,-. ... ..---.- ,.- cu 4s5 3 -2 , "YY VV". I.&"-. dUrCh D//" I.. ,,WJ u :620.179:621.753.1 C E C ~ Z ~ June 7985 do. US; I Technical delivery conditions for ca~tingsmade from metallic materials Steel castings; classification into severity levels - DIN 1690 /-Kq on the basis of non-destructive testina Part 2 r Technische Lieferbedingungen fijr Guastiicke aus metallischen Werkstoffen; StahlguSstiicke; Einteilung nach Gutestufen aufgrund zerstijrungsfreier Prufungen In keeping with current practice in standards published by the International Organization for Standardization (/SO), a comma has been used throughout as the decimal marker. The subclauses marked with two dots 0. give specifications which are optional and may be agreed upon at the time I of ordering. 1 Field of application 2.2.1.2 o o In addition to severity levels of equal value, different severity levels may also be agreed for internal 1.1 As a supplement to the general technical delivery conditions for castings specified in DIN 1690 Part 1, this and external condition. standard gives a classification into various severity levels for the external and internal condition of steel castings 2.2.1.3 Severity level 1 is only applicable for ends for in the as delivered condition (see Explanatory notes). welding and for special surface zones as described in sub- clause 2.2.3. The classification is based on the requirements with regard to the results of nondestructive tests. 2.2.1.4 The shape of the castings affecu their condition and their testability. Apart from this, the testability of a 1.2 This standard does not apply to fabrication welds casting also depends on its surface condition. ifor definition, see DIN 1690 Part 1). For these, special sgreements regarding the internal and external condition 2.2.2 I f no severity level has been agreed a t the time of 2nd checking of these shall be made a t the time of order- ordering, and if not otherwise specified in the material lng. standards, the requirements for severity ievel5 shall apply. 2 Severity levels 2.2.3 0 0 In special cases, a higher, i.e. numerically 2.1 Classification by severity levels lower, severity level as for the remaining wall thickness The classification by severity levels for the external con- may be agreed for an outer layer of the outer zone as dition shall be made on the basis of magnetic particle shown in figure 1 (briefly referred to as "special outer inspection or penetrant inspection on the basis of the zone"), for example in thecase of surfaces to be machined characteristics given in table 1 or table 2 or on the basis by the manufacturer (see subclause 2.3, example 3). of the series of illustrations in Appendices A and 6 . In cases of dispute, the values given in table 1 or table 2 2.2.4 o o For production welds (for definition, see jhall be mandatory. D l N 1690 Part 1 ), the same requiremenn shall apply as for the parent metal, unless other requirements have -he classification by severity levels for the internal con- been agreed at the time of ordering. ,?~rionis based on ultrasonic tests or radiographic tests .or ihe characteristics given in table 3 or table 4 (see sub- clause 3.3.2.1 ). 2.3 Standard designation 2.2 Choice of severity levels The standard designation for the severity level shall con. 2.2.1 8 0 With regard to the permissibility of external sist of the following elements, as shown in the example or ~nternaldiscontinuities in steel castings, specifications below: ,n material standards or in the order, based on the classi- - the term "severity level"; ficat~onby severity levels as in subclause 2.1 and using - the number of this standard; ;tandard designations as in subclause 2.3 may be agreed. For this purpose, the following factors shall be borne in - the symbol S (= surface) for the severity level relating to the external condition (see tables 1 and 2); ~ l n according d to the level, type and distribution of the 'o~as: - the symbol V (= volume) for the severity level, relat- ing to the internal condition (see tables 3 and 4). z.1.1.1o Different severity levels may be agreed for :,fferent areas of the casting. I n such cases, the areas -0ncerned shall be clearly specified, i.e. Example 1: Severity level DIN 1690 - S2 -V4 - bv giving their location and their length and width; - 'n the case of ends for welding and in special surface o o In cases where, contrary to the specifications given :ones as described in subclause 2.2.3, additionally by in subclause 3.3.2.1 the choice of test method i s not being glvlng their depth. left to the manufacturer, the following code letters for I Continued on pages 2 to 16 I 1 Magnetic particle inspection or penetrant Ultrasonic inspection shall be carried out as described in inspection Stahl-Eisen-Prufblatt 1922.1.2.2. 