Indlela Okuqukethwe Kwe-Rebar Okuthinta Ngayo Ukusebenza Kwe-Diamond Core Bit

Ukuncipha kwesilinganiso sokungena: Izimbangela zemishini kanye nobukhulu bangempela (4050% ukwehla)

Xa izixhumanisi zediamond zihlaziywa kwegcine ebusweni kwekonkreti, iqiniso labasebenzi libuyisela. Ukwahlukana kwekonkreti esandla kwegcine eqhuthazelekile kubangela iingxaki ngoba ukuxhanyulwa ngqo kuthatha into ebizwa ngezibalo njengebond matrix fatigue. Okokuthi, izixhumanisi ezincinci ze-metal eziphila kuzo izinto ezaneleyo ze-diamond ziqala ukugqithwa emanzini. Ngoko ke, izixhumanisi ziphazamiswa ngakumbi, izindikimba ziphuphuka ngaphambili kakhulu, nezinye izinto zokuthinta ziphazamiswa ngokushesha kunokufanele. Iindleko eziphambene nezinkinga zenza ukuba izixhumanisi zixhomeke kwi-rebar ngama-17 ngexesha elinye, okwenzekayo ngexesha. Uvavanyo lwesiGaba lusinika isiqiniseko sokuba i-penetration rates zilahleka phantsi kude kuma-40 kuya kuma-50 ngesikhathi ekusebenzela kumthombo ongcinezayo kangaka kunye konkreti engcono. Le ngxelo ibonakala yonke indawo yesiqiniseko sesigaba, kuxanduva ne-ISO standards neemboniso zezigaba zokujikeleza ezavela ngo-2021.

Ukubeka isimo sokulanda ngokushesha njengendlela ebalulekile yokuthuthukisa umdwebo wokudrila izilawuli

Izinhlelo zokubeka isimo kwegolide ezinziwa yizisense zikwazi ukubona xa kuzovalwa izilawuli ngaphansi kwehafu sekuphumula, kulungiselela amabhizinisi ukuthetha ngokushesha noma ngendlela ethinta noma ngokuzenzakalelayo. Xa lokhu kuhlala, ukunciphisa indlela yekhondla phambi kwemithandaba engu-30 futhi ukulungisa ubungakanani bekholide kusiza ekukhuliseni ukuthi izigaba singabhekane, ngelinye ilango lefriction ibe nemilingo. Ukwenza ukuhlaziywa okunjalo kusikhathi esishesha kukhuphuka ukugcinwa kweqhotyiswa nokulahlekelwa, lokhu kusho ukuthi izinkomba zokudrila zibaluleka kabibili ngemva kweziseko elihlukile ngaphandle kokukhathazeka ngobuchwepheshe bempilo noma ubumnandi bomlando.

Amamekhanismi Okulahlekelwa Akuvela KwiSilawuli Nokuthuthukisa Ubude Bokuphila KwamaBit

Ukuxhumana kwegolide eqashwayo nokushishimela kwesikhwama sangaphakathi xa kuguqulwa kuconcrete kuya kwi-rebar

Xa kufikwa emnyango wokudonsa kwe-rebars, kukhona izindlela ezimbili eziphambili ezenza umsebenzi. Okokuqala, xa isithayi sibuyele indawo ekhanyayo ngeconcrete, kwenza amaphakathi amancane kumongo wokudluliswa ngokuthintana. Okwesibili, sibona ukulahlekelwa kwesimilo ngoba concrete nesithayi kudlula isimilo ngendlela eyodwa, kubangela izikhathi ezihlanu zokunyuka nokungena. Imimodeli yokuhlola engasetyenziselwa i-ANSYS Mechanical version 23.2 ibonise ukuthi le miphumela ephindelene ihlulela ubude bezinkalo ze-drill bit phakathi kwe-40 kuya kuma-60 iphesenti kunakuqalekanga ukugaya i-concrete engenamandla. Kanti kuqwalaselwa ukuthi ukubuyisa izixhobo ngendlela engafundiswa ikhokelela kwi-$740,000 ngokomlando wePonemon Institute otholakeleyo ngozhi lwelinye, ukulawula lo myalelo wokudonsa akusekhona kuphela ngokuphila komsebenzi njengalokho. Kuyinxalenye enkulu yezimali kuzo zonke izikhangeli. Indlela efanelekileyo etholakele imiphumo ebalulekileyo ezenziwa kwindawo yempilwenyama kuyokuba kunciphise inkathi yesimo uma imigcibelo ivikeleka ukuthi kukhona i-rebar. Lokhu kunceda ukulawula le myalelo enkulu kwindawo yokudibanisa phakathi kwemigqa, nakuba imiphumo ingahlukahluka ngokwesimo sezindawo nezixhobo zokulungisa.

