Name: Hot rolling 16mncr5 S355jr s355J2G3 steel ringlike part
Specification:
| Materail 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 |
-40ºC≥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: 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
Products reference:
| Materials |
20CrMnMo ,4340,34CrNiMo7-6,18CrNiMo7-6 |
| Forging equipment |
6000T open die hydropress |
| Application |
Transmisssion parts of gear box, the speed between gear is adjusted by gear ratio |
| 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. |
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.
1.Trade term:FOB/CIF/CFR.
2.Payment term:T/T or L/C.
3.Inquiry: Please show me drawings and detail technical specifications
4.Delivery Detail:about 35 days from order
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