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Marine Reducer Forged Steel Shafts Finish Machining EF LF VD Melting Process
Products:
Marine reducer shaft,accelerator shaft,transmission reducer
shaft,Mining reducer shaft,accelerator gear shaft.
Products reference:
Material | 4340,20CrMnMo,34CrNiMo7-6,18CrNiMo7-6 |
Forging equipment | 6000T open die hydropress |
Application | Transmission parts of gear box,control speed of gear box |
Melt process | EF+LF+VD |
Production process | Forging+heat treatment+rough machining+QT+hobbing+gear grinding+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 authorities | ISO9001:2008,TÜV(BV),(LR),ABS,RINA,(GL),(KR),(DNV),(NK),PED. |
Delivery terms | Rough machining(N+T);finish machining(Q+T),nitriding quenching |
Test machine | Spectrograph,UT device,tensile and compact test machine,metalloscope,outside micrometer,bore dial indicator,trilinear coordinate measuring instrument |
Custom properties
Material elements | C | Si | Mn | P | S | Cr | Ni | Mo | |
20CrMnMo | 0.17-0.23 | 0.17-0.37 | 0.90-1.20 | 0.035 | 0.035 | 1.10-1.40 | 0.30 | 0.20-0.30 | 0.17-0.23 |
34CrNiMo6 | 0.30-0.38 | ≤0.040 | 0.50-0.80 | ≤0.035 | ≤0.035 | 1.30-1.70 | 1.30-1.70 | 0.15-0.30 | |
18CrNiMo7-6 | 0.15-0.21 | 0.17-0.35 | 0.50-0.90 | ≤0.025 | ≤0.025 | 1.50-1.80 | 1.40-1.70 | 0.25-0.35 | |
4340 | 0.38-0.43 | 0.15-0.35 | 0.60-0.80 | ≤0.035 | ≤0.040 | 0.70-0.90 | 1.65-2.00 | 0.20-0.30 | - |
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20CrMnMo | Ø15 | ≥1180 | ≥885 | ≥10 | ≥45 | V | ≥55 | ≤217HBS |
34CrNiMo6 | Ø15 | 750-900 | 450-600 | ≥13 | ≥55 | V | -40℃≥20 | ≤269HBS |
18CrNiMo7-6 | Ø15 | ≥980 | ≥785 | ≥9 | ≥40 | V | ≥47 | ≤269HBS |
4340 | Ø15 | ≥980 | ≥835 | ≥12 | ≥55 | V | ≥78 | ≤179HBS |
Process procedure:
Forging process flow quality control:
1. Raw material steel ingot into warehouse(test the chemical
content)
2. Cutting→ Heating(Furnace temperture test)
3. Heat treatment after forging(Furnace temperture test) Discharge
the furnace(blank inspection)
4. Machining→ Inspection(UT,MT,Visal diamention, hardness)
5. QT→ Inspection(UT, mechanical properties, hardness, grain size)
6. Finish machining
7. Inspection (dimension)
8. Packing and Marking(steel stamp, mark)
9. Storage Shipment
Commerce clause
MAX weight | 30T |
MOQ | 1PC |
Delivery time | 30-50days |
Package | Ply wood case,wood pallet,steel frame |
Delivery terms | FOB;CIF;CFR;DDU; |
Payment terms | T/T,LC |
Type of shipping | By ocean ,air |
Keywords
Reducer shaft by means of the speed change coordinate between
accelerator gear shaft,reducer gear shaft,transmission gear
shaft,widely used in the area of mining machinery,marine
equipments,metallurgical machinery
Advantage
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.
We are professional forging supplier, if you are interested, please come here.