Heat Soak Furnace-Tempered Glass Test Oven

• Customization: Available
• Control System: Industrial Computer
• Warranty: One Year
• Model NO.: HG-JZ3050
• Type: Glass Tempering Furnace
• Structure: Vertical
• Condition: New
• After-sales Service: One Year
• Transport Package: Containers
• Trademark: SWANK GLASS
• Origin: China
• HS Code: 8475291900

Product Description

HG-JZ Heat soak furnace-tempered glass test Equipment

Product Specification
Heat soak furnace is the auxiliary equipment of tempering furnace, After tempered processing, put the glass into this furnace, the inner stress of glass can be evenly distributed, to reduce the self - explosion rate and avoid the risk of self-explosion of tempered glass in the future.

Main technical features:
☆ Make the surface of tempered glass reach stress homogenization, no innerstress, no self-explosion.
☆ Put the heaters at the both sides of furnace, cycle blowers at both sides of furnace, blow the hot air into the furnace and cycle using, reach heating and keep warm.
☆ This system adopts PLC to control temperature up, keep and down, using computer to save and print technical parameter and temperature curve.

Main specification:

Model	Max glass size (mm)	Highest temperature	Total power (kW)	Equipment size L*W*H( mm)
HG-JZ2536	2500x3600	350ºC	210	4500x2240x3670
HG-JZ2550	2500x5000	350ºC	260	5900x2240x3670
HG-JZ3050	3000x5000	350ºC	300	5900x2240x4170
HG-JZ3080	3000x8000	350ºC	375	8900x2240x4170
HG-JZ3360	3300x6000	350ºC	336	6900x2240x4470
HG-JZ3385	3300x8500	350ºC	432	9400x2240x4470

Notice:
Above is general size list as reference, other models can be designed and supplied according to exact requirement.

Technical details of JZ3385 Heak Soak Furnace

1. Constitution of Equipment:
The heat soak furnace is composed of the furnace, blower system, heating system and control system. It is made of all-steel outside the furnace. Inside the furnace there are excellent insulation materials with galvanized steel surface. The door of the furnace is manual, and inside it there is small cart which you can pull it out to load the glass and then push them in. There is air circulation channel in the bottom and the top inside the furnace, which can clean the broken glass in the bottom and overhaul electric heating elements (which is made of stainless steel) installed in the side of the air circulation channel. Blower system includes blower motor, blower, air-suction pipeline, air-blower pipeline. The inlet of the blower is connected with the air circulation channel through air-suction pipeline. There are six air-distribution pipelines on the top of the furnace. Control system includes blower control section and temperature control section. The control of the temperature is automatic and the control cabinet is installed in the side face of the furnace.
2. The purpose of homogeneity
The purpose of heat soak of tempered glass is that breaking the glass in advance to avoid that the customers get the self-explosion glass.
The leading factors of self-explosion is that the glass was mixed with nickel sulfide, though the content is very small but it does great affect to the stability of glass. There are two crystallizations in the nickel sulfide, when it is in high temperature (T>380°C), it is α, when it is in low temperature, it is β. Because of the quick quenching when the tempering, the α can not be changed into β, so during the changing, the α can change to β slowly. The volume can expand 4%, then the tempered glass will self-explosion.
Because of the changing speed of nickel sulfide is different from the temperature, the uniformity of the inside furnace is very important. When the temperature is 280°C, the time of changing is two hours, but when the temperature is 250°C, it needs 100 hours. So the temperature of the inside furnace is very important. The HG-JZ series heat soak furnace adopt the recycle-designing, there are perfect designing of air passage, which can be recycle inside the furnace.  The recycle passage has been optimized through the hydromechanics in order to ensure that when there are full of glass inside the furnace, the glass can be heated uniform homogeneously.

3. Technical Parameters

Size of furnace	5500(L)X2240(W)X3500(H)mm
Size of inside furnace	5200(L)X2060(W)X3200(H)mm
Max. glass size	3000x5000mm
Glass thickness	4-19mm
Highest Air Temperature	335ºC
Working Temperature	290±10ºC
Total heating power	360 KW
Temperature Control Accuracy	±5ºC
Max. Range of Temperature in Furnace during Heat Preservation	≤15ºC
Heating Type	Heating elements
Heating rising Time	≤90min (adjustable)
Homogeneous Time	60-480min (adjustable)
Circulating fan	8Pcs of 3 kw
Total Installation Power	385 kw
Power Supply	3P/AC  380V/50HZ  or Other
Compressed air	0.6-0.8Mpa, 500L/min
Productivity	For example:
Cycle time	7 hours/load
The percentage of self-destruction will be controlled within 0.05% after work