Soldering method using a flux containing borneol
First Claim
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1. A method of soldering electrical components, the method comprising the steps of:
- applying a flux solution to a first surface, the flux solution consisting essentially of borneol, a volatile vehicle, and optionally one or more constituents chosen from the group consisting of activators, wetting agents and surfactants;
allowing said volatile vehicle to substantially evaporate and leave a coating of a borneol-containing flux composition on said first surface; and
then soldering said first surface to a second surface.
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Abstract
A soldering flux containing borneol, which is also referred to as bornyl alcohol. A method soldering using such a flux is also disclosed. Even minor proportions of borneol in the flux help reduce ionic residue from the flux after soldering. Larger proportions of borneol can give the flux tackiness for wave soldering operations. The flux preferably comprises borneol and an organic acid activator that volatilizes during soldering. The flux is applied as a solution of borneol and the organic acid activator in a solvent that substantially evaporates before soldering without leaving any measurable solvent residue.
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Citations
8 Claims
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1. A method of soldering electrical components, the method comprising the steps of:
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applying a flux solution to a first surface, the flux solution consisting essentially of borneol, a volatile vehicle, and optionally one or more constituents chosen from the group consisting of activators, wetting agents and surfactants;
allowing said volatile vehicle to substantially evaporate and leave a coating of a borneol-containing flux composition on said first surface; and
thensoldering said first surface to a second surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification