GB/T 1786-1990 in English

《GB/T 1786-1990锻制圆饼超声波检验方法》由TC183（全国钢标准化技术委员会）归口，TC183SC19（全国钢标准化技术委员会钢产品无损检测分会）执行，主管部门为中国钢铁工业协会
本标准规定了用平底孔对比试块，以超声浸水技术检验锻制圆饼方法的适用范围、检验人员、检验仪器和设备、对比试块、检验条件和步骤、缺陷的评定、检验报告等。本标准适用于制造转动的（如涡轮盘、压器机盘等）锻制高温合金和合金钢圆饼缺陷的超声波检验。其他用途圆饼的超声波检验经供需双方协商可参照使用。

Scope

This standard specifies the scope of application, inspection personnel, inspection instruments and equipment, comparison test blocks, inspection conditions and procedures, and defects of the method of using flat-bottomed hole comparison test blocks and ultrasonic water immersion technology to inspect forged round cakes (hereinafter referred to as round cakes). assessments, inspection reports, etc. This standard is applicable to the ultrasonic inspection of forged superalloy and alloy steel disc defects in the manufacture of rotating (such as turbine discs, compressor discs, etc.). Ultrasonic inspection of round cakes for other purposes can be used as a reference after negotiation between the supplier and the purchaser.