Welcome to the aluminium brazing blog site. We will regularly be publishing articles about aluminium brazing in this blog and we look forward to your comments, remarks and questions. Behind the scenes in this blog are the specialists for aluminium brazing from Solvay Fluor. This blog is a corporate blog and offers you new, additional ways to communicate with us.
written by Leszek Orman, Radziszow / Poland; Hans-Walter Swidersky, Hannover / Germany Abstract In 2001 and in 2009 respectively, Solvay introduced two new fluxes for aluminium brazing: – NOCOLOK®Zn Flux (a ‘reactive flux’ – for the creation of precisely controlled sacrificial layers on part surfaces); and – NOCOLOK®Li Flux (for improving corrosion resistance of stationary […]
Attachment Powder Fluidity Indicator Definition of the Variables and Calculation of the Results Preliminary remark: The spraying factor Rm is a relative value for the evaluation of powders used for dry fluxing – especially when the material transport in the used equipment depends on the fluidization property of the powder. Expansion factor: Expansion factor […]
The Theory and Practice of the Flame- and Furnace-Brazing of Aluminium Dates: October 9 & 10, 2018 in Hannover/Germany Purpose of the Seminar: The language of the seminar is English. It will take place in the Conference Center and laboratories of Solvay GmbH, in Hannover, Germany. It will provide information concerning the manufacturing practices commonly used […]
The 10th International Congress and Exhibition Aluminium Brazing, organised by the DVS German Welding Society, will take place from 12 – 14 June, 2018 in Düsseldorf/Germany in the Radisson Blu Scandinavia Hotel. Leading specialists and authorities from the sector, well known experts from industry and research and other important decision makers from this field will […]
Flux Transfer Systems in Electrostatic NOCOLOK® Flux Application For these experiments, a fluxing booth from Nordson designed for semi-continuous production was used. This unit’s (216 cm height, 143 cm width, 270 cm depth) key components are a hopper, a spray gun, two filter cartridges and the necessary control units. The work piece is placed […]
Flux Powder Adhesion: Dust formation and flux fall off are of general interest to the brazing industry. Regardless of the application method, dust generation (particularly airborne fines) must be avoided or kept to a minimum. If dust formation cannot be prevented, local exhaust ventilation and meticulous housekeeping are recommended. The inhalation of flux dust […]
Experiments for Flux Powder Fluidization: To illustrate the relationship between flux properties and fluidization, a series of tests was carried out using Sample 1 and Sample 2. Attached are print-outs of the particle size distribution analysis (Sympatec Helios H0851; dry powder analysis with laser) of both materials. Table 1: Particle Size Distribution Sample 1 […]
Flux Powder Fluidization: In an effort to develop a flux with more desirable properties for electrostatic application, the first step is to qualify criteria. In summary of the above, it is apparent that fluidization is one of them. There is standard equipment available on the market to quantify fluidization characteristics. However, when we tested […]