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LV-HST
LEVER
84752919
Tempered glass heat soak testing furnace is a testing equipment for tempered glass products. After the completion of the fiberglass chemical process, it enters the homogenization furnace. Through the principle of hot immersion in the homogenization furnace, detonation testing is carried out to eliminate residual nickel sulfide. Tempered glass, which has the risk of "self explosion" and uneven stress inside the glass, is detonated in advance during the testing process, thus avoiding the occurrence of "self explosion" again after the installation of tempered glass, The qualification rate of tempered glass after homogenization will be greatly improved, thereby improving the safety and reliability of tempered glass in buildings. However, it should be noted that homogenized tempered glass cannot completely rule out the phenomenon of self explosion during its future use.
1. Technical parameters:
1.1 Inner size inside furnace: 4500×1650×3100 mm
1.2. Max. processed glass size: 2500×4200 mm
1.3. Glass thickness: 3～19 mm
1.4. Max. single load quantity: 4000kg
1.5. Max. air temperature: 33O ℃
1.6. Working temperature: 290±10 ℃
1.7. Total installation power: 368 KW
1.8. Heating power: 348 KW（12 zones）
1.9. Temperature-control precision: ±5 ℃
1.10.Max. temperature difference during insulating: ≤10℃
1.11. Temperature-rising time: ≤90min (adjustable)
1.12. Homogenizing time: 60～480 min (adjustable)
1.13. Temperature- reduction time: ≤90min (adjustable)
1.14. Self-explosion rate after homogenizing: ≤0.5‰
1.15. Circulating fan: 4 sets (3.0kw for each one)
1.16. Temperature-reduction fan: 1 set (5.5kw)
1.17. Power supply: 3P/AC380V/50HZ
1.18. Air supply: 0.6～0.8 Mpa,200L/min
1.19. Guide rail space: 1100mm
1.20. Weight: About 10.5 T
2. Main structure:
2.1. Main frame: standard section
2.2. Side wall inside furnace: 202 stainless steel plate with 1mm thickness
2.3. Heating system: Electric heating tube
2.4. Electric control system
2.5. Fan circulating system
2.6. Movable glass rack
2.7. Light section rail
3. Electric control system
The control system adopts industrial control computer with user-friendly operation, displaying by monitor and opered by keyboard. The setting for temperature and temperature-keeping time could be set at will according to the process requirements. The temperature adjustment adopts PID control with 12 points tempering-control detector and 20 points soft-wire temperature-measuring detector for glass surface. There is multipath curve displaying and printing. The temperature curve history record could be checked. The electric elements adopts the imported famous brand.
4. The configuration for electric control system (according to CE standard)
4.1. Computer: Advantech
4.2. Monitor: 15″
4.3. Temperature collecting: Advantech Module with 8 channels
4.4. Communication system: Advantech communication module
4.5.Data line: SC-09 from Mitsubishi
4.6. Control software: Mingte
4.7. Temperature sensor: WZPK with 12 points
4.8. Glass temperature sensor: Heat-resistant thermal couple with 20 points
5. Electric control system principle
After start computer, set the temperature-rising time,temperature upper limit, Homogenizing time, temperature-reduction time, temperature-reduction over time, etc. press the heating-star button, the whole control process could be finished automatically according to the set curve. The temperature-collecting module would collect and create the real-time temperature curve and histrory temperature curve. The history temperature curve could be checked and inprited with inputing the random time.
6. Main function
6.1. Real-time temperature curve automatically creating function
6.2. History temperature curve automatically creating function
6.3. Temperature curve automatically checked and printed function (the printing is optional)
6.4. Recording system working situation automatically, such as starting up, quit system, etc.
6.5. Adopting PID control, the temperature curve could be set according to requirements.
Why does tempered glass self- explosion?
Float glass contains nickel sulfide crystals, and NiS (nickel sulfide) undergoes a phase transition process at 379 ℃, starting from a high-temperature state α- The NiS crystal system transitions to a low-temperature state β- When in the NiS crystal system, the volume expands by 2% to 4% and the surface is rough. If these impurities are within the tensile stress zone of tempered glass, volume expansion may cause spontaneous cracking of tempered glass.
How to solve the problem of glass self explosion?
