Description
Comprehensive Product Overview
When conventional austenitic stainless steels and standard duplex alloys reach their mechanical and chemical limits, our precision Nickel-Based Alloy Castings deliver reliable, long-lasting performance. Designed for critical components in polymer compounding, chemical/petrochemical processing, marine engineering, power generation, and aerospace sectors, our nickel superalloys provide unparalleled resistance to high-temperature creep, thermal shock, extreme oxidation, and aggressive acidic media.
Through state-of-the-art metallurgical control—integrating Vacuum Induction Melting (VIM), optimized grain boundary chemistry, and custom centrifugal/investment casting technologies—we eliminate casting porosity and structural micro-segregation. Every casting is engineered to maximize operational uptime (OEE) and significantly reduce Total Cost of Ownership (TCO) across severe wear and corrosive operational cycles.
| Nickel—Base Alloy Casting | ||||||||||||||
| Trademark | Nominal Chemical Composition(wt%) | HRC | Application | Reference Standard | ||||||||||
| C | Cr | Si | W | Ni | Fe | Mn | Mo | Co/Nb | B/Ti/Nb | P/Al | ||||
| CAG-Z Ni60 | 0.45 | 16.00 | 3.00 | — | Bal | 10.00 | 1.50 | — | — | — | — | — | heat exchanger pipe, valve, etc | — |
| CAG-Z Ni625 | 0.05 | 22.00 | 1.00 | — | Bal | 5.00 | 1.00 | 9.50 | Nb: 4.00 | — | — | — | chemical industry, environmental protection, petroleum and gas refinery, marine and nuclear industry, etc | — |
| CAG-Z Ni718 | 0.08 | 19.00 | 0.35 | — | 53.00 | Bal | ≤ 0.50 | 3.00 | 1.00 | Ti: 0.9 Nb: 5.0 |
Al: 0.6 | — | aerospace petroleum and gas refinery, nuclear industry, etc | — |
| CAG-Z Ni30 | ≤ 0.20 | 3.00 | 3.00 | — | Bal | ≤ 5.00 | — | — | — | 2.20 | — | 28-32 | glass molds, etc | — |
| CAG-Z Ni34 | ≤ 0.20 | 3.00 | 3.10 | — | Bal | ≤ 5.00 | — | — | — | 2.40 | — | 28-34 | glass molds, etc | — |
| CAG-Z Ni40 | ≤ 0.20 | 3.00 | 3.20 | — | Bal | ≤ 5.00 | — | — | — | 2.40 | — | 35-42 | glass molds, etc | — |
| CAG-Z Ni44 | ≤ 0.20 | 3.00 | 3.00 | — | Bal | ≤ 5.00 | — | — | — | 2.40 | — | 38-44 | glass molds, etc | — |
Advanced Casting & Manufacturing Capabilities
We operate dedicated manufacturing lines configured specifically for the high melting points, active reactive elements, and narrow solidification ranges of nickel-base superalloys:
A. Precision Investment Casting (Lost Wax Casting)
•Geometric Precision: Ideal for intricate flow channels, thin-walled structures, and complex valve/pump components.
•Dimensional Tolerances: Conforms to ISO 8062 CT4–CT6 / ASTM A957 standards.
•Surface Quality: As-cast surface roughness of Ra 3.2 – 6.3 µm, minimizing finish machining allowances.
•Weight Range: 0.05 kg up to 120 kg per casting.
B. High-G Centrifugal Casting
•Structural Integrity: Centrifugal force (up to 60–80G) forces impurities to the inner bore for machining removal, resulting in 100% dense, pore-free, fine equiaxed microstructure.
•Product Forms: Extruder bimetallic barrels, twin-screw liners, cylinder sleeves, heavy-wall pipe spools, bearing rings, and valve seat inserts.
•Dimensions: Outer diameter from Ø30 mm to Ø1,200 mm; lengths up to 4,500 mm.
C. Ceramic Mold & Resin Sand Casting
•Heavy Engineering: Designed for heavy-duty industrial pump casings, large chemical reactor impellers, compressor housings, and marine manifolds.
•Capacity: Unit weight capability up to 3,500 kg with optimized solidification simulation (MAGMA / ProCAST).
D. CNC Precision Machining & Surface Finishing
•Multi-Axis Machining: Equipped with 4-axis/5-axis CNC machining centers, high-rigidity heavy lathes, and deep-hole drilling systems.
•Ultra-Precision Mirror Honing: Extruder bore inner diameter honing down to Ra ≤ 0.2 µm with cylindricity within 0.015 mm.
Rigorous Quality Assurance & Inspection Standards
Every production batch undergoes strict quality gates and metallurgical certification prior to dispatch:
•Chemical Analysis: Direct Reading Optical Emission Spectrometry (OES) and High-Precision Carbon/Sulfur Combustion Analyzers for exact melt chemistry verification.
•Non-Destructive Testing (NDT): 100% Radiographic Testing (RT per ASTM E192/E446 Level I/II), Ultrasonic Testing (UT per ASTM A609), and Liquid Penetrant Testing (PT per ASTM E165).
•Mechanical Testing: High-temperature & room-temperature tensile testing, yield strength, elongation, Rockwell/Brinell hardness testing, and Charpy V-Notch impact testing.
•Metallographic & Intergranular Testing: Microstructural grain size evaluation (ASTM E112) and intergranular corrosion testing (ASTM G28 Methods A & B / ASTM A262 Practice B).
•Dimensional Verification: Coordinate Measuring Machine (CMM) 3D inspection, optical scanning, and air-gauge bore measurement with complete dimensional verification reports.
Target Industries & Key Application Components
| Industry Sector | Typical Operating Conditions | Key Cast Components |
|---|---|---|
| Polymer & Plastics Compounding | Extrusion of high glass-fiber reinforced PA/PBT/PPS, fluoropolymers (PVDF/PTFE), halogen-free flame retardants, and recycled PCR plastics. | Twin-screw extruder bimetallic barrels, oval liner inserts, kneader blocks, feed throat blocks, pelletizing die plates. |
| Chemical & Petrochemical | Hot concentrated sulfuric/hydrochloric acids, chlorination reactors, organic synthesis, and organic solvent recovery systems. | Chemical pump impellers, pump volute casings, reactor agitator blades, heat exchanger tubesheets, thermowells, pipe fittings. |
| Oil & Gas / Offshore & Marine | Sour gas service (H2S / CO2), deep-sea subsea manifolds, high chloride seawater injection, and extreme marine cavitation. | Subsea choke valve bodies, ball valve trims, seawater pump diffusers, downhole tooling housings, marine propeller hubs. |
| Power Gen & Industrial Furnaces | High-temperature flue gas, cyclic thermal shock (800°C–1,100°C), carburizing atmospheres, and sulfur vapor exposure. | Gas turbine swirlers, burner nozzles, furnace roller sleeves, radiant tube return bends, damper valves. |
| Flue Gas Desulfurization (FGD) | Highly abrasive gypsum slurry combined with high chloride, acidic scrubbing liquor (pH 3–5). | Heavy-duty slurry pump impellers, suction liners, casing wear rings, spray nozzle assemblies. |
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