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Marine Reducer Forged Steel Shafts Finish Machining EF LF VD Melting Process

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Contact name:Arnold

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Marine Reducer Forged Steel Shafts Finish Machining EF LF VD Melting Process

Country/Region	china
City & Province	jiangsu

Product Details

Marine Reducer Forged Steel Shafts Finish Machining EF LF VD Melting Process

Products:
Marine reducer shaft,accelerator shaft,transmission reducer shaft,Mining reducer shaft,accelerator gear shaft.
Products reference:

Material	4340,20CrMnMo,34CrNiMo7-6,18CrNiMo7-6
Forging equipment	6000T open die hydropress
Application	Transmission parts of gear box,control speed of gear box
Melt process	EF+LF+VD
Production process	Forging+heat treatment+rough machining+QT+hobbing+gear grinding+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 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 coordinate measuring instrument

Custom properties

Material elements	C	Si	Mn	P	S	Cr	Ni	Mo
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

Process procedure:
Forging process flow quality control:
1. Raw material steel ingot into warehouse(test the chemical content)
2. Cutting→ Heating(Furnace temperture test)
3. Heat treatment after forging(Furnace temperture test) Discharge the furnace(blank inspection)
4. Machining→ Inspection(UT,MT,Visal diamention, hardness)
5. QT→ Inspection(UT, mechanical properties, hardness, grain size)
6. Finish machining
7. Inspection (dimension)
8. Packing and Marking(steel stamp, mark)
9. Storage Shipment

Commerce clause

MAX weight	30T
MOQ	1PC
Delivery time	30-50days
Package	Ply wood case,wood pallet,steel frame
Delivery terms	FOB;CIF;CFR；DDU；
Payment terms	T/T,LC
Type of shipping	By ocean ,air

Keywords
Reducer shaft by means of the speed change coordinate between accelerator gear shaft,reducer gear shaft,transmission gear shaft,widely used in the area of mining machinery,marine equipments,metallurgical machinery

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.

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.

We are professional forging supplier, if you are interested, please come here.