USER'S MANUAL HR Series Portable Rockwell/Superficial
Contents
1. gt l a 2 B SIB 5 EA a E z amp Ram S g e sis We E 2 ag BEJ amp Bg 250 53 0 774 874 713 58 3 561 552 1899 1917 1888 1947 1901 1929 33 5 717 87 6 71 8 58 8 569 561 1930 1951 1936 1966 54 0 779 879 72 2 594 578 569 1961 1986 1971 2006 545 78 2 88 1 72 6 599 587 577 1993 2022 2008 2047 55 0 78 5 88 4 73 1 60 5 596 585 2026 2058 2045 2090 55 5 78 7 88 6 73 5 61 1 606 593 2135 56 0 79 0 88 9 739 617 615 601 2181 56 5 793 89 1 744 622 625 608 2230 570 79 5 894 74 8 62 8 635 616 2281 575 798 89 6 75 2 63 4 645 622 2334 58 0 80 1 89 8 75 6 63 9 655 628 2390 58 5 80 3 90 0 76 1 645 666 634 2448 59 0 80 6 90 2 76 5 65 1 676 639 2509 59 5 80 9 90 4 769 65 6 687 643 2572 15 Table B Conversion value of hardness and strength of mild steels Hardness Tensile Rockwell Superficial Rockwell Vickers Brinell strength of HBS mild steels HRIST HR30T HR45T HV F D 10 F D 30 60 0 80 4 56 1 30 4 105 02 375 60 5 80 5 56 4 30 9 105 102 377 61 0 80 7 56 7 31 4 106 103 379 61 5 80 8 57 1 31 9 107 03 381 62 0 80 9 57 4 32 4 108 04 382 62 5 81 1 57 7 32 9 108 104 384 63 0 81 2 58 0 33 5 109 05 386 63 5 81 4 58 3 34 0 10 05 388 64 0 81 5 58 7 34 5 10 106 390 64 5 81 6 59 0 35 0 111 06 393 65 0 81 8 59 3 35 5 12 07 395 65 5 81 9 59 6 36 13 107 397 66 0 82 1 59 9 36 6 14 108 3992. 9 Standard Package Standard package of PHB 150Brinell Hardness Tester 1 Tester 1 steel ball indenter 1 Flat anvil 1 V anvil 1 Brinell standard hardness block 1 Holding handle 1 Pin removal tool 1 Pack of shear pins 250 pieces 1 Impact cylinder 1 Reading microscope 20x 2 Rubber protective caps 1 Carrying case 1 Manual 10 Optional Accessories and Spare Parts Steel ball indenter Carbide ball indenter Brinell standard hardness block Test head Shear pins a pack of 250pcs Standard package of PHB 1 Brinell Hardness Tester 1 Test head 1 Impact cylinder 1 Indenter 1 Holding handle 1 Pack of shear pins 250 pieces 1 Peading microscope 20x 1 Brinell standard hardness block 1 Pin removal tool 1 Carryingcase 1 Manual Hemispherical spot anvil used for testing tubing or curled specimens Small flat anvil used for testing small specimens 40x reading microscope used for 4 0mm carbide indenter 3 Ib hammer Appendix A Indentation Brinell Hardness Table 1 C Clamp Tester Steel Indenter 7 26mm Indentation Indentation Indentation Indentation Diameter Hardness Diameter Hardness Diameter Hardness Dlaimeter Hardness HB HB HB HB 200 235 340 270 2620 305 2945 201 4756 236 3460 271 2620 3080 2026 202 4712 237 3430 272 2600 307 2012 203 4668 238 3400 273 2580 308 1998 204 4624 239 3370
3. 274 2560 309 1984 i s s 205 4580 240 3340 275 2540 310 1970 206 4540 241 3314 276 2822 311 1956 207 4500 242 3288 277 2804 312 1942 208 4460 243 3262 278 2486 313 1928 209 4420 244 3236 279 2468 314 1914 In Fee 210 4380 245 3210 280 2450 345 1900 211 4342 246 3184 281 2432 316 1888 242 4304 247 3158 282 2414 317 1876 213 4266 248 3132 283 2396 318 1864 214 4228 249 3106 284 2378 349 1852 NU FREIE 215 4190 250 3080 285 2360 32 1840 216 4154 251 3058 286 2344 321 1828 217 4118 252 3036 287 2328 322 1816 218 4082 253 3014 288 2312 323 1804 219 4046 254 2992 289 2206 324 1792 a DT REENEN ae EECH DE 220 4010 255 2970 290 2280 325 1780 221 3974 256 2046 291 2264 326 1768 222 3938 257 2922 292 2248 327 1756 223 3902 258 2898 293 2232 328 1744 224 3866 259 2874 294 2216 329 1732 pda eer 225 3830 260 2850 295 2200 330 1720 226 379
