What are the tests for the performance indicators of industrial sliding doors?

Introduction
As a door product widely used in warehouses, factories, logistics centers and other places, the performance of industrial sliding doors directly affects the safety, efficiency and energy saving effect of the industrial environment. In order to ensure the reliability of industrial sliding doors in actual use, multiple performance indicators need to be strictly tested. This article will discuss in detail the performance indicators and test methods of industrial sliding doors, including strength test, sealing test, durability test, noise test, safety test, wind resistance test, thermal insulation test and automatic control system test. Through a comprehensive analysis of these performance indicators, readers can understand how to evaluate and select high-quality industrial sliding doors.

1. Overview of Industrial Sliding Doors
1.1 Definition and Application of Industrial Sliding Doors
Industrial sliding doors are a vertically lifting door body that is opened and closed by a pulley and track system. It is widely used in industrial buildings, mainly used to isolate space, control temperature and humidity, prevent dust and insects from entering, and improve the safety and aesthetics of buildings.
1.2 Structural composition of industrial sliding doors
Industrial sliding doors are mainly composed of the following parts:
Door panels: usually made of metal materials (such as aluminum alloy, steel), with good strength and thermal insulation performance.
Track system: including vertical and horizontal tracks, used to guide the sliding of the door body.
Pulley group: installed on the door body, and cooperate with the track to realize the lifting and lowering of the door body.
Drive system: usually a motor and a reducer, providing power for the lifting and lowering of the door body.
Control system: including control box, sensor and switch, used to control the operation of the door body.
Sealing strip: installed around the door body to ensure the sealing of the door body when it is closed.

2. Strength test
2.1 Purpose of strength test
The strength test is to evaluate the structural stability of the industrial sliding door when it is subjected to various loads (such as wind pressure, impact, deadweight, etc.), to ensure that the door body will not be deformed or damaged during use.
2.2 Test method
2.2.1 Static load test
Test equipment: use hydraulic loading equipment or heavy object stacking method
Test steps:
Close the door completely and lock it.
Use heavy objects evenly distributed on the surface of the door, and gradually increase the load to 1.5 times the design load.
Observe the deformation of the door, and record the deformation and stress distribution.
After unloading, check whether the door has returned to its original state and whether there is permanent deformation.
2.2.2 Dynamic load test
Test equipment: Use pneumatic loading equipment or impact test equipment that simulates wind pressure.
Test steps:
Close the door completely and lock it.
Use pneumatic loading equipment to simulate wind pressure, and gradually increase wind pressure to 1.2 times the design wind pressure.
Observe the vibration and deformation of the door, and record the data.
Use the impact test equipment to simulate an object hitting the door, and record the impact force and the response of the door.
Check whether the door is damaged or deformed.
2.3 Qualification standard
In the static load and dynamic load tests, the deformation of the door should be within the design allowable range.
After unloading, the door should have no permanent deformation, complete structure, and normal function.
3. Sealing test
3.1 Purpose of sealing test
The sealing test aims to evaluate the sealing performance of industrial sliding doors in the closed state, ensuring that the door body can effectively prevent the entry of air, dust, water vapor and insects, thereby improving the cleanliness and energy saving effect of the industrial environment.
3.2 Test method
3.2.1 Air tightness test
Test equipment: Use an air tightness tester, including a pressure sensor and a flow meter.
Test steps:
Close and lock the door body completely.
Form a sealed test chamber inside the door body.
Use an air tightness tester to fill the test chamber with air at a certain pressure (usually 50-100 Pa).
Record the pressure change and air leakage in the test chamber.
Calculate the air tightness performance of the door body based on the leakage.
3.2.2 Water tightness test
Test equipment: Use a spray device and a water pressure pump.
Test steps:
Close and lock the door body completely.
Use a spray device to spray water on the surface of the door body, and the water pressure gradually increases to 1.5 times the design water pressure.
Observe whether there is water infiltration inside the door body, and record the location and amount of water infiltration.
Check the sealing performance of the sealing strip and the door body joint.
3.2.3 Dustproof test
Test equipment: Use a dust generator and a particle counter.
Test steps:
Close the door body completely and lock it.
Use a dust generator outside the door body to generate a certain concentration of dust.
Use a particle counter to measure the dust concentration inside the door body.
Calculate the dust permeability and evaluate the dustproof performance of the door body.
3.3 Qualification standard
During the air tightness test, the air leakage of the door body should meet the requirements of relevant standards (such as GB/T 7106-2019).
During the water tightness test, there is no obvious water seepage inside the door body.
During the dustproof test, the dust permeability should be lower than the limit required by the design.