Ukukhetha okukhazimulayo kokubamba: Ukulungana kwekugcina nokuphucuka ngokuzenzekalela kwegolide ephathelene negolide ephathelene negolide

Ubunzima bekhekwane lokubamba libaluleka kakhulu ekuvikelweni kwediamonds futhi kube yililo lekukhanya lapho kusebenza kunezinye izinhlangothi zezinto. Ibonde ezikhazimulayo, ephakathi kwe-15 kuya ku-20 iphasenthi ye-cobalt, zidinga ukudlala izindlela zediamond ngokuhle kodwa kungenzeka ingavikeli amandla okuchithwa okuvamile. Lokhu kuyisiphetho esikhulu sokuba kukhona intonga enkulu yokwanda kusuku lweseko. Ngokushesha, i-bond ezingezansi enegama elingu-5 kuya ku-10 iphasenti ye-cobalt zibangela ukuphucuka ngokuzenzekalela kodwa azikho amandla aphezu noma aphinde aphinde aphinde kuma-rebar asezinhlangatsini. Uma kusebenziswa nezinkimbili ezinezinkinga eziningi (ngaphezulu kwe-3% ngumjikelezo), izimo ezamanje ezinemboni ezifana no-12% we-cobalt zihlala zisebenza kahle kakhulu abasebenzi abafuna ukulungana kwezimali kanye nesilinganiso.

Izithempelo zezifungo ezihlanu ezikhulu zavala ukuthi izinkuni zokudluliswa phakathi zizange ziboneke kakhulu ngaphandle kokuba ziqine isimo sokudlula—kuvikela indima yazo njengomnikelo ohlelekileyo kumgugu onikezwe amagugu. 25%ngemidali enegugu eziningi ngelishwa kuye ukudluliswa okuhle kanye nokugcina isilinganiso esifanayo sokudlula—kuvikela indima yazo njengomnikelo ohlelekileyo kumgugu onikezwe amagugu.

Ukulungiswa kwe-RPM nezilinganiso zenhla zokunika inkuni kumthethoselo wokudluliswa kumagugu

Iindlela zokunika inkuni ngokuphindaphindi kanye nokulawula isivinini esinguqulo ukuze kuthintelwe ukubamba kanye nokwanda kwamandla

Ukusebenzisa ukunika isinyathelo esinye ngendlela yokuthinta ibhiti phambili kanye kunikwa izinkinga zokudluliswa kabusha nge-40%. Uma sikhulisa ibhiti ngemizuzwana emincane, kusinika inqubela ivuleke phakathi kwizinyathelo, okusiza ekukhuliseni izinkinga ezobubiwe ngokuguquka kwesithakazelo. Isici sokuguquguquka kwe-RPM sisebenza ngokuhlanganisa nale ndlela. Uma igunya likhetha ubude bezinja, linembala yokucofa umsindo nge-25%, lokhu kususa ukuhlukunyama komekhani yokucofa kodwa kancane kakhulu. Uma kuqhathaniswa lezi zindlela, abasebenzisi abaningi bathi amabhiti akhiwa kude nge-30%. Izivivinyo ezingaphandle zibanza lokhu, nokho kukhona abantu ababuyisela ngokuthi izinombolo zingahluke ngokulingana nokuthi izixhobo zihleli njani ngokwamava avela kwi-ACI 318-19.

Kulungile, kumele izikwerethi zivike ekukhetheleni ngaphezulu: ukusabela kakhulu kuthinta izigaba, ngelokho kuba khona ukupheleka okuphezulu kuthuthukisa ukugcina kwesithuthi sezibindi. Idatha yesifazane ibonisa ukuthi ukulungisa iziparamatha kakhulu kuthuthukisa izindlela zokungena ngaphakathi 15%emakhanda aphakathi kwe-rebar—ngokungqamene ngqamane nokuthula okuphezulu kuka-40–50%.

Ukukhetha Kwezinhlelo Yenkululeko Yenkululeko Yenkululeko Yenkululeko Yenkululeko

Ukuthi inkululeko iphinde, igeometry yebhit, nesimo sekhiye sokuthola isitya kumzimba wokuthuthukisa

Xa uhla ukhetha inqanawa yomshini wokugaya, izici ezibaluleke kakhulu kungukuba kunezinkinga zikreba ngakanani nokuthi isakhiwo sibonakala njani. Izindawo ezenziwa ngamathambo aphezulu (aningi kunoma 3% ngomjani) kudinga amashini angenza amandla angama-2.5 akhilethowathi enezinto eziphatha ubude bokugaya ukuze kube yidingekile xa kugaya kwihambo eliningi lamathambo. Laba mabhubhisi abadala bayadinga futhi. Kufanele babe nenhlobo ethile yesimo sobude obunamadili angama-40 ngosayizi olulodwa nobuchwepheshe obuningi phakathi kwabo. Izivivinyo zasekhalenda ku-UL 2200-2022 zibonisa ukuthi le mabhubhisi ethintekayo ihlala ingaphezu kwesikhathi esingama-35% xa ishintsha ekugayeni kubetele kuya ekrubini khona kumabhubhisi alula. Ukubalwa kwamathambo kuyadingeka futhi. Amathuluzi atholakala ngemithuluko yokumiswa okanye teknoloji ye-ultrasonic ayethola amathambo ngaphakathi kwe-milimita engu-5, lokhu kuvumela abasebenzisi ukulungiselela apho behlala beyigaya ukuze singakhiphe amathambo. Ezinkatini ezingenazo izinhloko ezizenzakala noma i-core ezinde ezikrabi, ukudibanisa izindlela zokubalwa nezindlela zokunika amandla azisetelwa kwenza kube yimpossible ukuphila phakathi kwizihlalo ngaphandle kokuhlukanisa imbhubhisi yokuqeda noma ukulahlekelwa kwebumba. Ukuhlanganisa le zinto zonke kususa izophumo ezingavunyelwanga futhi kuyathembela emasango aqondene nge-OSHA 1926.702 malunga nokusebenza nabestroktara abadala bethinta kruba.