4. 66 5 82 2 60 3 37 15 08 402 67 0 82 3 60 6 37 6 15 109 404 67 5 82 5 60 9 38 16 110 407 68 0 82 6 61 2 38 6 17 110 409 68 5 82 7 61 5 39 2 18 111 412 69 0 82 9 61 9 39 7 19 112 415 69 5 83 0 62 2 40 2 120 112 418 70 0 83 2 62 5 40 7 121 113 421 70 5 83 3 62 8 41 2 122 114 424 71 0 83 4 63 1 41 7 123 115 427 71 5 83 6 63 5 42 3 124 115 430 72 0 83 7 63 8 42 8 125 116 433 72 5 83 9 64 1 433 126 117 437 73 0 84 0 64 4 43 8 128 118 440 73 5 84 1 64 7 443 129 119 444 74 0 84 3 65 1 44 8 130 20 447 74 5 84 4 65 4 45 4 131 121 451 75 0 84 5 65 7 45 9 132 122 455 75 5 84 7 66 0 46 4 134 23 459 76 0 84 8 66 3 46 9 135 24 463 76 5 85 0 66 6 47 4 136 25 467 16 Tensile Rockwell Superficial Rockwell Vickers Brinell strength of HBS mild steels HRI5T HR30T HR45T HV o 02 10 F D 30 77 5 85 2 67 3 48 5 139 27 475 78 0 85 4 67 6 49 0 140 128 480 78 5 85 5 67 9 49 5 142 29 484 79 0 85 7 68 2 50 0 143 30 489 79 5 85 8 68 6 50 5 145 132 493 80 0 85 9 68 9 51 0 146 33 498 80 5 86 1 69 2 51 6 148 34 503 81 0 86 2 69 5 52 149 136 508 81 5 86 3 69 8 52 6 151 37 513 82 0 86 5 70 2 53 152 38 518 82 5 86 6 70 5 53 6 154 140 523 83 0 86 8 70 8 54 156 152 529 83 5 86 9 71 1 54 7 157 154 534 84 0 87 0 71 4 55 2 159 155 540 84 5 87 2 71 8 55 7 161 156 546 85 0 87 3 72 1 56 2 163 158 551 85 5 87 5 72 4 56 7 165 159 557 86 0 87 6 72 7 572 166 161 563 86 5 87 7 73 0 57 8 168 163 570 87
5. hole of protective cap The purposes of the cap are to protect the surface of the specimen and prevent shear pin from spattering 4 1 4 Install the test head into the bottom of the spiral tube 4 1 5 Check and confirm to bring the thin screw which is under the handle about 10 20mm up above the spiral tube If not operate according to Step 4 1 9 4 1 6 Place the specimen in the opening of the C Clamp Make sure the back of the specimen completely contacts the anvil and the indenter is perpendicular to the tested surface of the specimen Rotate the handle clockwise drive the spiral tube down and clamp the tester on the specimen After the indenter reaches the specimen continue rotating the handle to drive the thin screw down until a breaking sound is heard which means the shear pin is broken and the force application is completed 4 1 7 Rotate the handle counterclockwise and raise the spiral tube 4 1 8 Take out the test head from the lower part of the spiral tube and take off the rubber protective cap Remove the broken shear pin and push the indenter out with the pin removal tool 4 1 9 Hold the lower part of the spiral tube rotate the handle counterclockwise and raise the thin screw up about 10 20mm above the spiral tube Do make sure to raise the thin screw up after each test 4 1 10 Use the reading microscope to read the indentation diameter in two perpendicular directions Refer to Section 4 4 for the instructions of the reading microscope
6. 0 87 9 73 4 58 3 170 164 576 87 5 88 0 73 7 58 8 172 166 582 88 0 88 1 74 0 59 3 174 168 589 88 5 88 3 74 3 59 8 176 170 596 89 0 88 4 74 6 60 3 178 172 603 89 5 88 6 75 0 60 9 180 174 609 90 0 88 7 75 3 61 4 183 176 617 90 5 88 8 75 6 61 9 185 178 624 91 0 89 0 75 9 62 4 187 180 631 91 5 89 1 76 2 62 9 189 182 639 92 0 89 3 76 6 63 4 191 184 646 92 5 89 4 76 9 64 0 194 187 654 93 0 89 5 77 2 64 5 196 189 662 93 5 89 7 ADD 65 0 199 192 670 17 Hardness Tensile Rockwell Superficial Rockwell Vickers Brinell strength of HBS mild steels HRIST HR30T HR45T HV o MPa F D7 10 F D 30 18
7. 3 42 148 6 2 11 455 8 2 55 297 0 2 99 207 6 3 43 147 4 2 12 451 6 2 56 294 2 3 00 206 0 3 44 146 2 2 13 447 4 2 57 291 4 3 01 204 4 3 45 145 0 2 14 443 2 2 58 288 6 3 02 202 8 3 46 143 6 2 15 439 0 2 59 285 8 3 03 201 2 3 47 142 2 2 16 435 0 2 60 283 0 3 04 199 6 3 48 140 8 2 17 431 0 2 61 280 8 3 05 198 0 3 49 139 4 2 18 427 0 2 62 278 6 3 06 196 6 3 50 138 0 2 19 423 0 2 63 276 4 3 07 195 2 3 51 136 8 2 20 419 0 2 64 274 2 3 08 193 8 3 52 135 6 2 21 415 2 2 65 272 0 3 09 192 4 3 53 134 4 2 22 411 4 2 66 270 0 3 10 191 0 3 54 133 2 2 23 407 6 2 67 268 0 3 11 189 6 3 55 132 0 2 24 403 8 2 68 266 0 3 12 188 2 3 56 130 6 2 