Volume 06 - Welding, Brazing and Soldering Part 13 pps

MODERN WELDING TECHNOLOGY, METALS HANDBOOK, WELDING HANDBOOK, TABLE 1 RELATIVE ARC WELDABILITY OF MAGNESIUM ALLOYS ALLOY RATING CASTING ALLOYS WROUGHT ALLOYS TABLE 2 COMPOSITION OF SELECTED MAGNESIUM ALLOYS DESIGNATION COMPOSITION, WT% ASTM UNS NO. Al Li Mn Rare earths Th Zn Zr Ca Cu Fe [...]... STRESS RELIEF IN MAGNESIUM ALLOYS ALLOY SHEET EXTRUSIONS CASTINGS(C) TEMPERATURE TIME °C °F 1989 ANNUAL BOOK OF STANDARDS, CAST METALS; ALUMINUM AND MAGNESIUM ALLOYS, MODERN WELDING TECHNOLOGY, DIE- • • • • • • • TABLE 1 CHEMICAL COMPOSITION REQUIREMENTS FOR TITANIUM AND TITANIUM ALLOY ELECTRODES AND RODS AWS CLASSIFICATION 1990 1970 UNS COMPOSITION, WT% NUMBER C O H N Al V Sn Fe OTHER ... SHIELDED ARC WELDING OF SELECTED THICKNESSES OF MAGNESIUM ALLOY SHEET AND PLATE TYPE OF JOINT APPLICABLE RANGE OF WORK-METAL THICKNESS(A) GTAW(B) GMAW(C) AC DCEN DCEP SHORT CIRCUITING mm in mm in mm in mm in PULSED ARC mm in SPRAY ARC mm in TABLE 6 TYPICAL DEPTH OF GROOVES IN BACKING BARS OR PLATES USED IN ARC WELDING OF MAGNESIUM ALLOYS BASE-METAL THICKNESS DEPTH OF GROOVE GTAW GMAW NO ROOT OPENING(A) ROOT... OPERATING PARAMETERS FOR AUTOMATIC GTAW OF AZ31B MAGNESIUM ALLOY BUTT JOINTS TYPE OF CURRENT CURRENT A DIAMETER OF TUNGSTEN ELECTRODE ARC LENGTH mm mm in AZ31B, 1.60 MM (0 .063 IN.) THICK in ER AZ61A OR ER AZ92A FILLER METAL, 1.60 MM (0 .063 IN.) DIAM FEED RATE CONSUMPTION OF WELD m/min in./min kg/m lb/ft TRAVEL SPEED mm/min in./min AZ31B, 4.83 MM (0.190 IN.) THICK AUTOMATIC GTAW • • • • • • • • MANUAL GTAW... GMAW NO ROOT OPENING(A) ROOT OPENING mm in mm in mm in mm in TABLE 7 PREHEAT TEMPERATURES AND POSTWELD HEAT TREATMENTS FOR MAGNESIUM ALLOY CASTINGS ALLOY TEMPER OF ALLOY(A) BEFORE AFTER WELDING TREATMENT MAXIMUM PREHEAT TEMPERATURE(B) °C °F POSTWELD HEAT TREATMENT(C) TABLE 8 TYPICAL OPERATING CONDITIONS FOR GAS-METAL ARC BUTT WELDING OF MAGNESIUM ALLOYS AT WELDING SPEED OF 610 TO 915 MM/MIN (24 TO 36... CONSUMPTIO N OF WELD kg/m lb/ft CURREN T, A VOLTAG E, V ARGON FLOW RATE m3/ ft3/ h h SPRAY ARC MODE OF METAL TRANSFER(E) TABLE 9 TYPICAL PARAMETERS FOR MANUAL GTAW OF BUTT JOINTS WITH MAGNESIUM ALLOYS BASE-METAL THICKNESS mm in JOINT DESIGN(A) NO OF PASSES ELECTRODE DIAMETER mm in AC CURRENT(B), A ARGON FLOW RATE m3/h ft3/h FILLER METAL DIAMETER CONSUMPTION mm in kg/m lb/ft CONDITIONS FOR MANUAL GTAW TABLE . EACH TOTAL Mg