AISI4340 Forged Steel Special Step Shaft

• Customization: Available
• Technology: Forged
• Surface: Bright
• Model NO.: 4140\4340\42crnimo/42crmo/45c/20c/45c/316L304/F91
• Transport Package: Wooden or Box Package
• Specification: steel forged shaft
• Trademark: forging steel crankshaft
• Origin: China
• HS Code: 73260
• Production Capacity: 3000ton/Month

Product Description

Name: AISI4140 AISI4340 steel forging shaft/ forged steel shaft
1- About Us
We are the leading manufacturer of heavy forging steel parts, our business is custom fabrication forging by customer's drawings  and technical requirement. We are the member of " Confederation of Chinese Metal forming Industry".
2- Standard: DIN, ASTM, ASME, AISI, EN, JIS, GB/T
3- Main Product: Shaft, Step Shaft, Gear & Gear Shaft, Flange, Pipe Fitting, Bearing, and others.
4- Manufacturing Process

Forging	a- Open die forging (product range: Max length 16000mm; Max weight 35 Mt)  b- Ring forging (product range: Max OD 4000mm; Max height 500mm; Max weight 4Mt)
Heat Treatment	Normalizing, Tempering, Annealing, Q + T (Quenching and Tempering)
Machining	Pre-machining, Finish machining
Surface Finishing	Sand blasting, Coating, Painting

5- Raw Material: 
Alloy steel, Carbon steel, Stainless steel, Steel ingot, Round steel bar

Note: The material listed below is only part of usually used material,the other material and special requirement from Customer  is accepted.
Shaft Forgings	25CrMo4, 42CrMo4, 40CrNiMo, 34CrNi3Mo, 25Cr2Ni4MoV,  18CrNiMo5, 30CrMo, 4130, 4140.
Gear Forgings	35CrMo, 34CrMo4, 4137, 42CrMo, 4140, SCM440,  20CrMnMo, 40CrNiMo, 20CrNi2Mo, 20Cr2Ni4A, 34CrNi3Mo.
Marine Forgings	20Mn, 50Mn, C45, 42CrMo, 20MnMo, CK45, 34CrNi1Mo
Pressure Vessel Forgings	SA105, SA350 LF2, 16Mn, 20MnMo, 15MnMo, 12Cr2Mo1,  14Cr1Mo, F304, F316, 17-4PH
Forged tube sheet	SA106 CL B, SA106 CL C, WB36, 12Cr1MoV,  SA335 P11, P12, P22, P91, SA182 Gr.F1, Gr.F5,  Gr.F11 CL2, Gr.F12 CL2, Gr.F22 CL3, SA350 Gr.LF1,  Gr.LF2,Gr.LF3

6- Main Products List
 

Name	Technique	Material	Dia/mm	Wall thickness	Length/mm
Forging shaft	Forging+turning+grinding	alloy steel carbon steel stainless steel	200-800	----	500-20000
Hollow shaft	Forging+drilling+turning		150-800	≥15mm	≤17000
Shaft sleeve	Forge+drill & bore+turning +milling		400-700	≥15mm	≤18000
Large bolt	Rolled/forge+turning+threading		300-800	----	≤17000
Hydraulic cylinder	Forging+drill & bore+ turning		300-2000	≥10mm	≤10000
Other parts in deep-hole	Forge+ drill & bore+turning+mill		300-2000	----	≤20000

Product Fllow
1.Inquiry with drawings in details.
2.Confirm steel material, chemical compositions, mechanical properties, tolerance.
3.Confirm payment terms,order materials or check material in stock.
4.Check material chemical compositions, material weight, dimensions.
5.Cut materials record weight, making mould for casting of pr-hearting for forging.
6.Forging ratios, heat treatment ,dimension check.
7.Rough machining, UT test,heat treatment.
8.Semi-finish, quenching,
8.Fine machining, UT test, dimension inspection, mechanical properties test.
9.Customer inspection, packing, delivery arrangement.

Steel ingot making
EAF+LF+VD/VAD or ESR
Manufacturing process
EAF + LF + VD+ Forging+ Normalizing & Tempering + Rough machining + UT test + Quenching & Tempering + Precision machining
Report
Chemical composition report, Physical properties report, Heat treatment report, Dimensional inspection report, NDT report Nondestructive test (NDT), UT ( ultrasonic testing ), MT ( magnetic particle testing ), PT ( penetrant testing)
Quality certification: ISO 9001: 2008, IQNET