metal hardness

Application of uncertainty in test , by metal hardness measuring .

通过在金属硬度检测中，对不确定度的分析与计算，介绍不确定度在测试分析中的运用。

Metal hardness test-classifying system is established first in China .

国内首次研制成功金属硬度自动测试分选系统。

Quantitive Nondestructive Testing of the Metal Hardness Using Wavelet Networks

基于小波网络的LY12铝合金硬度定量无损检测的研究

Research on metal hardness automatic test-classifying and realization

金属硬度自动检测分选的研究与实现

Metal hardness and wear-resistance were increased with the increase of B4C , Fe and graphite .

随着碳化硼、铁粉、石墨增加硬度与耐磨性提高。

Especially the unlinear relation between the degree of hardness of aluminium and initial magnetic permeability , these all affected the testing of the metal hardness seriously .

特别是金属硬度与初始磁导率的非线性问题，这些均严重影响了硬度的检测。

Micro hardness results show that the alloy elements infiltrated into the region is abundant , and the response generated by the combination of hardness on the high carbon region , the closer the lower base metal hardness .

显微硬度的结果表明，在合金元素渗入较为丰富的区域，以及反应结合所生成的碳化物区域硬度就较高，越接近母材硬度就越低。文章还对合金层形成机理进行了分析。

Comparison and Analysis of Evaluating Methods of Uncertainty in Measuring Metal Rockwell Hardness in Foreign Standard

国外标准中洛氏硬度值测量不确定度的评定方法对比与分析

The appreciation on the uncertainty on measuring metal Rockwell hardness

金属洛氏硬度试验测量不确定度评定

The experiment shows that it can improve metal surface hardness and prolong service life of parts and increase the stress .

经试验证明可以大大提高金属表面的硬度、零件的使用寿命及其受力情况。

The basic principles and practical applications of measurement uncertainty are introduced by evaluating and analyzing measurement of metal Rockwell hardness C.

通过对金属洛式硬度C标尺的不确定度评定与分析，介绍了不确定度的基本原理及其在硬度实验中的实践应用。

The Rockwell Apparatus is widely used for the detection of metal material hardness . The test force of hardness meter has obvious influence to the accuracy of indication .

洛氏硬度计是金属材料硬度检测中普遍使用的测量设备，其试验力F对硬度计示值精确性有较大的影响。

Analysis about the Uncertainty in the Result of Metal Component Rockwell Hardness Measurement

金属零件洛氏硬度值测量结果不确定度分析

Uncertainty evaluation of metal material Vickers hardness measurement

金属材料维氏硬度测量不确定度的评定

We studied the metal tissue , hardness , resistance of Co-Cr alloy after casting .

本文对钴铬合金铸后在金相组织、硬度、抗腐蚀性能等方面进行研究。

Dissolve deposited metal has low hardness and high toughness , heat corrosion resistance to impact abrasion .

溶敷金属具有低硬度高韧性，可耐热耐腐蚀耐冲击磨耗。

The advantage is that electrical discharge machining processes with good surface roughness and machines metal of any hardness .

电火花加工的主要优点是可获得较低的表面粗糙度，并且可以加工任何硬度的金属。

The effect of uncertainty evaluation in Rockwell hardness test is described by analyzing and calculating the uncertainty of metal in Rockwell hardness test .

通过对金属在洛氏硬度实验检测中的不确定度的分析与计算，介绍不确定度的评定在洛氏硬度实验检测中的作用。

By proper heat treatment , it is possible to obtain certain chracteristics in metal such as hardness , tensile strength ( ability to resist stretching ), and ductility .

通过适当热处理，使金属得到某种特性，如硬度、抗拉强度（抗拉伸能力）和延性。

The cylinders are made of super-hard metal ( plunger hardness above HRC55 ), and sealed with low-resistance stepped gaskets , giving no oil-leakage , long service life and low maintenance cost .

液压缸采用特殊超硬材料，柱塞硬度达HRC55以上，密封采用低阴力阶梯圈，无漏油，使用寿命长，保养成本低；

The Micro-control System Devise of Metal Materials ' Ball Hardness

金属材料布氏硬度检测微控系统的设计

At the same time , we studied on adding tin in metal to improve the hardness of casting , and using normalizing process to save the under standard hardness casting .

同时，对蠕墨铸铁原铁水中加入锡解决铸件硬度不合格的缺陷，以及采用正火工艺挽救硬度不合格铸件等，也进行了研究。

Results indicate that toughness of the simulated HAZ is superior over the base metal and the maximum hardness of the simulated HAZ is depressed by laser tempering and the preheat treatment .

研究结果表明，模拟热影响区在上述三种状态下的冲击韧性值均远高于基材，且经焊前预热或激光回炎后激光焊热影响区最高硬度值下降。

The test results have showed that these balls are suitable to grind various metal ores with high hardness under compact and corrosion conditions and demonstrated their advantages of good performances , high wear resistance and low breakage .

试验结果表明，这种磨球适合在冲蚀条件下研磨高硬度的各种金属矿石物料，显示了性能优良、耐磨、破碎率低等优点。

The results show that the wear resistance of the materials was markedly influenced by the content of TiC cemented carbide granule in the materials as well as the composition , microstructure and hardness of the metal matrices and the hardness of the abrasives .

结果表明，材料的耐磨性明显地受到其中TiC硬质合金颗粒的含量、金属基体的成分组织和硬度以及磨料的硬度的影响。

Because of the influence of dilution of base metal and carbide precipitation of deposited metal , the hardness of deposited metal decreases with the increase of the tempering temperature .

由于母材稀释的影响和熔敷金属组织中的合金碳化物析出，熔敷金属的硬度随回火温度的升高而降低。

The sealing surface of the upper & lower valves of the coal lock hopper , required to deposit horniness alloy metal , the depositing area larger , the depositing metal high hardness , and the most strict requirements in quality .

气化炉的煤锁上、下阀门密封面要求堆焊硬质合金，堆焊面积大，硬度高，质量要求极其严格。

The effects of alloy element C , Nb , Ti and V on the hardness and distribution of carbides in surfacing weld metal were investigated , and a kind of weld metal with high hardness was achieved .

研究了堆焊焊缝的硬度及碳化物分布，分析了C、Nb、Ti、V对硬度的影响，优选了一种硬度高、碳化物分布均匀的堆焊焊缝。

There was no crack in the deposited metal on the reproducing cutter 's cutting edge . The deposited metal 's hardness was 50 ~ 55 HRC and became 55 ~ 60 HRC after impact .

再制造刀具的刃口堆焊层无裂纹，硬度为50～55HRC，冲击后硬度为55～60HRC。

The results show that there are no obvious boundary between weld metal and base metal , the weld composition is uniform and is the same as that of base metal , hardness distribution of joint is steady .

结果表明：惯性摩擦焊焊缝与母材无明显界线，结合良好，焊缝成份均匀与母材基本相同，接头硬度分布均匀。