Full Answer
What is heat treat foil used for?
Keith Stainless Steel Heat Treat Foil is an annealed stainless steel used in the heat treating of tool steel parts. The wrap eliminates the need for Ni-Chrome, box packing and the use of sawdust or other carbonaceous materials. No special controlled atmosphere furnaces are required to use the foil.
What are the benefits of using foil wrap for packaging?
The wrap eliminates the need for Ni-Chrome, box packing and the use of sawdust or other carbonaceous materials. No special controlled atmosphere furnaces are required to use the foil.
Can you use foil tool wrap in a furnace?
Stainless steel foil tool wrap protects air-hardening tool steel parts from scale and oxide buildup during heat treating in ordinary furnaces. By using foil tool wrap in your conventional furnace, one realizes nearly the same benefits of vacuum or controlled atmosphere furnaces but at a fraction of the cost.
What is stainless steel foil used for?
Stainless Steel Foil. Keith Stainless Steel Heat Treat Foil is an annealed stainless steel used in the heat treating of tool steel parts. The wrap eliminates the need for Ni-Chrome, box packing and the use of sawdust or other carbonaceous materials. No special controlled atmosphere furnaces are required to use the foil.
What is heat treating foil?
It is a special Stainless Steel alloy foil, commonly used for tool wrap applications. The stainless steel tool wrap provides a quick and low-cost method of protecting the surface of tools, dies, and other parts during the hardening process by preventing decarburisation (scaling).
What happens to steel during heat treatment?
Tempering martensitic steel—i.e., raising its temperature to a point such as 400° C and holding it for a time—decreases the hardness and brittleness and produces a strong and tough steel.
How do you heat treat metal to make it stronger?
Prepare the tools for the process. ... Use a forge or small ceramic oven if possible. ... Put on heavy gloves and safety glasses before heating the steel. ... Immerse the metal into the oil when it glows a deep red. ... Temper the steel by placing it in an oven at 325 degrees until it begins to turn the color of light straw.More items...
What is stainless steel tool wrap used for?
Stainless Steel Tool Wrap is typically used in heat treating applications to eliminate scale and discoloration of parts. It also protects parts from oxide buildup.
Why do we temper steel?
Tempering is sometimes used on normalized steels to further soften it, increasing the malleability and machinability for easier metalworking. Tempering may also be used on welded steel, to relieve some of the stresses and excess hardness created in the heat affected zone around the weld.
Why does steel need to be protected from heat?
However, heating causes structural steel to loose it's load bearing capacity and will cause steel to expand. These effects play a significant role in the failure of structural steel buildings when exposed to fire.
How do you harden steel after heating?
Steels are heated to their appropriate hardening temperature {usually between 800-900°C), held at temperature, then "quenched" (rapidly cooled), often in oil or water. This is followed by tempering (a soak at a lower temperature) which develops the final mechanical properties and relieves stresses.
How do you make steel more flexible?
Different techniques are used to tune steel so that it suits the various situations where its flexibility is needed. Some of the common procedures include annealing, tempering, hardening as well as adjusting the chemical composition of steel.
What are the five basic heat treatment process?
Heat treatment techniques include annealing, case hardening, precipitation strengthening, tempering, carburizing, normalizing and quenching.
How do you wrap stainless steel?
0:066:46DIY Peel N Stick Stainless Steel!! Laci Jane DIY - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd I'm gonna add two inches to each side. And to the bottom. I got enough to cover my refrigerator.MoreAnd I'm gonna add two inches to each side. And to the bottom. I got enough to cover my refrigerator. My stove and my dishwasher.
What is Tool wrap?
What is Tool Wrap? The Tool Wrap is a stainless steel . 002 thick foil. You can use it to protect the surface of your tools and dies during hardening. It also keeps your tools from decarburization (scaling).
Why use foil wrap on stainless steel?
Stainless foil wrap was designed to reduce scale on steel during the prolonged heat at high temps that stainless steel and other high alloy steel. That scaling is tough stuff and the foil helps. What is the obsession with trying to use it on every steel out there.
Do you need foil wrap for oil hardening?
You don't need foil wrap on oil hardening steels and especially don't want to with shallow hardening ones. If you're using it on them, then you have to choose to either quench with it in the packet (a pretty large risk of uneven cooling with blades that thin) or removing it before quenching, which will likely keep you from getting it quenched under the nose.#N#You can put a small bit of charcoal on a piece of foil in the oven to burn off and reduce the O2 in the atmosphere if you want to reduce decarb, but it's not really a problem on 10xx steels, as Delbert already said.
What is stainless steel foil?
Stainless Steel Tool Wrap is typically .002” thick type 309 or Type 321 Stainless Steel foil used to wrap metal tools, dies, and other parts during high-temperature heat-treating to achieve a hardened temper. The part to be heat-treated is placed in an envelope formed by folding a foil sheet in half and sealing the open ends to lock out the surrounding air. If the seal is not airtight, excess oxygen can be drawn in and cause a loss of carbon on the surface of the part, referred to as “decarburization”, which prevents the outer surface from obtaining the desired hardness and could potentially causing scaling on the part.
What is the temperature of stainless steel tool wrap?
The standard Stainless Steel Tool Wrap is Type 321, which will work in temperatures up to 2000 degrees Fahrenheit.
What happens if a seal is not airtight?
If the seal is not airtight, excess oxygen can be drawn in and cause a loss of carbon on the surface of the part, referred to as “ decarburization”, which prevents the outer surface from obtaining the desired hardness and could potentially causing scaling on the part.
Why is it important to wear protective gloves when handling foil?
It is important to always wear protective gloves when handling the foil to avoid cuts from the sharp edges and burns from the foil after heating. This material is extremely thin and can be dangerous when handled.
How wide are comet metal rolls?
Comet Metals rolls are generally in widths of 24” wide, with 36” and 39.5” widths available when required. Standard roll lengths are approximately 100 feet, but can also be longer or shorter as needed.
Why put paper in an envelope?
Some guys put a piece of paper inside the envelope to burn up the oxygen so the blade steel does not carborize. I don't see much advantage to this. Just wrap it tight and there won't be any oxygen to speak of. Ideally, the envelope will tighten around the blade making solid contact.
How thick should aluminum plates be for oil quench?
Plate Quenching: Get scrap aluminum plates at least 1" thick. Make it a couple inches longer and at least 4" wider than your knives.
Heat treating without foil?
Is there any negative side effects of heat treating air hardening tool steels without wraping them other than scale?A2 and A6 specifically Sent from my SM-G973U using Tapatalk
Roach poison
I use powdered boric acid, sold as roach and ant killer. Heat the part up just a bit then dip it into the powder, which will stick to the hot part. When you continue to heat the part the boric acid turns into a thick liquid that coats the part. A water quench will cause the coating to crack and completely fall off.
