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压力容器用钢板超声波探伤JB1150-73 本标准适用于厚度12～120毫米的化学,石油工业压力容器用钢板超声波探伤,也适用于其它工业类似用途的钢板超声波探伤。一、技术操作要求 1.清除被探伤钢板表面影响探伤的氧化皮、锈蚀及油污。 2.使用脉冲反射式探伤仪,探测频率为2.5MHz。耦合方式为直接耦合或充水耦合。探头为单直探头或联合双直探头。 3.用人工标准试块调节探伤灵敏度。人工标准试块要求如下: (1) 试块用钢板应与被探伤钢板的成份相近。
Ultrasonic Flaw Detection of Pressure Vessel Plates JB1150-73 This standard applies to the ultrasonic flaw detection of chemical and petroleum industry pressure vessels with a thickness of 12 to 120 mm and is also applicable to the ultrasonic flaw detection of steel plates of other similar industrial uses. First, the technical operation requirements 1. To be detected on the surface of the steel flaw detection, rust and oil stains. 2. Using pulse reflection flaw detector, the detection frequency is 2.5MHz. Coupling method is direct coupling or water-filled coupling. The probe is a single straight probe or a joint dual probe. 3. With artificial standard test block to adjust the detection sensitivity. Artificial standard test block requirements are as follows: (1) The test piece steel plate should be similar to the composition of the steel plate being inspected.