GB/T 37400.14-2019
重型机械通用技术条件第14部分:铸钢件无损探伤
Heavy mechanical general technical specification—— Part 14: Nondestructive test of steel castings
2019-08-30 发布
2020-03-01 实施
目 次
前言..........................................1
1范围..........................................1
2规范性引用文件......................................1
3术语和定义.......................................2
3.1超声检测......................................2
3.2射线检测......................................2
3.3渗透、磁粉检测...................................3
4 一般要求........................................3
4.1总则.......................................3
4.2检测档案......................................4
4.3检测人员.....................................4
5铸钢件超声检测......................................4
5.1订货时应明确的内容................................4
5.2受检铸件的准备...................................4
5.3检测系统.....................................5
5.4检测仪的校准....................................6
5.5超声可探性的确认..................................6
5.6检测........................................7
5.7缺陷分析......................................9
5.8缺陷尺寸测定....................................9
5.9质量等级.....................................12
5.10检测报告....................................13
6铸钢件射线检测.....................................14
6.1检测前应明确的内容...............................14
6.2像质级别....................................14
6.3设备与器材...................................14
6.4透照方法.....................................16
6.5底片质量要求..................................21
6.6底片观察....................................21
6.7散射线屏蔽....................................22
6.8缺陷影像质量评级方法...............................22
6.9检测报告.....................................25
7铸钢件渗透检测.....................................26
7.1检测前应明确的内容................................26
7.2安全防护.....................................26
7.3检测要求....................................26
7.4检测材料及灵敏度..................................27
7.5 检测工艺.....................................28
7.6显示的评定与质量等级................................31
7.7检测报告......................................32
8铸钢件磁粉检测......................................32
8.1检测前应明确的内容................................32
8.2安全防护.....................................32
8.3方法概述......................................32
8.4表面状态和表面准备................................32
8.5设备和器材....................................33
8.6磁化方法.....................................33
8.7 电流种类.....................................34
8.8磁场方向和有效区.................................34
8.9磁化验证.....................................35
8.10磁粉检测操作...................................36
8.11 观察条件....................................36
8.12退磁......................................36
8.13显示的评定与质量等级...............................37
8.14检测报告.....................................37
附录A（规范性附录）补焊区的检测.............................39
附录B（资料性附录）传输修正及衰减系数..........................41
附录C（资料性附录）DGS（AVG）曲线应用.......................43
附录D（规范性附录）常用灵敏度试片（块）.........................46