AWS D14.9-D14.9M:2013 pdf download.Specification for the Welding of Hydraulic Cylinders
1.1.1 This specification provides requirements for the design and manufacture of welded joints of hydraulic cylinders.When specified in the purchasing documents, compliance with all the requirements shall be required. This specification does not apply to the manufacture of welded tubing used for hydraulic cylinders which is covered under ASTM and other recognized specifications. This specification does not specify load determination, design assumptions, safety factors, or calculation methods for non-weld related areas of the hydraulic cylinder.
Work performed in accordance with this standard may involve the use of materials that have been deemed hazardous, and may involve operations or equipment that may cause injury or death. This standard does not purport to address all safety and health risks that may be encountered. The user of this standard should establish an appropriate safety program to address such risks as well as to meet applicable regulatory requirements. ANSI Z49.1 should be considered when devel-oping the safety program.
1.4 Symbols. Welding symbols shown on drawings shall be compatible with those shown in AWS A2.4, Standard Symbols for Welding, Brazing, and Nondestructive Examination. In addition, welding symbols not conforming to the requirements of AWS A2.4, but conforming to the requirements of this specification may be allowed on drawings.Special conditions or deviations shall be fully explained by added notes, details, or definitions on the drawings.
4. Base Materials
4.1 Ferrous and Nonferrous Metals. Rolled steels, steel castings and forgings, and nonferrous metals used in the weldments for hydraulic cylinder applications shall be identified by a specification. Specifications developed by the Manufacturer or commonly used industry-wide specifications developed by organizations such as the American Society for Testing and Materials (ASTM), American Iron and Steel Institute (AISI), Society of Automotive Engineers (SAE),and American Foundrymen's Society (AFS) may be used.
4.2 Properties. Base metal specifications shall designate the chemical composition of the material to be used and shall include the mechanical properties and/or heat treatment of the material when required for proper identification. Base metals are expected to be compatible with the welding process and consumables recommended in this specification. It is not intended that base metal selection be restricted, but to assure weldability factors have been considered.
6.2 For combination of weld types that progressively transition between fllet and groove welds such as port to tube welds or rod to cross tube, if the maximum groove width (as designed) does not exceed 3/32 in [2.5 mm], the weld shall be considered a fllet and shall be depicted using a fllt weld symbol. Refer to Figure 1.AWS D14.9-D14.9M pdf download.