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Dissertations / Theses on the topic 'SKD11 Steel'

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Published: 4 June 2025

Last updated: 1 August 2025

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1

Lin, Hung-Hsiung, and 林鴻熊. "Studies of tool wear for milling hardened steel SKD11." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/89413958693751823746.

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碩士<br>華梵大學<br>機電工程學系博碩專班<br>97<br>This paper was to investigate the effect of different tool geometries with rake angle and helical angle and different coatings of TiCN and TiAlN on tool wear under down milling and up milling of the hardened steel SKD11. The experiment results showed that when the down milling was employed to machine SKD11 steel, the resulting tool wear was smaller than that of up milling. This may be because the cutting temperature and the abrasive wear are lower. In addition, using the end mill with negative rake angle under the down milling showed a lower wear. The reason f

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TSAI, DENG-CHUAN, and 蔡登全. "Study on Polishing of SKD11 Die Steel by different abrasive." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/65113389602658997489.

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碩士<br>東南科技大學<br>機械工程研究所<br>104<br>This dissertation is about the investigation of surface defect and surface roughness of SKD11 die steel after machining based on high precision planar machinery polishing parameters. During experimental process, grinding and polishing of SKD11 die steel surface have been carried out by using slurries of different concentrations with different grinder rotational speeds and counterweight pressure parameter settings in order to explore the original surface of specimen and the surface roughness and morphology after grinding and polishing. In this experiment the SK

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3

Chen, Alan, and 陳建元. "Grinding Characteristics of Resin CBN Grinding Wheels for SKD11 Steel." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/56785481074219846320.

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碩士<br>國立勤益科技大學<br>機械工程系<br>102<br>The purpose of this study is design a new sand stick to decrease compounding recipe times. We all know, Wheel structure of three elements is abrasives, binders and pores. Sand stick and wheel have same structure but different geometric shapes, so this paper manufacturing CBN resin sand stick from wheel process. Previous test wheel surface are often observed by the situation after grinding wheel surface, but this method can’t carefully observe the micro-structural variations in the abrasives and binders after grinding, so this paper design platform can carry ou

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Lai, Meng-tse, and 賴孟澤. "Effects of the Properties on SKD11 Tool Steel by Oxynitriding Processes." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/f2bmj7.

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碩士<br>國立臺北科技大學<br>材料及資源工程系研究所<br>98<br>In this study, JIS SKD11 tool steel is used and divided into three parameters of oxynitriding treatment. The first step is to change the temperature of oxynitriding treatment (470°C-8 h, 480°C-8 h, 490°C-8 h and 510°C-8 h) and keep the same post-oxidation time (30 min), then to find the optimal temperature of nitriding. The second step is change the soaking time of oxynitriding treatment (480°C-6 h, 480°C-8 h and 480°C-10 h) and soaking time of post-oxidation is same. Finally, we use the different soaking time of post-oxidation (480°C-8 h-30 min, 480°C-8

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Wang, Hsien-Po, and 王憲柏. "Surface Hardness Treatment on SKD11 Die Steel by Atmospheric Pressure Plasma Jet." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/6es2cz.

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Chen, Tsung-yu, and 陳聰予. "The Investigation of Electrochemical Jet Machining on High Carbon Steel SKD11 with Abrasive." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/59802591265780497915.

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碩士<br>國立中央大學<br>機械工程學系<br>104<br>Electrochemical jet machining (ECJM) is one of the non-traditional machining technologies, the technology is by metal material removing through electrochemical reaction, the dissolved metal were carried away via jet flow from machining region. However, The process of abrasive slurry-jet machining (ASJM) is that erodes material using abrasive particles by a steam of fluid impinging on a target. ECJM has several advantages, such as difficult to wear electrode, removing part of workpiece by dissolved via jet, no residual stress and Metamorphic layer, high machin

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7

Chen, Chien-Fu, and 陳建富. "Investigation on Optimum Parameters of the Curved Surface in High Speed Cutting SKD11 Steel." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/09628861333089821451.

