| Item | Process | Facility | Inspection items | Standard |
01 | Steel material
inspection | | Chemical composition
(EF+LF+VD) | Material standard |
| | | | surface | Ingot inspection
specification |
| | | | Ingot type and weight | Material standard |
| 02 | Material
store | | Division put | warehouse management |
| 1 | Heat | Heat furnace | Temperature/Time | Heating process
specification
Forging production
procedure |
| | | | | |
2
↓ | Forging | Press | Reduction ratio,forging
temperature,deformation,
Surface and dimensions | Forging process card
Forging procedure |
3
↓ | Heat treatment | heat treatment
furnace | heat treatment charts | 1st heat-treatment card
Forging procedure |
| | | | | |
4
↓ | Rough
inspection | | Dimensions, apperance,
Mark | Inspection specification
Forging procedure |
| | | | | |
5
↓ | Rough UT | UT equipment | Single defect, concentrated
Defects bottom wave
attenuation | UT standard or
customer's technical
requirements |
6
↓ | Saw cutting | Saw machine | Dimension | IQC and forging |
7
↓ | rough turning | turning-lathe | Dimension,appearance | Rough machining
drawing |
8
↓ | UT | UT equipment | Single defect, concentrated
defects bottom wave attenuation | UT standard or
customer's technical
requirements |
9
↓ | Q+T
heat treatment | heat treatment
furnace | heat treatment charts | Heating process
specification |
10
↓ | Sampling or machining | machining tool | rough machining drawing
sampling drawing | sample machining
drawing |
11
↓ | mechanical
property test | tensile testing machine/
impact testing machine | ambient temperature,humidity,
Test temp.Sample dimension,
test method | Standard
technical specification |
12
↓ | finish
machining | machining
tool | Dimension,appearance | finish machining drawing |
13
↓ | UT | UT equipment | Single defect, concentrated
Defects bottom wave
attenuation | UT standard or
customer's technical
requirements |
14
↓ | MT | MT equipment | Magnetic particle
indication | Test standard or
Technical requirements |
15
↓ | Mark | Steel seal | marking content | Product standard
Technical requirements
Forging process |
16
↓ | Final
inspection | | Appearance, dimension, mark
acceptance inspection | Product inspection
specification
Product standard
P.O. |
| 17 | Protection/
package | Blasting
Blasting equipment | appearance
coating thickness | Product standard
Technical requirements |
***
Mill Frequently Used Steel Materials:
1) Wind Power Shaft: 42CrMo4V, 34CrNiMo6; Wind Power Flange: S355NL, C22, 16Mn, 20Mn, 42CrMo, F304.
2) Forged Pipe Fittings: SA335 P11, P12, P22, P91, SA182 Gr. F1, Gr. F5, Gr. F11 CL2, Gr. F12 CL2, Gr. F22 CL3, SA350 Gr. LF1, Gr. LF2,Gr. LF3.
3) Pressure Vessel Forgings: SA105, SA350 LF2, 16Mn, 20MnMo, 15MnMo, 12Cr2Mo1, 14Cr1Mo, F304, F316, 17-4PH.
4) Shaft Related Forgings: 25CrMo4, 42CrMo4, 40CrNiMo, 34CrNi3Mo, 25Cr2Ni4MoV, 18CrNiMo5, 30CrMo, 4130, 4140.
5) Gear Related Forgings: 35CrMo, 34CrMo4, 4137, 42CrMo, 4140, SCM440, 20CrMnMo, 40CrNiMo, 20CrNi2Mo,34CrNi3Mo.
Packing and delivery
