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Proper application of heat is a vital factor in brazing success. This technical video will show you three types of flames that can be produced by an oxy-acetylene torch: Neutral Oxidizing Reducing We'll explore the differences between these flames. Then, we'll discuss how each flame is used and the ...

Lucas-Milhaupt has studied the use of preformed rings vs. hand-fed alloy in prefabrication of refrigeration units. Let’s look at preformed rings, the advantages of using rings, and the quality of braze joints they produce. Figure 1. Cross-section, Pre-placed Ring Inside Tube-to-tube Joint Preformed ...

Flux is a chemical compound applied to joint surfaces before brazing. The addition of metallic boron changes white flux to black. This new video clip will show you the difference between these materials. We will also demonstrate several uses for black flux. For example, in a high-temperature ...

When it comes to safely brazing with oxy-acetylene torches, let's look at two important aspects: safety equipment, plus procedures for safe operation. This is serious business: arc rays and sparks can result in loss of sight, fume inhalation can lead to lung damage, and other accidents can cause ...

In about four minutes, this technical video will give you an up-close, step-by-step view of successful copper-to-copper brazing. You will learn these important steps to achieving strong, reliable joints: 1. Clean tubing and fitting, removing burrs and contaminants 2. Insert the tube, with a ...

The Right Flux for the Job High-temperature fluxes are used with brazing filler materials having melting temperatures of 1600°F (870°C) - 2000°F (1100°C), or 2200°F (1205°C) for boron-modified filler. These fluxes are useful for applications where higher-temperature alloys are needed for strength, ...

Flux is a chemical compound applied to the joint surfaces before brazing. Watch our new technical video for an in-depth look at the four functions of flux: 1. Protect from oxygen 2. Dissolve & absorb oxides 3. Help filler flow 4. Indicate temperature Then, we'll show you how Handy® Flux appears ...

How Stop-Off Works To understanding how Stop-Off works, let's review the brazing process. At Lucas Milhaupt, we preach six fundamentals of brazing: 1. Good fit & clearance 2. Clean metals 3. Uniform fluxing 4. Proper assembly 5. Brazing technique 6. Post-braze cleaning Let's focus on Step 2 - ...

In about four minutes, this new technical video from Lucas-Milhaupt will walk you step-by-step through this brazing process. We'll address procedures and alloy options that will help you successfully braze copper and aluminum components. Watch for the definition of a perfect joint gap! We'll share ...

Interfacial Corrosion The situation: When brazing stainless steel with flux, subject to a damp environment, you notice rust-like spots around the periphery of the braze metal. Rapid corrosion may begin within two days or even as soon as two hours. The brazing filler metal may eventually peel away ...