Manufacturing method of Mg-based composite wallboard profile

A composite material and a manufacturing method technology, applied in the field of manufacturing magnesium-based composite wall plate profiles, can solve the problems of high bending and torsion of the profiles, easy to get stuck, and achieve the elimination of casting stress, elimination of intragranular segregation, and uniform structure. Effect

Active Publication Date: 2015-01-28
HEILONGJIANG INST OF TECH
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Problems solved by technology

[0003] The present invention is to solve the problem that the extrusion process is easy to be stuffy and the profile has a high degree of curva...

Method used

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  • Manufacturing method of Mg-based composite wallboard profile

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specific Embodiment approach 1

[0018] Specific implementation mode one: the manufacturing method of the magnesium-based composite material wall plate profile of this implementation mode is implemented according to the following steps:

[0019] 1. According to the mass percentage of elements, Al: 0.2%, Mn: 1.3%-2.2%, Zn: 0.3%, Ce: 0.15%-0.35%, Fe: ≤0.05%, Si: ≤0.1%, Cu: ≤0.05 %, Ni: ≤0.007%, and the balance is Mg. Weigh aluminum ingots, magnesium-manganese master alloys, zinc ingots, magnesium-cerium master alloys, magnesium-iron master alloys, magnesium-silicon master alloys, copper ingots, magnesium-nickel master alloys and magnesium Ingots are used as raw materials, and the raw materials are added to a dry smelting furnace, and smelted at a temperature of 760°C to 780°C for 3.5h to 5h to obtain a magnesium alloy melt;

[0020] 2. Preheat the SiC particles, the preheating temperature is 490℃~510℃, the holding time is 1.5h~2.5h, add the preheated SiC particles into the magnesium alloy melt obtained in step ...

specific Embodiment approach 2

[0031] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that in step 1, raw materials are added into a dry smelting furnace and smelted at a temperature of 770° C. for 4 hours. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0032] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the particle size of the SiC particles described in Step 2 is 5 μm˜8 μm. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention relates to a manufacturing method of an Mg-based composite wallboard profile. The manufacturing method aims to solve the problems that in an existing manufacturing method of the wallboard profile, jamming occurs easily in the extrusion process and the profile is high in bending degree and twisting degree. The manufacturing method comprises the steps of smelting raw materials in a smelting furnace, adding SiC particles, making a Mg-based composite flat cast bar through casting, cutting off the flat cast bar, removing an oxide skin through turning, carrying out homogenizing annealing, extruding an annealed Mg-based composite flat cast ingot, heating the Mg-based composite wallboard profile to 150 DEG C to 180 DEG C, carrying out tension straightening, and cutting away the head end and the tail end. The bending degree of the Mg-based composite wallboard profile obtained through the manufacturing method is smaller than 1.5 mm per meter, the twisting degree of any part of the profile around the longitudinal axis is not larger than 1.5 degrees per meter, and jamming will not occur in the extrusion process.

Description

technical field [0001] The invention relates to a method for manufacturing a magnesium-based composite material wall board profile. Background technique [0002] Magnesium-based composites have the advantages of light weight, high specific strength, high specific stiffness and good wear resistance, and are increasingly used in aerospace, military and automotive industries. Particle-reinforced magnesium-based composites have the characteristics of low cost and simple preparation process, and have gradually become the focus of research in the field of magnesium-based composites. Existing siding profiles are made of magnesium alloy, which are obtained by extruding a circular extrusion cylinder. The degree of extrusion deformation is large, and the extrusion process is stuffy. The profile dimensions and straightness exceed the range required by the standard, and the curvature per meter is 2.5 mm to 3.5mm, the torsion around the longitudinal axis per meter of any part of the pro...

Claims

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Application Information

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IPC IPC(8): C22C23/00C22C1/03C22C1/10C22F1/06
CPCC22C1/03C22C1/1036C22C23/00C22F1/06C22C1/1047
Inventor 文丽华吉泽升宁慧燕翁江翔鲍春平唐玉玲王晓宏
Owner HEILONGJIANG INST OF TECH
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