181 PA Brazing paste

181 PA

Ready-to-use, dosable binder suspension made of high-silver, cadmium-free, fine-grained brazing powder with flux components in an optimum mixing ratio.
Solder alloy insensitive to overheating. The paste is intended for manual and mechanized processing.
mechanized processing. Due to its precisely defined viscosity and homogeneous consistency, it is particularly suitable for series production with automated dispensing equipment.
Dense, fine and clean seams. Paste and flux residues are water-soluble.

Technical data
Brazing alloy
ISO 17672: AG 220
EN 1044: AG 206
DIN 8513: L-Ag20

Flux content
EN 1045: FH 10
DIN 8511: F-SH1

Melting interval [°C]: 690 - 810 (Sol./Liq.)
Soldering temperature [°C]: 810
Density (paste) [g/cm3]: approx. 2.7
Density (solder content) [g/cm3]: approx. 8.7
Grain size (solder content) [μm]: < 70

Applications
For joining iron and copper materials as well as hard metals.

Typical application examples are:
Bronze and brass fittings, band saw blades, hard metal tools, soldering of diamonds, measuring instruments, electrical contacts, cable connections, current collectors, earthing rails, connections of resistance elements, metal goods.

Processing instructions
Make the connection zone bright, deburr and round/bevel edges if necessary. Apply the well-mixed solder paste to the solder joint by hand or using a dispensing device. Fix smaller workpieces accordingly to ensure the recommended solder gap width of 0.05 to approx. 0.1 mm during soldering. Remove corrosive flux residues.

Soldering with the oxy-fuel torch
Set the flame to neutral or with a slight excess of acetylene. Burn off the binding agent or allow it to evaporate. Heat the solder joint indirectly with a flame until the solder flows out. Do not overheat.

Soldering in the oven
Allow the inert binder to evaporate from the solder paste at a temperature of approx. 150 °C (using hot air, infrared lamp, oven). For subsequent soldering - especially with solid workpieces - the use of an inert gas or continuous furnace is advantageous. The soldering temperature in the oven should be at least 860 °C.
Other methods such as induction or resistance brazing can also be used.

Delivery form
181 PA: Brazing paste, 0.25 kg