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摘要本项目采用新型材料高氮钢，通过研究高氮钢滚刀的耐磨性和耐腐蚀性，并结合高氮钢的机械性能研发高性能的新型滚刀。
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本项目以新型高氮钢、40CrNiMoa(现掘进机刀盘上的材料)、为研究对象，研究了新型高氮钢在常温下的机械性能,同时还重点研究了这两种材料的磨损性能和腐蚀性能。通过实验得知，在一般的磨损条件下，这两种材料的耐磨性相似，而随着载荷的增加，高氮钢的耐磨性会逐渐体现出来，载荷越大，高氮钢的耐磨性越优于40CrNiMoa。并且高氮钢的耐腐蚀性非常强，无论在强酸还是弱酸条件下的耐腐蚀性都要好于40CrNiMoa。综合以上，和40CrNiMoa相比，高氮钢的耐磨性和耐腐蚀性非常的优秀，将其用在盾构机刀盘上有着巨大的可能性且有很多发展空间。27159
关键词 盾构机 高氮钢 滚刀 耐磨性
毕业论文设计说明书外文摘要
Title Design And Fabrication Of High Nitrogen Steel Cutter
Abstract
This project uses the high nitrogen steel material, through the research of high nitrogen steel cutter wear and corrosion resistance,combined with mechanical properties of high nitrogen steel to study for high performance.
The project uses new high nitrogen steel and 40CrNiMo (now tunneler disk of material), as the object of study and researches mechanical properties of new high nitrogen steels at room temperature . The focus is on the two materials corrosion and abrasion performance. Through the experiment that, under the general wear condition, the wear resistance of the two materials were similar, and with the increase of load, the advantage of nitrogen steel’s wear resistance will gradually be reflected.While greater load , the wear resistance of high nitrogen steel would be better than 40CrNiMo. And high nitrogen steel corrosion resistance is very strong, no matter in acid or weak acid condition .The corrosion resistance of high nitrogen steel is better than 40CrNiMo. All of above,compared with 40CrNiMoa, high nitrogen steels have a excellent wear and corrosion resistance, so shield machine cutter disc has a great potential and has a lot of advantages in their use.
keywords shield machine high nitrogen steel cutter wear resistance
目 次
第一章 引言 1
1.1 高氮钢的背景1
1.1.1 高氮钢的历史 2
1.1.2 高氮钢的制备方法 2
1.1.2.1 固体含氮合金添加法2
1.1.2.2 氮气加压熔炼法2
1.1.2.3 粉末冶金法（PM法） 2
1.1.3 高氮钢的应用与发展 3
1.2 氮在钢中的存在形式和作用3
1.2.1 氮的存在形式及作用 3
1.2.2 氮对钢的机械性能的影响 3
1.2.3 氮对钢的腐蚀性能的影响 4
1.3 摩擦和磨损的基本理论4
1.3.1 摩擦 4
1.3.2 磨损及磨损的分类 4
1.3.3 磨损量的测试与评价 5
1.4 盾构机及盾构机刀盘 5
1.5 本课题的选材及研究内容、目的 6
第二章 实验材料和实验过程 8
2.1 实验材料及设备8
2.2 实验方案9