標準編號:	GB/T 7233-1987
中文名稱:	鑄鋼件超聲探傷及質量評級標準
英文名稱:	Methods for ultrasonic testing and for specifying quality levels of steel castings
行業分類:	GB    國家標準
發布機構:	國家標準局
發布日期:	1987-02-04
實施日期:	1987-10-1
標準狀態:	superseded
被新標準替代:	GB/T 7233.1-2009 鑄鋼件 超聲檢測 第1部分：一般用途鑄鋼件
被替代日期:	2010-4-1
翻譯語言:	英文
文件格式:	PDF
中文字符數:	10000 字
翻譯價格(元):	250.0
交付時間:	付款后 1 個工作日

The national standard is the general standard of ultrasonic testing for steel castings. The national standard prescribes the ultrasonic testing method for carbon steel and low alloy steel castings with thickness equal to or more than 30mm and it also prescribed the method for specifying quality levels of steel castings according to ultrasonic testing result. The used ultrasonic testing method is only limited to A-scope pulse-echo method. In the order, the supply and demand consulted the following requirements for steel castings ultrasonic testing. a. The tested region and used probe b. longitudinal wave straight beam probe flaw detection sensitivity c. The steel castings quality level. Different quality level requirements are allowed to put forward for planar discontinuity non-planar discontinuity. The national standard is not applicable to the detection of austenitic stainless steel castings.