750kg per Hour Support Roller Continuous

Gas Mesh Belt Furnace for fasteners bolts nuts

1.Buyer Requirement

1.1Product: fasteners bolts,nuts;

1.2 Process: carburizing, queching, tempering;

1.3 Productivity: quenching: 500-750kg/h;

2. Specification

According to the buyer’s requirement, we recommend our

customer to choose 800*8000*10mm support roller type gas

mesh belt furnace.

3. Equipment General Introduction and Main Features

1 General Introduction

1.1 The heat treatment furnace line combines the advanced

technologies from Taiwan. Its key parts are imported

from overseas.

1.2 The belt type furnace is comprised of support roller mesh

belt quenching furnace, quenching tank, oil remove stand,

post-cleaning machine, support roller mesh belt tempering

furnace, and electrical control system.

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 continuous quenching furnace and tempering furnace are heated by

natural gas which is energy saving, lower cost and higher efficiency.

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 conveyor mesh belt is designed with abnormal transportation alarm

device to assure the stable movement of the mesh belt.

2.6 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.

2.7 The hot mesh belt returns back to the entrance of the furnace

and preheats the cold parts, which saves energy greatly.

4. Production Line Basic Parameters

4.1z Total loading power: about 228KW(electricity);

power supply 3phase, 380v, 50Hz;

1500KW(natural gas);

5.Dimension of each unit

5.1charging machine

Mesh belt width:900mm;

5.2pre-cleaning machine

Mesh belt width: 800mm;

5.3 continuous quenching furnace

Mesh belt width: 800mm;

Entrance area length: 2000mm;

Pre-heating area length: 1500mm;

Working area length: 6000mm;

Effective length: 100mm;

5.4 Quenching oil tank

Mesh belt width: 1200mm;

Quneching oil tank depth: 2000mm;

Qunching oil tank length: 12m³

5.5 Oil remove stand 

Mesh belt width: 1000mm;

5.6 post-cleaning machine

Mesh belt width: 1000mm;

Effective length: 2600mm;

Volume: 3.5m³

5.7 tempering furnace

Mesh belt width: 1000mm;

Heating area length: 8000mm;

Effective height: 130mm;

5.8 blackening tnak

Mesh belt width: 1000mm;

5.9 drying machine

Mesh belt width: 1000mm;

5.10 oiling machine

Mesh belt width: 1000mm;

6. Production Line Power and Energy Consumption

6.1 Power

Heating power: 380V±10%, 3 phase, AC, 50HZ;

Measuring and control system: 220V±10%, 50HZ;

Heating system: about 165kW;

Driving system power and other consumption spots: about 63kW;

Power supply of the whole line: about 228kW;

Power consumption at normal working: about 100kW;

6.2 Natural gas consumption of belt type furnace

Quenching furnace: 900KW;

Tempering furnace: 600KW;

Total natural gas consumption: 1500KW;

6.3 Atmosphere inlet pipe parameters

Methanol inlet pipe: 4-6 L/h ; ≥0.04 Mpa;

Propane inlet pipe: 1000L/H, automatic control; supply

pressure ≥0.04Mpa;

6.4 cooling water

Water quality: according to state standard low-calcium

industrial circulating water;

Suspended substance: max 10mg /L;

Filter mesh belt hole size: max 0.3mm;

Inlet temperature: (max) 30℃ (in summer)

Inlet temperature: (min)5℃ (in winter)

Temperature difference: 10℃

Inlet pressure: 0.2 Mpa;

Max water consumption: about 100m3/h;

6.5 Supplementary Equipment ( supplied by the buyer)

The cooled water tank and cooling tower are usually mounted

outside the workshop;

but near the production line. The cooling power capacity should

be ≥100m3/h.

Computerized Electrical Control

Electrical control cabinet (collective wiring)

Electrical control cabinet, 1000*700*2000mm, 4-5 pieces;

The continuous mesh belt quenching and tempering furnace

 is managed by the computer and monitored by Mitsubishi PLC system.

The control system has a real-timemonitoring, management and process

control of the temperature, driving system, motors, heating system,

and safety.The mesh belt quenching furnace and mesh belt tempering

furnace is heated via natural gas. They are controlled by the temperature controller

and PLC to achieve the pulse ignition of the burners in parallel connection.