Experiment on Optimal Selecting for Cutting Tools in Milling of High Hardened Steel

2012 ◽  
Vol 723 ◽  
pp. 305-310
Author(s):  
Kun Peng Zhang ◽  
Cheng Yong Wang ◽  
Y.N. Hu ◽  
Y.X. Song
Keyword(s):  
Cutting Tools ◽  
Cutting Temperature ◽  
High Hardness ◽  
Hardened Steel ◽  
Tool Geometry ◽  
Coated Tools ◽  
Processing Cost ◽  
Cutting Vibration ◽  
Milling Characteristics ◽  
Cutting Experiments

In this paper, with milling characteristics of high hardness hardened steel, we choice six different coated tools to made cutting experiments on high hardness hardened steel Cr12MoV (HRC65). In this stage, through the analysis of cutting force, cutting temperature, cutting vibration, machined quality and tool wear, we have elected the preferred tool and tool geometry parameters for this processing stage. The results of the study show that: TiAlSiN is the most suitable for Cr12MoV (HRC65), which helps to improve cutting processing productivity, prolong tool life, and enhance processing quality and reduce the processing cost.

Wear and Breakage Features of Multi-Coated Tools in Turning Hardened Steel

2010 ◽  
Vol 44-47 ◽  
pp. 2168-2171
Author(s):  
Zhi Gang Hou ◽  
Jun Zhao ◽  
Li Qiang Xu ◽  
Zhong Guo
Keyword(s):  
Experimental Method ◽  
Wear Mechanism ◽  
Surface Crack ◽  
Cutting Tools ◽  
Xrd Analysis ◽  
Hardened Steel ◽  
Coated Tools ◽  
Coated Tool ◽  
Breakage Mechanism ◽  
Cutting Experiments

The wear and breakage features of TP1000 multi-coated tool were investigated through a series of cutting experiments. These experiments were performed for turning hardened 45 and T10A steel by orthogonal experimental method. SEM and XRD analysis were conducted on cutting tools. The results show that both wear and breakage occur when turning hardened 45 steel. The major wear mechanism is abrasion and oxidation, and the major breakage mechanism is surface spall. When turning hardened T10A steel, the main disability is breakage, and the major breakage mechanism include surface crack, spall and tipping.

Research on High-Speed Cutting of Cr12MoV Hardened Steel - A Review

2020 ◽  
Vol 15 ◽  
Author(s):  
Fei Sun ◽  
Guohe Li ◽  
Qi Zhang ◽  
Meng Liu
Keyword(s):  
High Speed ◽  
Cutting Temperature ◽  
High Hardness ◽  
High Strength ◽  
Hardened Steel ◽  
Parameters Optimization ◽  
Future Research ◽  
High Speed Machining ◽  
Machined Surface ◽  
Stamping Die

: Cr12MoV hardened steel is widely used in the manufacturing of stamping die because of its high strength, high hardness, and good wear resistance. As a kind of mainstream cutting technology, high-speed machining has been applied in the machining of Cr12MoV hardened steel. Based on the review of a large number of literature, the development of high-speed machining of Cr12MoV hardened steel was summarized, including the research status of the saw-tooth chip, cutting force, cutting temperature, tool wear, machined surface quality, and parameters optimization. The problems that exist in the current research were discussed and the directions of future research were pointed out. It can promote the development of high-speed machining of Cr12MoV hardened steel.

scholarly journals Modelling and prediction of cutting temperature in the machining of H13 hard steel of multi-layer coated cutting tools

2021 ◽  
Author(s):  
Jingjie Zhang ◽  
Zhanqiang Liu ◽  
Chonghai Xu ◽  
Jin Du ◽  
Guosheng Su ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Cutting Tools ◽  
Cutting Temperature ◽  
Simulated Data ◽  
Analytical Models ◽  
Interface Temperature ◽  
Transfer Model ◽  
Process Data ◽  
Mono Layer ◽  
Coated Tools

Abstract The coating effect on the cutting temperature has long been a hot topic in understanding heat transfer mechanism in machining coated tools, and especially the multi-layer coated tools. For multi-layer coated tools, the coating structure, coating thickness and coating material will affect the cutting temperature of the tool. This paper is devoted to the cutting temperature in dry turning of H13 hardened steel with multi-layer coatings. New analytical models for estimating coating temperature and coating-substrate interface temperature were proposed. The multi-layer coating can be equivalent to mono-layer composite coating, which applies equivalent coating layer approach, and was developed to estimate the cutting temperature in turning by heat transfer model of mono-layer coated tool. The analyzed results were compared to appropriate experimental process data using thermocouples and FEM simulated data. The models were verified can accurate temperature under the same cutting conditions for two multi-layer coated tools.

