4340 20CrMnMo EN25 X9931 Bevel Gear Helical Gear Conic Gear Taper Gear Turning Gear
4340 20CrMnMo EN25 x9931 bevel gear helical gear conic gear,taper gear,turning gear
Products reference:
| Material | AISI 4340,20CrMnMo,EN25,x9931,OCT 4543-71 |
| Forging equipment | 5T electro hydraulic hammer |
|
Application |
Bevel gear,conic gear,used for transmission of intersectant axis |
| Melting process |
LF+EAF+VD |
|
Process technology |
Forging+heat treatment+rough machining+QT+CNC finish machining |
| Forging ratio | ≥4 |
| Grain size | ASTM E112 6 or better |
| UT | SEP 1921-84 D/d |
| Hardness | 217-248HB |
| Surface finish degree | ≥1.6 |
| Applicable standard |
ASTM,ASME,DIN,JIS,ISO,BS,API,EN |
| Executive standard | JB/GB/EN/DIN/JIS/ASME/ASTM/ISO |
| Certification authority | ISO,BV,SGS, IST, UL,CTI |
|
Delivery term |
Rough machining(N+T);finish machining(Q+T) |
| Test equipment |
Spectrograph,UT device,tensile and impact test machine,metalloscope,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:
|
Chemical composition |
C | Si | Mn | P | S | Cr | Ni | Mo | H |
| OCT 4543-71 | 0.36-0.44 | 0.17-0.37 | 0.50-0.80 | ≤0.035 | ≤0.035 | 0.80-1.10 | ≤0.30 | -- | ≤2.0ppm |
|
Mechanical properyt |
Dia.(mm) |
TS/Rm(Mpa) |
YS/Rp0.2(Mpa) |
EL/A5(%) |
RA/Z(%) |
Type Of notch |
Impact energy |
HBW |
| OCT 4543-71 | Ø15 | ≥615 | ≥395 | ≥15 | ≥45 | U | ≥160 | 217-248 |
Nonmetallic inclusion ASTM E45(JK):
| Type | A | B | C | D |
| H≤ | 1.5 | 1.5 | 1.0 | 1.0 |
| T≤ | 2.0 | 2.0 | 1.5 | 1.5 |
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
Commerce clause:
| Max weight | 3000KG |
| MOQ | 10PC |
| Delivery term | 20-40 Days |
| Package | wooden case,wooden pallet,steel frame |
| Delivery term | FOB;CIF;CFR；DDU； |
| Payment term | T/T,LC |
|
Transportation |
Ocean,air |
Keywords:
Single stage gear ratio can reach 6,max to 8 or above,transmission efficiency normally is 0.94~0.98.
- It’s easy to design,produce,install spur gear and bevel gear,but high noise,used for low speed transmission(<5m/s);spur gear and bevel gear’s transmission power can reach 370kw,peripheral speed 5m/s.bevel gear transmission is stable,big loading ability,but difficult to produce,less application.
- Curved teeth bevel gear has features of transmit stable,low noise,big loading capacity,used for high speed,heavy loading condition.transmission power can reach 3700kg,peripheral speed above 40m/s.contains spur bevel gear and spiral bevel gear.
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.
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