Yakajairwa Kuoma Kuenzanisa Tafura |Yakanyanya Yakakwana Kuunganidzwa

HV, HB, uye HRC ese zviyero zvekuomarara zvinoshandiswa mukuyedzwa kwezvinhu.Ngativaparadze:

1)HV Kuoma (Vickers Hardness): HV kuomarara chiyero chekuramba kwechinhu kune indentation.Inotaridzirwa nekuisa mutoro unozivikanwa pamusoro pezvinhu uchishandisa indenter yedhaimondi uye kuyera saizi yeinoguma indentation.HV kuomarara inoratidzwa muzvikamu zveVickers kuomarara (HV) uye inowanzoshandiswa kuzvinhu zvitete, machira, uye zvikamu zvidiki.

2)HB Kuoma (Brinell Hardness): HB kuoma chimwe chiyero chekuramba kwechinhu kune indentation.Inosanganisira kuisa mutoro unozivikanwa kune zvinyorwa uchishandisa indenter yesimbi yakaomeswa uye kuyera dhayamita yeinoguma indentation.HB kuomarara inoratidzwa mumayuniti eBrinell kuomarara (HB) uye inowanzo shandiswa pazvinhu zvakakura uye zvakakura, zvinosanganisira simbi nemaaloyi.

3)HRC Kuoma (Rockwell Hardness): HRC kuoma chiyero chekuramba kwechinhu kupinza kana kupinda.Inoshandisa zviyero zvakasiyana (A, B, C, nezvimwewo) zvichibva pane chaiyo nzira yekuyedza uye nemhando yeindenter inoshandiswa (dhaimani koni kana simbi yakaoma bhora).Chikero cheHRC chinowanzo shandiswa kuyera kuoma kwezvinhu zvesimbi.Iko kukosha kwekuoma kunomiririrwa senhamba pachiyero cheHRC, senge HRC 50.

 

Inowanzo shandiswa HV-HB-HRC kuomarara tafura yekuenzanisa:

Yakajairwa ferrous simbi kuomarara tafura yekuenzanisa (inenge simba shanduko)
Hukukutu classification

Kusimba simba

N/mm2

Rockwell Vickers Brinell
HRC HRA HV HB
17 - 211 211 710
17.5 - 214 214 715
18 - 216 216 725
18.5 - 218 218 730
19 - 221 220 735
19.5 - 223 222 745
20 - 226 225 750
20.5 - 229 227 760
21 - 231 229 765
21.5 - 234 232 775
22 - 237 234 785
22.5 - 240 237 790
23 - 243 240 800
23.5 - 246 242 810
24 - 249 245 820
24.5 - 252 248 830
25 - 255 251 835
25.5 - 258 254 850
26 - 261 257 860
26.5 - 264 260 870
27 - 268 263 880
27.5 - 271 266 890
28 - 274 269 900
28.5 - 278 273 910
29 - 281 276 920
29.5 - 285 280 935
30 - 289 283 950
30.5 - 292 287 960
31 - 296 291 970
31.5 - 300 294 980
32 - 304 298 995
32.5 - 308 302 1010
33 - 312 306 1020
33.5 - 316 310 1035
34 - 320 314 1050
34.5 - 324 318 1065
35 - 329 323 1080
35.5 - 333 327 1095
36 - 338 332 1110
36.5 - 342 336 1125
37 - 347 341 1140
37.5 - 352 345 1160
38 - 357 350 1175
38.5 - 362 355 1190
39 70 367 360 1210
39.5 70.3 372 365 1225
40 70.8 382 375 1260
40.5 70.5 377 370 1245
41 71.1 388 380 1280
41.5 71.3 393 385 1300
42 71.6 399 391 1320
42.5 71.8 405 396 1340
43 72.1 411 401 1360
43.5 72.4 417 407 1385
44 72.6 423 413 1405
44.5 72.9 429 418 1430
45 73.2 436 424 1450
45.5 73.4 443 430 1475
46 73.7 449 436 1500
46.5 73.9 456 442 1525
47 74.2 463 449 1550
47.5 74.5 470 455 1575
48 74.7 478 461 1605
48.5 75 485 468 1630
49 75.3 493 474 1660
49.5 75.5 501 481 1690
50 75.8 509 488 1720
50.5 76.1 517 494 1750
51 76.3 525 501 1780
51.5 76.6 534 - 1815
52 76.9 543 - 1850
52.5 77.1 551 - 1885
53 77.4 561 - 1920
53.5 77.7 570 - 1955
54 77.9 579 - 1995
54.5 78.2 589 - 2035
55 78.5 599 - 2075
55.5 78.7 609 - 2115
56 79 620 - 2160
56.5 79.3 631 - 2205
57 79.5 642 - 2250
57.5 79.8 653 - 2295
58 80.1 664 - 2345
58.5 80.3 676 - 2395
59 80.6 688 - 2450
59.5 80.9 700 - 2500
60 81.2 713 - 2555
60.5 81.4 726 - -
61 81.7 739 - -
61.5 82 752 - -
62 82.2 766 - -
62.5 82.5 780 - -
63 82.8 795 - -
63.5 83.1 810 - -
64 83.3 825 - -
64.5 83.6 840 - -
65 83.9 856 - -
65.5 84.1 872 - -
66 84.4 889 - -
66.5 84.7 906 - -
67 85 923 - -
67.5 85.2 941 - -
68 85.5 959 - -
68.5 85.8 978 - -
69 86.1 997 - -
69.5 86.3 1017 - -
70 86.6 1037 - -