Ukulimala, Ukusabela, nezinyathelo Zokulima Okufanele Kukwaziwa Ngokugcina I-Strategy YokuDonsa Rebar

Ukuphatha ukushisa nokudla ingcingo kakhulu xa kudonselwa phakathi kwerebar. Lokho kusebenza ngamanzi ukulimala ukuthi akwazi ukuqinisekisa ukuthi akwazi ukufika kwi-450 degrees apho isidingo sokubopha sibala. Lokhu kunciphisa amaphethini okushisa owuthakatha okuthakatha xa kuhamba phakathi kwe-concrete nezililo. Ukusabela ngosizo lwesixwayiso sekuphela kakhulu, ikakhulukazi xa kudibaniswa ngezindlela ezinhle ezenziwe zikhabhini lokudonsa. Lezi zindlela zisabela izinto ezincane zamahhashi ngaphambi kokuthi zizange zidame isahluko sokudonsa futhi, kodwa yindima ephathelene nokwandisa ukugcinwa kwezixhobo. Ngokwesiqiniseko esishicilelwe ku-Cement & Concrete Research ngo-2023, ukungabi nalokulimala kungaba yindlela yokuba izixhobo zingcine kangcono kabusha ngama-40% kuya kuma-60% emaphandleni anobunkunzi bomgca wamahhashi.

Ukuphila kwizixhobo kumele kube yinto ethuthelwayo, engalindeke ukuthathe inkinga ekhona:

• Ukukhokha kwezilinga yokuphakama emva kwejobe ngayinye kubonisa ukucindezeka okungalingani kabefore kuphela kwesiphetho esihlukile.
• Ukuvula kwechango ekususweni kunezikhathi ezimbili zonke kugcina >95% wokwenza umoya—okubalulekile ekususweni kwezindleko.
• Ukulungiswa kwe-torque ngowezenkulu kudala izimo ephakeme ngezinguquko ku 45%, ngokwemfundo yezifondo eziyi-12 ezibekelwa khona.

Kumasebe aphathelwe nguamanzi, izinhlelo zomoya nezimali zinikeza ukulawula kwebumba ngaphandle kokulahlela ubume bomfanekiso—okwakhiwe phansi kweqiniso le-Arthur B7.1. Ngokuhlanganisa, lezi zinhlelo zihlinza ukufinyelela okuphakade, ubude bokuphila kobude obubhekene nobude bokusebenza, nokuncipha okubalwayo kizindleko zonke zokubamba.

Imibuzo Evame Ukubuzwa

Kani rebar ikhusela imisebenzi yabhamu abadada?

I-rebar ikhusela imisebenzi yabhamu abadada ngokuthi ichaza inhlaka yebond xa abhamu bathola isitekilu sokunxuswa, okubangela ukucindezeka kakhulu nokuncipha kokuqhubeka komgwa.

Kani ukubamba kwe-load ngokushesha kungahlela ukudlulisela kwe-rebar?

Ukumonitora kwezilingo ngokwesikhathi esifanayo kungethelela ekugcineni i-rebar ngokuthola ngokushesha ukuthi rebar ikhona, kube lula ukulungisa ukuqukatha kwegazi nezimali zokucindezela, okususa ukugayaya kwamabhiti.

Iziphi izimo ezilungile zokubamba ukuqukatha xa kugcina e-concrete enobunkunzi be-rebar?

Ibanga eliphakade lokubamba nge-12% yomlando we-cobalt litholakala njengelungile xa kugcina e-concrete enobunkunzi be-rebar, libalase indawo yediamond ngezici zokulungisa ngokujwayelekile.

Ukusiza kani ukusebenzisa izindlela zokunyusa ukunyakaza kanye ne-RPM ezingavaryeki kugcina rebar?

Izindlela zokunyusa ukunyakaza kanye ne-RPM ezingavaryeki zikhubaza ukuthintwa kanye nokugayaya ngokuphatha ukuqukatha kanye nesivinini sokugcina, okusinika amabhiti angaphila ngeminyaka engaphezu.

Iziphi izindlela zokucindezela ezifanelekile xa kugcina ngaphakathi kwe-rebar?

Izindlela ezifanelekile zokucindezela kufana nokusebenzisa amanzi noma izinkomba zehlathi ukuze kuthintwe ukugayaya kanye nokugayaya okusheshayo, kubekwa ubude bendawo ngesilingo phansi kwezinkinga zezimo zokuphazanyiswa kwamabhodi.