Start with the door panel: under normal circumstances, the total thickness of the door panel should be 40mm, which can float up and down by 1mm, and the thickness of both sides should be 0.5mm. when coating, the principle of polyester coating, primer, passivation layer and galvanized layer should be followed from top to bottom.

 

1. Start with the door panel: Under normal circumstances, the total thickness of the door panel should be 40mm, which can float up and down by 1mm, and the thickness of both sides should be 0.5mm. The principle of polyester coating, primer, passivation layer and galvanized layer should be followed from top to bottom when coating. Strip pressure ribs should be installed on both sides to increase the strength and pressure resistance of the door panel. In the middle of the two layers of steel plate need to be filled with rigid polyurethane foam, density of about 40kg/cubic, thermal conductivity of 0.033 W/m.k. In addition, a continuous steel belt must be installed at the location of the hinge, which can ensure that the hinge is more firmly installed. If the height of the door panel is above 5m, then the inner side of each door panel should be provided with an 80mm high reinforcing rib to improve the wind resistance of the door, even if the wind is above level 12, it can effectively resist.
2. Hardware accessories: The connecting hinge of the door panel is made by vigorously stamping the hot-dip galvanized cold-rolled steel plate. In this way, the guide wheel material is very special wear-resistant nylon, with roller bearings inside, and there is no noise during operation., Especially quiet. The remaining hardware accessories are made of hot-dip galvanized steel for high-strength stamping, with very standard sizes, and can be interchanged.
3. Safety protection device: Under normal circumstances, airbags will be installed under the door. If obstacles are encountered when the door is closed, the airbags will run in reverse and then automatically open to avoid damage. In addition, the left and right ends of the bottom of the door are equipped with blade-shaped wire rope break protectors.
4. Balance system: The balance of the industrial sliding door is realized by torsion spring. This kind of torsion spring is based on the door heavy load software through precise calculation and judgment, how to judge the quality of the industrial sliding door and then designed.

Key words:Qingdao fast door; Qingdao Industrial Lift Gate