Electrical Conveyor Mesh Belt Furnace For Fasteners Continuous Hardening And Tempering Furnace

Support-roller Electrical Mesh Belt Furnace for fasteners

1.Buyer Requirement

1.1 product: self-tapping screw;

1.2 process: carburizing, carbo-nitriding, and tempering,

case depth: ≤0.15mm;

1.3 productivity: around 350kg/h carburizing;

2. Specification

According to the buyer’s requirement, we recommend our customer to

choose 600*8000mm support roller type electrical mesh belt furnace.

3. Main Features

3.1 To meet the production needs of fastening parts, the mesh belt conveyor

furnace employsTaiwan technology, and improves its energy-saving effect in the

area of refractory lining.

3.2 The production line employs low-voltage heating through the transformer

to prolong the service life of the heating tubes.

3.3 The mesh belt is supported by the support rollers with synchronized

movement so that the mesh belt bears a minimum tension.

3.4 The rollers are supported by special high-pressure sealed bearing.

3.5 The mesh belt is designed with abnormal transportation alarm device to

assure the stable movement of the mesh belt.

3.6 The drip-in atmosphere is gasified by a gasifier and then sent into the furnace.

The atmosphere is monitored and controlled continuously by an oxygen probe.

3.7 The hot mesh belt returns back to the entrance of the furnace and preheats

the cold partss, which saves energy greatly.

3. Production Line Basic Parameters

4. Equipment Specification

4.1 charging machine

Mesh belt width: 700mm

4.2 Precleaning machine

Mesh belt width : 600mm

Effective length: 2400mm

Tank volume: 2m³

4.3 Mesh belt type quenching furnace

Mesh belt width: 600 mm

　 Inlet length: 2000 mm

　 Preheating belt length: 1500mm

　 Working area length: 8000mm

　 Effective height: 100mm

4.4 quenching oil tank

Mesh belt width : 1000mm

Oil tank depth: 2000mm

Oil tank length: 4200mm

Tank volume: 12 m³

4.5 Oil removing stand

Mesh belt width : 800mm

4.6 Post-cleaning machine

Mesh belt width : 800mm

Effective length: 2800mm

Tank volume: 2m³

4.7 mesh belt tempering furnace

Effective height: 130mm

Mesh belt width : 850mm

Heating area length: 8000mm

5. Technical Specification Per Unit

Charging Machine

The charging machine is comprised of magnetic belt conveyance

system, frame, magnetic belt and driving system. The machine

frame is made from sectional steel and steel plates.

1 reducing gear, 0.55kw, 1 set

2 magnetic belt: 700*340*1/2mm (SUS304) 1 piece

3 Strong force magnetic steel: 28*26*12 1 group;

4 Vibration motor: 250W, 1 set;

5 magnetic belt speed: 80-450min/mm (frequency conversion), 1 set;

Mesh Belt Type Pre-cleaning Machine

The mesh belt cleaning machine is of the immersion type. It has 3

working positions which are immersing and cleaning, soap water

jetting, and strong-air drying. The charging machine is equipped

with the strong force nozzle. And it is flanked by one water oil

separation tank and one oil collection tank. The oil collected

could be used.

tank body

The cleaning tank body is fabricated from steel plates and sectional

steel which are welded together. The tank body is made of sectional

steel and steel plate.

2 mesh belt driving device

Mesh belt: 600*16500*1.6/2.5mm, SUS201, 1 piece;

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

　Reducing gear: 0.75kW, 1 set;

3 cleaning tank volume: 2000L;

4 cleaning jetting pump: 2.2kW 1 set;

Copper nozzle, several; 　

Pressure gauge, 0-0.5Mpa 1 set;

5 heating device: 380V/4kW, 6 pieces, 24KW in total;

6 oil and water separation tank

　Oil and water separator, 1 set;

Gear motor, 0.10kW 1 set;

7 drying fan at the exit, , 1 set;

8 temperature controller, 1 set;

Thermal resistor, PT100, 1 piece;

9 Driving detection device, Omron, 1 set;

10 liquid valve d=15 1 piece;

11 Overloading protector, 1 set;

12 high pressure fan, 1 set;

Mesh Belt Quenching Furnace　　

The quenching furnace is the key part of the production line.

It is comprised of furnace shell, front machine stand, heat preservation

material, heating device, temperature control device, and atmosphere

supply device.

1 Main parameters:

　Mesh belt width :600mm

　Working area length: 8000mm

Entrance length: 2000mm

Preheating area length: 1500mm

　Temperature control: 5-zone PID control;

　Rated power: 225KW; 1^st zone: 90KW, 2^nd zone: 45kw; 3^rd zone: 30kw;

4^th zone: 30kw; 5^th zone: 30kw.

