Aluminum is one of the most used metals in today's society - it can be found across a number of industries, such as construction and commercial, and in a number of applications, such as beverage cans and appliances. When choosing a manufacturer of aluminium extrusion for supplying the metal that you use in your workplace, however, it is important that you carefully consider which one will be best for your needs.
The manufacturer will begin by removing the aluminium from deep within the earth's crust (either as bauxite ore or feldspar). Often, the Bayer's method, Wohler's method or Hall Heroult method is chosen to remove the metal in its molten form. It is then hardened and moulded into whatever shape the manufacturer desires. When the aluminium is extracted from the earth in its solid form, it will be passed through a number of mechanical processes that are designed to give the metal its desired shape. These processes include: rolling, drawing, forging, spinning, piercing and extrusion.
Regardless of whether aluminium has been found in its molten or solid form, the manufacturer will then pass it through either a hot working or cold working process to prepare it for their customers. When using the hot working process (the most popular of the two), a billet will be heated to a temperature of over 79 degrees Celsius, which will allow the aluminium to be easily distorted and placed into its desired shape.
The reason for the popularity of the hot working process over the cold working one can be fully realized when you compare aluminum extrusion to squeezing toothpaste out of its tube. It is much easier to extrude the metal when it is malleable, meaning that it must have been heated to a certain temperature.
Finally, the aluminium will pass through an extrusion and drawing process that runs almost parallel to each other. This is the final step in the whole extrusion process and is the step that gives the metal its entire shape. Deep drawing, for example, is used give the metal a cup, conical tapered, cylinder and seamless tube shape. For less curved shapes, the drawing process is skipped.
Once you are satisfied with the processes and methods utilized by a potential manufacturer of anodized aluminum, you can begin submitting your orders with them. If, after your first delivery, you are still satisfied with the manufacturer based on the promptness of the order being filled and the quality of the aluminium that you receive, you can continue the relationship.
2013年8月19日星期一
2013年8月7日星期三
Stainless Steel, Cast Iron, or Anodized Aluminum Which Is Better to Cook With?
Have you ever been standing in a store staring at cookware trying to
determine which pots and pans would be better for your cooking style?
There are advantages and disadvantages to each type of cookware. Whether
you are a beginner, intermediate, or experienced 'chef' will determine
which metal you should choose. Each type has its own purpose depending
on durability, price, and cooking experience.
Stainless Steel cookware is quite durable, easy to maintain, and reasonably priced. This type of cookware is great for the beginner and everyday chef. It does not dent, scratch, or rust and can be cleaned by hand washing or even put in the dishwasher. The disadvantage is that stainless steel is not a good conductor of heat, which means it tends to cook food unevenly. Most manufacturers have added aluminum or copper in between the bottom layers to make it a better conductor of heat. When purchasing Stainless Steel Cookware be cautioned that not all sets will have an aluminum core.
The advantages of using Cast Iron cookware are its durability, efficient price point, as well as being very good conductors of heat. The problem with this traditional type of cookware is it is heavy, yet sturdy, and will initially require a little more patience when trying to season. It is the original non stick pan, but you do have to 'season' the pans. Cast iron cookware should not be washed with soap or put in the dishwasher. If you do wash with soap you will have to 'season' your pan again. This type of cookware is great for the intermediate, as well as, the experienced chef. This type of cookware may take a little longer to heat up, but will hold its temperature long after the flame has been killed. It is great for searing steaks and seafood and can be placed into the oven to finish off a dish. Cooking with these pans will undoubtedly help create a fantastic plate, but you will have to decide whether or not the maintenance is worth the time and effort.
anodized aluminum is also a great conductor of heat. However, raw aluminum is reactive to acidic foods and can dent very easily. The good news is that most manufacturers have anodized their aluminum wares. Anodizing is a thick oxide coating on the aluminum that helps increase durability and protect the cookware from denting. Once you have Anodized Aluminum the benefits are still the same as raw aluminum and the disadvantages become almost extinct. It is lightweight, easy to clean, has a non stick surface, and is very affordable. It may not be as attractive as the Stainless Steel, but the entire cookware will maintain even temperature more efficiently. This type of cookware is also used for camping because it is lightweight and durable.
