POST-PROCESS CONTROL
Secondary Operations
Coordinate the operations required after casting, forging or primary machining so critical interfaces, material condition, appearance and final acceptance are controlled as one project scope.
Project image to be added
SERVICE OVERVIEW
Connect the service scope to the finished-part requirement.
A near-net-shape part may still require machining, deburring, heat treatment, grinding, joining or assembly before it meets the finished drawing. These operations can change dimensions, surface condition, mechanical properties and inspection results.
The secondary route should therefore be reviewed with the primary process. Critical datums, machining allowance, heat-treatment sequence, masking, handling and final inspection points are identified before quotation. Operations completed by approved external specialists remain part of the project scope only when they are explicitly included and controlled.
CUSTOMER INPUTS
Information required for an actionable review.
Incomplete requirements can change the quotation, process route and inspection scope. These inputs help identify open items before production planning.
Finished-part drawing
Critical dimensions, datums, threads, surface requirements and drawing revision.
Incoming part condition
Casting, forging, billet or partially machined condition and available machining allowance.
Material and heat-treatment state
Grade, delivery condition, hardness or mechanical-property requirements where applicable.
Functional and assembly requirements
Mating interfaces, sealing surfaces, fit, torque, cleanliness or assembly expectations.
Inspection and documentation scope
Characteristics, sampling, tests and records required after secondary processing.
SERVICE SCOPE
Available work is confirmed by project, not by a generic checklist.
The execution route may combine Tianluping operations and controlled specialist suppliers. The quotation defines what is included.
CNC finishing
Turning, milling and finishing of drawing-defined datums, bores, faces, sealing interfaces and other critical features.
Project-definedDrilling, tapping and reaming
Produce holes and threads with tool access, depth, burr control and gauging requirements reviewed from the drawing.
Project-definedDeburring and edge finishing
Remove process burrs and define edge condition without damaging critical geometry or functional surfaces.
Project-definedGrinding and localized finishing
Apply project-specific finishing where geometry, fit or surface condition requires an additional controlled operation.
Project-definedHeat treatment
Coordinate the specified condition and consider distortion, hardness, machining sequence and required verification.
Supplier-managedAssembly and functional preparation
Support agreed inserts, sub-assembly, cleaning or packaging steps when drawings and acceptance criteria are defined.
Project-definedPROJECT WORKFLOW
Review, approve and control the service route.
The exact milestones depend on the project, but responsibility and acceptance should be visible before production begins.
Route review
Review the finished drawing, incoming condition and operations that can affect datums, material properties or acceptance.
OutputProposed operation sequenceProcess and fixture planning
Define setups, references, machining allowance, protection and any specialist supplier requirements.
OutputControlled processing basisTrial or first-off processing
Evaluate the operation sequence and inspect the features that establish later processing or assembly.
OutputFirst-off result and open itemsProduction processing
Run the agreed secondary route with applicable identification, handling and process controls.
OutputProcessed production partsFinal verification
Inspect the finished condition and compile the records included in the project quality scope.
OutputReleased finished parts and recordsDELIVERABLES & RESPONSIBILITY
Agree what will be supplied and what evidence is required.
Deliverables are project-specific and should be included in the quotation, approval plan or quality agreement.
PROJECT QUESTIONS
Questions to clarify before quotation.
Can secondary operations be included in one quotation?
They can be included when the finished drawing, required sequence, specification and inspection scope are available for review. The quotation should identify included and excluded operations.
Which operations are completed in-house?
The execution route depends on the operation and project. The quotation should identify confirmed in-house work and any controlled external specialist process rather than assuming every listed operation is internal.
Why must heat treatment be reviewed before machining?
Heat treatment can change hardness, machinability and dimensions. Its sequence may affect machining allowance, distortion control and final inspection.
What drawing information is most important?
Finished datums, critical dimensions, threads, surface requirements, material condition and the acceptance basis should be clearly identified.
ENGINEERING REVIEW
Define the complete scope before quotation.
Share the drawing, material, quantity, application and required records. The team can review the manufacturing and supporting-service route together.