E-mold Acceptance Specification for Plastic parts

Feb 29,2020 | Views: 2253

Below specification defines E-mold acceptance criteria of cosmetic inspection.

Classification on product surfaces.

Class 1 Surface: Visible "ofter" by user.

Class 2 Surface: Visible occasionlly or likely to be seen by user.

Class 3 Surface: Normally not visible or only visible during installation.

1. Acceptance Specification for Plastic parts

	Defect	Class 1	Class 2	Class 3
1001	Sink	2 @ 0.05 mm deep , 1.25 mm dia	4 @ 0.10 mm deep , 1.25 mm dia	Per Limit Sample
1002	Bubbles,specks,nicks,black spots	2 @ 0.50mm dia	2 @ 0.50mm dia	Per Limit Sample
1003	Scratches	1 @2.5mm long per 10cm, and no more than 2 in one class	1 @2.5mm long per 10cm, and no more than 2 in one class	Per Limit Sample
1004	Abrasions	Only surface imperfections that do not change the surface color (less than 1.50 mm, with a min. spacing of 304 mm), or per limit sample.
1005	Splay, Burns, Gas Marks, Marbling, Orange peel, Nonuni- form texture, Pitting, Cracking, De-lamination, Cold Slugs, Short Shots, discoloration, shine, or change in gloss	None	Per Limit Sample	Per Limit Sample
1006	Surface dirty	None	＜2.5mm size , 2 place max within 150mm round area	＜2.5mm size , 2 place max within 150mm round area
1007	Short shot	None	None	None

2. Acceptance Specification for Die casting parts

	Defect	Class 1	Class 2	Class 3
2001	Scratches/ Abrasions	<3.2 mm length	< 12.7 mm length, 0.25mm width @ 25.4mm dia area	Scratch: <20.3 mm length, 12.7mm width, 0.25mm depth. < 6 scratches Abrasion: < 25.4 mm dia or 3 abrasions@ 152mm dia circle area
2002	Dents/ Slug Marks	<1.5 mm dia “and”<0.154 mm depth	<12.7 mm dia “and” <0.5 mm depth less than 1 mark within 220mm dia area	<19mm dia “and” depth <0.5 mm Less than 1 within 200 mm dia circle area
2003	Water Spots	Not Allowed	@ 150mm dia area： Max 5 spots, 3mm dia or 2 spot 3~6.3mm dia or 1 spot 12.7mm dia	< 75% of surface area
2004	Finishes	Per drawing or standard manufacturing specifications		White rust is not acceptable
2005	Burr	Less than 0.2mm
2006	Rust	Not Allowed
2007	Surface dirty	None	＜2.5mm size , 2 place max within 150mm round area	＜2.5mm size , 2 place max within 150mm round area

3. Painted or Coated parts

	Defect	Class 1	Class 2	Class 3
3001	Color Match	Per Limit Sample
3002	Coverage	Complete, no substrate or undercoat showing
3003	Runs	None
3004	Orange Peel, Nonuniform texture, Inconsistent Gloss	Only surface imperfections that do not change the surface color or exceed an area of a 1” dia (25.4 mm dia) circle. No more than one occurrence per surface.
3005	Bubble, Specs	2 @ 0.25mm dia		4 @ 0.25mm dia
3006	Contamination	1 @0.25 mm dia per 10cm,and no more than 2 in one class	1 @0.50 mm dia per 10cm,and no more than 2 in one class	2 @0.50 mm dia per 10cm,and no more than 4 in one class
3007	Scratches, Contamination, Nicks, Pitting, Dent, Cracking, Delamination	1 @2.5mm long per 10cm, and no more than 2 in one class		2 @2.5mm long per 10cm, and no more than 4 in one class
3008	Abrasion	Only surface imperfections that do not change the surface color (less than 1.5mm)

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