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   磨削能 的翻译结果: 查询用时:0.714秒
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磨削能
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  grinding energy
     The morphology of surface/subsurface of nanostructured (n)WC/12Co and nAl_2O_3/13TiO_(2) coatings ground with different grinding parameters were investigated by using scanning electron microscope. The grinding force ratio and specific grinding energy were measured.
     用扫描电镜对纳米(以n表示)结构WC/12Co(nWC/12Co)和Al2O3/13TiO2(nAl2O3/13TiO2)涂层经立式精密平面磨削后的磨 削表面/亚表面的形貌进行观察,测量了nWC/12Co和nAl2O3/13TiO2涂层精密磨削的磨削力分力比、比磨削能
短句来源
     we tested the connection between the value of u(the specific grinding energy of PCD) and the parameters of grinding process,meanwhile,the experimental results show that: if u<25000J/mm~3,the grinding mechanism of PCD material is fatigue brittle removal;
     结果表明:比磨削能u值小即u<25000 J/mm3时,PCD材料磨削机理为疲劳脆性去除;
短句来源
     In this paper are shown the respective grinding results of Al_2O_3-Mo cermet with diamond wheel on a cylindrical electrolytic grinder in different grinding ways (dry, wet and electrolytic). Grinding forces and specific grinding energy are measured. Ground surface and chips are observed by SEM.
     本文介绍了在外圆电解磨床上使用金刚石砂轮对Al_2O_3-Mo金属陶瓷材料进行干磨、使用不同磨削液的湿磨及电解磨削试验结果,测试了不同条件下的磨削力及比磨削能,并对磨削表面及磨屑进行了电镜观察,在此基础上进行了金属陶瓷磨削机理的初步分析讨论。
短句来源
     EXPERIMENTAL STUDY ON THE SPECIFIC GRINDING ENERGY OF POLYCRYSTALLINE DIAMOND
     聚晶金刚石比磨削能的试验研究
短句来源
     Study on Specific Grinding Energy of Ultra High Speed Grinding
     超高速磨削的比磨削能研究
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  “磨削能”译为未确定词的双语例句
     if 25000 J/mm~3
     比磨削能u值较大即25000 J/mm3≤u<120000 J/mm3时,PCD材料磨削机理为随着比磨削能u值的增大,疲劳脆性去除的比例减少、机械热去除及热化学去除的比例增大;
短句来源
     when u>120000J/mm~3,the grinding mechanism is mechanical thermal removal and thermal chemical removal,and the fatigue brittle removal hardly takes place.
     比磨削能u值很大,即us≥120000 J/mm3时,PCD材料磨削机理为机械热去除及热化学去除、基本不发生疲劳脆性去除。
短句来源
     Also in the paper, the relationship of the PCD grinding mechanism with u is given.
     同时通过分析可知,PCD的磨削机理与比磨削能u存在一定的关系。
短句来源
     Investigation on the Characteristics and Formation Mechanisms of Grinding Force and Energy in High Efficiency Deep Grinding for Advanced Ceramics
     工程陶瓷高效深磨磨削力和磨削能的特征及形成机理研究
短句来源
     Studied the enhancement the grinding surface quality by high speed grind,after high speed rubs the speed change which truncates to rub truncates the experiment,confirmed the speed change rubs truncates the performance certain degree suppression high speed to rub truncates flutters.
     系统研究高速磨削下的变速磨削试验,阐述提高高速磨削表面质量的方法,证实变速磨削能在一定程度上抑制高速磨削颤振。
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  相似匹配句对
     Study about specific grinding energy of ultra high speed grinding
     超高速磨削的比磨削研究
     Study on Specific Grinding Energy of Ultra High Speed Grinding
     超高速磨削的比磨削研究
短句来源
     Biological Mass-energy
     生物质
短句来源
     Grinding Ceramics
     陶瓷的磨削
短句来源
     The interpretations of the Chinese character"néng 能
     释“
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  grinding energy
The milling behaviour of these wheat lines was evaluated on an instrumented micromill which also measures the grinding energy and flour particle size distribution was investigated by laser diffraction.
      
