I-alloy Steel Fasteners Manufacturers | Iimpawu ze-ASTM A193 kunye ne-A320 

Njengenkulumbuso ialloy steel fasteners umenzi, sisebenza ngokukhethekileyo kubunjineli bezisombululo zebholiti ezisebenza ngokuphezulu ezihambelana ne-ASTM A193 kunye ne-ASTM A320 . Umgca wethu wemveliso yenzelwe iimeko ezingqongileyo ezigqithisileyo, kubandakanywa ukusetyenzwa kwepetrochemical ephezulu yoxinzelelo, izicelo ze-cryogenic, kunye noomatshini obunzima boshishino. Ngokusebenzisa iinkqubo eziphambili ze-metallurgical kunye nolawulo olungqongqo lomgangatho, sihambisa iziqhoboshi ezibonelela ngamandla okuqina, ukuxhathisa ukubola, kunye nokuzinza kwe-thermal. Esi sikhokelo sichaza ulwahlulo lobugcisa phakathi kweBanga le-B7, i-L7, kunye nezinye ii-alloys ezibalulekileyo, iinjineli ezincedisayo kunye neengcali zokuthengwa kwempahla zikhethe amacandelo afanelekileyo kwiiassembly ezibalulekileyo zokhuseleko.

Ukuqonda i-Alloy Steel Fasteners kwi-Industrial Applications

I-alloy steel fasteners yahlukile kwi-carbon steel counterparts ngenxa yokongezwa ngabom kwezinto ezixutywayo ezifana ne-chromium, i-molybdenum, i-nickel, kunye ne-vanadium. Ezi zinto ziguqula i-microstructure yentsimbi, ukuphucula iimpawu zomatshini eziyimfuneko kwimimiselo yoshishino. Ngokungafaniyo ne-hardware yebakala lemveliso, iziqhoboshi ze-alloy ezinobunjineli ziphantsi kweenkqubo ezingqongqo zokunyanga ubushushu, kubandakanywa nokucinywa kunye nobushushu, ukufezekisa ubulukhuni obuthile kunye namanqanaba okuqina.

Kumacandelo afana ne-oyile negesi, ukuveliswa kwamandla, kunye nokusetyenzwa kweekhemikhali, ukusilela akuyiyo inketho. Ingqibelelo yoqhagamshelo lweflange okanye inqanawa yoxinzelelo ixhomekeke kakhulu kwisakhono sebholithi yokugcina umthwalo weclamp phantsi kobushushu obuguquguqukayo kunye noxinzelelo. I-ASTM A193 ihlanganisa insimbi ye-alloy kunye nentsimbi yensimbi engenasici kwi-high-temperature okanye inkonzo yoxinzelelo oluphezulu, ngelixa i-ASTM A320 igxile kwizicelo eziphantsi kobushushu. Ukuqonda le migangatho kubalulekile ekuqinisekiseni ukhuseleko lokusebenza kunye nokuphila ixesha elide.

Indima yeMetallurgy kwiFastener Performance

Ukusebenza kwe-alloy steel fastener kuchazwe ngokubunjwa kweekhemikhali kunye nembali ye-thermal. I-Chromium yongeza ukuxhathisa umhlwa kunye nokuqina, ngelixa i-molybdenum inyusa amandla kumaqondo obushushu aphakamileyo kwaye iphucula ukuxhathisa ukukhasa. I-nickel ifaka isandla ekuqineni, ngakumbi kumaqondo obushushu angaphantsi kwe-zero, okwenza kube yimfuneko kwiinkonzo ze-cryogenic. I-Vanadium icoca ubume bengqolowa, iphucula amandla kunye nokumelana nokukhathala.

Inkqubo yethu yokuvelisa iqinisekisa ukuba ezi zibonelelo zisisiseko zifezekiswa ngokupheleleyo ngolawulo oluchanekileyo lwamaqondo obushushu angqingqwa kunye namazinga okupholisa. Ukunyangwa kobushushu obungafanelekanga kunokukhokelela ekuqhekekeni okunqabileyo okanye amandla anganeleyo esivuno, ukuphazamisa yonke indibano. Ke ngoko, ukukhangela kumenzi oneelabhoratri zesinyithi eziqinisekisiweyo kubalulekile ekuqinisekiseni ukuba ibhetshi nganye iyahlangabezana neemfuno ezingqongqo zemigangatho yamazwe ngamazwe.

