Ukufudumeza isinyithi kuyichaphazela njani imbonakalo yaso?

Ukufudumeza yenye yezona nkqubo zibalulekileyo ekusebenzeni ngentsimbi nakwi-metallurgy. Ukusuka ekubumbeni nasekudibaniseni ukuya ekunyangweni kobushushu kunye nokuqhoboshela, ukufaka ubushushu kwisinyithi kutshintsha ulwakhiwo lwaso lwangaphakathi kunye neempawu zaso zoomatshini nezomzimba. Olu tshintsho lunokuba luncedo okanye lube yingozi kuxhomekeke kubushushu, ubude bexesha, kunye nendlela yokupholisa esetyenzisiweyo.

Ukuqonda indlela ukufudumala okuchaphazela ngayo isinyithi kubalulekile kubavelisi, iinjineli, kunye naye nabani na osebenza kumashishini afana nokwakha, iimoto, i-aerospace, kunye nokwenza izixhobo. Eli nqaku liza kuchaza isayensi engasemva kwezi nguqu, iinkqubo ezahlukeneyo zonyango lobushushu, kunye nemiphumo kumandla, ubulukhuni, ukuguquguquka, kunye nokumelana nokugqwala.

1. Kutheni Ukufudumeza Isinyithi Kutshintsha Iimpawu Zaso

Iintsimbi zinesakhiwo sekristale, oko kuthetha ukuba iiathom zazo zicwangciswe ngendlela ecwangcisiweyo. Xa kusetyenziswa ubushushu, iiathom ziyangcangcazela kakhulu, nto leyo enokubangela ukuhlelwa kwakhona kwesakhiwo sekristale, intshukumo yokwahlukana, kwanotshintsho kwisigaba (njengokusuka kwi-ferrite ukuya kwi-austenite kwintsimbi).

Izinto eziphambili ezichaza indlela ubushushu obuyichaphazela ngayo isinyithi zezi:

• Ubushushu bokufudumeza– Amaqondo obushushu aphezulu abangela utshintsho olukhulu.

• Ubude bexesha lokufudumeza– Ukuvezwa ixesha elide kuvumela utshintsho ukuba lwenzeke ngokupheleleyo.

• Izinga lokuPholisa– Isantya sokupholisa emva kokufudumeza sinefuthe kwisakhiwo sokugqibela kunye neempawu zaso.

• Ukwakhiwa kwesinyithi– Ii-alloys ezahlukeneyo zisabela ngokwahlukileyo kubushushu.

2. Iinkqubo Zonyango Lobushushu Eziqhelekileyo

2.1 Ukufakwa kwe-Annealing

Ukuqhoboshela isinyithi kubandakanya ukufudumeza isinyithi ukuya kubushushu obuthile, ukuyibamba apho, uze uyipholise kancinci. Le nkqubo iyayithambisa isinyithi, iphucule ukuqina kwayo, kwaye inciphise uxinzelelo lwangaphakathi.

Iziphumo:

• Ubunzima obuncitshisiweyo

• Ukwanda kokusebenza

• Ukuqina okuphuculweyo

Izicelo:

• Ukulungiselela isinyithi esenziwe ngentsimbi

• Ukubuyisela ukuguquguquka emva kokusebenza ngokubandayo

2.2 Ukulungisa izinto zibe zezomgangatho ofanayo

Ukulungisa izinto kufana nokuqhoboshela kodwa kubandakanya ukupholisa umoya endaweni yokupholisa i-furnace kancinci. Oku kuvelisa isakhiwo seenkozo ezifanayo kwaye kwandisa amandla xa kuthelekiswa nokuqhoboshela.

Iziphumo:

• Iipropati zoomatshini eziphuculweyo

• Ulwakhiwo olufanayo

• Ukusebenza ngcono koomatshini

Izicelo:

• Iindawo zentsimbi ezakhiweyo

• Izixhobo zezithuthi

2.3 Ukucima

Ukucima kukupholisa ngokukhawuleza kwesinyithi esishushu, ngokuqhelekileyo emanzini, kwioyile, okanye emoyeni. Le nkqubo isetyenziselwa ukwandisa ubulukhuni namandla.

Iziphumo:

• Ubulukhuni obuphezulu

• Ukwanda kobuthathaka ukuba akuqiniswanga

• Ukuncipha kokuguquguquka

Izicelo:

• Izixhobo zokusika

• Iigiya kunye neeshafti

2.4 Ukulinganisela

Ukufudumala kulandela ukucima ukuze kuncitshiswe ukuphuka ngelixa kugcinwa ubulukhuni. Isinyithi siyafudunyezwa kwakhona kubushushu obuphantsi size siphinde sipholiswe.

Iziphumo:

• Ukuqina okwandisiweyo

• Ubunzima obuncitshisiweyo kancinci

• Ukumelana ngcono nokothuka

Izicelo:

• Imithombo

• Izixhobo ezinamandla aphezulu

2.5 Ukuqinisa iiTsheyisi

Ukuqina kwekhava kuyawuqinisa umphezulu ongaphandle wesinyithi ngelixa kugcina umbindi wangaphakathi uthambile kwaye uqinile. Oku kufezekiswa ngeenkqubo ezifana ne-carburizing okanye i-nitriding.

Iziphumo:

• Umphezulu oqinileyo omelana nokuguguleka

• Umbindi oqinileyo wangaphakathi

• Ukuphucula ukumelana nokudinwa

Izicelo:

• Iibheringi

• Amazinyo egiya

3. Imiphumo yokuFudumeza kwiipropati zesinyithi

3.1 Ubulukhuni

Ukufudumeza kunokwandisa okanye kunciphise ubulukhuni kuxhomekeke kwinkqubo. Ukucima kwandisa ubulukhuni, ngelixa ukufakelwa kwe-annealing kunciphisa.

