1.Buyer Requirement
1.1 product: fastener;
1.2 process: quenching, cleaning, tempering;
1.3 productivity: about 90-130kg/h
1.5 According to the buyer’s requirement, we are recommending
one muffle mesh belt resistance furnace with effective size at 300*3200*5mm.
2.Basic Parameters of Heat Treatment Furnace Line
Power supply: 380V, 3 phase, 50HZ;
Power supply of the whole line: 190KW;
Total weight of the equipment: 18000kg
Total furnace length: about 19500mm;
Process flow: quenching furnace→quenching tank→cleaning machine→
tempering furnace and electrical control system;
3.Features
3.1 The heat treatment furnace absorbs foreign technology. The furnace
is made in china, but it adopts high quality overseas brand for key parts.
And the overall quality of the furnace reaches the international level.
3.2 The mesh belt heat treatment furnace is comprised of quenching furnace,
quenching tank, cleaning machine, tempering furnace and electrical control system.
4.Equipment Parameters
4.1 rated temperature
Quenching furnace quenching tank cleaning machine tempering furnace
820～920℃ 40～80℃ 40-60℃ 300-650℃
4.2 productivity
Quenching: 90-130kg/h (varying with product shape, weight, and stacking situation)
4.3 atmosphere
Quenching furnace: methanol and propane;
Tempering furnace: air;
4.4 Mesh belt type quenching furnace
Mesh belt width 300 mm
Working area length: 3200mm
Working height: 50mm
4.5 quenching tank
Mesh belt width : 500mm
Tank depth: 1700mm
Tank width: 1200mm
Tank length: 3200mm
4.6 Cleaning machine
Mesh belt width : 500mm
Effective length: 2400mm
4.7 Tempering furnace
Mesh belt width : 500mm
Effective length: 4000mm
Effective height: 80mm
5. Technical Specification Per Unit
Mesh Belt Quenching Furnace
The mesh belt quenching furnace is the key part of the production line. It is comprised
of furnace body, lining, muffle, bottom plate, mesh belt driving device, heating
device, and temperature control device.
1 Main parameters:
Carburizing mesh belt furnace width :300mm
Heating area length: 3200mm
Temperature control: 4-zone PID control;
Rated power: 70KW;
Furnace temperature uniformity:≤±5℃;
Temperature uniformity for the same section:≤±3℃;
Furnace outer wall temperature rise: ≤50℃
2 mesh belt driving device
The mesh belt drive adopts the synchronous supporting by furnace bottom
plate in a reciprocating motion mode, so that the mesh belt bears the
minimum tension under high temperature.
2.1 mesh belt driving speed:30～150mm/min, frequency conversion speed regulation.
2.2 mesh belt: 300*13200*1.2/1.8mm,SUS314, 1 piece;
2.4 reducing gear 0.75kw, 1 set;
2.5 muffle tank SUS310, 1 set;
2.6 movable furnace bottom plate, 1Cr25Ni20Si2, SUS310 (precision casting), 1 piece;
2.7 return passage, 1 set;
2.8 water tank, 1 set;
3 heat preservation material
3.1 The inside roof wall is lined with imported high temperature cerablanket blocks.
3.2 The electric resistance furnace side walls are lined with imported high temperature heat
preservation boards.
3.3 The mesh belt conveyor furnace bottom is built with quality heat
preservation bricks.
3.4 The belt type furnace bottom heating element accommodating bricks are high
alumina deformed bricks, 8pieces in total.
3.5 muffle tank bottom plate (silicon carbide), 8 pieces.
4 heating device
Resistance wire, Cr15Al5, ￠35mm, 77 pieces;
Resistance wire, Cr15Al5, ￠19mm, 2 pieces;
Porcelain tube, high alumina material, 154 pieces;
Exhaust fan (0.25KW),1 set;
Thermal couple, K type, WRN130, 4 pieces;
6.Furnace inside atmosphere
Methanol flow meter,1 set;
Propane flow meter, 1 set;
Reference gas flow meter, 2 sets;
Air pump, 4W, 2 sets;
Oxygen probe,TC-K-06,1 pc;
Solenoid valve, 1/4, 1pc;
7. Temperature control device
The mesh belt conveyor furnace is set with 4 temperature zones. The furnace is PID controlled,and
each zone is set with an ammeter for checking the heating performance of each zone.
The temperature and carbon potential is controlled by the intelligent temperature
controller. There is auto and manual method available.
The temperature is set with over-temperature and low-temperature visual and
audible alarm, and thermal couple breakage alarm.The driving system is set with
an abnormal driving fault visual and audible alarm.
Temperature controller, 4 sets;
Thermal couple, WRN120, K type, 4 pieces;
8.Quenching Tank
The tank body is comprised of tank body, elevating device, heating device, cooling
device, and temperature control device. The quenching medium is bright quenching oil.
1 tank body: The tank body is welded by steel plate and sectional steel in a dense
welding manner.
Tank capacity: about 4000L, 1200*1700*3600mm (W,D,L)
Elevating device, 1 set;
The mesh belt adopts chain transmission mechanism.
