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Acetylene Heating
Checkout Ebay Auctions For The Cheapest Prices
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 Victor 8-MFTA Rosebud Heating Tip 0330-0528 Acetylene  US $69.00
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 HARRIS J-63-2 ACETYLENE HEAT TIP J1800720 J632 NIB US $52.00
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 Jewelers Torch Heating tip / Rosebud tip for Acetylene US $19.50
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 VICTOR ( 6-TEMFA ) ACETYLENE HEATING TIP US $12.00
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 VICTOR ( 5-TEMFA ) ACETYLENE HEATING TIP US $12.00
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 Smith Little Torch Acetylene Mapp Heating Tip #13-662 US $29.75
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 Smith Acetylene Heating Tip Series Sc83 US $37.89
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 Victor 15-A-11 Rosebud Torch Handle Body Oxygen Acetylene Weld Heat 14 Inches US $49.00
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 NEW! (2) ACETYLENE TORCH HEAT BRAZING TIPS #5 US $19.99
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 HARRIS 62-3 Straight Cutting Heating Torch & Tip Oxy Acetylene Welding Victor US $.99
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 SMITH SC225 Straight Cutting Heating Torch & Tip Oxy Acetylene Welding Victor US $.99
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Actually, ethanol is the same type of alcohol as that found in alcoholic beverages. So can we just keep a jug of vodka in the car in case we run out of gas? Afraid not!
Widely used in Brazil and the United States (much more than in any other part of the world), ethanol in a blend of no more than 10% will work just fine in most cars. In some cities, a 10% blend is mandated. In Brazil, the mandatory blend is 25%.
What makes it so attractive is that it is renewable, unlike the petroleum we now depend upon. It can be produced from agricultural feedstocks such as sugar cane, potato, manioc, and corn. Because of the difficulties with obtaining enough of these feedstocks coupled with high costs of production, research has turned to alternative sources such as cellulose.
Cellulosic ethanol is made from cellusolic fibers, a component in plant cell walls. The discovery that these can be used to produce ethanol is turning around previous research and the hope is that by using wheat stalks instead of grain, and corn stalks instead of ears, for example, we can increase our production of ethanol substantially without putting food supplies in jeopardy.
Other sources for ethanol production are ethylene (acetylene), calcium carbide, coal, oil gas, among others. Plants in the United States, Europe, and South Africa produce two million tons of petroleum-derived ethanol annually.
How is it renewable?
It is renewable because it uses a source that is naturally replenished. That is, sunlight, the source for photosynthesis, accounts for the production of sugar cane or corn, or any other ethanol source. Agricultural products are considered renewable because they use photosynthesis to grow. Of course, certain minerals such as nitrogen and phosphorus must be returned to the land, so this must be accounted for in the cost of production. Some of the crops than can produce ethanol are as follow:
- Cotton
- Fruit
- Most grains
- Sugar Cane
- Sugar Beet
- Sorghum
- Switchgrass
- Potatoes
- Kenaf
- Hemp
- Barley
- Sweet Potatoes
- Cassava
- Corn
- Sunflower
- Straw
- Cellulose Waste
Ethanol is produced by the microbial fermentation of sugars followed by distillation, dehydration, and denaturing. Enzymes are sometimes used to convert starch into sugar before the fermentation process begins.
Conventional unleaded gasoline produces carbon dioxide and aldehydes in such quantities that urban, car-based cities like Los Angeles are unfit for some people to live in, especially those who suffer respiratory weaknesses or disabilities. Stanford University, in a study by its atmospheric scientists, discovered that if the shift were made to ethanol from unleaded gasoline, deaths would be reduced by 9% every year in Los Angeles. Unleaded gasoline increases ozone levels significantly resulting in a dramatic increase in photochemical smog and an increase in medical problems such as asthma, the bane of citizens of Los Angeles.
