1、International Standard NTERNATIONAL ORGANIZATION FOR STANDARDIZATIONMEYHAPOAHAR OPrAH!JBAUMR 170 CTAHAAPTb43AUWIORGANlSATlON INTERNATIONALE DE NORMALlSATlON Short link chain for lifting purposes - Grade S (61, non- calibrated, for chain slings etc. Chafnes de levage B maillons courts, classe S (6) n
2、on calibrhes, pour Hingues B charnes, etc. First edition - 1980-08-01 iii UDC 621.86.065.4 Ref. No. IS0 3075-1980 (El 8 ; Descriptors : chains, welded link chains, hoisting slings, hoists, specifications, dimensions, dimensional tolerances, tests, mechanical properties. Price based on 8 pages Copyri
3、ght International Organization for Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,-FOREWORD IS0 (the International Organization for Standardization) is a worldwide federation of national standards institutes (IS
4、0 member bodies). The work of developing International Standards is carried out through IS0 technical committees. Every member body interested in a subject for which a technical committee has been set up has the right to be represented on that committee. International organizations, governmental and
5、 non-governmental, in liaison with ISO, also take part in the work. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the IS0 Council. International Standard IS0 3075 was developed
6、by Technical Committee lSO/TC 111, Round steel link chains, chain wheels, lifting hooks and accessories, and was circulated to the member bodies in March 1978. It has been approved by the member bodies of the following countries : Australia Italy Austria Korea, Rep. of Canada Poland Chile South Afri
7、ca, Rep. of Czechoslovakia Spain India Sweden Turkey United Kingdom USA USSR Yugoslavia The member bodies of the following countries expressed disapproval of the document on technical grounds : Belgium France Germany, F.R. Japan Netherlands 0 International Organization for Standardization, 1980 l Pr
8、inted in Switzerland Copyright International Organization for Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,-INTERNATIONAL STANDARD IS0 3075-1980 (E) 1 Short link chain for lifting purposes - Grade S (61, non-
9、calibrated, for chain slings etc. 1 SCOPE AND FIELD OF APPLICATION This International Standard specifies the requirements for lifting chains, grade S (6), non-calibrated, for use on cranes, in chain slings and for general lifting purposes. These are electrically welded round steel short link chains
10、fully heat treated and tested and comply with the general conditions of acceptance of IS0 1834. The range of sizes covered by this International Standard is from 5 to 45 mm. The annex gives a range of temporary additional sizes 6 to 30 mm. 2 REFERENCES ISOIR 388, IS0 metric series for basic thicknes
11、ses of sheet and diameters of wire. ISO/R 643, Micrographic determination of the austenitic grain size of steels. IS0 103511, Dimensions of hot roiled steel bars - Part 1 : Round bars - Metric series. ) IS0 1834, Short link chain for lifting purposes - General conditions of acceptance.2) 3 DEFINITIO
12、NS For the purpose of this International Standard the definitions given in IS0 1834 apply. 4 GENERAL CONDITIONS OF ACCEPTANCE The chain shall comply fully with the requirements of IS0 1834 as well as those of this International Standard. 5 DIMENSIONS 5.1 Size (see IS0 1834, clause 4, Definitions) Th
13、e size of chain shall be one of the sizes listed in table 1, column 1 corresponding to the nominal diameter (d,) of the steel wire (ISO/R 388) or bar (IS0 1035/l) from which the chain is made. NOTE - Control over the size of the material (bar or wire) from I) At present at the stage of draft. (Revis
14、ion of ISOIR 1035/l-1969.) 2) At present at the stage of draft. which the chain is made is important but this international Standard concerns finished chain and must assume that the inspector may not have the opportunity of retrospective measurement of the original material. The chain manufacturer w
15、ill realize the need for the size of this material to be kept within accepted tolerances. 5.2 Material diameter (see IS0 1834 for definition of material diameter and method of measurement) 5.2.1 Tolerance on material diameter For sizes less than 18 mm the diameter d of the material in the finished l
16、ink shall nowhere differ from the nominal f2 diameter by more than _ 6 %, except at the weld. For sizes 18 mm and over, the diameter d of the material in the finished link shall nowhere differ from the nominal diameter by more than +_ 5 %, except at the weld. 5.2.2 Tolerances at the weld The dimensi
17、on of the steel at the weld shall nowhere be less than the diameter d of the steel adjacent to the weld, or exceed it by more than the following tolerances. (See figure 1 and table 1.) Type 1 : 10 % of the nominal diameter in any direction; Type 2 : 20 % of the nominal diameter in the direction perp