HRC/HB Mazano Anoda Kushandurwa

Kuoma kwacho kwakakwira kupfuura 20HRC, 1HRC≈10HB,
Hukukutu hwakaderera pane 20HRC, 1HRC≈11.5HB.
Mazano: Pakucheka kugadzirwa, inogona kunyatso kushandurwa zvakafanana 1HRC≈10HB (kuoma kwechigadzirwa chebasa chine shanduko yekuchinja)

 

Kuoma kwezvinhu zvesimbi

Kuomarara zvinoreva kugona kwechinhu kuramba deformation yenzvimbo, kunyanya deformation yepurasitiki, indentation kana kukwenya.Indekisi yekuyera kupfava nekuoma kwezvinhu.

Zvinoenderana neakasiyana maitiro ekuyedza, kuomarara kwakakamurwa kuva marudzi matatu.
Scratch kuoma.Inonyanya kushandiswa kuenzanisa kupfava uye kuoma kwemaminerari akasiyana.Nzira yacho ndeyekusarudza tsvimbo ine mugumo wakaoma uye imwe mugumo yakapfava, kupfuudza zvinhu kuti zviedzwe pamwe chete netsvimbo, uye kuona kuoma kwezvinhu kuti zviedzwe maererano nechinzvimbo chekukwenya.Mukutaura kwehunhu, zvinhu zvakaoma zvinogadzira makwara marefu uye zvinhu zvakapfava zvinogadzira zvikwambo zvipfupi.

Indentation kuoma.Inonyanya kushandiswa kumidziyo yesimbi, iyo nzira ndeye kushandisa imwe mutoro kudzvanya iyo yakatsanangurwa indenter muzvinhu kuti zviedzwe, uye enzanisa kupfava uye kuoma kwezvinhu kuti zviedzwe nehukuru hwenzvimbo yepurasitiki deformation pamusoro zvinhu.Nekuda kwekusiyana kweindenter, kuremerwa uye kuremerwa kwenguva, kune akawanda marudzi ekuomarara kwemukati, kunyanya kusanganisira Brinell kuomarara, Rockwell kuomarara, Vickers kuomarara uye microhardness.

Rebound kuoma.Inonyanya kushandiswa kumidziyo yesimbi, iyo nzira ndeyekugadzira nyundo diki diki inodonha yakasununguka kubva kune imwe nzvimbo kureba kuti ibate sampu yechinhu chinofanirwa kuongororwa, uye kushandisa huwandu hwesimba rekumanikidza rakachengetwa (uye rozoburitswa) mumuenzaniso panguva kukanganisa (kuburikidza nekudzoka kwesando diki) svetuka urefu hwechiyero) kuona kuoma kwechinhu.

