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High-Purity Brazing Alloys Although the final properties of the brazed joint depend on a number of factors, in most cases the use of VTG alloys, allowed for manufacturing of strong and ductile joints, are hermetically sealed. Further benefits of using VTG alloy, depending on application and service ...

Braze Joint Design Lucas-Milhaupt serves a wide variety of manufacturers brazing metals. On a daily basis, we see examples of proper braze joint design that yield high-quality, strong joints and good parts. We also observe how improper design can produce weak joints, voids, and ultimately, scrap. ...

Capillarity Capillarity is defined as movement of a liquid along the surface of a solid caused by the attraction of molecules in the liquid to the molecules of the solid. Experiment Let's head to the lab, where we will conduct several experiment depicting successful capillary action, then ...

Brazing Methods Brazing methods range from torch brazing in open air to vacuum furnace brazing. Torch and induction brazing are the most common, using an Ag-Cu-Zn alloy to form joints. Oxides form on surfaces of base metals in open air, prohibiting the filler metal from wetting the assembly ...

Lucas-Milhaupt Global Brazing Solutions would like to introduce our new Sil-Fos 15 Rings designed for brazing copper tubular components for HVAC/R installation applications. The Sil-Fos rings use a calculated alloy volume for use with standard size copper tube from 1/4 inch to 1-1/8 inch. The ...

Flux Defined Flux, according to the American Welding Society (AWS), is "a material used to hinder or prevent the formation of oxides and other undesirable substances in molten metal and on solid-metal surfaces, and to dissolve or otherwise facilitate the removal of such substances." In other words, ...

What's the Difference? Welding joins base metals by melting and fusing them, usually adding a filler material. Fusion requires concentrated heat directly at the joint, and temperatures must exceed the melting point of the metals and filler. Welded joints are usually as strong as, or stronger than, ...

There are six fundamentals of brazing that every brazer should follow to ensure consistent and repeatable joint quality, strength, hermeticity, and reliability. We went over the first three in our previous blog post; here are the last three in detail: 4. Assemble for Brazing with Proper Fixturing ...

There are six fundamentals of brazing that every brazer should follow to ensure consistent and repeatable joint quality, strength, hermeticity, and reliability. The six fundamentals are: 1. Good Fit and Proper Clearance In everyday brazing, clearances are typically 0.001 to 0.005 in. radially to ...

Copper-to-Aluminum Joint Integrity HVAC manufacturers evaluating the use of aluminum components need to consider the best method for joining parts-such as evaporator and condenser coils-to secondary copper lines or assemblies. Several joining methods can be used, including: adhesives, mechanical ...