welding heat input

Microstructure of large heat input welding steels with low susceptivity to weld cracking.

大线能量低焊接裂纹敏感性钢的显微组织.

The tensile strength of the joint of pulse submerged arc welding is 50 MPa higher than that of ordinary submerged arc welding, which is about 12% higher. Under the same heat input, there is failed test piece in the ordinary submerged arc welding.

脉冲埋弧焊比普通埋弧焊在抗拉强度上增50MPa，大约12%左右，普通埋弧焊在与脉冲埋弧焊同样的热输入条件下出现了不合格试件。

The results showed that Ti and Ti compound oxides could promote the formation of acicular ferrite, the low temperature toughness of high heat input welding HAZ significantly improved.

结果表明，Ti及Ti的复合氧化物具有促进晶内针状铁素体形核的能力，大热输入焊接时HAZ的低温韧性显著提高。

However, too much heat input would cause welding defects, such as undercut and bogging down.

但是热输入过大会引起焊缝出现咬边以及下榻等焊接缺陷。

Analysis on Microstructure and Properties of New-developed 610D After High Heat Input Welding by Thermal Simulation

新研制610D大热输入焊接热模拟组织性能分析

This paper, connected with practical production of ERW steel pipe, discussed the effect mechanism of the bond width, HAZ width and stream line angle caused by heat input, upsetting force and welding speed during the welding of ERW steel pipe.

本文结合生产实际论述了ERW焊接时输入热量、挤压力、焊接速度对熔合线宽度热影响区宽度、流线上升角的影响机理。

Because of high thermal conductivity, welding of copper and its alloys is usually difficult by conventional fusion welding processes. The heat input required is much higher than that in almost other materials, and the welding speed is quite low.

由于铜及其合金具有很高的导热系数，使用传统的熔焊方法焊接通常是很困难的，焊接过程中需要很高的能量输入，而且焊接速度较低。