Working temperature: 800-920℃

Furnace temperature uniformity:≤±5℃　temperature uniformity for the same section:≤±3℃; furnace outer wall temperature rise: ≤50℃.

Furnace shell: made of sectional steel and steel plate.

2 mesh belt driving device

2.1 The parts are conveyed through the mesh belt.

2.2 The mesh belt is supported by the support rollers with synchronized

movement. The mesh belt is of the front-driven type, and thus bears

a minimal tensile force at high temperature.

2.3 mesh belt driving speed:50～220mm/min, inverter control;

2.4 mesh belt: 600*22000*2/3mm; 1 piece;

2.5 support rollers

Preheating upper rollers, SUS304S 5 pieces;

Preheating lower rollers, SUS304S 3 pieces;

Upper rollers, SUS310S 26 pieces

Lower rollers, SUS310S 9 pieces

Rear driving roller, SUS310S 1 piece

2.6 chain and sprocket wheel, P=25.4mm, 1 set

2.7 reducer, 0.75kW 1 set;

2.8 bearing, UCFL207 (NSK), 86 sets;

2.9 mesh belt driving detection device, 1 set;

3 heat preservation material

3.1 roof: aluminum cera blanket, Qiqiang, Suzhou;

3.2 side walls: Isolite walls are lined with Isolite anti-carburizing bricks,

heat preservation bricks and heat preservation boards.

3.3 The refractory adhesive is P-150 (Japan brand). It has the

characteristics of stronger bonding effect at higher temperature.

4　heating device: electrical heat radiation tubes.

4.1 The electrical heating tubes are installed in the upper and lower wall

of the hearth. The heating system works with low voltage power supply,

and the furnace doesn’t need to be stopped when replacing the heating tubes.

4.2 electrical heat radiation tubes, 45 sets;

a) outer pipe: ￠122*1420*4mm (SUS310S), 45 pieces;

b) heating tube core: OCr21Al6Nb, 45 pieces;

c) insulation parts (corundum): 45 pieces;

4.3 thermal couple WRN130 K type, 5 pieces;

4.4 Each zone is set with an independent transformer. The heat radiation

tube is in parallel connection, and doesn’t interfere with each other.

The heat radiation tubes are easily maintained.

Mixing fan ( with water cooling system), 3 sets;

vanes (shaft and vanes), 3 pieces;

motor, 1.5kw, 3 sets;

6 exhaust fume device ( removing and burning the

fume of the furnace and the oil tank)

Air pump, 250W, 1 set

7 water cooling heat isolation protection board on the loading

side of the front stand, 1 piece;

8 furnace door

a) movable furnace door at the furnace mouth, 1 set;

b) soft curtain door inside the furnace, 3 pieces;

9 dust removal hole, 16 pieces;

The dust holes are set at the lower part of the two side walls of

the preheating and the heating section. The dust hole is blocked with

a plug made of the heat preservation fiber and cover plate. The

plug is fixed by the lever mechanism, and is easy to be removed.

10 The furnace door is also equipped with 1 fire curtain to heat the

cleaning liquid in the cleaning tank.

11 atmosphere supply device

atmosphere supply: drip-in type: methanol+propane+ammonia;

11.1 Atmosphere control:

Oxygen probe, marathon, USA, 1 piece;

Magnetic valve, Burket, Germany, 1 piece;

Methanol flow meter, 4 sets;

Ammonia flow meter, 1 set;

Propane flow meter, 3 sets;

Reference air flow meter, 2 sets

Air pump, 8W, 2 sets

Safety

The two side walls of the preheating and heating section are both

protected through the perforated cover plate.

13 mesh belt driving device, Omron, 1 set;

 Wuxi Wondery Industry Equipment Co., Ltd, established in year 2013, is a professional supplier engaged in the sale and after sale service of Melting Furnaces, Heat Treatment Furnaces, Hot Dip Galvanizing Furnaces. Our factory is dedicated to strict quality control and thoughtful customer service, our experienced staff members are available to discuss your requirements and ensure customer satisfaction. In recent years, our company has introduced a series of advanced products including aluminum melting furnace, bogie hearth furnace, mesh belt furnace, induction melting furnace, hot dip galvanzing furnaces, etc. In addition, we have obtained C E certificates. Selling well in all cities and provinces around China, our products are also exported to clients in such countries and regions as U S A, Australia, Russia, Turkey, Poland, Italy, Romania, South Korea, Kazakhstan, India, Jordan, Thailand, Vietnam, Brazil, Mexico, Argentina, Venezuela, Colombia. Whether selecting a current product from our catalog or seeking after sales service for your application, you can talk to our customer service center about your sourcing requirements. Adhering to the business principle of mutual benefits, we have had a good reputation among our customers because of our perfect services, quality products and competitive prices. We warmly welcome all dear customers to cooperate with us for common success.