IPC-TM-650 EN 2022 试验方法.pdf - 第68页
1.0 Scope To visually locate, and by feel, evaluate surface scratches during visual inspection. If more exacting data is required for referee evaluations of microsectioning per IPC-TM-650, Method 2.1.1 shall be used. 2.0…
1.0
Scope
1.1
This method describes the procedure required to exam-
ine materials and/or finished product for workmanship, which
is the general quality of the goods other than as specified by
the applicable standard.
2.0
Applicable Documents
3.0 Test Specimens
3.1
Any
piece of a lot is subject to examination. Generally,
those specimens prepared for inspection and/or testing for
specific properties may be used to determine workmanship.
4.0
Apparatus or Material
4.1
Referee
optical device - 10X magnification.
5.0
Procedure
5.1 Evaluation
5.1.1
At
any stage of product handling, sample preparation,
or specimen conditioning, the product shall be under scrutiny
for detection of any defects, flaws, or unusual characteristics
other than those specifically called out in the applicable speci-
fication, using unaided or corrected 20/20 vision.
5.1.2 In
the case of a questionable evaluation with 20/20
vision, a referee inspection shall be made using the 10X mag-
nification.
5.2
Record and Report
5.2.1
Each
incidence of suspect flaw or defect shall be
noted and documented. The authorized quality function shall
determine whether the reliability, serviceability, or functionality
of the product may be affected.
5.2.2
Record
and report findings, including photographs of
defect, if deemed necessary.
6.0 Notes
None
The
Institute for Interconnecting and Packaging Electronic Circuits
2215 Sanders Road • Northbrook, IL 60062-6135
IPC-TM-650
TEST
METHODS MANUAL
Number
2.1.8
Subject
Workmanship
Date
12/94
Revision
B
Originating
Task Group
MIL-P-13949 Test Methods Task Group (7-11b)
Material
in this Test Methods Manual was voluntarily established by Technical Committees of the IPC. This material is advisory only
and its use or adaptation is entirely voluntary. IPC disclaims all liability of any kind as to the use, application, or adaptation of this
material. Users are also wholly responsible for protecting themselves against all claims or liabilities for patent infringement.
Equipment referenced is for the convenience of the user and does not imply endorsement by the IPC.
P
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1.0
Scope
To
visually locate, and by feel, evaluate surface
scratches during visual inspection.
If more exacting data is required for referee evaluations of
microsectioning per IPC-TM-650, Method 2.1.1 shall be used.
2.0
Applicable Documents
None.
3.0
Test Specimen
Any
qualified submitted sheet(s) or cut
to size panel(s) or periodic quality conformance specimens.
4.0
Apparatus
Dunlop
Tortex guitar pick 1.00 mm thick-
ness or equivalent.
5.0
Procedures
5.1 Test
5.1.1
Locate
scratches visually using normal or corrected
20/20 vision.
5.1.2
Scratches
which stop the pick when light pressure is
applied are unacceptable. Scratches which can be felt by the
pick but do not stop it are acceptable.
5.1.3
The
referee test shall be by microsection per IPC-TM-
650, Method 2.1.1.
5.2
Evaluation
5.2.1
Evaluate
in the ‘‘working area’’ of the sheet or panel.
Working area excludes a 1 in. border on all four edges.
Compare results with inspection represented in the appropri-
ate specification.
The
Institute for Interconnecting and Packaging Electronic Circuits
2215 Sanders Road • Northbrook, IL 60062-6135
IPC-TM-650
TEST
METHODS MANUAL
Number
2.1.9
Subject
Surface
Scratch Examination Metal-Clad Foil
Date
5/86
Revision
Originating Task Group
N/A
Material
in this Test Methods Manual was voluntarily established by Technical Committees of the IPC. This material is advisory only
and its use or adaptation is entirely voluntary. IPC disclaims all liability of any kind as to the use, application, or adaptation of this
material. Users are also wholly responsible for protecting themselves against all claims or liabilities for patent infringement.
Equipment referenced is for the convenience of the user and does not imply endorsement by the IPC.
P
age1of1
电子技术应用 ｗｗｗ．ＣｈｉｎａＡＥＴ．ｃｏｍ
1.0
Scope
This
inspection method is designed to visually
inspect for dicyandiamide, commonly called ‘‘dicy,’’ that is not
dissolved in the resin of prepreg materials in which it is used
as a curing agent, by means of polarized lighting.
2.0
Applicable Documents
None.
3.0
Test Specimens
Unless
otherwise specified, one ply of
prepreg cut to 101.6 x 101.6 mm [4.0 x 4.0 in].
4.0
Apparatus or Material
4.1
An
incidental light source such as a photographic light
box, light table or illuminated microscope base. Light intensity
shall be sufficient to detect small features of the specimen
under fully polarized conditions, such as a 60 watt light bulb
used in a light box.
4.2
A
matched pair of polarizing filter lens.
4.3
A
microscope capable of magnification at least 30X to
100X.
5.0
Procedure
5.1 Preparation
5.1.1
Place
one polarizing filter directly over the light source.
Place the specimen over the filter.
5.1.2
Place
second polarizing filter over the specimen
directly in line with the first filter.
5.1.3
Set
microscope to desired magnification between 30X
and 100X and position over the approximate center of the fil-
ters. For referee purposes, magnification shall be at 100X.
5.1.4
Focus
microscope on the specimen through the top
filter.
5.1.5
Rotate
top filter 90° from bottom filter (see Figure 1).
5.2
Evaluation
5.2.1
Examine
for the presence of dicy over the entire speci-
men, excluding the edges. The dicy (if present) will cause
scattering of the polarized light which can then pass through
the second filter in sufficient intensity to be visible.
5.2.2
Careful
scrutiny must be used to eliminate consider-
ation of dust or cracks in the resin as dicy, because they will
also diffuse polarized light. Severe incidence of undissolved
dicy may be observed using partially or non-polarized light.
5.3
Report
Presence
of dicy shall be noted as per the
degrees shown in Appendix A. Appearance as to the form,
i.e., crystal, flake, or cluster, shall be reported.
6.0
Notes
6.1
Dicy
is a curing agent used with epoxy resin; it is intro-
duced at the resin mixing stage. If the mix is not homoge-
neous or is improperly done, particles of dicy may not dissolve
or may be recrystallized. Dicy may also recrystallize during the
treating operation. During lamination of the prepreg, dicy may
contribute to the formation of voids or other defects.
6.2
Dicy Flake
A
loose mass of crystals, usually in the form
of crystals radiating from a center point.
6.3
Dicy Cluster
A
concentration of crystals or flakes.
Figure
1 Dicy inspection set-up (expanded view)
The
Institute for Interconnecting and Packaging Electronic Circuits
2215 Sanders Road • Northbrook, IL 60062-6135
IPC-TM-650
TEST
METHODS MANUAL
Number
2.1.10
Subject
Visual
Inspection for Undissolved Dicyandiamide
Date
12/94
Revision
A
Originating Task Group
MIL-P-13949 Test Methods Task Group (7-11b)
Material
in this Test Methods Manual was voluntarily established by Technical Committees of the IPC. This material is advisory only
and its use or adaptation is entirely voluntary. IPC disclaims all liability of any kind as to the use, application, or adaptation of this
material. Users are also wholly responsible for protecting themselves against all claims or liabilities for patent infringement.
Equipment referenced is for the convenience of the user and does not imply endorsement by the IPC.
P
age1of3
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