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钢筋焊接技术交底.doc

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钢筋焊接技 术 交 底
工程名称:洛阳歌剧院(人民会堂)
内容:
本工程钢筋焊接梁板部分采用闪光对焊,规格为Φ16、Φ18、Φ20、Φ22、柱内竖向钢筋采用电渣压力焊,钢筋规格Φ20、Φ22、 Φ25三种。
一、材料、机具设备要求:
1、钢筋必须是两证齐全,符合设计要求,电渣压力焊剂必须
有出厂合格证 。
2、手工电渣压力焊设备:焊接电源、控制箱、焊接夹具、焊接盒等。
3、闪光对焊焊机、钢丝刷、自来水等。 
二、操作工艺:
1、闪光对焊:现场连续闪光对焊的工艺过程包括:连续闪光和顶锻过程,施焊时,先闭合一次电路,使两钢筋端面轻微接触,此时端面的间隙中既喷射出火花般溶化的金属微粒-闪光,接着徐徐移动钢筋使两端面仍保持轻微接触,形成连续闪光到预定的长度,使钢筋两端头加热到将近熔点使,就以一定的压力迅速进行顶锻,先带电
顶锻,再无电顶锻到一定长度,焊接接头即告完成。
2、手工电焊压力焊:采用直接引弧法,先将上钢筋与下钢筋接触,通电后,既将上钢筋提升2∽4mm引弧,然后连续缓提几毫米,使电弧稳定
Welded steel base and technology exchange
Project Name: Luoyang Opera House (People's Hall)
Content:
The slab of reinforced parts using flash butt welding, specifications for the Φ16, Φ18, Φ20, Φ22, vertical steel column using electroslag welding, steel specifications Φ20, Φ22, Φ25 of three.
One, materials, machinery and equipment requirements:
1, bar the two cards must be complete and meet the design requirements, electroslag flux must
With a factory certificate.
2, hand electroslag welding equipment: welding power supply, control box, welding fixtures, welding boxes.
3, flash butt welding machine, steel wire brush, water and so on.
Second, the operation process:
1, flash butt welding: on-site continuous flash butt welding process, including: continuous flash, and upset the process of welding operation, the first one closed circuit, so that the two mild steel face contact, this time face not only the gap in the spark-like jet molten metal particles - flash, then slowly move the bar to both ends of the surface remains small contact form to a predetermined length of continuous flash, so that both ends of the first steel heated to nearly the melting point so that, to a certain degree of pressure on quickly upset, the first charged
Upset, no electricity upset to a certain length of the welded joint is completed.
2, manual welding pressure welding: by direct arc method, first, on contact with steel and reinforced, is powered not only will the upgrade 2 ∽ 4mm steel arc and then slow to mention a few millimeters a row, so that arc stability
 

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