20crmnmo Gear Blank Forging For Marine Gear Shaft
Metallurgical Machinery Open Die Forging 20CrMnMo Heavy Industry Gear Shaft
Product Desciption:
Gear shaft of mining machinery(gear shaft of internal combustion engine, marine gear shaft,gear shaft of metallurgical machinery,large scale,precision gear shaft,reducer gear shaft,gear shaft of speed accelerator).
Products reference:
| Materials | 20CrMnMo ,4340,34CrNiMo7-6,18CrNiMo7-6 |
|
Forging equipment |
6000T open die hydropress |
| Application |
Gear shaft of heavy industry,transfer force function |
|
Melting process |
EF+LF+VD |
|
Production process |
Forging+heat treatment+rough machining+QT+hobbing+gear grinding+finish machining |
|
Forging ratio |
≥3.5 |
|
Applicalbe 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 coordinatre measuring machine,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. |
Custom properties
|
Material elements |
C | Si | Mn | P | S | Cr | Ni | Mo |
Others |
| 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 | - |
|
Mechanical properties |
Dia.(mm) |
TS/Rm(Mpa) |
YS/Rp0.2(Mpa) |
EL/A5(%) |
RA/Z(%) |
Type Of notch |
Impact energy |
HBW |
| 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 |
Commerce clause
| MAX weight | 50T |
| MOQ | 1PC |
| Delivery time | 30-50 days |
|
Package |
Plywood case,wooden pallet,steel frame |
| Delivery terms | FOB;CIF;CFR；DDU； |
| Payment terms | T/T,LC |
| Type of shipping |
By ocean,air |
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
Application
Industrial gear shaft is widely used for gear box,mining machine,metallurgical machine,marine engine,generator,railway,internal combustion etc.
Competitive 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.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.