This paper supports two methods of making ceramic tools. The paper tightly packed, and the logic is strong. Although the paper have strong academic level, it is easy to get the main idea. I learned that how to express the complex in simple words especially the writing of abstract and conclusion through reading the paper. The paper is very long but its structure is clear from introduction to conclusion and every title can express the mail idea of the paragraph. The normal people could get the structure of this paper, know well the subject researched and grasp the conclusion of this paper by way of look through the title in several minutes. The above is all the things I should learn for the future,
The outline of this paper:
1、 Abstract: The paper compares the performance of a mixed oxide ceramic tool in dry and air-cooled turning of grey cast iron. It turns out that air-cooled turning of grey cast iron with mixed oxide ceramic tools offers a promising environment-friendly option.
2、 Introduction: This paper compares the performance of dry and air-cooled turning of a grey cast iron with mixed oxide ceramic tool. The surface roughness of the machined surface, tool wear, cutting forces and vibrations are the parameters, which have been studied. Considering that the data is noisy and it is not possible to have a large number of training and testing data, a novel procedure is employed for the training of the network. The air-cooled turning provided satisfactory performance in that range.
3、Experimental procedure: A series of experiment on turning were conducted in HMT make NH_26 lathe. The cutting forces were measured using a piexoelectric type 4-component dynamometer, which was fitted on the tool holder. The cutting tool used for the experiment was mixed triangular ceramic insert designated.
4、Full factorial experimental study of the cutting performance: A number of experiments were conducted in the desired range of process parameters, viz. cutting speed (v), feed (f) and depth of cut (d).It was decided to carry out 2-level full factorial design.The major advantage of air-cooled turning seems to be reduction of tool wear at high speed.It is seen that with air-cooling the growth of wear land is minimized. Other advantage is the lowering of cutting and feed forces. Against these advantages, there is very slight reduction in surface roughness in air-cooled cutting. Thus, air-cooled turning using ceramic offers attractive alternative to dry turning.
5、 Neural network modeling of tool life and surface roughness in dry and air-cooled turning: Two important performance parameters in turning process are tool life and surface roughness of the machined surface. Tool life estimation involves a number of tests to be carried out at various cutting conditions till the failure of the cutting tool.Neural network modeling has become a popular method for modeling of tool life and surface roughness in machining. The most popular network is multi-layer perceptron(MLP) neural network trainable by the so-called back propagation algorithm.
6、. Effect of air-cooling at higher cutting speeds: At the beginning of the present study, a series of experiments were carried out on dry turning of cast iron by ceramic tool in the cutting speed range 480–600 m/min.it is seen that high-speed turning of grey cast iron with mixed alumina ceramic provides a lowtool life. This observation is in line with the observations of Ghani et al. for high-speed turning of nodular cast iron by mixed alumina ceramic. However, air-cooled turning provides an enhanced tool life and may be adopted by industries for high-speed machining by ceramic tools.
7、 Conclusions:The performance of the dry and air-cooled turning of grey cast iron with a mixed oxide ceramic cutting tool was studied.This study also brought out some interesting and useful observations for future researches in this area.The main focus of the present work was to explore the possibility of improving the cutting performance of mixed oxide ceramic in turning of grey cast iron by means of air-cooling. The results are encouraging. The future work will concentrate in optimizing the process parameters of air-cooled turning process.
生词：
Parameter 参数
Contour 轮廓，周线
Ceramic 陶瓷
Rhomboid 长斜方形
Vibration 振动
Nodular 小结的
Oxide 氧化物
Polycrystalline 多晶的
Nitride 氮化物
Emulsion 乳剂
Rupture 裂开
Allergy 敏感症
Lubrication 润滑油
Spindle 锭子
Lathe 车床
Piezoelectric 压电的
Flank 侧面的
Velocity 速度
Hydraulic 水压的
Carbon 碳
Silicon 硅
Manganese 锰
Sulfur 硫磺
Phosphorus 磷
Photomicrograph 显微照片
Notch 槽口，凹口
Linear 线形的
Interpolation 插补
Three-dimensional 三维的
Perturbation 动摇
Grey cast iron 灰铸铁
Alumina-based 铝基
Dispersion ceramic 弥散陶瓷
短语：
in the order of 以···顺序
is generally used for 通常被用作···
Compared to 与···比较
in order to 为了···
at competitive price 以具有竞争力的价格
as well as 同样，也
carry out 执行
on the performance of 以···性能
at slower speeds 以较低的速度
In general 通常
call for 要求
such as 例如
In view of 以···观点
according to 根据···
it is not possible to 不可能做···
the range of cutting speed 切削速度范围之内
a series of 一系列
in the speed range of 在速度范围内
Corresponding to 与···一致
文章特点：
1、实验过程的描述都是用过去时，因为这个实验是已经发生过的。文章在描述一般事实时，用的是现在时。
2、文章引用文献都是在右上角标注，并且按照顺序依次列出。参考文献都是按照标准格式引用。
3、文章几乎没用第一、二人称，并且被动语态较多，句子较长。
4、文章整体结构清晰，完全按照典型的论文格式写作：引出、实验、比较、分析、结论。
