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CONTINUOUS FURNACE FOR CARBURIZING, HARDENING AND TEMPERING


To see the specification of your hardware, click on the appropriate section.




Furnace line for heat treatment of conveyer type


GAS BURNER HEATING TYPE or ELECTRIC HEATING TYPE?

This is the Main Furnace of the Conveyor Quenching-Tempering Unit for Heat Treatment of Fasteners.

Quenching furnaces are electrically heated or gas heated.




RG-805G [Gas Burner Heating Type] Continuous Bright Carburizing (Hardening) Quenching Furnace

газIn this furnace the products go through hardening, carburizing or carburnitriding treatment with atmosphere after being washed in the front washing machine.

For carburizing or tempering screws, nuts, bicycle parts, car parts, forged parts, hand tools, hardware parts, etc.

Gas Burner Heating Type Continuous Bright Carburizing (Hardening) Quenching Furnace


Techical Specifications of Gas Burner Heating Type Continuous Quenching Furnace

Model Treating Capacity Conveyer Width (mm) Inside Height (mm) Length of Heating Section (mm) Combustion Ability (kcal/hr) Power (Max) (kW)
to Middle / High Carbon Steel (kg/hr) to Low Carbon Steel (kg/hr)
RG-805G-4 506-572 413-463 800 100 6000 180000 45
RG-805G-5 720-780 546-598 800 100 8000 300000 90
RG-805G-6 1000-1100 833-917 800 100 10000 400000 90
RG-805G-6S 1200-1320 999-1100 800 100 12000 450000 95
RG-805G-7 1250-1375 1040-1146 1000 100 10000 467000 95
RG-805G-7S 1500-1650 1249-1375 1000 100 12000 525000 135
RG-805G-8 1800-1980 1499-1650 1200 100 12000 690000 135


Outlook of installed Gas Burner Heating Type Continuous Hardening Furnace

Gas Burner Heating Type Continuous Bright Carburizing (Hardening) Quenching Furnace


Gas Burner Heating Type Continuous Bright Carburizing (Hardening) Quenching Furnace


Gas Burner Heating Type Continuous Bright Carburizing (Hardening) Quenching Furnace


Gas Burner Heating Type Continuous Bright Carburizing (Hardening) Quenching Furnace


Gas Burner Heating Type Continuous Bright Carburizing (Hardening) Quenching Furnace


Gas Burner Heating Type Continuous Bright Carburizing (Hardening) Quenching Furnace



The content of the equipment of the hardening furnace with conveyor belt of heat-resistant steel wire links

  • Radiant heating system with heat recovery gas burners;
  • Wire links Band;
  • Inlet gas regulator;
Purging gas (emergency)                      Nitrogen
Shielding gas                                                                                                       Endogas
Regulating gas                                                                                 Propane + air
Consumption of propane (gas regulator)                                                       5 m3/h
Maximum temperature in the furnace                                                                      930°C
Operating temperature range     800…900°C
Useful width of the furnace  800 mm
Useful length of the inner space of the furnace (preheating zone)  10,5 m
Clear height of passage  100 mm
Useful area of the conveyor furnace (* see Note) 0,73 × 13 = 9,49 m2
Outer length of the furnace  14000 mm
Maximum power consumption for gas heating        7,8 kW
The power consumed by motors        7,68 kW
Shielding gas consumption          40…45 m3/h
Natural gas consumption    45 m3/h
Purging gas consumption(for one purge) about 40…65 m3/h
Number of heating zones   5
The number of fans for heated gas mixing 4
The time of processing products in the furnace      40…100 min
Note: The calculation was based on the fact that the internal length of the furnace with the preheating zone and the conveyor at the entrance of the furnace is 13m, so the useful length of the conveyor belt is 13 m;



Typical Components of hardening furnace RG-805G (for reference)

