Ikhowudi yobunzima besinyithi i-H. Ngokweendlela ezahlukeneyo zokuvavanya ubunzima, ezo zimvo zibalulekileyo zibandakanya i-brinell (HB), i-VRC), i-WRES (i-HRC), i-HRC isetyenziswa rhoqo. I-HB inoluhlu olubanzi lwezicelo, kwaye i-HRC ilungele izixhobo ezinobunzima obuphakamileyo, ezinje ngobushushu obushushu. Umahluko kukuba i-Inder yobunzima bobunzima bayohlukile. I-briness hard toster i-interter yebhola, ngelixa i-rockwell ubunzima bendawo yedayimane.
I-HV-ilungele uhlalutyo lwe-microscope. I-Wickers Hard (HV) icinezela umphezulu wezinto ezinomthwalo ongaphantsi kwe-120kg kunye ne-neiere yedayimane ye-diner cone nge-vertex engle ye-136 °. Indawo yomphezulu we-gorintation yezinto ezibonakalayo zahluleke lixabiso lomthwalo, ezingabalulekanga kangako (HV). I-Winders Card ichazwe njenge-HV (Jonga kwi-GB / T4340-1999), kwaye ilinganisa iisampulu ezinqabileyo kakhulu.
I-HL ephathekayo yobuqili iyahambelana nommiselo. Isebenzisa iNtlalo yeNtloko iNtloko yefuthe kwifuthe lelukhuni kwaye ivelise i-bounce. Ubunzima bubalwa ngomyinge wesantya sokuphinda senziwe i-punch kwi-1mm ukusuka kwi-1mm kwi-paund ukuya kwisantya sempembelelo. Ifomula ngu: i-leeb hards hl = 1000 × vb (isantya sokuqala) / VA (isantya sempembelelo).
I-tiness ephathekayo ye-leeb iguqulwe iguqulwe ibe yi-brinell (HB), iProckwell (HRC), iVickers (HV), i-HS (HL). Okanye sebenzisa umgaqo we-leeb ukulinganisa ngokuthe ngqo ixabiso elinzima nge-brinell (HB), iProckwell (HRC), iVickers (HV), i-LEEB (HL).
I-HB-ibrinell hards:
I-Brinell Hardy (HB) isetyenziswa ngokubanzi xa izinto zithambile, ezinjengeentsimbi ezingeyongozi, intsimbi ngaphambi konyango lobushushu okanye emva kokuthandwa. I-Rockwell Hardy (HRC) isetyenziselwa izixhobo ngokunzima kakhulu, njengolulukhuni emva konyango lobushushu, njl.
I-brinell hards (HB) ngumthwalo wovavanyo lwesayizi ethile. Ibhola yentsimbi eqingqiweyo okanye ibhola ye-carbide yedayimitha ethile icinezelwe kumgangatho wesinyithi ukuba ihlolwe. Umthwalo wovavanyo ugcinwa ixesha elithile, emva koko umthwalo ususiwe ukulinganisa ububanzi bomgangatho kumphezulu ozokuvavanywa. Ixabiso lobunzima beBrinell sisizathu esifunyanisiweyo esifunyanisiweyo ngokwahlulahlulwa komthwalo kwindawo yendawo ye-schection. Ngokubanzi, ibhola eqinileyo yentsimbi yesayizi ethile (ihlala i-10mm ububanzi) icinezelwe kwindawo yemibambo ngomthwalo othile (ihlala i-3000kg) kwaye igcinwe ixesha elithile. Emva kokuba umthwalo ususiwe, umyinge womthwalo kwindawo yendawo ye-indent yixabiso le-brineld hard
I-Rockwell Hardy ichaza ixabiso le-hards sobs I-0.002 mm isetyenziswa njengeyunithi yobunzima. Xa i-HB> 450 okanye isampulu incinci kakhulu, uvavanyo lobunzima be-brinell alunakusetyenziswa kwaye umlinganiso we-rockwell usetyenziswa endaweni yoko. Isebenzisa i-quamond cone ene-vertex ye-vertex ye-120 ° okanye ibhola yentsimbi ene-Biameter ye-1.59 okanye i-3.1mm ukucinezela kumthwalo othile phantsi komthwalo othile ophantsi komthwalo othile, kwaye ubunzima bezinto ezinobunzulu bobunzulu bendlela. Ngokukalukhuni lwezinto zovavanyo, ibonakaliswa kwizikali ezintathu ezahlukeneyo:
I-HRA: Bubunzima obufunyenwe ngokusebenzisa umthwalo wama-60kg kunye ne-Intene yeDayimane, esetyenziselwa izixhobo ezinzima kakhulu (ezinjengokukhuma kwengqondo, njl. Njl.).
