Circular furnace process description
(1) Charge
Steel billets are conveyed from feed roller to the predetermined position of charger →start the charger→ putdown arm of charger（ready to grab billet）→grip feed→ uplift the arm→ machine hand bogie move forward→ put down arm（ready to discharge）→grip release→ put up arm→ machine hand bogie move back
(2) Furnace hearth rotate
Steel billets are rotated together with hearth with a different rotation angle of hearth every time. After several times, billets move from charge door to discharge door, preheated and heated when rotating with hearth. When Circular furnace normally produces, every rotation angle of hearth corresponds to a heated billet reaching discharge door, at same time a spare seat is ready for charge.
(3) discharge
When there is a billet waiting for discharge →open the discharger door→ uplift by discharger arm→ machine hand bogie move forward→ put down arm（ready to grab billet）→grip feed→ put up the arm→ machine hand bogie move back→ put down arm（ready to discharge）→ put billet to punch roller.
Normally producing, the process above is orderly coordinately and automatically controlled by PLC which is also of semi-automation and manual function.
30t/h regenerative typeΦ13.5m circular reheating furnace technical performance
|
NO. |
NAME |
UNIT |
VALUE |
|
1 |
Furnace usage |
|
Billet reheating before punch |
|
2 |
Furnace heating capacity |
t/h |
30 |
|
3 |
Billet specification |
mm |
billetφ100～160mm，L=1500～3300 mm |
|
4 |
Heating temperature |
℃ |
1280 |
|
5 |
Fuel types low calorific value |
Blast furnace gas KJ/m3 |
Q高炉=800×4.186 |
|
6 |
Rated Unit consumption |
GJ/t |
Cold package：1.34－1.38 |
|
7 |
Fuel gas emitting temperature |
℃ |
≤150 |
|
8 |
Hearth conveying ways |
|
Three ring gear reducer |
|
9 |
Charge/discharge ways |
|
Machine manual charge/discharge |
|
10 |
Tapping circle |
s |
20 |
|
11 |
Furnace type |
|
Double regenerative blast furnace gas |
Hot dirty gas Φ12mcicular reheating furnace technical specification
|
NO. |
NAME |
UNIT |
VALUE |
|
1 |
Furnace usage |
|
Billet reheating before punch |
|
2 |
Furnace heating capacity |
t/h |
15 |
|
3 |
Billet specification |
mm |
billetφ100～160mm，L=1500～2300 mm |
|
4 |
Heating temperature |
℃ |
1280 |
|
5 |
Fuel types low calorific value |
KJ/m3 |
Q发生炉=1400×4.186 |
|
6 |
Rated Unit consumption |
GJ/t |
Cold package：1.46 |
|
7 |
Fuel gas emitting temperature |
℃ |
≤350 |
|
8 |
Hearth conveying ways |
|
Hydraulic push rod |
|
9 |
Charge/discharge ways |
|
Machine manual charge/discharge |
|
10 |
Tapping circle |
s |
20 |
|
11 |
Furnace type |
|
Hot dirty gas |
