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：对彩钢板的火灾危险性和火灾危害性认识不足。彩钢夹芯板以彩色涂层钢板为面材，芯材主要有聚苯乙烯、聚氨酯、岩棉三种。前两种是在两层薄钢板中间夹入不同厚度的聚苯乙烯(简称苯板)或聚氨脂，这种材料一旦受到高温火花或明火作用时立刻燃烧，因材料自身的蜂窝状结构决定了与空气的接触面加大，燃烧起来非常猛烈，扑救过程中，水和灭火剂只能喷到彩钢板外面的钢板上，不能直接作用于夹层里的燃烧物，且燃烧产物毒性特别大，易造成人员伤亡，此类材料因造价相对较低，非常受投资商或开发商的青睐。后一种是在两层薄钢板中间夹入不同厚度的岩棉，该材料属非燃烧材料，防火隔热作用比较好，但因其造价相对高，一般投资商或开发商都不愿使用。

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：电器安装、使用不当也是造成彩钢板房火灾的重要原因。彩钢板建筑起火原因多与违规使用电器、电路老化等有直接关系，有些是将电线直接安装在彩钢板的夹芯层内，有些是电线穿过墙体时直接在彩钢板上钻空穿越，钻空不加护套容易造成电线绝缘层破损而短路打火引起火灾。投入使用后管理不善，在靠近彩钢板的部位使用明火或进行焊割作业引起彩钢板内部可燃夹芯材料燃烧导致火灾发生。

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：业主擅自改变使用功能，增加火灾危险性。部分彩钢结构厂房在申报消防审核和验收时的火灾危险性是丁戊类，而实际上可能是丙类厂房，或者投入使用初期是丁戊类生产，后来因生产项目调整后未及时申报。如济南市某特种汽车改装厂，擅自将彩钢板仓库改为厂房，并在厂房内进行焊接、喷漆施工作业，却未做任何特殊的防火分隔措施，致使在2006年4月，因焊接不慎引发火灾，造成厂房坍塌，财产损失巨大。

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：部分彩钢板建筑项目未经消防审核、验收，致使彩钢板建筑存在先天隐患。在建设中有的项目在设并未考虑防火设计，或者虽有防火设计但在施工过程中未按图施工，项目竣工后未经消防验收，致使可以把关的几个环节都忽略了。另外，加上地方政府在招商引资过程中重引进资金的多少而轻程序，默许企业未审先建、未验先用的违法现象，而此类结构建筑在投入使用后很难再进行防火处理。

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.