I-ASTM A193 vs. I-ASTM A320: Iiyantlukwano eziphambili kunye neendlela zokuKhetha

Ukukhetha iinkcukacha ezichanekileyo linyathelo lokuqala kubunjineli be-fastener. Ngelixa zombini i-ASTM A193 kunye ne-ASTM A320 zilawula ukubolithwa kwentsimbi yealloyi, zisebenza ngokwemeko ezahlukeneyo zokusingqongileyo. Ukubhidanisa ezi zimbini kunokukhokelela kukusilela okuyintlekele, ngakumbi kwiimeko zobushushu obugqithisileyo.

I-ASTM A193 ngowona mgangatho ubalaseleyo weenkonzo zobushushu obuphezulu kunye noxinzelelo oluphezulu. Ibandakanya amabanga ahlukeneyo, kunye neBakala B7 lelona lisetyenziswa kakhulu kumashishini epetroleum nawemichiza. Ngokwahlukileyo, i-ASTM A320 yenzelwe inkonzo yobushushu obuphantsi, apho iintsimbi zekhabhoni ezisemgangathweni ziba brittle kwaye zithande ukusilela. Amabanga afana ne-L7 kunye ne-L43 aphathwa ukuze kugcinwe i-ductility kunye nokuqina kumaqondo okushisa aphantsi -150 ° F (-101 ° C).

Kutheni le nto iMpembelelo yoVavanyo ibalulekile kwiziQinisekiso zoBubushushu obuphantsi

Uphawu oluchazayo lwe-ASTM A320 fasteners luvavanyo lwempembelelo yeCharpy V-Notch enyanzelekileyo. Kwiqondo lokushisa eliphantsi, i-crystal structure yensimbi inokutshintsha ukusuka kwi-ductile ukuya kwi-brittle, into eyaziwa ngokuba yi-ductile-to-brittle transition. Ukuba i-fastener ayinabo ukuqina okwaneleyo, inokuqhekeka phantsi komthwalo owothusayo endaweni yokonakala kweplastiki.

Iprothokholi yethu yemveliso ye-ASTM A320 yeBanga le-L7 ibandakanya ubuchule obukhethekileyo bokucima ukuze kuqinisekiswe ulwakhiwo oluhle lweenkozo. Ibhetshi nganye ivavanywa kumaqondo obushushu athile ukuqinisekisa ukufunxa amandla. Le datha ibhalwe kwiNgxelo yoVavanyo lweMpahla (MTR), ibonelela ngokulandeleka kunye nokuqinisekiswa kweeprojekthi ezibalulekileyo ze-cryogenic.

Ukuntywila nzulu kwi-ASTM A193 iBanga B7: Umgangatho woShishino

I-ASTM A193 iBanga le-B7 ngokungathandabuzekiyo yeyona ixhaphakileyo ibholiti yentsimbi esetyenziswa kwi-industrial flanging. Yenziwe ngentsimbi yeChromium-Molybdenum (ngokuqhelekileyo i-AISI 4140 okanye i-4142), inika ibhalansi ebalaseleyo yamandla, ukuqina, kunye nokumelana nokunxiba. Ifanelekile kubushushu benkonzo ukuya kuthi ga kwi-1000 ° F (538 ° C), iyenze ilungele imigca yomphunga, i-heat exchangers, kunye nemikhumbi yoxinzelelo.

IiPropati zoomatshini kunye neMida

Izibophelelo zeBanga le-B7 zifuneka ukuba zibe namandla amancinci angama-125 ksi (860 MPa) kunye namandla okuvelisa i-105 ksi (720 MPa) kububanzi ukuya kwi-2.5 intshi. Ukuqina kulawulwa ngokungqongqo phakathi kwe-241 kunye ne-321 HB. Ukugqithiswa komda wobunzima obuphezulu kunokunyusa ukuchaphazeleka kwi-hydrogen embrittlement kunye noxinzelelo lwe-corrosion cracking, ngakumbi kwiindawo zenkonzo ezimuncu ezine-hydrogen sulfide (H2S).

