Now many people think that color steel plate is a steel material and will not cause a fire, but do you know? Many news often report the fire of this kind of house. What's the specific reason? This kind of house is widely used in industrial plants, workshops, warehouses and temporary houses. Therefore, we must pay attention to fire prevention in the process of normal use, and the next is big house I want to analyze the cause of the fire.

原因一：對彩鋼板的火災危險性和火災危害性認識不足。彩鋼夾芯板以彩色涂層鋼板為面材，芯材主要有聚苯乙烯、聚氨酯、巖棉三種。前兩種是在兩層薄鋼板中間夾入不同厚度的聚苯乙烯(簡稱苯板)或聚氨脂，這種材料一旦受到高溫火花或明火作用時立刻燃燒，因材料自身的蜂窩狀結構決定了與空氣的接觸面加大，燃燒起來非常猛烈，撲救過程中，水和滅火劑只能噴到彩鋼板外面的鋼板上，不能直接作用于夾層里的燃燒物，且燃燒產物毒性特別大，易造成人員傷亡，此類材料因造價相對較低，非常受投資商或開發商的青睞。后一種是在兩層薄鋼板中間夾入不同厚度的巖棉，該材料屬非燃燒材料，防火隔熱作用比較好，但因其造價相對高，一般投資商或開發商都不愿使用。

The first reason is the lack of understanding of the fire risk and fire hazard of color steel plate. The color coated steel plate is used as the surface material of the color steel sandwich board, and the core material mainly includes polystyrene, polyurethane and rock wool. The first two are polystyrene (benzene board) or polyurethane with different thickness sandwiched between two layers of thin steel plate. Once this material is exposed to high temperature spark or open fire, it will burn immediately. Because of the honeycomb structure of the material itself, the contact surface with the air is enlarged, and the combustion is very fierce. In the process of fire fighting, water and fire extinguishing agent can only be sprayed on the steel plate outside the color steel plate, and can not be sprayed Because of its low cost, this kind of material is very popular with investors or developers. The latter is sandwiched with rock wool of different thickness between two layers of steel sheet. This material is a non combustible material and has better fire prevention and heat insulation effect. However, due to its relatively high cost, general investors or developers are reluctant to use it.

原因二：電器安裝、使用不當也是造成彩鋼板房火災的重要原因。彩鋼板建筑起火原因多與違規使用電器、電路老化等有直接關系，有些是將電線直接安裝在彩鋼板的夾芯層內，有些是電線穿過墻體時直接在彩鋼板上鉆空穿越，鉆空不加護套容易造成電線絕緣層破損而短路打火引起火災。投入使用后管理不善，在靠近彩鋼板的部位使用明火或進行焊割作業引起彩鋼板內部可燃夾芯材料燃燒導致火災發生。

Reason 2: improper installation and use of electrical appliances is also an important reason for the fire of color steel plate house. The causes of fire in color steel plate buildings are directly related to the illegal use of electrical appliances and circuit aging. Some wires are directly installed in the sandwich layer of color steel plate, and some wires are directly drilled through the color steel plate when they pass through the wall. It is easy to cause the damage of wire insulation layer and short circuit to cause fire without sheath. After being put into use, the management is not good, and the use of open fire or welding and cutting operation near the color steel plate causes the combustion of combustible sandwich material inside the color steel plate, which leads to the fire.

原因三：業主擅自改變使用功能，增加火災危險性。部分彩鋼結構廠房在申報消防審核和驗收時的火災危險性是丁戊類，而實際上可能是丙類廠房，或者投入使用初期是丁戊類生產，后來因生產項目調整后未及時申報。如濟南市某特種汽車改裝廠，擅自將彩鋼板倉庫改為廠房，并在廠房內進行焊接、噴漆施工作業，卻未做任何特殊的防火分隔措施，致使在2006年4月，因焊接不慎引發火災，造成廠房坍塌，財產損失巨大。

The third reason: the owner changed the use function without authorization, increasing the fire risk. The fire risk of some color steel structure plants in the application for fire audit and acceptance is class D and class E, but in fact, it may be class C plants, or it was class D and class E production at the initial stage of use, but it was not reported in time due to the production project adjustment. For example, a special automobile refitting factory in Jinan changed the color steel plate warehouse into a workshop without authorization, and carried out welding and painting construction in the workshop, but did not take any special fire separation measures. As a result, in April 2006, a fire was caused due to careless welding, resulting in the collapse of the workshop and huge property losses.

原因四：部分彩鋼板建筑項目未經消防審核、驗收，致使彩鋼板建筑存在先天隱患。在建設中有的項目在設并未考慮防火設計，或者雖有防火設計但在施工過程中未按圖施工，項目竣工后未經消防驗收，致使可以把關的幾個環節都忽略了。另外，加上地方政府在招商引資過程中重引進資金的多少而輕程序，默許企業未審先建、未驗先用的違法現象，而此類結構建筑在投入使用后很難再進行防火處理。

The fourth reason is that some color steel plate construction projects have not been checked and accepted by the fire department, resulting in congenital hidden dangers in color steel plate construction. In the construction, some projects did not consider the fire protection design in the design, or although there was fire protection design, they did not construct according to the drawings in the construction process, and the project was not accepted by the fire department after completion, resulting in the neglect of several links that can be checked. In addition, in the process of attracting investment, the local government pays more attention to the amount of introduced funds than the procedures, and acquiesces in the illegal phenomenon that enterprises build before examination and use before inspection. However, it is difficult to carry out fire prevention treatment for such structural buildings after they are put into use.