Wondery High Quality Support Roller Electrical

Mesh Belt Type Furnace Quenching Tempering

1. Basic Requirement 

1.1 product: self-tapping screw, steel wall screw.

1.2 process: carburizing, carbonitriding, bright quenching and tempering;

1.3 productivity: quenching: 150-250kg/h;

2. Specification

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

to choose 500*6000mm support roller type electrical mesh belt furnace.

3. Production Line Basic Parameters

4. Equipment General Introduction and Main Features

1. General Introduction

1.1 The belt type furnace combines the advanced technologies from

Taiwan. Its key parts are imported from overseas.

1.2 The production line is comprised of support roller quenching furnace,

quenching tank, oil removing stand, post-cleaning machine, support-roller

mesh belt tempering furnace, and electrical control system.

2. Features:

2.1 To meet the production needs of fastening parts, the furnace employs

Taiwan technology, and improves its energy-saving effect in the area of

refractory lining.

2.2 The belt typep furnace employs low-voltage heating through the transformer

to prolong the service life of the heating tubes.

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

movement so that the mesh belt bears a minimum tension.

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

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

assure the stable movement of the mesh belt.

2.6 The drip-in atmosphere of the conveyor mesh belt furnace

is gasified by a gasifier and then sent into the furnace.

The atmosphere is monitored and controlled continuously

by an oxygen probe.

 /

5. Equipment Specification

6. Technical Specification Per Unit

Mesh Belt Quenching Furnace　

The quenching furnace is the key part of the mesh belt furnace production line

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

heating device, temperature control device, and atmosphere supply device.

Main parameters:

Mesh belt width :500mm

Working area length: 6000mm

Entrance length: 2000mm

Preheating area length: 1500mm

Temperature control: 4-zone PID control;

Rated power: 160KW

Furnace temperature uniformity:≤±5℃　temperature uniformity for the

same section:≤±3℃; furnace outer wall temperature rise: ≤50℃

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: 500*22000*1.8/2.3mm; 1 piece;

2.5 support rollers

Preheating upper rollers, ￠50mm SUS304 5 pieces;

Preheating lower rollers, ￠87mm SUS304 3 pieces;

Upper rollers, ￠50mm SUS310 19 pieces

Lower rollers, ￠87mm SUS310 7 pieces

Rear driving roller, ￠203mm SUS310 1 piece

Bearings, UCFL207 68sets

2.6 chain and sprocket wheel, P=19.05mm, 1 set

2.7 reducer, 0.75kW 1 set;

2.8 inverter, Mitsubishi, 1 set;

2.9 mesh belt driving detection device, Omron 1 set

3.Heat preservation material

3.1 The inside roof wall is lined with 1400 high temperature silicate

aluminum + 1260 silicate aluminum cera blanket. The lining material

is fixed by ￠8mm rods and SUS310 anchoring parts.

3.2 The electrical resistance mesh belt furnace side walls

are lined with Isolite anti-carburizing bricks,

heat preservation bricks and heat preservation boards. The lining

thickness is 395mm.

3.3 The refractory adhesive is domestic famous 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, 36 sets;

a) outer pipe: ￠122*1325*4mm (SUS310S), 36 pieces;

b) heating tube core: OCr21Al6Nb, 36 pieces;

c) insulation parts (corundum): 36 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.

5. Mixing fan (NSK bearing with water cooling system), 2 sets;

vanes (shaft and vanes), 2 pieces;

bearing, NSK, 4 sets;

motor, 1.5kw, 2 sets;

6.Exhaust fume device ( removing and burning the fume of the furnace

and the oil tank)

Air pump, 250W, 1 set

Water cooling heat isolation protection board on the loading side of the

front stand, 1 piece;

Furnace door

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

b) soft curtain door inside the furnace, 4 pieces;

9. Dust removal hole, 12 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 mesh belt conveyor 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;

Carbon potential controller, Eurotherm, 1 set;

Proportional valve, Burket, Germany, 1 piece;

Methanol flow meter, 4 sets;

Ammonia flow meter, 1 set;

Propane flow meter, 4 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;