Kwizicelo ezibandakanya i-H2S, ukuthotyelwa kwe-NACE MR0175/ISO 15156 kudla ngokufuneka. Kwiimeko ezinjalo, ubunzima beebholithi ze-B7 kufuneka bufakwe kwi-22 HRC (malunga ne-248 HB). Sinikezela ngeeprothokholi ezilungiselelweyo zonyango lobushushu ukuhlangabezana nale mida yobulukhuni ngaphandle kokuphazamisa imfezeko yesakhiwo efunwa ngumgangatho we-ASTM.

I-ASTM A193 iBanga B16: iNtsebenzo eYongezelelweyo kumaqondo obushushu aphakamileyo

Xa iimeko zenkonzo zingaphezu kwamandla eBakala B7, iBakala B16 iba lolona khetho lukhethwayo. I-B16 iqulethe amanqanaba aphezulu e-chromium, i-molybdenum, kunye ne-vanadium. Olu qulunqo lunikeza ukugcinwa okukhulu kwamandla kumaqondo okushisa angaphezu kwe-1000 ° F kunye nokuphucula ukuchasana nokunciphisa uxinzelelo.

I-B16 iqhele ukusetyenziswa kwiibhokisi zeinjini yomoya kunye neentloko zoxinzelelo oluphezulu lomphunga. Ukongezwa kwevanadium kuzinzisa i-carbides, kuthintela ukukhula kweenkozo ngexesha lokuvezwa ixesha elide kubushushu obuphezulu. Ngelixa i-B16 ibiza kakhulu kune-B7 ngenxa yomxholo wayo ontsonkothileyo we-alloy, ubomi bayo benkonzo eyandisiweyo kwimijikelo yobushushu obugqithisileyo buhlala bukhokelela kwixabiso eliphantsi lilonke lobunini.

Amabanga e-ASTM A320: Ukuqinisekisa uKhuseleko kwiNdawo eCryogenic

Ukusetyenziswa kweCryogenic kunika imingeni ekhethekileyo. Izinto ezisebenza kakuhle kumaqondo obushushu akwi-ambient zinokusilela ngokuyingozi xa zibekwe kwi-liquefied natural gas (LNG), liquid nitrogen, okanye ioksijini. I-ASTM A320 ijongana noku ngokuchaza i-alloys kunye nonyango lobushushu olugcina i-ductility kumaqondo obushushu angaphantsi kwe-zero.

IBakala L7: I-Cryogenic Workhorse

I-ASTM A320 iBanga le-L7 ngokwekhemikhali iyafana ne-A193 B7 kodwa ingena kwirejimeni yonyango lobushushu olwahlukileyo ukuze kunyuswe ubushushu obuphantsi. Isetyenziswa ngokubanzi kwizityalo zokulungisa i-LNG kunye neenkqubo zesikhenkcisi. Umahluko ophambili yimfuno yovavanyo lwempembelelo: Iibholiti ze-L7 kufuneka zibonise ukufunxa okwaneleyo kwamandla kwi--150 ° F (-101 ° C).

Inkqubo yethu yokuvelisa i-L7 ibandakanya ukuthambisa okuchanekileyo ukukhulula uxinzelelo lwangaphakathi olubangelwa ngexesha lokucima. Oku kuqinisekisa ukuba i-fastener inokumelana ne-thermal contraction kunye nemijikelezo yokwandisa ngaphandle kokuphuhlisa i-micro-cracks. Sinikezela ngeepakethi zesatifikethi ezipheleleyo, kubandakanywa iziphumo zovavanyo lwempembelelo kwinani ngalinye lobushushu, ukwanelisa iimfuno ezingqongqo zeprojekthi ye-QA/QC.

IBanga L43 kunye ne-LC7: Ii-Alloys eziKhethekileyo ze-Extreme Cold

Ngeenkonzo ezifuna kakhulu i-cryogenic, iBanga L43 kunye neLC7 ziyafumaneka. I-L43 yi-nickel-chromium-molybdenum alloy enika ubunzima obuphezulu kumaqondo obushushu aphantsi kakhulu. I-LC7 luhlobo olunekhabhoni ephantsi ye-L7, eyilelwe ukunciphisa imvula ye-carbide kunye nokuphucula ukuwelda ukuba uhlengahlengiso lwasemva kofakelo luyafuneka.

