德国大众表面处理标准VW13750

Klass.-Nr. 50 20 0; 02 64 2 February 2005 Surface Protection of Metal Parts Surface Protection Types, Codes VW 137 50 Konzernnorm Descriptors: corrosion, rust protection, surface protection, metal, protection type, code, corrosion protection Page 1 of 23 Fachverantwortung/Responsibility Normung/Standards (EZTD, 1733) K-QS-32/2 Koeppen Tel:-25803 Laudien Dr. Eisenberg Wiesner Tel: +49-5361-9-29064 Sobanski Confidential. All rights reserved. No part of this document may be transmitted or reproduced without permission of a Standards Department of the Volkswagen Group. Parties to a contract can only obtain this standard via the B2B supplier platform “www.vwgroupsuppy.com”.  VOLKSWAGEN AG N o rm v o r A n w en du n g au f A kt u al itä t p rü fe n / C he ck st an da rd fo r cu rr en t i ss u e pr io r to u sa ge . Fo rm FE 41 - 01 . 05 Contents Page 1 Scope .................................................................................................................................. 2 2 Description .......................................................................................................................... 3 2.1 Code structure..................................................................................................................... 3 2.2 Example of description........................................................................................................ 3 3 Requirements...................................................................................................................... 3 3.1 General requirements ......................................................................................................... 3 3.2 Drawing specifications ........................................................................................................ 4 3.3 Weldability........................................................................................................................... 4 3.4 Agents impairing wetting ability ........................................................................................... 4 3.5 Friction behavior.................................................................................................................. 5 3.6 Zinc coatings ....................................................................................................................... 5 3.7 Screws, nuts, threaded parts and shaped parts.................................................................. 5 3.8 Commercial surface protection types.................................................................................. 5 3.9 Parts without surface protection.......................................................................................... 6 3.9.1 Joining elements ................................................................................................................. 6 3.9.2 Other parts (e.g. sheets) ..................................................................................................... 6 3.10 Assignment of surface protection types and codes............................................................. 6 4 Referenced standards....................................................................................................... 12 A.1 Comparison of “not for new design”/“for new design” ....................................................... 14 A.2 Surface protection types without code .............................................................................. 15 A.3 Surface protection types according to VDA test sheet 235-104 and VW 137 50.............. 15 A.4 Invalid Ofl descriptions ...................................................................................................... 16 Changes The following changes have been made as compared to Volkswagen standard VW 137 50, 1999-04: � Surface protection type “phosphated, passivated” (code b101) stipulated. � Surface protection type “phosphated, silver gray (for internal applications)” (code b111) stipulated. � Surface protection type “phosphated, yellow glazing, for internal applications (water-based paint)” (code b112) stipulated. � Surface protection type “manganese phosphated” (code b130) restricted in terms of the possible applications (no longer permitted for new design of joining elements, replacement is b140). � Cr(VI)-free surface protection types “electrolytically zinc-coated” (codes c341, c641, c342, c642, c343, c643, c347, c647, c696 and c697) added. � Cr(VI)-containing surface protection types “electrolytically zinc-coated” (codes c350, c650, c351, c651, c355, c360, c660, c683, c385, c685) restricted in terms of the possible applications (no longer permitted for new designs, for replacement see Table A.1). Th e En gl is h tra n sl a tio n is be lie ve d to be a cc u ra