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.

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.

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.

28 November
Harris two-stage regulator
By Harris Products Group

Two-Stage Regulators

The basic function of a gas pressure regulator is to reduce unusable high pressure from the source to a lower usable delivery pressure. Two-stage regulators are designed to lower the high pressure in two stages. They require less readjustment and provide a more constant delivery pressure despite changes in inlet pressure. They are exceptionally well suited for high pressure cylinder applications.

31 October
Brazing joint with Harris alloy
By Harris Products Group

Factors to Consider When Choosing a Brazing Alloy

There are many factors that go into selecting a brazing alloy - base metal, joint clearance, and environment are just a few. Here are some things to consider when deciding which brazing alloy you should use.

31 August
Pipeline regulator with gas cutting torch
By Harris Products Group

What's the Difference between a Pipeline and Station Regulator?

There is little difference between a pipeline regulator and station regulator other than the inlet fitting. Learn the reasons why this change was implemented, and how it keeps you safe.

30 June
Applying brazing flux

Five misconceptions about flux

At The Harris Products Group, we sell a lot of brazing and soldering alloys. Over the years we’ve noticed some misunderstandings about the importance of flux in producing a quality brazed joint. This blog entry explores the five most common misconceptions about flux.

25 May
Harris cutting torch
By Harris Products Group

Which gas do you turn off first?

"Which gas do you turn off first?" We get this question a lot out in the field, and it's a good one. This blog entry outlines our recommendations for proper shut down of an oxy-fuel torch.

08 February
How Brazing Works

How Brazing Works - Capillary Action

One of brazing's attributes is the ability of melted filler metal to flow between parts to produce a strong, leak-proof connection. This effect, capillary action, enables braze penetration between two surfaces. It makes it possible to join pipe or tube in the horizontal position and, despite gravity, in the vertical "up" position.

15 January
Brazing paste flux brushed on pipe

Brazing Flux 101

A chemical flux is commonly used with many braze filler metals. Proper fluxing is important because the flux absorbs oxides formed during heating and promotes the flow of filler metal. Fluxes are chemical mixtures that contain varying chemical components. The mixture is blended to ensure smooth application and adherence.

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