A comparative investigation on flank wear when turning three cast irons

Tooptong, Sirisak; Park, Kyung Hee; Kwon, Patrick

doi:10.1016/j.triboint.2017.12.025

Cited by 33 publications

(14 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…SGI with lower hardness and less pearlite has lower cutting force compared with FGI. Tooptong et al [6] compared flank wear when turning FGI, CGI, and SGI under dry conditions. They found the main reason for the poor machinability of CGI and SGI is that the cutting temperature is much higher than FGI.…”

Section: Introductionmentioning

confidence: 99%

Effects of Microstructure, Mechanical and Physical Properties on Machinability of Graphite Cast Irons

Ren

Li³

et al. 2020

Metals

View full text Add to dashboard Cite

Flake (FGI) and spheroidal (SGI) graphite cast irons are often used to produce workpieces, which often need to be machined. Machinability differences under various machining methods are the basis for choosing machining equipment and technology. In this work, FGI and SGI were used to produce tractor front brackets, and the machinability of both materials under turning and drilling processes was compared. The machinability (turning and drilling ability) has been evaluated in terms of machining load, chips shape, surface roughness, and tool temperature. The influence of materials microstructure and thermal conductivity on the machinability was analyzed. In the turning process, the cutting force and its standard deviation of the FGI were larger than the SGI due to the higher volume fraction of pearlite. The surface roughness was similar in both materials. In the drilling process, the even action of the friction and cutting force on the bit turned into similar drilling loads for both materials. Higher friction and lower thermal conductivity caused a higher bit temperature in SGI drilling compared to FGI. The chip breaking was worse in SGI drilling, where the longer chips scratched the internal surface of the holes, resulting in the higher surface roughness.

show abstract

Section: Introductionmentioning

confidence: 99%

Effects of Microstructure, Mechanical and Physical Properties on Machinability of Graphite Cast Irons

Ren

Li³

et al. 2020

Metals

View full text Add to dashboard Cite

show abstract

“…Indeed, it is necessary to choose the cutting parameters correctly to decrease the wear and consequently increase the tool life. Tooptong et al [2] affirm that the rise in the cutting temperature due to the increase of the cutting speed leads to the degradation of the cutting tool material. Thus, different coating techniques have been developed to improve the resistance of the tool, such as chemical vapor deposition (CVD) [3], physical vapor deposition (PVD) [4,5] and sol-gel [6,7], allowing the fabrication of different coating materials.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, at moderate cutting speeds, there is the formation of built-up edge formation, abrasive and adhesive wear [24]. Recently, the CGI turning tests have been studied by many authors, as Tooptong et al [2]; Abdoos et al [24]; Yamamoto et al [25]; Heep et al [26]. Tooptong et al [2] investigated the flank wear when turning three cast irons (flake graphite iron (FGI), compacted graphite iron (CGI) and nodular graphite iron (NGI)) under dry conditions.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, the CGI turning tests have been studied by many authors, as Tooptong et al [2]; Abdoos et al [24]; Yamamoto et al [25]; Heep et al [26]. Tooptong et al [2] investigated the flank wear when turning three cast irons (flake graphite iron (FGI), compacted graphite iron (CGI) and nodular graphite iron (NGI)) under dry conditions. Regardless of the presence of coating on the surfaces of the insert, the authors concluded that the main reason for the poor machinabilities (flank wear) of the CGI (and NGI as well) is that the generated cutting temperatures are much higher than for the FGI.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Characterization of Ceramics Coatings Processed by Sol-Gel for Cutting Tools

et al. 2019

View full text Add to dashboard Cite

In order to obtain better cutting tool performance, the coatings appear as an alternative in the machining process. The goal of the coating is to improve tribological conditions in the chip-tool and tool-workpiece interfaces. On the other hand, the use of coated tools decreases the wear of the tools. This study discusses the ceramic coatings characterization deposited in WC tools. The Al2O3 and TiO2 films present properties such as thermal stability, chemical inertia, high hardness, and good mechanical properties. These coatings were prepared by sol-gel technology. The results indicated that the multilayer coating presents better adhesion on the substrate. Moreover, lower coefficients of friction were found for the coated tools. The analysis of variance (ANOVA) was used to evaluate the influence of the cutting parameters and tool coating on the cutting force. The lower cutting force was obtained using the multilayer-coated tool. Thus, the sol-gel method appears as a novel technique to deposit coating in the WC tools to improve their performance.

show abstract

“…Deriving equation 5with respect to speed and equating it to zero, the lowest cost speed was obtained as equation (6) .…”

mentioning

confidence: 99%

Effect of the Feed Rate and Depth on Machining Cost in Cutting Process

Salcedo¹,

Restrepo²,

Ochoa³

2018

IJET

View full text Add to dashboard Cite

In this paper we analyzed the effect of feed rate and depth parameters on machining costs in production. The process used was the turning of parts with cast iron base material. For this study, the feed rate between 0.2 mm and 0.8 mm and the depth in the range of 1 mm to 4 mm are varied, allowing to find parameters that affect the final finish of the part, such as the cutting speed and the working conditions of the machine. Other important parameters defined in this process are the process times that directly influence the final costs and how production can be maximized. With this paper is shown the increase in cost in the machinability of turning in a máximum production system. Keywords-Feed Rate, depth, machining cost, cutting process. I. INTRODUCTION Foundryisoneof the most demanding and energy-intensive processes in which there are currently six different stages: casting, alloying, casting, pouring, solidification and finishing[1]. The casting process has not yet reached its full potential in limiting losses due to tilting, tipping, lost foam and other factors for the material [2-3].Therefore, this process clearly depends on the viscosity of the fluid, but if the demand includes the precise reproduction of mould details and overall dimensional accuracy, additional factors such as flow analysis affected by the rheological properties of the sludge, wetting, melting pressure and high temperatures should be considered, leading to a variety of part defects that affect subsequent machining processes to achieve the final finish[4-5]. If parts are defective it presents many challenges to operators and personnel involved in the production process, because the margin of error for a part's operating specifications is very limited[6], and if it is so imperfect it may reach an unrecoverable point, directly causing loss of money and time affecting the company's productivity[7-8]. In order to mitigate this problem a little, it has been proposed to analyze the operation ranges to which the specialized machinery and the production of parts must work, evaluating factors such as the cutting speed, the useful life of the parts for the final finish, the revolutions per minute of the machinery, among others[9]; presenting an area of efficiency where production gains are obtained at different advances and depths in the machining process[10]. The main contribution of this work is to present a methodology that analyzes the influential parameters in the production of the machining of the parts by turning, allowing to analyze the ranges in which a lathe must be operated so that there are no economic losses in the mass production of a specific part. Allowing the scientific community to focus on optimizing another stage ofthesmeltingprocess. II. METHODOLOGY The following is a description of the process and the fundamental equations for the analysis of costs and time in the turning process for grey foundries, allowing the identification of the parameters that have the greatest impact on this machining process. 2.1. Process description In o...

show abstract

A comparative investigation on flank wear when turning three cast irons

Cited by 33 publications

References 25 publications

Effects of Microstructure, Mechanical and Physical Properties on Machinability of Graphite Cast Irons

Effects of Microstructure, Mechanical and Physical Properties on Machinability of Graphite Cast Irons

Characterization of Ceramics Coatings Processed by Sol-Gel for Cutting Tools

Effect of the Feed Rate and Depth on Machining Cost in Cutting Process

Contact Info

Product

Resources

About