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WDB620焊接性试验研究 总被引:1,自引:0,他引:1
本文从理论上对WDB620钢的焊接性进行了简要分析,并通过对该钢进行焊接抗裂性试验及不同线能量大小的焊接接头性能试验,说明WDB620钢属低焊接裂纹敏感性钢,具有良好的焊接性。 相似文献
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超低碳贝氏体钢是具有高强度高韧性的新型钢种,它的合金元素含量少,含碳量又低,具有较好的焊接性能,采用插销试验研究了DB590钢焊接冷裂纹敏感性,同时用扫描电镜分析该钢插销试样的冷裂纹断口形貌。试验表明该钢具有优良的抗冷裂性能。 相似文献
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通过对新型高强度耐大气腐蚀乙字钢焊接性分析、焊接工艺试验,检验分析了焊接接头的性能,确定了合适的焊接工艺参数、焊接材料,证明了攀钢生产的YQ450NQR1高强度耐大气腐蚀乙字钢具有良好的焊接性。 相似文献
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介绍了南钢气保焊丝用钢ER70S-6热轧盘条的整个研究过程,通过工业化试验,分析了钢的化学成分、力学性能对钢材后续工艺及成品焊丝性能的影响,指出了钢的纯净度、微合金化处理,是进一步提高气保焊丝焊接工艺性能的关键。 相似文献
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喷射成形焊接高速钢与不锈钢 总被引:4,自引:0,他引:4
探索了M2高速钢与不锈钢(18-8)的喷射成形焊接工艺,用扫描电子显微镜(SEM)和SEM/EDX研究了焊接面的合金元素分布和组织结构特征。结果表明用喷射成形焊接高速钢和不锈钢有良好的工艺焊接性能。 相似文献
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G. Magudeeswaran 《钢铁研究学报(英文版)》2010,17(5):51-56
Quenched and tempered (Q&T) steels are prone to hydrogen induced cracking in the HAZ after welding. Austenitic stainless steel (ASS) welding consumables are traditionally used for welding of high hardness Q&T steels as they have higher solubility for hydrogen. The use of stainless steel consumables for a non stainless steel base metal is not economical. In recent years, the developments of low hydrogen ferritic steel (LHF) consumables that contain no hygroscopic compounds are utilized for welding of Q&T steels. The armour grade Q&T steel joints fabricated using LHF filler exhibited superior joint efficiency due to preferential ferrite microstructure in the welds and also they offered required resistance to HIC. However, the combat vehicles used in military operations will be required to operate under a wide range of road conditions ranging from first class to cross country. Structural components in combat vehicles are subjected to dynamic loading with high strain rates during operation. Stress loadings within the vehicle hull of these vehicles are expected to fluctuate considerably and structural cracking especially in welds during the service life of these vehicles can lead to catastrophic failures. Under these conditions fracture behaviour of high strain rate sensitive structural steels can be better understood by dynamic fracture toughness (K1d). Hence, an attempt was made in this paper to study dynamic fracture toughness (K1d) of the armour grade Q&T steel and their welds fabricated using LHF consumables. The dynamic fracture toughness (K1d) of the armour grade Q&T steel and their welds are comparable with each other. 相似文献
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汽车板激光焊工艺研究 总被引:4,自引:0,他引:4
为拼接超宽汽车用板,对深冲钢板进行了激光焊接试验研究,结果表明,使用CO2激光焊接工艺焊速高,可以获得无变形,成形性良好的焊接接头,其力学性能和深冲加工均与母材相当。 相似文献
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针对高强船板的使用要求,结合首钢的设备工艺条件,阐述了首钢高强船板的化学成分设计思路和工艺控制要点,分析了板坯表面质量的影响因素,提出了改进方法。同时,分析了控轧控冷工艺对高强船板组织性能的影响,介绍了首钢高强船板的实物质量水平。 相似文献
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对水电站16Mn钢焊接压力管道纵向断裂和开裂的两节管节进行了断裂失效分析,并按GB1591-88《低合金结构钢》标准复验钢板的化学成分和力学性能;采用焊接热模拟技术评价焊接热影响区的缺口敏感性,冲击韧性及热应变化脆化倾向;通过斜Y坡口焊接裂纹试验,实物焊接接头的力学性能检验等方法,评价了钢板的质量和焊接工艺。 相似文献