Open Die Forging ss420 Steel Turbine Blade Steel Steam Blade
Forged steel blade with1.4021 420 SUS420JI
This grade(1.4021, sus420JI, 420) is designed to achieve a good balance of corrosion resistant and mechanical properties. The chromium and molybdenum provides corrosion resistance. The low carbon and increased nickel content provides a high strength martensitic structure but with good toughness. There are also significant amounts of austenite and ferrite in the steel. This structure also gives a much improved weldability compared to normal and higher carbon martensitic grades. It is proving to be a replacement for grade 431 (1.4057) in some applications.
Applications which illustrate these features include:
Hydroelectric turbine blades, Mining, cement plants, hydrofoil legs, anti-seismic applications, helicopter landing grids, penstocks, , hardboard and chipboard press plate, propeller shafting, pulp and paper.
| 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 |
Heat treatment:
Normalized / Annealed / Quenched / tempered
Surface Treatment:
painting,plating,polishing,black oxide,transparent anti-rust oil,sand blasting
Quality control:
UT,MT,RT,PT,chemical composition test,mechanical property test,etc.
Inspection:
1, Raw material certificate(material chemical composition)
2, Heat treatment sheet report
3, Dimension inspection report
4, UT test report
Delivery condition:
Hot forged +Rough machined (black surface after Q /T)+ Turned
Competitive Advantage:
Quality control and management to the whole produce process, including ingot smelting, forging, heat treatment, machining and strictly final inspection prior to delivery.
Excellent product quality and service, competitive price, "in-time" delivery.
Product Tags:
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Open Die Forging 420 Steel Turbine Blade Steam Turbine Blades Images
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