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Jans Metal Works is a full time service metal fabrication center, that has been providing expert service in the east valley for over 35 years.
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Brazing Machines

Brazing is a process similar to soldering or welding – a filler metal is used to join two pieces of metal together. The metal is heated above its melting point and flows over the two pieces of base metal and then cooled to join the pieces together. This is a better method than welding because it does not heat the joint pieces and reduces distortion and creates a cleaner joint. Jan’s Metal Works has created brazing machines to complete the brazing process using a method called resistance brazing. Resistance brazing means that the device has to make contact with the two pieces of metal that are going to be joined in order to pull them together and then silver solder them. There is also a brazing method called induction brazing. Induction brazing does not have to make contact with the metal pieces that are going to be joined together because the metal is heated by an electrical current produced by the brazing machine. Induction brazing is more expensive than resistance brazing while both provide a similar result.

Jan’s brazing machines are used for making brazed solder connections for electrical rewinds. They are intended for use in large electric motors/transformers to connect the new winding together once it has been rewound. The standard way to complete this task is to use a torch and weld the connection. However, the torch takes more time to heat up the metal and can distort it can burn things around it. The brazing machine works much faster due to better heat conduction and will not ruin the copper. Jan’s can custom build brazing machines for different applications as well.

KVA brazing machines come in different sizes based on the size of the joining metal pieces that will be used in the project – a larger copper bar will mean that a bigger machine will be required (please see the machine descriptions below). There are four varieties of KVA machines each with different uses and capabilities. The bottom of every KVA is a tank that houses coolant that is pumped through the leads and the tongs to keep them cool and prevent overheating. Some KVAs have air cooled transformers and others use coolant, depending on the size of the machine. All of the machines are portable and can be used for various applications such as repairing transformers, wind generators, and subway car motors.

(12KVA)
12kva
  The 12KVA is the smallest brazing machine Jan’s currently produces; however, if the job requires a smaller machine one can be custom built. The machine features an air cooled transformer, though the leads and tongs are cooled with coolant from the base. The 12KVA is typically used for connections in AC motors or smaller connections in larger motors. It is capable of brazing copper bars 3/16” x 1”.  

(70KVA)
mark2
  The 70KVA, also known as the Mark 2, is larger than the 12KVA and thus is capable of larger connections. It was designed for silver soldering rewind connections for traction motors found in trains and locomotives. The machine has one coolant pump that circulates coolant from the base through the transformer, leads, and tongs to keep them cool. It is capable of soldering two pieces of copper 3/8” x 2”.  

(100KVA)
100 KVA
  The 100KVA larger than the 70KVA and thus is capable of larger connections. The machine has two coolant pumps that circulate coolant from the base through the transformer, leads, and tongs to keep them cool. It is capable of soldering two pieces of copper 1/2” x 2”.  

(140KVA)
140 KVA140 KVA
  The 140KVA larger than the 100KVA and thus is capable of larger connections. The machine has four coolant pumps that circulate coolant from the base through the transformer, leads, and tongs to keep them cool. It is capable of soldering two pieces of copper 1/2” x 4”.  

(Tongs)
Brazing Tongsbrazing tongs
Thin Tip TongsPistol Grip 90
140 KVA Tongs
  Each brazing machine comes with copper tongs – they clamp onto the pieces of copper that are going to be solder in order to pull them together. The standard are straight tongs but there are several other options available including 45 degree, 90 degree, parallel opening, and pistol grip tongs. Tongs can also be custom made when needed.  
 
Quick Connectors
for changing tongs. These Allow the tongs to be changed in seconds without dissasembling the tongs.
 
Quick Disconnect

braze video
Click on the image to the left to view the video.
Equipment:
Machine
12 KVA Brazer
Mark II Brazer 70KVA
240V, 60HZ
550V, 60HZ
More Available in Pricing Guide. Please Contact Jans For More Information
100KVA Brazer, 440V
Parts available upon request.
Parts Machine: 12KVA Machine 70KVA Machine 100KVA
Price Each      
Tongs, Straight J5197 J5181 J5081
Tongs, 45 Degree   J5181.4 J5081.4
Tongs, 90 Degree   J5181.9 J5081.9
More Available in Pricing Guide.      
Are you having any troubles with your brazing machine? We hope not and we have assistance available during regular business hours at (480) 833-7305. Or you can attempt to trouble shoot the machine on your own anytime with our free troubleshooting guide.
Troubleshooting Guide

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