Since that's all, I'll code the code word again. First, the so-called 60Si2Mn is basically impossible to maintain good toughness at the hardness of 59-6 1HRC according to the current level, so it is meaningless to blindly drill into the dead end, and the efforts to improve toughness at high hardness are minimal. It is better to engage in nano-materials or composite materials with this luxury, and it is possible to find a way to maintain high toughness under high hardness from this aspect; Secondly, the so-called high hardness isothermal quenching of HRC59-6 1 exists in the current university textbooks, which is not high-tech or isothermal quenching in the traditional sense. The result of quenching is that quenched martensite or quenched martensite still accounts for an absolute proportion, and other contents such as lower bainite are relatively small. It is basically impossible to obtain this hardness by using this material to obtain the lower bainite structure, that is, by adopting various means such as fine grain strengthening. Papers, with all due respect, are much more empty, and there are not many engineering papers with practical guiding significance; Third, I have work experience and don't need your approval. First of all, I love this technology. Secondly, what I need is the ability to solve practical problems, which is the essence of engineering practice. Third, it is the knowledge of practical application of theory. Otherwise, why should all countries in the world establish the title of academician of the Academy of Engineering? Fourthly, spectrometer has been widely used in the production of factories. Even the top spectrometer is only 700,000 to 800,000. Is this rare? I don't want to show off how much equipment I have used here, but it's really not a good thing for you to go so extreme. An undergraduate has only graduated for two years, and there are many places and equipment to learn that have not been touched. To tell the truth, I have also read some textbooks for graduate students. Fourthly, I think graduate students should at least not get into trouble. I have always advocated rational discussion and a hundred schools of thought contend. The so-called scholars despise each other, which is the dross of China traditional culture, but the most basic thing should be possessed. What graduate students are best at is collecting and sorting out information, and the school has unique conditions. Why do you want to do some basic problems? Of course, you can call me vulgar. I can say without scruple that even if you are a graduate student, others.