Painting of Metallic Decorative Add-on Parts for the Exterior Requirements
Previous issues
TL 52451: 1996-06, 1998-07, 2003-05Changes
The following changes have been made as compared to TL 52451: 2003-05:–Table 2, No. 3 "Salt spray test" removed
物理考试反思
–Table 2, No. 3.2 "Condend water test", requirement expanded –Table 2, No. 8.1 "Scratch resistance", requirement changed –Standard restructured
–Referenced documents updated –Table in Section A.1 expanded Scope
This standard applies to paintwork on exterior add-on parts with metallic substrate that are in the visible area and thus must fulfill predominantly decorative and functional requirements, e.g., roof rails,wiper arms, pillar trim.Description
Paintwork according to TL 52451, with additional specification of the surface protection according to Volkswagen Standard VW 13750, if required.Example 1:Paintwork acc. to TL 52451
Structure according to Ofl-x630 (cathodic electrocoat) + powder top coat Example 2:
Paintwork acc. to TL 52451
Structure according to Ofl-x632 (cathodic electrocoat) + powder top coat
1
2
Group Standard
经期可以吃香蕉TL 52451
Issue 2008-08
Class. No.:50242
女子spa会所Descriptors:
paint, paintwork, surface protection, multicoat paint, metal part, decorative, top coat, wiper arm, roof rails,pillar trim
砌体施工方案
Check standard for current issue prior to usage.
This electronically generated standard is authentic and valid without signature.
The English translation is believed to be accurate. In ca of discrepancies the German version shall govern.Numerical notation acc. to ISO practice.
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Technical responsibility Standards department GQL-LP/2Marina Engelking Tel.: +49-5361-9-41793GQL-LM/2Dr. Olaf Claus Tel.: +49-5361-9-194081
GQL-L
Dr. Stephan Einberg
EKTC/4 Jürgen Wiesner EKTC
Tel.: +49-5361-9-29064
Manfred Terlinden
Confidential. All rights rerved. No part of this document may be transmitted or reproduced without prior permission of a Standards Department of the Volkswagen Group.Parties to a contract can only obtain this standard via the B2B supplier platform "".
© VOLKSWAGEN AG
VWNORM-2007-10f
Requirements General requirements
Approval of first supply and changes according to VW 01155.Avoidance of hazardous substances according to VW 91101.A minimum of 10 finished parts are required for complete testing.
The supplier must enclo the information according to Section A.1 and the first-sample or develop‐ment-sample test report with all parts to be tested.多肉植物多久浇一次水
All areas on the part for which the following requirements do not apply must be marked in the drawing.Deviating requirements must be specified.
The coating must not be damaged during professional installation.Appearance
The parts must exhibit a uniform appearance over their entire surface and conform to the drawing requirements, the color standard, as well as the visual properties according to Table 2. Pores, cracks,and other flaws that adverly affect the specified appearance are not permissible. Deviations from this must be specified in the drawing.
Degree of glossiness, color, and structure are to be documented in the first-sample or development-sample test report.Open-Air Weathering
All painted components are tested according to VW 50185 (2 years in humid heat and 2 years in dry heat). The supplier is obligated to remove the cau for complaints occurring during this test and to improve the paint system.Paint process
The paint process must be coordinated between the paint shop and paint manufacturer. Both parties confirm the first-sample test report, meaning that both are responsible for fulfilling the specified re‐qu
irements. Responsibilities are broken down as follows:–The paint manufacturer provides information on the fulfillment of requirements in the Technical Supply Specification, processing guidelines, and support regarding the applied paint method.–
The paint shop provides information on the substrate and pretreatment steps, checks the re‐quirements at the earliest possible juncture, confirms compliance with the paint manufacturer’s processing guidelines, and requests support regarding the applied paint method.
The blank manufacturer must provide information regarding the ba material (substrate, pretreat‐ment, paint coats already applied) and ensure its suitability for further paintwork.Paint structure/coat thickness
The coat thickness specified in Table 1 (measurement according to DIN EN ISO 1463) only apply if additional coats are ud for the requirement according to VW 13750 or if there is no reference to a surface according to VW 13750. The specified coat materials must be adhered to in any event.The total paint coat thickness must not exceed 110 µm in a pure liquid paint structure.
In a structure containing powder paint, a total paint coat thickness of 150 µm must not be exceeded.
3 3.1
3.2
3.3
3.4
3.5
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友谊最暖心短句TL 52451: 2008-08
Repainting is only possible if the same color is ud. The total paint coat thickness in the event of repainting is limited to a maximum of 160 µm for the pure liquid paint structure and 200 µm for the powder paint structure. The requirements of TL 52451 must also be fulfilled by means of a reliable process during repainting.
The paint structure must consist of either:
A primer coat (1) and a single-layer top coat (2) according to Table 1
Or
A primer coat (1) and a dual-layer top coat (3) according to Table 1
In exceptional cas (e.g., powder top coat on pretreated aluminum substrates), a top coat structure only (according to Table 1 (1) or (2)) can also be chon; however, this must be expressly stipulated in the drawing.
Table 1 – Paint coat thickness表格乘法怎么操作
Coat Coat material Standard
value
Coat thick‐
ness
(μm)
1.Primer coat a Cathodic electrocoat17 to 22
b Heavy coat cathodi
c dip paint25 to 35
c Liqui
d paint filler (binder bas
e as desired)25 to 35
d Powder filler (binder bad on epoxy resin or
polyester resin)
50 to 80
2.1-layer top coat a Powder top coat (polyester resin or acrylate resin
ba for matte paints, acrylate resin ba for high-
gloss paints)
50 to 100
b Top coat (liquid paint, binder ba: polyester, poly‐
acrylate, polyurethane)
20 to 40
3.2-layer top
coat
Color‐
ing
coat
a
Ba coat (liquid paint, binder: CAB, acrylate,
melamine, polyester systems)10 to 20
大学生党员Clear
coat
b Clear coat (liquid paint, binder: acrylate, polyester)30 to 50
c Powder clear coat (acrylate resin-ba
d binder; with
u of powders with a polyester resin ba, additional
protection in the form of a further liquid clear coat
layer is required)
50 to 100
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TL 52451: 2008-08
Technological requirements
See Table 2.
The parts must be one week old for the technological tests, or they must be aged before the tests for 24 h at +60 °C. Aging and conditioning: 24 h in the DIN 50014 – 23/50-2 standard climate. Deviations from this must be noted in the test report.
Table 2
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TL 52451: 2008-08
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