Elevating stand, SUS304, 1 piece;
Mesh belt width: 500mm;
Sprocket wheel and chain: P=50.8mm, SUS304, 4 set;
Bearing, UCT,UCP/208, 4 sets;
Mesh belt: 500*13250*1.2/2.8mm,SUS304, 1 piece;
V-shape guard plate, 500*50*40mm, 1 set;
Driving reducing gear, 0.55KW , 1 set;
Mesh belt speed:3-15mins(Mitsubishi inverter control);
Overloading protector, 1 set;
quenching liquid circulation system
Circulation pump, 2.2kW, d=50mm, 1 set;
Air cooling type heat exchanger, 1 set;
heating device
Heater: 380V/4KW, 6 pieces;
Tubular type heat exchange W style: d=25mm (utilizing the heat of the quenching
oil to heat up the cleaning liquid), 1 set;
Thermal couple, PT100, 1 piece;
Temperature controller, 1 set;
Level controller
The level controller could control the upper and lower limit level with an alarm.
Level controller, UK-03, 1 set;
Drying fan, 0.75kW, 1 set;
Driving detection device, 1 set;
9.Mesh Belt Rinsing Machine
The continous mesh belt furnace rinsing machine is designed with 3 working
positions, 1 for hot water immersion cleaning, 1 for hot water spraying, and 1 for
air drying. The machine is equipped with strong nozzles.
1 type: mesh belt immersion and jet cleaning type;
2 mesh belt driving device is comprised of conveyance stand, conveyance chain,
sprocket wheel, mesh belt and driving reducing gear.
Mesh belt width: 500mm
Mesh belt: 500*6600*1.2/2.8mm, 1 piece;
Sprocket wheel and chain wheel, P=50.8mm, 1 set;
Bearing, UCT/UCP208, 4 sets;
Reducing gear, 0.75KW, 1 set;
3 The cleaning tank is made from steel plates. It includes hot water
chamber and spray cleaning system.
Tank capacity: 200L
Soap water rinsing device
Rinsing pump: 1.5kW d=40mm, 1 set;
Garbage hole: 1 piece;
4 temperature control
Electrical heating device: 380V/4Kw, 6 pieces;
Heating power: 24Kw;
Temperature thermal couple, PT100, 1 piece;
Temperature controller, 1 set;
water replenishment automatic supply device, 1 group;
Oil and water separator, overflow type, 1 set;
Oil replenishment pump, 370W, 1 set;
driving fault detection device, 1 set;
10.Mesh Belt Tempering Furnace
The mesh belt tempering furnace heats the parts from its top and bottom wall.
Each heating zone has 1 air circulation fan for improving the temperature uniformity
inside the furnace. The mesh belt adopts support roller transmission mechanism.
1 Main parameters
1.1 Mesh belt width: 500mm
1.2 heating area length: 4000mm
1.3 rated power: 48kW
1.4 heating control: 2-zone PID control;
1.5 furnace temperature uniformity:≤±5℃, furnace outer wall temperature rise: ≤45℃;
2 front stand
The front stand is the entrance table of the tempering furnace. It is comprised of
the frame and the support rollers.
2.1 Front stand size:1500*700*980mm
2.2 support roller, ￠219mm, 1 set;
Support roller,￠89mm, 1 set;
3. Furnace body
The tempering furnace body is made of shell and base frame. It is made of 5mm
steel plate and 10# sectional steel.
Tempering furnace body size: 4000*1375*1760mm;
11.The cover plate of the furnace top are made in sections to allow easy
maintenance.
4.Mesh belt driving device
4.1 The mesh belt is driven by the support frame. The mesh belt is of the rear-driven
type, and thus bears a minimal tensile force at high temperature.
4.2 mesh belt driving speed::30～120mm/min, inverter control;
4.3 mesh belt: 500*14000*1.2/1.8mm, SUS304S, 1 piece;
4.4 support frame, 500*4000mm, SUS304, 1 set;
4.5 chain and sprocket wheel, P=19.05mm, 1 set;
4.6 reducer, BWEY121-43*43-0.75kW, 1 set;
5. Heat preservation material
5.1 The wall adopts light heat preservation brick + silicate aluminum fiber blanket.
5.2 The bottom adopts light heat preservation brick + siliate aluminum fiber board.
5.3 The top of the furnace body adopts silicate aluminum fiber cotton. The heat
preservation material is wrapped around the air duct.
5.4 The adhesive used is high temperature type 1000.
6. heating device
The heat radiation tubes are installed on the upper and lower area of the body.
6.1 Electrical heat radiation tubes, 220V/1.0kW, 24 pieces;
6.2 temperature controller, Honeywell, 2 sets;
6.3 thermal couple, K type, 2 pieces;
7 circulation fans, imported technology, 2 sets;
7.1 vane shaft,￠55mm SUS304,2 pieces;
7.2 centrifugal vanes, ￠320, SUS304, 2 pieces;
7.3 bearing, (NSK) UCFY211/209, 2 sets;
7.4 motor, 1.5kw, 2 sets;
7.5 oil cooling tank, 2 pc;
7.6 mesh belt driving detection device, Omron, 1 group;
12.Computerized Electrical Control
Collective wiring of the electrical control cabinet
Electrical control cabinet, 600*700*2000mm, 5 pieces;
The continuous conveyor mesh belt furnace is monitored by the PLC which controls the
temperature, liquid level and driving device. The control system has the audial
and visual alarm, safety interlocking system, and a simulation screen for observing
the performance of the furnace real-time. Each unit has single-movement function
and linkage. When there is a material blocakge situation, the mesh belt of each unit
could move clockwise or anticlockwise. The quenching tank could stop movement
temporarily for the isothermal process.
