Aluminum mass determined by four factors
Hardware Knowledge: Aluminum quality, determined by four factors.
1. Alloying elements
6063 alloy is Mg-Si alloys prepared for the main elements, each element have a range of content, the high cost of magnesium. Some manufacturers in order to reduce costs, the magnesium content with less to a minimum allowed. Some Even worse, the magnesium content of less than the minimum level allowed. There are factories in Canada in the alloy wire scrap and waste basin waste aluminum pan and basically not to mention 6063 alloy. Resulted in very low mechanical strength aluminum, can be as low to the corner to be easily bent with the hands, commonly known as soft as noodles. That is why aluminum can be one of the reasons a few thousand dollars cheaper.
Regular aluminum manufacturers in the preparation of alloy composition, the internal standards are, that is, within the framework of a variety of element content, the plants have their own smaller range, aluminum, magnesium, silicon ratio requirement among the very strict The factory has its own data and confidentiality of each other. Qualified formulations made of alloy, in order to ensure the quality of this, or how the processing, quality can not go up.
2. Aluminum Melting Furnace
6063 alloy with a good how to melt, what are the stove, it is also crucial, and now the domestic stoves used by the level of 40 years, but also the level of 90 years, the worst of the manufacturers of the crucible with the original boiler. A coal-burning oil, burning gas and electric heating furnace. Some stoves have chimneys, and some stoves without chimneys. Tends to be used are mostly square furnace (a rectangular furnace), advanced for the round stove, and some circular furnace can be tilted down aluminum water. On a tonnage tons, 2 tons, five tons, 10 tons, 25 tons and 50 tons-shaped aluminum melting furnace. A little more advanced, and in aluminum melting furnace coupled with a put it aside for the following furnace, holding furnace important to the preparation of 6063 alloy can be in this furnace slag addition to gas, put it aside, and then casting rod for extrusion use. In the original coal stove and modern circular furnace in the preparation of the alloy quality, and definitely not the same. General stove, no matter what the fuel burned shall have the chimney, fuel in the combustion gas generated in the process the majority of residue can be discharged from the chimney. If no chimney exhaust all the melting in aluminum residue in water, so cast out of use for extruded aluminum bar, the internal existence of a serious slag bubble, this is one of the causes of poor quality aluminum, this is one of the reasons cheap aluminum.
3. Alloy Casting
The level of domestic casting equipment is also very different, the most veteran of 40 years of foundry equipment levels of iron casting, advanced with hydraulic semi-continuous casting. Cast iron casting rod crystal structure is poor, and in casting rod there are a large number of slag and air bubbles, poor quality casting rod, is now generally used in more common plant is the level of casting (also known as continuous casting) and semi-continuous casting , semi-continuous casting most of the rope drive, the best hydraulic transmission. Semi-continuous casting rod the length of the range is generally 3 meters, 4 meters up to 8 meters. Semi-continuous casting is to pit while casting down the side, surrounded on all sides with cold water cooled, water-cooled four weeks due to uniform, uniform dense casting rod crystal structure. But the rope down the transmission, not as a smooth hydraulic transmission, hydraulic rod casting casting casting rod surface than other surfaces are smooth. Squeeze casting rod is a good smooth surface profiles one of the prerequisites. Other methods of casting out the cast with the rod surface is rough, in order to ensure the quality of profiles, sometimes the first car on the casting bar knife, car to the appearance of rough-cast rods. Now commonly used in semi-continuous casting mold, for the advanced level of hot-top casting with the mold, the characteristics of such a casting mold filling time can cast a good Jigen to tens roots, casting good quality, with high-quality 6063 aluminum alloy cast rods , in order to have good potential to produce aluminum, if the old with the original casting foundry equipment can not be a good casting rod, it simply can not produce a good aluminum. Nations, there are ALUMINUM, there is no production of aluminum rod of the equipment, but to the power plant or other acquisition of 6063 aluminum alloy rods, such as ALUMINUM, quality control in the production of cast aluminum rod factory hands, to produce aluminum material difficult to achieve consistent quality. Use of outdated equipment with advanced casting equipment than the first, small investment and low production costs, which is why aluminum is one major reason for the difference sales.
4. Profile extrusion
My profile extrusion machine a wide range of disparity between high and low grades, but also for the world.
A factory’s own simple extruders, plastic extrusion machine useful transformation, there is a small amount of domestically produced, followed by most of Taiwan, the devils, and the United States and Germany, there are water pressure, and oil pressure. Short domestic hundreds extruder varied. Generally agreed that devils, the United States, Germany, extrusion machine is better, followed by Taiwan. Good and bad extrusion machine, the same casting rod, extrusion quality, no two samples of the profile. We often see the building doors and windows with aluminum 6063T5, which is the United States brands internationally.
Chinese trademark for LD31RCS.T5 and RCS expressed state, said the air-cooled quenching artificial aging condition. Metal quenching high-temperature suddenly dropped to low temperature for the quenching, such as steel knife blade should be quenched in the water before hard and sharp, but there are water-cooled aluminum quench hardening, but also air-cooled quenching. 6063 profiles used in construction-use air-cooled quenching, the quenching of aluminum spent some time on the aging furnace, aluminum rearrange the internal crystallization, mechanical strength has improved significantly. All the alloys in the metal, except aluminum alloy has the limitation that only the state.