铝合金半成品用超声波探伤在一家冶金工厂得到了广泛应用。目前有700种以上规格型号的制品采用超声检查。这个厂使用一种机械化的浸入式圆锭超声检查装置(图1)。它可以对长2米、直径300—500毫米的实心和直径达900毫米的空心铸锭进行检查。超声波检查毛料可使检验结果更为充实和可靠,使有缺陷的毛料不投入下一加工工序。对尺寸875×550×2000毫米的空心铸锭的检查表明,显示出缺陷的数量取决于探伤仪灵敏度的调整。但在生产实践中也会记录下来自 Aluminum alloy semi-finished products with ultrasonic testing in a metallurgical plant has been widely used. There are currently more than 700 kinds of models of products using ultrasound. The plant uses a mechanized submerged ingot ultrasound device (Figure 1). It is capable of inspecting open hollow ingots of 2 mm long, 300-500 mm in diameter, solid and up to 900 mm in diameter. Ultrasonic inspection of wool can make the test results more substantial and reliable, so that defective wool is not put into the next processing step. Examination of a hollow ingot of dimensions 875 x 550 x 2000 mm showed that the number of defects indicated depends on the sensitivity of the flaw detector. But in production practice will also record from