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Carbon Steel Accurate Crankshaft Forging Heat Treatment For Marine

Carbon Steel Accurate Crankshaft Forging Heat Treatment For Marine

Brand Name:HUIXUAN
Certification:ABS,DNV,BV,GL,KR,CCS,LR,NK,RINA,RS
Model Number:50T
Minimum Order Quantity:1 piece
Delivery Time:30-60 days
Payment Terms:L/C, T/T
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Address: A 509,HuaJian Mansion,Zhangjiagang City,JiangSu Province,China
Supplier`s last login times: within 26 hours
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Product Details

Carbon Steel Accurate Crankshaft Forging Heat Treatment For Marine


1st, Products:

marine crankshaft,diesel engine crankshaft,ship inspection crankshaft,large scale high precision marine crankshaft


2, Products reference:

Material50Mn,DG20Mn,25Cr2Ni4MoV,34CrNiMo6
Max weight50T
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 processEF+LF+VD
Production process

Forging+heat treatment+rough machining+finish machining

Forging ratio

≥3.5

Applicable standardASTM,ASME,DIN,JIS,ISO,BS,API,EN
Executive standardJB/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

ServiceOur 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

CSiMnPSCrNiMoV
50Mn0.48-0.560.17-0.370.70-1.00≤0.035≤0.035≤0.25≤0.30---
DG20Mn0.17-0.240.17-0.340.70-1.00≤0.035≤0.035≤0.25≤0.25--
25Cr2Ni4MoV≤0.25≤0.23≤0.53≤0.006≤0.004≥1.62≥3.75≥0.33≥0.09
34CrNiMo60.30-0.38≤0.0400.50-0.80≤0.035≤0.0351.30-1.701.30-1.700.15-0.30


Mechanical property


Dia.(mm)


TS/Rm(Mpa)


YS/Rp0.2(Mpa)


EL/A5(%)


RA/Z(%)


Type Of notch


Impact energy


HBW

50MnØ25≥645≥390≥13≥40V≥31≤255HBS
DG20MnØ25≥450≥275≥24≥50
34CrNiMo6Ø15750-900450-600≥13≥55V-40℃≥20≤269HBS

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

MOQ1PC
Delivery time30-60 days
Packagewood pallet,steel frame
Delivery termFOB;CIF;CFR;DDU;
Payment termT/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.


China Carbon Steel Accurate Crankshaft Forging Heat Treatment For Marine supplier

Carbon Steel Accurate Crankshaft Forging Heat Treatment For Marine

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