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China Complex Shape Precision Steel Investment Castings Manufacturer, Supplier, Factory
Complex Shape Precision Steel Investment Castings are precision metal components produced through ceramic-shell investment casting, with Ningbo United Machine Co., Ltd. serving as a China manufacturer for engineered cast components. The process supports carbon steel, alloy steel, stainless steel and ductile iron, with a stated single casting weight range of 0.01 kg to 30 kg.
Product Scope
Investment casting uses a wax pattern and ceramic shell to reproduce the required component geometry. The method is suitable for parts where conventional casting routes may not provide the required level of detail or dimensional control.
1. Complex geometries: Wax patterns can reproduce fine details and complicated component profiles.
2. Precision requirements: The stated casting tolerance range is CT5 to CT6.
3. Material selection: The listed casting materials include carbon steel, alloy steel, stainless steel and ductile iron.
4. Part size: The stated single casting weight range is 0.01 kg to 30 kg.
Process Details
The casting route is based on ceramic-shell molding. According to the supplied process information, aluminum molds and steel molds can be used, with middle-temperature wax for pattern production. The shell materials include silica sol, mullite sand and zircon sand.
| Item | Specification |
| Process | Investment casting |
| Mold | General aluminum mold and steel mold |
| Wax | Middle temperature wax |
| Shell material | Silica sol, mullite sand, zircon sand |
| Tolerance | CT5 to CT6 |
| Single casting weight | 0.01 kg to 30 kg |
| Surface roughness | Ra6.3 |
| Materials | Carbon steel, alloy steel, stainless steel, ductile iron |
Material Options
Material selection can be matched to the component requirements and intended industrial application. The available material categories cover several commonly used ferrous casting materials.
● Carbon steel: Available for components requiring a steel casting material.
● Alloy steel: Available where an alloy steel casting grade is specified for the component.
● Stainless steel: Suitable for component designs where stainless steel is required.
● Ductile iron: Included within the listed casting material range.
The material should be confirmed according to the component drawing, technical requirements and application conditions before production.
Precision Control
Dimensional accuracy is an important reason for using Complex Shape Precision Steel Investment Castings on detailed components. The supplied process specification gives a CT5 to CT6 tolerance range and a surface roughness value of Ra6.3.
1. Dimensional inspection: The company's listed inspection equipment includes CMM, articulated arm CMM, projector, image detection systems and pneumatic micrometers.
2. Material verification: Spectrum equipment and metallographic analysis are listed for material composition and microstructure evaluation.
3. Mechanical testing: Universal strength testing and HRC, HB and HV hardness testing are included in the listed quality-control capabilities.
4. Non-destructive testing: X-Ray, MPI and ultrasonic testing are listed among the company's inspection capabilities.
Engineering Support
Ningbo United Machine Co., Ltd. describes itself as an engineering-oriented OEM and ODM specialist established in 2002. Its manufacturing network includes five specialized factories and multiple production capabilities, including casting, die casting, stamping, machining, welding, forging, sheet metal, plastic injection molding and assembly.
This broader manufacturing structure is relevant when a casting component also requires additional manufacturing processes. The company states that its vertically integrated production ecosystem covers the transition from raw materials to precision components and complex assemblies.
● OEM and ODM experience: The company states that it has more than 20 years of OEM and ODM experience.
● Manufacturing integration: Five specialized factories provide multiple manufacturing capabilities within the company network.
● Engineering involvement: The company describes its model as engineering-centric, with experience across different manufacturing disciplines and industry requirements.
Quality System
Quality control is supported by documented processes and an in-house QC program. The company states that quality procedures cover purchasing, raw-material receiving, production processes, final inspection and shipping of finished goods.
Ningbo United Machine Co., Ltd. lists ISO 9001 and IATF 16949 certification on its website. Its Our Strength page also lists ISO 14001 and Marine Certification.
| Quality area | Listed capability |
| Quality management | ISO 9001 |
| Automotive quality system | IATF 16949 |
| Environmental management | ISO 14001 |
| Material analysis | Spectrum and metallographic analysis |
| Dimensional inspection | CMM, articulated arm CMM, projector and image detection |
| NDT | X-Ray, MPI and ultrasonic testing |
Industry Uses
The company identifies several industries served through its manufacturing capabilities, including rail, power, marine, automotive and truck, construction machinery and hardware. Complex Shape Precision Steel Investment Castings can therefore be considered within the broader range of engineered components used across these industrial sectors.
1. Rail industry: Precision metal components for rail-related equipment and systems.
2. Power industry: Engineered components used within power-related equipment.
3. Marine industry: Cast components for marine-related applications.
4. Automotive and truck: Components manufactured within the company's automotive-related production capabilities.
5. Construction machinery: Metal components for construction machinery and related equipment.
6. Hardware: Precision-engineered metal components for hardware applications.
FAQ
Q: What materials are available for Complex Shape Precision Steel Investment Castings?
A: The listed materials include carbon steel, alloy steel, stainless steel and ductile iron. The appropriate material should be confirmed according to the component drawing, technical requirements and intended application.
Q: What tolerance can the investment casting process achieve?
A: The supplied process specification states a tolerance range of CT5 to CT6. Actual dimensional requirements should be reviewed against the component drawing and technical specifications.
Q: What is the casting weight range?
A: The stated single casting weight range is 0.01 kg to 30 kg. The applicable weight depends on the component design and casting requirements.
Q: Which ceramic shell materials are available?
A: The listed shell materials are silica sol, mullite sand and zircon sand. The appropriate shell system can be selected according to the casting process and component requirements.
Q: What inspection equipment is available for cast components?
A: The company's listed quality-control equipment includes CMM, articulated arm CMM, projector, image detection, pneumatic micrometer, spectrum analysis, metallographic analysis, universal strength testing, hardness testing, X-Ray, MPI and ultrasonic testing.
Q: Can Ningbo United Machine support OEM or ODM casting projects?
A: Yes. Ningbo United Machine Co., Ltd. describes itself as an OEM and ODM specialist and states that it has more than 20 years of OEM and ODM experience. Its engineering-oriented manufacturing model covers casting and several other production capabilities.
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