25 400 0 2 69 264 0 3 13 186 8 3 57 129 2 2 26 396 4 2 70 262 0 3 14 185 4 3 58 127 8 2 27 392 8 2 71 260 0 3 15 184 0 3 59 126 4 2 28 389 2 2 72 258 0 3 16 182 6 3 60 125 0 2 29 385 6 2 73 256 0 3 17 181 2 3 61 123 8 2 30 382 0 2 74 254 0 3 18 179 8 3 62 122 6 2 31 378 4 2 75 252 0 3 19 178 4 3 63 121 4 2 32 374 8 2 76 250 0 3 20 177 0 3 64 120 2 2 33 371 2 2 77 248 0 3 21 175 8 3 65 119 0 2 34 367 6 2 78 246 0 3 22 174 6 3 66 117 6 2 35 364 0 2 79 244 0 3 23 173 4 3 67 116 2 2 36 360 4 2 80 242 0 3 24 172 2 3 68 114 8 2 37 356 8 2 81 240 0 3 25 171 0 3 69 113 4 2 38 353 2 2 82 238 0 3 26 169 6 3 70 112 0 2 39 349 6 2 83 236 0 3 27 168 2 3 71 110 8 2 40 346 0 2 84 234 0 3 28 166 8 3 72 109 6 2 41 342 6 2 85 232 0 3 29 165 4 3 73 108 4 2 42 339 2 2 86 230 2 3 30 164 0 3 74 107 2 2 43 335 8 2 87 228 4 3 31 162 8 3 75 106 0 2
8. 4 1 11 Check Appendix A or Appendix B with the average indentation diameter to get the Brinell hardness value 4 2 Instructions for the Hammer Impact Tester The hammer impact tester does not include the C Clamp It only includes the test head impact cylinder holding handle and hammer The hardness testing by hammer impact tester is a kind of dynamic hardness testing The hardness testing by hammer impact tester is a kind of dynamic hardness testing 4 2 1 Put a shear pin into the horizontal hole of the test head Push the indenter into the bottom hole of the test head with the spherical surface out and make sure it contacts the shear pin 4 2 2 Place the test head into impact cylinder 4 2 3 Put the handle on the specimen Put the impact cylinder into the handle and make sure the bottom of the impact cylinder rest firmly on the specimen 4 2 4 Use the flat side of a 3 Ib 1 5kg hammer to apply a sharp blow on top of the test head The shear pin must be broken at the first blow If the pin 1s not broken another blow must be applied in order to remove the pin and the result must be ignored 4 2 5 Take out the test head and remove the broken shear pin with the pin removal tool Push the indenter outward off the hole of the shear pin If the shear pin is not completely broken off the test should be considered as invalid Install a new shear pin and test again Be sure to break off the shear pin completely 4 2 6 The dynamic test with a bigger force m
9. 75 130 0 2 74 256 0 3 08 199 8 3 42 160 0 3 76 129 2 2 75 254 0 3 09 198 4 3 43 159 0 3 77 128 4 2 76 252 2 3 10 197 0 3 44 158 0 3 78 127 6 2 77 250 4 3 11 195 6 3 45 157 0 3 79 126 8 2 78 248 6 3 12 194 2 3 46 156 0 3 80 126 0 2 79 246 8 3 13 192 8 3 47 155 0 3 81 125 2 2 80 245 0 3 14 191 4 3 48 154 0 3 82 124 4 2 81 243 2 3 15 190 0 3 49 153 0 3 83 123 6 2 82 241 4 3 16 188 8 3 50 152 0 3 84 122 8 2 83 239 6 3 17 187 6 3 51 151 0 3 85 122 0 11 Appendix E Indentation Brinell Hardness Table 5 Hammer Impact Carbide Indenter 4mm Diameter HB Diameter HB Diameter HB Diameter HB 1 55 1 79 596 0 2 03 462 9 2 27 359 4 1 56 1 80 589 8 2 04 457 8 2 28 355 6 1 57 1 81 585 0 2 05 452 8 2 29 351 8 1 58 1 82 580 2 2 06 447 8 2 30 348 0 1 59 1 83 575 4 2 07 442 9 2 31 344 6 1 60 1 84 570 6 2 08 437 9 2 32 341 2 1 61 1 85 565 8 2 09 433 0 2 33 337 8 1 62 1 86 559 3 2 10 428 0 2 34 334 4 1 63 1 87 552 8 2 11 423 7 2 35 331 0 1 64 1 88 546 4 2 12 419 4 2 36 327 3 1 65 1 89 539 9 2 13 415 2 2 37 323 6 1 66 1 90 533 4 2 14 410 9 2 38 319 8 1 67 1 91 528 1 2 15 406 6 2 39 316 1 1 68 1 92 522 8 2 16 402 1 2 40 312 4 1 69 1 93 517 4 2 17 397 6 2 41 309 5 1 70 1 94 512 1 2 18 393 0 2 42 306 6 1 71 1 95 506 8 2 19 388 5 2 43 303 8 1 72 1 96 501 0 2 20 384 0 2 44 300 9 1 73 1 97 495 3 2 21 380 6 2 45 298 0 1 74 1 98 489 5 2 22 377 2 2 46 294 6 1 75 1 99 483 8 2 23 373 8 2 47 291 3 1 76 2 00 478 0 2 24 370 4 2 4
