镁合金铸造筒体的X射线数字成像检测

• 作 者: 周建平 金翠娥 金牛牛
• 机 构: 上海航天精密机械研究所,
• 出 处: 无损检测
• 发表日期: 2015年01期
• 关键词: 镁合金铸造 X射线 数字成像 检测设备 射线机 透照 铸造缺陷 像素尺寸 射线检测 无损检测

将X射线数字成像(DR)技术应用于某型号镁合金筒体质量检测。通过对铸造筒体数字成像检测工艺分析,确定了检测参数,使筒体检测灵敏度、分辨率接近或达到X射线底片检测的水平,能检出筒体疏松、气孔、夹渣、裂纹、偏析等铸造缺陷,实现铸造筒体的无损检测和评价,同时每个筒体检测时间由原来常规底片法的4h缩短到0.5h,加快了批产进度,降低了检测人员工作强度。

The X-ray digital imaging (DR) technology used in a certain type of magnesium alloy cylinder quality testing. By analyzing the digital imaging detection technology of cast barrel, the testing parameters were determined, the detection sensitivity and resolution of the barrel approached or reached the level of X-ray film detection, which could detect the looseness, porosity, slag inclusion, cracks, segregation, etc. Casting defects, to achieve non-destructive testing and evaluation of the casting cylinder, while the detection time of each cylinder from the conventional 4h film method is shortened to 0.5h, speeding up the batch production, reducing the working intensity of the inspectors.