文档介绍：外文出处: 《Manufacturing Engineering and Technology—Machining》
外文原文
NDT for Spheroidal graphite cast iron
Scope
This general instruction describes the performance of non-de structive testing of SG-cast iron. Requirements for ex tent of examination and probe selection are not included in this instruction. For each type of ponent such requirements are described in specific CUSTOMER control instructions or in the purchasing specification.
Definitions
DSR (disc shaped reflector) = KSR (kreis shall reflector) = FBH (flat bored hole).
DSR = KSR()=FBH()
References
The latest edition of standards mentioned below shall be used as basis for inspection according to this general instruction:
EN 1290 (MP)
EN 1369-1996 (MP) Quality levels
EN 12454-1998 (VT)
Stahl-Eisen Prüfblatt SEP 1924
EN 12686-3
ASME Sec. V, Article 7
NDT-personnel
Personnel carrying out NDT must as a minimum have qualifications corresponding to one of the following certification schemes:
EN 473/Nordtest Doc. Gen. 010
SNT TC-1A
EN 473
ASME Sec. VIII, Div. 1, App. 6 (for ic particle only).
The quality department of THE CUSTOMER shall evaluate the docu mentation for qualifications before the work menced. Normally THE CUSTOMER will require qualifications corresponding to level II, unless job descriptions anisation charts for the inspection department or testing firm allows the use of level I personnel. For the surface method wet ic particle, certificates petency according to ASME Sec. VIII, Div. 1, Appendix 6 are accepted.
Calibration
All NDT-equipment shall be subjected to a docu mented system for calibration and verification accor ding to present national or international codes.
Validity
This procedure is valid for examination of both ma chined and unmachined cast iron items. Rough sur faces on unmachined items may be smoothly ground to the ex tent necessary to carry through the examination.
Visual examination
All cast surfaces, which on the final