10. Diameter HB Diameter HB Diameter HB 1 45 742 0 1 71 614 0 1 97 471 9 2 23 366 8 1 46 735 2 1 72 608 3 1 98 466 9 2 24 363 4 1 47 728 4 1 73 602 5 1 99 462 0 2 25 360 0 1 48 721 6 1 74 596 8 2 00 457 0 2 26 356 8 1 49 714 8 1 75 591 0 2 01 452 8 2 27 353 6 708 0 1 76 584 9 2 02 448 5 2 28 350 4 701 4 1 7 578 8 2 03 444 3 2 29 347 2 694 8 Ti 572 8 2 04 440 0 2 30 344 0 688 2 566 7 2 05 435 8 2 31 340 8 681 6 1 80 560 6 2 06 431 6 2 32 337 6 675 0 555 5 2 07 427 5 2 33 334 4 673 5 S 550 4 2 08 423 3 2 34 331 2 672 0 545 4 2 09 419 2 2 35 328 0 668 9 540 3 2 10 415 0 2 36 325 5 665 7 535 2 2 11 411 0 2 37 323 0 662 6 1 86 529 4 2 12 407 0 2 38 320 4 658 9 523 7 2 13 403 0 2 39 317 9 655 2 517 9 2 14 399 0 2 40 315 4 651 4 512 2 2 15 395 0 2 41 312 6 647 7 3 506 4 2 16 391 4 2 42 309 7 644 0 501 5 2 17 387 8 2 43 306 9 639 2 1 92 496 6 2 18 384 2 2 44 304 0 634 3 491 6 2 19 380 6 2 45 301 2 629 5 486 7 2 20 377 0 624 6 1 95 481 8 2 21 373 6 619 8 476 8 2 22 370 2 Appendix C Indentation Brinell Hardness Table 3 Hammer Impact Steel Ball Indenter 7 26mm for Steel Diameter HB Diameter HB Diameter HB Diameter HB 2 05 484 0 2 49 315 4 2 93 217 6 3 37 155 2 2 06 479 2 2 50 312 0 2 94 215 8 3 38 153 8 2 07 474 4 2 51 309 0 2 95 214 0 3 39 152 4 2 08 469 6 2 52 306 0 2 96 212 4 3 40 151 0 2 09 464 8 2 53 303 0 2 97 210 8 3 41 149 8 2 10 460 0 2 54 300 0 2 98 209 2
11. aligned with the long scale mark d Fasten the three screws 5 Verification The Brinell standard hardness block is used to calibrate the Brinell tester The test result on the test block should be close to the hardness of testing pieces Impact on testing blocks by hardness tester and get indentation measuring the average diameter value of indentation by microscope then get the hardness value aftercheck appendix The error of this tester is the difference between this value and the value of testing block 6 Cautions and Tips 61 When testing with the Clamp the thin screw must be brought about 20mm up before testing If not the thin screw cannot drive the test force on the specimen and it may bedamaged 6 2 Do not disassemble the spiral tube The tester will be damaged permanently and the warranty will be void 6 3 When the hardness of specimen is greater than 400HB the carbide indenter must be used 6 4 Indenters are normal wear items and are not covered by the warranty The carbide indenter is more brittle and more easily broken than the steel indenter 6 5 To protect the specimen surface from the impact cylinder a cardboard with a hole bigger than indenter can be placed between the impact cylinder and the specimen 6 6 Wear safety goggles and gloves to prevent possible injury 6 Cautions and Tips 7 Factors Affecting Testing Accuracy 7 1 Specimen Surface The surface of the specimen should be smooth and clean for the be
12. 100 400HB 4 0mm carbide spherical surface indenter Optional range 400 650HB Opening size HxD 150mmx100mm Net weight C clamp 4 2kg Hammer impact 0 8kg 4 Operation Instructions 4 1 Instructions for the C Clamp Tester The portable hardness testers includes the C Clamp which is a kind of static test 4 1 1 Indenter Selection According to the expected hardness of the testing piece choose the suitable indenter When testing the softer metal with the hardness lower than 400HB choose the steel spherical surface indenter with a diameter of 7 26mm when testing hard steel materials with the hardness higher than 400HB choose the carbide spherical surface indenter with a diameter of 4 0mm 4 1 2 Anvil Selection Choose an appropriate anvil to fit the shape and size of the specimen and install it in the bottom of the C Clamp The flat anvil is for flat blocks or sheets the V anvil is for cylinders the dome anvil is for curled sheets and pipes The right anvil should provide a firm support for the specimen and there should be no slipping or distortion when the force is applied 4 1 3 Put a shear pin into the horizontal hole of the test head Push the indenter into the bottom hole of the test head with the spherical surface out and make sure it contacts the shear pin Cover the bottom of the test head with the rubber protective cap in order that the cap contacts the bottom of the test head closely the indenter should come out from the central
