| Summary: | 碩士 === 國立虎尾科技大學 === 材料科學與工程系材料科學與綠色能源工程碩士班 === 107 === The extrusion molding machine and the wire drawing machine let the material be put into the mold and the machine, and under the action of strong pressure and a certain speed, the material is extracted or extruded from the mold and the machine, and the desired shape and size are obtained therefrom. . When the material is extruded, the deformation or temperature of the material or the mold is increased, so that there are serious defects such as oxidation and decarburization, which in turn affects the dimensional accuracy and surface roughness of the extruded or stretched material. Therefore, precision machining will be carried out to improve the quality and precision of the products.
The main purpose of this study is to formulate the formulation of the lubricant added in the drawing. The addition of nanoparticles to the lubricating oil can often improve the anti-wear performance, extreme pressure resistance, friction reduction or good temperature at low or low temperatures. Lubrication performance. In the past few years, academic and industrial betting has received great attention due to the unique chemical, physical and mechanical properties of graphene in nanoparticle.
In this paper, polyalphaolefin (PAO) with good viscosity characteristics at high and low temperatures was selected as the base oil. The lubricating properties of 0~0.08g/ml graphene were added to the base oil. In the study, the amount of load, the stretching time, and the eye mold temperature required for the cross-section reduction of the test piece were measured using the pull test amount. When the lubrication with different graphene content was added to the experiment, the drawing was carried out at a drawing speed of 20 m/s, and the maximum tensile force and average pulling force required at 0.02 g/ml were optimal. From the test results, the lubricant using 0.02 g/ml of graphene can be reduced by about 3% compared to the base oil.
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