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碩士<br>國立屏東科技大學<br>機械工程系所<br>95<br>The purpose of this research is to find optimum cutting parameters in order to achieve the same roughness level as well as polishing surface in high speed cutting (HSC) curved surface, such that it can reduce machining time for mold fabrication. The comparison between theoretical and experimental roughness on the curved surface is conducted. An orthogonal array of Taguchi method is used to find the two sets of optimum cutting parameters for the average and maximum roughness of curved surface by HSC, separately. Then the observation of surface roughness and too

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Chung, Wan-Ting, and 鍾宛庭. "Power Effect on Surface Hardening of SKD11 Tool Steel by Atmospheric Pressure Plasma Jet." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/597tz4.

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9

Feng, Nian-Hua, and 馮念華. "Application of molybdenum copper based composite electrodes to EDM surface integrity of SKD11 tool steel." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/53930442922637114095.

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碩士<br>南台科技大學<br>奈米科技研究所<br>96<br>Electro discharge machining (EDM) has wildly applications among non-traditional manufacturing. However, some defects like pores, cracks and craters induced due to huge temperature gradient of dielectric during cooling process. The molten material which is not flushing away by dielectric will be re-solidified on the machined surface, and will deteriorate the mechanical properties of the materials. Therefore, the addition of molybdenum among composite electrode to accrue surface integrity after EDM has been discussed in this study. This study compares electrolyti

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10

Huang, Tsai-Te, and 黃再得. "Investigation on the Predictive Model for Tool Wear and Surface Roughness in Milling SKD11 Steel." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/81719051628529690669.

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碩士<br>國立屏東科技大學<br>機械工程系<br>91<br>The purpose of this study is to set-up two independently predictive models for tool wear and surface roughness in milling SKD 11 steel. Experiments conducting and preditive models developing are main scheme in this study. In experimental aspect, milling speed, feed and depth of cut are selected as the experimental parameters that have been arranged to 54 experimental points by using the orthogonal array of Taguchi method. Thus experiments can be carried out step by step following the arrangement. Followed each test tool flank wear and surface roughness are meas

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11

Hsu, Edward, and 許多. "The Study of EDM Hole Drilling Method for Measuring the Residual Stress in SKD11 Tool Steel." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/40969428700063664487.

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碩士<br>國立成功大學<br>機械工程學系<br>89<br>Due to its simplicity and precise in measurement, High-Speed Hole-Drilling Strain Gauge Method is widely used in industries for residual stress measurement. The standard procedure is specified in ASTM E837. However, this method is not applicable for stress measurement on materials with high hardness, high toughness or wear resistance where the severe wear of drilling tool lead to enormous deviations. EDM hole drilling instead, without concerning the limitation of material machinability, combined with strain gauge method for stress measurement is introduced here.

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Lin, Shih-Chin, and 林世進. "Study on the vacuum brazing between tungsten carbide and SKD11 tool steel using Ni-based filler material." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/2fhg55.

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碩士<br>國立臺北科技大學<br>製造科技研究所<br>99<br>In this study, Tungsten Carbide (VA90) was brazed with Tool Steel (SKD11) using three kinds of nickel-based brazing filler metals (Nicrobraz 150.Nicrobraz 130. Nicrobraz LM). The brazing temperature was 1040 °C for 25 min under 5*10^-4 torr vacuum pressure. During experimental procedual, these filler metals’ wettability and mechanical properties of the brazed joints were measured by micro structure observation, micro hardness testing, shear strength testing. Experimental results show that all of these three filler metals can achieve good wetting and spreadin

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13

Chuag, Kai-Chuan, and 莊凱權. "Optimization for Thermal Reactive Diffusion/Deposition of Nb、V and Cr on Cold –Work SKD11 Tool Steel." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/xssun3.