Iyo yakajairika Brinell kuomarara, Rockwell kuomarara uye Vickers kuomarara kwesimbi zvinhu ndezvekuomarara kwemukati.Iko kuomarara kukosha kunoratidza kugona kwechinhu chepamusoro kurwisa deformation yepurasitiki inokonzerwa nechimwe chinhu chiri kudzvanywa mukati;C) kuyera kuomarara, uye kukosha kwekuomarara kunomiririra saizi yeiyo elastic deformation basa resimbi.

Brinell Hardness

Shandisa bhora resimbi rakadzimwa kana bhora rakaomarara rine dhayamita yeD se indenter, dzvanya mukati mechikamu chebvunzo neiyo inowirirana test force F, uye mushure menguva yakatarwa yekubata, bvisa simba rekuyedza kuti uwane indentation ne. dhayamita yed.Gurai simba rekuedza nepamusoro penzvimbo ye indentation, uye kukosha kunoguma ndiko kukosha kwekuoma kweBrinell, uye chiratidzo chinomiririrwa neHBS kana HBW.

新闻用图3

Musiyano uripo pakati peHBS neHBW ndiwo mutsauko mune indenter.HBS inoreva kuti indenter ibhora resimbi rakaomarara, rinoshandiswa kuyera zvinhu zvine Brinell kuomarara ukoshi pasi pe450, sesimbi yakapfava, grey cast iron uye non-ferrous metals.HBW zvinoreva kuti indenter is cemented carbide, iyo inoshandiswa kuyera zvinhu neBrinell hardness value iri pasi pe650.

Kune imwechete test block, kana mamwe mamiriro ebvunzo akanyatsofanana, mhedzisiro yebvunzo mbiri dzakasiyana, uye kukosha kweHBW kunowanzo hukuru kupfuura kukosha kweHBS, uye hapana mutemo wehuwandu wekutevera.

Mushure megore ra2003, nyika yangu yakatora zvakangofanana zviyero zvepasi rose, yakadzima simbi bhora indenters, uye ese akashandiswa carbide bhora misoro.Naizvozvo, HBS inomiswa, uye HBW inoshandiswa kumiririra chiratidzo chekuoma kweBrinell.Kazhinji, kuomarara kweBrinell kunongoratidzwa muHB, zvichireva HBW.Nekudaro, HBS ichiri kuonekwa nguva nenguva mumapepa emabhuku.

Iyo Brinell kuomarara nzira yekuyera yakanakira simbi yakakandwa, isina-ferrous alloys, akasiyana annealed uye kudzimwa uye kudziya simbi, uye haina kukodzera kuyedza samples kana.cnc kushandura zvikamuidzo dzakanyanya kuomarara, diki, dzakatetepa, kana dzisingatenderi mapindiro makuru pamusoro.

Rockwell Hardness

Shandisa koni yedhaimondi ine koni ye120 ° kana Ø1.588mm uye Ø3.176mm yakadzima mabhora esimbi se indenter uye mutoro kushandira pamwe nayo.Mutoro wekutanga ndeye 10kgf uye mutoro wose i60, 100 kana 150kgf (kureva, mutoro wekutanga pamwe nemutoro mukuru).Kuomarara kunoratidzwa nemusiyano pakati pekudzika kwemukati kana mutoro mukuru uchibviswa uye kudzika kwemukati kana mutoro mukuru uchichengetwa uye kudzika kwemukati pasi pemutoro wekutanga mushure mekunge mutoro wese waiswa.

新闻用图1

 

   Iyo Rockwell kuomarara bvunzo inoshandisa matatu bvunzo masimba uye matatu indenters.Kune 9 musanganiswa wavo, unoenderana ne9 zviyero zveRockwell kuoma.Kushandiswa kweaya vatongi 9 kunovhara zvinenge zvese zvinowanzo shandiswa simbi zvinhu.Kune matatu anowanzo shandiswa HRA, HRB uye HRC, pakati peiyo HRC ndiyo inonyanya kushandiswa.

Inowanzo shandiswa Rockwell kuomarara bvunzo yakatarwa tafura:

Kuoma
chiratidzo

Musoro mhando
Total test force
F/N (kgf)

Kuoma
scope

Mienzaniso yekushandisa
HRA
120°
diamond koni
588.4(60)
20~88

Carbide, carbide,
Shallow case hardened steel etc.