4. Durability test
4.1 Purpose of durability test
The durability test aims to evaluate the performance stability of industrial sliding doors in long-term use and ensure that the door body can maintain good working condition under frequent opening and closing and various environmental conditions.
4.2 Test method
4.2.1 Cyclic opening and closing test
Test equipment: Use an automatic opening and closing test device to simulate the frequent opening and closing of the door body.
Test steps:
Set up the test device so that the door body can be opened and closed at a certain speed and frequency.
The test cycle is usually 10,000 to 100,000 times, determined according to the design life of the door body.
During the test, regularly check the operating status of the door body and record abnormal conditions (such as jamming, deformation, noise, etc.).
After the test, check the structural integrity, sealing performance and function of the door body.
4.2.2 Aging test
Test equipment: Use an environmental test chamber to simulate extreme environmental conditions such as high temperature, low temperature, humidity and ultraviolet rays.
Test steps:
Put the door body sample in the environmental test chamber.
Set different environmental conditions (such as high temperature 80°C, low temperature -40°C, humidity 95%, ultraviolet radiation, etc.).
Each environmental condition lasts for a certain period of time (such as 24 hours to 72 hours).
After multiple cycles, check the material aging of the door body (such as discoloration, cracking, deformation, etc.) and performance changes.
4.3 Qualification standard
In the cyclic opening and closing test, the door body should be able to successfully complete the set number of tests without obvious abnormalities.
In the aging test, there is no obvious aging of the door body material, and the performance change is within the allowable range.

5. Noise test
5.1 Purpose of noise test
The noise test is to evaluate the noise level generated by the industrial sliding door during operation, to ensure that the operating noise of the door body meets the requirements of the industrial environment and reduce the impact on the working environment.
5.2 Test method
5.2.1 Noise measurement equipment
Equipment selection: Use a precision sound level meter or noise analyzer, the measurement range is usually 30-130 dB(A).
Equipment calibration: Calibrate the sound level meter before testing to ensure the accuracy of the measurement results.
5.2.2 Test steps
Place the sound level meter at different locations in the door operation area (such as the front, side, back, etc. of the door), about 1 meter away from the door surface and 1.5 meters high.
Measure the noise level of the door during opening and closing, and record the maximum noise value and the average noise value.
Measure the background noise to ensure that the background noise is at least 10 dB(A) lower than the door operation noise.
Calculate the difference between the door operation noise and the background noise to evaluate the noise level.
5.3 Qualification standard
The noise level of the door during opening and closing should be lower than the limit specified in the relevant standards (such as ISO 11821), usually not exceeding 75 dB(A).

6. Safety test
6.1 Purpose of safety test
The safety test aims to evaluate the safety of industrial sliding doors during use and ensure that the door will not cause harm to personnel and equipment under various circumstances.
6.2 Test method
6.2.1 Anti-pinch test
Test equipment: Use a test tool that simulates a finger (such as a cylinder with a diameter of 20 mm).
Test steps:
During the closing process of the door body, place the simulated finger in the gap between the door body and the track.
Check whether the door body can detect obstacles and stop the closing action.
Repeat the test several times to ensure the reliability of the anti-pinch function.
6.2.2 Emergency stop test
Test equipment: Use a test equipment with an emergency stop button and a control system.
Test steps:
During the operation of the door body, press the emergency stop button.
Check whether the door body stops running immediately and record the stop time and position.
After releasing the emergency stop button, check whether the door body can resume normal operation.
6.2.3 Anti-fall test
Test equipment: Use a test device that simulates the door body falling.
Test steps:
When the door body is open, cut off the power supply of the drive system.
Check whether the door body can be kept in the open position by the brake device to prevent falling.
Record the response time and braking force of the brake device.
6.3 Qualification standard
The anti-pinch function should be able to stop the door closing action immediately after detecting an obstacle.
The emergency stop button should be able to reliably stop the door operation, and the stopping time should be within the design requirements.
The brake device should be able to reliably prevent the door from falling after the power is cut off, and the braking force should meet the design requirements.

