CONTINUOUS FURNACE SYSTEM

• US 20150275325A1
• Filed: 03/26/2014
• Published: 10/01/2015
• Est. Priority Date: 03/26/2014
• Status: Active Grant

• Current Assignee: King Yuan Dar Metal Enterprise Co., Ltd.
• Original Assignee: King Yuan Dar Metal Enterprise Co., Ltd.
• Inventors: TSENG, Chang Lung
• Granted Patent: US 9,523,136 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: C21D 9/0018 for charging, discharging or manipulation of charge
• CPC Class Codes: C21D 9/0056 Furnaces through which the charge is moved in a horizontal straight path C21D9/0043 takes precedence
• CPC Class Codes: C21D 9/0062 Heat-treating apparatus with a cooling or quenching zone
• CPC Class Codes: C23C 8/02 Pretreatment of the material to be coated C23C8/04 takes precedence
• CPC Class Codes: C23C 8/22 of ferrous surfaces
• CPC Class Codes: C23C 8/80 After-treatment
• CPC Class Codes: F27B 1/00 Shaft or like vertical or substantially vertical furnaces for preheating, burning, calcining or cooling lime, magnesia or dolomite C04B2/12
• CPC Class Codes: F27B 2009/122 Preheating
• CPC Class Codes: F27B 2009/124 Cooling
• CPC Class Codes: F27B 9/045 Furnaces with controlled atmosphere
• CPC Class Codes: F27B 9/047 the atmosphere consisting of protective gases
• CPC Class Codes: F27B 9/10 heated by hot air or gas
• CPC Class Codes: F27B 9/20 the charge moving in a substantially straight path tunnel furnace
• CPC Class Codes: F27B 9/40 Arrangements of controlling or monitoring devices
• CPC Class Codes: F27D 19/00 Arrangements of controlling devices
• CPC Class Codes: F27D 21/00 Arrangements of monitoring devices; Arrangements of safety devices
• CPC Class Codes: F27D 7/04 Circulating atmospheres by mechanical means

Abstract

A furnace system includes a pre-heating device disposed on a conveyer device, a heating member disposed in the pre-heating device for pre-heating the work piece, a furnace facility located behind the pre-heating device and having a heating zone, a carburizing zone for carburizing the work piece, a diffusing zone and a temperature decreasing zone for lowering the temperature of the work piece, and a cooling zone for lowering the work piece to a room temperature, the furnace facility includes a front door and a rear door and one or more intermediate doors for confining the work piece within the furnace facility, and a heating element is disposed in the furnace facility for pre-heating the work piece.

Claims

1. A furnace system comprising:

a conveyer device for supporting and transporting a work piece,

a pre-heating device supported on said conveyer device and located at an entrance portion of said conveyer device for receiving the work piece and for pre-heating the work piece, said pre-heating device including a front door and a rear door for confining the work piece within said pre-heating device,

a heating member disposed in said pre-heating device for pre-heating the work piece,

a furnace facility disposed on said conveyer device and located behind said pre-heating device, said furnace facility including a longitudinal chamber formed therein for receiving the work piece, and including a heating zone for further heating the work piece to a higher temperature, a carburizing zone located behind said heating zone for further heating the work piece and for carburizing the work piece, a diffusing zone located behind said carburizing zone for lowering the temperature of the work piece, a temperature decreasing zone located behind said diffusing zone for decreasing the temperature of the work piece, and a cooling zone located behind said temperature decreasing zone for lowering the work piece to a room temperature, said furnace facility including a front door and a rear door and at least one intermediate door for confining the work piece within said furnace facility,

said conveyer device being provided for transporting and moving the work piece from said pre-heating device through said heating zone and said carburizing zone and said diffusing zone and said temperature decreasing zone and said cooling zone of said furnace facility, and

a heating element disposed in said furnace facility for pre-heating the work piece.

2. The furnace system as claimed in claim 1, wherein said pre-heating device includes a safety valve and a discharging port provided in said pre-heating device for preventing said pre-heating device from being over-pressurized.

3. The furnace system as claimed in claim 1, wherein said pre-heating device includes a fan device for air circulating purposes.

4. The furnace system as claimed in claim 1, wherein said pre-heating device includes a thermometer for detecting a temperature in said pre-heating device.

5. The furnace system as claimed in claim 1, wherein said furnace facility includes a safety valve and a discharging port provided in said furnace facility for preventing said furnace facility from being over-pressurized.

6. The furnace system as claimed in claim 1, wherein said furnace facility includes a fan device for air circulating purposes.

7. The furnace system as claimed in claim 1, wherein said furnace facility includes an oxygen detector for detecting an oxygen quantity in said furnace facility.

8. The furnace system as claimed in claim 1, wherein said furnace facility includes a nitrogen supplying port for supplying a nitrogen to said furnace facility.

9. The furnace system as claimed in claim 1, wherein said furnace facility includes a methyl alcohol supplying mouth disposed in said heating zone for supplying a methyl alcohol to said heating zone of said furnace facility.

10. The furnace system as claimed in claim 1, wherein said furnace facility includes a methyl alcohol supplying mouth disposed in said carburizing zone for supplying a methyl alcohol to said carburizing zone of said furnace facility.

11. The furnace system as claimed in claim 1, wherein said furnace facility includes a methyl alcohol supplying mouth disposed in said diffusing zone for supplying a methyl alcohol to said diffusing zone of said furnace facility.

12. The furnace system as claimed in claim 1 further comprising a receptacle disposed below a rear end portion of said conveyer device for collecting the work piece.