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- Specification of equipment: gas fired
Mesh belt tempering furnace 600*5000*120mm.
- Main technical parameter
1. Electricity
Electric power: 380V±10%, 3phase AC, 50HZ;
Measurement and control: 220V±10%, 50HZ;
Transmission and other contact point power: approx 11KW;
Normal working power: approx 8KW.
2. Gas
Fuel: Natural gas
Gas contact point pressure: 0.5-1bar;
Heat value: 8400Kcal/m3;
Tempering furnace: 240KW；40KW*6pcs;
Temperature: max 650℃;
- Technical Specification:
The mesh belt tempering furnace consists of front rack, furnace body, furnace lining, heating system, hot air circulation system and transmission system. The furnace adopts upper heating method. Each heating zone has a circulation fan to achieve a unified furnace temperature. The tempering furnace is driven by support roller.
1. Main parameter:
Conveyor width: 600mm;
Heating length: 5000mm;
Heating power: 240KW (natural gas);
Heating control: 3 zones, PID control;
Temperature uniformity: ≤±5℃;
Furnace surface temperature rise: ≤45℃;
2. Front rack
The front rack is a feed stand for tempering furnace, which consists of rack and support roller.
Size of rack: 1500*800*980mm;
Support roller: ￠219mm;
Support roller: ￠89mm;
3, Furnace body:
The conveyor belt furnace body consists of furnace shell and bottom frame, which is welded by 5mm steel plate and #10 channel steel
Furnace body: 5000*1475*1760mm;
Each zone of upper cover can be opened separately which is
Convenient to maintenance
4. Conveyor and conveyor transmission system:
The transmission of workpiece is through mesh belt;
The transmission of mesh belt is through support roller and it adopts rear drive type to make the mesh belt bear the minimum tension under high temperature.
Mesh belt transmission speed: 30～120mm/min, Mitsubishi
Frequency control;
Mesh belt: 600*16000*1.2/1.8mm, SUS304S, 1 pc;
Bracket: 600*5000mm, SUS304, 1 pc;
Sprocket wheel: P=19.05mm, 1 pc;
Reducer, BWEY121-43*43-0.75KW, 1 set;
5. Furnace lining
The furnace lining adopts composite lining.
Furnace wall: light weight insulating brick+ aluminum silicate fiber blank;
Furnace bottom: light weight insulating brick+ aluminum silicate fiber plate;
Furnace roof: aluminum silicate fiber cotton, which is wrapped inside the air guide plate;
High temperature adhesion agent: 1000
6. Heating System
The mesh belt furnace is heated by natural gas. The gas burners are installed horizontally at the upper part of the furnace hearth.
Gas burner: 40KW/pc;
Radiating tube: ￠120mm, SUS304;
Temperature controller: Honeywell;
Thermal couple: K type;
7. Circulation fan
Each zone has a circulation fan which is equipped on the furnace roof to achieve the unified furnace temperature.
Blade shaft: ￠55mm SUS304;
Centrifugal blade: ￠360 SUS304;
Bearing: (NSK) UCFY211.209;
Motor: 1.5KW (oil cooling)
8. Cooling system
Axial flow fan: 0.55KW; which is installed at the exit of the furnace for cooling the workpiece.
9. Control cabinet
Cabinet size: 600*700*2000.1 set;
The mechanical transmission and auxiliary heating of the belt type furnace is controlled by the PLC. The control system has the over-temperature alarm and driving fault alarm. Also there is a simulation screen to show the working performance of the tempering furnace. The mesh belt can rotate clockwise and anticlockwise in case of blockage.
1.Customer’s requirements
Parts to be treated: carbon steel spring clips;
Heat treatment process: tempering;
Output: 250kg/hour.
