发簪教程Cosmetic Inspection
Standard for Metals
Contents Page
1 Purpo 2
2
2 Scope
2
3 Definitions
2
4 Work
Instructions
5 Cosmetic Specification- Maximum Part Size 36” x 36” x 36” 2
5.x Table 1: Viewing Time and Distances for Parts
Smaller than 36”x36”x36” 3
5.x Table 2: Cosmetic Reference Standard for Parts
石牙Smaller than 36”x36”x36” 3
6.0 Cosmetic Specification- Part Size Greater than 36” x 36” x 36” 4
6.x Table 3: Viewing Time and Distances for Parts
Larger than 36”x36”x36” 4
6.x Table 4: Cosmetic Reference Standard for Parts
Larger than 36”x36”x36” 5
5
Callout
Burr
7.0
Callout
5
Timesaving
and
Graining
8.0
and
Callout 5 Plating
Processing
9.0
9.x Table 5: Plating Specifications 6
1.0 PURPOSE
To establish and communicate a standardized method of inspecting sheet metal parts for cosmetic issues in a uniform and subjective way.
2.0 SCOPE
This procedure shall be ud to inspect all sheet metal parts, unless given
different specifications by the customer.
3.0 DEFINITIONS
3.1.1 Glossiness- (Refers to paint application only.) An area of excessive or
gloss.
deficient
3.1.2 Discoloration- (Refers to paint application only.) Any change from
original color or unintended inconsistent color.
3.1.3 Lint- (Refers to paint application only.) Any unintended foreign
substance in the coating or on the surface.
3.1.4 Tool Marks- marks that are made directly from the punching or
condary operations.
3.1.5 Blisters- (Refers to paint application only.) Non-adhesion. Lack of
proper sticking of the coating to the surface.离开的句子说说心情
简便运算五年级
3.1.6 Non-uniform coverage- (Refers to paint application only.) Areas that
have an insufficient (bare spots) or excessive coating.
3.1.7 Runs- (Refers to paint application only.) Excessive coating that
caus drips or non-uniform coverage.
3.1.8 Scratches- Grooves or grinding marks.
3.1.9 Specks- Small particles.
3.1.10 Burrs- Raid, sharp edges inherent in cutting operations such as
shearing, blanking, punching and drilling.
4.0 WORK INSTRUCTIONS
4.1 At time of RFQ, the Sales Engineer and customer will review the product
and determine surface classification (e ctions 5.0 and 6.0 for more
information on part classification). The Sales Engineer will nd a copy of
the Cosmetic Inspection Standard for Metals to the customer to define
proper cosmetic classifications.
4.2 After the surfaces have been reviewed and agreed upon with the
customer, the internal controlled Mack prints will note the corresponding
surface classification.
4.3 During the fabrication of product, per Work Instruction Form 10, auditor
will verify that product conforms to this specification.
周知的意思海葵能吃吗4.4 If product does not conform to this specification, defect will be
documented on the Inspection History Form and Quality will determine
part disposition.
5.0 MAXIMUM PART SIZE 36”x36”x36” COSMETIC SPECIFICATION
CLASSIFICATION
5.1 General- For components or asmblies smaller than 36” x 36” x 36”,
cosmetic inspection shall u the Time and Distance Inspection procedure
described below (Table 1) and shall rely on the judgement of trained auditor and suppliers. If flaws are noticeable within this specification, refer to the Cosmetic Reference Standard (Table 2). This added specification will assist our trained auditor in making an accept/ reject decision. If the product does not conform to this specification, product will be placed on hold.
5.2 Viewing Conditions- Parts and products shall be inspected under the
following conditions.
5.2.1 Uniform, non-directional illumination between 80 and 120 foot-
candles. At levels greater than 120 foot-candles, caution should
be ud to not over-inspect.
5.2.2 Viewing angle should be between 60 and 90 degrees in direction
to the parts.
5.2.3 Parts shall not be manipulated to reflect a single light source in
order to accentuate surface flaws. View without directly reflecting
a light source.
5.3 Cosmetic Class Codes- The cosmetic class codes ud in this Standard
u Roman Numerals “I” through “III”. Class “I” is rerved for mirrored or optical surfaces. Class “II” is generally specified for front panels or exterior surfaces of an asmbly. Class “III” is generally specified for interior frames and asmbly. To refine the cosmetic class further, a suffix letter “A”
through “D” is appended. Class “IIA” would indicate a very critical surface, where “IIC” might be ud to indicate an important surface, but less so than “IIA”. The lowest cosmetic designation would be a “IIID”, which normally is not inspected for cosmetic attributes.
5.4 Application- “External” applications include front panels, covers, and
frames that are readily visible in the final asmbly. “Internal” components are generally en only by asmbly and technical personnel and are less
important cosmetically. Some components, such as the inside of a door, may have both an internal and external application. This will be our default code unless directed otherwi by the customer.
5.5 Time and Distance Inspection- “Viewing Time” indicates the duration of the
obrvation. The more critical the cosmetic surface, the longer the inspection period. “Viewing Distance” indicates how far the inspector will be from the parts. The more critical the surface, the clor the inspector will be to the
parts. Parts will be inspected in accordance with instructions on the part
drawing, if available. If the drawing references this specification, the codes will reference Table 1, “Viewing Time and Distances.” On drawings
referencing this specification, surfaces not cosmetically coded shall be
considered IIIC.