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碩士<br>國立高雄應用科技大學<br>模具工程系碩士班<br>103<br>Taguchi method was applied to analyze the optimum process parameters for thermal reactive diffusion/deposition (TRD) of Cr and Nb and V metallic elements on cold-worked tool steel of SKD11. The process parameters such as diffusion element, diffusion time and diffusion temperature were chosen as the controlling factors. The surface Vickens Hardness, coatings tickness, aluminium cold-forging weight loss and low carbon steel cold-forging weight loss were examined using an L9 orthogonal array. The analysis of variance (ANOVA) combined with confirmation experi

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Lin, Ting-Wei, and 林廷緯. "Application of Nanofluid/Ultrasonic Atomization MQL in Micro Milling for SKD11 Steel with using Multi-Objective Design." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/32346040406986264234.

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Wu, Guan-Ting, and 吳冠廷. "An Investigation on the Characteristics of Machining Parameters for Curved Surface in High Speed Milling SKD11 Steel." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/97200519936774757352.

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碩士<br>國立屏東科技大學<br>機械工程系所<br>104<br>The objective of this study was to machine SKD11 mold steel into a curved surface using high-speed milling and identify the optimal parameter combination. Experiments were performed using the Taguchi method with an L18 (21×37) array. The seven parameters selected in this study were nozzle distance, spindle speed, feed per edge, pitch of cut, depth of cut, air pressure, and cutting fluid flow rate. All of the parameters were divided into three levels except for nozzle distance, which was divided into two levels. After the experiment, we measured the curvature

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Yu, Chun-Cheng, and 余鈞正. "Study on the DLC Films of Oxynitriding-treated JIS SKD11 Tool Steel via Various Duty Cycles of DC-pulsed PECVD Process." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/x2gv94.

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碩士<br>國立臺北科技大學<br>材料科學與工程研究所<br>102<br>JIS SKD11 tool steel is a commonly used cold work tool steel. Due to its high wear resistance and appropriate toughness, SKD11 is often using for stamping molds, plastic molds and other multi-function items. To improve tool life, many studies have focused on surface treatment as a method of protecting the internal material. The oxynitriding process can form several kinds of nitride (Fe2N、Fe3N and Fe4N) and oxides (Fe2O3 and Fe3O4). Generally, the Fe3O4 layer of oxidation treatment can effectively protect and improve the erosion and corrosion resistance of

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Liu, Wei-Shu, and 劉威澍. "A Taguchi-Fuzzy Based Multi-Objective Optimization Study on Grinding High Hardness SKD11 Mold Steel with Nanofluid/Ultrasonic Atomization MQL System." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/05280127793751084440.

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HUANG, SHUN-WEI, and 黃舜韋. "The effects of graphite and copper electrode on EDMed surface of SKD11 cold tool steel by using Taguchi method and artificial neural network." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/29w8yg.

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碩士<br>南臺科技大學<br>機械工程系<br>105<br>In this study, the L16 Taguchi method was used to perform the discharge processing on SKD11 with graphite and red copper as electrode tools. The effects of different processing parameters and the electrode tools of different materials were observed with material removal rate, electrode tool wear rate, surface roughness and white layer thickness. In view of the processing results observed in the experiment, due to the use of Taguchi permutations and combinations, it is necessary to calculate the signal-to-noise ratio, that is, the S / N ratio, to discuss the mach

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Tu, Wei-hung, and 杜威宏. "A Study of Vacuum Carburized Low Carbon Steel and JIS SKD61 Tool Steel." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/80506218883392020139.

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碩士<br>大同大學<br>材料工程學系(所)<br>99<br>The vacuum carburizing of JIS S15C low carbon steel, 4 kind of low alloy low carbon steels and JIS SKD61 hot work mold steels have been studied in a vacuum furnace under a 5 torr acetylene atmosphere. The low carbon steels were carburized at 950 ~ 1050℃ for 30 ~ 120 min, oil quenched from the carburizing temperature to 80℃ and then tempered at 180℃ for 60 min. JIS SKD61 steels were carburized at 1000℃for 30 ~ 60 min, gas quenched from the carburizing temperature and then tempered at 200 ~ 600℃ for 120 min. The microstructures, austenite grain size, X-ray, QDP,

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Wu, Jyun-Wei, and 吳峻葳. "The Parameters Optimized Design for Cutting SKD61 Tool Steel." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/qkwag3.