13. 4 261 2828 296 2184 331 1710 227 3758 262 2806 297 2168 332 1700 228 3722 263 2784 298 2152 333 1690 229 3686 264 2762 299 2136 334 1680 prox p le gto 230 3650 265 2740 300 2120 335 1670 231 3618 26 2720 2104 336 1660 232 3586 267 2700 302 2088 337 160 233 3554 268 2680 303 2072 338 1640 L 234 3522 269 2660 304 2056 339 1630 C Clamp Tester Steel Indenter 7 26mm Indentation Diameter Hardness HB mm Indentation Diameter mm 124 1116 1108 100 1092 Hardness Indentation Diameter Hardness HB mm E ug Bi i EB i i i i i m 3 6 3 a 4 peu lh jP J cst 345 1570 364 1388 383 1236 402 1084 344 156 0 36 138 0 384 1228 403 1076 347 1550 366 1372 385 1220 404 1068 344 1540 36 1364 386 1212 405 1060 a iu m m m m EI B E m L E m m En m L Indentation Diameter hardness HB mm 1054 R S IE HE 1048 1042 103 6 103 0 1024 i xli 0 SSES TESTES 130 8 101 8 1012 100 6 100 0 I 00 Appendix Indentation Brinell Hardness Table 2 C Clamp Tester Carbide Indenter 4mm Diameter HB
14. 4 353 317 310 1078 034 1036 1020 015 1041 1039 1034 340 674 764 539 359 321 314 1092 048 1051 1034 029 1056 1052 1047 345 67 7 76 7 544 36 5 326 318 1105 064 1067 1048 043 1071 1066 1060 35 0 679 TIO 548 370 331 323 119 074 1082 1063 058 1087 1079 1074 35 5 67 9 TIO 553 37 6 335 327 1133 088 1098 1078 074 1103 1094 1087 13 toe ee m i a S EN Rockwell Superficial Rockwell Vickers 2 es S Se e e 2 L s Tis 28 29 5 gt 5 E 2 a EA 5 55 amp a E E m a E z S22 S z SIS S 98 E SIE 36 0 684 77 5 55 8 38 2 340 332 1147 1102 1114 1093 1090 1119 108 01 365 68 7 718 562 388 345 336 1162 1116 1131 109 1106 1136 123 1116 370 69 0 78 1 56 7 39 4 350 341 117 1131 1148 125 1122 1153 139 30 375 692 784 57 2 40 0 355 345 1192 1146 1165 142 1139 1171 155 45 38 0 69 5 78 7 57 6 40 6 360 350 1207 1161 1183 159 1157 1189 171 61 38 5 69 7 79 0 58 1 412 365 355 1222 176 1201 177 174 1207 187 1170 76 39 0 70 0 79 3 58 6 418 371 360 1238 192 1219 195 192 1226 1204 1195 93 39 5 70 3 79 6 59 0 424 376 365 1254 208 1238 1214 21 1245 1222 219 1209 40 0 70 5 79 9 59 5 43 0 381 370 370 1271 225 1257 1233 230 1265 1240 243 1226 40 5 70 8 80 2 60 0 43 6 387 375 375 1288 242 1276 1252 249 128
15. 44 332 4 2 88 226 6 3 32 161 6 3 76 104 6 2 45 329 0 2 89 224 8 3 33 160 4 3 77 103 2 2 46 325 6 2 90 223 0 3 34 159 2 3 78 101 8 2 47 322 2 2 91 221 2 3 35 158 0 3 79 100 4 2 48 318 8 2 92 219 4 3 36 156 6 3 80 99 0 10 Appendix D Indentation Brinell Hardness Table 4 Hammer Impact Steel Ball Indenter 7 26mm for Cast Iron Diameter HB Diameter HB Diameter HB Diameter HB 2 50 308 0 2 84 237 8 3 18 186 4 3 52 150 0 2 51 305 8 2 85 236 0 3 19 185 2 3 53 149 0 2 52 303 6 2 86 234 4 3 20 184 0 3 54 148 0 2 53 301 4 2 87 232 8 3 21 182 8 3 55 147 0 2 54 299 2 2 88 231 2 3 22 181 6 3 56 146 0 2 55 297 0 2 89 229 6 3 23 180 4 3 57 145 0 2 56 294 6 2 90 228 0 3 24 179 2 3 58 144 0 2 57 292 2 2 91 226 4 3 25 178 0 3 59 143 0 2 58 289 8 2 92 224 8 3 26 176 8 3 60 142 0 2 59 287 4 2 93 223 2 3 27 175 6 3 61 141 2 2 60 285 0 2 94 221 6 3 28 174 4 3 62 140 4 2 61 282 8 2 95 220 0 3 29 173 2 3 63 139 6 2 62 280 6 2 96 218 4 3 30 172 0 3 64 138 8 2 63 278 4 2 97 216 8 3 31 171 0 3 65 138 0 2 64 276 2 2 98 215 2 3 32 170 0 3 66 137 2 2 65 274 0 2 99 213 6 3 33 169 0 3 67 136 4 2 66 272 0 3 00 212 0 3 34 168 0 3 68 135 6 2 67 270 0 3 01 210 4 3 35 167 0 3 69 134 8 2 68 268 0 3 02 208 8 3 36 166 0 3 70 134 0 2 69 266 0 3 03 207 2 3 37 165 0 3 71 133 2 2 70 264 0 3 04 205 6 3 38 164 0 3 72 132 4 2 71 262 0 3 05 204 0 3 39 163 0 3 73 131 6 2 72 260 0 3 06 202 6 3 40 162 0 3 74 130 8 2 73 258 0 3 07 201 2 3 41 161 0 3
16. 5 1258 267 1244 41 0 71 1 80 5 604 442 393 380 381 1305 260 1296 1273 269 1306 1277 290 1262 415 73 80 8 60 9 44 8 398 385 386 1322 278 1317 1293 289 1327 1296 313 1280 42 0 71 6 811 613 454 404 391 392 1340 296 1337 1314 310 1348 1316 336 1299 42 5 71 8 814 61 8 459 410 396 297 1359 315 1358 1336 331 1370 1336 359 1319 475 74 5 843 664 51 8 475 463 1575 546 1591 1581 568 1616 1569 594 1562 48 0 74 7 84 6 66 8 524 482 470 1600 574 1617 1608 595 1643 1595 620 1592 48 5 750 849 673 530 489 478 1626 603 1643 1636 622 1671 1623 646 1623 49 0 753 85 2 67 7 53 6 497 486 1653 633 1670 1665 649 1699 1651 674 1655 49 5 75 5 85 5 682 542 504 494 1681 665 1697 1695 677 1728 1679 702 1689 50 0 75 8 85 7 68 6 54 7 512 502 1710 698 1724 1724 706 1758 1709 731 1725 50 5 76 1 86 0 69 1 553 520 510 732 1752 1755 735 1788 1739 761 51 0 763 863 69 5 559 527 518 768 1780 1786 764 1819 1770 792 515 76 6 86 6 70 0 56 5 535 527 806 1809 1818 794 1850 1801 824 520 769 86 8 704 57 1 544 535 845 1839 1850 825 1881 1834 857 52 5 77 1 87 1 709 57 6 552 544 1869 1883 856 1914 1867 892 14 toe Re m z Rockwell Superficial Rockwell Vickers e z 5 7 e gt 6 s aE 3 si E s gt 5 gc
17. 8 287 9 1 77 2 01 473 0 2 25 367 0 2 49 284 6 1 78 2 02 467 9 2 26 363 2 2 50 281 2 12 Appendix F Conversion Value of Hardness and Strength of Ferrous Metal Table conversion value of hardness and strength of all kinds of steels Tensile strength nate Rockwell Superficial Rockwell Vickers Berg A 3 SS 8 v 1 5 25 2 HRC HRA HRI5N HR30N HRASN HV HBS HBW 2 amp 3 z 3 S a T 5 2 512 825 20 0 60 2 68 8 40 7 19 2 226 225 20 5 60 4 69 0 412 19 8 228 227 210 60 7 69 3 417 204 230 229 215 61 0 69 5 422 21 0 233 232 22 0 612 69 8 42 6 215 235 234 22 5 615 700 43 1 22 1 238 237 23 0 61 7 70 3 43 6 22 7 241 240 23 5 62 0 70 6 440 233 244 242 240 62 2 70 8 445 239 247 245 245 62 5 71 1 45 0 24 5 250 248 250 62 8 714 45 5 25 1 253 251 25 5 63 0 71 6 459 25 7 256 254 26 0 633 71 9 464 263 259 257 26 5 63 5 722 469 269 262 260 270 63 8 724 473 275 266 263 275 640 72 7 478 28 1 269 266 28 0 643 73 0 48 3 28 7 273 269 285 64 6 733 487 293 276 273 29 0 648 73 5 492 299 280 276 29 5 65 1 73 8 49 7 30 5 284 280 30 0 653 74 1 50 2 311 288 283 30 5 65 6 744 50 6 317 292 287 310 65 8 74 7 511 323 296 291 315 66 1 749 51 6 329 300 294 320 664 752 520 33 5 304 298 325 66 6 75 5 52 5 34 1 308 302 33 0 66 9 75 8 53 0 34 7 313 306 1065 022 1022 1007 001 1027 1026 1021 33 5 67 1 76 1 53
18. USER S MANUAL HR Series Portable Rockwell Superficial Rockwell Hardness Tester HBR Series Brinell amp Rockwell Hardness Tester Caution 1 Safety goggles must be worn to prevent possible injury 2 Gloves and the handing handle must be used during the hammer impact test Attention Check and confirm to bring the thin screw about 10 20mm up above the spiral tube before testing If not the force can not be loaded and the instrument may be broken 1 Introduction The HB 150 Portable Brinell HardnessTester is designed following the Brinell hardness test method The test force is controlled by a shear pin After reading the diameter of the indention with the reading microscope the Brinell hardness number can be obtained from the lookup table The HB 150 Portable Brinell Hardness Tester has two types of application C clamp and hammer impact see fig 1 It is capable of testing from small to very large specimens It is especially suitable for assemblies inconve nient to be takento the lab and not allowed to be cut The test can be completed in any dire ction to test the hardness of upper lower and lateral part of the specimen The test head itself can be used as a hammer impact tester It can perform the testing by touching one side of the work piece Its accuracy is much higher than any other type hammer impact tester According to the similarity principle of Brinell hardness testing with testing force of 1580kg indenter di
