,均满足标准规定;直接焊接法未经焊后热处理的焊接接头P5侧母材热影响区附近硬度超标,而经焊后热处理的焊接接头硬度值均满足标准要求;经焊后热处理的焊接接头碳扩散更明显,而采用ERNiCr-3焊丝进行堆焊隔离层,并进行后热处理的焊接接头碳扩散程度最小。综合分析,ERNiCr-3堆焊隔离层+后热工艺方案得到的焊接接头性能最佳,满足标准要求,且无需进行焊后热处理,更适合现场焊接。
Welding between ASME SA312 TP347H austenitic stainless steel pipes and ASTM SA335 P5 ferritic heat-resistant steel pipes presents challenges such as metal dilution
carbon migration
and residual stress. Considering the impact of dilution
two welding materials
ER309 and ERNiCr-3
were selected to create six welding procedure specifications based on whether post-weld heat treatment (PWHT) was applied and whether a cladding layer was welded. These specifications were tested through welding experiments
mechanical property tests
and metallographic examination to analyze the performance of welded joints under different procedures. The results show that the appearance inspection and RT results meet the relevant standards. The tensile strength of all specimens exceeds the standard requirement of 415 MPa
with a maximum reaching 505 MPa
and the elongation after fracture is above 25%
fulfilling the standard requirements. Impact test results also meet the standard requirements
with the average impact absorbed energy of the TP347H side heat-affected zone ranging from 54.0 to 70.5 J. The hardness near the P5 side base metal heat-affected zone of the welded joint without PWHT exceeds the standard in the direct welding method
while the hardness values of welded joints with PWHT meet the standard requirements. Carbon diffusion is more pronounced in welded joints with PWHT
while the least carbon diffusion occurs in welded joints that use ERNiCr-3 welding wire for cladding and undergo post-weld heat treatment. Based on the comprehensive results
the welding joint performance is optimal with the ERNiCr-3 cladding layer and post-weld heat treatment process
meeting the standard requirements without the need for PWHT
making it more suitable for on-site welding.
TP347HP5异种钢焊接焊后热处理后热处理堆焊隔离层
TP347HP5dissimilar steel weldingpost-weld heat treatmentpost-heating treatmentoverlay cladding layer
李薇,潘有江,管式加热炉(第二版[M].北京: 中国石化出版社, 2021.
ASME Boiler and Pressure Vessel Code, Section Ⅱ Materials Part A Ferrous Materials Specifications[M]. New York:American Society of Mechanical Engineers,2019.
崔跃双, 董雷. N08800与F11 CL.3的异种钢焊接工艺研究[J]. 电焊机, 2021,51(1):78-82.
CUI Y S, DONG L. Research on welding technology of N08800 and F11 CL.3 dissimilar steels[J]. Electric Welding Machine, 2021,51(1):78-82.
中国机械工程学会焊接学会. 焊接手册[M].北京: 机械工业出版社, 1992.
王沛.火电厂TP347H与T91异种钢现场焊接工艺研究[J]. 甘肃科技, 2016,32(13): 33-35.
WANG P. Research on on-site welding process of TP347H and T91 dissimilar steel in thermal power plants[J]. Gansu Science and Technology, 2016, 32(13): 33-35.
秦伯雄. 珠光体钢与奥氏体钢接头的焊接[J]. 焊接技术,1989(04):31-35.
QIN B X. Welding of joints between pearlite steel and austenitic steel[J]. Welding Technology,1989(04):31-35.
黄向红.锅炉供水预热器的焊接工艺[J].焊管, 2011,34(03):44-47.
HUANG X H. Welding Procedure of Preheater for Boiler Feed Water[J]. Welded Pipe and Tube, 2011,34(03):44-47.
陈伯蠡.焊接工程缺欠分析与对策[M].北京:机械工业出版社,1998.
邱毅强,杨云,陈孙艺.耐热钢P5与不锈钢304H的焊接[J].压力容器,2004(10):29-31.
QIU Y Q, YANG Y, CHEN S Y. Welding of Heat Resisting Steel P5 and Stainless Steel 304H[J]. Pressure Vessel Technology,2004(10):29-31.
中石化第四建设有限公司. SH/T3526-2004石油化工异种钢焊接规范[M]. 北京: 中国石化出版社,2004.
ASME Boiler and Pressure Vessel Code, Section Ⅱ Materials Part C Specifications for Welding Rods Electrodes and Filler Metals[M]. New York:American Society of Mechanical Engineers,2019.
王英辉,王宝生,付向南.奥氏体钢与珠光体钢异种钢的焊接研究[J].吉林化工学院学报,2011,28(7):45-51.
WANG Y H,WANG B S,FU X N. Research on the weldability between austenitic steel and pearlite steel[J]. Journal of Jilin Institute of Chemical Technology,2011,28(7):45-51.
王黎明,王晓,左秀珍, 等. 钢零件焊接预热温度的确定[J].黑龙江八一农垦大学学报, 2002(03):40-43.
WANG L M,WANG X,ZUO X Z,et al. The Determination Parts on Weld Preheating Temperature of The Steel[J]. Journal of Heilongjiang Bayi Agricultural University, 2002(03):40-43.
中石化第十建设有限公司. SH/T3562-2017石油化工管道工厂化预制加工及验收规范[M].北京:中国石化出版社, 2017.
相关作者
相关机构