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碩士<br>國立虎尾科技大學<br>機械與機電工程研究所<br>102<br>Cutting machining operations for molds, cutting tools, machine parts surface treatment requirements will continue to increase. Prolong life, reduce production costs and create higher profits, is the industry common goal. To cope with the cutting processing, save a lot of processing time versus costs and after machining surface roughness has become an important research topic. This research is the most important effects of cutting parameters: spindle speed, feed rate, axial and radial depth of cut four factors as the main subject discussed, according to t

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Lu-shih-hsiu and 盧仕修. "Taguchi Method to Optimize Vacuum Brazing Parameters for SKD61 Steel." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/83975583866160350215.

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碩士<br>大葉大學<br>機械與自動化工程學系<br>102<br>The manufacture of water cooling channels in mold cavity nowadays often uses drilling techniques. However, due to the limitation of technology, tooling of channels is under certain restrictions. Negative results can be non-refluxing channels and distant cavities that produce stains which are hardly removable or the inefficiency of cooling. Therefore, if weld process can be applied to overcome the channel tooling problem, the design can be more flexible and simply the circulation of cooling fluid and temperature control. Hot treatment of metal is usually cruci

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Zheng, Ming-Yuan, and 鄭茗元. "Investigation of the Milling Characteristics of Hardened SKD61 Tool Steel." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/cf2j26.

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碩士<br>國立成功大學<br>機械工程學系碩博士班<br>90<br>Abstract This thesis investigates the influence of shearing and ploughing mechanism on milling characteristics of the hardened SKD61 tool steel by the analytical force models on face milling and ball end milling processes. The effect of flank wear on shearing and ploughing cutting constants is then studied through milling experiments. According to the experiments results, it is shown that increase of the flank wear only affects the shearing cutting constant slightly , but the ploughing cutting constant increases significantly with the flank wear. The

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Wu, Tsung-Lin, and 吳宗霖. "The Optimal Design of Drill for Drilling SKD61 Tool Steel." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/sc5a7g.

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碩士<br>國立虎尾科技大學<br>創意工程與精密科技研究所在職專班<br>101<br>Due to the rapid development of cutting technology in recent years, various types of sophisticated cutting tools are required in the market. In which the drilling tool is one of the most widely used by theindustrial sector. First, we used grey relational analysis of the drilling parameters on the SKD61 tool steel. Theselected major characteristics indexes for performance evaluationof processes is tool wear, and the corresponding drilling parameters are core, relief angle, rake angle, chisel edge angle, drill type, drill speed and feed rate.Additiona

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GIU, LIU-HE, and 邱六合. "Effect of pulsative current density on boronized layer of SKD61 tool steel." Thesis, 1987. http://ndltd.ncl.edu.tw/handle/00010671244811542283.

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Zheng, Yao-Hung, and 鄭耀鴻. "The optimal design of micro End-mill for milling SKD61 tool steel." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/29av3q.

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碩士<br>國立虎尾科技大學<br>創意工程與精密科技研究所<br>97<br>In this study, the simulation analysis model for micro milling SKD61 mold steel has been developed by the finite element package software DEFORM. The process of chip formation can be understood by simulating. Orthogonal Arrays is used to experiments scheme of micro milling simulation. The influence of various parameters such as rake angles, relief angles, cutting speeds and feed per tooth have been investigated. The cutting force, tool maximum temperature, tool maximum temperature and tip distance, the contact length of tool and chip are the major perfor

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Lee, Yu-Ping, and 李鈺萍. "Characteristics of JIS SKD61 Tool Steel Coated CrAlSiN Films with Post Heat Treatment." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/brk5mu.