The experimental investigation has shown that a major advantage of CBN grinding is that a substantially lower proportion of the total grinding energy enters the workpiece compared to grinding with alumina wheels.
      
The results show that the grinding energy can be accurately predicted by the application of the grinding force model.
      
Due to the previous paper, the workpiece burning occurs as the grinding energy is greater than the critical grinding.
      
Part(II): workpiece temperature and critical grinding energy for burni
      
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  grinding power
The model was used to predict the total tangential and normal forces in surface grinding and the total grinding power in cylindrical grinding.
      
On the basis of a heat-transfer analysis, it is shown that some types of thermal damage can be predicted and controlled by inprocess monitoring of the grinding power.
      
It is generally necessary to reduce the grinding power in order to attenuate the restriction of thermal damages.
      
Since required grinding power increases exponentially as target size reduces, it is important to limit the tonnage sent to finer grinding stages.
      
To our surprise, even though we introduced 6MW of extra grinding power, operating cost per tonne of feed did not increase.
      


Based on a geometrical analysis in combination with experimental verifications,this paper deals with the mechanism of steel conditioning and the effects of grinding wheel speed vupon such factors as——the metal removal rate Zw;——the grinding wheel wear rate Zs;——the grinding ratio G and——the grinding power Pm and specific grinding energy u.An inference has been drawn from the investigation that a spheroidal surface must be formed on the grinding wheel around its axis while the wheel comes into a steady state...

Based on a geometrical analysis in combination with experimental verifications,this paper deals with the mechanism of steel conditioning and the effects of grinding wheel speed vupon such factors as——the metal removal rate Zw;——the grinding wheel wear rate Zs;——the grinding ratio G and——the grinding power Pm and specific grinding energy u.An inference has been drawn from the investigation that a spheroidal surface must be formed on the grinding wheel around its axis while the wheel comes into a steady state soon after it contacts with the ground billet. The mean undeformed chipping thickness of a single grain is expressed as followswhere Vw——billet moving speed;d——cutting depth by grinding wheel.Cg——mean number of grain's cutting edges per mm2 on the surface of grinding wheel)θ——half vertex angle of grain;J——ratio D/D', D the diameter of grinding wheel and D' the diameter of spheroidal surface formed on grinding wheel.Over 170 full-scale tests show that the change of grinding wheel speed is of great importance to steel conditioning. Increase in grinding wheel speed has the advantages of raising the productivity and grinding ratio and reducing the specific grinding energy, so that the steel conditioning cost is reduced and some technical parameters are improved. By regression analysis, test results are shown as coefficicients and exponents which are listed in tables 2,3 and 4 , and the relevant semiemperical relationships of Zw, Zs and u in certain conditions are given in formulae (13) , (14) and(16) respectively. They are probably valuable for revealing further the mechanism of steel conditioning and designing new types of conditioning machines.

本文首先从钢坯修磨图形分析入手,讨论了钢坯修磨机理的有关问题。试验结果证明:砂轮速度的变化对钢坯修磨过程具有极为重要的影响,提高砂轮速度可大大提高修磨效率、提高磨削比、降低比磨削能、有利于降低钢坯修磨成本,是改善修磨工艺参数的最重要途径之一。 通过对试验结果的回归处理,建立了在一定条件的有关钢坯修磨的半径验公式,有助于改进钢坯修磨工艺参数并为设计新型修磨机提供依据。

In this paper,the effects of head force Fn on such conditioning parameters as metal removal rate Zw,wheel wear rate Ws, grinding power Pm and specific grinding energy u and the estimated cost C for 90° steel conditioning have been experimentally investigated. Thus, some semiempirical relationships are determined. More than 170 tests were taken and test conditions are shown in Table 2. On the basis of a geometrical grinding model of 90° conditioning established(cf. Fig. 11), the mean thickness of undeformed chips...

