Electric Chain Conveyor Mesh Belt Furnace Tempering for Auto Springs 8 kg

Electric Chain Conveyor Mesh Belt Furnace Tempering for Auto Springs 8 kg 

Application

Design Basis 

Main technical parameters of Mesh Belt Tempering Furnace 

Technical Specification

The chain type mesh belt furnace heats the furnace up and down heating method. Each heating zone has a circulation fan to achieve an unified furnace temperature. The mesh belt is driven by chain mechanism. The mesh belt conveyor furnace exit is equipped with a cooling fan.The furnace is used for tempering treatment of auto springs. 

5.1  Main parameter:

5.1.1  Mesh belt width: 1200mm;

5.1.2  Front stand length: 1500mm;

5.1.3  Heating length: 14000mm;

5.1.4  Back stand length: 3000mm;

5.1.5  Heating power: 340KW;

5.1.6  Heating control: 6 zones, PID control;

5.1.7  Temperature uniformity: ≤±5℃;

5.1.8  Furnace surface temperature rise: ≤40℃;

5.1.9  Transfer speed: 30～150min frequency stepless adjustable; with real-time display meter.

5.2 Furnace body:

The mesh belt conveyor furnace body is welded by 6mm steel plate and sectional steel. The mesh belt furnace top cover plate is 10mm steel plate and reinforced with 6mm steel plate. The bottom frame of the mesh belt conveyor furnace is welded from 10# channel steel, and the outer frame is reinforced with double channel steel so that the bearing capacity of the bottom frame can be ensured.

5.3 Mesh belt and mesh belt transmission system:

Mesh belt: 1200*38000*2.0/3.0mm, SUS304, 1 pc;

Chain and sprocket wheel: P=76.2mm, SUS304, 1 set;

Bearing: UCP/UCT210, 4 sets;

Transmission reducer: BWEY131-1.5kW, 1 set;

Transmission: Omron, 1 set;

5.4. Thermal insulation

5.4.1 The thermal insulation layer of mesh belt conveyor furnace is comprised of 1260 high temperature cerablanket, insulation board and insulation brick.

5.4.2 The mesh belt furnace roof adopts compound lining of aluminum silication fiber cotton. The roof outer layer is made of stainless steel plate.

5.4.3 The mesh belt tempering furnace wall adopts B5 high-alumina brick and 1260 cerablanket. The wall lining thickness is 300mm.

5.4.4 The mesh belt furnace bottom adopts B5 brick and 1000 silicon calcium board.

5.4.5 Fire-proofing adhesive adopts P-150. The higher the temperature, the better the bonding performance.

5. 5 Heating System

The mesh belt conveyor furnace is a resistance heating mode, which is divided into 6 independent heating zones. The heating element adopts electric heating tubes, which is installed horizontally on the upper and lower layers of the furnace so that the workpieces will be evenly heated in the furnace.

5.5.1 Heater: fin electric heat tube, 220V/1.34KW, 252 pcs;

5.5.2 Installation method: horizontal installation on two side walls;

5.5.3 Connection method: Y type;

5.6 Heating control

The temperature control mode adopts PID phase-shifting trigger, double temperature and double control, over-temperature alarm, couple breakage alarm, and low temperature alarm.

5.6.1 The temperature control adopts PID control,

5.6.2 Temperature measurement: thermal couple WRN430-800- K type, 6pcs;

5.6.3 Temperature controller: Honeywell, 6sets;

5.6.4 Power control: SCR Integration module, 6 sets;

5.7 Circulation fan

5.7.1 Motor: 1.5KW/4P A, 6 sets;

5.7.2 Connecting shaft blade, φ480mm SUS304, 6 sets;

5.7.3 Bearing: NSK, 12 sets;

5.7.4 Bearing cooling: oil cooling jacket,6 sets

5.8 Fume exhaust device

5.8.1 Each zone of furnace body has fume exhaust pipe. Fume exhaust pipe has regulating butterfly valve, 6sets;

5.8.2 Charging and discharging hole has fume exhaust hood, 2 sets;

5.9 Exit Stand

The exit stand of the mesh belt conveyor furnace is welded from channel steel and steel plate. There is the cooling fan installed above the exit stand to cool down the coil spring quickly.

5.9.1 working size: 1200*3000mm;

5.9.2 cooling fan: 0.75KW, 2sets;

5.10 Control cabinet

Cabinet size: 1000*700*2000,2 sets

The whole production line is controlled by the PLC

The whole production process is monitored by the PLC which controls the temperature, liquid level and driving device. The control system has the audible and visual alarm, safety interlocking system, and a simulation screen for observing the performance of the furnace real-time. The mesh belt speed is also shown by a speed reader.

Drawing of Mesh Belt Furnace Tempering Treatment of Auto springs: