Zomwe zimafunikira pakusankha tsinde la valve

Zida zopangira zida za valve ziyenera kusankhidwa malinga ndi izi:

1. Kupanikizika, kutentha ndi makhalidwe a sing'anga yogwirira ntchito.

2. Mphamvu ya gawo ndi ntchito yake muvalavukapangidwe.

3. Ili ndi kuthekera kopanga bwino.

4. Ngati zomwe zili pamwambazi zakwaniritsidwa, payenera kukhala mtengo wotsika.

tsinde zakuthupi

Pakutsegula ndi kutseka kwa valve, tsinde la valve limakhala ndi mphamvu zowonongeka, kupanikizika ndi kugwedezeka, ndipo limagwirizana mwachindunji ndi sing'anga.Pa nthawi yomweyo, pali wachibale frictional kayendedwe ndi kulongedza katundu.Choncho, tsinde la valve liyenera kukhala lokwanira pa kutentha komwe kumatchulidwa.Mphamvu ndi kulimba kwamphamvu, kukana kukana kwa dzimbiri ndi kukana zokanda, komanso kupanga kwabwino.

Zomwe zimagwiritsidwa ntchito kawirikawiri ndizomwe zimagwiritsidwa ntchito.

1. Chitsulo cha carbon

Mukagwiritsidwa ntchito m'madzi ndi sing'anga yotentha yotsika komanso kutentha kwapang'onopang'ono kosapitilira 300 ℃, chitsulo cha A5 wamba chimagwiritsidwa ntchito.

Ikagwiritsidwa ntchito m'madzi ndi sing'anga ya nthunzi yokhala ndi kuthamanga kwapang'onopang'ono komanso kutentha kwapang'onopang'ono kosapitilira 450 ℃, 35 zitsulo zamtundu wapamwamba kwambiri zimagwiritsidwa ntchito.

2. Chitsulo chachitsulo

40Cr (chromium zitsulo) amagwiritsidwa ntchito pamene ntchito kuthamanga sing'anga ndi kuthamanga kwambiri, ndi kutentha sing'anga si upambana 450 ℃ m'madzi, nthunzi, mafuta ndi TV zina.

38CrMoALA nitriding zitsulo angagwiritsidwe ntchito pamene ntchito m'madzi, nthunzi ndi TV zina ndi kuthamanga ndi sing'anga kutentha osapitirira 540 ℃.

25Cr2MoVA chromium molybdenum vanadium chitsulo nthawi zambiri amagwiritsidwa ntchito mu sing'anga yothamanga kwambiri ndi kutentha kwapang'onopang'ono kosapitilira 570 ℃.

Chachitatu, chitsulo chosapanga dzimbiri chosapanga asidi

Amagwiritsidwa ntchito pazinthu zosawononga komanso zosawononga zowononga zokhala ndi kupanikizika kwapakatikati komanso kuthamanga kwambiri, ndipo kutentha kwapakati sikudutsa 450 ° C.1Cr13, 2Cr13, 3Cr13 chromium zitsulo zosapanga dzimbiri zitha kusankhidwa.

Mukagwiritsidwa ntchito pazakudya zowononga, zitsulo zosapanga dzimbiri zosagwira asidi monga Cr17Ni2, 1Cr18Ni9Ti, Cr18Ni12Mo2Ti, Cr18Ni12Mo3Ti, ndi PH15-7Mo zitsulo zowumitsa mpweya zitha kusankhidwa.

Chachinayi, chitsulo chosagwira kutentha

Mukagwiritsidwa ntchito pazitsulo zotentha kwambiri zomwe kutentha kwake sikudutsa 600 ℃, 4Cr10Si2Mo martensitic zitsulo zosagwira kutentha ndi 4Cr14Ni14W2Mo austenitic zitsulo zosagwira kutentha zimatha kusankhidwa.