7. Wind resistance performance test
7.1 Purpose of wind resistance performance test
The wind resistance performance test is to evaluate the stability and sealing of industrial sliding doors under strong wind conditions to ensure that the door body can still work normally under severe weather conditions.
7.2 Test method
7.2.1 Wind pressure test
Test equipment: Use a wind tunnel test device or a pneumatic loading device.
Test steps:
Install the door body in the wind tunnel test device.
Gradually increase the wind pressure to 1.5 times the design wind pressure.
Observe the deformation and vibration of the door body, and record the maximum deformation and stress distribution.
Check the sealing performance of the door body to ensure that there is no obvious air leakage.
7.2.2 Wind-tightening test
Test equipment: Use a pneumatic loading device that simulates wind-tightening.
Test steps:
Install the door body in the test frame.
Use a pneumatic loading device to apply negative pressure on the surface of the door body to simulate wind-tightening force.
Gradually increase the negative pressure to 1.2 times the design value.
Check whether the door body has fallen off or been damaged.
7.3 Qualification standard
During the wind pressure test, the deformation of the door body should be within the design allowable range and the sealing performance should be good.
During the wind-tightening test, the door body has no falling off or damage.

8. Thermal insulation performance test
8.1 Purpose of thermal insulation performance test
The thermal insulation performance test is to evaluate the thermal insulation effect of the industrial sliding door, to ensure that the door body can effectively reduce the heat exchange between indoor and outdoor, and to improve the energy saving effect of the industrial environment.
8.2 Test method
8.2.1 Heat transfer coefficient test
Test equipment: Use a heat flow meter and a temperature sensor.
Test steps:
Install the door body in the thermal insulation performance test device.
A certain temperature difference is formed on both sides of the door body (such as 20°C to 30°C).
Use a heat flow meter to measure the heat flow through the door body.
Use a temperature sensor to measure the temperature distribution on both sides of the door body.
Calculate the heat transfer coefficient (U value) of the door body.
8.2.2 Thermal insulation effect simulation test
Test equipment: Use a thermal insulation simulation cabin and an infrared thermal imager.
Test steps:
Install the door body in the thermal insulation simulation cabin.
Create a certain temperature difference inside and outside the simulation cabin.
Use an infrared thermal imager to capture the temperature distribution image on the surface of the door body.
Analyze the thermal image to evaluate the thermal insulation effect and thermal bridge location of the door body.
8.3 Qualification standard
The thermal transfer coefficient (U value) of the door body should meet the requirements of relevant standards (such as GB/T 8484-2020), usually not exceeding 2.5 W/(m²·K).
The infrared thermal image shows that the temperature distribution on the surface of the door body is uniform, and there is no obvious thermal bridge phenomenon.

9. Test of automatic control system
9.1 Purpose of automatic control system test
The test of automatic control system aims to evaluate the stability and reliability of the control system of industrial sliding door under various conditions, and ensure that the door can operate normally according to the set program.
9.2 Test method
9.2.1 Control system function test
Test equipment: Use the test software and hardware equipment of the control system.
Test steps:
Check whether the functions of the control system (such as opening and closing control, limit control, emergency stop, fault alarm, etc.) are normal.
Test the response time of the control system to ensure that all operations are completed within the set time.
Simulate various fault conditions (such as motor overload, sensor failure, etc.) to check the fault diagnosis and alarm functions of the control system.
9.2.2 Remote control test
Test equipment: Use remote control equipment (such as mobile phone APP, remote control, etc.).
Test steps:
Send the door opening and closing command through the remote control device.
Check whether the door can operate normally according to the command.
Test the response time and signal stability of remote control.
Simulate abnormal conditions such as network interruption to check the emergency handling capability of the control system.
9.2.3 Sensor accuracy test
Test equipment: Use high-precision sensor calibration equipment.
Test steps:
Calibrate various sensors of the control system (such as position sensors, pressure sensors, temperature sensors, etc.).
Simulate different environmental conditions to test the measurement accuracy and stability of the sensor.
Record the error range of the sensor to ensure that it is within the accuracy range required by the design.
9.3 Qualification standard
The functions of the control system should be normal and the response time should meet the design requirements.
The remote control function should be stable and reliable, and there should be no obvious delay or interruption in signal transmission.
The measurement accuracy of the sensor should meet the design requirements and the error range should be within the allowable range.

10. Summary
The performance index test of industrial sliding doors is an important part of ensuring their quality and reliability. Through comprehensive testing of strength, sealing, durability, noise, safety, wind resistance, thermal insulation and automatic control systems, the performance of the door body in actual use can be effectively evaluated. This article introduces the test methods and qualification standards of various performance indicators in detail, providing an important reference for the selection, installation and maintenance of industrial sliding doors.
In actual applications, users should select industrial sliding door products that meet relevant standards and testing requirements according to specific industrial environment needs to ensure the safety, efficiency and energy saving of the industrial environment. At the same time, regular maintenance and performance testing of industrial sliding doors should be carried out to timely discover and solve potential problems and extend the service life of the door.