19. ameter of 7 26mm then F D2 30 The test condition of the HB tester is equivalent to the standard Brinell hardness test with 3000kgf and 10mm ball indenter The HB 150 Portable Brinell Hardness Tester can be widely used to test the hardness of forgings castings steels Fig 1 Portable Brinell Hardness Tester Fig 2 Hammer Impact Hardness Tester nonferrous metal and its alloy products and to test the hardness of annealed normalizing and temperedmechanical parts Compared to the rebound type hardness tester the Brinell tester has many advantages such as higher precision fewer factors affecting accuracy and lower requirement on the surface roughness The test result meets the requirements of most drawings without conversion and is more widely accepted in the international business Used as a self product the operation of HB 1 hammer impact Brinell hardness tester can be refered to hammer impact part of HB 150 2 Principle and Structure _ N a b 1 C clamp 6 Test head Indenter holder 2 Spiral tube Rubber protective cap 3 Thin screw 8 Shear pin 4 Handle 9 ndenter 5 Anvil The structure of the instrument is shown in Fig 3 The instrument is composed of C Clamp spriral tube test head thin screw handle anvil and the forve transmission system in the spiral tube See Fig 3 a The sprial tube is used for clamping the specimen and the thin scr
20. ay result in an elliptic indentation The diameter of the indentation must be measured in at least two directions Use the smallest diameter as the valid one to check Appendix C D or E for the Brinell hardness value 4 3 Usage of the Reading Microscope 4 3 1 Look into the ocular with enough light and turn the barrel dial to make the vertical lens line aligned with the 0 scale of the horizontal line Meanwhile the long scale mark should rest on 0 scale of the barrel dial 4 3 2Put the reading microscope on the test piece to locate the indentation in the centre of the viewing field of the microscope Move the microscope to make the vertical line tangential to the left edge of the indentation Press the bottom of the reading microscope turn the barrel dial to make the vertical line tangential to the right edge of the indentation 4 3 3Read the integral part mm of the indentation diameter from the horizontal scale mark then read the 2 digit decimal part of the indentation diameter from the barrel dial 4 3 3When the vertical line is aligned with the 0 scale mark of the horizontal line but the 0 scale mark of the barrel dial is not aligned with the long scale mark it means the microscope is inaccurate Adjustment should be made as follow a Make the vertical lens line aligned with the 0 scale mark of the horizontal line b Unscrew the three screws on the barrel dial c Make the 0 scale mark on the barrel dial exactly
21. ew is for applying test force See Fig 3 b The hammer impact Brinell hardness tester is composed of the test head which is taken off from the spiral tube impact cylinder holding handle and hammer See Fig 2 The principle of the instrument and inside structure of the test head are shown in Fig 4 A shear pin is place in the horizontal hole on the test head The indenter is pushed into the bottom hole and its top touches shear pin The test head is placed into the spiral tube C clamp or impact cylinder hammer impact When the test force is applied on top of the test head the force