CUSTOM MANUFACTURING · PROJECT REVIEW
Custom Aluminum Housings for EV Electromechanical Assemblies
An EV assembly housing must locate connectors, mounts and sealing surfaces reliably. Relia reviews aluminium casting and CNC interfaces against your component drawing, while the programme defines the environmental checks and customer documentation required for approval.

RELIA · PRODUCT AND MANUFACTURING SUPPORT
Define the component and supplied scope
Relia's relevant range includes nonstandard aluminium housings and ADC12/A380 automotive parts with machining and finish options. Relia's scope keeps the component drawing and the intended electrical/mechanical interfaces together. This supports a focused housing enquiry while the customer's complete vehicle or electrical system retains its own validation and approval requirements.
| Your requirement | Relia product and service scope |
|---|---|
| Material references | Aluminium; ADC12/A380 on automotive listing |
| Interfaces | Mounting, connectors, seals and thermal contact |
| Drawing inputs | PDF/CAD plus IGES/STEP model |
| Approval scope | Component requirements separated from complete EV-system validation |
02 · MATERIAL
Specify the alloy against the customer requirement
- Customer specification
- Identify the exact alloy, standard and supplied condition.
- Material agreement
- Approve the selected casting route against that requirement.
Our aluminum component references include ADC12 and A380 directions. State the exact alloy, standard and supplied condition your design requires before a material or route is accepted.
Technical notes
Review casting route, machining allowance and finish together. The source descriptions contain mixed process labels, so we confirm the actual aluminium route instead of treating a hot-chamber or lost-wax field as universally applicable. Preserve grounding and heat-transfer surfaces through coating.

MANUFACTURING ROUTE · FEATURES AND CONTROL
Form the Housing and Preserve Its Functional Surfaces
The selected aluminium route needs to suit the body walls, bosses and tool-release geometry. After casting and preparation, Relia's CNC scope establishes connector locations, fastener features and sealing or thermal-contact lands. The surface plan identifies masking where electrical contact or heat transfer depends on the exposed metal. Cleaning, dimensional inspection and any specified enclosure leakage check then follow the finished configuration. This connects the manufacturing sequence to the actual interfaces instead of assuming a coated shell already proves system performance.
- Map the assemblyConnectors, mounting, seals and thermal paths
- Form the aluminium bodyAlloy, wall transitions and reviewed casting route
- Machine and maskCritical interfaces and finishing boundaries
- Validate the componentFit and specified environmental/functional checks
04 · VALIDATION
Keep environmental checks tied to the assembly
- Finished component
- Select checks for locating features and sealing lands.
- Relevant configuration
- Define any assembly leakage or functional test basis.
Select dimensional checks for locating features and sealing lands, plus specified leakage or functional tests on the relevant configuration. The aluminium automotive reference lists ±0.02 mm and Ra3.2–6.3 fields; the project drawing must identify the surfaces and features to which limits apply.

05 · APPROVAL RECORDS
Agree the customer document package
Identify the material, dimensional, sample and customer-specific records your programme requires. Their contents and applicability should be reviewed with the enquiry rather than presumed from the application name.
06 · CHANGES
Control the move from prototype to repeat parts
- Accepted prototype
- Keep sample results linked to the drawing revision.
- Production change
- Review affected interfaces when tooling or route changes.
Keep the accepted sample and drawing revision linked. If material, tooling or route changes later, identify the interfaces and validation evidence affected before the next release.

07 · PURCHASING
Quote the accepted component package
Bring material, machining, finish and required records into one scope. Make open customer inputs visible so the quotation and approval package describe the same delivered housing.
Technical notes
Identify connectors, seals, mounting points and any thermal contact faces. Include vibration, temperature and exposure requirements supplied by the assembly design. A housing photograph cannot establish EMC performance, electrical isolation or an assembled ingress-protection rating.
| Package | Agreement |
|---|---|
| Geometry | Current component and interface drawing |
| Manufacture | Selected route and finished condition |
| Acceptance | Required records and customer review |
RELIA · YOUR NEXT PROJECT
Share the housing drawing and customer approval requirements
Send the model, selected alloy, quantities and mating-interface information. Add the required environmental and customer-document scope. We can review the manufacturing proposal against your programme requirements.
Start with these project details
- Housing model and interfaces
- Alloy, condition and quantities
- Environmental acceptance requirements
- Customer records and release scope
Shuyuan Road, Qingdao, Shandong, China