Ukukhethwa phakathi kwe-L7, i-L43, kunye ne-LC7 kuxhomekeke kwiqondo elithile lobushushu bensimbi yoyilo (MDMT) yesicelo. Iqela lethu lobunjineli lincedisa abathengi ekutolikeni iikhowudi zemibhobho yenkqubo ye-ASME B31.3 ukumisela ibakala elifanelekileyo ngokusekelwe kwiiparamitha zokusebenza kunye nemiba yokhuseleko.

UkuGqwesa kweMveliso: Ukusuka kwiMathiriyeli ekrwada ukuya kwiMveliso egqityiweyo

Ukuvelisa izibophelelo zentsimbi ezikumgangatho ophezulu kufuna okungaphezulu nje kokwenza imicu. Ifuna indlela edibeneyo ethe nkqo elawula inqanaba ngalinye lemveliso. Njengomvelisi ozinikeleyo, sijongana nokukhangela izinto ezikrwada, ukubunjwa okushushu, unyango lobushushu, umatshini, ukugqitywa komphezulu kunye novavanyo.

Ngokusekwe e-Handan, eHebei-isixeko esidume kwihlabathi jikelele ngenkqubo yaso yokwenza izinto ezikhawulezayo-inkampani yethu idibanisa ngaphezulu kweminyaka elishumi yamava oshishino kunye nokudityaniswa okuqinileyo koshishino kunye norhwebo. Ngelixa sivelisa iindidi ngeendidi zezixhobo zentsimbi, kuquka igeckos ekhethekileyo yecasing kunye namazinyo eplanga adityaniswe ngezikrufu zamehlo egusha, ubuchule bethu obungundoqo busekuphuhliseni nasekuveliseni iziqhoboshi ezicaciswe kakhulu kwimizi-mveliso. Sithobela intanda-bulumko esekwe kwintembeko yeshishini, ngokuqhubekayo sityala imali kuphando lwezenzululwazi kwaye sazisa italente yobuchwepheshe obuphezulu ukucokisa ubugcisa bethu bemveliso. Oku kuzibophelela kusivumela ukuba sinikezele ngeemveliso ezihlangabezana nemigangatho ye-ASTM kuphela kodwa kunye ne-GB, i-DIN, i-JIS, kunye neenkcukacha ze-ANSI, ezikhonza abathengi kumazwe angaphezu kwama-26.

Ukuqulunqa okushushu vs. Ukubumba okubandayo

Kwi-alloy steel fasteners, ngakumbi ezo zinobubanzi obukhulu kunye namabakala aphezulu, ukubunjwa okushushu kuyindlela ekhethiweyo yokwenza. I-Hot forging ilungelelanisa isakhiwo sengqolowa yentsimbi, ukudala ukuhamba okuziinkozo okuqhubekayo okulandela imilo yebholithi. Oku kubangela iimpawu eziphezulu zemishini xa kuthelekiswa nokubumba okubandayo, okunokwazisa uxinzelelo olushiyekileyo kunye nokuphazamisa ukuqhubeka kwengqolowa.

Oomatshini bethu bokudala bobuchwephesha banamhlanje baqinisekisa ukuchaneka komgangatho ochanekileyo kunye nokuhamba okuziinkozo okona kulungileyo. Le nkqubo inciphisa amathuba okungaphumeleli kokukhathala kwangaphambi kwexesha, ngokukodwa kwi-head-to-shank transition area, eyindawo yoxinzelelo oluqhelekileyo. Kwiidayamitha ezincinci apho ukubumba okubandayo kunokwenzeka, sisebenzisa amanyathelo aphakathi okubamba ukubuyisela ukudubeka phambi kokuthunga kokugqibela.

Ukuchaneka komsonto kunye noLawulo loNyamezelo

Umgangatho womsonto uchaphazela ngokuthe ngqo ukuhanjiswa kwamandla okubamba kunye nobomi bokudinwa kwelungu. Sisebenzisa iindlela eziphambili zokuqengqeleka kunye neendlela zokusika ukufikelela kwiKlasi 2A okanye i-3A yokunyamezelana ngokwe-ASME B1.1. I-thread rolling, ngokukodwa, umsebenzi-wenza lukhuni umphezulu weentambo, ukwandisa ukumelana nokudinwa kunye nokudala ukugqiba okugudileyo okunciphisa ukungqubuzana ngexesha lokuqinisa.

