When the liquid temperature (liquidus) of the alloy (rod or wire) you are using is 840°F or lower, the process is considered soldering. Brazing occurs when the liquid temperature of the alloy is above 840°.
This completely water-soluble/flushable, acid-free, lead-free, self-cleaning flux is suitable on all types of tin solder and their alloys. Its self-cleaning action will solder dissimilar metals and works well on older or tarnished copper without having to brush or sand the surface.
Contractors need to make sure these 10 things happen
November 7, 2016
In conjunction with the release of its latest soldering procedure, the Mechanical Contractors Association of America’s (MCAA’s) National Certified Pipe Welding Bureau (NCPWB) encourages contractors to make sure the following 10 things happen when their workers are making soldered joints.
Demonstrates how to join aluminum to copper using company’s soft solder kit
January 29, 2016
Uniweld’s UNI-4300 Soft Solder Kit is designed to simplify the process of joining dissimilar metals, enabling HVAC technicians to join them with low heat, minimizing the possibility of melting the base metal. The company’s UNI-4300 instructional video demonstrates one of the methods used to join aluminum tube to a copper tube.
The National Certified Pipe Welding Bureau (NCPWB), a subsidiary of the Mechanical Contractors Association of America (MCAA), announced it has developed a new soldering procedure in accordance with ASTM B-828, Standard Practice for Making Capillary Joints by Soldering of Copper and Copper Alloy Tube and Fittings.
TurboTorch® is offering hands-on demonstrations of its solutions for brazing, soldering, cutting, and welding in HVAC and plumbing applications. Demonstrations include soldering and brazing of copper tubing, brazing of black iron pipe, and how to solder copper and aluminum tubing.
Legislation Prompts CDA to Revisit Soldering Techniques for Making Proper Joints
December 8, 2014
Concerns related to soldering copper tube and the new no-lead copper alloys led the Copper Development Association (CDA) to conduct laboratory research and testing out in the field. The CDA found that, in many cases, those working with the new no-lead copper alloys were using the incorrect soldering procedure.
Refrigeration technicians need to use extreme care when working with torches during the brazing and soldering process. The flames of a torch can easily reach 3,000°F. At this temperature, serious damage can be the result of misuse and carelessness.
For the HVACR technician, the right tool for soldering and brazing pipe — an air-fuel or oxy-fuel torch — depends on the type and diameter of the pipe, its location, and considerations related to cost, safety, convenience, and ease of use. This article will examine those factors, as well as clarify some technical issues.
NetBraze® LLC is introducing a new phos copper brazing rod that has been modified to also become silver solder. For well over 75 years, says the company, phos copper brazing rods (AWS BCuP 1-7) only brazed copper and brass metals.
In this issue, we cover ductless products for the commercial market. We also look at alternative refrigerants and trends in R-22 reclamation. Other topics include a summer forecast, business franchises, and more.
Check back for additional content throughout the week.