Leírás
Ar védőgázas AVI/TIG hegesztőpálca.
Az CuSn6 (Ónbronz) összetételű huzalok a réz mellet 6% Sn= ónt tartalmaznak így ónbronz hatású a huzal és a varrat szine.
Kis energiájú ívhegesztés hatására a horganyzott felületről a horgany nem ég le, nincs fröcskölés és rozsdamentes, ausztenites anyagok forasztása esetén is a kisebb hőbevitel miatt sokkal kissebb az alaváltozás, mint hagyományos ívhegsztés esetében.
Az autóipari, járműipar számára, főleg lemezmunkák, burkolatok tartós kötéséhez fejlesztették ki ezt az eljárást ,hogy különböző fémes anyagokat minimális fröcsköléssel, kis alakváltozással tudjanak összefrosszatni tartós mechnikai igénybevételnek egyéb környezeti hatásoknak kitéve.
Extrém esetben alumíniumot és rozsdamentes anyagot is össze lehet ezzel az eljárással hegeszteni.
Ld./ie.:
https://www.millerwelds.com/resources/article-library/silicon-bronze-mig-brazing-basics
Ideal for joining of galvanized metal sheets.
For MIG/TIG welding and weld-surfacing on low-alloyed copper alloys and on CuZn alloys.
Also for wear-resistant surfacing on low and unalloyed steel and on cast iron.
For welding of metal sheets thicker than 3,0 mm preheating to approx 250-300 °C is recommended.
For MIG weld-surfacing on big pieces preheating to approx 250 °C is recommended.
For layered weld-surfacing on ferrous base metals pulsed arc welding is recommended.
MIG brazing benefits:
MIG brazing may not be a familiar process to many, but it is no stranger in the welding world. MIG brazing is a welding process that has been around for years and is gaining popularity with professionals and hobbyists alike due to the benefits it can offer, especially with silicon bronze filler metal.
Learn about MIG brazing, silicon bronze and how to properly set up your welding power source for MIG brazing silicon bronze.
What is MIG brazing?
Brazing processes have traditionally used an oxy-fuel acetylene torch to melt the filler metal, but in MIG brazing, a standard MIG gun is used to run brazing wire. Brazing filler metal melts at 840 degrees Fahrenheit, which is lower than the melting point of the base metals being joined. Due to the lower melting point, the filler metal provides capillary action — fluid being drawn into the weld joint — when brazed.
What is silicon bronze?
Silicon bronze filler metal is mostly comprised of copper, silicon, tin, iron and zinc. The composition of the wire provides some unique benefits such as the ability to weld dissimilar metals together, reduce distortion and provide a visually appealing finish.
Welding dissimilar metals
When braze welding with silicon bronze filler metal, the molten metal bonds the base materials together but does not provide fusion like mild steel filler metal. Because of this, silicon bronze can be used for welding together dissimilar materials such as cast iron to steel or stainless steel to steel.
Datasheet - Rod/wire electrode for Copper alloys
Typical composition in %
Al < 0,01
Zn < 0,10
Sn 4,00 - 7,00
Pb < 0,02
Fe < 0,10
P 0,01 - 0,40
Others total < 0,20
Classification
ISO 24373 S Cu 5180A (CuSn6P)
DIN 1733 SG-CuSn6
Material No. 2.1022
BS 2901 part 3 C 11
AWS A 5.7 ER CuSn - A
Base materials
CuSn4; CuSn6; CuSn8
Remarks
Filler wire for joining and surfacing of bronzes. Tough and pore-free weld metal with a controlled content of Phosphor.
Physical properties (Approx. values)
Electrical conductivity [S*m/mm²] min. 35
Heat conductivity at 20° C [W/(m*K)] 210-230
Linear heat extension coefficient (20-100°C) [1/K] 23,5 * 10-6
Physical properties (Approx. values)
Electrical conductivity [S*m/mm²] 9
Density [kg/dm³] 8,7
Solidus-Temperature [° C] 910
Liquidus-Temperature [° C] 1040
Tensile strength Rm [MPa] 320 - 360
Elongation A5 (Lo=5d0) [%] 25
Hardness [HB] 80 - 90
Welding position
PA, PB, PC, PD, PE, PF
·High temperature and corrosion resistant
Typical Applications
·Copper, low alloy copper and copper-zinc alloys
Welding Positions
All
Shielding Gas
·I1 : Inert gas Ar (100%)
·I3: Inert gas Ar+ 0.5-95% He
