What happens if you heat the nut on a bolt?
If you're talking about a nut on a bolt, heating the nut more than the bolt will cause the nut to enlarge relative to the bolt. This action is simple and straight-forward -- you should simply take care to concentrate the heat on the nut, not the bolt.
Does the space between bolts and nuts expand when heated?
My perception of the effect of heating is that not only do the bolt and the nut or block expand, but also the space between them expands as well, dont' forget about that. start after heat increase amt % inc space 0.001 0.001005 0.0000050 0.5000% slightly larger space between as well, easier to remove. :) It is expanding "by more" though.
Why does heat remove rust from a bolt?
In some other instances the reason heat works is that the bolt was applied with a threadlocker that requires heating to remove (if it comes out with no sign of rust, that's a pretty good bet) Many forms of rust contain "chemically bound water" and will lose that water (and shrink) when heated sufficiently.
How do you break a nut without damaging the threads?
A nut splitter will crack any no-go nut without damaging the threads of the bolt or stem that it's screwed onto. Just slip the ring over the nut and turn the tooth into the nut until it breaks. Find it at auto parts stores or online. A screw extractor could save your day.
How do you release a tight nut?
0:032:50How To Remove a Stuck Nut or Bolt - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd I'm here to help you with one of the most annoying. Problems a maintenance person can face aMoreAnd I'm here to help you with one of the most annoying. Problems a maintenance person can face a rusty stuck fast first get a wire brush and brush off any flaky rust that's in the way. Next hit the
Does heating up a bolt make it easier to remove?
Using a flame to loosen the bolt. Now heat the bolt and nut. Put the flame directly over the stuck part, or the part you can get to safely. Heat it for 30 seconds or so and it should free up easily.
Does heating metal help it loosen?
The short answer to the question regarding making metal weak is yes, however, only for some metals. The process of annealing can soften a variety of metals. Brass, steel, iron copper and silver can all be made weaker by heating the metal to a set temperature and cooling it slowly.
What does heat do to a nut?
If you're talking about a nut on a bolt, heating the nut more than the bolt will cause the nut to enlarge relative to the bolt. This action is simple and straight-forward -- you should simply take care to concentrate the heat on the nut, not the bolt.
How do you remove a nut that won't budge?
To loosen a nut or bolt that won't come off, start by spraying the connection with penetrating oil. Allow the oil to soak in for a time, then try loosening it with a wrench. To allow for more torque on the nut or bolt, slip a piece of metal pipe over the handle of the wrench to give you more leverage when turning it.
How do you free up a seized bolt?
You can use a clamp to get a good grip on the fastener's head and twist it hard so it can be freed from its position. Another method to loosen a rusted nut and bolt is to use a heat torch on low or moderate heat. Heat will allow the rusted nuts and screws to expand so that they can be loosened.
Does heating metal make it expand?
Metal expands when heated. Length, surface area and volume will increase with temperature. The scientific term for this is thermal expansion. The degree of thermal expansion varies with different types of metal.
How do you loosen a bolt with a torch?
4:596:20How to Remove Stuck Rusted Frozen Bolt by Heating With a TorchYouTubeStart of suggested clipEnd of suggested clipSo here I'm going to light the torch. And just use a little bit of a fuel flame. To just kind of preMoreSo here I'm going to light the torch. And just use a little bit of a fuel flame. To just kind of pre burn the area a little bit make sure there's no leftover penetrant or anything that might just
How do you loosen tight bolts without tools?
0:181:533 Ways To Take Off a Nut WITHOUT A Wrench! LIFE HACK! - YouTubeYouTubeStart of suggested clipEnd of suggested clipMethod to reach into your pocket. And pull up to quarters any large coin will work as well nextMoreMethod to reach into your pocket. And pull up to quarters any large coin will work as well next scrap the quarters. And place them on opposite sides of the hex nut. Now grip them with your index.
Is it easier to unscrew something hot or cold?
You could try heating the bolt and nut, which will expand them and might make them yield. A hair dryer should provide enough heat. Cold will contract them and might make it still easier to loosen.
Why do people like warm nuts?