Just to sum everything up, stainless steel is good for making foods that do not require high heat and activities such as, boiling water, steaming vegetables, or cooking fish. Cast Iron cookware can reach higher heat temperatures and maintain its temperature for extended periods of time making it great for searing steaks, preparing breakfast items like bacon, eggs and scrapple or even preparing a tasty roast. aluminum profile extrusion is fantastic for the everyday cook, and even for a camping trip with the family, because it is a great conductor of heat and is very light weight. In most cases, it is better to buy separate pieces of each type of cookware rather than purchasing a complete set. If you only cook on occasion, purchasing a set would be beneficial for space and financial reasons, but if you are a food fanatic and love to experiment with an array of different flavors and textures, you really should piece a set together on your own and make it yours!
Stainless Steel cookware is quite durable, easy to maintain, and reasonably priced. This type of cookware is great for the beginner and everyday chef. It does not dent, scratch, or rust and can be cleaned by hand washing or even put in the dishwasher. The disadvantage is that stainless steel is not a good conductor of heat, which means it tends to cook food unevenly. Most manufacturers have added aluminum or copper in between the bottom layers to make it a better conductor of heat. When purchasing Stainless Steel Cookware be cautioned that not all sets will have an aluminum core.
The advantages of using Cast Iron cookware are its durability, efficient price point, as well as being very good conductors of heat. The problem with this traditional type of cookware is it is heavy, yet sturdy, and will initially require a little more patience when trying to season. It is the original non stick pan, but you do have to 'season' the pans. Cast iron cookware should not be washed with soap or put in the dishwasher. If you do wash with soap you will have to 'season' your pan again. This type of cookware is great for the intermediate, as well as, the experienced chef. This type of cookware may take a little longer to heat up, but will hold its temperature long after the flame has been killed. It is great for searing steaks and seafood and can be placed into the oven to finish off a dish. Cooking with these pans will undoubtedly help create a fantastic plate, but you will have to decide whether or not the maintenance is worth the time and effort.
anodized aluminum is also a great conductor of heat. However, raw aluminum is reactive to acidic foods and can dent very easily. The good news is that most manufacturers have anodized their aluminum wares. Anodizing is a thick oxide coating on the aluminum that helps increase durability and protect the cookware from denting. Once you have Anodized Aluminum the benefits are still the same as raw aluminum and the disadvantages become almost extinct. It is lightweight, easy to clean, has a non stick surface, and is very affordable. It may not be as attractive as the Stainless Steel, but the entire cookware will maintain even temperature more efficiently. This type of cookware is also used for camping because it is lightweight and durable.
Just to sum everything up, stainless steel is good for making foods that do not require high heat and activities such as, boiling water, steaming vegetables, or cooking fish. Cast Iron cookware can reach higher heat temperatures and maintain its temperature for extended periods of time making it great for searing steaks, preparing breakfast items like bacon, eggs and scrapple or even preparing a tasty roast. aluminum profile extrusion is fantastic for the everyday cook, and even for a camping trip with the family, because it is a great conductor of heat and is very light weight. In most cases, it is better to buy separate pieces of each type of cookware rather than purchasing a complete set. If you only cook on occasion, purchasing a set would be beneficial for space and financial reasons, but if you are a food fanatic and love to experiment with an array of different flavors and textures, you really should piece a set together on your own and make it yours!
2013年7月30日星期二
TIG Welding Anodized Aluminum Pipe on Your Tuna Tower Or Boat T-Top Project
Most people assume that TIG welding anodized aluminum is just like
welding any other aluminum piping. That is absolutely wrong and one of
the big secrets that very few welders know. Anodized aluminum requires
bumping or spot welding! Yeah, that the big secret!
