Product Description and Process
heat resistant steel castings manufacturer steel sand casting process foundry
Production process: green sand molding, lost wax investment casting process
Surface treatment process: paint coating
Product Material and Uses
Normally produce with ASTM A297/A297M GradeHD, GradeHF, GradeHH, GradeHK, GradeHP GradeHK-40, GradeHL, GradeHP, GradeHW, GradeHC, GradeHN, ZG30Cr26Ni5, ZG35Cr26Ni12, ZG30Ni35Cr15, ZG40Cr28Ni16, ZG35Ni24Cr18Si2, ZG40Cr25Ni20, ZG40Cr30Ni20, ZG45Ni35Cr26, ZG35Cr24Ni7SiN, ZG35Cr28Ni16, etc.
The heat resistant steel casting products are widely used for heat-engine plant industry, furnace for heat treatment, cast industry, steel industry, turbine components, aircraft industry, etc.
Properties and Applications of high temperature alloys:
ASTM A297 (HC - UNS S92605)
Has a good amount of Chromium for good oxidation resistance at temperatures up to 2000 F (1093 C). Low nickel content to maintain greater resistance to sulphur bearing environments at 2000 F (1093 C).
Cement, Glass, Heat Treating, Industrial Furnace, Oil Refining, Ore Processing, Paper, Power | Zinc Refining |Boiler baffles | Electrodes | Furnace Grate Bars | Gas Outlet Dampers | Kiln Parts | Lute Rings | Rabble Blades and Holders | Recuperators | Salt Pots | Soot Blower Tubes | Support Skids | Tuyeres | Excellent for operational environments involving combustion gases, flue gases, high sulfur, and molten neutral salts | Grate Bars | Molten Salt Pots | Furnace Skids | Injector Tubes | Slag Tapping Blocks | Carbon Disulphide Reformer Coils
ASTM A297 (HD- UNS J93005) / ASTM A608 (HD50 - UNS J93015 )
Austenitic with some ferrite (weakly magnetic and cannot be hardened much ).
Load-bearing operations where temperatures don't exceed 1200 F (649 C)| Light load-bearing operations with temperature max 1900 F (1040 C) | Surfur resistance | Oxidation Resistance | Good Weldability | Centrifugal Castings | Brazing Furnace Components for the copper, glass, heat treating, oil refining, ore processing industries |Cracking Equipment | Furnace Blowers | Pouring Spouts | Gas Burner Parts | Holding Pots | Cement Kiln Ends | Roaster furnace rabble arms and blades |recuperater sections | Handling of Combustion and Flue Gases | Handling of High Sulfur Atmospheres | Handling of Copper Alloys and Molten Copper | Rotary Kiln Ring Entrance
ASTM A297 - J93303 (HH) / ASTM A447 - J93503 (HH I and HH II) / ASTM A608 ( HH30 - UNS J93513 / HH33 - UNS J93633)
Good Strength / oxidation resistance at 1400 - 1800 F (760-982 C ) maximum operating temperature 2000 F (1093 C).
Rabble arms and blades | grate bars | cement kiln cooling chain and shackles | tuyeres | furnace burner nozzles | radiant heater tubes and fittings | tube supports and hangers | tube sheets | heat treatment furnace hardware | furnace retorts and muffles | inderizing sidewalls |Annealing trays | billet skids | burner nozzles | carburizing boxes | convection tube supports | dampers, exhaust manifolds | flue gases stacks | grate supports | hardening trays | kiln nose ring segments | normalizing discs | pier caps | quenching trays | radiant tubes and supports | refractory supports | retorts | roller hearths and rails | stoker parts | tube hangers | Elbows
ASTM A297 (HK ) / A351 (HK30 and HK40) / A567 (HK40 and HK50 - 1987 Discontinued Specifications) / A608 (HK30 and HK40)
The HK alloy steel has been the industry standard for 40 plus years due to its moderately high temperature strength, resistance to hot gas and sulfur-bearing hot gas corrosions, oxidation resistance, high creep and rupture strengths, and carburization resistance. Often used in structiral applications up to 2100 F (1150 C) . Often used in as cast condition; it has good machinability and very weldable without the required preheat or post heat.
HK30 and HK 40 are often used for pressure-containing parts used in environments with elevated temperature and corrosive service ( in reference of ASTM A351) and centrifugally cast parts ( ASTM A608)
Furnace Tubes and Calcining| Ammonia, Molten Neutral Salts, Methanol and Hydrogen Reformers | Ethylene Pyrolysis Coils and Fittings | Steam Super-heater Tubes and Fittings | Tube Supports and Hangers | Tube Sheets | Heat Treatment Fixtures and Trays | Refractory Supports | Furnace Skids | Furnace Rolls | Rabble Arms |Steam Hydrocarbon Reformer | Elbows