大线能量焊接

1
High Heat Input Welding
...大线能量焊接; 氧化物冶金; 焊接热影响区; 晶粒细化 [gap=1244]Key words: high strength ship plate steel; high heat input welding; oxide metallurgy; HAZ; grain refinement ..
2
high heat input
...大线能量焊接; 建筑钢[gap=891]Key words: fire-resistant; weathering; mechanical performance; weldability; high heat input; construction steel...

1
对武钢研制的大线能量焊接耐火耐候建筑用钢的力学性能、焊接性能与其典型应用进行了研究。
The mechanical property, welding property and typical application of large line energy welding and constructional steel with fire and weather resistance are studied in this paper.
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硬度测试结果表明，大线能量焊接热处理后焊接接头的硬度高于小线能量焊接的焊接接头硬度。
The hardness test show that the weld hardness with high welding heat input is higher than that with low welding heat input.
3
试验结果表明，该钢具有焊接冷裂纹倾向低、可用大线能量焊接、焊后不宜进行消氢处理等特点，可用作高强度大焊接线能量用钢。
A new low alloying steel with low susceptibility to weld cold cracking has been developed for large heat input welding in pressure vessel engineering.

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