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High-intensity light the wires forming process and mechanism of

Author: ZhangZhiHao
Tutor: ZhongYi
School: Kunming University of Science and Technology
Course: Materials Science
Keywords: Powder molding Coated wire Radial pressing
CLC: TF124.8
Type: Master's thesis
Year: 2002
Downloads: 206
Quote: 2
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Abstract


Powder extrusion method is an important means of preparation of powder metallurgy compact high-performance materials , foreign powder extrusion process has a wide range of research and applied research in this area is relatively backward . Kunming University of Science and Technology on the two-wheeled continuous extrusion and continuous coating equipment and processes carried out long-term research , achieved many breakthrough . The paper seeks to On this basis, combined with the excellent performance of the powder aluminum matrix composites prepared by high - strength lightweight powder wire and interface combined with high strength , good surface quality and Chief clad wire with the excellent performance of the aluminum matrix composites , industrial applications . The paper combines the characteristics of the powder , the powder forming mechanism , strengthen the mechanism of the powder extrusion products , powder surface oxides and particulate reinforced material powder extrusion products performance and formability of the Commentary . The main parameters affecting powder extrusion performance ( the extrusion ratio , temperature, particle size , rate of deformation , the shape of the mold inlet and lubrication , etc.) and the powder - coated wire forming process made ??qualitative analysis . Literature yield criterion and mechanical model of the engineering method and the ceiling method to get the engineering significance of the the powder extrusion extrusion pressure formula . On the basis of preliminary studies , powder wire and bi-metal , tri-metal cladding material simulation experiments continuous extrusion mold , and made ??mold powder wire and coated materials under different process parameters forming experimental research . The paper gives the tensile strength of the extruded product in the course of the experiment with the extrusion ratio , the relationship between the content of particulate reinforced materials , the actual extrusion pressure required for powder extrusion and particulate reinforcing material content , extrusion ratio , extrusion relationship between the speed and so on. Analysis of the the waste powder wire and coated metal extrusion and the causes . The the experiment resulting aluminum powder extruded wire and auto-oxidation with the Al 2 < / sub > O 3 < / sub > from the wire and the SiC particle reinforced with high tensile strength and good electrical conductivity . The derived metal powder radial extrusion extrusion pressure is calculated by experimental verification , the error does not exceed ± 10%, to meet the engineering requirements .

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CLC: > Industrial Technology > Metallurgical Industry > Metallurgical Technology > Powder metallurgy (metal ceramic technology ) > Powder molding, sintering and post-processing > Processing and final processing of the product
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