Tham khảo tài liệu 'navfac p-433 welding materials handbook_2', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | TYPE SimpOPDF- Merge and Split Unregistered Version tottp Www .Simp nbronze . Use medium arc gap. NOTE USE GOOD NSN 9GJ 3439-00-262-2739 1 8x14 9GD 3439-01-131-4934 5 32X 14 VENTILATION. Hold electrode 10-15 degrees off perpendicular. POSITION Flat CHARACTERISTICS Has rapid deposition rate. Deposit is a copper-base POLARITY DC Reverse alloy. RECOMMENDED AMPERAGES Hardness Deposited 130 BHN 1 8 - 80 to 160 3 16 -130 to 250 Work Hardens to 230 BHN Tensile Strength 90 000 psig USES Primary For high-strength joints on cast iron steel and copper alloys. For joints and dissimilar combinations susceptible to cracking. Excellent for overlaying surfaces subject to frictional wear and corrosive attack by salt water. Secondary Can be used for joining stainless nickel and nickel alloys. PROCEDURES Bevel crack to 90 angle. Preheat heavy steel and cast iron sections to 200 F. Preheat heavy copper 1-15 TYPES impo PDF Merge and Split Unregistered Version -http of water. Can be used extruded flux-coated rod E-4043 with carbon arc To use as a TGA rod remove flux. NSN 9GD 3439-00-803-9496 3 64x14 9GD 3439-00-165-4177 1 8X 14 9GD 3439-01-139-3498 5 32X 14 9GD 3439-00-246-0541 3 16X 14 PROCEDURES Bevel 1 8 in. or heavier to 750 vee. On heavy sections preheat to 400 F. Maintain short arc. Hold electrode almost perpendicular to work or slightly in direction of travel. Back whip at crater. POSITION Flat horizontal or vertical Chip slag before quenching. Use Marcoloy 500. POLARITY DC Reverse CHARACTERISTICS Keep rod dry flux will absorb moisture from the air RECOMMENDED AMPERAGES easily. 1 8 - 90 to 140 5 32 -125 to 175 Tensile Strength 25 500 psig USES Primary Arc welding of all weldable grades of aluminum in extruded plate or sheet and sand and die castings. Use for welding aluminum landing mats when GMA is not available or dirt moisture or wind make GMA impractical. Secondary Use with torch for welding aluminum. To make an aluminum paste flux .
