Review the released basis
Check current drawings, bill of materials, procedures and acceptance criteria before work.
Inspection evidence from material to release
Disc Filter Manufacturing Quality Control
See how BOYUN controls incoming materials, welding, machining, assembly, coating, functional checks and final inspection for each disc filter project.
Approved documentsControl basis
Incoming to finalStages
Recorded inspectionEvidence
Project requirementsRelease
Quality planningInputs Execution Release
Convert Contract Requirements into Inspection Points
Quality control begins with the approved drawings, specifications, applicable standards, inspection and test plan, document schedule and agreed customer witness points.
Record inspection at the source
Use identified equipment, traceable forms and responsible sign-off at defined stages.
Close nonconformities
Resolve deviations and compile the agreed dossier before shipment authorization.
Manufacturing stages
Typical Control Points for a Disc Filter Project
The exact inspection plan depends on contract, equipment configuration and applicable standards.
| Stage | Examples of checks | Evidence to agree |
|---|---|---|
| Incoming material | Identity, dimensions, condition and specified supplier documents. | Receiving record, certificates or traceability record. |
| Fabrication and welding | Fit-up, dimensions, weld procedure and visual or specified examination. | Process records and inspection reports. |
| Machining | Shaft, sealing faces, bores, fits, runout and surface requirements. | Dimensional report and measuring-equipment identification. |
| Assembly | Orientation, fastening, lubrication, clearance, rotation and interfaces. | Assembly checklist and punch list. |
| Coating | Surface preparation, environmental conditions, system and thickness where specified. | Coating report and repair record. |
| Final release | Configuration, functional checks, marking, packing and document status. | Final inspection and release dossier. |
Hold-point logic1 2 3 4 5
Stop, Verify and Release the Next Stage
A recorded hold point protects features that cannot be fully inspected after assembly or coating.
Plan
Approve criteria, forms and witness points.
Inspect inputs
Verify materials and released documents.
Control process
Check fabrication, machining and assembly stages.
Resolve findings
Record disposition, repair and re-inspection.
Release
Verify equipment, packing and dossier status.
Buyer review
Request Evidence Relevant to the Contract
Avoid asking for a generic certificate pack. Identify the records and witness access needed for the actual project.
Inspection and test planStages, characteristics, responsibilities and hold/witness points.
Drawing registerApproved revision status used for manufacture and inspection.
Material recordsSpecified traceability and supplier documentation.
Inspection reportsDimensions, examinations, functional checks and coating records.
Nonconformity controlDisposition, repair approval and re-inspection evidence.
Final dossierAgreed index, language, format and submission timing.
Continue the project path
Connect Quality to the Project Lifecycle
Review qualifications, manufacturing and commissioning evidence together.
Practical answers
Frequently Asked Questions
These answers support project preparation; the final recommendation depends on the actual duty.
Why is representative slurry data required?
Mineral names do not define filterability. Particle-size distribution, mineralogy, clay, reagents, solids and temperature can change cake formation, permeability and release. Use filterability testing when results matter commercially.
What should be sent for a preliminary review?
Provide dry-solids throughput, feed solids, particle-size data, target cake moisture, operating schedule, elevation and available utilities through the quote request.
Can BOYUN promise cake moisture from the mineral name alone?
No. A defensible target must be tied to representative feed data, test conditions, equipment scope and an agreed operating basis.
Define the Next Engineering Step
Share the feed, throughput, operating target and site constraints. BOYUN will identify missing information and recommend testing, sizing or the appropriate equipment scope.