Archive for the ‘Uncategorized’ Category
Home Built Foundry Aluminum Pour
Aluminum Pour in a Home Built Foundry
Posted in Hobby Metal Casting, Home Metal Casting, Uncategorized | 
Tags: Aluminum, amp, Foundry, height, Home, youtube video | 
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Cast Iron Casting- Creating complex shapes
Cast Iron Casting- Creating complex shapes
Our daily activities comprises of using many small and big things having vital role in many activities. Big containers, candles, bottles, hammers, work pieces, sculptures etc are few of the many materials which have found their applications in our day to day activities. All these materials are designed to offer convenience and ease while working. Many statues and sculptures are shaped using created models.
Molds are created to produce items of similar shape and this process is termed as casting. A manufacturing process in which molten material is poured into the hollow cavity and after cooling it take shape of the mold. Casting is basically solidified part which is taken from mold to complete the entire process. This process is used to design shapes which are complex and difficult to design. This practice is followed due to its cost effective nature and ability to simplify the complex shapes.
Plastic, aluminum, glass or iron, any material can be melted to form shapes. Amongst many types, grey casting offers caster huge flexibility and freedom to make numerous shapes. Cast iron is used for this type of casting and it is derived from pig iron and also termed as grey iron. Grey cast iron is called because of the grey fractured surface and presence of the graphitic flakes deflects.
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Cast iron casting produces metal parts having low physical requirements, like oil pan, protective cover etc, frame, floor, hammer, handle base. Frame, knife, wheels, valves, pipes, motor blocks etc are the products which are produced using this casting. Gear box, brake wheel, coupling plate, medium pressure valve, cylinder liner, flywheels, and cylinder blocks are prepared using grey casting and have also found extensive applications in industries.
Cast iron casting makes use of material with good vibration damping, good wear resistance and good machine ability. However, it has low tensile strength and elongation, but ductile casting process makes use of ductile iron and malleable iron having great strength, amazing ductile properties and is also tough and offer resistance to heat. Ductile casting’s characteristics make them win over ductile steel casting, as it has high and complex production cost. Pressure pipes and fittings, automotive applications, road and construction applications, general engineering applications are various areas where casted ductile iron and malleable iron are used.
Several advantages of grey casting have opened its door in various fields, but at the same time it has to be linked with many drawbacks. This casting process cannot be used for variety of working conditions, which can be provided by ductile steel casting and iron steel casting. Besides, not so good mechanical properties deprive cast iron from being welded and workable. There are many advantages and disadvantages which tells you to decide; what to choose and where?
Hi! I am an active writer since four years and involved in providing the readers with the complete information about the Cast Iron Casting.
Article from articlesbase.com
This is a cast iron pipe that attached the upstairs bathroom. It will be removed and new PVC piping will be run elsewhere so this area can remain open.
Video Rating: 2 / 5
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Tags: cast, Creating, good vibration, hollow cavity, mold casting, process |
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Cast Iron Radiators ? Timeless Elegance for Your Home
Cast Iron Radiators ? Timeless Elegance for Your Home
Cast iron radiators can be the perfect choice if you are upgrading your home interiors. When you are decorating your home it can be difficult working out what to do with heating systems.
Conventional radiators are effective but they are not always the most stylish option on the market. They are often bland and purely functional in design and this can detract from interior design schemes. Traditional Cast iron radiators can offer the ideal solution. Not only do they provide a timeless elegance for your rooms but they are also very functional as well for heating systems.
Period Cast Iron Radiators
Period cast iron radiators offer quality engineering for your home. These radiators are long lasting and the dense metal makes them very durable. This means cast iron radiators will continue to provide effective service for many years. There are some antique cast iron radiators on the market that are over a hundred years old and still in perfect working order.
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If you are refurbishing your home in a period style then you can get a wide range of cast iron radiators. There are options available in Victorian, Georgian and Edwardian styles. There are also designs available that reflect period American and French design influences. This means you should be able to find the perfect cast iron radiators to match your period interior design schemes. You can buy these as new reproductions or refurbished original antiques.
