Wear Mechanism of Si3N4/TiC Micro-Nano-Composite Ceramic Tool in Dry Machining of Nodular Cast Iron

2013 ◽  
Vol 319 ◽  
pp. 79-83
Author(s):  
Zhi Jie Lü ◽  
Ming Feng Ding ◽  
Jun Zhao
Keyword(s):  
Wear Resistance ◽  
Cast Iron ◽  
Tool Wear ◽  
Cutting Tool ◽  
Composite Ceramic ◽  
Nodular Cast Iron ◽  
Dry Machining ◽  
Ceramic Tool ◽  
Nano Composite ◽  
Ceramic Cutting Tool

In this paper, a type of Si3N4/TiC micro-nano-composite ceramic tool materials were fabricated via hot pressing technique by adding Si3N4 and TiC nanoparticles and with Al2O3 and Y2O3 as additives. Tool wear in dry machining of nodular cast iron with Si3N4/TiC micro-nano-composite ceramic tool were investigated, in comparison with a commercial Sialon ceramic tool. For determination of the wear resistance, the workpiece which is prepared to be used in the experiment, 400 mm in length and 120 mm in diameter, is machined in lathe. Turning experiments were carried out at three different cutting speeds, which were 110, 175, and 220 m/min respectively. Feed rate (f) and depth of cut (ap) were kept fixed at 0.1mm/rev and 0.5mm. The results show that the two types of cutting tools have similar cutting tool wear behavior, while the Si3N4/TiC micro-nano-composite tool exhibits a better wear resistance than that of the Sialon tool. The wear of Si3N4/TiC micro-nano-composite ceramic cutting tool is mainly dominated by the abrasion, while the wear of Sialon ceramic cutting tool is dominated by the abrasive action, microcracking and pullout of grains.

Cutting Force, Temperature and Wear Behavior in Dry Machining of Nodular Cast Iron with Si3N4/TiC Micro-Nano-Composite Ceramic Tool

2013 ◽  
Vol 711 ◽  
pp. 267-271 ◽  
Author(s):  
Zhi Jie Lü ◽  
Xian Chun Song ◽  
Ming Feng Ding ◽  
Yong Hui Zhou
Keyword(s):  
Cast Iron ◽  
Wear Rate ◽  
Cutting Tool ◽  
Wear Behavior ◽  
Cutting Speed ◽  
Nodular Cast Iron ◽  
Depth Of Cut ◽  
Dry Machining ◽  
Ceramic Tool ◽  
Ceramic Cutting Tool

In this paper, a type of Si3N4/TiC micro-nanocomposite ceramic tool materials were fabricated via hot pressing technique by adding Si3N4 and TiC nanoparticles. Cutting forces, temperature and wear behavior in dry machining of nodular cast iron with Si3N4/TiC micro-nanocomposite ceramic tool were investigated, in comparison with a commercial Sialon ceramic tool. Turning experiments were carried out at three different cutting speeds, which were 110, 175, and 220 m/min. Feed rate ( f ) and depth of cut (ap) were kept fixed at 0.1 mm/rev and 0.5 mm. The results show that the radial thrust force (Fy) become the largest among the three cutting force components (Fx , Fy and Fz), and Fy is the most sensitive to the changes of feed rate and depth of cut. In dry cutting of nodular cast iron, the cutting tool temperature rise rapidly with increase in cutting speed. The cutting temperature reach nearly 1000°C at the cutting speed of 220 m/min. The two types of ceramic tools have similar cutting performance, while the Si3N4/TiC micro-nanocomposite tool exhibits a better cutting performance than that of the Sialon tool. The wear rate of Si3N4/TiC micro-nanocomposite ceramic cutting tool is mainly dominated by the abrasion, while the wear rate of Sialon ceramic cutting tool is dominated by the abrasive action, and pullout of grains.

Machinability of Nodular Cast Irons: Part III—Tool Life of Carbide and Ceramic Cutting Tools

1964 ◽  
Vol 86 (2) ◽  
pp. 141-149 ◽  
Author(s):  
K. Hitomi ◽  
G. L. Thuering
Keyword(s):  
Cast Iron ◽  
Tool Life ◽  
Cutting Tool ◽  
Cutting Tools ◽  
Nodular Cast Iron ◽  
Cast Irons ◽  
Tool Materials ◽  
Ceramic Cutting Tool ◽  
High Speeds ◽  
Cutting Tool Materials

Three grades of nodular cast iron (60, 80, and 100) were tested to determine the tool life of carbide and ceramic cutting tool materials. Tool life for all tools was much greater for grade 60 than for 80 and 100. Cast iron cutting grade carbide K6 was superior to steel cutting grade K3H, and at high speeds the ceramic was superior.

