Semi-finished Products_Zhengzhou Fasin Group

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Zhengzhou, Henan, China

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Zirconia Corundum Products (AZS) Semi-finished Products (Rough Blank) Inspection Internal Control Standard
Unit;mm
Size		Standard
Dim ensi onal Devi atio n	≤600	First Grade			Second Grade			Defective products			Reject
		Single-face Machined	Double-face Machined	Non- machin ed	Single-face Machined	Double- face Machined	Non- machin ed	Single-face Machined	Double-face Machined	Non- machin ed
		2~3	5~7	± 1	3~4	6~8	±2	>6<8	>10<12	±2	/
	601—1000	3~4	6~8	±2	>4；<7	6~8	±2	>6<8	>10<12	±2	/
	>1000	3~4	6~8	±2	>4；<7	6~8	±2	>6<8	>10<12	±2	/
	Diagonal	≤1			≤2			≤ 3			/
Fl at ne ss	Building Surface	Not allowed			Machined brick ≤3，Non-machined brick ≤2						/
	Non-building Surface	Not allowed			Machined brick ≤4						/
	Ordinary Casting Nozzle	Concavity/convexity≤5			Convex ≤5，concave ≤10			Convex ≤10，concave ≤15			/
	After Removal of Shrink-hole Casting Nozzle	Not allowed			Depth ≤5, area ≤10% of that face			Depth ≤10, area ≤15% of that face			/
Chipp ed Edges and Corne rs	Missing Corner	Not allowed			Working face ≥10, non- working face ≥20, ≤2 places			Working face ≥20, non- working face ≥30, ≤2 places			/
	Missing Edge	Not allowed			Depth ≥10, length ≤5% of edge length, allowed 2 places			Depth ≥10, length ≤10% of edge length, allowed 2 places			/
Cr ac ks	Cracks	Width ≤0.5mm, length ≤1/ 3 of the face, allowed 1 crack			Width ≤0.5mm, length ≤1/3 of the face, allowed 2 cracks			Width ≤1mm, length ≤1/3 of the face, allowed 2 cracks			/
	Network Crac	ks Not allowed			Allowed up to 30% of the face area			Allowed up to 50% of the face area			/
	Cross Cracks	Width ≤1mm; per face length ≥30mm, ≤1 place			Width ≤1mm; per face length ≥40mm, ≤2 places			Width ≤2mm; per face length ≥50mm, ≤2 places			/
	Cold Cracks	Not allowed			Not allowed in the middle of slag bricks; for other bricks, crack length ≤30% of the face, allowed one per whole brick			Not allowed in the middle of slag bricks; for other bricks, crack length <50% of the face , allowed one per whole brick			/
Bulk Density		- For 33# PT casting type products: ≥3.4 - For 33# WS casting type products: ≥3.7 - For 36# WS casting type products: ≥3.8 - For 41# WS casting type products: ≥3.9
Remarks
1. When the user has special requirements, implement according to agreement between supplier and buyer.
2. Comply with the "Product Inspection and Acceptance Procedure" standard. 3. Bulk density: every 0.05 below standard reduces one grade; below 0.10 is reject.