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碩士<br>大同大學<br>材料工程學系(所)<br>102<br>This study has used the cathodic arc deposition (CAD) system to coat CrAlSiN films on JIS SKD 61 tool steel with the different currents (50, 60, and 70 A) of Al-Si target. And then the coated specimens were further post heat-treated through using a special furnace in N2 atmosphere at 600 oC for 1 hour. Analysis of coating structure as well as properties (such as roughness, composition, and adhesion) and polarization tests were all performed to understand the effects of both Al-Si target current and post heat treatment on microstructure, properties, and corros

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施議訓. "A study of SKD61 GTAW weldments with cobalt-free maraging steel filler metal." Thesis, 1989. http://ndltd.ncl.edu.tw/handle/97565047250098673917.

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Wu, Chao-Feng, and 吳昭鋒. "The optimal design of end-mill for high speed cutting SKD61 tool steel." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/ze8t74.

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碩士<br>國立虎尾科技大學<br>創意工程與精密科技研究所<br>97<br>In recent years, ours industries develop very rapidly, and cutting technology grows very well. Machining variety of mechanical parts needs high-precision, quality and promotion of production efficiency. Hence the cutting technology is with the trend of high-speed and high feed rate. By high-speed machining, reduction of manufacturing process time, enhancing machining accuracy and production cost-down can be achieved. Due to development of high-speed machining, cutting tool manufacturers use different cutting tool materials in different cutting conditions

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CHUNG, MIN-HSIN, and 鍾旻欣. "Performance Analysis and Geometry Angle Design of End Mills for Milling SKD61 Die Steel." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/w4yp3y.

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碩士<br>國立虎尾科技大學<br>機械與電腦輔助工程系碩士班<br>106<br>Modern science and technology, some rely on the accuracy of the mold production requirements are also getting higher and higher, high efficiency and high wear resistance of the tool has become a very important part of the industry, the quality of the tool will directly affect the cutting performance, tool life expectancy and edge wear, edge grinding is the most important step to affect the performance of a tool, the cutting edge of the geometric angle of the complex, different processing materials, the geometry of the tool is not the same. 　　SKD61 is a

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Xu, Guo-Qing, and 許國慶. "Optimal process parameter design of end-mill for high speed cutting SKD61 mold steel." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/v3r3mg.

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碩士<br>國立虎尾科技大學<br>機械與機電工程研究所<br>96<br>This study would use the Taguchi method on the optimal processing parameter design of end-mell for high speed cutting SKD61 mold steel. The tool life is the major performance indexes of cutting process. The cutting processing paramaters of end-mill for high speed cutting are spindle speed, feed per tooth, radial depth of cut, axial depth of cut, helix angle, radial rake angle, radial relief angle, axial rake angle and axial relief angle. The optimal processing parameters could be evaluated by the Taguchi method. The results of confirmation experiments show

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Tsai, Meng-Chieh, and 蔡孟潔. "Selection of optimum cutting parameter for end-millin high speed cutting SKD61 mold steel." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/qn83ey.

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碩士<br>國立虎尾科技大學<br>創意工程與精密科技研究所在職專班<br>98<br>This study aims at producing an optimal cutting-parameter design for a finishing process for high-speed end milling using the grey relational analysis. The workpiece materials is SKD61 tool steel.The major performance indices chosen to evaluate the workpiece quality are surface roughness and surface waviness. The Taguchi method was used to produce parameter design for all experimental trials and the multiple performance characteristics(MPC)were evaluated using S/N ratio. The grey relational analysis was then used to convert the MPC into a single perf

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Yang, Chen-Yu, and 楊震宇. "Surface Treatment Effect on the Thermal Fatigue Behavior of JIS SKD61 Steels." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/4e8md2.

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碩士<br>大同大學<br>材料工程學系(所)<br>102<br>This study investigates in thermal fatigue resistance of the surface treatment effect on the thermal fatigue behavior of JIS SKD61 hot-work using different nitriding and nitrocarburizing processes. Selected specimens, austenitized at 1025°C for 20 min and then gas quenched to room temperature and tempered at 620°C, were gas and salt bath nitrocarburized for 2, 4, 6 and 8 hours and gas nitrided for 20 hours. Microstructure, microhardness, X-ray diffraction and thermal fatigue tests were conducted. The hardness values of SKD61 specimen with nitriding and nitroca

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Chang, Kai-Lan, and 張凱嵐. "A Study in Vacuum Heat Treatment of JIS SKD61 Hot-Work Steels." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/14066560477538995675.

