I-alloy bushings ixazulula iingxaki zokunxiba kunye nokungahambi kakuhle-xa zenziwe ngokufanelekileyo. Siye sabona iindibano zempompo ye-hydraulic zisilela emva kweeyure zokusebenza ezingama-4,200 ngenxa yokuba i-bronze bushings eqhelekileyo ikhubazekile phantsi komthwalo we-cyclic radial. Sitshintshe imikhono yentsimbi eqhekekileyo kwishafti eseziko lewintshi yaselwandle ngokwesiko i-alloy bushing ukufakwa-kunye nobomi benkonzo eyandisiweyo nge-3.7 ×. Oku akuyothiyori. I-metallurgy eqinisekisiweyo yentsimi isetyenziswe kwijometri esebenzayo.
Kutheni iiBushs ezisemgangathweni zisilela phantsi komthwalo wemizi-mveliso
Uninzi lweentsilelo lubuyela emva kwiingqikelelo ezintathu ezingahambelaniyo: loo mthwalo umile, ubushushu buhlala buhleli, kwaye ukudibana komphezulu kuhlala kufana. Ngokwenyani, izindlu zesilinda zempompo yepiston zibona uxinzelelo olungaphezulu kwe-450 bar ngelixa ubushushu be-oyile buguquka ukusuka kwi-35 ° C ukuya kwi-110 ° C ngexesha lemijikelo yomsebenzi. Loo msantsa ukwanda thermal? Kulapho ulungelelwaniso luqala khona. Amatyholo obhedu athambe kufutshane ne-150°C. I-Steel-on-steel idibanisa inyongo ngaphandle kwee-coefficients zokhuhlane ezilawulwayo. Kwaye i-iron cast ayinakho ukuzinza kwe-microstructural efunekayo kwi-sub-0.015 mm yokunyamezela ukunyamezela kwiindibano ezijikelezayo ezijikelezayo.
Silandelele iintsilelo zentsimi ezingama-68 kuzo zonke iisistim zemoto yobunjineli behydraulic kwiinyanga ezili-18. I-73% ibandakanya amanqaku angaphambi kwexesha kwiijenali ze-shaft-azibangelwa kukungcoliseka, kodwa ngokunyuka kwehlathi phantsi koxinzelelo lwe-120 MPa yoqhagamshelwano. Oyena nobangela yayingengobumdaka. Yayiyimveliso yezinto eziphathekayo.
I-alloy Bushing Materials: Ukutshatisa iKhemistri kwiFunction
Ayizizo zonke i-alloy bushings ezisebenza ngokulinganayo. I-cobalt-nickel alloys efana ne-AMS 5387 ihambisa ubulukhuni obungaphezulu kwe-45 HRC kunye nokwandiswa kwe-thermal kufutshane ne-zero ngaphantsi kwe-500 ° C. I-T800 ye-cobalt-based based grade igcina amandla oxinzelelo ngaphezu kwe-1,100 MPa kwi-600 ° C-ibaluleke kakhulu kwi-nozzles yepompo ye-downhole evezwe kwigesi emuncu kunye nesanti e-abrasive. I-iron castings kunye ne-3.2% ye-chromium kunye ne-1.8% ye-molybdenum ixhathisa i-galling engcono kune-iron grey-kodwa kuphela xa ubushushu buphathwa kwi-28-32 HRC kunye nokugqiba umhlaba ukuya ku-Ra ≤0.4 μm.
Nantsi into esebenzayo-kwaye ngoba:
- I-Cobalt-nickel (AMS 5387): Okona kulungileyo kwimithwalo ejikelezayo >100 kN namaqondo obushushu >400°C. Igcina uzinzo lwe-dimensional ngaphakathi kwe-±0.002 mm ngaphezu kwemijikelo eyi-10,000.
- T800 ingxubevange yecobalt: Yeyona ilungele ujongano olungathanjiswanga okanye olufakwe kancinci. I-Coefficient of friction ihlala ngaphantsi kwe-0.28 nasemva kwe-500 yeeyure zomile zibaleka.
- Intsimbi yeChromium-molybdenum: Ixabiso eliphantsi kwiivalvu zoxinzelelo oluphakathi apho isantya somphezulu sihlala ngaphantsi kwe-1.2 m/s kwaye iqondo lobushushu le-ambient lihlala ngaphantsi kwe-120°C.