te . In ca se o f d is cr e pa n ci e s th e G e rm a n ve rs io n sh a ll go ve rn . jus Page 2 VW 137 50: 2005-02 � Surface protection type “bright chrome-plated, with microcracks” (code f320) removed (replaced by Ofl-f350). � Layer thicknesses for surface protection types “tin-coated” (code g...) stipulated. � Surface protection types for electrolytically deposited Al and Al/Mg alloy coatings (codes q600, q605, q610, q615) added. � Cr(VI)-containing surface protection types “Zn/Fe alloy coated” (codes r600, r605, r610, r620 and r630) restricted in terms of the possible applications (no longer permitted for new designs, for replacement see Table A.1). � Cr(VI)-free surface protection types “Zn/Fe alloy coated” (codes r301 and r302) added. � Surface protection types “Zn/Ni alloy coated” (codes r640, r650, r660, r665, r670, r675) restricted in terms of the possible applications (no longer permitted for new designs, for replacement see Table A.1). � Cr(VI)-free surface protection types “Zn/Ni alloy coated” (codes r642, r643, r649, r672, r673 and r677) added. � Cr(VI)-free surface protection types “duplex coated” (codes s611, s617, s621 and s627) added. � Cr(VI)-containing surface protection types “duplex coated” (codes s610, s615, s620 and s625) restricted in terms of the possible applications (no longer permitted for new designs, for replacement see Table A.1). � Surface protection types “zinc flake coatings” (codes t300, t310, t320, t345, t600, t620 and t645) restricted in terms of the possible applications (no longer permitted for new designs, for replacement see Table A.1). � Cr(VI)-free surface protection types “zinc flake coatings” (codes t602, t611, t615 and t647) added. � Surface protection type “black finished” (code u110) re-included. � Cr(VI)-containing surface protection type “chromated” (code v110) restricted in terms of the possible applications (no longer permitted for new designs, replaced by Ofl-v111). � Cr(VI)-free surface protection type “Cr(VI)-free passivated” (code v111) added. � Surface protection type “anodized” (code w650) removed. � Surface protection types “coil-anodized” (codes w660 and w670) restricted in terms of the possible applications (no longer permitted for new designs). � Surface protection types “anodized” (codes w180, w680, w690, w695) added. � Surface protection type “multi-layer coated, medium protection” (code x310) removed. � Surface protection types “multi-layer coated, heavy protection” (codes x611, x612 and x613) added. � Surface protection types “zinc-dust paint coating” (codes y600 and y650) re-included. � Specifications for parts without surface protection (Section 3.9) formulated in more detail. � Comparison list of VDA/Volkswagen descriptions (Table A.3) included. Previous issues 1953-06; 1954-07; 1956-10; 1958-04; 1959-03; 1959-06; 1963-03; 1963-05; 1966-06; 1966-10; 1967-05; 1967-11; 1969-10; 1970-11; 1971-12; 1972-02; 1974-08; 1975-06; 1976-07; 1980-09; 1983-10; 1986-10; 1989-12; 1991-11; 1994-10; 1999-04 1 Scope This standard applies to the identification of general surface protection types of vehicle parts and units in drawings and technical documentation. Separate technical supply specifications (TL standards) apply to special surface protection types without identification by surface code (see Appendix A.1). Page 3 VW 137 50: 2005-02 2 Description 2.1 Code structure The abbreviation for surface protection ('Ofl-' from the German word for 'surface') is followed by a code with four characters, taken from Table 2. 2.2 Example of description Surface protection: electrolytic zinc alloy coating, transparent Cr(VI)-free passivated, with lubricant treatment, heavy protection, according to TL 244. VW 137 50 – Ofl-r645 3 Requirements 3.1 General requirements The vehicle parts and units are categorized according to their corrosion load and assigned to a protection class with grade (according to Table 1) by the responsible Engineering Department upon agreement with the Volkswagen AG Central Laboratory (K-QS-32) and/or the AUDI AG Test Laboratory (I/GQ-322). Table 1 – Classification of vehicle parts Vehicle part categories Corrosion load Protection class Parts with the following features: (a) non-visible in installed condition, (b) corrosion protection serves only as protection for transportation, (c) corrosion protection is not needed for proper performance. Minor load. Light protection grade 1 Interior and exterior components in a protected installation position. Not for joining elements (for exceptions see VW 011 10). Medium load. Medium protection grade 3 Parts that are subjected to direct open-air weathering (e.g. chassis, engine, transmission). Parts that are visible in installed condition (also seen from the vehicle underside). Parts with the following features: (a) corrosion protection is required to ensure proper performance and (b) use in the interior and exterior due to reduction of material types policy, e.g. joining elements. Heavy load. Heavy protection grade 6 Finish, appearance and post-treatment Protection class Type of method Abbreviation for surface protection Page 4 VW 137 50: 2005-02 The restrictions stipulated in VW 603 61 must be observed for mechanical joining elements. The following standards apply to thread dimensions prior to surface treatment: VW 116 10, VW 116 14, VW 116 24, VW 116 25 and VW 116 27. For thread dimensions after surface treatment, VW 116 11 and VW 116 15 apply. All-metal clamping nuts must always be treated with additional or integrated lubricants. Avoidance of hazardous substances according to VW 911 01. The coatings used must be free of compounds containing Cr(VI) or lead. 3.2 Drawing specifications If a certain surface protection is required for the entire part or for several parts in an ASSY, the code shall be entered in the surface protection title block; e.g. Ofl-t650 (see also VW 010 58). If several surface protection types can be applied optionally, the codes for all permissible treatments shall be given, e.g. Ofl-r673/x630. If only partial protection is applied to a part, “see drawing” shall be entered in the surface protection title block; a wide dash-dot line with a datum line (see Figure 1) marks the given area on the part. If there is only a small area on the part that is without surface protection, the unprotected area shall be marked (Figure 2). In this case “see drawing” shall be entered in the surface protection title block. Figure 1 Figure 2 If different surface treatments are required for a part, “see drawing” shall be entered in the surface protection title block. The given areas on the part shall be clearly indicated. If parts from one ASSY are separately coated (one or more different surface treatments), “see drawing” shall be entered in the surface protection title block of the assembly drawing. The surface treatments shall be referred to separately in the part-related drawings. 3.3 Weldability If parts with surface protection are to be welded to each other or to other metal parts, the parts shall be tested for weldability. Ofl-c340 shall be provided as the standard surface protection. 3.4 Agents impairing wetting ability Lubricants and slushing oils shall be free of silicone oils and other agents that significantly impair wetting ability. without surface protection Page 5 VW 137 50: 2005-02 3.5 Friction behavior The influence of the surface protection on the friction behavior, particularly for parts with metric ISO thread, shall be determined by testing and matched to the performance characteristics. The total coefficient of friction of a test batch with surface protection type b140 and with all surface protection types with additional or integrated lubricant treatment shall be in the range from 0.09 to 0.15 (except for joining elements with adhesive or locking coating as well as tapping screws, Powerlock® screws and clamping nuts [all-metal and PA ring]). 3.6 Zinc coatings Electrolytically deposited or electroplated coatings are not permissible for high-strength steel and/or standard parts with a tensile strength of Rm > 1,000 MPA and threaded parts with a property class of � 10.9. Exceptions are possible for components that are only subjected to pressure. Zinc flake coatings according to code letter t shall preferably be used. Only in exceptional cases when electrolytically deposited zinc coating or zinc alloy coating is absolutely necessary for functional reasons can these coatings be applied with integrated heat treatment according to DIN 50969. The use of such coatings is limited to tensile strength values of 1,200 MPa for standard parts (see VW 602 50). Electrolytically zinc-coated parts or zinc alloy coated parts shall be post-treated in passivation solutions in order to improve corrosion resistance. Cr(VI)-free passivated zinc coating systems without additional coatings (paint coats) are, apart from the joining elements, only permissible for use in the passenger compartment. The appearance of zinc/nickel alloy coatings shall be matched to their immediate environment. Only transparent passivation treatment is permissible for electrically conducting connections. Additional sealing of the coating is a further improvement of the corrosion protection of zinc-coated parts and zinc alloy coated parts respectively. 3.7 Screws, bolts, nuts, threaded parts and shaped parts The test specifications according to Table 2 apply to the thread-free areas of screws, bolts, nuts and similar threaded or shaped parts; the next protection class down is applied to the thread and shank. The application of the protective layers must not result in the h-position being exceeded in the case of external threads or the H-position being fallen below in the case of internal threads. 