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碩士<br>大同大學<br>材料工程學系(所)<br>99<br>Three hot-work steels, standard A、H and modified M, have been vacuum heat treated by using different quenching and tempering processes to observe the change of microstructure and corrosion resistance. Some specimens, austenitized at 1025℃ for 25 min, were gas quenched to room temperature and tempered at 200 ~ 650℃. Selected specimens were salt bath nitrocarburized at 580 ℃. The microstructures, X-ray diffration, heat crack and aluminum erosion tests were conducted. The results show that hardness of as-quenched specimens, austenitized at 1025℃ for 25 min, were 5

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Ho, W. S., and 何文賢. "The Study of Electrolytic Al2O3 Coating on Post Electroless Nickel Plating on SKD61 Mold Steel." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/26266043005922264690.

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碩士<br>國立中興大學<br>材料工程學研究所<br>88<br>The electrolytic deposition of alumina(Al2O3) coatings on post electrolytic Ni deposited SKD61 was conducted in an aqueous solution of alumina-nitrate[Al(NO3)3]. The better condition of alumina coatings on Ni alloy was determined by controlling different electrical-chemical parameter (solvent 、concentration、potential、time) and different sintering conditions. The followed characterizations were conducted by using Potentiostat、SEM/EDS、XRD、wear test and scratch test. From the left shifting of the polarization curves, it was known that the di

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Tang, Fuh-Chyun, and 湯富俊. "High Speed Milling of Hardened SKD61 Tool Steel Using TiAlN Coated Cemented Tungsten Carbide Tooling." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/02923979184303312711.

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碩士<br>國立清華大學<br>動力機械工程學系<br>88<br>The terms ''High Speed Machining'' (HSM) and ''High Speed Cutting'' (HSC) have been used recently to describe end milling with small diameter tools at high rotational speeds, typically 10,000-100,000 rpm. HSM was first applied in the aerospace industry for the machining of light alloys, notably aluminum. In recent years the mould and die industry has begun to use the technology for the production of components, including those manufactured from hardened tool steels. The study is performed an experimental investigation of high speed (5,000 - 15,000 rpm) ball

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顏耀義. "Investigation on the predictive model for surface roughness in high speed milling SKD61 tool steel." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/97627570521368073750.

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Lee, Charng-Yuh, and 李長昱. "A Study of Brazing Process for Tungsten Carbide and SKD61 Steel Joint Under Carburizing Atmosphere." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/45618050268085692608.

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碩士<br>大同大學<br>材料工程學系(所)<br>100<br>The brazing of Tungsten Carbide, WC-Co and WC-Ni, and SKD61 under carburizing atmosphere by Cu-9Sn foil has been studied. The microstructure observation, hardness and the shear strength of the brazed joint, the effect of the brazing time, interface reaction of filler and different Ni or Co content in the cermets on the joint behavior have been discussed in the article. The shear strength test results showed the max shear strength of the joints, WC-14%Ni/Cu-9Sn/SKD61, 313 MPa was derived at 1050°C 20 min. The line scan test showed Fe/Co rich phase were observed

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HUANG, WEN-RONG, and 黃文榮. "Multiple Thermal Reactive Diffusion/Deposition of Nb and V on SKD61 Tool Steel for Injection Screw." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/44605481455070797395.