Modern Cast Iron Radiators
Cast iron radiators are becoming popular again as a home heating solution. This is because they not only offer an attractive option for rooms but they are also very economic. You can heat your home cost effectively with cast iron radiators and this is good news for anyone looking to keep their fuel bills as low as possible.
- This is why many companies are now manufacturing cast iron radiators for the modern market.
- You can buy brand new cast iron radiator sets designed in a wide range of modern styles.
- These radiators are made using traditional methods and offer a similar classic look to the original designs.
- You can choose from a great selection of paint finishes for your cast iron radiators. This includes some stunning bold colours that can create a real impact on your design schemes.
Bespoke Cast Iron Radiators
If you want something a little more special then look out for bespoke cast iron radiator companies. They will be able to offer you cast iron radiators designed to your exact specifications.
Bespoke services will of course be more expensive than buying pre-made radiators ‘off the shelf’. However this is ideal if you want something totally original for your home heating systems or you have awkward spaces that cannot be heated by conventional radiators.
When buying traditional cast iron radiators for your home you will have plenty of choice available. You can opt for refurbished radiators or brand new options designed to your specifications.
Article from articlesbase.com
Posted in Uncategorized |
Tags: cast iron radiators, Home, Market, original antiques, Period, timeless elegance |
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SPIN CASTING PARTS 1, 2 & 3
THIS IS THE FIRST PART IN A SERIES ON WHITE METAL SPIN CASTING.
HOW TO MAKE A SPIN CASTING MOLD.
PART B3 ON MOLD MAKING FOR SPIN CASTING
Who said a metal casting class can\’t be useful?
LOL, I should have made one of *these* in the metal casting class I took. Would have made things a little interesting…
Metal Casting DIY
\”the beast\” Buffalo Iron Pour
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Tags: Buffalo, experimental metal, furnace, iron, Napoleon |
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I\’ve heard cola can remove rust fromm things like a cast iron campfire pie iron. How does this work?
Which cola is best? Coke? Pepsi? Faygo? How long? Do I scrub it with anything afterwards? Will this also work for flatware that might not be silverware… or that little cap on the sink that’s starting to rust? I’ve also heard using aluminum foil like a scouring pad works. Does it? Is it bad for the metal? What about cast iron?
Brass Metal Casting
Metal casting in Singapore?
I have a small item, which I’d like to have it casted in stainless steel or other metal. Anywhere in S’pore provides such service?
Home Metal Casting
Posted in Uncategorized |
Tags: home metal, item, Koanster, Metal, pore, stainless steel |
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The Truth About Cryogenic Processing for Improved Characteristics in Metals
In order to fully appreciate and understand the process of cryogenics, one must have a basic understanding of the purpose of heat treating.
Parts to be hardened are heated by one of several different methods, none of which are important to the understanding of the cryogenics process. Tool steels are generally pre-heated to a fairly high temperature before they are then soaked (a certain temperature a metal is held in is referred to as a soak) in their final heat treat temperature. This allows for temperature equalization of the metals throughout as well as sets the grain structure to allow for better transformation in its austenizing temperature.
Lower alloy steels however, are not preheated but are soaked directly at their austenizing temperature. Austenite is the name of the grain structure that forms in ferrous steels at this critical temperature. It is this austenizing temperature, along with the correct amount of time that allows for the metal to transform to this austintenic grain structure. Austenite grain structure is a very large, coarse, irregular, loosely bonded structure. At this critical temperature the metal has essentially melted within its own physical structure. The molecules are now free floating with no bonds to one another.
There are many variables in this stage that can determine the amount of retained austenite in the next stage. However, it might also be noted that cryogenics can fix some of these problems, although it should never be used as a “band-aid” to repair sloppy heat treatment.