Ukuhlolwa kwegeyiji engqongqo iqinisekisa ukuba idiameter yepitch, idiameter enkulu, kunye ne-thread angle ingaphakathi kwemida echaziweyo. Imisonto engalungelelanisiweyo okanye engaphandle kokunyamezela inokubangela ukugalela, ukuhanjiswa komthwalo ongalinganiyo, kwaye ekugqibeleni kukhululwe umdibaniso. Iinkqubo zethu zokuhlola ezizenzekelayo zokubona iziphene ezincinci ezinokuphoswa ziigeyiji zemveli, ziqinisekisa ukuthotyelwa kwe-100% kunye nemigangatho yobukhulu.

UNyango loMphezulu kunye neeNgqungquthela zoKhuseleko lokuMhlwa

Intsimbi ye-alloy, ngelixa yomelele, isengozini yokubola ukuba ayikhuselwanga ngokufanelekileyo. Ukukhethwa kwengubo kuxhomekeke kwindawo yokusebenza, ukushisa, kunye nokuhambelana neendawo zokukhwelana. Ukukhethwa kokutya okungalunganga kunokukhokelela kwi-hydrogen embrittlement okanye ukuthotywa kwe-coating phantsi kwebhayisikile ye-thermal.

• I-Phosphate kunye ne-oyile: Isiphelo esiqhelekileyo, esineendleko ezifanelekileyo zokusetyenziswa kwemizi-mveliso ngokubanzi. Ibonelela ngokumelana nokugqwala okuphakathi kwaye isebenza njenge-lubricant ngexesha lofakelo. Nangona kunjalo, ayifanelekanga kwiindawo ezinobungozi kakhulu.
• Xylan/PTFE Coatings: Ezi zambatho ze-fluoropolymer zibonelela ngokugqwesileyo kokuxhathisa ukubola kunye ne-coefficient ephantsi yokukhuhlana. Zilungele usetyenziso olufuna ubudlelwane obuchanekileyo be-torque-tension kwaye ziyaxhathisa kwiikhemikhali ezininzi.
• Ukufakwa kweZinc: Ibonelela ngokhuseleko oluhle lokutya kodwa lukhawulelwe kumaqondo obushushu angaphantsi kwama-400°F (204°C). Ngaphezulu kolu bushushu, i-zinc inokubandezeleka ngenxa yolwelo lwentsimbi embrittlement xa udibana nentsimbi. Ukubhaka i-Hydrogen embrittlement yokubhaka kunyanzelekile emva kokufakwa kwe-electroplating.
• IDacromet/Geomet: Iingubo ze-inorganic ezisekelwe emanzini ezinikezela ukuxhathisa okuphezulu kunye nokunyamezela ubushushu ukuya kwi-600 ° F (315 ° C). Bakhululekile kwi-chromium enehexavalent kwaye abakhathazwa yi-hydrogen embrittlement.

Ukulawula iiNgozi zeHydrogen Embrittlement

I-Hydrogen embrittlement yinkxalabo ebalulekileyo kwi-high-high-forth-forth alloy steel fasteners (amandla e-tensile> 150 ksi okanye ukuqina> 35 HRC). Ngexesha lokucoca i-electroplating okanye i-asidi, iiathom ze-hydrogen zinokusasazeka kwileti yentsimbi, ibangele ukulibaziseka kokungaphumeleli koxinzelelo. Ukunciphisa oku, siphumeza iinkqubo zokubhaka ezinyanzelekileyo ngoko nangoko emva kokubekwa. Amalungu afudunyezwa kwi-375°F (190°C) kangangexesha elithile ukuvumela i-hydrogen evalelekileyo ukuba ibaleke phambi kokuba kuphole imathiriyeli.

Ukusetyenziswa okubalulekileyo, sincoma ukusebenzisa i-mechanical plating okanye i-non-electrolytic coatings efana ne-Dacromet, engazisi i-hydrogen kwi-substrate. Iqela lethu lobuchwephesha livavanya iprofayile yomngcipheko womyalelo ngamnye ukucebisa olona nyango lukhuselekileyo nolusebenzayo.