Because of all of these factors, if you're thinking of burning a fireplace, it would be wise for you and your family as well as the atmosphere where you live to explore biofuel fireplaces where you can fuel some of the heating of your house with fuel that will not add to the existing problems.
Pureflame is a leader in Vent Free Mobile Fireplace and Ethanol Biofuel products. They offer the highest quality biofuels and contemporary fireplaces available on the market today. For more information, visit http://www.pureflame.com
Copyright (c) 2009 Wes Fernley
Searching For Soldering Tools?
Electric soldering iron and gas blowlamps are generally the heat sources required for soldering, these days you'll find that the flame-heated soldering iron is hardly ever used.
When choosing the right tool for you then it's worth considering that attempting to solder with a tool that simply doesn't have the power for the task in hand will just result in a waste of time. On the other hand, if it is too powerful it will make the solder far too hot and this weakens the joint. If your project involves particularly delicate work, then the odds are you you'll need an electric soldering iron. Some models of gas blowlamps are also quite proficient.
If the electrical job is quite large, or you are soldering jewellery or model-making, then consider using a blowlamp with a fine or extra fine burner as this will produce a hot flame that can be kept to a minimum. If you need it to contact with a larger area then you'll need one of the more powerful soldering irons. If the project involves plumbing, such as soldering capillary joints, then a gas blowlamp or blowtorch is the best option, whereas large pieces of metal, (or brazing), will require a powerful blowlamp.
Consider the following points:
- The solder and joint both have to reach a temperature of 250°C before it melts, this has to be maintained throughout until the job is complete.
- Consider the thermal size of the joint and its direct surroundings as large joints call for a larger supply of heat to reach the right temperature. Also when soldering metals, such as copper which is a good conductor of heat, to maintain a high temperature a steady source of heat is necessary.
- Take into account where the joint is positioned. If it is close to temperature-sensitive electronic elements like transistors, then it's advised to add a heat sink between the joint and the component which will soak up the heat from the soldering and stop it from travelling. Place a large pair of pliers between the two points as the heat sink. However, if the joint covers a large surface area and is open to the elements, it could radiate the heat away too rapidly. Fix this by surrounding the joint in a provisional brick hearth, or covering part of it in ashes. On no account place the joint on a surface that is a good conductor.
Brazing is a process which utilizes alloys of copper and zinc as they melt at much higher temperatures than solder (700 to 800°C) and provide stronger joints, and a special flux or a borax paste is required. Braze (or bronze) welding uses the same type of alloy, but a fillet is built up on the surface rather than running it into the joint. In the case where the joint is only small, then it's possible to reach the necessary temperature by applying a gas blowlamp flame directly on the joint. If this doesn't work, a higher heat supply is needed.
You can get a brazing attachment to use with an arc welder, generally in the shape of two carbon rods fixed in a hand-held clamp. An arc is produced between the tips of the two rods, and the resultant flame is used to heat the joint.
Before using this method for any repairs (or power tool) it's best to practice as it is an extremely powerful and fierce supply of heat.
Oxy-acetylene welding equipment is regularly used for brazing as the heat can be simply controlled by using the correct size nozzle and the torch is straightforward to control. However, a big problem with this method is that the gases are quite difficult to get hold of.
About the Author
Michiel Van Kets writes articles for Online Power Tools Ltd, a major UK supplier providing over 20,000 products including brands from the most popular power tool manufacturers. Explore a collection ranging from Makita tools, and Bosch tools to cordless power tools from Panasonic and Ryobi. Besides the online store, the company also operates a large showroom based in Glastonbury, Somerset.
A welder uses heat from the combustion of acetylene to weld steel plates together.?
a) Wt are the physical changes that the steel undergoes during and after this process?
b) Wt are the chemical changes that produces the heat the welder needs in order to work with steel. Wt type of chemical change is this?
**Please help me with this question. Also, if you used a website, please provide it. BIG THANKS!
wow i have the exact same question on my science lab, well i can tell you i feel your pain lol 
what are the odds.
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