3.8 Commercial surface protection types Commercial surface protection types can be used for less important applications (e.g. steel wire). They are not tested for corrosion resistance however. If this kind of protection is sufficient for a part, the code letter of the method and the digits 010 shall be stated. The description for commercial coating for example would look like the following: Ofl-x010. Distinction can also be made between method and finish; e.g. for commercial hot-dip tin coating: Ofl-g020. The commercial surface protection types, e.g. Ofl-c010 “commercial zinc coating” and Ofl-r010 “commercial electrolytical zinc-alloy coating” must not contain any Cr(VI) compounds. Page 6 VW 137 50: 2005-02 3.9 Parts without surface protection 3.9.1 Joining elements Parts with the description “bright”, surface protection type “without”, “-” or without any description shall, as indicated in DIN ISO 8992, be supplied in lightly oiled condition. If in exceptional cases unoiled parts must be supplied, this must be indicated in the drawing by means of the entry “not oiled”. 3.9.2 Other parts (e.g. sheets) QP-A001 applies to parts without surface protection with the description surface protection type “without” or “bright, oiled”. If in exceptional cases unoiled parts must be supplied, this must be indicated in the drawing by means of the entry “not oiled”. 3.10 Assignment of surface protection types and codes The specifications of Table 2 shall apply. Surface protection types represented in bold italics shall preferably be used for joining elements; surface protection types with a frame are standard surface protection for components without threads. Surface protection types in brackets contain Cr(VI) and are not available for new designs. Table A.3 presents the surface protection types according to VW 137 50 that correspond to the protection types of VDA1 test sheet 235-104. Table A.4 lists all the invalid protection types that were included in earlier issues of VW 137 50. Table 2 – Surface protection type codes Protection type Codes for protection classes Code letter Coating process Finish/system; requirements Post-treatment and appearance 1 light 3 medium 6 heavy not oiled b100 - - passivated b101 - - oiled, greased, wax coated b110 2) - - silver gray (for internal applications) b111 - - yellow glazing, for internal applications (water-based paint) b112 - - see Footnote 1 manganese phosphated and oiled b130 10), 22) - - b phosphated 1) thin layer zinc phosphated; TL 240 oiled b140 - - Footnotes: see Page 11 1 VDA = German Association of the Automotive Industry Page 7 VW 137 50: 2005-02 Table 2 (continued) Protection type Codes for protection classes Code letter Coating process Finish/bath type; requirements Post-treatment and appearance 1 light 3 medium 6 heavy hot-dip zinc coated TL 217 without post-treatment - c330 c630 without post-treatment 3) - c310 c610 passivated - c340 c640 passivated and sealed - c341 c641 thick-layer passivated - c342 c642 thick-layer passivated and sealed - c343 c643 thick-layer passivated, with lubricant treatment 24) - c347 c647 yellow chromated - (c350)10) (c650)10) yellow chromated and sealed - (c351) 10) (c651)10) yellow chromated, with lubricant treatment - (c355) 5),10) - Method optional for high-strength parts, however restricted acc. to Section 3.6; TL 217 olive chromated 6) - (c360)10) (c660)10) olive chromated 6) - - (c683) 10) acid bright zinc coated; TL 217 olive chromated, with lubricant treatment 7), 24) - (c385) 10) (c685)5),10) light yellow chromated, sealed - - (c686) 10) light yellow chromated, sealed, with lubricant treatment 7), 24) - - (c687)10) passivated and sealed 7) - - c696 c electrolytically zinc coated 4) weakly acidic, for contact with Mg; TL 194 passivated and sealed, with lubricant treatment 7), 24) - - c697 semi-bright nickel plated without post-treatment - e310 8) e610 9) e electrolytically nickel plated bright nickel plated without post-treatment - e320 8) e620 9) mirror-bright, with microcracks - - f620 f electrolytically chrome-plated bright chrome- plated; TL 203 mirror-bright - f350 f650 electrolytically tin coated bright tin coated without post-treatment g100 g300 g600 g 11) hot-dip tin coated without post-treatment g120 g320 g620 k electrolytically copper-plated without post-treatment k110 12) k310 10),12) - silvery matte without post- treatment - - q600 Al coating, TL 243 silvery matte, with lubricant treatment 24) - - q605 silvery gloss without post- treatment - - q610 q electrolytically aluminum-alloy coated Al/Mg coating, TL 243 silvery gloss, with lubricant treatment 24) - - q615 Footnotes: see Page 11 Page 8 VW 1