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放电加工

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At present, NAGAWA has obtained the attorneyship of Japan Star Micronics CNC automatic lathes, The company deals in other products too, including: Japan Mitsubishi electrical discharge equipments, Japan Chukyo Kasei aerosol products (mould release agent、cleaner、antirust, etc. mould shaping and electron aerosols), Japan Daido Steel, Britain Jaeger chemical products, Austria Isovolta electrical insulation materials, mould developing and manufacturing, plastic injection molding parts processing and purification engineering—ground coating of workshop.

目前,永和工贸有限公司也取得日本斯大精密CNC自动车床代理权,同时还经营其他产品,包括:日本三菱放电加工设备、日本中京化成喷剂制品(离型剂、洗净剂、防锈剂等模具成型及电子类喷剂)、日本大同特殊钢、英国積架化工产品、奥地利伊索沃而塔电气绝缘材料产品、模具开发与制做、塑料成型部品的加工以及工场厂房的地面涂装净化工程。

In this paper, an object of study in EDN, the square barrier model is set up, the mechanism of electron tunnel effect is discussed in EDN, and the explanation of Bohr quantum theory is given on the spark phenomenon in EDN.

以电火花线切割加工为研究对象,通过建立方势垒模型,阐述了电火花加工中的电子隧道效应机理,并对放电加工中出现的火花现象给出了Bohr的量子论解释。

Be able to deal with variety problem that happened in the EDM work.

能及时处理放电加工工作中发生的各种问题。

The company is engaged in product development, production, sales and service professionals as one of the EDM maker, is also Singapore's only professional discharge machine manufacturers......

公司主要是从事产品研发,生产,销售及服务为一体的专业放电加工制造商,同时也是新加坡唯一专业放电加工机制造商。。。。。。

Combining the experimental results and theoretical analysis, the following work has been accomplished.(1) Reasons of the decrease of interelectrode capacitance and the increase of discharge gap caused by the powder suspended in dielectric fluid are explained. And the mechanism that surface quality of workpiece improved by powder-mixed EDM is analyzed from this viewpoint.(2) The variation regularity of the percentage of silicon on the machined surface of workpiece has been summarized according to the experiment results when silicon powder was added into the working fluid. The entropy is introduced to explain the reasons for this variation regularity by thermodynamics.(3) The dimensional accuracy is greatly influenced by the overcut resulting from discharge gap and electrode wear in practice application. Empirical formulas for the overcut in EDM and powder-mixed EDM are established based on the experimental results using the ternary linear regressive method in this paper.(4) The influence of main factors on the machined surface characteristics has been evaluated based on the orthogonal experimental design method.

通过一系列普通电火花加工与混粉电火花加工的对比实验,运用工艺实验和理论分析相结合的方法,重点做了以下工作:(1)探讨了粉末颗粒导致极间电容减小、放电间隙增大的原因,并从这个角度解释了混粉电火花加工可以改善工件表面质量的机理;(2)以混合硅粉的电火花加工为例,实验得出峰值电流和脉冲宽度对加工表面层成分中硅元素含量的影响规律,并引入熵的概念从热力学的角度对硅元素含量变化的原因寻找了理论依据;(3)在实际加工中,由于粉末的加入使放电间隙变大,这使得混粉电火花加工的尺寸精度难以控制,本文利用三元线性回归的方法,在实验数据的基础上,建立了两种电火花加工过切量的计算公式;(4)将正交试验法应用于混粉电火花加工实验研究,并通过对实验指标极差的直观分析,得出各电参数对加工指标影响的敏感程度。

Must be able to safely use Sadic EDM to machine parts, can program and operate CNC machine.

能够正确并安全的使用Sadic EDM进行放电加工,能够编程及操作CNC机床。

An analysis on the mechanism of ceramic grinding with diamond wheel and Electro discharge-machining has been car ried out.

对陶瓷材料的金刚石砂轮磨削加工和放电加工机理进行了研究,并提出了机械磨—放电复合加工技术。

We also have the most advanced system of the Swiss screw machine (9-axis) and the metal wire discharge processing capacity.

我们还具有最先进的瑞士制螺钉机(9 轴)和金属线放电加工能力。

Voltage between tool and workpiece is an important parameter in the on line monitoring of wire electrical discharge machining process.

电火花线切割加工时工具和工件之间的放电电压是对放电加工过程进行实时检测的重要参数。

However, because of the natural characteristics of the micro and small hole EDM, such as weak discharge energy, high pulse power supply frequency, unstable spark discharge states and small discharge gap, etc., there are still some key technical difficulties in its machining process need to be solved: the difficulties in real-time discharge states detection, in accurate control of machining process, in prediction of discharge states, in improvement of machining system precision and in on-line preparation of micro electrode, etc.

但是由于微细及小孔电火花加工自身具有的放电能量极微、脉冲电源频率高、难以获得稳定的火花放电状态以及放电间隙极小等固有特性,决定了其加工过程仍然存在放电状态实时检测方法单一、加工过程难于准确控制、放电状态难于预测、加工系统精度提高困难和微小电极在线制备困难等关键性技术难点,亟待突破和解决。

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采用不同浓度K2CrO4(0,0.4,0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗,测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础,研究二值图像的形态分析算法,探讨最小结构元素的两种基本形态:膨胀和腐蚀;分析了数学形态学复杂算法的基本原理,把数学形态学的部分并行处理理念引入到家实际应用中。

Have a good policy environment, real estate, secondary and tertiary markets can develop more rapidly and improved.

有一个良好的政策环境,房地产,二级和三级市场的发展更加迅速改善。