AWS D14.9/D14.9M:2013 pdf free download

AWS D14.9/D14.9M:2013 pdf free download.Specification for the Welding of Hydraulic Cylinders.
(4) Requalificaion as a result of(3) is permitted by having the welder or welding operator successfully complete performance qual3hcation test(s) that support the quail lication(s) questioned.
7.2.7 For Friction Welding (FR). welding operator qualification shall be in accordance with AWS C6.2/C6.2M, Specification for Friction Welding of Merahc.
7.2.8 For Stud Welding (SW), the pre-production test required by 7.3.2. if successful, shall also serve to qualify the stud welding operator. Before any production studs are welded by an operator not involved in the pre-production set-up of 7.3.2. the first two studs welded by the operator shall have been tested in conformance with the provisions of 7.3.2.3 and 7.3.2.4. When the two welded studs are found satisfactory, the operator may then weld production studs. Operator qualification br stud welding is required for the first two studs in each day’s production or any change in the set-up such as changing of any one of the following: stud gun. timer, power source, stud diameter, gun lift and plunge. total welding lead length. or changes greater than 5% in current and time.
7.2.9 For Projection Welding (PW). the pre-production test required by 7.3.3, if successful, shall also serve to qualify the projection welding operator. Before any production projection welds are welded by an operator not involved in the pre-production set-up of 7.3.3, the first two projection welds welded by the operator shall have been tested in conformance with the provisions of 7.3.3 and shall be visually inspected in accordance with 7.1.6.1 and destructive testing as agreed upon between the owner and the manufacturer. When two projection welds are found satisfactory, the operator may (hen weld production. Operator qualification for projection welding is required for the first two welds in each day’s production or any change in the sdt-up such as listed in AVS Cl .4MJCI .4. Specification for Resistance Welding of carbon and Low Alloy Steels.
7.2.10 Performance Qualification Variables for CMAW, FCAW, GTAW, PAW, and SAW. Qualification with one WPS will also qualify for welding with any other WPS within the limits given in the following performance qualification variables shown in Table 3.
7.2.11 Operators of Automatic Welding Fquipmcnt The manufacturer shall be responsible for determining the qualification requirements of operators of automatic welding equipment.
7.2.12 Records. Documentation of the test results shall be maintained by the Manufacturer. Documentation should be maintained tha shows the qualified welder, tack welder, or welding operator has maintained their qualification by welding within a 6 month period of time.AWS D14.9/D14.9M:2013 pdf free download.