3. magnetic particle ular areas. The series of illustrations shown in Appendix A may be for ultrasonic inspection.2.I In cases where castings assigned to severity levels The following should be observed when making the 01 to 3 have been ordered.2 Ultrasonic inspection 3. and documents on materials testing the choice of test method shall be left tothe manufacturer.2 Radiographic or ultrasonic inspection 3.1 Agreements with regard to testing 3. netizable grades of cast steel. 3. For this reason. ence for thicker castings and for examining production ing of the consignment. unless otherwise specified for partic- (ferromagnetic) grades of cast steel.1 Unless otherwise agreed at the time of ordering.3).MS2 . shall be complied with. 3. The procedure for on all surfaces to be machined: MS1.3. inspection shall be carried out. In the case of castings made from non-mag.1. E. in the case of series production). Each illustration corre- Example 3: sponds to one of the severity levels 1 to 5 as in table 1 Severity level DIN 1690 . for penetrant inspection.1).MS2 .2 e Scope of test programme The size of defect to be detected and the casting geo- Unless otherwise agreed a t the time of ordering (for metry shall also be taken into account in choosing the example. where this ence for examining thin-walled castings. 2. 3.3. It lies in the range between 50 and 100 mm.RV4 inspection (see subclause 2. footnote 2). as a supplement to ultrasonic ordering.3 Radiographic inspection used for verifying that the steel casting conforms to the requirements regarding the external condition as given in DIN 54 109 Part 1 and Part 2 shall apply for radiographic table 1 or 2.3. and in the case of castings of magnetizable Part 2. . test class A. only radiographic deemed to have been agreed.1. shall be agreed a t the time of and. R. it is not possible to define ings being supplied shall be appropriately tested at the precisely the demarcation between the terms "thick" points to which the severity level applies.2 In cases where castings assigned to severity level In the case of ferritic (including pearlitic and martensitic) 4 or 5 have been ordered. Test class Ishall apply for severity levels 1 to 4 and test Prufblart (Iron and steel t e s t sheet) 1935 or penetrant class I1 for severity level 5. and also Dl N 54 111 Part 2. retesting for conformity of choice: the consignment with the relevant requirements is also In the case of austenitic materials. used as an aid for assessing non-linear indications on the for radiographic inspection.3. inspection. table 3. and "thin" used above. as shown in examples 2 and 3: machined surfaces unless otherwise agreed (see subclause for magnetic particle inspection. an inspection certificate B as specified in DIN 50 049 Ultrasonic inspection should be considered for prefer- shall be issued giving the results of non-destructive test.3. in a zone determining the severity level is to place a frame with down to 20 mm below the surface: UV1 inside dimensions of 148 rnm X 105 mm (size A6) over the least favourable area and to find the same or the next least favourable reference illustration in the series.3 Unless otherwise agreed a t the time of ordering. Image quality class 11 as in DIN 54 109 Part 2 inspection shall be used for preference. line 111. where necessary. 3 Testing 3. radiographic inspection shall be used for prefer- consignment with the relevant requirements. Magnetic particle inspection as specified in Stahl-Eisen. inspection for determining the type of defect (see 3. penetrant inspection shall The test shall be carried out as described in DIN 54 111 be used.3 Test methods 3. test method. ends for welding is desired by the purchaser. or severity levels 01 to 5 as in table 2. welds and as a supplement to radiographic inspection for determining the position in depth and the thickness of defects (see table 4. all the cast. retesting for conformity of the steels.Page 2 DIN 1690 Part 2 the t e s t method shall beadded to the symbol for the Magnetic particle inspection shall be used for inspecting severity level. testing as specified in Stahl-Eisen-Prufblatt 1936 shall be 3. basis of magnetic particle inspection and the series of illustrations shown in Appendix B may be used for Example 2: assessing non-linear indications on the basis of penetrant Severity level Dl N 1690 . u.RV4. M.
Report "DIN 1690- 2-TDC of Metallic Casting(Steel Casing)"