论文部分内容阅读
对镍基高温合金718、铁基高温合金A-286、弹性合金3J3、耐热弹簧钢65WMo以及沉淀硬化不锈钢PH15-7Mo五种材料制成的转子发动机刮片弹簧,经过热处理、松弛稳定化处理后,在自行设计制造的试验机上分别进行了350℃、415℃、450℃及500℃,各600小时的动态模拟试验。对前四种材料还进行了500℃、550℃及600℃各100小时的静态模拟试验。将两种模拟试验方法进行对比表明:动态模拟试验虽然更接近刮片弹簧的实际工作条件,但静态模拟试验在刮片弹簧的选材过程中,已经可以提供较为可靠的数据,并且具有试验周期短,简便易行等优点。通过实验,知道了上述几种材料刮片弹簧的合理使用温度,并为天津动力机厂研制的TZ2120型转子发动机用刮片弹簧选定了718合金。该机使用经合理热处理后的718高温合金刮片弹簧顺利地通过了装机600小时台架试验。
The rotor blade springs made of five materials of nickel-base superalloy 718, iron-based superalloy A-286, elastic alloy 3J3, heat-resistant spring steel 65WMo, and precipitation-hardened stainless steel PH15-7Mo were heat-treated, relaxed and stabilized After that, the dynamic simulation tests of 350 ℃, 415 ℃, 450 ℃ and 500 ℃ for 600 hours were conducted on the self-designed testing machine. The first four materials were also subjected to static simulations at 500 ° C, 550 ° C and 600 ° C for 100 hours. The comparison of the two simulation tests shows that although the dynamic simulation test is closer to the practical working conditions of the blade spring, the static simulation test can provide more reliable data during the selection process of the blade spring, and has the advantages of short test period , Easy to use and so on. Through experiments, we know the reasonable temperature of the above-mentioned material blade springs and selected the 718 alloy for the TZ2120 rotor motor blade developed by Tianjin Power Plant. The machine uses a reasonable heat treatment after the 718 high-temperature alloy blade spring successfully passed the test 600 hours installed bench.