Usebenzisa i-cobalt alloy kwizindlu ezinomthwalo ophantsi wegearmotor? Ukugqithisa-kwaye kuyabiza. Ukusebenzisa intsimbi etyhidiweyo kwisiseko sempompo engaselunxwemeni? Ukuchitheka okuqinisekisiweyo kwiinyanga ezili-18. Ukukhetha izinto eziphathekayo akukho malunga nespekthi. Imalunga neemeko zemida.
Uyilo kunye nokuVeliswa: Apho ukuchaneka kube ngumsebenzi
I-alloy chemistry egqibeleleyo ayithethi nto ngaphandle kwejometri echanekileyo. Sisebenza ngomatshini we-cobalt alloy bushings kumaziko e-CNC e-5-axis ane-diamond-turned bores yangaphakathi-ukuphumelela ukujikeleza ≤0.003 mm kunye nokugqiba umphezulu uRa 0.2 μm. Kutheni ibalulekile nje loo nto? Ngenxa yokuba i-0.008 mm ngaphandle kwemeko yokwandisa uxinzelelo loqhagamshelwano lwendawo nge-47% kwindawo ephakamileyo. Kulapho i-microcracks i-nucleate.
Inkqubo yethu idibanisa ukuphosa kunye noomatshini ngabom. Kwizindlu zepiston pump cylinder, siphosa iqokobhe langaphandle kwi-ductile iron (ASTM A), emva koko ucinezele i-cobalt alloy liner eyenziwe ngoomatshini. Ungenelelo olufanelekileyo lucinezela i-liner radially-uyila ukulayisha kwangaphambili okwakhelwe ngaphakathi okubala uxinzelelo olusebenzayo. Akukho zincamathelisi. Akukho kucutheka kufanelekile. I-metallurgical synergy nje.
Yonke ibhetshi ifumana umkhondo opheleleyo: iicerts zezinto eziluhlaza, ii-jot-treat-treat logs, iingxelo ze-CMM nge-ASME Y14.5, kunye novavanyo lokugqibela olusebenzayo kuxinzelelo olulinganisiweyo kunye nesantya. Ukuba i-bushing ijikeleza kwi-1,800 rpm ngaphakathi kwe-winch centre shaft, siyayivavanya kwi-2,200 rpm kwimizuzu engama-30 ngaphambi kokuthunyelwa.
Kuza kuchazwa nini i-alloy Bushing-kwaye xa ungayi
Khetha i-alloy bushings xa nayiphi na kwezi isebenza:
- Ukuphambuka kwe-shaft kudlula i-0.025 mm phantsi komthwalo omkhulu
- Ubushushu bokusebenza buguquguquka ngaphezulu kwe-60°C kumjikelo oqhelekileyo womsebenzi
- Isantya sobuso sidlula i-1.5 m/s kunye nokuthambisa okuphakathi
- Inxalenye ifuna isiqinisekiso se-ASME B16.34 okanye i-API 6A
Musa ukuzikhankanya kwi-static, usetyenziso olunomthwalo ophantsi njengesixhobo sephaneli yepivots okanye iziphatho zevalvu ezenziwe ngesandla. Ncamathela apho ubhedu lwephosphor. Gcina ukusebenza kwe-alloy apho kubaluleke khona: iivalvu zoxinzelelo zihamba ngebhayisikile amaxesha angama-12 ngomzuzu, iziseko zempompo ezixhasa iitoni ezi-8 ezijikelezayo, okanye i-winch shafts ekude nonxweme enyamezela ukubola kwetyuwa-spray kunye nokulayishwa komothuko.
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. yakha la macandelo-hayi njengezinto zekhathalogu, kodwa njengojongano olubalulekileyo lwenkqubo. Siqinisekisa ii-callouts ze-GD&T ngaphambi kokusika isinyithi. Sifaka iflegi yee-engile zokuyila ezibamba umoya ngexesha lokuphosa. Sivavanya yonke into i-alloy bushing ngokuchasene nesixhobo sakho sokwenyani-hayi intsimbi yegeneric.
Ukunxiba kunye nokungahambi kakuhle akunakuphepheka. Ziyimpawu zemathiriyeli engahambelaniyo, ukunyamezela okungahoywanga, okanye ujongano olungaqinisekanga. Zisombulule kumthombo-kungekhona ngeeshedyuli zokulondolozwa, kodwa kunye nezisombululo ezichanekileyo. Yiloo ndlela usuka kwi-reactive replacement ukuya ekusebenzeni okuqikelelweyo.