I-HRB: Bubunzima obufunyenwe ngokusebenzisa umthwalo we-100kg kunye nebhola yentsimbi enobunzima be-1.58mm, esetyenziselwa izixhobo eziphantsi (njengentsimbi enesitayile, njl njl.).
I-HRC: Bubunzima obufunyenwe ngokusebenzisa umthwalo we-150KG kunye ne-Intenu ye-Dinery Cone, esetyenziselwa izixhobo ezinzima kakhulu (ezinje ngentsimbi enzima, njl. Njl.).
Ukwengeza:
I-1.HRC ithetha i-robwell hards c yesikali.
2.HRC kunye ne-HB isetyenziswa ngokubanzi kwimveliso.
I-3.HRC ye-HRC ye-HRC 20-67, ilingana ne-HB225-650,
Ukuba ubunzima bungaphezulu kolu luhlu, sebenzisa ubunzima be-robwell i-HRA,
Ukuba ubunzima bungaphantsi kunoluhlu, sebenzisa ubunzima be-robwell b hrb,
Umda ophezulu we-brinell ubunzima yi-HB650, engenakuphepha elixabiso.
4.I-Intenter ye-rockwell hardtrance c steter c yingqokelela yedayimani nge-vertex engle yeedigri ze-vertex. Umthwalo wovavanyo lixabiso elithile. Umgangatho waseTshayina une-150 kgf. I-Inknter ye-Brinell Hester titer ibhola yentsimbi yentsimbi (i-HBS) okanye ibhola ye-carbide (HBW). Umthwalo wovavanyo uyahluka ngokudaba kwebhola, ukusukela ukusuka kwi-3000 ukuya kwi-31.25 kgf.
5.Ulukhuni lwe-rockwell luncinci kakhulu, kwaye ixabiso elilinganisiweyo likhethiweyo. Kuyimfuneko ukulinganisa amanqaku amaninzi ukufumana ixabiso eliphakathi. Ilungele iimveliso ezigqityiweyo kunye nezilayiri ezinqabileyo kwaye zihlelwa njengovavanyo olungelulo utshabalalisi. I-Briness Erction inkulu, ixabiso elilinganayo lichanekile, ayifanelekanga kwiimveliso ezigqityiweyo kunye nezilayiri ezinqabileyo, kwaye ngokubanzi azichazwanga njengovavanyo olungelulo uqhekekayo.
I-6. Ixabiso lobunzima be-rockwell ubunzima beli ligama elingachazwanga ngaphandle kweyunithi. .
I-7. Ubunzima be-Rockwell buboniswa ngokuthe ngqo kwi-Deal okanye iboniswe ngedijithane. Kulula ukusebenza, ngokukhawuleza kwaye kunomdla, kwaye kufanelekile ukuveliswa kwesininzi. I-brinell ubunzima ifuna i-microscope ukulinganisa ububanzi be-induction, kwaye emva koko jonga itafile okanye ukubala, okukhona kakhulu ukuze asebenze.
8. Phantsi kwemeko ezithile, i-HB kunye ne-HRC inokutshintshwa ngokujonga itafile. Ifomula yokubala yengqondo inokuba irekhodwe njenge: 1hrc≈1 / 10hb.
Uvavanyo lobunzima luyindlela elula nelula yovavanyo kuvavanyo lwepropathi yoomatshini. Ukuze usebenzise uvavanyo lwelukhuni ukutshintsha uvavanyo oluthile lwepropathi, ngakumbi ubudlelwane obuchanekileyo bokuguqula phakathi kobunzima namandlakala obufunekayo kwimveliso.
Ukuziqhelanisa kubonakalise ukuba kukho ubudlelwane obuhambelanayo obuhambelana phakathi kweenqobo zokunqongophala kwezinto zensimbi kwaye phakathi kwexabiso lobunzima kunye nexabiso lamandla. Ngenxa yokuba ixabiso elinzima limiselwa sisishwankathelo sokuqala seplastiki kunye nokunganyangeki kweSpecial Plations yePlasikisi, amandla aphezulu okuphantsi, okuphezulu kweplastiki yokunganyangeki kweplastiki, kunye nokuphakathi kwexabiso eliphezulu.
IXESHA LOKUQALA: AUG-16 ukuya ku-2024
