多绳摩擦式提升机.doc

文档介绍：硬度换算表(以 HRC 硬度为基准)1 Brinell ( 布氏) Rockwell Hardness ( 洛氏硬度) Rockwell Superficial Hardness ( 罗克韦尔表面硬度) Rockwell C( 洛氏 C) 3000 kgf Rockwell A( 洛氏 A) Rockwell B( 洛氏 B) Rockwell D( 洛氏 D) Approximate 近似 Rockwell C( 洛氏 C) 150 kgf Vickers 10 mm 60 kgf 100 kgf 100 kgf 15 kgf 30 kgf 45 kgf Tensile ( 拉伸) 150 kgf Diamond ( 钻石) Hardness ( 硬度) Ball (球) Diamond ( 钻石) 1//16" ball (1//16 球) Diamond ( 钻石) 1/16" ball (1/16 球) 1/16" ball (1/16 球) 1/16" ball (1/16 球) Strength ( 强度) Diamond ( 钻石) HRC HV HB HRA HRB HRD HR15N HR30N HR45N ksi (MPa) HRC 68940 --- --- --- 68 67900 --- --- --- 67 66865 --- --- --- 66 65832 739 --- --- 65 64800 722 --- --- 64 63772 705 --- --- 63 62746 688 --- --- 62 61720 670 --- --- 61 60697 654 --- --- 60 59674 634 --- --- 59 58653 615 --- --- 58 57633 595 --- --- 57 56613 577 --- --- 56 55595 560 --- 2075 55 54577 543 --- 2015 54 53560 525 --- 1950 53 52544 512 --- 1880 52 51528 496 --- 1820 51 50513 481 --- 68.