18、endicular to the plane of the link and 20 % in other planes; Type 3 : 20 % of the nominal diameter in the direction perpendicular to the plane of the link and 35 % in other planes. NOTE -Type 1 eliminates functional problems such as kinking or locking by severely limiting the weld oversize to 10 96
19、of the nominal diameter. Types 2 and 3 ensure freedom from these hazards by limiting the oversize beyond the 10 % allowed under type 1, to certain areas of the link only (see figure I) thus providing clearance where required. 5.2.3 Area affected dimensionally by welding The area affected dimensional
20、ly by welding shall not extend by more than 0.6 of the material diameter to either side of the centre of the link. 1 Copyright International Organization for Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,-IS0 3
21、075-1980 (E) 5.3 Length and width The dimensions of the length and width of the links shall be as specified in table 1 and illustrated in figure 2. 7 TEST REQUIREMENTS 6 MATERIAL AND MANUFACTURE 6.1 Quality of material The steel shall be produced by the open hearth or electric process or by an oxyge
22、n blown process. In its finished state as supplied to the chain maker it shall meet the following requirements as determined by check analysis on the rod, wire or finished link : It shall be fully killed, shall possess reliable welding quality and shall contain alloying elements in sufficient quanti
23、ties to guarantee the mechanical properties of the chain after appropriate heat treatment. For example steels for grade S chain should contain at least one of the following elements : Nickel Chromium Molybdenum I or their equivalent Neither manganese nor silicon shall in this context be considered a
24、s alloying elements. Its content of sulphur and phosphorus shall be restricted as follows : Cast analysis Check analysis Sulphur max. 0,035 % 0,040 % Phosphorus max. 0,035 % 0,040 % The steel shall be made in conformity with fine grain practice to give an austenitic grain size of 5 or finer when tes
25、ted in accordance with ISO/R 643. This could be accomplished, for example, by ensuring that it contains sufficient aluminium or an equivalent element to permit the manufacture of chain stabilized against strain age embrittlement during service; a minimum value of 0.02 % metallic aluminium is given f
26、or guidance. Within the above limitations it is the responsibility of the chain maker to select steels so that the finished chain, suitably heat treated, meets the mechanical properties specified in this International Standard. 6.2 Heat treatment All chain shall be hardened and tempered before being
27、 subjected to the proof force. 6.3 Proof force The proof force shall be as specified in table 3, column 2 or table 5, column 2 and shall be applied as specified in IS0 1834. 7.1 Mechanical properties and test forces The mechanical properties shall be as specified in table 2 and the test forces to be
28、 applied for each size are specified in table 3 and table 5. 7.2 Selection of samples Samples shall be selected as specified in IS0 1834. The length of the lot from which the inspector selects the samples shall be 200 m or a lesser length. 7.3 Static tensile test 7.3.1 Testing machine and method The
29、 testing machine and method of testing shall be as specified in IS0 1834. 7.3.2 Tensile test The breaking force shall be not less than that specified in table 3, column 3, or table 5, column 3. 7.3.3 Total ultimate elongation The total ultimate elongation as defined in IS0 1834 shall be not less tha
30、n 17 %. 8 INSPECTION 8.1 Provision for inspection The provision for inspection shall be as specified in IS0 1834. 8.2 Acceptance The acceptance procedure shall be as specified in IS0 1834. 9 MARKING 9.1 Quality marking The quality mark for the chain is S or 6. It shall be applied as specified in IS0
31、 1834. 9.2 Identification marking The identification marking shall be as specified in IS0 1834. 9.3 Inspection marking The inspection marking shall be as specified in IS0 1834. 10 TEST CERTIFICATE The manufacturer shall, if required, supply a certificate of test and examination with every supply of
32、chain containing the information detailed in IS0 1834. A typical form is given in IS0 1834, annex C. 2 Copyright International Organization for Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,-IS0 3075-1980 (E) T
33、ype 1 Type 2 - Type3 - e e k-4 W d Section A-A Section A-A d, = size (nominal diameter of the material) d = measured diameter of the material except at the weld d, = measured diameter of the material at the weld (type 1 and 2 welded chain) or weld dimension perpendicular to the plane of the link (ty
