By statistical analysis, the relationship between the matrix hardness of the high pearlite-containing nodular iron and its nodularity and pearlite content was investigated.
通过统计分析，研究了高珠光体含量球铁的基体硬度与球化率和珠光体含量的关系。
By studying the application of sandwich-structured synthetic diamond core bits, following results are concluded: Matrix hardness can be HRC3-5 higher than that of similar ordinary ones;
通过对夹层结构金刚石钻头的应用研究发现，与同类普通金刚石钻头相比，该钻头的胎体配方硬度可以高HRC3~5；
It demonstrated that the experiment of hardness is likely to upset in the experiment of compression. Hardness tester indenter make matrix metal plastic deformation and viscous flow happen.
结果表明，硬度实验类似于压缩实验中的镦粗，硬度计压头可使金属基体发生塑性变形及粘性流动。
Vickers hardness test showed that the hardness of ferrite in healing area is higher than that in matrix, which may result from the strengthening of polyangular grains.
维氏硬度测试结果显示，出现在愈合区的铁素体组织维氏硬度高于基体区铁素体组织，可能原因是愈合区中出现的多边晶块结构所引发的强化。
Holding primary hardness, magnetism and plating properties of matrix, protection performance of steel was improved by combining the Zn - Fe alloy electroplating and phosphating technology.
为了保持基体金属硬度、磁性以及电镀层性能等均不变，将锌铁合金电镀工艺与磷化工艺进行了组合，以提高钢铁件的防护性能。
Results show that the ratio of hardness of matrix to that of interface transition zone decreases with the increase of cement replacement level by blast furnace slag;
试验结果显示：随矿渣取代水泥质量分数的增加，基体与界面过渡区之间压痕硬度的差异减少；
The results of experiments showed that the Nb can raise the depth of diffusion zone, hardness, wear resistance, strength and toughness of the nitriding layer of the matrix steel.
实验结果表明，铌能增加扩散层深度、硬度及耐磨性，提高渗层的强韧性。
It is found that adding vanadium can refine the high-chromium cast iron matrix, change the carbide morphology and distribution, improve the hardness and wear resistance of high chromium cast iron.
结果表明，钒的加入可显著细化高铬铸铁的基体组织，改变了碳化物的形态及分布，提高了高铬铸铁硬度及耐磨性能。
The hardness of the alloy and the electrical potential in matrix increase with the content of chromium.
研究结果表明：随着含铬量的增加，硬度提高，基体电极电位增加；
So the abrasion resistance of cylinder is a matrix, hard phase, honing, graphite, and the hardness result of multiple factors.
同时缸套耐磨性是基体组织、硬质相、珩磨、石墨、硬度多种因素综合作用的结果。
The experiment result shows that quenching by laser can increase the hardness of the matrix surface by 4-5HRC and extend the matrix life by over 20%.
试验结果表明，激光淬火可使凹模型腔表面硬度提高4～5HRC ，凹模寿命提高20 %以上。
The mixing proportion of WC and matrix metal, the grain size of WC, the composition and hardness of the matrix and other factors on wearability of the spray welding coating are discussed in the paper.
本文重点研究了碳化钨与粘结金属的配合比例、碳化物颗粒的粒度、粘结金属的组织成分及其硬度等因素对喷焊层耐磨性的影响，并初步得出某些因素对喷焊层耐磨性的影响规律。
Adopting four kinds of matrix composition and getting twelve samples, measuring its hardness and wear strength.
采用四种胎体配方得到12个试样，并对其进行了硬度，磨损检测。
The composition of the welded joint obtained by the two welding methods are all uniform, the hardness is higher than the matrix metal, the comprehensive property is good.
两种焊接方法所得焊接接头成分均匀，硬度值均超过母材，综合性能良好。
The composition of the welded joint obtained by the two welding methods are all uniform, the hardness is higher than the matrix metal, the comprehensive property is good.
两种焊接方法所得焊接接头成分均匀，硬度值均超过母材，综合性能良好。
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