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US 9,174,310 B2Granted
Boric acid free flux
AssigneeLincoln Global, Inc.
InventorRobert A. Howard
Life of this patent
Estimating the term…
Abstract
The invention described herein pertains generally to boric acid free flux composition wherein in some embodiments, a phthalocyanine pigment is used to effect a color change at activation temperature.
Claims6
A boric acid free powder flux composition which comprises:
- Potassium tetraborate (K2B4O7•4H2O)
- 46.2-51.6%
- Potassium fluorosilicate (K2SiF6)
- 1.20-1.99%
- Potassium Fluoroborate (KBF4)
- 46.2-51.6%
- Boron
- 0.85-1.02%
- wherein said components are combined so as to total 100% by weight.
6 more elements
A boric acid free powder flux composition which comprises:
- Potassium tetraborate (K2B4O7•4H2O)
- 46.2-51.6%
- Potassium fluorosilicate (K2SiF6)
- 1.20-1.99%
- Potassium Fluoroborate (KBF4)
- 46.2-51.6%
- Pigment
- 0.50-0.98%
- wherein said components are combined so as to total 100% by weight.
6 more elements
Dependencies are inferred from the claim text.