Joining by brazing

The qualification of brazing procedures, brazers, or brazing operations is required in accordance with the requirements of Part QB, Sec. IX, ASME Code, except that for Category D fluid seiwice at design temperatures not over 93°C (200°F). Such qualification is at the owners option. The clearance between surfaces to be joined by brazing or soldering shall be no larger than is necessary to allow complete capillary distribution of the filler metal. 

The anodes most suitable for burying in soil are cylindrical anodes of high-silicon iron of 1 to 80 kg and with diameters from 30 to 110 mm and lengths from 250 to 1500 mm. The anodes are slightly conical and have at the thicker end for the current lead an iron connector cast into the anode material, to which the cable connection is joined by brazing or wedging. This anode connection is usually sealed with cast resin and forms the anode head (see Fig. 7-2). Ninety percent of premature anode failures occur at the anode head, i.e., at the cable connection to the anode [29], Since installation and assembly costs are the main components of the total cost of an... 

Joining Tantalum can be joined by riveting, brazing and welding however, due to the good properties of welded joints the former techniques are seldom used. 

All underground steel service lines shall be joined by threaded and coupled joints, compression-type fittings, or by qualified welding or brazing methods, procedures, and operators. 

A connection where the individual components, suitably prepared and assembled, are joined by welding or brazing. 

Brazing— Welding with coalescence by heating, using nonferrous filler metal welding, i.e. joining by heat, is the generic term. 

In the last twenty years, stainless steel has become popular as a material of construction of brewery vessels, especially vessels that are of relatively simple shape and constructed of cold-rolled stainless steel sheet. Copper is extremely attractive but is more expensive to purchase and maintain than stainless steel. It has a much higher thermal conductivity but for construction of vessels has to be of greater thickness than stainless steel sheet (Table 15.1). Copper sheet is more suitable however for complex shapes of vessels and can be joined by rivetting and brazing whereas stainless steel is welded. 

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