A Novel Sensor Using Tool Coating and Its Substrate as Thermocouple to Measure Cutting Temperatures

2010 ◽  
Author(s):  
Shijun Zhang ◽  
Zhanqiang Liu
Keyword(s):  
Cutting Tools ◽  
Cutting Temperature ◽  
Manufacturing Industries ◽  
Manufacturing Processes ◽  
Thermal Impact ◽  
Novel Technology ◽  
Tool Coating ◽  
Coated Tool ◽  
1045 Steel ◽  
Cutting Experiments

The ability to monitor in real time, the thermal impact of sensors on cutting tools has been very appealing to the manufacturing industries. Several methods have been used to obtain tool-chip/workpiece contact temperature. However, special sensors to monitor coated tool temperatures are far and few-in-between. In this paper, the sequence of fabricating a novel coating-substrate thermocouple and calibration setups to measure cutting temperature was proposed. The cutting experiments were carried out under different cutting conditions for 1045 steel. The experimental results showed that this novel technology for measuring cutting temperature is valid in manufacturing processes with coated cutting tools.

Research of Technology of Cutting Hardened Steel in HSM

2011 ◽  
Vol 338 ◽  
pp. 701-705
Author(s):  
Xiao Jun Zhu ◽  
Wen Sheng Xia
Keyword(s):  
High Speed ◽  
Cubic Boron Nitride ◽  
Cutting Tools ◽  
Tool Material ◽  
Main Tool ◽  
Hardened Steel ◽  
Detection Methods ◽  
Tool Geometry ◽  
High Speed Milling ◽  
Coated Cemented Carbide

The key technology of the cutter that cutting hardened steel was researched by high speed milling machining method. At first ,three cutting elements of high speed milling machining was narratived, and we can obtain the principle of selection of parameters of cutting velocity, feed per tooth, longitudinal cutting depth and cutting width of axial, etc. With HSM ,we discussed the performance and selection points of tool material of coated cemented carbide, ceramic, cubic boron nitride , synthetic diamond and so on, and obtained the effect of the main tool geometry for the cutting process in HSM. The second, it analysised type and reason of damage of high speed cutting tools, and introduced three detection methods of tools. Finally, it was summarized and concluded.

Effect of Work Material’s Hardness on Cutting Performance of TiAlN- and CrAlN-Coated Cutting Tools

2015 ◽  
Vol 656-657 ◽  
pp. 231-236
Author(s):  
Risa Koda ◽  
Hiroshi Usuki ◽  
Masahiro Yoshinobu ◽  
Kana Morishita ◽  
Shuho Koseki ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Brinell Hardness ◽  
Cutting Tools ◽  
High Hardness ◽  
Superior Performance ◽  
End Mills ◽  
Arc Evaporation ◽  
Cutting Experiments ◽  
Cutting Speeds ◽  
Selection Of

For better selection of coated cutting tools, TiAlN (Ti50Al50N) and CrAlN (Cr50Al50N) coatings were deposited onto ball-nose and square end mills using arc evaporation, and their cutting performances were evaluated using steel workpieces of various hardnesses. In particular, cutting tests were performed on three types of workpieces, made from S50C, SKD61, and SKD11 steels, having Brinell hardness numbers of HB220, HRC40, and HRC60, respectively. The results of the cutting experiments were elucidated and discussed in terms of the mechanical properties and anti-oxidation resistances of the different coatings. The results revealed that TiAlN-coated square end mills at high cutting speeds (V = 200 m/min ) had superior performance when used on steels with high hardness (SKD11), whereas CrAlN-coated ball-nose end mills were superior when used on low hardness steel (S50C). Therefore, CrAlN-coated ball-nose end mills are concluded to be suitable for the machining of low hardness steels, whereas TiAlN-coated square end mills are preferable for the machining of high hardness steels (SKD11).

Performance of γ-Al2O3-Based Coatings and Environmentally Friendly Lubricants in Cutting Operations of Difficult-to-Machine Materials

2010 ◽  
Vol 438 ◽  
pp. 203-209 ◽  
Author(s):  
Fritz Klocke ◽  
Susanne Eva Cordes ◽  
Klaus Gerschwiler
Keyword(s):  
Removal Rate ◽  
Cutting Tools ◽  
Aluminium Oxide ◽  
High Hardness ◽  
Cutting Performance ◽  
Austenitic Steels ◽  
Oxide Coatings ◽  
Coated Tools ◽  
Milling Operations ◽  
Long Time

The machining of difficult-to-cut materials such as nickel-based alloys and austenitic steels are focus in a lot of investigations for a long time. When machining these materials, different effects are overlapping. Approaches to overcome the several problems when machining these materials can be an appropriate coating system for the cutting tool as well as innovative lubricants. Coatings are one of the most common possibilities to improve the cutting performance of tools, notably the tool life as well as the material removal rate. Aluminium oxide coatings made by Physical Vapour Deposition (PVD) technology is a promising coating material for cutting operations. Due to its outstanding characteristics, such as high hardness, high thermal stability and low tendency to adhesion aluminium oxide is a predestined material for the machining of difficult-to-cut materials. In combination with innovative environmental friendly lubricants, the performance of cutting tools is increasing significantly. The objective of this work is to study the wear mechanisms and the cutting performance of aluminium oxide based coated tools in turning, drilling and milling operations.