UQinisekiso loMgangatho kunye neeProthokholi zeSiqinisekiso

Intembeko yakhelwe phezu kokungafihli kunye nokuqinisekisa. Inkqubo yethu yolawulo lomgangatho ihambelana nemigangatho ye-ISO 9001, iqinisekisa iinkqubo ezingaguqukiyo kunye nokulandeleka okubhaliweyo. Yonke imithwalo yezibophelelo zentsimbi ye-alloy ihamba kunye namaxwebhu abanzi aqinisekisa ukuthotyelwa kwemigaqo ye-ASTM.

Iingxelo zoVavanyo lweMathiriyeli (MTR)

I-MTR luxwebhu oluqinisekisiweyo olulandelela iimpawu ezibonakalayo kunye neekhemikhali zezinto ezisetyenziswa kwiifasteners. Ibandakanya idatha kwi:

• Uhlalutyo lokwakheka kweekhemikhali (iCarbon, iManganese, iPhosphorus, iSulfur, iSilicon, iChromium, iMolybdenum, njl.
• Iziphumo zovavanyo lomatshini (amandla okuqina, amandla esivuno, ukolulwa, ukuNcitshiswa koMmandla)
• Ubunzima bokufunda (uBrinell okanye uRockwell)
• Amaxabiso ovavanyo lwempembelelo (kumabanga e-ASTM A320)
• Amanani amaninzi onyango lobushushu kunye neetshathi zesithando somlilo

Sigcina iisampulu kwibhetshi nganye yokuvelisa ixesha elichaziweyo, sivumela uvavanyo oluzimeleyo lomntu wesithathu ukuba lufunwa ngumxhasi. Eli nqanaba lokuphendula libalulekile kwiiprojekthi kumashishini alawulwayo afana namandla enyukliya, ukugrumba kude nonxweme, kunye nokusetyenzwa kwamayeza.

Uhlolo lweQela lesithathu kunye neSiqinisekiso

Kwiiprojekthi ezifuna ukongamela okongeziweyo, siququzelela ukuhlolwa kwee-arhente ezamkelweyo zeqela lesithathu ezifana ne-SGS, i-Bureau Veritas, okanye i-DNV. Ezi arhente ziqinisekisa ukuchaneka komda, ukubunjwa kwezinto, kunye nokusebenza koomatshini ngokuchasene nemigangatho echaziweyo. Sikwaxhasa uhlolo oluthile lwabathengi, sivumela iinjineli zakho zomgangatho ukuba zingqine iinkqubo zovavanyo kunye nokuphicotha izibonelelo zethu zokuvelisa.

Imingeni eqhelekileyo kwi-Alloy Steel Fastener Procurement

Ukufumana izibophelelo zentsimbi yealloy kubandakanya ukuhamba ngemingeni emininzi yobugcisa kunye nolungiselelo. Ukuqonda le migibe kunokuthintela ukulibaziseka kweprojekthi kunye nokusebenza kwakhona okunendleko enkulu.

IiMathiriyeli zomgunyathi nezingekho mgangathweni

Imarike izaliswe zizibophelelo ezikumgangatho ophantsi ezibanga ukuthotyelwa kwemigangatho ye-ASTM kodwa zingenawo umxholo ofunekayo we-alloy okanye unyango lobushushu. Ezi bholiti “zomgunyathi” zinokudlula kuhlolo olubonakalayo kodwa zisilele phantsi komthwalo okanye kwindawo ezonakalisayo. Ukunqanda oku, hlala uvela kubavelisi ababonelela ngeeMTR ezingqinisisekayo ezidityaniswe kumanani athile obushushu. Uhlalutyo lwe-Spectrographic lungasetyenziselwa ukuqinisekisa ukubunjwa kweekhemikhali xa ufunyenwe.

Ixesha lokukhokela kunye nokufumaneka

Amanqanaba e-alloy awodwa afana ne-B16 okanye i-L43 asenokungafumaneki lula ngaphandle kwe-shelf ngenxa yokuntsokotha kwemveliso yawo. Amaxesha okukhokela anokwahluka ngokusekwe kubukho bemathiriyeli ekrwada kunye nokucwangciswa kwesithando somlilo. Ukuzibandakanya kwangethuba kunye nomenzi wakho ngexesha lesigaba soyilo kuvumela ukucwangciswa okungcono kunye nolawulo lwempahla. Sigcina iimfumba ezicwangcisiweyo zemathiriyeli ekrwada eqhelekileyo ukukhawulezisa imveliso kwiimfuno ezingxamisekileyo.

