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Precision Investment Casting Super Duplex Stainless Steel Products From China Lost Wax Casting Foundry

Precision Investment Casting Super Duplex Stainless Steel Products From China Lost Wax Casting Foundry

Overview
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In the demanding sectors of oil and gas, chemical processing, and marine engineering, material performance under extreme conditions is paramount. Our China lost wax casting foundry specializes in precision investment casting of super duplex stainless steel products, delivering components that excel in strength, corrosion resistance, and reliability. Leveraging advanced metallurgical expertise and stringent process controls, we provide OEM and industrial clients worldwide with high-integrity solutions for critical applications.

Material Excellence: Super Duplex Stainless Steel
Super duplex stainless steel (UNS S32750/S32760) offers an exceptional combination of properties derived from its balanced austenite-ferrite microstructure:

Outstanding Corrosion Resistance: Pitting Resistance Equivalent Number (PREN) >40, ensuring performance in chloride-rich environments
High Strength: Yield strength of 550-700 MPa, approximately double that of standard austenitic stainless steels
Excellent Stress Corrosion Cracking Resistance: Suitable for acidic and saline environments
Good Toughness and Ductility: Impact toughness maintained down to -40°C

Advanced Lost Wax Casting Process
Our precision-focused manufacturing methodology includes:

Pattern and Mold Creation
- Multi-cavity wax pattern injection with temperature-controlled systems
- Ceramic shell building using advanced zirconia and alumina slurries
- Controlled drying and firing cycles to prevent shell cracking
Melting and Pouring
- Electric arc furnace melting with precise chemistry control
- Argon oxygen decarburization for optimal nitrogen retention
- Vacuum-assisted pouring to minimize gas porosity and oxide inclusion
Heat Treatment and Finishing
- Solution annealing at 1040-1120°C followed by rapid quenching
- Critical cooling rate control to achieve balanced phase structure
- Electrochemical polishing and passivation for maximum corrosion resistance

Performance Advantages

Superior Mechanical Properties: Combines high strength with excellent fatigue resistance
Exceptional Corrosion Resistance: Withstands pitting, crevice corrosion, and erosion
Design Flexibility: Complex geometries with wall thicknesses from 3mm to 100mm
Cost Efficiency: Reduced material requirements through near-net-shape casting
Long Service Life: Maintains performance in aggressive media and high-pressure conditions

Quality Assurance

ISO 9001:2015 and API Q1 certified quality management
Comprehensive NDT including radiography and dye penetrant testing
Ferrite content control (35-55%) with Fischer measurement
Mechanical testing and corrosion validation per ASTM A923

Applications

Oil & Gas: Subsea components, Christmas tree parts, valve bodies
Chemical Processing: Reactor vessels, heat exchangers, pump casings
Marine Engineering: Propeller shafts, seawater piping systems
Power Generation: FGD systems, condenser components
Pulp & Paper: Bleaching equipment, digestor components

Choose our precision investment casting services for super duplex stainless steel products that deliver unmatched performance in corrosive and high-stress environments. Contact our China foundry today to discuss your project requirements and benefit from our technical expertise in advanced materials and manufacturing processes.

About Us

Precision Investment Casting Super Duplex Stainless Steel Products From China Lost Wax Casting Foundry factory

Precision Investment Casting Super Duplex Stainless Steel Products From China Lost Wax Casting Foundry manufacture

Material	Aluminum,gray cast iron,ductile iron,stainless steel, copper, brass, galvinized etc.
Size	Customized
Surface treatment	Powder coating, electroplating, oxide,anodization
Technics	laser cut, bend, weld, stamp,casting,forging
Certification	ISO9001:2015
OEM	Accept
Drawing Format	3D/CAD/Dwg/IGS/STEP
Color	Customized
Application	Appliance, Auto, Building, Capital equipment, Energy, Instrumentation, Medical device, Telecommunications

Who We Are

Dandong Pengxin Machinery Co., Ltd., founded in 1958, is a private enterprise specializing in casting, machining, and assembly.
Spanning 66,000 m² with 40,000 m² of workshops, it has $40M in assets and 330 employees, including 46 technical staff. Annual capacity reaches 100,000 tons.

Equipped with advanced technologies like high-pressure molding and Japanese FBO Ⅲ production lines, it produces up to 30,000
tons/year. Facilities include 12-pulse electronic furnaces, CNC machines, and a quality inspection center with precision
instruments.

Service

Pre-sales

Get your purchasing needs → Confirm order drawing→ Give customized solution → Offer a quotation → Make the pattern→ Provide samples→ Bulk production after samples approve the test.

On Sale

Drawing Control → Pattern Control → Raw Material Control → Molding Sand Control → Pouring Process Control → Raw Casting & Machining Control →Other Requirement Control→ Packing & Delivery Control.

After-Sales

Proactively get your feedback→ Engineering team gets involved→Casting engineer conducts metallographic and spectral tests based on the inventory test rods→Machining engineer's CMM inspection is based on the inventory samples→Provide solutions based on the test results→Welcome to contact us for your customized solution.

Precision Investment Casting Super Duplex Stainless Steel Products From China Lost Wax Casting Foundry supplier

R&D

Our Company Owns A Provincial Level Technology Center, Plus A 15 Person R&D Team, With average 20+ Years Of R&D Experience. We can help customers design for free according to their requirements, or produce according to the drawings or samples.

Production Capacity

100,000 tons+Annual production capacity for Iron.
30,000 tons+Annual production capacity for Aluminum.
80,000 tons+Annual production capacity for Steel.
4000+Mold develop production.

Quality Control

At Pengxin-Casting, process control begins as early as in the planning and development phase of the products. We support our customers to perform all required tests and inspections in a laboratory. It goes without saying that our plants are certified according to ISO 9001 and IATF16949 in line with a validated quality management. As we strive to accomplish our zero-error policy, you can rely on the following process control measures: Drawing Control → Pattern Control → Raw Material Control → Molding Sand Control → Pouring Process Control → Raw Casting & Machining Control →Other Requirement Control→ Packing & Delivery Control.

Precision Investment Casting Super Duplex Stainless Steel Products From China Lost Wax Casting Foundry details

Pattern Control

We simulate feeding syetem to check the pattern desgin from the filling process and material solidification,In this way, we can shorten the mold development cycle, reduce the number of mold trials and improve product quality.The software we use includes ‌Abaqus,‌Moldflow and Moldex3D,simulate feeding system, reduce casting defects and improve efficiency.