After the austenization soak the metals are then quenched. A quench is a removal of heat at a controlled rate; this rate is dependant on the alloys the metals posses. This is a deliberate action to motivate transformation of the austenitic structure to the preferred martensitic grain structure. This is the grain structure that is highly resistant to wear. The martensitic structure is a much more refined, hardened, smaller, tighter, and stronger bonding grain structure. To accomplish the transformation the heat must be removed from the metal. This is one of the most critical steps in heat treating, if the temperatures and times are off, then transformation will not be of ideal structuring.
The parts will be quenched to a temperature of approximately 65°C. At this stage the newly formed “raw” martensite is very unstable and needs to be tempered in a tempering oven to stabilize the structure. There is also a slight transformation of some retained austenite to martensite in the temper. Tempering steel after fresh martensite is formed is an absolute must as the highly unstable behavior of the grain structure can crack or shatter.
This ends the heat treatment process; however there still remains untransformed retained austenite in the metal. Even though a very high quality controlled heat treating may give up to 90% transformation, it is very highly unlikely in batch applications. The usual transformation for a good heat treatment is around the 60-80% mark, with poor treatments falling well below these percentages. However even with as little as 2-3% retained austenite, the difference after transforming the remainder can be very significant.
Cryogenic technology to continue the transformation to 99.8 – 100%, increasing wear resistance in heat treated steels.
Cryotron cryogenic equipment, designed to do a deep cryogenics process – often incorrectly referred to as “cryogenic tempering” – uses cryogenic temperatures (-196°C, -320°F) to transform the retained austenitic grain structure, into the smaller, stronger, more desirable martensitic grain structure. Hereby enhancing the molecular bond within the properties of the metals and giving them greater strength in several areas, including drastic increases in wear resistance. The transformation rate is much greater than that of heat treatment alone and will get a rate of about 99.8 to 100% transformation. However, Cryogenics should not ever be considered to replace the heat treatment, it is a complimentary treatment that enhances what took place during the heat process.
To add to the mixture; during the cryogenic process there is also a precipitation of fine eta carbides throughout the metal; this is in addition to the larger carbides already present in the ferrous metals. These fine carbides increase the bond mechanisms within the molecular structure of the metals, which in turn increases wear resistance again.
Once again, the metals are taken out of the cryogenic equipment and tempered in a proper tempering oven to stabilize the newly formed martensite.
When the process is complete, the metal is a tougher, stronger and a much more durable substance than before. Cryogenic processing is a thorough process and permanently alters the entire thickness of the wear resistant metal; it is not just a coating or surface treatment. This deep cryogenic treatment also relieves the stress built up by the heat treatment process, as well as any residual stresses that may subside from the manufacturing and/or machining process. Please click here to read more about cryogenic stress relief, and the array of materials the treatment will work on including castings.
The combination of the newly formed martensite and stabile stress relieved material makes the surface of the metal less porous, so there is more surface area to wear; again adding to the arsenal against wear.
However, the process will not work on all metals to improve wear characteristics as believed by some. If the carbon content is too low, or the proper heat treatment is not done correctly, the results may not show any value at all, or may even show the contrary. An assessment may be critical on some metals to find out more information in the chemistry and heat treatment practices done to properly determine the outcome of a cryogenic treatment.
As for the speculation over whether or not cryogenics can act as a stress relief, yes it can. As documented in the ASM “Handbook of Residual Stress and Deformation of Steel” it was proven at both the Technologic Institute of Louisiana, and the Technical University of Jassy, Romania that cryogenics will work to favorably redistribute the residual stresses throughout the entire part.
Cryogenic treatment has been documented throughout the scientific world as a means to improve wear resistance in many heat treated metals and thoroughly relieve any built up and residual stresses. It is not a cure all “snake oil” as is read in many places on the web, but it will significantly improve several characteristics in many metals in areas that are beneficial to some. There is no need to do a cryogenic treatment on your silverware at home, as it will not be beneficial. However, if you are having breakage problems with a high torque part, or abrasive wear problem at work, a cryogenic treatment is something to look at.
Metal Casting
Posted in Uncategorized |
Tags: alloy steels, C. At, grain structure, heat, structure, temperature, tool steels |
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