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碩士<br>國立高雄應用科技大學<br>模具系碩士在職專班<br>102<br>The multiple thermal reactive diffusion/deposition (TRD) process was used to deposit Nb and V on hot-worked tool steel SKD61 which is applied for injection screw. The samples were pre-treated by nitriding and boronizing and followed with TRD of Nb and V at different temperatures of 950℃, 1000℃, and 1050℃. The normal and cross-sectional hardness were measured by HV hardness tester. Indentation of HRC hardness was used to examine the adhesion property of the coatings. The polarization curve measurement identified the corrosion behavior of multiple TRD samp

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Chen, Chin-Hsin, and 陳進興. "Influence of High Speed Milling Parameters on Surface Roughness of SKD61 Hot Work Die Steels." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/87416196045189075987.

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碩士<br>國立彰化師範大學<br>工業教育與技術學系<br>102<br>This thesis aimed to investigate the hot working tool steel SKD61 (DHA-WORLD by Datong steel Co., Ltd., Japan), which is commonly used for die casting molds, as a research tool of milling experiments. In the study a physical workpiece was used to conduct milling experiments and then to obtain the optimum parameters for high speed milling. First, the hot work die steels were heat treated to hardness of HRc48-50. Four-flute tungsten carbide end mills with round nose, named ψ6-LH2BZC-060, were utilized as the experimental cutting tools, which are coated a lay

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Sie, Ming-Fu, and 謝名富. "Investigation the Optimized Parameters of the Saddle-Type Curved Surface in High Speed Cutting SKD61 Mold Tool Steel." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/91688891698056615778.

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碩士<br>國立屏東科技大學<br>機械工程系所<br>96<br>In this paper a manufacturing process is investigated for the machined surface roughness to meet polishing effect of a saddle-type curved surface in high speed milling SKD61 mould steel in order to reduce the machining time for mould fabrication. Firstly, a comparison for the diversity of the curved surface roughness between the theoretical derived and experimental results is conducted. The smaller-the-better characteristic of Taguchi method is used to arrange experiments for high speed machining the curved surface, such that the optimum parameters combination

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Chu, Chi-Chen, and 朱致成. "Effects of Different Quenching Temperatures and Different Holding Time on the Mechanical Properties of SKD61 and Its Modified Steels." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/72425798373978517537.

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碩士<br>國立臺灣大學<br>機械工程學研究所<br>99<br>This article of this study is to investigate the effect of different heat treatment parameters and different alloy elements on the microstructure and mechanical properties such as hardness and impact value of SKD61 and its modified steels. The results show that the modified steels containing higher alloy elements have higher hardenability and possess higher hardness after quenching at different temperatures and in different holding time. Steels with higher hardness after quenching will not always have higher hardness after tempering. It is more relevant to the

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Lin, Ying-chih, and 林盈志. "Research on the Z-axis Design of a Meso-scale 3-axis Milling Machine and the Optimal Micro-milling Parameters for the Tool Steel SKD61." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/89845645777639205946.

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碩士<br>國立臺灣科技大學<br>機械工程系<br>97<br>The purpose of this study includes two parts, one is the Z-axis design of a meso-scale 3-axis milling machine, the other is the determination of the optimal micro-milling parameters using a high speed spindle for cutting the tool steel SKD61. Regarding the Z-axis design of a meso-scale 3-axis milling machine, it mainly includes a pagoda structure, the high speed air bearing spindle, two ultrasonic motors, a laser diffraction grating interferometer (LDGI), and a counter-balance system for the spindle. The optimal geometrical dimensions of the pagoda structure ha

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Kai-ShiangYang and 楊凱翔. "Surface Roughness Improvement by Using CW-Style Laser Polishing Techniques and the Microstructural and Tribological Studies of the Worked Zone of the SKD61 Tool Steel." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/96827104852300601776.

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碩士<br>國立成功大學<br>機械工程學系<br>103<br>In the present study, the surface polishing of SKD61 tool steel specimens was carried out on a fiber laser system, The laser operating conditions for all specimens were designed in three stages to define the workable realm of energy density step by step and minimize the mean areal surface roughness (Sa) as small as possible. The experiments of three stages includes Taghchi method, all factors experiments and one factor at a time method. And four adjusted parameters of laser polishing are the focal offset, laser power, scanning velocity and hatch distance. By me

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