Influences of Sintering Process on the Microstructure and Mechanical Behavior of ZrO2 Nano-Composite Ceramic Tool and Die Material

2010 ◽  
Vol 154-155 ◽  
pp. 1356-1360 ◽  
Author(s):  
Ming Dong Yi ◽  
Chong Hai Xu ◽  
Jing Jie Zhang ◽  
Zhen Yu Jiang
Keyword(s):  
Mechanical Properties ◽  
Ceramic Material ◽  
Composite Ceramic ◽  
Sintering Process ◽  
Ceramic Tool ◽  
Nano Composite ◽  
Pure Zro2 ◽  
Die Materials ◽  
Die Material ◽  
Composite Ceramic Material

A new ZrO2 nano-composite ceramic tool and die material was prepared with vacuum hot pressing technique. The effects of sintering parameters on the nano-composite ceramic tool and die materials were studied. The results indicated that the mechanical properties of ZrO2 nano-composite ceramic tool and die material with the additions of TiB2 and Al2O3 are higher than that of the pure ZrO2 ceramic material. Sintering at 1100 for 120min could improve the density and mechanical properties of ZrO2 nano-composite ceramic material. The flexural strength, fracture toughness and hardness with the optimum sintering parameters can reach 878MPa, 9.54MPa•m1/2 and 13.48GPa, respectively, obviously higher than that with non-optimum sintering parameters.

Cutting Performance and Wear Mechanisms of an Al2O3-Based Micro-Nano-Composite Ceramic Tool

2010 ◽  
Vol 443 ◽  
pp. 244-249 ◽  
Author(s):  
Yong Hui Zhou ◽  
Jun Zhao ◽  
Xing Ai
Keyword(s):  
Failure Modes ◽  
Cutting Tools ◽  
Tool Material ◽  
Composite Ceramic ◽  
Cutting Performance ◽  
Nano Particles ◽  
Ceramic Tool ◽  
Nano Composite ◽  
Micro Particles ◽  
1045 Steel

An Al2O3-based composite ceramic cutting tool material reinforced with (W, Ti)C micro-particles and Al2O3 micro-nano-particles was fabricated by using hot-pressing technique, the composite was denoted as AWT. The cutting performance, failure modes and mechanisms of the AWT micro-nano-composite ceramic tool were investigated via continuous turning of hardened AISI 1045 steel in comparison with those of an Al2O3/(W, Ti)C micro-composite ceramic tool SG-4 and a cemented carbide tool YS8. Worn and fractured surfaces of the cutting tools were characterized by scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). The results of continuous turning revealed that tool lifetime of the AWT ceramic tool was higher than that of the SG-4 and YS8 tools at all the tested cutting speeds. The longer tool life of the AWT composite ceramic tool was attributed to its synergistic strengthening/toughening mechanisms induced by the (W, Ti)C micro-particles and Al2O3 nano-particles.

Mechanical Properties and Microstructure of Self-Lubricating Ceramic Cutting Tool Materials

2004 ◽  
Vol 471-472 ◽  
pp. 221-224 ◽  
Author(s):  
Jian Xin Deng ◽  
Tong Kun Cao ◽  
Jia Lin Sun
Keyword(s):  
Mechanical Properties ◽  
Cutting Tool ◽  
Solid Lubricants ◽  
Polished Surface ◽  
Ceramic Tool ◽  
Tool Materials ◽  
Ceramic Cutting Tool ◽  
Micro Cracks ◽  
The Difference ◽  
Cutting Tool Materials

Al2O3/TiC ceramic tool materials with the addition of solid lubricants such as BN and CaF2 were produced by hot pressing. Effect of the solid lubricants on the microstructure and mechanical properties has been studied. Results showed that AlN phase resulted from the reaction of Al2O3 with BN was formed in Al2O3/TiC/BN composite after sintering. Significant micro-cracks resulted from the residual stress owing to the difference in the thermal expansion coefficient were found on the polished surface, and caused large mechanical properties degradation. While Al2O3/TiC/CaF2 composite showed higher flexural strength, fracture toughness, and hardness compared with that of Al2O3/TiC/BN composite owing its porosity absent and finer microstructure.

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