Description
We are professional Forging Steel valve Stems, forging steel ball valve Stems, forged steel globle valve Stems, forged steel check valve Stems, forged steel gate valve Stems manucturer from china
Following is material grade that normally used in forged steel valve Stems
ASTM A105、Sa350 LF2ASTM A694-F50/F55/F60/F70,Sa350 LF6,A182-F6a,AISI 410SS,A182-F6NM,4140, 4130,AISI 8620,AISI 8630,A182-F91,A182-F92,A182-F11,A182-F22.A182-F12,A182-F304,A182-F316,A182-F317,A182-F347,A182-F304L,F316LA182-F321,A182-F316LN, A182-316N, AISI 317LMN, AISI 317LN,AISI 316Ti
ASTM A182-F44,ASTM A182-F60,ASTM A182-F61,ASTM A182-F51、ASTM A182-F53、A286,ASTM A182-F55,17-4ph,Xm-19,Nitronic 50,Nitronic 60,,Alloy 20,Sanicro 28, UNS N08028, 904L,15-5ph,17-7ph,Ph15-7 Mo,254Smo,Al-6Xn,654SMO,,UNS N08028.UNS N08367,UNS S31254 UNS S32750.UNS S32550,UNS S32760UNS S31803
Inconel 718, Inconel 625,,Inconel 600,inconel 601,inconel 725,inconel X-750
Incoloy 825,incoloy 800/800H/800HT,Incoloy 925,Incoloy 926
Monel 400/K500,
Hastelloy C276,Hastelloy C22,Hastelloy C-4,Hastelloy B-2,,Hastelloy B-4, Hastelloy G30, Hastelloy G50
FOllowing is melting methods of Forging steel valve Stems
1 EAF: Electric Arc Furnace
2 EAF+LF+VD: Refined-smelting and vacuum degassing
3 EAF+ESR: Electro Slag Remelting
4 EAF+PESR: protective atmosphere Electro Slag Remelting
5 VIM+PESR: Vacuum induction melting
FOllowing is production process of forged steel valve stems
forging, rough machining, heat treatment and final machining. The manufacture process is as follows: smelting→Ingot →heating → forging → Heat treatment → Inspection → rough machining → UT → 2nd Heat treatment (Quenching and tempering) →mechanical properties tests (our own laboratory)→ finishing machining → Inspection(DT, UT, MT or PT.) → Reports, package and delivery
We could forged, heat treatment and final machined valve Stems as per clients drawing
Also we could do following surface finish of all our forged valve Stems
ENP
Chrome Plating
Tungsten Carbide
Spray Stellite
Spray Nickel Alloy
Spray Cobalt Alloy etc.
All our finished Forging steel valve Stems will have following inspection:
Chemical analyses
Mechanical analyse
UT testing according several norms
MPI testing
Spectral analyse
Hardness measurement according several methods
Tensile and bending tests
Impact test according several methods
Microscope investigation
Huey test
Interkristal corrosion test
Red white test
X-Ray test
3D dimensional check
Magnetic test
Dye penetrant test
Positive Alloy Material Identification (PAMI)
Magnetic particle test
MARKING of finished Forging steel valve Stems is as followings
All parts shall be marked by stamping or forged in marking. The marking shall include:
Sign of manufacturer
Heat number
Test specimen number
Heat treatment number (if applicable)
Material type:
Serial number (if applicable)
