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金属材料的高温持久强度数据是设计计算高温零部件强度的重要依据之一,目前使用的持久强度试验方法既费时,又费料。通常为了测定某材料在某一温度下的持久强度数据,往往取一组试样(一般不少于10根),在不同应力下,分别进行数十小时至数万小时的试验,这种方法大大地影响了新钢种的投产;因此能研制出一种简便的试验方法来估算金属材料的持久强度具有一定的实用意义。国内外对采用高温持久硬度测定持久强度值均有专题介绍. 通过不同炉号的三个钢种,在若干试验温度下所获得的相应的高温硬度和持久强度数据。使用数理统计方法探求它们之间的关系,并以此关系直接用硬度值就可十分迅速。简便地估算出所求持久强度值。
The high-temperature long-term strength data of metallic materials is one of the important bases for designing and calculating the strength of high-temperature components. The present durable strength test method is time-consuming and expensive. Usually in order to determine a material at a temperature lasting strength data, often take a group of samples (usually not less than 10), under different stress, respectively, for dozens of hours to tens of thousands of hours of testing, this method Which greatly affects the commissioning of new steel grades. Therefore, it is of practical significance to develop a simple and convenient test method for estimating the long-term strength of metal materials. At home and abroad, the long-term strength of high-temperature persistence hardness value has a special introduction.According to the three steel grades of different furnace number, at a number of test temperatures obtained by the corresponding high-temperature hardness and long-lasting strength data. The use of mathematical statistics to explore the relationship between them, and the relationship between the direct use of hardness values can be very quickly. Simply estimate the value of the desired endurance.