1.In order to eliminate the adverse effects of nickel sulfide on tempered glass, a heat soak test oven furnace should be used to homogenize the tempered glass after it has been tempered in the tempering furnace;
2. HST furnace heats tempered glass to the phase transition temperature of nickel sulfide, promoting rapid phase transition of nickel sulfide. The volume of nickel sulfide will expand by 2% to 4%;
3. If the position of nickel sulfide is within the tensile stress zone of tempered glass, its volume expansion will ignite the tempered glass with the risk of self explosion; After removing self explosive glass, the yield of tempered glass was correspondingly increased;
Tempered glass heat soak testing furnace is a testing equipment for tempered glass products. After the completion of the fiberglass chemical process, it enters the homogenization furnace. Through the principle of hot immersion in the homogenization furnace, detonation testing is carried out to eliminate residual nickel sulfide. Tempered glass, which has the risk of "self explosion" and uneven stress inside the glass, is detonated in advance during the testing process, thus avoiding the occurrence of "self explosion" again after the installation of tempered glass, The qualification rate of tempered glass after homogenization will be greatly improved, thereby improving the safety and reliability of tempered glass in buildings. However, it should be noted that homogenized tempered glass cannot completely rule out the phenomenon of self explosion during its future use.
1. Technical parameters:
1.1 Inner size inside furnace: 4500×1650×3100 mm
1.2. Max. processed glass size: 2500×4200 mm
1.3. Glass thickness: 3～19 mm
1.4. Max. single load quantity: 4000kg
1.5. Max. air temperature: 33O ℃
1.6. Working temperature: 290±10 ℃
1.7. Total installation power: 368 KW
1.8. Heating power: 348 KW（12 zones）
1.9. Temperature-control precision: ±5 ℃
1.10.Max. temperature difference during insulating: ≤10℃
1.11. Temperature-rising time: ≤90min (adjustable)
1.12. Homogenizing time: 60～480 min (adjustable)
1.13. Temperature- reduction time: ≤90min (adjustable)
1.14. Self-explosion rate after homogenizing: ≤0.5‰
1.15. Circulating fan: 4 sets (3.0kw for each one)
1.16. Temperature-reduction fan: 1 set (5.5kw)
1.17. Power supply: 3P/AC380V/50HZ
1.18. Air supply: 0.6～0.8 Mpa,200L/min
1.19. Guide rail space: 1100mm
1.20. Weight: About 10.5 T
2. Main structure:
2.1. Main frame: standard section
2.2. Side wall inside furnace: 202 stainless steel plate with 1mm thickness
2.3. Heating system: Electric heating tube
2.4. Electric control system
2.5. Fan circulating system
2.6. Movable glass rack
2.7. Light section rail
3. Electric control system
The control system adopts industrial control computer with user-friendly operation, displaying by monitor and opered by keyboard. The setting for temperature and temperature-keeping time could be set at will according to the process requirements. The temperature adjustment adopts PID control with 12 points tempering-control detector and 20 points soft-wire temperature-measuring detector for glass surface. There is multipath curve displaying and printing. The temperature curve history record could be checked. The electric elements adopts the imported famous brand.
4. The configuration for electric control system (according to CE standard)
4.1. Computer: Advantech
4.2. Monitor: 15″
4.3. Temperature collecting: Advantech Module with 8 channels
4.4. Communication system: Advantech communication module
4.5.Data line: SC-09 from Mitsubishi
4.6. Control software: Mingte
4.7. Temperature sensor: WZPK with 12 points
4.8. Glass temperature sensor: Heat-resistant thermal couple with 20 points
5. Electric control system principle
After start computer, set the temperature-rising time,temperature upper limit, Homogenizing time, temperature-reduction time, temperature-reduction over time, etc. press the heating-star button, the whole control process could be finished automatically according to the set curve. The temperature-collecting module would collect and create the real-time temperature curve and histrory temperature curve. The history temperature curve could be checked and inprited with inputing the random time.
6. Main function
6.1. Real-time temperature curve automatically creating function
6.2. History temperature curve automatically creating function
6.3. Temperature curve automatically checked and printed function (the printing is optional)
6.4. Recording system working situation automatically, such as starting up, quit system, etc.
6.5. Adopting PID control, the temperature curve could be set according to requirements.
Why does tempered glass self- explosion?
Float glass contains nickel sulfide crystals, and NiS (nickel sulfide) undergoes a phase transition process at 379 ℃, starting from a high-temperature state α- The NiS crystal system transitions to a low-temperature state β- When in the NiS crystal system, the volume expands by 2% to 4% and the surface is rough. If these impurities are within the tensile stress zone of tempered glass, volume expansion may cause spontaneous cracking of tempered glass.
How to solve the problem of glass self explosion?
1.In order to eliminate the adverse effects of nickel sulfide on tempered glass, a heat soak test oven furnace should be used to homogenize the tempered glass after it has been tempered in the tempering furnace;
2. HST furnace heats tempered glass to the phase transition temperature of nickel sulfide, promoting rapid phase transition of nickel sulfide. The volume of nickel sulfide will expand by 2% to 4%;
3. If the position of nickel sulfide is within the tensile stress zone of tempered glass, its volume expansion will ignite the tempered glass with the risk of self explosion; After removing self explosive glass, the yield of tempered glass was correspondingly increased;
