熱門關鍵詞：濟南彩鋼板 | 濟南復合板 | 濟南彩鋼瓦 | 濟南c型鋼 | 濟南鋼結構 |
The manufacturer of clad plate said that for the tower made of clad plate, the problem of whether the support parts of tower internals are welded on the base of clad plate or on the cladding is often encountered.
If it is welded on the cladding, in addition to checking the strength of the connection weld between the internal support and the cladding, the bonding strength between the base and the cladding should also be considered. And the requirements of welding in the base, mostly worried about the bonding strength of the base and cladding.
The difficulty of welding the internal support in the base course is to peel off the cladding carefully without damaging the base course.
In addition, if the internal support (such as zirconium) can not be welded with the base (such as carbon steel), it can only be welded in the cladding. (zirconium materials cannot be fusion welded with carbon steel or stainless steel)
For manufacturing units, it is difficult to require the support parts of internal parts to be welded on the base of composite plate cylinder, because it is very difficult to remove the multi-layer processing groove. The processing accuracy must be strictly controlled, otherwise it is easy to damage the base material, and will inevitably extend the construction period and increase the cost.
In general, the bonding shear strength of clad plate is higher than the allowable shear stress of weld metal, that is to say, the bonding strength of clad plate will not be damaged even if the connecting weld between the inner support and cladding is cracked.
However, when the allowable stress of titanium, zirconium and other materials is relatively low, the above check may also be unqualified. At this time, the bearing capacity can be enhanced by adjusting the weld form.
The manufacturer of clad plate said that with the improvement of explosion technology level of clad plate in China, the bonding strength of clad plate has been able to meet the requirement of weld strength of internals support. Therefore, on the premise that the strength calculation of the welding seam between the inner support and the cylinder is qualified, the inner support should be directly welded on the cladding of the composite plate cylinder considering the difficulty of equipment manufacturing, manufacturing period and economic cost.