Complete Acceptance Checklist for CPC Counter‑pressure Casting Mold Pre‑delivery Inspection
Standardised pre‑delivery checklist avoids later on‑site dispute. It covers mold material, heat‑treatment, nitriding, cooling system, venting, gating assembly and document deliverables for LPDC, gravity and CPC counter‑pressure casting mold acceptance.
Mold material verification: check H13 / H13‑MOD steel material certificate; sample spectrograph test for key insert block; confirm no substitute‑material risk; record heat‑number of mold steel for EV structural‑part mold.
Heat‑treatment acceptance: quenching‑temper hardness test for insert body; hardness range 44‑48 HRC for aluminum casting mold; inspect for surface decarburization; heat‑treatment report shall be provided for CPC counter‑pressure casting mold batches.
Nitriding layer metallographic acceptance: verify total nitriding depth 0.12‑0.20 mm; compound‑layer thickness 5‑12 μm; no discontinuous nitriding zone; deliver nitriding treatment report and metallographic photo for gravity casting mold.
Cooling‑circuit inspection: channel position, diameter and distance to cavity surface conform drawing requirement; pressure‑tightness water‑pressure test; no leakage; check coolant inlet‑outlet marking clear for LPDC casting mold.
Venting‑system check: vent‑slot clearance measured (0.08‑0.12 mm); replaceable vent‑insert installed as design; no blockage; confirm total vent cross‑section area matches simulation design value for aluminum casting mold.
Gating‑runner‑gate dimensional inspection: runner cross‑section, gate thickness and position comply with drawing; smooth transition, no sharp corner; CMM key dimension measurement report provided for EV structural‑part mold.
Assembly‑system acceptance: bolt grade confirmation; mating‑surface flatness inspection; check thread hole clean‑up; mark target torque value for each bolt position; inspect positioning‑pin fitting condition for CPC counter‑pressure casting mold.
Surface status inspection: cavity polishing quality; no machining‑tool‑mark, scratch, grinding‑burn; corner fillet radius fully implemented according drawing; check no over‑polishing which thins nitriding‑layer for gravity casting mold.
Simulation deliverables audit: obtain original Procast/Magma project file; review filling‑solidification‑stress simulation report; compare simulation critical dimension with physical mold real structure for LPDC casting mold project.
Document deliverable checklist: material certificate, heat‑treatment report, nitriding report, CMM dimension report, assembly‑torque specification, maintenance manual, spare‑parts list for aluminum casting mold pre‑delivery.
Cold‑test limitation statement: pre‑delivery acceptance is cold‑state inspection. It cannot fully verify thermal‑deformation, thermal‑balance behaviour and long‑term wear performance; these items need validation after customer on‑site hot trial for EV structural‑part mold.
Cross‑border delivery reminder: all acceptance documents provide bilingual version. Clearly mark cold‑acceptance scope; avoid customer expecting full mass‑production‑level quality just based on factory cold‑state mold inspection.
FAQ
Q: What target bulk hardness range for H13 mold insert after quenching‑tempering?
A: Insert body hardness shall be controlled within 44‑48 HRC.
Q: What key metallographic indexes are required for nitriding‑layer pre‑delivery acceptance?
A: Total nitriding depth 0.12‑0.20 mm; compound‑layer thickness 5‑12 μm.
Q: What test shall be performed for mold internal cooling‑circuit before delivery?
A: Water‑pressure tightness test to confirm no leakage of cooling channels.
Q: Why cold‑state pre‑delivery inspection cannot replace customer on‑site hot trial validation?
A: Cold inspection cannot evaluate thermal‑deformation, thermal‑balance and long‑term wear performance.
Q: What simulation‑related deliverable shall be required besides static simulation report?
A: Original editable Procast / Magma simulation project file.
Q: What assembly acceptance item needs clear marking for each bolt position on CPC mold?
A: Target assembly pre‑torque value for each clamping bolt location.
Q: What document preparation suggestion for cross‑border mold pre‑delivery acceptance?
A: Deliver full set of bilingual acceptance documents and spare‑parts list together with mold.
