Thank you for your attention to ZhongYuan water supply equipment [Knowledge News Information] column! The summer solstice is one of the early confirmed solar terms in the 24 solar terms. In the seventh century BC, the ancestors used Tugui to measure the sun's shadow, and determined the summer solstice. Although the summer solstice indicates that the hot summer has arrived, it is not hot yet. The temperature will continue to rise for a period of time after the summer solstice. It will be hot in about twenty or thirty days. After the summer solstice, the ground is strongly heated and the air convection is vigorous, and thunderstorms often form from afternoon to evening. ZhongYuan remind you Construction of chemical and municipal pipelines in power plants industry customer friends: the weather is hot, pay attention to heatstroke prevention! Thank you for your attention to the Gongyi Zhongyuan Innovation Pipeline Equipment Co., Ltd website (http://ceshi5.66554433.cn)!

伸缩接头在焊前怎样预热

Time:2019/4/8 14:09:07

    法兰限位弹性接头在运用前要进行焊前的预热,这样能够大大提双法兰限位弹性接头的功能*,进步工作效率。那么在进行焊前预热的时分又该怎样进行呢?弹性接头进行焊前预热的焊件,其层间温度应在规则的预热温度规模内。

 

    当焊件温度低于0摄氏度是,钢材的焊缝应在始焊处100mm规模内预热到15摄氏度以上。对有应力腐蚀的焊缝,应进行焊后热处理。非奥氏体异种钢焊接时,应按焊接性较差的一侧钢材选定焊前预热和焊后热处理温度,但焊后热处理温度不该超越另一侧钢材的临界点。

    调制钢焊缝的焊后热处理温度,应低于其回火温度。双法兰限位弹性接头焊前预热及焊后热处理时,应丈量和记载其温度,测温点的部位和数量应合理,测温外表应经计量检定合格。对简单发生焊接推迟裂纹的钢材,焊后应及时进行焊后热处理,当不能及时进行焊后热处理时,应在焊后当即均匀加热至200-300℃。

    斌进行保温锾冷,其加热规模应与焊后热处理要求相同。双法兰限位弹性接头的原料:双法兰限位弹性接头的套管和法兰盘的资料为20;螺栓资料为35;制动螺钉资料为2CR13.橡胶圈资料:介质为油类的丁晴橡胶I-2,介质为水用氯丁橡胶III-2.