1. Overview of sliding doors: Industrial sliding doors and industrial lifting doors belong to the industrial door series. Industrial sliding doors are also known as automatic sliding doors, electric sliding doors, etc. The thickness of the industrial sliding door body is 40-50mm, and industrial lifting doors can be suitable for every type of door outside buildings. Suitable for factories and areas with high cleanliness requirements such as pharmaceuticals, food, electronics, printing, supermarkets, etc., it has significant features such as beautiful appearance, high strength, safety and reliability, smooth opening, low noise, good sealing and insulation performance, saving occupied factory space and improving production efficiency. Due to its low installation conditions and high practicality, it has been widely used.
2. Types of sliding doors: Industrial sliding doors: Industrial sliding doors and industrial doors belong to the same category. Industrial sliding doors are divided into vertical lifting, standard lifting, and high-level lifting, while electric sliding doors are opened and closed horizontally from the middle to both sides. The choice of industrial door opening method will depend on the analysis of the specific situation and development requirements of your workplace, and each industrial door design has unique characteristics and advantages. Larger doors also include storage stacking doors, folding doors, and other types.
According to their purposes, they can be divided into two types: industrial sliding doors and industrial lifting doors;
According to the opening method, it can be divided into two types: manual sliding door and electric sliding door.
3. Composition of sliding door:
1. Door panel industrial sliding door
The total thickness of the door panel is 40mm; 1mm， Double sided 0.5mm thick Baosteel color coated steel plate, coated with polyester coating, primer, passivation layer, and galvanized layer from top to bottom, embossed with orange patterns, and reinforced with positive and negative noodle shaped ribs to enhance the strength of the door panel. The two layers of steel plates are filled with rigid polyurethane foam material, with a density of about 40kg/cubic meter and a thermal conductivity coefficient of less than 0.033W/m.k. A continuous steel strip is installed at the hinge position to ensure a secure installation of the hinge. A 80mm high reinforcing rib is installed on the inner side of each door panel above 5m to ensure that the door panel has a wind resistance strength of at least level 12. There is a EPDM rubber sealing strip at the bottom of the segmented door panel, which contains an airbag. The heads on both sides of the door panel are delta shaped; =1.0mm galvanized steel plate head sheet.
2. Hardware accessories:
The door panel connecting hinge is made of hot-dip galvanized cold-rolled steel plate stamping. Material thicknessδ =2.0mm， Galvanized thickness greater than 28 μ m; m. The guide rail isδ =3-inch industrial door dedicated guide rail made by rolling 2mm hot-dip galvanized steel plate; The cross-sectional shape of the guide rail is equipped with anti decoupling to ensure smooth operation of the guide wheel inside the guide rail; The guide rail guard plate isδ =2mm hot-dip galvanized steel plate roll pressing production, with slots for door side sealing rubber and installation holes connected to guide rails on the protective plate; Guide wheel procurementΠ 72mm industrial door dedicated guide wheel, made of wear-resistant material, containing roller bearings, running smoothly and without noise. The remaining hardware accessories are made of hot-dip galvanized steel sheet stamping, with accurate dimensions and good interchangeability.
3. Balance system: The sliding door adopts torsion spring balance, and the balance torsion spring is designed and manufactured according to the door load software calculation to achieve the best balance state. The torsion spring material is made of 60si2Mn imported spring steel, ensuring a service life of over 80000 cycles. The balance shaft of the sliding door is made of solid round steel with a diameter of 25.4. A torsion spring breakage protection device is installed on the balance shaft, which can prevent the door panel from falling when the balance torsion spring breaks; The lifting pulley is an aluminum cylindrical pulley.
Enhance the safety factor of the steel wire rope by more than 5 times the weight of the door, and install anti wire rope breakage measures on the door panel to ensure its safe operation.
4. Safety protection device:
① A safety airbag is installed at the bottom of the door, which can automatically reverse to the fully open state when encountering obstacles during the closing process of the door;
② At the bottom two ends of the door, there are blade type wire rope breakage protectors. When the lifting wire rope breaks and the door body moves faster, the device can cut into the guide rail to prevent the door body from falling;
③ When the motor is equipped with a disengagement clutch device and switched to manual mode, the door can be manually operated to move.
5. Sealing strip:
The top and both sides of the door opening are equipped with EPDM rubber sealing strips, and EPDM rubber airbags and sealing wings are installed at the bottom of the door to ensure good sealing between the door and the building.
6. Industrial sliding operation: Industrial sliding door
Lift the door operation manual control mode and electric control mode:
1) Manual control mode: The door can be manually raised and lowered in one go, and in the event of a power outage, the door can be manually opened.
2) Electric control mode: On the basis of manual control, there is a standard operation button box next to (inside) each lifting door, which can be opened and closed by operating the up, stop, and down buttons on the button box. And automatically stop when the door reaches the set position.
3) Manual/Automatic Switching: The motor is equipped with a clutch disengagement device. When there is a power outage, the clutch disengagement device can be manually operated to switch the driver from electric to manual, and the door can be opened and closed manually.

4. Product features:
Curtain material: Made of double-layer high-strength, high toughness, corrosion-resistant aluminum alloy extruded.
Surface treatment: classic powder spraying process, which is characterized by strong durability, anti-aging, corrosion resistance, fade resistance, easy maintenance, and lasting as new.
Scope of application: Suitable for exterior doors of medium to high-end factories.
Opening speed: The average speed can reach 12-18 meters per minute;
Operating principle: The door panels with multiple joint movements are connected in series, fixed in the guide rail slide, and rotate up and down around the scroll above the door.
Driving principle: Use a dedicated motor to drive the central axis of the roller blind to rotate, reaching the roller blind switch. When the rotation reaches the upper and lower limits set by the motor, it will automatically stop.
Appearance: The inner and outer surfaces of the door have been specially treated to meet the appearance requirements of various modern industrial plants.
Wind resistance: By strengthening the interior of the door panel and combining it with other reinforcement accessories, the Marley industrial door can withstand the requirements of 12 level winds.
Transparency: Double layered insulated glass with rectangular or elliptical design, surrounded by a flexible rubber see through window, provides good lighting and transparency.
Anti theft: Provides dedicated door latches and locks that can be locked from the inside, combined with a sturdy door body, effectively preventing prying and theft.

5. Technical parameters:
Foam density -------48kg/m³ ± 2kg/m³
Insulation - The U-value test index for installed closed doors (4 * 4m) is 0.84W/m² º C (steel door surface)
Airtightness - For installed doors, the air tightness is approximately 2.5m³ /m² /H (under a pressure of 50 Pa)
Wind load - The wind resistance of the door panel in the closed state is>=450N/M²
Balance system - The lifting doors are balanced by a high-strength spring system, with a minimum service life of 15000 cycles for the springs. Optional with a standard service life of over 30000 cycles. So the surface of the spring is treated with electroplating, which has better corrosion resistance.
Fire rating - For doors (4 * 4m) that are closed, the fire rating is B (national ordinary level)
Sound insulation performance - R=22 decibels/db
Insulation parameter - k-value -1.5w/M2. k
6. Sliding door opening method:
Industrial sliding doors are divided into vertical lifting, standard lifting, and high-level lifting,
The opening method is divided into two types: manual sliding door and electric sliding door.
According to the control method, it can be divided into: remote control, buttons, radar induction, geomagnetic induction, infrared induction, etc.
7. Announcement on the Release of Industry Product Standard "Industrial Sliding Gate"
The "Industrial Sliding Gate" is now approved as a product standard for the construction industry, with the code JG/T353-2012, and will be implemented from August 1, 2012.