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Brazing Hearth

From DT Online

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Description

Brazing Hearths are usually at bench height and provide a convenient, heat proof and shielded location for Hard Soldering and Annealing. They are used in combination with a Blow Torch fuelled by natural gas, and for which they may have a built-in air compressor, or a Gas Torch fuelled by Liquefied Petroleum Gas (LPG)


Note: Keep the Brazing Hearth clean and dry and avoid using it for Soft Soldering : soft solder residues and splashes of lead/tin solder alloys can contaminate or adversely react with metal surfaces when heated sufficiently for Hard Soldering (this is especially true when working silver since the contamination could affect the assayable value of the finished product).


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Features and Applications

Commercially available Brazing Hearths often have air compressors built-in to supply natural gas fuelled Blow Torches. Some also have a rotary table such that the workpiece can be turned as it is heated - this is particularly helpful when Annealing large items in Beaten Metalwork for example.


A perfectly serviceable Brazing area for use with an LPG fuelled Gas Torch can be assembled using Firebricks and other Refactory Materials such as Vermiculite. The materials can be assembled on a steel plate set within an angle section frame and mounted on a steel turntable bearing to create a rotary table if required.


Safety Point! Do note play a torch flame on to firebricks which have become wet : the resulting heat will turn the soaked in water into steam which may cause the bricks to explode!



DT Online Buyers' Guide
Insulating Fire Bricks 230 x 114 x 76 mm x 5 Fire Bricks-Replacement for Stoves & Fireplaces x 5 - Large Vermiculite Fire Boards - 400 x 300 x 25 mm High Density CLARKE LPG GAS TORCH 3 NOZZLE 10/14/17mm PC109 Rothenberger Superfire 2-Turbo Brazing Torch Rothenberger MAPP Gas Cylinder 400gms Professional Heat Resistant Brazing and Soldering Plumbers BURN MAT SILVER Ultra Thin and Cuttable by NAC INDUSTRIAL Web Traders Online LAZY SUSAN BEARING 12 QBL Lazy Susan 6 Inch Square bearing 119.12x 152.4x7.93 MADE IN THE USA
Insulating Fire Bricks Fire Bricks Vermiculite Fire Boards CLARKE LPG GAS TORCH Rothenberger Superfire 2-Turbo Brazing Torch Rothenberger MAPP Gas Cylinder 400gms Professional Heat Resistant Brazing and Soldering Mat 300MM HEAVY DUTY TURNTABLE BEARING SWIVEL 6 Inch Square bearing