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How to improve the quality of aluminum profile extrusion die?
Content source: http://huichenglawyer-sy.com Author: military general release date: August 2, 2019 15:08 reading times: 3630 times Click collection

Aluminum profile is produced by hot melt extrusion of aluminum rod, and extrusion work is completed by die in production Aluminum profile The investment cost of the manufacturer in the mold is quite high, because the quality of the mold directly affects the appearance and size of the product. If the daily maintenance of the die is not strengthened, it is easy to scrap the die in advance and cause economic loss to the enterprise. Therefore, it is particularly important to improve the quality of the aluminum profile extrusion die.


For the aluminum extrusion profile industry, the input cost of the mold accounts for the production cost 30% Most aluminum profile manufacturers make great efforts to control the production cost and improve the quality of aluminum profile extrusion die from the following aspects:


Work management


The working belt is a working area perpendicular to the working end face of the die. It can be used to control the shape, size and appearance quality of the aluminum profile. If the size of the work belt is not properly controlled, it will affect the size of the aluminum profile, cause the appearance defects of the product, and also affect the service life of the mold. After nitriding, the polishing quality of the mould must be checked before and after nitriding, because the polishing quality of the polishing strip will be affected.


Cleaning in mold cavity


After polishing the working belt, check whether there are dust and sundries in the mold cavity. If the dust is slight, use a high-pressure air gun to blow. If it is difficult to clean up the impurities, first use a brush and then blow with an air gun to prevent dust and other objects from entering the mold cavity, so as to avoid the appearance defects of the extruded aluminum profile products.


 3030 industrial aluminum profile


Nitriding treatment


The surface nitriding treatment should be carried out on the aluminum profile die before use. The heat treatment of the die in high temperature environment can make nitrogen atoms penetrate into the die surface. The purpose is to improve the surface hardness, fatigue resistance, corrosion resistance and sufficient toughness of the die. Nitriding treatment is generally divided into three times, each time according to the length of extruded profiles to determine the thickness of nitriding film to reach 0.15mm Too much nitriding will affect the service life of the mould.


Boiling method


After the mold is unloaded, it is necessary to put the mold into alkali water for boiling. At this time, attention should be paid to the boiling method. The mold should not be put into the alkali water immediately, and the mold temperature should be reduced to 120° C Because the temperature difference between the mold and alkaline water is too much, the mold will crack and the mold will be scrapped.


Control of extrusion process


Aluminum profile is produced by high-temperature extrusion. The die is tested by high-temperature conditions first, so the control of extrusion process is very important.


① Extrusion temperature: if the extrusion temperature is too low, the stress resistance during deformation is large, which is easy to cause the phenomenon of blocking; if the extrusion temperature is too high, it is easy to cause cracks in the die and increase the probability of waste products, so the extrusion temperature has a very important impact on the deformation process and microstructure of aluminum profiles.


② Extrusion speed: different extrusion speed should be used for different alloys, such as those with higher magnesium content five As soon as the alloy is extruded, the crack will disappear six thousand and sixty-three Alloy, only for extrusion temperature requirements, extrusion speed will not produce cracks, so the extrusion speed should be controlled within the range of process requirements.


③ Deformation degree: the degree of deformation is directly proportional to the extrusion coefficient. The degree of deformation determines the uniformity of the mechanical structure of the material Aluminum profile The deformation rate is controlled in 91% About, extrusion coefficient should reach eleven If it is a special shape and size of aluminum alloy profiles, you need to set the deformation rate and extrusion coefficient.


With the improvement of industrial modernization, the cross-section shape of aluminum profile is ever-changing, and the complexity is also increasing. Aluminum profile manufacturers can calculate the extrusion coefficient according to the actual parameters such as the section size and wall thickness of the profile, so as to determine the size of the extruder, and then reasonably select the size of the die. The detailed record of various die conditions should be made It can be used as a reference for later use, which is conducive to the production of aluminum profile products with qualified shape, size and appearance quality.

Hot words: Aluminum profile      Aluminum profile accessories       Aluminum alloy lean pipe        Industrial aluminum profiles

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Contact APAs / contact us
Tianjin Aipu industrial aluminum profile Co., Ltd
Tel: 022-87920088
Fax: (avoid malicious advertising) please Contact the enterprise network administrator
Service hotline: 137021119190 (24-hour service hotline)
Q        Q: five hundred and thirty-four million nine hundred and seventy-three thousand nine hundred and six
Email address: lxc@apas.com.cn
Address: a3-2 Saida international industrial city, Xiqing Economic and Technological Development Zone, Tianjin
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