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Steel is a common and very durable alloy. Although tool steel is usually hardened, you can still make it harder to limit wear. Hardened steel keeps the blade from dulling and the tool from bending or breaking. By simply heating and cooling, you can greatly increase the strength of steel!
Steps
Heating steel
- A large flame produces a lower temperature than a small flame.
- The torch can only heat a small area. For large objects, you must use the forging tip to heat the entire object.
Safety measures
Always wear gloves and goggles when using a propane torch.
Before using the torch, be sure to read the instructions carefully for safe operation.
- Wear thick gloves to avoid burns.
- Work on metal or steel surfaces, such as anvil surfaces, to avoid fire hazards.
- The actual temperature of the steel depends on the carbon content inside. The higher the carbon content, the longer the heating time.
- Another way to check if the steel is hot enough is to see if the magnet attracts the steel. If the magnet doesn’t attract, you can take the steel out of the heat. [4] X Research Sources
Metal cooling
- This step should be completed before heating the steel, as the steel needs to be cooled immediately after removal from the heat source. [5] X Research Sources
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- Vegetable oils have a higher boiling point so hot steel takes longer to cool, and therefore the risk of cracking is lower. However, oil can spill and cause a fire if you dip the steel in too quickly.
- The rapid cooling process will cause the alloy inside to bond together.
- Put on thick gloves and a mask before hardening to prevent water or oil from splashing into your hands.
- Have a Class B fire extinguisher nearby as a precaution.
Hardened steel will be harder, but more brittle. Don’t throw or try to bend the steel after I’m done.
I steel in the oven
- Use a mini oven if it is possible to fit the item inside. That way you can still use the oven in the evening of the same day.
If you need to use a torch then focus the flame on the area that needs me. Continue heating the steel until you see a blue color appear on the metal. This is an indication that the steel has been tempered.
- If you heat steel with a torch, place the object to be quenched on an anvil or another steel surface to conduct heat. [13] X Research Source
Warning
- Do not touch metal with bare hands as you could get serious burns.
- Prepare a fire extinguisher near the workplace to prevent fires.
- Wear safety glasses and gloves while working with hot metal.
Things you need
- Torch
- Lighter
- Steel objects
- Metal clip
- Safety glasses
- Glove
- Heat-resistant barrel
- Vegetable oil or water?
- Wiper
- Griller
This article is co-authored by a team of editors and trained researchers who confirm the accuracy and completeness of the article.
The wikiHow Content Management team carefully monitors the work of editors to ensure that every article is up to a high standard of quality.
There are 10 references cited in this article that you can view at the bottom of the page.
This article has been viewed 23,158 times.
Steel is a common and very durable alloy. Although tool steel is usually hardened, you can still make it harder to limit wear. Hardened steel keeps the blade from dulling and the tool from bending or breaking. By simply heating and cooling, you can greatly increase the strength of steel!
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