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Home » Keywords: » brazing

Items Tagged with 'brazing'

ARTICLES

Dan Herring

Don't Throw Away Your Diffusion-Pump Oil (Fluid)!

Dan Kay
Dan Kay
May 9, 2023
No Comments

Brazing-shop personnel sometimes make a big mistake by discarding the diffusion-pump “oil” from their vacuum furnaces right along with all the other containers of used oil from their shop operations, including all the oils from mechanical pumps or lubricants from forming/machining operations. This is a BIG mistake!


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graph 1
Technical Talk

Vacuum Furnace Burnout Cycles for Aluminum Brazing

Dan Kay
Dan Kay
April 17, 2023
No Comments

Someone recently suggested to their aluminum-brazing client that they should conduct a high-temperature burnout cycle in their vacuum furnace by “heating the furnace to 1600°F to ensure that all the oxides are removed.


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Industrial Heating Industry News
Equipment News

Furnaces to be Used for Brazing Aluminum Heat Exchangers

April 7, 2023
No Comments

The SECO/WARWICK Group will deliver two universal batch CAB furnaces and a CAB continuous line to Australia’s PWR Advanced Cooling Technology. The furnaces will be used for brazing aluminum heat exchangers. The three solutions on order will go to two continents, Australia and North America, both owned and operated by PWR Advanced Cooling Technology, which specializes in the production of heat exchangers. The current contract is the third purchase of technologies from SECO/WARWICK designed to meet the production challenges related to the brazing process.


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Dan Herring

Correctly Applying Brazing Filler Metal (part 3)

Dan Kay
Dan Kay
April 6, 2023
No Comments

Learn how to correctly apply brazing filler metal in part 3 of Dan Kay's latest blog series.


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Dan Herring

Correctly Applying Brazing Filler Metal (part 2)

Dan Kay
Dan Kay
March 21, 2023
No Comments

Figure 3 shows a cross-section photo of a round electrical contact that was brazed onto a flat surface, where the applied BFM completely surrounded the disc-shaped part that was to be brazed to the substrate below it. When the BFM melted and tried to flow into the joint, it could not do so since the air and other contaminants inside the joint could not escape to the outside because the “wall of liquid BFM” around the outside of the joint was blocking it. Thus, a braze fillet was formed around the outside of the joint, but the BFM could not flow into the joint.


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Dan Herring

Correctly Applying Brazing Filler Metal (part 1)

Dan Kay
Dan Kay
March 2, 2023
No Comments

Brazing filler metal (BFM) is available in a variety of different forms, shapes and sizes, such as wire, rod, paste, sheet, foil, preforms and cladding. BFMs are often applied externally, but some of these BFM forms can be applied internally (i.e., inside the component assembly to be brazed like when foil, cladding and solid preform rings are used).


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Dan Herring

Heat-Treating-of-Fixtures Business

Dan Kay
Dan Kay
February 9, 2023
No Comments

Are you in the brazing business or in the heat-treating-of-fixtures business? Many brazing companies claim they are a brazing job shop doing lots of brazing for their clients, when in actuality they are only doing the brazing work for their clients in order to generate some income to pay for their real business (i.e., heat treating of furnace fixtures). Does that seem strange? Let’s take a deeper look at this.


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Figure one
Technical Talk

Apply BFM to Only One Side of a Joint Being Brazed

Dan Kay
Dan Kay
January 18, 2023
No Comments

Brazing filler metal (BFM) is available in a variety of different forms, shapes and sizes, such as wire, rod, paste, sheet, foil, preforms and cladding. 


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Dan Herring

Filler Metal Makes Braze Paste (part 4)

Dan Kay
Dan Kay
January 17, 2023
No Comments

Here is the conclusion of Dan Kay's blog series "Filler Metal Makes Braze Paste."


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Dan Herring

Filler Metal Makes Braze Paste (part 3)

Dan Kay
Dan Kay
December 20, 2022
No Comments

Notice in Table 2 that there are strict requirements for the amount of oversized and undersized powder particles in each mesh size group. For example, to be classified as a -140C powder (“C” stands for “course”), the screened powder can only have a maximum of 20% -325 mesh powder. Thus, 80% of powder classified as -140C-mesh must be -140 mesh/+325 mesh, meaning it should all go through the 140-mesh screen, but 80% or more must sit on top of, and not go through, a 325-mesh screen. 


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More Articles Tagged with 'brazing'
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