| DILLIMAX690T高强度结构钢焊接工艺 |
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| 引用本文： | 马清波,陈增有,胡永明,胡成山.DILLIMAX690T高强度结构钢焊接工艺[J].大连交通大学学报,2012,33(3):48-50. |
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| 作者姓名： | 马清波 陈增有 胡永明 胡成山 |
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| 作者单位： | 中国北车集团齐齐哈尔轨道交通装备有限责任公司冷工艺部,黑龙江齐齐哈尔,161002 |
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| 摘 要： | 通过斜Y铁研抗裂性试验、拉伸、弯曲、低温冲击、硬度等试验方法对DILLLMA X690T(即D690T)新型高强度结构钢焊接接头的抗裂性和力学性能进行了研究.结果表明:D690T高强度结构钢有一定冷裂倾向,但在预热温度≥100℃时,选取适合的焊接材料,可避免裂纹的产生；D690T高强度结构钢的同种接头及分别与HG785E高强钢、Q345E低合金钢焊接的异种接头均具有良好的拉仲、弯曲性能和低温冲击性能；焊接热影响区的硬度偏高,在实际生产时可适当提高预热温度.
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| 关 键 词： | 碳当量 冷裂敏感指数 焊接性 抗裂性 |
Study of Welding Procedure for DILLIMAX690T High Strength Structural Steel |
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| MA Qing-bo
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CHEN Zeng-you
,
HU Yong-ming
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HU Cheng-shan.Study of Welding Procedure for DILLIMAX690T High Strength Structural Steel[J].Journal of Dalian Jiaotong University,2012,33(3):48-50. |
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| Authors: | MA Qing-bo CHEN Zeng-you HU Yong-ming HU Cheng-shan |
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| Institution: | (Cool Department of Cnr Qiqihar Railway Rolling Stock Co.,Ltd,Qiqihar 161002,China) |
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| Abstract: | Crack resistance and mechanical properties of D690T welded joints were studied through tensile,bending,low-temperature impact tests and hardness examination.The results show that the D690T high strength structural steel has certain cold cracking tendency,while preheating temperature is higher than 100℃,selecting the suitable welding material,crack can be avoided;tensile,bending and low-temperature impact properties of the joint are all excellent,and the hardness of HAZ zone is a little higher.During production,preheating temperature may be increased properly. |
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| Keywords: | Carbon Equivalent(CE) cold cracking susceptible coefficient welding ability crack resistance |
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