Description
Jiangsu Liangyi professional manufacturer of FV520B open die forging parts and seamless rolled steel forged rings. F520B forged steel steam gas turbine blade steel, FV520B forging steel turbine pump impeller from china
Following is the shape of FV520B forging steel material that we could do is:FV520B Forged Steel round bars square bars Flat bars Rectangles Bars Rods,FV520B Forged forging steel rings seamless rolled rings,FV520B Forged Forging Steel Hubs housing shell Sleeves Bushes Bushing Cases Hollow Bars,FV520B Forged Forging Steel Discs Disks Blocks plates,FV520B Forged Forging Steel Pipe Tubes Tubings Piping Shells Casings Case barrels Housings.
Following is forging products of FV520B material that is used in following industry
FV520B Forged Forging Gas Compressor Turbine Blades steel Flat Rectangles Bars
FV520B Forged Forging Gas steam turbine disks, turbine impeller,turbine blisk,turbine discs
FV520B Forging Steel Forging Forged Gas Steam Turbine Doubled-headed Double end Studs Fasteners Bolts
FV520B Forging Steel gas steam Turbine Guide Rings,seal rings Labyrinth Rings Packing Seal Diaphragm & Seal Ring Rotor End Rings contours Casing Rings
FV520B forged forging steel pump case, pump impeller, pump wear rings, pump shafts
FV520B forged forging steel valve bonnet, valve body, valve closure, valve stems, valve seat rings, valve core, valve discs
FV520B forged forging steel pipes tubes shells piping tubing barrels housing, tube sheets, nozzles, channel flanges for boiler, heat exchanger,pressure vessel,reactors, heaters
The melting methods of FV520B forged steam turbine blade steel is as follows: The Steel shall be made using the basic electric furnace process with either the Electro-Slag Re-Melt (ESR) or Vacuum- Arc-Re-Melt(VAR) process. Alloy melting requirements shall be compatible with AMS5773E.
FV520B is a martensitic precipitation hardening stainless steel which is capable of being hardened by low-temperature treatment. The alloy boasts superior corrosion resistance when compared to standard martensitic grades. Corrosion resistance compares favourably with 304 stainless steel, and as a result, use of the product in marine atmospheres is typical as the effects of rusting are relatively low. FV520B offers improved corrosion resistance in specific environments and also improved intergranular and pitting corrosion characteristics when compared to 17-4PH. While difficult to machine, the alloy does provide good weldability, although the use of matching consumables is advisable. FV520B forging steel is widely used in Impellers and turbine blades,Fasteners,Pumps. valves and hydraulic equipment,Aerospace applications,defence, aerospace equipment and missile components and as a commercial grade in oil and gas industries.
FOllowing is chemical compostion of FV520B forged steel flat bars
Carbon 0.07% max
Chromium 13.20-14.70%
Manganese 1.00% max
Nickel 5.00-6.00%
Silicon 0.70% max
Molybdenum 1.20-2.00%
Phosphorous 0.035% max
Niobium 0.20-0.70%
Sulphur 0.025% max
Copper 1.20-2.00%
Solution Treatment : 1050°C plus air cool
Precipitation Treatment (1st Stage): 750 °C / 2hrs plus air cool
Precipitation Treatment (Final Stage): 550 °C / 2hrs plus air cool
Mechanical properties of FV520B forged round bars shall be tested at room temperature (23 ± 5degree),
- Longitudinal Tensile/Hardness/Impact Properties,
Table2- longitudinal Mechanical Properties
Ultimate tensile strength, Rm, MPa 925-1090
Conventional yield strength, Rp0.2,MPa, min 800
Elongation A,%, min 15
Hardness Brinel 274-341
Impact Room Temp,Charpy ,J,min 55
For melting FV520B forging steel material, we have following melting equipment
60 t Electric Arc Furnace (EAF) / Power 40 MVA
2 Ladle Furnace (LF)
2 Tank Degassing VD - VOD type
Pits for bottom pouring
ESR Plant (max weight 32 t)
In order to make forging and make heat treatment FV520B forging RIngs, we have following production equipment
Forging Process:3200/4200/6000 t Open die presses
Manipulators, Lifting Capacity up to 60 t
Heating Forging Furnaces, Max Capacity 150 t
Furnaces for Hydrogen Bake-Out Up to 14 m
Heat Treatment Semi-automatic Heat Treatment System Quality Heat Treatment
Furnaces Max lenght 18 m Quenching tanks up to 16 m
