Power Transmission Equipment

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34CrNiMo6 / 18CrNiMo7-6 / 4140 Heavy Steel Forgings Wind Turbine Main Shaft ?

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Products:

wind power main shaft/shaft, wind power tubine shaft, coupling, main shaft forging, wind power forging and alloy steel shaft.

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Products reference:

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? Material | ? 34CrNiMo6,18CrNiMo7-6,4140 |
? Max. power | ? 5MW |
? Apply for | ? Its used in wind power generator box play the role of transmission. The turning fan drive the main shaft, and ganged the speed changer. |
? Melting process | ? LF+EF+VD |
? Process technology | ? ? Forging+heat treatment+rough machining+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 authority | ? ? ISO9001:2008,BV,GSG,IST,UL.CTI |
? Delivery terms | ? Rough machining(N+T); finish machining(Q+T) |
? Test equipment | ? Spectrograph, UT device, tensile and compact test machine, metalloscope,external micrometer, bore dial indicator, hardness testing device and so on. |
? 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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Custom properties

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? Material elements | C | Si | Mn | P | S | Cr | Ni | Mo | ? Others |
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 | ? |
4140 | 0.38-0.43 | 0.15-0.35 | 0.60-0.90 | ≤0.035 | ≤0.040 | 0.80-1.10 | -- | 0.15-0.25 | - |
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 | ? |
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? Mechainal properties | ? Dia.(mm) | ? TS/Rm(Mpa) | ? YS/Rp0.2(Mpa) | ? EL/A5(%) | ? RA/Z(%) | ? Type Of notch | ? Impact energy | ? HBW |
34CrNiMo6 | ?15 | 750-900 | 450-600 | ≥13 | ≥55 | V | -40℃≥20 | ≤269HBS |
4140 | ?10 | 740~1000 | 450~850 | ≥12 | ≥25 | V | ≥40 | ≤250HBS |
18CrNiMo7-6 | ?15 | ≥980 | ≥785 | ≥9 | ≥40 | V | ≥47 | ≤269HBS |
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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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Commerce clause

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? Max. weight | ? 35T |
? MOQ | ? 1PC |
? Delivery time | ? 30-50 days |
? Package | ? Poly wood case, wood pallet, steel frame support |
? Delivery terms | ? FOB;CIF;CFR；DDU； |
? Payment terms | ? T/T,LC |
? Type of shipping | ? By ocean, air |
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Keywords

It is widely used in wind site, ocean wind power and other green energy resource with high mechanical properties requirements for wind power main shaft. It is suitable for various of wind power shafts.

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Features
# Produce different dimension based on customer’s requirements;
# Advanced manufacture equipments and inspection devices;
# Excellent technical personality;
# Control the production procedure strictly;
# High-precision dimensional tolerance;
# Excellent mechanical properties;



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