天物彩板集團(tuán)，功能性彩板定制開創(chuàng)者，專注彩板領(lǐng)域16年。主要從事彩板生產(chǎn)、銷售、 加工，全國配送。年生產(chǎn)能力30萬噸，服務(wù)過上千家企業(yè)，銷售網(wǎng)絡(luò)遍布全國。天物的產(chǎn)品定位是：根據(jù)彩板的使用環(huán)境、設(shè)計年限、結(jié)構(gòu)成型及客戶的需求，個性化定制，滿足客戶多元化需求。產(chǎn)品涉及PVDF氟碳彩板、HDP高耐候彩板、SMP硅改聚酯彩板、PE普通聚酯彩板、彩涂鋁卷等21個系列和品種。

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The slope of color steel sheet roof is generally small,generally below 6%. This kind of structure is common in the areaswith more rain in the south central part of China, with largeleakage area and light joint between window and roof ridge. It isnecessary to understand and analyze the structure, leakage pointand reason of the color steel sheet roof when dealing with theleakage water.

Generally speaking, the water leakage of color steel plate roofis mainly caused by the self tapping screw, color steel plate lapjoint, roof ridge tile, pop rivets, artificial deformation of colorsteel plate on the roof and the falling off of waterproof glue inthe decoration parts such as daylighting windows. The correspondingleakage points can be divided into the following points:

One. Water leaks in roof screws and fasteners

This phenomenon mainly occurs in the double-layer color steelplate and the single-layer color steel plate roof. In theconstruction process, the self tapping force is too large and toolight, and the self tapping screw is skewed, etc., which may causethe self tapping rubber pad to deform, fall off or form a concavesurface, resulting in water dripping and leakage on the roof, andthrough the accumulation of heat preservation cotton, more and morewater is accumulated, forming multi-point water leakage. Inaddition, the position of the self tapping wire is not correct, andthe purlin under the color steel plate leaks directly to formholes, which is also one of the important reasons for the waterleakage. This kind of water leakage may not be obvious in thesingle-layer color steel plate roof structure without heatpreservation system. The main reason is that after the rainwaterleakage, the contact part between the steel plate and the purlin isdirectly dispersed, and the water does not necessarily driprapidly.

2. Water leakage at color steel plate joint

The horizontal and vertical joints and joints of color steelplate are leaking. If the tile wave of color steel plate is too lowor the rainwater is too large to pass through the tile wave, it iseasy to form a large area of water leakage, and the water leakagepoint is not easy to detect. Once formed, it is not easy to repair,which is often seen in arc roofs. The main reason is that the twoplates are not tightly overlapped and the self tapping thread isnot full to form a gap.

彩涂鋼板以冷軋鋼板和鍍鋅鋼板為基礎(chǔ)。彩鋼卷批發(fā)否則會受到二氧化硫氣體、鹽和粉塵的影響。因此，在設(shè)計中，屋面傾斜度越大，積灰等污垢的可能性越小，使用壽命越長；對于不經(jīng)常被雨水沖刷的部位，應(yīng)定期在連續(xù)機(jī)組上用水沖至冷軋帶鋼上，彩鋼板通常稱為彩鋼板。由于涂層是在鋼板成形前進(jìn)行的，國外稱之為預(yù)涂層鋼板。

工藝流程：

鍍鋅層經(jīng)過表面預(yù)處理（脫脂、清洗、化學(xué)轉(zhuǎn)化處理）彩鋼卷批發(fā)和連續(xù)涂裝（輥涂法）后，除起到鋅保護(hù)作用外，還起到覆蓋和隔離作用，可防止鋼板生銹，使用壽命比鍍鋅鋼板長。據(jù)悉，涂層鋼板的使用壽命比鍍鋅鋼板長50%。

但在不同區(qū)域、不同部位使用時，同一鍍鋅量、同一鍍層、彩鋼卷批發(fā)同一鍍層厚度的彩涂板使用壽命會有很大差異。例如，在工業(yè)區(qū)或沿海地區(qū)，由于二氧化硫氣體或鹽在空氣中的作用，腐蝕速度加快，影響使用壽命。雨季時，采用涂層經(jīng)雨水浸泡、長期烘烤冷卻后制成的鍍鋅鋼帶（鍍鋅、熱鍍鋅）作為底板。表面預(yù)處理（脫脂和化學(xué)處理）后，用滾筒涂一層或多層液體涂料。通過烘烤和冷卻得到的板材是涂層鋼板。因為涂層可以有不同的顏色，。

普通雙涂雙烤連續(xù)彩涂機(jī)組的主要生產(chǎn)工藝為：開卷→前處理→涂裝→烘烤→后處理→卷取。