New Generation Top Convection Type Flat Glass Tempering Furnace Sh-Fa2232 Popular Size 2200mm*3200mm Hot Sale Products 2023

Basic Info

Model NO.	SH-FA2232
Warranty	One Year
Type	Glass Tempering Furnace
Certification	CE, ISO
Structure	Horizontal
Control System	PLC
Condition	New
After-sales Service	Field Installation,on-Line Surport,
Transport Package	Seaworthy Packing Suitable for Long Distance
Trademark	Easttec
Origin	China
HS Code	8475291900
Production Capacity	5 Sets/Month

Product Description

1.Brief Introduction The equipment mainly includes loading table, heating section, flat quenching and cooling section, blast heads, unloading table, blowing & cooling system and control system. It is used to manufacture flat tempered glass for furniture, home appliance, architecture glass, etc.

The blower system consists of the big blower, the invertor control cabinet, the blower control pneumatic valve, the air duct, the air box, etc. The big blower is adjusted by invertor to be energy-saving.
Note:Blower position on the ground on the top optional.
1.2 Loading Table
The loading table is composed of rubber-covered rollers. When the glass is put onto the rollers, the glass will be conveyed automatically to the entrance of the furnace where it will be in ready-to-enter-furnace position and the rollers stop moving. It will send the glass into the furnace once the computer control system gives enter instruction.

1.3 Heating Section
The structure of the heating section is of a double-layer box type covered with thermo-insulating material. Inside the section there is a conveyor system with high temperature resistant ceramic rollers, which are imported from well-known manufacturers, Heating elements and radiation plates are installed on the upper layer and lower layer of this section. The upper layer radiation plate is special heat resistant and anti-corrosion cast material. The heating element is of an integrated part with spiral type resistance erected on ceramic part, it's easy to replace. When the glass is going to enter the furnace, the front door of the heating section opens, the rollers of the loading table and heating section move at the same time. When the glass is in the furnace, the front door will close and the glass on the rollers will be moved back and forth at the distance calculated by the controlling system automatically, so that the glass will be heated evenly. The upper section can be lifted up by remote control for maintenance. The heating elements are in gapless convection system .
This convection tempering furnace is suitable for tempering flat glass to high standards, especially Low-E glass, coated glass (including temperable soft coats), and cast glass. The heating speed is improved by 20% compared to radiation tempering furnaces, i.e. It is the gapless covnection system.

 

1.4 Flat Quenching/Cooling Section
The blast heads are divided into upper and lower parts. The nozzles are made of aluminum alloy, and the distance between glass and upper/lower nozzles can be adjusted according to the quenching demand for different kinds of glass. In among the blast heads, there are a lot of rollers conveying the glass sheets forwarding. When the glass sheets comes out the furnace, the rollers here will move synchronously with the rollers in the furnace, to transit the glass sheet into quenching section. Then, the glass sheets will move back and forth with the rollers, to keep evenly quenching. While the glass is oscillating in the quenching section, the quenching parts are oscillating in transversal direction, the main purpose is to decrease the glass stress and evenly quench in this section. Meanwhile, the huge blower will immediately blow the high pressure air on the surface of the glass through air ducts. The air pressure and flux is decided by the openness of the butterfly valve at the inlet of blower, which is controlled automatically by the control system. And the rollers are covered by one kind of special heat-resistant material.

1.5 Unloading Table
The unloading table is the same as the loading table. When the glass is transported to the end of the conveyor, the rollers will stop, and the glass can be taken away by hand, or by robot, if there is available at the customer's factory.

1.6 Control System
The control system includes the followings:

1. Process parameters storage and re-call, such as glass thickness, size, color, glass type and maybe different sources of float glass and etc. Whenever you produce a new order for different thickness, size, color, type, source and etc., you just enter the process parameters, and the system will memorize these process data. Next time, when you have the re-order, or the same order, you can re-call the data, and the machine will automatically use the stored processing data to produce.
2. Controller for roller driving system.
3. Controller for the temperature control.
4. Controller for quenching control.
5. The abnormity alarming system would warn while trouble happens to indicate how to solve this trouble.
6. The furnace has auto pre-heating function. After the shift of a day, the furnace will be in the stand-by status, only less than 25% of heating power will be consumed, while the ceramic rollers will be still running. And ahead of working time on the next morning, the system will start up to heat up to the working temperature until the operator begins the production.
7. The main industrial control computer is installed with the terminals at the control desk. Display screen can provide users with analog process status: main screen, process parameter screen, operation and maintenance screen and system parameter screen. The system has reading and writing function for process parameters, automatic control, unit equipment operation and test as well as self-diagnosis, as well as display alarming function.

a) Main drive control system is accomplished by the inverter system which is controlled by computer. On-line of every part is controlled by computer.
b) The main screen is the page displayed on the monitor during normal production. The contents displayed directly in English are the statuses of glass in the furnace, driving system, temperature at each zone, time of heating, quench and cooling, actual pressure, set point of fans and length sum of pieces of glass in the furnace. This screen is for the operator's notice. The process parameter screen records the designed moving distance of loading table when the pedal switch is actuated by the operator, temperature set point of upper and lower furnace, pressure set point of fans, quench time and cooling time set point. These screens are frequently used for normal operation. Maintenance screen is used by maintenance people to test every part of the system. System parameter screen is used by the manufacturer, in order to test the machine, it is not for any other people using, otherwise the machine may be damaged. The system also has some supplementary screens, which will not be explained here.

2.1.1 Glass thickness range : Tempering : 4- 19 mm
2.1.2 Glass size:
Max flat glass size : 2,200 mm x 3,200 mm 5-19mm
For 4mm, Max glass size: 2,200mm x1,200mm
Min glass size : 100 x 350 mm

2.1.3 Finished product rate: over 5mm not less than 96%.

Glass Sorts	Clear glass (5mm)
Bow action(‰)	0.5
Waveness (mm/300mm)	0.08
Productivity(batch/h)	18~20

2.1.4 Standard:EN12150-2000/GB15763.2-2005

2.1.5 Productivity / Process cycle time:

Thickness (mm)	Common Flat Glass (load/h)	Consumption kw/m²	Remark
4	36-40 shifts,two working positions	3.6	Low-e glass productivity will be 60%-70% of the common float glass.
5	16-18	3.85
6	14-15	4.8
8	10-11	5.1
10	8-9	7
12	7-8	8
15	3-4	9.1
19	2-3	11.8	/

2.2 Utilities
2.2.1 Installed power:
Heating : 500 kW
Drives : 12 kW
Flat Quenching : 220 KW x1
convection blower: 3KW x4=12KW
Power requirement: Transformer no less than 500KW
Note: The power capacity may be different and should be referring to the actual

2.3 Compressed air(an air tank should be supplied with 0.5M3 at least) :
Volume : 0.6-0.8m3 /min
Pressure : >0.7 MPa

2.4 Suitable glass sorts:
Clear float glass
Coated glasses (Including most kinds of hard coated glass, parts of special soft coated glass, which withstands about temperature 700 ºC)
Low-e glass(e value 0.15-0.02)
Patterned glass
Tinted glass