HRB
Ø1.588mm
Bhora resimbi rakadzimwa
980.7(100)
20~100

Annealed, normalized simbi, aluminium alloy
Ndarama, alloy yemhangura, simbi yakaumbwa

HRC
120°
diamond koni
1471(150)
20~70

simbi yakaoma, yakadzimwa uye yakanyoroveswa, yakadzika
layer case simbi yakaoma

 

   Kuwanda kwekushandiswa kwechiyero cheHRC ndeye 20 ~ 70HRC.Kana kukosha kwekuoma kuri pasi pe20HRC, nekuti iyo conicalaluminium cnc machining chikamuyeindenter inodzvanywa zvakanyanya, kunzwa kunodzikira, uye chiyero cheHRB chinofanira kushandiswa pachinzvimbo;apo kuoma kwemuenzaniso kwakakura kudarika 67HRC, kumanikidzwa pamuromo we indenter yakakura zvikuru, uye dhaimondi rinokuvara nyore.Hupenyu hweindenter huchapfupikiswa zvakanyanya, saka chiyero cheHRA chinofanirwa kushandiswa pachinzvimbo.

Iyo Rockwell kuomarara bvunzo iri nyore, inokurumidza, uye diki indentation, uye inogona kuyedza pamusoro pezvigadzirwa zvakapedzwa uye dzakaoma uye dzakatetepa workpieces.Nekuda kwediki indentation, kune zvigadzirwa zvine chimiro chisina kuenzana uye kuoma, kukosha kwekuoma kunochinja zvakanyanya, uye iko kurongeka hakuna kukwirira seBrinell kuomarara.Rockwell kuomarara kunoshandiswa kuona kuoma kwesimbi, asiri-ferrous simbi, hard alloys, nezvimwe.

Vickers Hardness Vickers Hardness
Nheyo yeVickers kuomarara kuyerwa kwakafanana neiyo yeBrinell kuomarara.Shandisa dhaimondi sikweya piramidhi indenter ine kona inosanganisirwa ye136 ° kudzvanya pamusoro pechinhu neyakatsanangurwa bvunzo simba F, uye bvisa simba rekuyedza mushure mekuchengetedza nguva yakatarwa.Kuomarara kunoratidzwa neavhareji yekumanikidza pane yeyuniti nzvimbo yeskweya piramidi indentation.Kukosha, chiratidzo chechiratidzo iHV.

新闻用图2

   Iyo Vickers kuomarara kuyerwa kwakakura, uye inogona kuyera zvinhu nekuomarara kubva pa10 kusvika 1000HV.Iyo indentation idiki, uye inowanzo shandiswa kuyera zvinhu zvakatetepa uye pamusoro akaomeswa akaturikidzana senge carburizing uye nitriding.

Leeb Kuoma Leeb Kuoma
Shandisa muviri unokanganisa uine humwe huremu hwetungsten carbide bhora musoro kubata pamusoro peyeyedzo chidimbu pasi pechiito cheimwe simba, wobva wadzokorodza.Nekuda kwekuoma kwakasiyana kwezvinhu, iyo rebound kumhanya mushure mekuita kwakasiyanawo.Magineti echigarire akaiswa pane inokanganisa mudziyo.Kana iyo inokanganisa muviri inofamba ichikwira nekudzika, peripheral coil inopinza chiratidzo chemagetsi chinoenderana nekumhanya, uye wochishandura kuita kukosha kweLeeb kuburikidza nemagetsi edunhu.Chiratidzo chakanyorwa kuti HL.

Leeb hardness tester haidi worktable, uye kuoma kwayo sensor iduku sepeni, iyo inogona kushandiswa zvakananga nemaoko, uye inogona kuonekwa nyore nyore kana yakakura, inorema workpiece kana workpiece ine yakaoma geometric dimensions.

Imwe bhenefiti yeLeeb kuomarara ndeyokuti ine zvishoma kukuvadza pamusoro pechigadzirwa, uye dzimwe nguva inogona kushandiswa seyedzo isingaparadzi;yakasarudzika mukuomarara bvunzo munzvimbo dzese, nzvimbo dzakamanikana uye dzakakoshazvikamu zvealuminium.

 

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Nguva yekutumira: May-18-2023
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