Whole Sale Handbags-Brazing Aluminum

The brazing process has five steps: cleaning work pieces, fluxing them, securing them in place, brazing them and cleaning them again. Depending on a metal's composition (e.g. aluminum vs. steel), each step has different requirements that affect the quality of the finished piece, of the work pieces. For those who understand brazing, but not how to braze aluminum, listed below are important considerations regarding the latter.
The base metal should be free of residue, dirt and oxidization before being brazed. When high quality joints are required, aluminum's oxide finish should be removed as well-a process that amounts to thinning the finish, not removing it. For small pieces, a stainless steel brush can be used, with care taken not to imbed the oxide in the base metal. Large pieces and pieces that have thick coatings are usually dipped in acid solution handbags wholesale.
There are three things to consider about the heating process: what heating method is ideal, what temperature is necessary based on the composition of the base metal, and clearance between work pieces.
Four heating methods are commonly used for brazing aluminum: handheld torch, used for repairs and small production runs; flux-dip heating, used to join pieces that have different wall thicknesses or other variations; furnace heating, preferred for heating alloys and large production runs; and vacuum and controlled atmosphere heating, creating the highest quality joints and lowest corrosion whole sale handbags.
The necessary temperature, and in turn the necessary filler metal, depend on the base metal's composition. When choosing a heat source or filler, know the type of metal you have concerning its alloy, gauge and temper. This will determine the temperature and whether high or low temperature filler will be used fashion handbags wholesale.
When calculating clearance between work pieces (.0015 inches is recommended), calculate the thermal expansion effect for your metal. Unlike most metals used in fixtures, aluminum features a high coefficient of expansion, making it easy to not achieve the right clearance between work piecesbest handbags wholesale.