12 October
Brazing with flux image
By Harris Products Group

Why is flux required when brazing brass and not required with copper to copper?

A fluxing agent (or a controlled atmosphere as found in furnace brazing) is required for all brazing and soldering applications. The purpose of the flux is to remove oxides from the base material and to prevent oxidation during the heating process, thus promoting the free flow of the brazing filler metal.

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22 May
gas welding

What is the difference between gas welding and braze welding?

Gas welding and braze welding both require skill, patience and an oxy-fuel torch. There are several differences, however, between the two applications that require different techniques and materials.

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25 April
Harris single stage 25GX gas regulator
By Harris Products Group

With a single stage regulator the delivery pressure rises as inlet pressure decreases - why?

Gas regulators are designed to reduce pressure to a usable volume for a specific application. What happens when gas flows into a single stage regulator?

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18 April
TIG welding
By Harris Products Group

What is the difference between RG45 & RG60 welding wire?

Both are solid wire oxyfuel welding rods, but each has its own distinct characteristics.

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03 April
Production brazing

What is solidus and liquidus and why is it important to brazing?

If you look at a list of brazing filler metals you’ll note many compositions and a variety of melting temperatures. The melting characteristics of brazing filler metal are an important aspect in filler metal selection. Here's a brief outline of how alloys melt and the way to use this information to make the best selection.

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24 March
Cutting metal with an oxy-fuel torch
By Harris Products Group

Can titanium be cut with an oxy-fuel torch?

Titanium can be cut with an oxy-fuel torch as long as you take certain precautions to protect yourself and your work area.

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20 February
CGA connections on gas cylinders
By Harris Products Group

Why do cylinder valves have different thread types?

It is required in the U.S. by OSHA and the Compressed Gas Association (CGA) that cylinder valves be designed differently to prevent interchangeability with gas systems and equipment. This is one of the most important safety practices in the gas industry.

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10 February
Brazing aluminum
By Harris Products Group

What metals can be brazed?

Many different types of metals can be brazed. Copper, and copper based materials like brass and bronze, are typically brazed with copper phosphorus silver alloys also known as American Welding Society (AWS) BCuP filler metals.

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25 January
Cutting with a Harris torch
By Harris Products Group

Will a Check Valve stop a Flashback?

A flashback is an uncontrolled flame that recesses back into your oxy-fuel gas equipment, upstream of the location where the gas is designed to mix. In order to have a flashback you must have oxygen and fuel mixed together.

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29 December
Machine cutting torches
By Harris Products Group

How to Use a Cutting Torch Tip Chart

Next to the manufacturer's operation manual and safety guidelines, the cutting tip chart is the next important printed advice for having a safe, great hand cutting torch experience. If you are having trouble lighting a torch, correctly adjusting the flame or the torch just will not stay lit, the cutting tip chart contains the most likely answers and is a good starting point.

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