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Complex Housing
Investment casting allows multiple functional and structural features to be produced as one integrated component. Bosses, ports, mounting flanges, ribs and connection areas can be incorporated directly into the casting rather than being manufactured separately and welded together.
This helps simplify part construction, reduce assembly operations and improve consistency between connected features.
Industrial housings often contain several openings positioned at different angles or elevations. Investment casting is well suited for these complex geometries and allows external profiles, side ports, mounting holes and transition areas to be formed close to the final shape.
Where required, critical openings can be machined after casting to achieve tighter dimensional or positional tolerances.
Local ribs, thicker sections, mounting bosses and flange areas can be incorporated into the housing design to provide additional rigidity around load-bearing or connection areas.
Wall thickness transitions can also be reviewed during tooling development to improve casting consistency and reduce unnecessary material accumulation.
Producing the housing as a near-net-shape casting can replace structures that would otherwise require multiple welded plates, machined blocks or fabricated subcomponents.
For suitable applications, this can reduce part count, welding operations and subsequent alignment work.
Precision Casting
The component is manufactured through the investment casting process, including wax pattern production, ceramic shell building, dewaxing, metal pouring and final casting cleanup.
This process is suitable for complex steel components requiring detailed geometry, integrated features and better surface definition than many conventional casting processes.
Investment casting can reproduce curved profiles, bosses, recesses, connection features and structural transitions that may be difficult or expensive to produce entirely by machining.
This makes the process especially suitable for custom industrial housings with irregular external shapes or multiple functional interfaces.
Zeren can manufacture custom housings in a range of cast steel materials, including:
Stainless Steel
Carbon Steel
Alloy Steel
Duplex Stainless Steel
Heat-Resistant Steel
Wear-Resistant Steel
Material selection can be based on strength, corrosion resistance, operating temperature, wear requirements and customer specifications.
The casting process is designed to produce the part close to its final geometry. This reduces excessive stock removal during machining and helps improve material utilization.
Machining allowance can be reserved only on critical surfaces such as mounting faces, locating bores or sealing interfaces.
Tooling can be developed from customer 2D drawings, 3D models or approved manufacturing drawings.
During tooling review, casting direction, shrinkage allowance, machining allowance and difficult geometric areas can be evaluated before production.
CNC Finishing
After casting, important functional areas can be CNC machined to meet assembly and dimensional requirements.
Mounting faces
Internal bores
Flange surfaces
Locating surfaces
Bolt holes
Threaded holes
Connection ports
For housings with multiple functional features, machining can be arranged around defined reference datums.
This helps maintain positional relationships between bores, mounting faces, ports and other critical areas.
Complex housing components may require machining from several directions. Appropriate fixturing and multi-operation machining can be used for features located on different faces of the casting.
This is particularly useful for parts with side ports, angled holes or multiple assembly interfaces.
Secondary machining can include drilling, tapping, reaming and boring according to drawing specifications.
Threads and precision holes are normally completed after casting to ensure final dimensional accuracy.
Machining allowance is considered during casting design so that enough material remains for final finishing without creating unnecessary machining volume.
This helps balance casting efficiency and final machining requirements.
For repeat production, dedicated machining fixtures can be developed to improve positioning consistency and production efficiency.
Quality Verification
Finished housings can be inspected against customer drawings for critical dimensions, hole positions, mounting interfaces and overall geometry.
Inspection can be performed during first article approval as well as routine production control.
For components with complex geometry or multiple datum relationships, coordinate measuring machines can be used to verify critical dimensions and positional accuracy.
CMM inspection is particularly useful for machined bores, mounting faces and multi-axis features.
Material composition can be verified according to the specified grade and applicable standard.
Depending on project requirements, chemical composition reports and mechanical property testing can be provided.
Castings are visually inspected for surface defects, incomplete filling, abnormal deformation and other visible casting issues.
Critical components can receive additional inspection depending on application requirements.
Optional non-destructive testing may include:
Dye Penetrant Testing
Magnetic Particle Testing
Ultrasonic Testing
Radiographic Testing
The appropriate method depends on material, geometry and customer inspection requirements.
Hardness can be checked when required, particularly for alloy steel, heat-treated components or applications where mechanical performance is important.
For new projects, first article inspection can be performed before batch production.
This allows dimensions, machining features and overall component quality to be reviewed and approved before full production begins.
Available quality documentation can include dimensional inspection reports, material certificates, hardness reports and other project-specific quality records.
Industrial Applications
Custom equipment housings can be used in industrial machines, automation equipment, processing systems and mechanical assemblies where structural support and multiple connection features are required.
Housing castings can also be applied to pump systems, flow-control equipment and fluid-handling assemblies where ports, mounting interfaces and internal passages need to be integrated into one component.
Steel cast housings may be used in power-generation equipment, mechanical drive systems and related industrial assemblies requiring structural strength and reliable dimensional consistency.
Depending on material selection, custom housings can be manufactured for equipment used in petrochemical processing, fluid transport and other industrial environments.
Stainless steel or duplex steel options can be considered for marine or corrosive environments where improved corrosion resistance is required.
The casting process is also suitable for custom mechanical components that combine structural support, connection interfaces and machined features in one integrated design.
Zeren supports both development and repeat production projects, including:
Drawing review
Tooling development
Prototype casting
Sample machining
First article inspection
Batch production
Surface finishing
Final inspection
By combining investment casting and CNC machining within one supply chain, the housing can move from raw casting to finished machined component without requiring customers to coordinate multiple suppliers.
Additional services such as heat treatment, surface finishing and inspection can also be arranged based on project requirements.
