Zinc/Nickel Alloy Coatings This Technical Supply Specification (TL) specifies requirements for electrolytically deposited and Cr(VI)-free post-treated zinc/nickel alloy coatings on ferrous materials and steel parts with a tensile strength Rm ≤ 1 000 MPa according to code letter “r” specified in...
ThefollowingchangeshavebeenmadeascomparedtoTL244:1995-12: - IntroductionofCr(VI)-freeconversionlayersonthebasisoftheEnd-of-LifeVehiclesDirective oftheEuropeanUnion(AltautoV)(seetable2) Ofl-r640replacedbyOfl-r642andOfl-r643 SealingforOfl-r645notpermittedanymore ...
TL_244_EN Group standard TL 244 Issue 2017-06 Class. No.:50204 Descriptors:zinc, nickel, passivation, sealing, chromium (VI)-free, Cr(VI)-free, corrosion protection, surface protection, alloy coating, Ofl-r642, Ofl-r643, Ofl-r645, Ofl-r649, Ofl-r672, Ofl-r673, Ofl-r677 Zinc/...
TL244-2010 锌镍—合金涂覆层表面保护要求 2.标识 参见VW13750,第2章节。 3.技术要求 3.1表面防护类型 表面保护类型见表1: (a)如使用弱酸电解质,必须与GQL-LM/2和/或I/GQ-32部门商定。 表面保护类型特性和外观 Ofl-r642 锌/镍-涂覆层,钝化处理(外观为银色至淡蓝色红光)涂层表面适用于 ...
(VI),防腐蚀,表面保护锌/镍-合金涂覆层表面保护要求旧版本TL 244: 1987-10, 1992-05, 1993-11, 1995-12, 2002-05, 2004-12, 2006-08, 2007-02变更相对于 TL244: 2007-02 版本,作了如下更改:--补充了热处理后零件的抗拉强度≦ 1200Mpa 部分;--添加了 Ofl-r647 和 Ofl-r648 两种涂覆方法;--原...
(VI),防腐蚀,表面保护锌/镍-合金涂覆层表面保护要求旧版本TL 244: 1987-10, 1992-05, 1993-11, 1995-12, 2002-05, 2004-12, 2006-08, 2007-02变更相对于 TL244: 2007-02 版本,作了如下更改:--补充了热处理后零件的抗拉强度≦ 1200Mpa 部分;--添加了 Ofl-r647 和 Ofl-r648 两种涂覆方法;--原...