 |
 John Wright 1991 CAST IRON Baking Mold 1 FLOWERS Nonstick MINT  US $24.99
|
 BLACK CAST IRON CANDLE CANDY CHRISTMAS SNOWMAN MOLD US $18.00
|
 Vintage Cast Iron Christmas Santa Chocolate Cake Mold US $9.99
|
Casting Iron, Iron Melting, And Iron Casting Basics
Many believe that iron casting is just simply out of reach for small furnaces but this is not the case. While alloys like aluminum are more prevalent in home foundries. Artists and hobbyists have also used brass, bronze, and even iron to fulfill their casting needs.
Industrial foundries commonly use iron for a variety of items like cookware, like cast iron pans, and even bridges. Casting iron provides an easy and effective method of making such large structural pieces and even smaller pieces for around the home.
The most common furnace type used by home foundries is the cupola furnace. The cupola is a basic furnace type that does not need a crucible as it allows the caster to pour the molten metal directly from the furnace into a ladle which is then poured into the mold. Cupola furnaces resemble smoke stacks and can be home made for those with enough confidence and some mechanical know-how to attempt it. The fuels used to heat the metal in a cupola furnace depend on the caster's resources and preference. Many will use propane and some will use coal. There are a select few that will use waste material such as old scraps of metal and the powder at the bottom of bags of barbecue coal to fuel the cupola. For iron many would recommend the use of propane, but there have been some casters that have succeeded with waste material. Don't be afraid to experiment with different fuel types to find the perfect fit for your furnace and need.
Finding a source of iron can be difficult and a trip to the scrap yard might be in order. This is just one of the exciting ventures that metal casting can provide you. After you locate your iron you will need to prepare your mold. This is assuming you have a pattern in mind that you want to cast. If not, then go ahead and figure something out even if it's a small piece in order to test your iron casting ability. Since sand casting is the most popular casting method you might want to use it for the iron casting especially if you are familiar with the method and not with iron.
After making the sand mold and placing the runner for the molten iron you will melt the metal. The melting point of iron is 2,800 degrees Fahrenheit or about 1538 degree Celsius. Since all metals melt at different temperatures don't be impatient if iron takes longer to melt and don't be surprised if it's quicker.
When the molten iron is ready you are going to pour some into a ladle and the pour that into the sand mold. The sand mold is held in place by the cope and drag, which is the top and bottom part of the mold. The runners are in place in the mold to allow the molten iron a place to enter. When the iron is cool, remove the cast from the sand carefully and there you have a cast of iron.
As with all metal casts, you will need to follow the appropriate safety steps to avoid any accidents. Accidents with molten metal will always be very painful so make sure you wear gloves, jeans, boots, and a long sleeve shirt. You may also want a heavy duty leather apron and a pair of goggles.
Iron casting is a great way to create restoration items or pieces for around the home and even for artistic purposes.
About the Author
Go to Metal Casting Zone to get your free ebook on Metal Casting at
Casting
. Metal Casting Zone also has
Iron Casting
Forum,
Iron Melting
Blog and a Metal Casting Blog with daily news on Metal Casting. You can Find Metal Casting Zone at www.metalcastingzone.com.
Cast iron radiators were invented in the 1860's and have been used to heat homes continuously since then. Although they are well known, many people have no idea how they function or how they are made up. Knowing the fundamentals of the unit is vitally important to your personal safety and could prevent problems from happening if the unit should need repairs.
Anyone who owns a unit should educate himself in the fundamentals of the equipment in order to protect themselves in case of problems. Obviously all cast iron radiators are made of cast iron. That material is selected for heating because of its high specific heat capacity. This is a measure of the amount of heat energy the material will hold at any specific temperature. Cast iron holds a great amount of energy. The energy moves through the surrounding air warming it up. This is what accounts for the great warmth we associate with these units.
Any other material has either a low specific heat capacity, or is too expensive to use. With a basic understanding of the fundamental operations of the unit, you will easily spot and be able to describe problems as they occur.
They have very few parts. The main thing to notice is the pipe that connects the unit to the boiler. In a steam radiator there is one pipe and in a hot water radiator there are two pipes. There are no pipes in electric cast iron radiators. In the steam and hot water radiators there is a valve on the pipe to control the steam or water flow through the radiator coils. The faster that flow the hotter the radiator will get.
Beyond a certain point however, increases in the flow rate does not increase the amount of heat generated. The unit consists of sections and columns. Section tubing runs vertically and column tubing run horizontally. They are also referred to as coils. Heat output increases with the number of coils present. The more piping present the greater the surface area available.
The greater the surface area present, the greater will be the transfer of heat to the cooler air at the surface. So the greater the surface area the more efficient the unit will be. These are the basic facts about cast iron radiators, but it is just what is needed to understand the basic operations of the unit.
Cast iron radiators provide even and efficient heating of your home. They can get very hot and that could be a problem. Because of the very high temperatures achieved, the units could pose a danger within the home. If you should lean briefly against one, you will not be harmed. However, if you get stuck on one it is possible that you could be burned. Caution should be exercised to be certain that the unit is safe in the house, especially around small children or animals.
Cast iron radiator information can be found all over the internet. Cast iron radiators are a great choice of heating.
Related posts
This entry was posted on Sunday, June 13th, 2010 at 10:58 am and is filed under Cookies. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.
