طراحی تجربی و تجزیه و تحلیل عملکرد از ابزار کاربید با پوشش قلع در مواجهه با فرز فولاد ضد زنگ
|کد مقاله||سال انتشار||مقاله انگلیسی||ترجمه فارسی||تعداد کلمات|
|27658||2002||7 صفحه PDF||سفارش دهید||2766 کلمه|
Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)
Journal : Journal of Materials Processing Technology, Volume 127, Issue 1, 20 September 2002, Pages 1–7
A preliminary experiment and performance analysis of a TiN-coated carbide tool in the face milling of stainless steel is given first. Then, the experimental design of using the Taguchi method is employed to optimize the cutting parameters. An orthogonal array, the signal-to-noise (S/N) ratio, and the analysis of variance (ANOVA) are employed to study the performance characteristics in face milling operations. Through this study, not only can the range of cutting parameters for face milling stainless steel be obtained, but also the optimal cutting parameters can be found.
The face milling process is used frequently in industrial machining to machine large, flat surfaces in a very fast and precise way. D’Errico and Guglielmi  presented the influence of physical vapor deposition (PVD) coatings on the flank wear of a cermet tool when milling a normalized carbon steel. Gu et al.  employed three types of coatings, TiN, TiALN and ZrN, coated by the PVD process face, in the milling of 4140 preheat treated steel, the wear mechanisms of attrition, abrasion, mechanical fatigue, and thermal fracture being identified and represented by wear maps. Diniz and Filho  reported the influence of the relative positions of the tool and the workpiece on the tool life and surface finish of the AISI 1045 steel in the process of the face milling of a flat surface. Su et al.  used the Taguchi method to analyze and optimize titanium carbonitride films on a cemented carbide indexable milling cutter when machining AISI 1045 medium carbon steel. Narutaki et al.  used a zirconia toughness alumina ceramic tool for the high speed face milling of plain carbon steel, S45C. Stainless steel materials play an extremely important role in the engineering industry, in the manufacturing of medical materials and in other high-corrosion applications. The machining of stainless steel materials generally gives short tool lives, a limited metal removal rate, large cutting forces and high power consumption. This is due to their high temperature strength, rapid work-hardening during machining and reactivity with most tool materials at high cutting speed. Sun et al.  described the interface adhesion behavior between the cutter and the workpiece when austenitic stainless steel is milled by a cemented carbide cutter. It was shown that: (1) at medium cutting speed, an adhesive layer is formed between the rake face and the chip; (2) at low cutting speed, no adhesive layer exists on the rake face; (3) at high speed, a crater is formed on the rake face, and adhesion does not occur. Balazinski and Ennajimi  presented the results of their experimental studies on the influence of feed variation on tool wear during the face milling of stainless steel. Their experimental results show that it is possible to substantially increase the tool life with proper variation of the cutting feed rate throughout the cutting process. Almost all machining processes are similar in producing common-burrs. The burr phenomenon is very serious, especially in the machining of difficult-to-cut materials. Stein and Dornfeld  reported the burr height, thickness and geometry in the drilling of 0.91 mm diameter holes in stainless steel 304L. Dornfeld et al.  investigated four distinct burr types when drilling titanium alloy plates. This paper is organized in the following manner. A preliminary experiment and performance analysis is given first. Then, the experimental design of using Taguchi method  is described. The optimal cutting parameters with regard to performance indexes such as tool life and burr height are considered. Finally, the paper concludes with a summary of the study.
نتیجه گیری انگلیسی
The following conclusions can be drawn based on the experimental results of this study: 1. Although the burr height increases linearly with the cutting process at low cutting speed, it is transitional at medium or high cutting speed. 2. The burr height in the cutting process is stable, then transitional, and then increases linearly, with the increase of the depth of cut. 3. The percentage contributions of the cutting speed, feed rate and depth of cut for removed volume are 88.77, 1.04 and 9.92, respectively. 4. The optimum conditions for the removed volume are cutting speed 120 m/min; feed rate 180 mm/min; depth of cut 1.0 mm. 5. The percentage contributions of the cutting speed, feed rate and depth of cut for burr height are 52.43, 37.53 and 4.31, respectively. 6. The optimum conditions for burr height are cutting speed 230 m/min; feed rate 200 mm/min; depth of cut 1.2 mm.