Casting appearance quality standard

Issuing time:2015-04-29 17:11

Serial number	Defect name	index
Serial number	Defect name	Top quality goods	First Grade	Qualified products
1	Bubble	○＜2mmN≤2	○＜2mm2＜N≤5	○＜2mmN＞5
2	Scratch	L≤5mmN≤2	5mm＜L≤40mm2＜N≤5	40mm≤LN＞5
3	Modular injury	L≤5mmN≤4	5mm≤L≤10mm4＜N≤7	10mm≤LN＞7
4	Magazines, sundries	0.5mm≤○≤2mmN≤4	0.5mm≤○≤2mm4＜N≤7	0.5mm≤○≤2mmN＞7
5	Water wrinkle	Notany	S≤200*200mmN＜2	S＞200*200mmN＞7
6	Uneven dispersion of color paste	Notany	Slight color difference and small area color paste precipitation are allowed	Severe chromatic aberration
7	Plate fracture	Notany	L≤200mm	L＞200mm
8	Bite plate	N≤3	3＜N≤5	N＞5
9	Surface residual silicon glass	Notany	Notany	Notany
10	Traces of alkalinity, water marks, mould spots and hemp spots on silica glass	Not any	S≤50*50mm	5050mm＜S≤200200mm
11	Silicon glass stripe	Notany	Notany	Notany

Supplementary notes:

1: The allowable range of surface area defects refers to each plate

2: The defects within 20 mm from the edge of the plate shall not be counted for the plate without cutting edge

3: The sum of the above defects allowed for class a sheet is not more than 3

4: Inspection method: the light is placed behind the plate, and the distance from the plate is about 60cm

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