论文部分内容阅读
23—1指出下列各条中哪几条是正确的? 1.焊接调质高强钢时,应尽量采用线能量大的焊接法。 2.对于调质高强钢的焊接接头,当用线状加热法消除变形时,其最高加热温度,应控制在钢材的回火温度以下。 3.对高强钢,进行手工电弧焊时,应使用低氢焊条。 4.低氢焊条之所以好,是由于渣的剥离性能好,且不易受锈和涂料的影响。
23-1 Indicate which of the following is correct? 1. When welding quenched and tempered high-strength steel, welding with a large amount of energy should be used as much as possible. 2. For quenched and tempered high-strength steel welded joints, when the use of linear heating method to eliminate distortion, the maximum heating temperature should be controlled below the tempering temperature of steel. 3. For high strength steel, manual arc welding, the use of low hydrogen electrode. 4. The reason why the low hydrogen electrode is good is that the stripping performance of slag is good and it is not easily affected by rust and paint.