And I'm not alone: Many recipes that call for nuts also call for toasting the nuts because it makes such a difference in the overall flavor of the dish. Toasting or lightly roasting nuts removes all the raw green, slightly astringent flavors that you taste when they are uncooked. This is especially true with walnuts.
Does heating a bolt harden it?
High-strength bolts are heat-treated to handle the intense tension and shear force caused by specific loads. Bolt heat-treatment processes differ to achieve specific outcomes. Some heat-treatment processes harden the bolt while others soften it.
Does heating a bolt harden it?
High-strength bolts are heat-treated to handle the intense tension and shear force caused by specific loads. Bolt heat-treatment processes differ to achieve specific outcomes. Some heat-treatment processes harden the bolt while others soften it.
Should the Assembly be heated or cooled to make it easier to remove the nut?
Apply heat. Metal expands slightly when hot, which may be enough to crack the nut free.
Why is it important that we heat the nut quickly when attempting to remove a seized or tight nut from a stud or bolt?
The heat will pull the wax into the gaps between the bolt and nut threads and allow for easier turning.
Does heating metal make it expand?
Metal expands when heated. Length, surface area and volume will increase with temperature. The scientific term for this is thermal expansion. The degree of thermal expansion varies with different types of metal.
Why does a bolt cool faster than a nut?
Air however is a much better insulator, so I suspect that the bolt cools faster than the nut because it makes contact with more metal, which acts as a radiator.
What happens to a bolt when it cools?
As the bolt cools, it contracts. The contraction, however, is not constrained. This means that the bolt can shrink in all directions, making the bolt slightly smaller.
Why does a bolt get stuck in the first place?
The actual reason this usually works is that rust is significantly larger than the steel it's rusted from, which is why the bolt is stuck in the first place. In some other instances the reason heat works is that the bolt was applied with a threadlocker that requires heating to remove (if it comes out with no sign of rust, that's a pretty good bet)
Why can't a bolt expand inside a hole?
When the bolt is heated, it expands. Since the shaft of the bolt is constrained, it can't expand inside the hole.
What direction does a bolt expand?
The bolt expands in the direction of the green arrow, but cannot expand in the direction of the red arrows. As the bolt cools, it contracts. The contraction, however, is not constrained. This means that the bolt can shrink in all directions, making the bolt slightly smaller.
How to get a stuck bolt to release?
One other way to get a stuck bolt to release is to shock it by hitting it sharply. Generally this is something you do something large like a valve but I think the underlying problem is the same. For rust, I would expect that this can shatter the brittle structure of the oxide. Another factor is that there are two types of friction. There's static friction and kinetic friction. Consider a heavy (filled) cardboard box on a floor. If you try to slide it, it will initially be 'stuck'. Once the box starts moving, it slides much more easily. This is the same reason it's bad to lock up the brakes on a car. Once the rubber starts sliding, the friction is significantly reduced.
What breaks rust bonds?
The heat and expansion of the metal simply served to break those bonds. It has nothing to do with thermodynamics or any other science-y nonsense. It is the simple mechanical action of the expanding metal breaking the rust.
How to loosen a bolt?
Using a flame to loosen the bolt. Matt Wright. Now heat the bolt and nut. Put the flame directly over the stuck part, or the part you can get to safely. Heat it for 30 seconds or so and it should free up easily. If it doesn't, repeat the process to see if that helps. Repeated heating and cooling sometimes does the trick.
How to get a stuck joint out of a torch?
Before you light your torch, spray the stuck joint with PB Blaster penetrating oil. Give it a few minutes to work before you apply heat.
How to adjust propane torch?
A nice, clean propane flame. Once your torch is lit, adjust the flame using the adjustment dial on the torch unit. Turn it counterclockwise for a bigger flame, clockwise for smaller. You don't need a huge flame for the job, so adjust it until you have a small, clean flame.
Can you remove a bolt that is stuck?
Some bolts just won't budge. They are stuck, seized, stubborn, rusted, corroded, and otherwise impossible to remove. There are a number of oils and penetrants that can really help, and a good soaking should always be your first line of attack. If those actions fail, however, it may be time to break out the propane torch and use some heat.
Can you use a propane torch to remove a stuck bolt?
You can also use a butane torch, but it's a little cheaper and easier to go with the propane.
