AWS D8.14M:2017 pdf download.Specification for Automotive Weld Quality - Arc Welding of Aluminum
1.1 Scope The purpose of this specification is to provide the minimum acceptance criteria for arc welding of various types of automotive parts made of aluminum alloys.
1.2 Units of Measurement This standard makes sole use of the International System of Units (SI).
1.3 Safety Safety issues and concerns are addressed in this standard, although health issues and concerns are beyond the scope of this standard. Safety and health information is available from the following sources:
American Welding Society:
(1) ANSI Z49.1, Safety in Welding, Cutting, and Allied Processes
(2) AWS Safety and Health Fact Sheets
(3) Other safety and health information on the AWS website
Material or Equipment Manufacturers:
(1) Safety Data Sheets supplied by materials manufacturers
(2) Operating Manuals supplied by equipment manufacturers
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.
3. Terms and Definitions
AWS A3.0M/A3.0, Standard Welding Terms and Definitions, provides the basis for terms and definitions used herein. However, the following terms and definitions are included below to accommodate usage specific to this document.
discrepant weld. A weld differing from the requirements of this standard. Even though this weld differs, it still may have useful engineering properties.
effective weld length. The weld length measured along the portion of a weld that meets all the minimum acceptance requirements of the specification.
gap. The distance between two base components of the joint to be welded (see Figure 1). Note: This distance is typically referred to as the root opening in nonautomotive applications.
meltback. This occurs where the base metal melts back from an edge, but does not become part of the weld. This condi-tion leaves a void between the weld deposit and the base metal (see Figure 2).
notching. A weld-heat-related burn back of material at the end of the joint resulting in a notch (see Figure 3).
pore. A rounded cavity-type discontinuity formed by gas entrapment during solidification.
skip. An unwelded portion of a designated weld (see Figure 2).
suck-back. A concave surface on the side of the base metal opposite the point of weld metal application. This is illus-trated in Figures 4 and 5. Note: AWS A3.0M/A3.0, Standard Welding Terms and Definitions Including Terms for Adhesive Bonding, Brazing, Soldering, Thermal Cutting, and Thermal Spraying, refers to suck- back as“a nonstandard term when used for underfill at the root surface".AWS D8.14M pdf download.