Ukuhambelana neMating Components

I-fastener yinxalenye enye kuphela yokudibanisa. Ukuhambelana namandongomane, iiwasha kunye neeflange kubalulekile. Ukusebenzisa i-bolt eqinile kunye ne-nati ethambileyo kunokukhokelela ekukhutshweni kwentambo, ngelixa i-coefficients yokwandisa i-thermal engafanelekanga inokubangela ukulahlekelwa kokulayishwa kwangaphambili kumaqondo okushisa aphezulu. Sincoma ukusebenzisa amantongomane kunye neewasha ezihambelana nebakala le-bolt kunye neenkcukacha zezinto eziphathekayo, ezifana ne-ASTM A194 iBanga le-2H i-nuts ye-B7 bolts.

I-FAQ: Imibuzo Ebuzwa Rhoqo malunga ne-Alloy Steel Fasteners

Ngobuphi obona bushushu benkonzo buphezulu kwi-ASTM A193 Grade B7?

I-ASTM A193 iBanga B7 ifanelekile ngokubanzi kubushushu benkonzo ukuya kuthi ga kwi-1000°F (538°C). Ngaphezulu kolu bushushu, izinto eziphathekayo zinokuba namava okunyuka okubalulekileyo kunye nokuphumla koxinzelelo, okukhokelela ekungaphumelelini kokuhlangana. Kubushushu obuphezulu, iBanga le-B16 okanye amabakala ensimbi engenasici njenge-B8 ayacetyiswa.

Ngaba iibholiti ze-ASTM A320 L7 zingasetyenziswa kwiqondo lobushushu begumbi?

Ewe, iibholiti ze-ASTM A320 L7 zingasetyenziswa kumaqondo obushushu akhoyo. Nangona kunjalo, zibiza kakhulu kune-A193 B7 bolts ngenxa yovavanyo olongezelelweyo lwempembelelo kunye nonyango olukhethekileyo lobushushu. Ngaphandle kokuba ubushushu obuphantsi buyimfuneko ethile, i-B7 idla ngokuba lolona khetho lungabizi kakhulu kwizicelo eziqhelekileyo zemizi-mveliso.

Uthini umahluko phakathi kweB7 kunye neL7 bolts?

Amachiza, i-B7 kunye ne-L7 zifana kakhulu (zombini ziyi-Chromium-Molybdenum steels). Umahluko ophambili ulele kunyango lobushushu kunye novavanyo. I-B7 ilungiselelwe amandla obushushu obuphezulu, ngelixa i-L7 ilungiselelwe ukuqina kobushushu obuphantsi kwaye kufuneka iphumelele iimvavanyo zempembelelo ze-Charpy V-Notch kwi -150 ° F. I-L7 ngokuyimfuneko i-bolt ye-B7 eneempawu eziqinisekisiweyo ze-cryogenic.

Ndikuthintela njani ukugalela kwiziqhoboshi zentsimbi yealloyi?

IGalling luhlobo lokunxiba olubangelwa kukuncamathela phakathi kwemiphezulu yokutyibilika. Ukuthintela i-galling, sebenzisa i-lubricant okanye i-anti-seize compounds ngexesha lofakelo. Iingubo ezifana ne-PTFE okanye i-Xylan nazo zinciphisa ukukhuhlana. Kuphephe ukuqinisa kakhulu, kwaye uqinisekise ukuba imisonto ye-nut kunye ne-bolt icocekile kwaye ayinayo inkunkuma. Ukusebenzisa izinto ezingafaniyo kwibholiti kunye ne nut kunokunceda, kodwa kufuneka kuthathelwe ingqalelo ukuphepha ukubola kwegalvanic.

Ngaba uyabonelela ngeefasteners ze-NACE MR0175 izicelo ezithobelayo?

Ewe, sibonelela ngeefasteners zentsimbi ye-alloy ehambelana ne-NACE MR0175 / ISO 15156 yendawo yenkonzo emuncu. Oku kubandakanya ulawulo olungqongqo lobulukhuni (max 22 HRC) kunye nokwakheka kweekhemikhali ukuxhathisa ukuqhekeka kwe-sulfide yoxinzelelo. Izatifikethi ezingqina ukuthotyelwa kwe-NACE zibonelelwa nge-MTR.