In order to get this type of pipe welded you need to do two passes. The first pass is spot welded all of the way around with the filler wire being added. On the second pass you spot weld all the way around but without the filler wire added this time. The reason for this is anodized aluminium has a very hard coating that is difficult to melt through. The first pass will join the two pieces together but not melt the anodized coating into the weld area thoroughly. Since the coating is not melted properly the weld will look very rough. The second pass is used to melt the anodized coating into the weld better and give the weld its smooth appearance. Finally the weld is painted with weld paint. This is done because the anodized coating will no longer completely cover the weld area, so weld paint must finish the job to protect the weld area.
TIG welding anodized aluminum requires three things:
First is an A/C and D/C TIG welder with a high frequency start button on the TIG torch.
Second is a pure tungsten electrode with a tapered ball shaped end.
Aluminum weld paint.
To prepare the tungsten to weld anodized aluminum you need a tapered ball shaped end. To do this you simply put the tungsten into the TIG torch. Next turn on your welder and set it to D/C electrode (+) positive. Finally hit the high frequency start button and strike an arc on a piece of clean steel or ideally pure copper. Once the arc starts keep turning up the amperage until the tungsten starts to melt. Finally when there is a tapered ball end, stop the arc. That's it!
The actual welding is done by spot welding all the way around the pipe. The first thing you will need to do is set the TIG welder to A/C alternating current. Typically there will be two passes needed to weld the pipe. The first is with the filler wire added and the second it to smooth out the weld. The trick to TIG welding anodized aluminum is to keep your amperage on the high range and the spot welds should typically last about one second in time each.
Once the welding is finished all you need to do is paint the welds. That's all there is to TIG welding aluminum extrusion! Once you get going with this type of welding procedure you will be amazed how good the welds look on anodized aluminum piping!
In order to get this type of pipe welded you need to do two passes. The first pass is spot welded all of the way around with the filler wire being added. On the second pass you spot weld all the way around but without the filler wire added this time. The reason for this is anodized aluminium has a very hard coating that is difficult to melt through. The first pass will join the two pieces together but not melt the anodized coating into the weld area thoroughly. Since the coating is not melted properly the weld will look very rough. The second pass is used to melt the anodized coating into the weld better and give the weld its smooth appearance. Finally the weld is painted with weld paint. This is done because the anodized coating will no longer completely cover the weld area, so weld paint must finish the job to protect the weld area.
TIG welding anodized aluminum requires three things:
First is an A/C and D/C TIG welder with a high frequency start button on the TIG torch.
Second is a pure tungsten electrode with a tapered ball shaped end.
Aluminum weld paint.
To prepare the tungsten to weld anodized aluminum you need a tapered ball shaped end. To do this you simply put the tungsten into the TIG torch. Next turn on your welder and set it to D/C electrode (+) positive. Finally hit the high frequency start button and strike an arc on a piece of clean steel or ideally pure copper. Once the arc starts keep turning up the amperage until the tungsten starts to melt. Finally when there is a tapered ball end, stop the arc. That's it!
The actual welding is done by spot welding all the way around the pipe. The first thing you will need to do is set the TIG welder to A/C alternating current. Typically there will be two passes needed to weld the pipe. The first is with the filler wire added and the second it to smooth out the weld. The trick to TIG welding anodized aluminum is to keep your amperage on the high range and the spot welds should typically last about one second in time each.
Once the welding is finished all you need to do is paint the welds. That's all there is to TIG welding aluminum extrusion! Once you get going with this type of welding procedure you will be amazed how good the welds look on anodized aluminum piping!
2013年6月18日星期二
Aluminum Anodizing and Its Advantages
Anodizing is not like electroplating and other organic coatings, it is
unique to aluminum. It has greatly extended the applications of aluminum
products and uses after it was developed in early 1930's, where the
metal or else not be utilized. The anodic finish is now available from
aluminum finishing job shops all over the world and is quite
inexpensive.
