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34CrNiMo6 High Precision Gears Forging Mechanical Nitriding Treatment

30T

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Description

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34CrNiMo6 High Precision Gears Forging Mechanical Nitriding Treatment


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Product Desciption:
Alloy steel gear after heat and nitriding treatment,carburizing of quenching type to reach gear strength,precision gear after gear grinding to meet accuracy requirements,trilinear coordinate measuring machine to check accuracy

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Specification:

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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 | - |
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Mechanical properties | Dia.(mm) | TS/Rm(Mpa) | YS/Rp0.2(Mpa) | EL/A5(%) | RA/Z(%) | Type Of notch | Impact energy | HBW |
20CrMnMo | ?15 | ≥1180 | ≥885 | ≥10 | ≥45 | V | ≥55 | ≤217HBS |
34CrNiMo6 | ?15 | 750-900 | 450-600 | ≥13 | ≥55 | V | -40℃≥20 | ≤269HBS |
18CrNiMo7-6 | ?15 | ≥980 | ≥785 | ≥9 | ≥40 | V | ≥47 | ≤269HBS |
4340 | ?15 | ≥980 | ≥835 | ≥12 | ≥55 | V | ≥78 | ≤179HBS |
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Commerce clause

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Max weight | 30T |
MOQ | 1PC |
Delivery time | 30-50Days |
Package | Plywood case,wooden pallet,steel frame |
Delivery term | FOB;CIF;CFR；DDU； |
Payment term | T/T,LC |
Type of shipping | By ocean,air |
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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

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Products reference:

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Materials | 20CrMnMo ,4340,34CrNiMo7-6,18CrNiMo7-6 |
Forging equipment | 4000T open die hydropress |
Application | High precision gear,gear harden,increase strength,suitable for high strength gear box |
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. |
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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.

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