Description
We are professional Forging Steel valve Closures, forging steel ball valve Closures, forged steel globle valve Closures, forged steel check valve Closures, forged steel gate valve Closures manucturer from china
Following is material grade that normally used in forged steel valve Closures
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 for all Forging Steel valve Closures as per client choices
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
The material of Forging Steel valve Closures shall be melted using a fully-killed practice.
The grain size (prior-austenite grain size) shall be ASTM grain size number of 5 or finer (fine grain) in accordance with the test methods per ASTM E112."
Forging Steel valve Closures shall be free of cracks, mill laps, seams or other defects. Specification for 4330 Vanadium Modified Alloy Steel
Forging Steel valve Closures shall have had a hot-work reduction ratio of at least 6:1. Depending on the size and type of component, the reductions ratios of 4:1 may be approved by clients
We also provide surface treatment supply capabilities include ENP, chrome plating,tungsten carbide, inconel,monel,stainless steel cladding to meet customers' high-strength,corrosion-resistant, anti-corrosion and other industrial and mining requirements
FOllowing is production and inspection standard of forged valve Closures
ASTM A370 (Standard Test Methods and Definitions for Mechanical Testing of Steel Products)
ASTM A751 (Standard Test Methods, Practices, and Terminology for Chemical Analysis of Steel
Products)
ASTM E112 (Standard Test Methods for Determining Average Grain Size)
ASTM A668 (Standard Specification for Steel Forgings, Carbon and Alloy, for General Industrial Use)
API 8A (Specification for Drilling and Production Hoisting Equipment)
API 8C (Specification for Drilling and Production Hoisting Equipment, PSL1 and PSL2)
Following is production process of forged valve Closures s as follows:purchase ingot,ingot melting,check the surface,elements analysis,store in warehouse,forging process planning，cutting，heating,forging,heat treatment after forging,rough products inspection,rough machining on surface, Ultrasonic test, Rough machining, Ultrasonic test again, quenching and tempering treatment, samples,mechanical property and metallurgical test hardness test, rough machined on surface again, ultrasonic test,. semo-finish machined, final machined ,all dimention inspection, UT test, MT test, packages, store in warehouse
QUALITY CONTROL DOCUMENTATION Of finished forged valve Closures
Quality control documentation package shall be provided for each order, lot, shipment or heat. The
documentation package shall include the following information:"
Purchase order, grade, heat number, size, weight, and condition
. Melt practice
Making practice (such as forgings, rolled bars or seamless tubing)
.Chemical composition analysis results" Heat treatment procedure (time, temperature, and cooling rate for each process) Mechanical properties test results (tensile strength, yield strength,elongation,reduction of area,
hardness, Charpy impact toughness,test sample location, orientation, sizes, and test temperature)
. Grain size
We could make forged, heat treatment and final machined forged valve Closures as per clients drawing
