彩钢棚屋面檩条系统装置注意事项
天物彩板专注彩涂卷行业17年——彩钢棚屋面建设原材料_博兴彩钢板柜台制作厂家请拨打网站上方电话咨询
檩条安装应在钢支撑拉杆、水平支撑和柱间支撑安装完毕，钢结构主体调整完毕后暂停。檩条支架按图示尺寸焊接在钢梁上，檩条支架按线路焊接固定。同柱檩条支架的焊接位置应在一条直线上，并与钢梁柱垂直。
对于坡度小于1:12.5的屋面，檩条安装时应注意消除钢梁挠度引起的屋面不平顺。檩条之间的拉杆对檩条起稳定作用。安装时，应拧紧檩条两侧拉杆两端的螺母，使檩条拉直。必须由认证焊工停止焊接操作。
采用直径为3.2的E4303焊条；焊机采用交流焊机，焊接电流100~130a。焊接前，检查焊条质量证明书，调整焊机电流。检查焊接部位表面质量，合格后方可进行焊接。焊条应存放在单调、通风良好的地方。
焊缝尺寸应根据施工图纸进行施工。防止雨天在室外焊接。焊接后应暂停对焊缝外观质量的目视检查。焊缝焊接波应均匀，无裂纹、未熔合、夹渣、咬边、烧穿等缺陷。焊接后，应清洁涂层，并涂覆两层
The purlin installation shall be suspended after the installation of steel support ties, horizontal supports and inter column supports and the adjustment of the main body of the steel structure. The purlin bracket shall be welded on the steel beam according
to the dimensions shown in the figure, and the purlin bracket shall be welded and fixed according to the line. The welding position of purlin brackets in the same column shall be in a straight line and perpendicular to the steel beam column.
For the roof with a slope less than 1:12.5, pay attention to eliminate the roof irregularity caused by the deflection of steel beam during purlin installation. The tension bar between purlins plays a stabilizing role on the purlin. During installation,
the nuts at each end of the tension bar on both sides of the purlin shall be tightened to straighten the purlin. The welding operation must be stopped by the certified welder.
E4303 welding rod with diameter of 3.2 is adopted; The welding machine adopts AC welding machine with welding current of 100 ~ 130a. Before welding, check the quality certificate of welding rod and adjust the welding machine current. Check the quality
of the surface of the welding part, and welding can be carried out before it is qualified. Electrodes shall be stored in a monotonous and well ventilated place.
The weld size shall be constructed according to the construction drawings. Prevent outdoor welding in rainy days. Visual inspection of weld appearance quality shall be suspended after welding. The welding wave of the weld shall be uniform, and there shall
be no cracks, incomplete fusion, slag inclusion, undercut, burn through and other defects. After welding, the coating shall be cleaned, and two coats of
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