ISikhokelo sokuKhethwa kweQhinga leeNjineli kunye nokuFumana

Ukukhetha i-alloy steel fastener efanelekileyo yibhalansi yokusebenza, iindleko, kunye nolawulo lomngcipheko. Nantsi indlela elungelelanisiweyo yokwenza isigqibo esifanelekileyo:

1. Chaza iMiqathango yokuSebenza: Qinisekisa ubuncinci kunye namaqondo okushisa aphezulu, amanqanaba oxinzelelo, kunye nobukho bezinto ezitshabalalisayo (umzekelo, i-H2S, i-chlorides).
2. Khetha iNgcaciso: Sebenzisa i-ASTM A193 yeqondo eliphezulu / uxinzelelo kunye ne-ASTM A320 kwi-temp ephantsi / izicelo ze-cryogenic.
3. Khetha iBanga: Qala nge-B7 okanye i-L7 njengokhetho olusisiseko. Ukuphucula ukuya kwi-B16, L43, okanye amabanga angenastainless kuphela ukuba iimeko ezithile zokusingqongileyo ziyala.
4. Misela iiMfuno zokugquma: Khetha isambatho esibonelela ngokhuseleko oluluqilima ngaphandle kokubeka esichengeni uzinzo lwe-thermal okanye ukwazisa imingcipheko ye-hydrogen embrittlement.
5. Qinisekisa iiMqinisekiso zoMboneleli: Qinisekisa ukuba umenzi uphethe isatifikethi se-ISO 9001 kwaye unokubonelela ngomkhondo ogcweleyo nge-MTRs.

Le ndlela icwangcisiweyo inciphisa umngcipheko wokungaphumeleli kwangaphambi kwexesha kwaye iqinisekisa ukuba izixhobo zakho zokusebenza zisebenza ngokukhuselekileyo nangempumelelo kubo bonke ubomi bayo boyilo.

Isiphelo: Ukusebenzisana ngokuchaneka nokuthembeka

Kwindawo yokwakhiwa kwemizi-mveliso kunye nokugcinwa, ukunyaniseka kwayo yonke imiba yoqhagamshelwano. I-alloy fasteners yentsimbi yenziwe kwiinkcazo ze-ASTM A193 kunye ne-A320 ziyintsika yemisebenzi ekhuselekileyo, ephezulu yokusebenza kumandla, iikhemikhali, kunye namacandelo okuvelisa anzima. Ngokuqonda i-nuances ye-metallurgy, unyango lobushushu, kunye novavanyo, iinjineli zinokwenza izigqibo ezinolwazi ezonyusa ukuthembeka kunye nokunciphisa iindleko zomjikelo wobomi.

Ukuzinikela kwethu kunabela ngaphaya konikezelo nje; sisebenza njengeqabane lobugcisa, sinikezela ngobuchule ekukhetheni izinto eziphathekayo, uhlalutyo lokusilela, kunye nezisombululo zokwenziwa kwesiko. Ngeqela lobuchwephesha lobuchwephesha kunye noomatshini abaphambili, sithobela umgaqo "womgangatho kuqala, umthengi kuqala," sihlala sifuna ukubonelela ngenkonzo ecingayo kunye namaxabiso akhuphisanayo. Nokuba ufuna izikhonkwane zeBanga le-B7 ezisemgangathweni zotshintsho lokucoca okanye iibholithi ze-L7 ezikhethekileyo kwiziko le-LNG, imigaqo yethu engqongqo yokuqinisekisa umgangatho iqinisekisa ukuba isiqhoboshi ngasinye sihlangabezana neyona migangatho iphezulu yokugqwesa.

Ukufumana iinkcukacha zedatha yedatha, ukucaphula isiko, okanye ukubonisana ngeemfuno zakho ezithile zeprojekthi, qhagamshelana neqela lethu lokuthengisa lobunjineli namhlanje. Masikuncede ukhusele imisebenzi yakho ngezisombululo zokuqiniswa kobunjineli obuchanekileyo.

Phonononga uluhlu lwethu olupheleleyo lweziQinisekiso zoShishino kunye neMithombo yobuGcisa