Audited Supplier
forging 4140 crank shaft QT
Agricultural Equipment, Automotive Industry, Construction Industry
CE, ISO9001
Medium Corrosion Resistance
IT6-IT9
0.01-0.03mm
0.63-0.16μm
Crankshaft
Medium Strength
Plating
Standard Tolerance
Roungh Machining
Alloy Steel
Drive Shaft
Stiffness / Rigid Axle
Straight Shaft
Stepped Shaft
Round
forging steel camshaft
Box or Wooden Package
forged steel eccentric shaft
China
7326
Product Description
Forged steel shaft bar are use in industry, such as forging equipment; power plant equipment; hydraulic equipment; rolling mill equipment; petroleum machinery, etc.
The production process as "EF + (LF) + (VD) + ESR + forging and annealing (or normalizing) + heat treatment (quenching and tempering) + Machining + packaging + delivery. "
Quality control: chemical analysis, optical spectrum instrument, Mechanical properties for tensile strength, yield stress and elongation. Hardness testing, impact testing, coordinate measuring machine (CMM), metallographic analysis, magnetic flaw detector, Ultrasonic flaw detector.
| Description | Forged steel crank-shaft |
| Material | Alloy steel (42CrMo, 35CrMo, 40CrNiMo etc.), carbon steel(1020,1045), stainless steel(304,316,416,630) etc. |
| Material standard | ASTM, ISO and EN etc. |
| Dimension | OD: 1500mm/ID: 900mm Length: 1000mm |
| Weight | 10000Kg |
| Smelting Process: | EF+LF + VD |
| Process | Ingot →Heat → forging → Heat treatment (Normalizing+ tempering) → Inspection →rough machining→UT →2nd Heat treatment →finishing machining →Inspection |
| UT standard | ASTM A388 or EN10228.3 level 3 |
| 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 |