34、pe 3 welded chain) G = dimension in other planes (type 3 welded chain) e = length affected by welding on either side of the centre of the link For all welds e =G 0,6 d, Ford,18mm,d=d,+5% Weld tolerance : Type 1 :d, =d+ i,lod” Type 2 : d, = d is20 d” Type 3 : d, = d + it20 d” G zz d f 0,35 d, 0 FIGUR
35、E 1 - Material and weld tolerances 3 Copyright International Organization for Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,-IS0 3075-1980 (E) 1 = outside link length (4,75 d, min. 5 d, max.) W = outside link w
36、idth (3,5 d, max. except at weld) w, = inside link width (I,25 d, min. except at weld) FIGURE 2 -Chain and link dimensions 4 Copyright International Organization for Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,
37、-,-IS0 3075-1980 (E) TABLE 1 - Dimensions of grade S (6) non-calibrated chain (for symbols, see figures 1 and 2) Dimensions in millimetres (I) I (2) I (3) (4) I (5) 1 ) (71 I (8) (9) Nominal Diameter size tolerance d” (d-d,) 5 6,3 7.1 8 9 IO 11.2 12.5 14 16 18 20 22.4 25 28 32 36 40 45 + 0,lO - 0.30
38、 + 0,13 - 0,38 + 0,14 - 0,43 + 0,16 - 0.48 + 0.18 - 0.54 + 0.20 - 0,60 + 0.22 - 0.67 + 0.25 - 0,75 + 0,28 - 0.84 + 0.32 - 0.96 % 0,90 t 1,o ?: I,1 r 1.25 2 1.4 r I,6 f I,8 % 2.0 % 2.25 Maximum tolerance at the weld (see figure I) Type 1 Type 2 and 3 Type 3 (d, - d) W, - d) (G-d) 05 1 .o 1.75 0.63 I,
39、26 2.2 0.71 I,42 2.5 W3 1 a3 28 03 23 3,15 1 ,o 2,o 3,5 I,12 2.24 3.9 I,25 1.4 I,3 32 5,6 23 X6 6,3 2.0 4.0 7.0 2,24 4.48 7.85 2.5 5.0 8175 2.8 5.6 98 3.2 6,4 11.2 3,6 72 12,6 4,O 8.0 14.0 4,5 9,o 15.75 2.5 44 2.8 4.9 Outside link ler-*- “-L- limum lgmS 11rn115 Outside link ,y!Cr 1 width away 1 ne I
40、ink .max. min. (5d,) (4.75 d,) 25 24 32 30 36 34 40 38 45 43 50 47 56 53 63 59 70 66 80 76 90 85 100 95 112 106 125 119 140 133 160 152 180 171 200 190 225 214 from weld Wmax. (3,5 d,) 18 22 25 28 32 35 39 44 49 56 63 70 78 88 98 112 126 140 158 wmrn away from weld Wl I ,25 d,) 6.3 73 8.9 10 11.3 12
41、.5 14 15.7 18 20 23 25 28 32 35 40 45 50 57 NOTE - See annex for temporary additional 5 Copyright International Organization for Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,-IS0 3075-1980 (E) TABLE 2 - Mechan
42、ical properties NOTES I Mechanical property Mean stress at specified minimum breaking force * Mean stressnat proof force 5 Requirement I 630 MPa (N/mm21 315 MPa (N/mm21 Ratio of proof force to specified minimum breaking force 50 % Specified minimum total ultimate elongation 17 % Mean stress at worki
43、ng load limit l57,5 MPa (N/mm2) 1 The stressesquoted in table 2 are obtained by dividing the force by the total cross-section of both sides of the link i.e. they are mean stresses. The stress is in fact not uniform and particularly at the extrados the maximum fibre stress is considerably greater. 2
44、The working load may be selected to comply with national regulations but it must in no case exceed the load in table 3, column 4 or table 5, column 4. TABLE 3 - Grade S (61, non-calibrated, test requirements and working load limits (I) Nominal size dn mm 5 6,3 7, 8 9 10 11,2 12.5 14 16 18 (2) Proof
45、force to which the whole chain is subjected kN 12.4 19.7 25 31.7 40.1 49,5 63 79 99 127 161 (3) Minimum breaking force kN 24.8 39,4 50 63,4 80,2 99 126 158 198 254 322 (4) Working load limit t 0.63 1 ,o 1 ,25 1.6 w 25 32 4,O 5,O 6.3 8S 6 Copyright International Organization for Standardization Provi
46、ded by IHS under license with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,-IS0 3075-1980 (E) ANNEX TEMPORARY ADDITIONAL SIZES (Grade S (6) non-calibrated) These sizes have been added as a temporary measure as an aid to chain selection until the standard sizes
47、 (table 1) are in general international use. TABLE 4 -Dimensions (for symbols, see figures 1 and 2) (2) (3) I I (5) (4) (6) (7) 1 (8) I (9) Nominal size Diameter dil (d-d,) 6 7 6,7 9.5 + 0,12 - 0,36 + 0,14 - 0,42 + 0,17 - 0,52 + 0.19 - 0.57 10.3 + 0,21 - 0,62 11 12 13 13.5 16.7 19 20.6 26,4 30 + 0,2
48、2 - 0,66 + 0,24 - 0.72 + 0,26 - 0,78 + 0.27 - 0,81 + 0.33 - I,00 f 0.95 f 1 ,o fr 1.3 f 1.5 Maximum tolerance at the weld (see figure 1) Type 1 Type 2 and 3 Type3 (d, - d) (d, - d) (G-d) 33 I.2 2, 0.7 I.4 2.45 0,87 1.74 3,05 0.95 1 .g 3.35 I,03 2,06 3.6 1, 22 3,85 I.2 2,4 4.2 I,3 288 4.55 1,35 2.7 4
49、,75 1.67 3,34 5,85 1 ,g 3.8 6.65 2,06 4. 7.2 2.54 5.08 8.9 3.0 50 10.5 Dimensions in millimetres Outside link lengths limits I max. min. (5dJ (4,75 d,) 30 28 35 33 44 41 48 45 i 52 49 55 52 80 57 65 62 68 64 84 79 95 90 103 98 127 121 150 142 Outside link width away from weld Wmax. (3.5 d,) 21 25 8.8 30 33 36 12.9 39 13.8 42 15 46 16.3 47 58 21 67 24 72 26 89 32 105 38 inside link width away from