The time and distance specification refers to a 1 square foot surface(s). If part is larger than 1 foot, the auditor will increa viewing time in proportion to part size.
Table 1: Viewing Time and Distances for Parts Smaller than 36”x36”x36”
Cosmetic Class I IIA IIB IIIC
IIID
Application Optical/
Mirrored
External Both Internal Structural
Viewing
Distance
8” 16” (400 mm) 18” (460 mm) 24” (610 mm) N/A
霍集占
Viewing Time20 Seconds 10 Seconds 5 Seconds 3 Seconds N/A
5.6 Accept/ Reject- When flaws are obrved within the specified time and
distance and the accept/ reject decision is difficult to make, refer to Table 2,
“Cosmetic Reference Standard.” From this table, you will note that parts are
often cosmetically acceptable even though small flaws are noticed, as long as
they stay within the specification.
Table 2: Cosmetic Reference Standard for Parts Smaller than 36”x36”x36”
Cosmetic Class I IIA IIB/IIC
IIIB
IIIC
Specs & Discoloration None TWO
.
02”
DIAMETER
FOUR .06” DIA SIX .13” DIA SEE NOTE 1
Scratches & Lint None TWO .01 X .03 FOUR .02” BY
.09”
FOUR .02” BY
.25”
SEE NOTE 1
Runs None None TWO .06” DIA FOUR .13 DIA SEE NOTE 1 Blisters & bare
spots
None None TWO .09” DIA FOUR .13 DIA SEE NOTE 1 Tool Marks Not Acceptable Not Acceptable OK OK OK
Burrs Less than 10%
of material
thickness,
unless noted on
print Less than 10%
of material
西葫芦的做法thickness,
unless noted on
print.
Less than 10%
of material
thickness,
unless noted on
print.
Less than 10%
of material
thickness,
unless noted on
print.
Less than 10%
of material
thickness,
unless noted on
print.
Note 1: As shown in table 2, if a part surface is coded IIIC, flaws exceeding tho allowed under IIIB are permitted; however, when viewed at the specified time and distance, the flaws must not be so obvious as to suggest inferior workmanship or processing.
6.0 LARGE COMPONENT OR ASSY COSMETIC SPECIFICATION CLASSIFICATION
6.1 General- For components or asmblies larger than 36” x 36” x 36”, cosmetic
inspection shall u the Time and Distance Inspection procedure described
below (Table 3) and shall rely on the judgement of trained auditor and suppliers.
If flaws are noticeable within this specification, refer to the Cosmetic Reference
Standard (Table 4). This added specification will assist our trained auditor in
making an accept/ reject decision. If the product does not conform to this
specification, product will be placed on hold.
6.2 Viewing Conditions- Parts and products shall be inspected under the
following conditions.
6.2.1 Uniform, non-directional illumination between 80 and 120 foot-
candles. At levels greater than 120 foot-candles caution should be
ud to not over-inspect.
6.2.2 Viewing angle should be between 60 and 90 degrees in direction
to the parts.
6.2.3 Parts shall not be manipulated to reflect a single light source in
order to accentuate surface flaws. View without directly reflecting
a light source.
6.3 Cosmetic Class Codes- The cosmetic class codes ud in this Standard
u Roman Numerals “I” through “IIII”. Class “I” is generally specified for
front panels or exterior surfaces of an asmbly. Class “II” is specified for
internal and external components. Class “III” is generally specified for interior
frames and asmbly. Class ”IIII” is specified for structural components,
where cosmetics classifications are less required than a class “III”.
6.4 Application- “External” applications include front panels, covers, and
frames that are readily visible in the final asmbly. “Internal” components are
generally en only by asmbly and technical personnel and are less
important cosmetically. Some components, such as the inside of a door, may
have both an internal and external application. This will be our default code
unless directed otherwi by the customer.
6.5 Time and Distance Inspection- “Viewing Time” indicates the duration of the
obrvation. The more critical the cosmetic surface, the longer the inspection
period. “Viewing Distance” indicates how far the inspector will be from the
parts. The more critical the surface, the clor the inspector will be to the
parts. Parts will be inspected in accordance with instructions on the part
drawing, if available. If the drawing references this specification, the codes
will reference Table 3, “Viewing Time and Distances.” On drawings
referencing this specification, surfaces not cosmetically coded shall be
considered III.
Table 3: Viewing Time and Distances for Parts Larger than 36”x36”x36”
I II III IIII Cosmetic
Class
Application External Both Internal Structural
36” (400 mm) 48” (460 mm) 48” (610 mm) N/A
Viewing
Distance
Viewing Time10 Seconds 5 Seconds 3 Seconds N/A
6.6 Accept/ Reject- When flaws are obrved within the specified time and
distance and the accept/ reject decision is difficult to make, refer to Table 4
“Cosmetic Reference Standard.” From this table, you will note that parts are
often cosmetically acceptable even though small flaws are noticed, as long as
they stay within the specification.
