钢制防火卷帘门

Steel fireproof rolling shutter door

防火卷帘门导轨问题，导轨问题导轨深度不够，结构与用料不当是许多大型卷帘门安装中普遍存在的问题。大型卷帘门导轨上一般应有一根能承受高强度的主构件。然而很多厂商用简易的轻型导轨来代替，一旦遇到火灾，门帘易从导轨脱出，起不到防火作用。钢制防火卷帘的底帘问题，卷帘门底梁问题有的产品没有底梁，有的产品虽有底梁，但用料单薄。门帘的底梁是保持门帘强度重要构件，门帘下没有底梁就等于门帘下部少一个起坚固作用的边框，火场负压就会将整个门帘掀翻。

The problems with the guide rails of fireproof rolling shutter doors, such as insufficient depth of the guide rails, improper structure and materials, are common problems in the installation of many large rolling shutter doors. There should generally be a main component on the guide rail of a large rolling shutter door that can withstand high strength. However, many factories use simple lightweight guide rails as a substitute. In the event of a fire, the door curtain is prone to detach from the guide rails, which fails to provide fire protection. The problem with the bottom curtain of steel fireproof rolling shutters, and the problem with the bottom beam of rolling shutter doors. Some products do not have a bottom beam, while others have a bottom beam but use thin materials. The bottom beam of the door curtain is an important component to maintain its strength. Without a bottom beam under the door curtain, it is equivalent to a lack of a sturdy frame at the bottom of the door curtain. The negative pressure in the fire will flip the entire door curtain.

钢制防火卷帘的手动控制的传动问题，断电时手动快速关闭装置的传动问题火灾中。如发生电源中断，现场人员可采用手动速放装置。将门关闭。现在有一部分钢制防火卷帘没装这种装置。即使装了，也往往因质量问题，不起作用。

The transmission problem of manual control for steel fireproof rolling shutter, and the transmission problem of manual quick closing device in case of power failure during fire. If there is a power outage, on-site personnel can use a manual quick release device. Close the door. Some steel fireproof rolling shutters are not equipped with this device now. Even if installed, it often does not work due to quality issues.

钢制防火卷帘门楣结构问题：门楣结构问题按标准钢制防火卷帘必须设置门楣结构，而目前普遍使用的是没有门楣的钢制防火卷帘，这种门发生火灾时阻止不了火势向上形成的强大冲击。导致烟气通过门楣向外蔓延。门楣处的密封性是防火、防烟的关键所在，若安装没有门楣结构的钢制防火卷帘，则不能真正起到防火阻隔的作用，形同虚设。

Structural problem of steel fireproof rolling shutter door lintel: According to national standards, steel fireproof rolling shutter must be equipped with a lintel structure. Currently, steel fireproof rolling shutter without a lintel is commonly used, and this type of door cannot prevent the strong impact of the fire from rising in the event of a fire. Causing smoke to spread outward through the lintel. The sealing of the door lintel is the key to fire and smoke prevention. If a steel fireproof rolling shutter without a door lintel structure is installed, it cannot truly serve as a fire barrier and is virtually non-existent.

钢制防火卷帘传动装置强度问题，防火卷帘轴的传动装置强度也是卷帘门的一个重要参数，目前这种强度不合格的产品很多，严重影响了钢制防火卷帘的使用。卷帘轴的结构主要指卷帘轴两端轴头塞人钢管内的深度及其结构。轴头塞人深度应为轴长的1/10左右，且要有两个法兰和足够的焊缝。有些厂商的产品却塞入很短，甚用一个法兰，这种偷工减料的门使用一段时间后有断裂的危险。

The strength of the transmission device for steel fireproof rolling shutters is an important parameter for rolling shutter doors. Currently, there are many products with substandard strength, which seriously affects the use of steel fireproof rolling shutters. The structure of the roller shutter shaft mainly refers to the depth and structure of the shaft heads at both ends of the roller shutter shaft inserted into the steel pipe. The depth of the shaft head plug should be about 1/10 of the shaft length, and there should be two flanges and sufficient welds. Some manufacturers have products that are inserted very short, even using a flange. These shoddy doors are at risk of breaking after being used for a period of time.

钢制防火卷帘帘体厚度问题：门帘厚度问题门帘厚度即帘板所用钢板的厚度，目前普遍存在着偷工减料现象，有些厂家送交测试时采用较厚钢板的帘板，取得合格证后，则改用较薄的进行生产。由于在安装现场卷帘门的帘板厚度不易测量，容易蒙混过关，因此，有很多钢制防火卷帘因门帘厚度都未达到要求，降低使用寿命与耐火时限。

The thickness issue of the steel fireproof rolling shutter body: The thickness of the door curtain refers to the thickness of the steel plate used for the curtain panel. Currently, there is a common phenomenon of cutting corners and materials. Some manufacturers use thicker steel plate curtain panels for testing, and after obtaining a certificate of conformity, they switch to thinner ones for production. Due to the difficulty in measuring the thickness of the curtain panel for rolling shutter doors during installation, it is easy to deceive. Therefore, many steel fireproof rolling shutters have reduced service life and fire resistance time due to the thickness of the door curtain not meeting the requirements.

更多的关于济南卷帘门厂问题或者详细的内容，请进入我们公司的网站：http://www.jnhsjlm.com网站中会有很多的内容仅供参考

For more questions or detailed information about Jinan Rolling Shutter Door Factory, please visit our company's website: http://www.jnhsjlm.com There will be a lot of content on the website for reference only