In this paper,the effects of head force Fn on such conditioning parameters as metal removal rate Zw,wheel wear rate Ws, grinding power Pm and specific grinding energy u and the estimated cost C for 90° steel conditioning have been experimentally investigated. Thus, some semiempirical relationships are determined. More than 170 tests were taken and test conditions are shown in Table 2. On the basis of a geometrical grinding model of 90° conditioning established(cf. Fig. 11), the mean thickness of undeformed chips ag,the maximum grinding depth d,the normal force exerting on a grain F'n, the mean length of undeformed chips l and the number of actual grinding grains in unit time No are expressed as formulas (20), (16), (17), (18) and (19) respectively.With equations as above,therefore,the steel conditioning mechanism and almost all the factors which affect the grinding process are analyzed quantitatively.It is proved theoretically that the head force Fn is quite an important parameter to steel con -ditioning.With the increase in head force Fn,the metal removal rate Zw greatly raises and, on the contrary, the specific grinding energy u greatly decreases.By means of regressive analysis to test results,as shown in Table 3 , 4 and 5 ,the conclusion may be drawn without doubt that increasing the head force Fn is an important way to effectively raise the productivity and to reduce the steel conditioning cost.

本文通过试验得出了90°修磨中修磨压力对金属切除率、砂轮磨损率、磨削功率、比磨削能及修磨成本等的影响关系和若干经验公式,并在建立修磨磨削图形、单磨粒受力、平均切屑长度等与工艺参数的关系式基础上,分析讨论了修磨过程中诸工艺参数的作用及某些现象和机理。

Objective.Having many influencing factors on grinding process,investigation in grinding is more complicate than that in common cutting.Quite a good deal of individual tests should be respectively performed to find out the relation between the grinding power p' and other factors in creep feed grinding and thereafter an all-sided p' analysis is made possibly.This paper suggests a new method which combines dimensional analysis with orthogonally designed test and regression analysis to study p' such that the number...

Objective.Having many influencing factors on grinding process,investigation in grinding is more complicate than that in common cutting.Quite a good deal of individual tests should be respectively performed to find out the relation between the grinding power p' and other factors in creep feed grinding and thereafter an all-sided p' analysis is made possibly.This paper suggests a new method which combines dimensional analysis with orthogonally designed test and regression analysis to study p' such that the number of tests is reduced and data processing simplified with reliability.It is favourable to more directly reveal the physical characteristics of creep feed grinding process.Through the exponential matrix analysis of variable's dimensions,a methematical model of grinding power p' along unit ground width has been derived aswhere D is the diameter of wheel,d the cutting depth by wheel,σw the binding of wheel and σb the tensile strengths of workpiece;v,vw and vd the linear velocities of wheel,of feeding workpiece and dresser respectively,n the exponents and c the constant.Experiments were designed orthogonalizably and the analyses of range and variance for experimental results are made.The analyses show that factors σw/β,vd/v and d/D have significant influences on p',while factor vw/v is of small influence on p' but great on specific grinding energy u.Applying regression analysis to experimental results,constant c and exponents n in the above formula are given asc=3.78×10-5 n1=3.38,n2=0.022,n3=0.2 and n4=0.67.Thus,by the regression equation which includes a group of dimensionless numbers n as variables,p' can be determined.As seen,the strength ratio σw/σb is of importance,of which the optimum value is to be 5 approximately.Parameters vw/v and d/D characterize the size effects and vm/v≈3.76 is better.Parameter vd/v shows the influence of dresser feeding on p'.Tab.1 Level of different factorsTab.2 L9(43) orthogonal experiment designTab.3 Calculation for L9(43) variance analysisTab.4 Variance analysisTub.5 Level codeTab.6 Regression analysisFig.1 Representation of range analysis

本文应用量纲分析与回归正交的综合方法研究缓进给强力磨削功率、比磨削能等问题。从无量纲特性数的角度揭示了磨削过程中诸磨削参数与功率,比磨削能之间的关系。对于怎样合理选择缓进给强力磨削工艺参数的问题作了一些探索。最后,对试验数据进行了回归处理,得到了表现为无量纲特性数的函数关系的磨削功率计算公式。

 
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