Aimed to realize the problem of quenched rail qualification forcast through quantitative analysis of quenched rail surface hardness by eddy current , and combined the eddy current theory with the computer image processing and signal analysis , the hardness testing model is established in this paper 针对涡流无损检测淬火钢轨踏面硬度的定量分析来实现淬火钢轨质量保证预报问题，将电涡流理论与现代计算机图象处理和信号分析相结合，完成硬度测试模型建立。
The additive function and affection was studied on to mullite / zirconia / alumina composite ceramics in the paper . v2o5 and alf3 were confirmed to accelerate the forming of mullite whisker , ensure to enhance the toughness of samples , better heat thermal - shock resistance . the strength , micro - hardness , thermal expansion coefficient and thermal - shock resistancehave been tested 对外加不同添加剂系列样品，进行强度测试、显微硬度测试、热膨胀系数测定及抗热震性测试，从中找出了综合性能较好的样品配方，其抗折强度高达172 . 80mpa 、显微硬度601 . 5 、热膨胀系数为6 . 56 10 ~ ( - 6 ) ~ ( - 1 ) 、抗热震性好。
With the hardness tests , it is indicated the hardness of the nano alumina or nano silicon carbide coating is improved to 1 . 6 - 2 . 5 times as that of the plasma spraying coating . with the wearing tests , it is indicated that low laser power employed , the wearing performance of the coating without nano material increase to 1 . 3 times as that of the plasma coating , at the same time , the wearing performance of the coating with nano material increase 2 . 3 - 6 times as that of the plasma spraying coating , the wearing mechanism is further analyzed . with the erosion tests , it is indicated that the erosion performance of the coating with nano material increase five times as that of the plasma spra 与相应等离子喷涂层相比，硬度测试表明，含纳米al _ 2o _ 3或sic的各种复合涂层硬度提高了0 . 6 - 1 . 5倍左右；耐磨性测试表明，小功率下单纯的激光重熔耐磨性提高了30 ，而纳米渗入后涂层的耐磨性提高了1 . 3 - 5倍左右，对耐磨性提高的机理作了进一步的探索和分析研究；耐蚀性测试表明，经激光熔覆纳米渗入后的各种涂层耐蚀性能提高了4倍以上，同时涂层厚度、表面质量对腐蚀性能有影响。
The hardness tester is applicable to measure micro hardness of micro & thin specimen , etc . , and determine micro hardness of fraglie materials , such as glass , ceramic , agate , etc . , being the ideal hardness testing instrument for scientific research institution , enterprise and quality inspection department to perform research and detection 硬度计适用于测量微小、薄形试件、表面渗镀层等试件的显微硬度和测定玻璃、陶瓷、玛瑙、宝石等脆性材料的显微硬度，是科研机构、企业及质检部门进行研究和检测的理想硬度测试仪器。
With the wearing tests , it is indicated that low laser power employed , the wearing performance of the coating without nano material increase to 1 . 3 times as that of the plasma coating , at the same time , the wearing performance of the coating with nano material increase 2 . 3 - 6 times as that of the plasma spraying coating , the wearing mechanism is further analyzed . with the erosion tests , it is indicated that the erosion performance of the coating with nano material increase five times as that of the plasma spraying coating . at the same time , the erosion performance is affected by ceramic coating thickness and surface quality 与相应等离子喷涂层相比，硬度测试表明，含纳米al _ 2o _ 3或sic的各种复合涂层硬度提高了0 . 6 - 1 . 5倍左右；耐磨性测试表明，小功率下单纯的激光重熔耐磨性提高了30 ，而纳米渗入后涂层的耐磨性提高了1 . 3 - 5倍左右；耐蚀性测试表明，经激光熔覆纳米渗入后的各种涂层耐蚀性能提高了4倍以上，同时涂层厚度、表面质量对腐蚀性能有影响。
Advanced digital hardometers ( testing the hardness and safe load of bolts ) etc . testing equipments . advanced digital hardometers testing the hardness and safe load of bolts ) etc . testing equipments , the 1 , 500 sq . m . vertical goods shelves can hold more than 5 , 000 tons goods loading , each bin has fixed codes , and has perfect enterprise digital informationization management system and the support of software , which greatly improves the rationality and simplicity of goods loading and enhances the accuracy of goods and quick delivery and is one - up on others 先进的数字化硬度测试仪（检测螺栓的硬度及保证载荷）等检验设备，以及1500平方米的立体货架可容纳5000多吨货物的存放，每个仓位都固定编码，并有完善的企业数字信息化管理体系及软件的支持，大大提高了货物堆放的合理性和简洁性，大大提高了货物的准确性和发货的快速性，使得更胜人一筹！
Cu - zn - cr - zr conducting bar alloy and cu - cr - zr end ring alloys used for superpower asynchronous traction motor rotor were prepared by ingot metallurgy . using hardness measurement , tensile test at room and higher temperature , electrical resistance test at room and higher temperature , optical microscopy , xrd , sem , and tem , the mechanical and electric properties and the microstructure of above alloys at different treatment were studied . them were also analysed and explained in theory 采用铸锭冶金法制备了大功率异步牵引电动机转子用导条合金和端环合金，通过硬度测试、室温拉伸、高温拉伸、电导率测定、金相分析、 xrd 、 sem 、 tem等方法研究了不同加工工艺和热处理工艺对上述合金力学性能、导电性能及其组织结构的影响和变化规律，并从理论上进行了分析和解释。
The experiment is about researching the permeated aluminum technology process of pure copper , the characteristic of permeating cover and the thoery of forming permeating cover ， to measure the hardness of the permeated pure copper and make an observation on microcosmic organization , compare the permeating cover under different thrust pressure 本实验对纯铜的渗铝工艺过程、渗层的组织特征以及渗层的形成机理进行了研究；对纯铜渗后试样进行了硬度测试和微观组织的观察，并对不同压制压力下得到的渗层进行了比较
Abstract : aimed to realize the problem of quenched rail qualification forcast through quantitative analysis of quenched rail surface hardness by eddy current , and combined the eddy current theory with the computer image processing and signal analysis , the hardness testing model is established in this paper 文摘:针对涡流无损检测淬火钢轨踏面硬度的定量分析来实现淬火钢轨质量保证预报问题，将电涡流理论与现代计算机图象处理和信号分析相结合，完成硬度测试模型建立。