Anodizing will convert the surface of aluminum to an oxide. Though it would naturally form aluminum oxide on its surface, it will be a very thin film. It offers a thicker oxide coating several times thick if required. The rigidity of this aluminum oxide coating challenges that of diamond. Due to this anodizing improves abrasion resistance. It can also appreciably modify and improve the appearance of aluminum. By the usage of dyes and special procedures, the finisher can make aluminum look like stainless steel, pewter, copper, or brushed bronze. The process will improve corrosion resistance, particularly when the metal surface is in exposure to humid, industrial, and marine atmospheres. The electrical insulating property of the anodic finish finds its application when dielectric properties are significant for electrical components. This type of aluminum is simple to clean and it resists heat to the high temperature where the metal itself melts.
We can define anodizing as an electrochemical conversion process, and not an applied coating. The surface of the metal is converted to aluminum oxide as a result of reactions going on at the anode in an acidic solution. Oxide formation generally gets inward, towards the source of the fresh metal. The first formed oxide will remain in contact with the anodizing solution all through the process cycle; the last formed oxide is at the metal interface. The coating will be nearly 30-50 pct thicker than the original metal it replaces.
Structure of most coatings is predominantly porous. There will be a very slight non-porous barrier film at the interface. Process control starts with the quality of the metal, its precleaning and racking, and finally ends with unracking, possible "clean-up" and final inspection. The job shop finisher or captive department generally has the least control over a very important requirement for good anodizing that is the metal quality. Type of mill product, alloys, worth, temper and so on has significant effects on the appearance, oxide coating property and functional properties like abrasion and corrosion resistance of the end product.
The finisher must know about the metal that is to be treated. Some process changes should be made, and particular quality standards will be difficult to attain other than the proper alloy is being anodized. These can be formed in a range of chemical solutions, though only a handful is in industrial use. The advantage of anodized aluminium is the potential of colored anodizing dye. These dye seeps into the microscopic pores of the anodized layer and colors it. This layer is then sealed and the color appears as part of the metal itself. This can be used for great artistic effect, making aluminum parts with strikingly tasteless colors to ornament your motor bike or, more topically, telescope.
Anodizing will convert the surface of aluminum to an oxide. Though it would naturally form aluminum oxide on its surface, it will be a very thin film. It offers a thicker oxide coating several times thick if required. The rigidity of this aluminum oxide coating challenges that of diamond. Due to this anodizing improves abrasion resistance. It can also appreciably modify and improve the appearance of aluminum. By the usage of dyes and special procedures, the finisher can make aluminum look like stainless steel, pewter, copper, or brushed bronze. The process will improve corrosion resistance, particularly when the metal surface is in exposure to humid, industrial, and marine atmospheres. The electrical insulating property of the anodic finish finds its application when dielectric properties are significant for electrical components. This type of aluminum is simple to clean and it resists heat to the high temperature where the metal itself melts.
We can define anodizing as an electrochemical conversion process, and not an applied coating. The surface of the metal is converted to aluminum oxide as a result of reactions going on at the anode in an acidic solution. Oxide formation generally gets inward, towards the source of the fresh metal. The first formed oxide will remain in contact with the anodizing solution all through the process cycle; the last formed oxide is at the metal interface. The coating will be nearly 30-50 pct thicker than the original metal it replaces.
Structure of most coatings is predominantly porous. There will be a very slight non-porous barrier film at the interface. Process control starts with the quality of the metal, its precleaning and racking, and finally ends with unracking, possible "clean-up" and final inspection. The job shop finisher or captive department generally has the least control over a very important requirement for good anodizing that is the metal quality. Type of mill product, alloys, worth, temper and so on has significant effects on the appearance, oxide coating property and functional properties like abrasion and corrosion resistance of the end product.
The finisher must know about the metal that is to be treated. Some process changes should be made, and particular quality standards will be difficult to attain other than the proper alloy is being anodized. These can be formed in a range of chemical solutions, though only a handful is in industrial use. The advantage of anodized aluminium is the potential of colored anodizing dye. These dye seeps into the microscopic pores of the anodized layer and colors it. This layer is then sealed and the color appears as part of the metal itself. This can be used for great artistic effect, making aluminum parts with strikingly tasteless colors to ornament your motor bike or, more topically, telescope.
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