Kutentha kwakukulu komanso kukana kwamphamvu kwambiri Tungsten screw bolt
Maboti omwe amagwiritsidwa ntchito pa kutentha kwakukulu amayenera kupirira kutentha kwambiri popanda kutaya makina awo kapena kukhulupirika.Mitundu ingapo ya ma bolts ndi zomangira amapangidwira malo otentha kwambiri, kuphatikiza:
1. Mabotolo a Alloy Steel: Mabotolo opangidwa ndi chitsulo cha alloy, monga ASTM A193 Grade B7, ndi oyenera kugwiritsa ntchito kutentha kwakukulu.Ma bolts awa amathandizidwa ndi kutentha kuti apereke mphamvu zabwino komanso kukana kukwawa pakatentha kwambiri.
2. Zitsulo zazitsulo zosapanga dzimbiri: Zina zazitsulo zosapanga dzimbiri, monga 310 zitsulo zosapanga dzimbiri, zimadziwika chifukwa cha kukana kutentha kwambiri.Maboti awa ali ndi kukana kwa okosijeni wabwino ndipo amakhalabe ndi mphamvu pakatentha kwambiri.
3. Inconel bolts: Inconel ndi banja la nickel-chromium-based high-temperature alloys omwe amadziwika chifukwa cha mphamvu zake zotentha kwambiri komanso kukana kwa okosijeni.Maboti a inconel ndi oyenera kugwiritsidwa ntchito kumalo otentha kwambiri monga turbine ya gasi ndi ntchito zakuthambo.
4. Maboti a Titaniyamu: Titaniyamu ndi titaniyamu alloy bolts ndi opepuka komanso amakhala ndi mphamvu zabwino pakatentha kwambiri.Amagwiritsidwa ntchito kwambiri muzamlengalenga ndi ntchito zopangira mankhwala komwe kukana kutentha kumafunika.
5. Zitsulo zachitsulo zomangira: Maboti opangidwa ndi zitsulo zowumbidwa ngati molybdenum, tantalum, ndi niobium ndi oyenera kumadera otentha kwambiri, monga ng'anjo zounikira ndi kupanga ma semiconductor.
Posankha ma bolts kuti agwiritse ntchito kutentha kwakukulu, ndikofunikira kuganizira za kutentha kwapadera, chilengedwe komanso zofunikira zamakina zomwe zimagwiritsidwa ntchito.Kuonjezera apo, kuyika koyenera ndi kulingalira kwa kamangidwe ka fastener ndikofunikira kuti zitsimikizire kuti ntchito yayitali komanso yodalirika ya ma bolts m'malo otentha kwambiri.
Inde, kutentha kumatha kukhudza kwambiri kulimba kwa chinthu.Nthawi zambiri, mphamvu zolimba zazinthu zimachepa pamene kutentha kumawonjezeka.Chodabwitsa ichi chikuwonekera makamaka muzitsulo ndi alloys, koma zimagwiranso ntchito ku zipangizo zina.
Zotsatira za kutentha pa mphamvu zamakokedwe zimakhudzidwa ndi zinthu zosiyanasiyana, kuphatikizapo kapangidwe kazinthu, microstructure, ndi kukhalapo kwa ma alloying elements.Nazi mfundo zofunika kuziganizira:
1. Zida Zamagetsi: Zida zambiri za ductile, monga carbon steel, zimataya mphamvu zowonongeka pamene kutentha kumawonjezeka.Izi ndichifukwa chakuchulukira kwa kusuntha kwa ma dislocation mkati mwa kristalo wa zinthuzo pa kutentha kwambiri, zomwe zingayambitse kutengeka kwakukulu ndi kuchepetsedwa mphamvu.
2. Zipangizo za Brittle: Zida zina, makamaka ma aloyi ndi zoumba, zimatha kuwonetsa machitidwe ovuta kwambiri ndi kutentha.Mwachitsanzo, zida zina zowonongeka zimatha kukhala ndi kuwonjezereka kwamphamvu kwamphamvu pakutentha kokwera chifukwa cha kusintha kwa kusweka kwa zinthuzo.
3. Ma aloyi a kutentha kwambiri: Ma aloyi ena a kutentha kwambiri, monga omwe amagwiritsidwa ntchito muzamlengalenga ndi kupanga magetsi, amapangidwa makamaka kuti asunge mphamvu zawo zolimba pakutentha kwambiri.Ma alloys awa amapangidwa kuti asafewetse ndikusunga makina awo pamalo otentha kwambiri.
4. Creep: Kuphatikiza pa kukhudza mwachindunji mphamvu yamakokedwe, kutentha kwakukulu kungayambitsenso kukwapula, komwe ndi kusinthika kwapang'onopang'ono kwa zipangizo zomwe zimanyamula nthawi zonse.Kukwapula kumatha kuchepetsanso mphamvu zamakomedwe zazinthu pakapita nthawi pakatentha kwambiri.
Ndikofunikira kudziwa kuti kachitidwe kamphamvu ka chinthu ngati kutentha kumatengera kapangidwe kake, kachitidwe, komanso kagwiritsidwe ntchito kake.Popanga zigawo zomwe zimagwiritsidwa ntchito m'malo otentha kwambiri, ndikofunikira kuganizira momwe kutentha kungakhudzire mphamvu yazinthu zomwe zimagwiritsidwa ntchito.
Mwachidule, pamene mphamvu yolimba ya chinthu ingakhudzidwe ndi kutentha, chikhalidwe chenicheni cha izi chimadalira zinthu ndi katundu wake.Kumvetsetsa momwe zinthu zimakhalira pazikhalidwe zosiyanasiyana za kutentha ndizofunika kwambiri kuti pakhale ntchito yodalirika ya zida zopangidwira muzogwiritsa ntchito kutentha kwambiri.
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