is transmitted to the indenter through the shear pin which presses indenter against the specimen As soon as the test force reaches 1580kg the shear pin is cut into three segments by the cutting system comprising the test head and the indenter The excessive force will not be transmitted to the I Test Head indenter as it withdraws into bottom hole of the Impact Cylinder Shear Pin test head and a round indentation will remain on the surface of the specimen The indentationdiameter is measured with a reading E uL microscope and the Brinell hardness number can be Specimen obtained from the lookup table Fig 4 Principe of the instrument 3 Technical Parameters Test force 1580kg Tolerance of test force lt 0 5 Accuracy clamp In accordance with 1506506 Hammer impact lt 5 Indenter 7 26mm steel spherical surface indenter range
22. regularly make comparison tests with the standard Brinell hardness testers in order to ensure the accuracy of the testing result The static C Clamp tester can be used as the comparison tester to verify the test result of the hammer impact hardness tester The accuracy of the hammer impact Brinell hardness tester can be lowered by impact effect so the prior selection should be static C Clamp testing if the specimen size allows 8 Factors Affecting Testing Accuracy Brinell hardness test can reflect the average mechanical properties of a large region of the specimen so there is a close relation between the Brinell hardness and other mechanical properties of materials especially tensile strength The approximate conversion equation is o p K HB in this equation ob is the tensile strength value in MPa K is a constant depending on the material The tensile strength of materials can be obtained indirect by testing the Brinell hardness with its approximate value obtained by conversion which is of great importance in practical production by both increasing work efficiency and saving material as well The conversion of hardness tensile strength of some metallic materials is shown below Brinell Hardness Value Approximate Conversion 125 175 O 3 43HB MPa gt 175 O 3 63HB MPa Steel Cast aluminum alloy HERE Op 2 6HB MPa annealed brass bronze O 5 5HB MPa Brass bronze after being cold processed 4 0HB MPa
23. st accuracy The rough surface makes the indentation edge blurry and affects the measurement of the indentation diameters which will increase the dispersity of the test result The rough surface can also reduce the specimen s resistance against the pressing indenter which will result in a lower Brinell hardness value Use a sand paper or polish machine to polish the part to be tested for better accuracy If the oxide coating decarbonization layer dust or dirt remains on the specimen surface the hardness testing will be invalid Remove those things before testing 7 2 Supporting of the specimen Carefully clean the bearing surface of the specimen to ensure that the impurities or dirt like oxide coating grease and dust can not be found between the back side of the specimen and the supporting anvil Choose the proper anvil proper testing surface and the bearing surface to ensure that the specimen is firmly supported without sliding or deformation when the test force is applied 7 3 Impact Effect of Hammer Impact Tester The specimen may move under the test force when the hammer impact tester is being used which will affect the testing result When testing with the hammer impact hardness tester loading and unloading of the test force is finished in an instant and the dwell time of the greatest test force does not reach the set time of the ordinary Brinell hardness testing This will affect the testing result As above mentioned the operator should
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