Marine Reducer Forged Steel Shafts Finish Machining EF LF VD Melting Process
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 | - |
|
|
|
|
|
|
|
|
|
|
| 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
- 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.
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.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.