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本试验研究的目的是测定采用电子束焊接的AЛ30铝合金在拖拉机发动机活塞组使用条件下的持久强度、蠕变及其接合性能。 持久强度是在160、260、300和360℃温度下测定的,试验时间为100、1000和3500小时,而蠕变速度是在相同的温度下并且应力变化在3～8公斤力/平方毫米范围内测定的。采用熔融状态下加入碱金属和碱土金属的氯化盐和氟化盐混合剂,在金属铸型内制得AЛ30铝合金试样。 为了实现接合性能试验,在У—3M2装置上,利用УЛ—119电子枪,用电子束焊接了一块尺寸为300×150×30毫米的平板。焊接规范如下:U_(yck)=28千伏,I_n=300毫安,V_(CB)
The purpose of this study was to determine the long-term strength, creep, and joint properties of electron beam welded A-L30 aluminum alloy under the conditions of the tractor engine piston set. Durable strength is measured at temperatures of 160, 260, 300 and 360 ° C, with test times of 100, 1000 and 3500 hours while the creep speed is at the same temperature and the stress change is in the range of 3 to 8 kgf / mm2 Within the determination. A molten steel was added to join the alkali metal and alkaline earth chloride salt and fluoride salt mixture in the mold made of aluminum alloy AUL30. To achieve the bonding performance test, a plate having a size of 300 × 150 × 30 mm was electron beam welded using a УЛ-119 electron gun on the У-3M2 apparatus. The welding specifications are as follows: U_ (yck) = 28 kV, I_n = 300 mA, V_ (CB)