3.2 Amandla

Amandla adla ngokuphuculwa ngonyango lobushushu oluphucula isakhiwo seenkozo, njengokulungisa nokucima. Nangona kunjalo, ukufudumala kakhulu kunokunciphisa amandla ngenxa yokukhula kweenkozo.

3.3 Ubuchule bokusebenza

Ukuguquguquka, okanye ukukwazi ukuguquguquka ngaphandle kokuqhekeka, kuphuculwa ngokuqhoboshela kodwa kuncitshiswe ngokucima.

3.4 Ukuqina

Ukuqina, okukwazi ukufunxa amandla ngaphambi kokuba kuqhekeke, kunokulungiswa ngokuyithambisa emva kokuyicima.

3.5 Ukumelana nokugqwala

Ezinye iinkqubo zokufudumeza, ingakumbi ukuba zenziwe ngendlela engafanelekanga, zinokunciphisa ukumelana nokugqwala ngokubangela ukuna kwe-carbide kwiintsimbi ezingasebenziyo. Unyango olufanelekileyo lobushushu lubuyisela okanye lugcina ukhuseleko lokugqwala.

4. Utshintsho kwiZinyithi ngenxa yobushushu

Xa iintsimbi zifudunyezwa, ulwakhiwo lwazo luyatshintsha. Umzekelo:

• Intsimbi:Itshintsha ukusuka kwi-ferrite/pearlite ukuya kwi-austenite kumaqondo obushushu aphezulu.

• Iialloy zealuminiyam:Imvula iyanyibilika okanye yakheke ngokuxhomekeke kubushushu, nto leyo echaphazela amandla.

• Iialloy zeCopper:Ukukhula kweenkozo kunciphisa amandla kodwa kuphucula ukuhanjiswa kombane.

Olu tshintsho lumisela ibhalansi yokugqibela yobunzima, amandla, kunye nokuguquguquka kwesinyithi.

5. Iingozi zokuFudumeza okungafanelekanga

Ukufudumeza isinyithi ngendlela engafanelekanga kunokukhokelela koku:

• Ubushushu obugqithisileyo:Ibangela ukukhula okugqithisileyo kweenkozo, inciphisa amandla kunye nokuqina.

• Ukususwa kwekhabhohayidreyithi:Ukulahleka kwekhabhoni kumphezulu kwiintsimbi, okunciphisa ubulukhuni.

• Ukugoba okanye ukuphambuka:Ukufudumeza nokupholisa okungalinganiyo kubangela utshintsho olukhulu kubukhulu.

• Ukuqhekeka:Ukupholisa ngokukhawuleza kwezinye ii-alloys kunokubangela iintanda.

6. Ukusetyenziswa kweZinyithi eziTshiswa ngobushushu kwimizi-mveliso

Umzekelo 1: Ishishini leeMoto

Izixhobo zenjini ezifana nee-crankshafts zinyangwa ngobushushu ukuze zikwazi ukudinwa kakhulu.

Umzekelo 2: Ukwenza izixhobo

Izixhobo zokusika ziyacinywa kwaye zithanjiswe ukuze zinike imiphetho ebukhali ukuqina.

Umzekelo 3: Inqwelo-moya

Izixhobo zokufikela ziqiniswe ngecala ukuze zingagugi kakhulu kwaye ziqine ngaphakathi.

7. Indlela Ukufudumala Okuyiphucula Ngayo Ukusebenza Kakuhle

Kwiinkqubo zokuvelisa ezifana nokubumba, ukuqengqeleka, kunye nokuphuma kwezinto, iintsimbi zihlala zifudunyezwa ukuphucula i-plasticity yazo. Oku kuvumela ukuba zibunjwe ngamandla amancinci kwaye kunciphisa umngcipheko wokuqhekeka. Ukusebenza ngobushushu kumaqondo obushushu alawulwayo kukwaphucula isakhiwo seenkozo.

8. Indima yoMmoya oLawulwayo

Kwimizi-mveliso emininzi, ukufudumeza kwenziwa kwindawo elawulwayo (njengegesi engasebenziyo okanye i-vacuum) ukuthintela i-oxidation, i-scaling, kunye nongcoliseko. Oku kubaluleke kakhulu kwiintsimbi ezingasebenziyo kunye nee-alloys ezisebenza kakuhle.

9. Isiphelo

Ukufudumeza isinyithi kutshintsha iimpawu zayo ngeendlela ezibalulekileyo, okuchaphazela ubulukhuni, amandla, ukuguguleka, kunye nokumelana nokugqwala. Nokuba injongo kukwenza isinyithi sithambe xa senziwa, sibe nzima ukusisika, okanye sibe nzima xa sikhuselwa kukungqubana, ukufudumeza kudlala indima ebalulekileyo ekufezekiseni iziphumo ezifunwayo.

Ukukhetha inkqubo yonyango lobushushu echanekileyo nokuyisebenzisa phantsi kweemeko ezilawulwayo kuqinisekisa ukusebenza kakuhle kwesicelo esicetywayo. Njengomthengisi wehlabathi jikelele,i-sakysteelibonelela ngeentsimbi ezifanelekileyo kwiinkqubo ezahlukeneyo zonyango lobushushu, iqinisekisa umgangatho ohambelanayo kunye nokusebenza okuqikelelweyo kwiindawo zoshishino ezifuna amandla.