  1. Conveyer width 800 mm x inlet height 100 mm x heating length 12,000 mm x inlet length 3500 mm
  2. Construction: Welded by 2”x4” iron & 6 mm x 9 mm x 12 mm x 15 mm x 18 mm iron plates in sealed & strong construction, easy to maintain and is delivered by container
  3. Inner insulating materials:
    • Insulating bricks: Japan Isolite LBK-23 × 1 unit
    • Insulating cement: Japan P-150 × 1 unit
    • Insulating plates: imported products × 1 unit
    • Insulating paint: imported products × 1 unit
    • Ceramic fiber: Japan 8P & 10P × 1 unit
  4. Heating constructionа:
    • Type of burners: radiant tube type
    • Model of burners: TFB 30 (ECLIPSE made in USA)
    • Radiant tubes : HU casting pipe Ø114 mm × T:6 mm by U type (IMP made in Switzerland)
    • Quantity of burners : 27 sets
  5. Temperature control system:
    • Control system: PID control
    • Control zones: 6 zones
    • Thermocouple: K-type
  6. Conveyor belt:
    • Belt type: Mesh type
    • Material: SUS314S (made in Germany)
    • Wires diameters: 2.0 mm × 3.0 mm
    • Belt width: 800 mm
    • Bending wall height: 20mm
    • Total belt length: 31.5 meters
  7. Mixed fan:
    • Fan materials: stainless SUS310 shaft with SCH22 blade
    • Fan type: propeller type, design is patented (made in Taiwan)
    • Speed: 900RPM
    • Sensor: proximity switch
    • Motor: 2 HP (1.5 kW)
    • Total quantity: 5 sets
    • Cooling type: air-cooling type, design is patented (made in Taiwan)
  8. Max operation temperature: 930°C
  9. Driving system:
    • Motor: inverter motor 2.2 kW (3HP) + gear box 1/900
    • Control: Inverter 2.2 kW (TE, made in France)
    • Speed range: 40~200 minutes (from inlet to outlet)
    • Driving type: roller type
  10. Driving rollers:
    • Construction: up roller, under roller, main roller, design is patented (made in Taiwan)
    • Materials: stainless with SCH22
    • Bearing: Heating side by un-lubrication bearing (design is patented), driving side by UCFL 207 bearing (made in Japan)
    • Cooling house of bearing: air-cooling type, aluminum casting construction (design is patented)
  11. Flow meters:
    • Protective gas flow meters × 1 unit
    • Enrich gas flow meters × 1 unit
    • Ammonia flow meters × 1 unit
    • Air flow meters × 1 unit
  12. Exhaust fan: 1/4 HP (0.25 kW) × 6P
  13. Outlet chute: SCH22 casting construction
  14. Pre-heating zone: Stainless fire curtains
  15. Water warmer: Uses heat from waste gases to heat water for washers
  16. Conveyor belt extending system × 1 unit
Note: the entire structure is made of stainless steel with insulation, and includes additional water pumps with switches that are located on the front and rear washers to circulate hot water.





Continuous Bright Carburizing (Hardening) Quenching Furnace RG-805 [ELECTRIC HEATING TYPE]

Structural feature of the Electric Heating Type Quenching Furnace

электричество
  • Electricity-saving: adopts high tensile calcium silicate board, ceramic fibre board, heat-resistant material for high performance.
  • Operation: adopts automatic control to save manpower.
  • Quality: adopts multi-stage control mixed fan in the furnace to get uniform temperature for high quality.
  • Gas: adopts gas generator or methanol decomposition to stabilize gas and to ensure for quality.
  • Stability: CP value tolerance ±0.03% (carbon potential), and the furnace temperature of uniformity at ±7.5°C.
  • Adopts self-lubricant bearing (to save for maintenance with greasing).
  • Maximum temperature in the furnace 930°C
Continuous Bright Carburizing (Hardening) Quenching Furnace with electrical heating


Techical Specifications of Electrical Heating Type Continuous Quenching Furnace RG-805

Model Treating Capacity Conveyer Width (mm) Inside Height (mm) Length of Heating Section (mm) Inlet Lenght (mm) Power (Max) (kw)
to Middle / High Carbon Steel (kg/hr) to Low Carbon Steel (kg/hr)
RG-805-A 124-138 48-69 400 100 3000 3500 54-60
RG-805-1 198-220 84-120 400 100 4000 3500 75-90
RG-805-2 352-385 204-240 500 100 5500 3500 120-150
RG-805-3 414-483 313-350 600 100 6000 3500 160-200
RG-805-4 506-572 413-463 800 100 6000 3500 225-250
RG-805-5 720-780 546-598 800 100 8000 3500 270-300
RG-805-6 1000-1100 833-917 800 100 10000 3500 360-400
RG-805-6S 1200-1320 999-1100 800 100 12000 3500 400-450
RG-805-7 1250-1375 1040-1146 1000 100 10000 3500 425-470
RG-805-7S 1500-1650 1249-1375 1000 100 12000 3500 480-530


Typical Components of Electrical Heating Type Hardening Furnace RG-805-2 (for reference)

  • Construction: Welded by 2”x4” iron & 6 mm x 9 mm x 12 mm x 15 mm x 18 mm iron plates in sealed & strong construction, easy to maintain and is delivered by container.
    • Inner insulating materials: energy-saving building blocks LBK-23 (Japan), heat-insulating energy-saving bricks SK36 (Japan), energy-saving plates, insulating wool for a temperature limit of 1600°C (Japan). SK36 can be melted into refractory clay, making it ideal for heat retention.
    • Conveyor belt woven from wire made of stainless heat-resistant steel SUS310. The edges of the conveyor are folded up to prevent rolling products.
  • Heating construction: 36 pcs of heating elements made from imported nickel-chrome wire, protected by a radiant heating seamless tube made of steel S310S (made in Japan), with an aluminum-porcelain insulator (made in Japan)
  • The system of mixing the atmosphere in the heating chamber:
    • Atmospheric mixing fan (heat-resistant steel SUS310): 2 sets
    • Fan motor 1HP
    • Bearings and cooling system: 2 sets
    • Exhaust removal motor ¼HP: 1 set
  • Drive system
    • Inverter Motor 1HP
    • Reducer 60 ~ 100: 1 set
    • Drive chain with sprockets: 1 set
    • Top rollers: 1 block
    • Bottom rollers: 1 block
    • Bearings: 1 block
    • Main roller: 1 set
  • Heating system: 1 set
    Note: water heating system for washing machines is installed at the beginning of the quenching furnace and uses the generated heat of the furnace.



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