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How to judge the quality of aluminum profiles

2019-08-20 09:31

  There are good and bad aluminum profiles, and the number of aluminum profiles purchased is so large that it is impossible to check them one by one. In order to reduce unnecessary troubles, it is very important to choose a good manufacturer. If you understand the factors that affect the quality of aluminum profiles, You can buy the rest assured materials.

  alloy element

  6063 alloy is an alloy composed of aluminum, magnesium and silicon as the main elements. Each element has a certain range of content, and the price of magnesium is high. Some manufacturers reduce the amount of magnesium to the minimum allowable amount in order to reduce the cost. In some cases, the magnesium content is below the minimum allowable content.

  In addition, the factory added waste wires and waste aluminum aluminum pans to the alloy, which is basically not the 6063 alloy. The aluminum profile is mechanically low in strength and can be easily bent with two hands and one bend. It is commonly called "noodles". This is one of the reasons why aluminum profiles can be cheaper for a few thousand dollars.

  Regular aluminum profile manufacturers have internal standards when formulating alloy components. Within the range of various elemental contents, each factory has their own smaller range of variation. The ratio between aluminum, magnesium and silicon is very strict. Each factory has its own data and keeps it confidential.

  An alloy made of qualified formula can guarantee the quality, otherwise it will not be processed in the future.

  Aluminum alloy melting furnace

  It is also crucial to have a good 6063 alloy for melting. The furnaces used in China are now in the 40s level, and also in the 1990s. The worst manufacturers use the original 坩 boiler. There are coal-burning, oil-burning, gas-burning and electrically heated melting furnaces.

  Some stoves have chimneys, and some have no chimneys. Generally used are square furnaces (rectangular furnaces), advanced ones are circular furnaces, and some circular furnaces can tilt down aluminum water. On the tonnage of one ton, two tons, five tons, ten tons, twenty five tons and fifty tons of molten aluminum furnace. More advanced, add a static furnace under the aluminum melting furnace, static furnace is important to prepare 6063 alloy, in which the slag can be degassed, allowed to stand, and then cast aluminum rod for extrusion.

  The quality of the alloys formulated in the original coal-fired furnaces and modern round furnaces is absolutely different.

  In general, the furnace should have a chimney regardless of the fuel burned. Most of the waste gas generated from the combustion of the fuel can be discharged from the chimney.

  If no exhaust pipe waste gas is completely melted in the aluminum water, the aluminum rod for extrusion is cast, and there is a serious slag bubble inside, which is one of the reasons for the poor quality of the aluminum profile, which is one of the reasons for the low price of aluminum.


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