Marine diesel engine crankshaft, air compressor crankshaft, crankshaft forgings, alloy steel crankshaft, 4140 crankshaft, 42CrMo4 crankshaft, 4340 crankshaft , Hydraulic Press crankshaft
1st, Products:
Marine diesel engine crankshaft, air compressor crankshaft, crankshaft forgings, alloy steel crankshaft, 4140 crankshaft, 42CrMo4 crankshaft, 4340 crankshaft ,petrol crankshaft
2, Products reference:
| Material | 4140,42CrMo4,4340 |
| Max weight | 50T |
| Application | Crankshaft is most important parts of engine,it take forces from connecting rod, transfer into torque and output to drive others part of engine |
| Melting process | EF+LF+VD |
| Production process | Forging+heat treatment+rough machining+finish machining |
| Forging ratio | ≥3.5 |
| Applicable standard | ASTM,ASME,DIN,JIS,ISO,BS,API,EN |
| Executive standard | JB/GB/EN/DIN/JIS/ASME/ASTM/ISO |
| Certification authority | ABS,DNV,BV,GL,KR,CCS,LR,NK,RINA,RS |
| Delivery term | Rough machining(N+T);finish machining(Q+T) |
| Test equipment | Spectrograph,UT device ,tensile and compact test machine,metalloscope,outside micrometer,bore dial indicator,hardness test machine |
| Service | Our service included the forging, process, heat treatment, finish machining, package, local logistics, customers clearance and maritime transport. We took the customer’s requirements as the principal thing, and pay attention on the products quality. |
3, Custom properties
| Material elements | C | Si | Mn | P | S | Cr | Ni | Mo | V |
| 4140 | 0.38-0.45 | 0.17-0.37 | 0.50-0.80 | ≤0.035 | ≤0.035 | 0.9-1.2 | ≤0.30 | 0.15-0.25 | ----- |
| 42CrMo4 | 0.38-0.45 | ≤0.40 | 0.60-0.90 | ≤0.035 | ≤0.035 | 0.9-1.2 | | 0.15-0.30 | |
| 4340 | 0.38-0.43 | 0.15-0.35 | 0.60-0.80 | ≤0.040 | ≤0.035 | 0.7-0.9 | 1.65-2.0 | 0.2-0.3 | |
4, Process procedure:
Forging process flow quality control: Raw material steel ingot into warehouse(test the chemical content) → Cutting→ Heating(Furnace temperture test) → Heat treatment after forging(Furnace temperture test) Discharge the furnace(blank inspection)→ Machining→ Inspection(UT,MT,Visal diamention, hardness)→ QT→ Inspection(UT, mechanical properties, hardness, grain size)→ Finish machining→ Inspection (dimension)→ Packing and Marking(steel stamp, mark)→ Storage Shipment
5, Commerce clause
| MOQ | 1PC |
| Delivery time | 30-60 days |
| Package | wood pallet,steel frame |
| Delivery term | FOB;CIF;CFR；DDU； |
| Payment term | T/T,LC |
| Type of shipping | By ocean,air |
6, Keywords
Marine diesel engine crankshaft,crankshaft type ship inspection forging,crankshaft classification society certification,can be approved by big ten classification society.
High-precision dimensional tolerance;Excellent mechanical properties;Produce different dimension based on customer’s requirements;Advanced manufacture equipments and inspection devices;Excellent technical personality;Control the production procedure strictly;Pay attention on the package protection;
Quality full service.
Product Tags:
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Alloy Steel ASTM SAE 4340 Crankshaft For Hydraulic Press Images
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