SAE J 518 1-2013 Hydraulic Flanged Tube Pipe and Hose Connections 4-Screw Flange Connection Part 1 3 5 MPa to 35 MPa (Code 61)《液压法兰管 管道和软管连接 4-螺栓连接法兰连接 第1部分 3 5 MPa至35 MPa (代码 61)》.pdf

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5、J518 JUN1993 Hydraulic Flanged Tube, Pipe, and Hose Connections, 4-Screw Flange Connection Part 1: 3.5 MPa to 35 MPa (Code 61) RATIONALE Numerous changes have occurred in the industry since this standard was last updated. ISO 6162 was adopted and it added metric bolts. Over the years, SAE J518 has g

6、one from hard inch to inch (metric referenced) and with this revision metric. The metric dimensions needed to be fine-tuned to eliminate conversion errors. The metric numbers in the SAE standard were reference numbers in the old document that moved the acceptance range by as much as 30% of the toler

7、ance when compared to the inch numbers. At the same time, the standard is to be harmonized with the current ISO 6162-1 with the intent of incorporating the changes into an ISO 6162-1 proposed revision. To help eliminate confusion and improve the connection, a minimum of class 10.9 metric (SAE grade

8、8 or better) screws are now required. This revision corrects the numbers, corrects problems with the O-ring groove, increases the radius between the d8and d9flange head dimension, uses a common clearance hole for inch and metric bolts, adds burst pressure and other requirements, changes however, fla

9、nge connections conforming to previous editions of this part of SAE J518 and ISO 6162 might not accommodate the use of this type of washer. Washers, if used, shall conform to ISO 7089 Type A, Class 300HV and be sized for the corresponding screw except for the DN 32 (20) type 2 (inch) size which shal

10、l conform to ASME 18.22.1 type B narrow (HV300). Plain washers conforming to ASME B18.22.1, type B narrow (HV300) series, may be substituted when using Type 2 screws except for the DN 32 (-20) size. The ISO 7089 washer might cause interferences if used with the inch screw in the DN 32 (-20) size. 6.

11、 CORROSION PROTECTION 6.1 External Surfaces and Threads The external surfaces and threads of all carbon steel flanges except weld-on flanged heads shall be plated or coated with a suitable material that passes a 72-h salt spray test in accordance with ASTM B117 (ISO 9227). Any appearance of red rust

12、 during the 72-h salt spray test shall be considered failure, except for the following: a. All internal fluid passages. b. Edges such as hex points, serrations and crests of threads where there can be mechanical deformation of the plating or coating typical of mass-produced parts or shipping effects

13、. c. Areas where there is mechanical deformation of the plating or coating caused by crimping, flaring, bending and other post-plate metal forming operations. d. Areas where the parts are suspended or affixed in the test chamber where condensate can accumulate. Parts manufactured to this standard sh

14、all not be cadmium plated. Hexavalent chromate coatings are not preferred for commercial and industrial usage due to environmental reasons. Internal fluid passages shall be protected from corrosion during storage and shipping. Parts with changes in plating or coating shall be requalified to ensure a

15、ssembly torque is not affected. 6.2 Weld-on Flanged Heads Weld-on flanged heads shall be protected from corrosion by an oil film, phosphate coating or by other means that do not negatively affect weldability to meet a 16-h neutral salt spray test in accordance with ASTM B117 (ISO 9227) unless otherw

16、ise agreed upon by the purchaser and supplier. 6.3 Screws and Washers Screws and washers shall meet the requirements of a 16-h salt spray test in accordance with ASTM B117 (ISO 9227). All screws shall be phosphate coated with an oil finish unless otherwise agreed upon by the purchaser and supplier.

17、The use of a flat washer is recommended where possible. Torque values specified in this part of SAE J518 were determined using phosphate coated, oil finished screws. Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without licens

18、e from IHS-,-,-SAE J518-1 Issued JAN2013 Page 7 of 16 7. WORKMANSHIP 7.1 All Components All connection components shall be free from all hanging burrs, loose scale and slivers that might become dislodged in use, and from all other defects that might affect their serviceability. All machined surfaces

19、 shall have a surface roughness value of Ramax 6.3 m, except where otherwise specified. 7.2 Sealing Surfaces Annular (circumferential) tool marks up to a surface roughness value of ISO 1302-MRR Ramax 3.2 m are acceptable. Scratches with a width greater than 0.13 mm running perpendicular, radial, or

20、spiral to the connector inside diameter on the bottom and outside diameter of the O-ring groove are not acceptable. 7.3 Figures include additional information on surface finish and draft angle requirements. 8. PRESSURE / TEMPERATURE REQUIREMENTS 8.1 Testing Burst test and cyclic endurance testing sh

21、all be conducted in accordance with ISO 19879 to determine that flange connectors conforming to this part of the standard meet the specified pressure/temperature requirements. 8.2 TemperaturesCarbon Steel Flange connectors complying with this part of the standard and made of carbon steel shall be su

22、itable for use at the working pressures given in table 1 when used at fluid temperatures between 40 C and +120 C. Contact manufacturer concerning instructions for assembly at temperatures below 20 C. 8.3 TemperaturesStainless Steel Flange connectors complying with this part of the standard and made

23、of stainless steel shall be suitable for the working pressures given in table 1 when used at temperatures between 60 C and +50 C. Working pressure for connectors made from stainless steel and used at elevated temperatures shall be reduced: 4% above +50 C to = = = = = 13 -8 13.0 8.0 23.0 38.1 19.05 1

24、7.5 8.75 50 33 59 55 51 58 19 -12 19.2 8.5 26.0 See 47.6 23.80 22.2 11.10 56 41 70 63 57 69 25 -16 25.6 8.5 29.5 Table 52.4 26.20 26.2 13.10 63 47 75 69 64 74 32 -20 32.0 10.5 36.5 1 58.7 29.35 30.2 15.10 77 53 84 81 78 83 38 -24 38.2 12.0 41.5 69.9 34.95 35.7 17.85 86 63 99 93 87 98 See 51 -32 51.0

25、 12.0 48.5 Table 77.8 38.90 42.9 21.45 101 76 107 104 102 106 64 -40 63.5 12.5 54.5 1 88.9 44.45 50.8 25.40 113 88 120 117 114 119 76 -48 76.2 14.0 65.5 106.4 53.20 61.9 30.95 135 106 141 138 136 140 89 -56 89.0 15.5 70.0 120.7 60.35 69.9 34.95 144 119 158 151 145 157 102 -64 101.6 15.5 76.0 130.2 6

26、5.10 77.8 38.90 156 131 168 162 157 167 127 -80 127.0 15.5 90.5 152.4 76.20 92.1 46.05 185 157 190 188 186 189 USERS OF THIS PART OF SAE J518 SHOULD ENSURE THAT SUITABLE MATERIAL IS CHOSEN FOR THE PORT TO MAINTAIN THE REQUIRED WORKING PRESSURE, IF CARBON STEEL IS NOT USED. 12. NOTES 12.1 Marginal In

27、dicia A change bar (l) located in the left margin is for the convenience of the user in locating areas where technical revisions, not editorial changes, have been made to the previous issue of this document. An (R) symbol to the left of the document title indicates a complete revision of the documen

28、t, including technical revisions. Change bars and (R) are not used in original publications, nor in documents that contain editorial changes only. PREPARED BY SAE HYDRAULIC HOSE AND HOSE FITTINGS COMMITTEE Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-