GB/T 232-1999 Translated English of Chinese Standard. (GBT 232-1999, GB/T232-1999, GBT232-1999): Metallic Materials ?C Bend Test [Buy--download True-PDF in 3-second: https://play.google.com/books > Sign in > This BOOK > "3-dots" > Export > Save as "*.pdf"]This Standard specifies the principle for bend test method, symbols, test devices, specimen, test procedures, assessment of test results, and test report. This Standard is applicable to the bend test for specimen that is specified by the relevant product standards of the metallic materials; and determine its bending plastic deformation. However, it is not applicable to the bend tests for metallic tubes and metallic welded joints. |
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25 mm according angle of bend apply continuous pressure arms axis bend test bending center Bending device bending head clamp contact see Figure cross-section whose inscribed cushion block device with roller device with turning diameter or polygonal ends to further Figure 4c further bend GB/T greater than 25mm initially the bending inscribed circle diameter international standard ISO less than 3mm Location and Preparation machined Mechanical Testing member bodies Metallic Materials method shown parallel pressing plates Pieces for Mechanical place the specimen plastic deformation plates see Figure polygonal cross-section Preparation of Test reaches the specified relevant product standard requirements of relevant rollers see Figure rounding radius shown in Figure slipper block specified angle specified bending angle specified distance specified in ISO specimen is bent specimen shall meet Steel Products Steel Research Institute sufficient hardness Technical Committee test principle Thickness or diameter turning plate Unless otherwise specified unmachined V-block width or diameter