Laboratory Experiment of New Cutting Materials in Milling Processes

2014 ◽  
Vol 611 ◽  
pp. 467-471 ◽  
Author(s):  
Igor Vilček ◽  
Jozef Kováč ◽  
Jaroslava Janeková
Keyword(s):  
Cubic Boron Nitride ◽  
Cutting Tools ◽  
High Hardness ◽  
Hardened Steel ◽  
Production Costs ◽  
Machining Processes ◽  
Hard Materials ◽  
Removal Processes ◽  
Conventional Machining ◽  
Cutting Tool Materials

The development of manufacturing technology is mostly given by economics, environmental trends and the development of cutting materials and machine tools. Manufacturing is a significant part of the worldwide economy. Machining (material removal processes) represents major part of production costs. This paper yield inquiries into the hard and precise milling with a focus on force effects in experimental machining, tool wear and final surface qualities (roughness, micro hardness). The precision machining of hardened steel differs from conventional machining in terms of the hardness of the workpiece materials and the cutting tool materials that are required. Hard materials are characterized by high hardness (> 45 HRC) and abrasiveness. Machining processes require cutting tools of much higher hardness and also higher resistance of the abrasive wear. Recently developed cubic boron nitride (CBN) and coated sintered carbides cutting tools are considered to have the ability of cutting such as steel. CBN cutting tools show good performance during machining of the hardened steel because of their hot hardness and good fracture toughness.

Experimental Study on the Cutting Temperature with Micro-Texturing Self-Lubricated Tools

2011 ◽  
Vol 291-294 ◽  
pp. 715-720
Author(s):  
Ze Wu ◽  
Jian Xin Deng ◽  
Yun Song Lian ◽  
Zhi Jun Wang ◽  
Jun Zhao
Keyword(s):  
Experimental Study ◽  
Cutting Tools ◽  
Cutting Temperature ◽  
Hardened Steel ◽  
Cemented Carbide ◽  
Dry Cutting ◽  
Cemented Carbide Tools

Micro-texturing self-lubricated cutting tools named MTR-1 and MTR-3 were designed and made based on micro-texturing lubricating idea and laser micro-texturing technology. Dry cutting tests on 45# hardened steel were carried out with these self-lubricated cutting tools and conventional cemented carbide tools named MT0. The cutting temperatures and the morphology of chips were measured. The results indicated that the cutting temperatures with the micro-texturing self-lubricated cutting tools were reduced compared with that of MT0 cemented carbide tools, and the chip coiling was improved.

CBN Tool Wear Modeling in Finish Hard Turning

Manufacturing ◽  
2003 ◽  
Author(s):  
Yong Huang ◽  
Steven Y. Liang
Keyword(s):  
Tool Wear ◽  
Hard Turning ◽  
Cutting Tools ◽  
Cutting Temperature ◽  
Cutting Parameters ◽  
Tool Geometry ◽  
Wear Volume ◽  
Wear Rates ◽  
Cbn Tool ◽  
Finish Hard Turning

The cubic boron nitride (CBN) cutting tools are commonly used for single point turning of hardened materials. The wear behavior and tool life of CBN cutters are important issues in order for hard turning to be a viable technology in view of the high cost of CBN cutting tools and the cost of down-time for tool change. The objective of this study is to develop a methodology to model the rate of CBN tool wear on both the flank and rake faces. The model can serve both as a basis to guide the design of CBN tool geometry and to optimize cutting parameters in finish hard turning. First, the kinematics, stress distribution, and temperature variation on the tool flank and rake faces are formulated. Subsequently, the wear volume loss is modeled as functions of cutting temperature, stress, and other process information based on the consideration of main wear mechanisms of abrasion, adhesion, and diffusion. Then, flank/crater wear rates are predicted in terms of tool/work material properties and cutting configuration. Finally, based on the calibrated wear coefficients in independent tests, the proposed models are experimentally validated in finish turning hardened 52100 bearing steel using a low CBN content insert. The model predictions agree with the measurements in terms of the behavior of stable growths of wear land and crater. The adhesion is found to be the dominating wear mechanism over the range of cutting parameters examined.

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