1. Technical Documents
1.1 Basic Requirement
1.1.1 Loading type: no basket, automatic feeding
1.1.2 Energy source: nature gas
1.1.3 Running method: roller conveyor type, 3 layers conveying, completely continuous operation
1.1.4 Layout: the line is arranged in U-shape
1.1.5 Utility condition
:
a) Power
: 3phase ,AC380/220 V±10% 50Hz
b) Working temperature
: -5~45
ºC
maximum relative humidity
:85%
c) Compressed air
:0.4~0.6 MPa
d) Water pressure :0.2~0.3MPa
e) Nature gas pressure:0.04~0.1MPa
calorific value:8200~8400kcal/Nm
3
1.2 Equipment Functional Requirement
1.2
1.2.1 Process requirement: meet the Al. wheel T6 heat treatment process requests
1.2.2 solution furnace:
50min +230min =280min
(200min
~360min
)
50min heating + 230min holding= 280min inside furnace (200min ~360min, adjustable )
1.2.3 Aging Furnace
30min heating + 170min holding = 200min inside furnace (120min ~ 270min adjustable )
1.2.4 production capacity of each line
1.3
Production rate: 1,000,000pcs/year
,(24h/day, 300workding days/year, specific wheel size: 17×10 inch,
φ476mm
)
Hourly production rate: 1000000÷300÷24=138.89pcs /h
Each cycle loaded wheels number:
one layer loaded with 5 wheels, 3 layers,
5×3=15pcs
Hourly working cycles: 138.89÷15 =9.266 cycle /h
Cycle time : 60÷9.266=6.48min
1.3 detailed data of working cycle
| Annual production rate |
1,000,000 |
pcs/year |
| Working days |
300 |
Day |
| Working hours |
24 |
H |
| Hourly production rate |
138.89 |
pcs/h |
| Layers of roller conveyor |
3 |
Layer |
| Wheel numbers per layer |
5 |
Pcs |
| Cycle time |
6.48 |
min/cycle |
| solution furnace |
| Specific heating up time |
50 |
min |
| Specific holding time |
230 |
min |
| Specific wheel size (diameter ) |
:476 |
Mm |
| Distance between each row of wheels |
100 |
Mm |
| Furnace length |
26089 |
Mm |
| Transfer speed of parts inside furnace chamber |
88.9 |
mm/min |
| aging furnace |
| Specific heating up time |
30 |
Min |
| Specific holding time |
170 |
Min |
| Specific wheel size (diameter ) |
476 |
Mm |
| Distance between each row of wheels |
100 |
Mm |
| Furnace length |
18978 |
Mm |
| Transfer speed of parts inside furnace chamber |
88.9 |
mm/min |
2. Supply Scope
| No. |
Item |
Unit |
Qty |
| 1 |
Layering Feeder |
1 |
set |
| 2 |
Feeding of solution furnace |
1 |
set |
| 3 |
Solution furnace |
1 |
set |
| 4 |
Quenching unit and quenching transfer unit after quenching |
1 |
set |
| 5 |
Transfer unit and water drain unit |
1 |
set |
| 6 |
Aging furnace feeding unit |
1 |
set |
| 7 |
Aging furnace |
1 |
set |
| 8 |
Discharging unit |
1 |
set |
| 9 |
Layering unloading unit |
1 |
set |
| 10 |
Combustion system |
6 |
set |
| 11 |
Chimney (5 meters higher above the workshop building) |
1 |
set |
| 12 |
Control system |
1 |
set |
| 13 |
Solution furnace heat-recovery unit |
1 |
set |
| 14 |
Central Integrated Control System (exclude the control room ) |
1 |
set |
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