Forming Your Own Heat Shields? Learn the Differences Between Embossed Sheets and Flat Sheets.

We’re going to switch gears this week and discuss a topic that is near and dear to some of our readers – thermal management and heat shielding. Sometimes, utilizing a proper construction, your gasket can provide what you need in an application as far as thermal management is concerned. However, other times you will need a formed heat shield.

Similar to the variety you find in gasket materials, you will see that you have choices in what you select for your thermal management/heat shielding needs. One of the top questions that we get asked is “what is the benefit of using an embossed sheet over a flat sheet?” If this is the very reason that you stumbled upon this blog, you’re in luck. Keep reading.

 

Why Embossed?

1. Material content – The embossment structure provides 4x the stiffness vs. a flat sheet. This allows a thinner metal to be used to retain the same stiffness, allowing for lighter weight and lower material cost.

2. Structure – The embossment feature provides depth to a 2-dimensional design. As a single-layer, it provides a stand-off from touching surfaces. As a multiple-layer, it provides for an air-gap to prevent layers from full contact.

3. Design – Embossment provides unlimited design potential. The embossment pattern allows for easier forming than with flat sheets as some forming has already been started across the sheet. It also allows for a smoother transition in forming shapes as the rough corners and problem areas are minimized.

4. Noise reduction – Embossed is quieter than a flat metal shield. The 3-dimensional structure of the embossed sheet helps to disrupt sound waves that are reflected and transmitted. It also provides reduced vibration and reverberation as found with flat sheet designs.

5. Appearance – Embossment provides a more uniform appearance across the shield which is more appealing than a flat piece with rough corners. This provides a more professional look.

 

Take a Look

If you have any questions about embossed sheets and the advantages of working with them, please don’t hesitate to talk to a trusted supplier to learn more. Embossed metal products are designed for forming into heat shields using production tooling or hand-fabrication. Individually sold sheets can be the right solution for you to build a custom formed heat shield made exactly for your application that will provide performance to match even the best production designs.

Until next time!

embossed-sheet-comparison

If embossed metal is what you have been looking for, MTI offers these sheet products in aluminum and stainless steel material options so that prototypes and small quantity pieces can be easily built by hand for validation and product development. We’ll be glad to work with you on this development and can carry it through to a production part as needed.

Thinking of Using a Gasket To Insulate Against Heat? Here Are 4 Considerations.

Have you ever been in a situation where you are working in a high heat application and you need to figure out a way to insulate against the heat? One option is to look at some heat shielding. A shield can be designed to fit exactly where you need it to go, and away you go. Another option is to put your gasket to work. This is a viable option if you don’t have the space or the need for an actual heat shield.

Gasket materials that have insulative properties can be a perfect fit for your application in so many ways. Keep reading for a list of considerations if you are trying to decide if this would be the answer to your problem.

So You Think You Want To Insulate With a Gasket?

Whether you have heard of using a gasket for insulation purposes or not, here are 4 things you need to consider.

1. Do you need protection? 

You may have a sensitive component, such as an actuator, on one side of the gasket that needs protection from the hot flange on the other side.

2. Does your application have a lot of heat soak? 

Cooling systems work fine, but once the engine is off, it’s off to the races with heat soak, where cooled components can heat up. Once the cooling system is no longer running, nothing is regulating the temperatures, which over time, can cause damage in the application. It is important to identify the proper materials in the designs to tolerate the increased temperature conditions that may occur in some circumstances.

3. Do you plan to use a metal gasket? 

These have successfully sealed many newer engines, but also transfer heat from one area to another, effectively making areas hotter. If you want to use a gasket for insulation, you’ll need to stay away from metal. The best gasket materials to use for an insulative effect are metal-reinforced composite laminates.

4. Cost 

Sometimes a heat shield and gasket can be one in the same, thus reducing cost and installation issues. (For example, our HT337 can function as both the gasket and heat shield when formed to do so – and it is quite successful in the applications!)

It Works!

Over the years, we have recommended materials to many of our customers that are looking for insulative properties in their gaskets, and they have had much success with it. If you are in a similar situation, talk to a trusted gasket material supplier to see if what they have to offer will meet your requirements. If not, find someone who does, because it can be done.

Sometimes, insulation is just as important as any other material property!

Hi-Tex Comparison