ISO 18137:2015 pdf download

ISO 18137:2015 pdf download.Leaf springs — Technical specifications
1 Scope
This International Standard specifies the technical specifications for leaf springs.
This International Standard is applicable to leaf springs for road vehicle (hereinafter simply “springs”).
The leaf springs for other vehicle may refer to this International Standard.
2 Normative references
The following referenced documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 683-14, Heat-treatable steels, alloy steels and free-cutting steels — Part 14: Hot-rolled steels for quenched and tempered springs
ISO 3887, Steels — Determination of depth of decarburization
ISO 6506-1, Metallic materials — Brinell hardness test — Part 1: Test method
ISO 6508-1, Metallic materials — Rockwell hardness test — Part 1: Test method
ISO 16249, Springs — Symbols
ISO 18265, Metallic materials — Conversion of hardness values
ISO 26909, Springs — Vocabulary
ISO 26910-1, Springs — Shot peening — Part 1: General procedures
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 26909 and Table 1 apply.
4 Symbols
For the purposes of this document, the symbols and units given in ISO 16249 and Table 1 apply.
6.4.4 Presetting
Unless otherwise agreed by the purchaser and the supplier, the springs should be preset. The presetting conditions should be agreed between the purchaser and the supplier.
6.4.5 Lubricant and surface protection
Whenever lubricating is required, the contact surface of the leaves should be coated with lubricating materials.
The springs should be coated with surface coating specified in the design drawing to protect against corrosion with surface.
6.4.6 Surface conditions
The harmful defects of the tension side surface of the springs should be minimized, such as laminations,grooves, tooling marks, racks, crevices, which are harmful in use.
The spring eyes may show traces of tooling in an arc of approximately 120° on the exterior side of the eye gap caused by the process. (For test methods, see A.Z)
7 Designation
Unless otherwise agreed by the purchaser and the supplier, the springs should be designated. The designation methods and the designation contents should be agreed between the purchaser and the supplier.