Open Die Forgings, buy High Strength Gear Box Open Die Forgings Heat Nitriding Treatment on China Suppliers Mobile

Product Details

Delivery Time:30-50Days
Certification:ASTM，ASME，DIN，JIS，ISO，BS，API，EN

High Strength Gear Box Open Die Forgings Heat Nitriding Treatment

Products:

Mining equipment gear,accelerator gear,reducer gear,alloy steel gear,nitriding steel gear.

Mining equipment gear after heat nitriding treatment,carburizing quenching treatment to reach gear strength,to meet the bad condition working,precision mining gear after gear grinding to meet accuracy requirements,trilinear coordiante measuring machine to check the accuracy.

Products reference:

Material	4340,20CrMnMo,34CrNiMo7-6,18CrNiMo7-6
Forging equipment	4000T open die hydropress
Application	Mining equipment gear,gear harden,increase strength,suitable high strength gear box
Melting process	EF+LF+VD
Production process	Forging+heat treatment+rough machining+QT+hobbing+gear grinding+finish machinig
Forging ratio	≥4
Applicable standard	ASTM,ASME,DIN,JIS,ISO,BS,API,EN
Executive standard	JB/GB/EN/DIN/JIS/ASME/ASTM/ISO
Certification authority	ISO9001:2008,TÜV(BV),(LR),ABS,RINA,(GL),(KR),(DNV),(NK),PED.
Delivery term	Rough machining(N+T);finish machining(Q+T),ntriding quenching
Test equipment	Spectrograph,UT device,tensile and compact test machine,metalloscope,outside micrometer,bore dia indicator,trilinear coordinate 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.

Custom properties

Material 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 property	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:

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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