Merry Christmas from Hotfoil-EHS


Merry Christmas from Hotfoil-EHS

Thermocouple Attachment Units Save Time and Money

Thermocouple Attachment Units

Always find yourself buying pre-made thermocouples? Do you have a hard time identifying the quick and easy ways to go about attaching studs or pins to a target structure? It sounds like you need a thermocouple attachment unit. The TAU will save time and money and allow you the control to fabricate these products when and where you need them.

The Hotfoil-EHS Thermocouple Attachment Unit (TAU) allows the capacitive discharge method to connect thermocouples to a workpiece directly. 

This productivity tool offers high integrity welded bonds that provides secure and precise temperature control and documentation by reducing the possibility of costly rework due to thermocouples breaking off during the heat treatment process. Thermocouple attachment units offer a very convenient and economical method of forming and attaching thermocouple sensing wires, studs, and pins where and when you need them. 

A unique automatic operation function of the Hotfoil-EHS TAU overcomes difficulties associated with manual attachment units that require both hands to work.  When operating at high levels or inaccessible areas, Hotfoil-EHS's TAU needs only one hand to use, a significant safety feature.


Pre and Post Weld Heat Treatment

Pre Post Heat Treatment

Heat treatment in any large-scale welding process (such as pipeline welding, shipbuilding, boiler manufacturing) is critical to a weld's efficiency and, therefore, essential in a structure's performance, and therefore its importance can never be overlooked. 

An examination of industrial code or a consultation with a welding specialist is imperative if in doubt. A review of the welding code is the first determinant of whether preheating is required. The welding code carefully defines the minimum preheat, the temperature, the soak time, and the welding method. Many requirements, all obtained from years of rigorously checked data, are recognized by welding codes. This data is well supported by several sources, including metallurgical research, chemical material properties, and radiographic analysis. 

Welding heat treatment in its simplest form is the process of heating the base metal (parts to being welded) before welding to the desired temperature and then allowing it to cool at a given rate under regulated conditions. The exact temperature the component needs to achieve (before welding) is called the "preheat temperature." 

There are several main reasons why preheating before welding is necessary. A preheated part cools more slowly, which slows down the welded part's overall cooling rate. This slow cooling strengthens the metallurgy (crystalline structure), which makes it less susceptible to cracking. Hydrogen that could be present immediately after a weld is therefore released more effectively, reducing cracking risk. Preheating at the weld joint and surrounding metal often mitigates stress from the shrinkage. It is preheating that decreases the risk of fractures due to brittleness during processing. 

Electric preheaters for welding, known as "ceramic mat heaters," are durable and versatile heating components built to fit evenly around the weld and surrounding area. Ceramic mat heaters are temperature controlled by a power console that uses thermocouples and electronic controllers to regulate the preheat temperature profile, track it, and record the temperature data. 

Another less favored method for heating the target piece is with a torch or open flame, but this method has apparent safety issues and controllability problems. Also used are heat treat furnaces, but these usually involve off-site transport of the target item. 

For safety, portability, and controllability, induction heaters give an appealing alternative. Induction heating is endorsed because, instead of open flames or external electrical components, it uses molecular excitation as its source of heat. Induction heating operates very rapidly, and there are far fewer worries about component contamination since there is no interaction with the target item. When very high temperatures and uniform control is required, many industrial processes use induction heating.

It is critically important to review and discuss your heat treating requirements with an expert before welding. Don't risk safety or waste time and money by "winging it" when it comes to heat treatment.


Happy Labor Day from Hotfoil-EHS

Happy Labor Day

 A sincere thanks to all the hard working people who make the US economy run each and every day. 

COVID-19 Update

March 20, 2020

We at Hotfoil-EHS continue to navigate the rapidly changing COVID-19 pandemic. We are closely monitoring the situation and following the guidance available through the Centers for Disease Control (CDC), the World Health Organization (WHO) and state and regional public health authorities. We are committed to the safety of our customers, business partners, and employees.

Our manufacturing locations remain open and our supply chain remains intact. We are maintaining a limited staff in our New Jersey, Texas, and Tennessee facilities to support critical functions including shipping/receiving, accounting, and IT.
Additionally, we have implemented the following:
  • Restricting visitor access to all facility locations.
  • Increased frequency of sanitizing facilities and work spaces.
  • Requiring regular hand washing and sanitizing.
  • Using technology where possible to replace in-person meetings.
We will update this statement as the situation changes.

We thank you for your continued business and support. Please stay safe and be well.

New Hotfoil-EHS Product Catalogs

There are 2 updated Hotfoil-EHS catalogs available for download now.

A revised and updated Hotfoil product catalog can be downloaded here. It includes information about Type HB Hopper Heating Modules,Type FRP Heating Panels, Type ELP Heating Panels,Type GA Heating Blankets, Type HSR / HSRX Silicone Rubber Heaters, Type PCW and SRC Heating Cable, Type MI Metal Sheathed Heating Cable, Tank Heating Controls, Hopper and Chute Heater Controls, and Heat Control Systems for Hazardous Areas.

A revised and updated EHS product catalog can be downloaded here. It includes information about Power Consoles, Fusion 45 Induction Console, Ice Star Heat Treatment Control System, Ceramic Mat Heaters, Rope Heaters, 4-Banks and Accessories, Temperature Recorders, Pinwelders & Thermocouple Attachment Units and Accessories, Brinell Tester & Poldi Hardness Testers, Triple Cable Sets, Splitters, Insulation and Accessories, T/C Wire, Banding, Twistlocks and Accessories, EHS Gas Trains, Furnace Fabrication & Capabilities, and Custom Generator Trucks / Mobile Heat Treatment.

For more information, contact Hotfoil-EHS by calling 609-588-0900 or visiting their web site at