Bokosi-mtundu wokaniza ng’anjo njira yokhazikitsira parameter

1. Kutsimikiza kwa kutentha kwa ng’anjo

Pamene kutentha kofulumira kumagwiritsidwa ntchito mu ng’anjo ya bokosi, moyo wautumiki wa waya wotsutsa umaganiziridwa. Nthawi zambiri, kutentha kwa ng’anjo kumayikidwa pa 920 ~ 940 ℃ (waya wokana amapangidwa ndi zinthu za chromium-nickel), 940 ~ 960 ℃ (waya wokana amapangidwa ndi chitsulo-chromium-aluminium chuma) kapena 960 ～980 ℃ (Waya wokana ndi zinthu zomwe zimakhala ndi aloyi monga niobium ndi molybdenum).

2. Kudziwa kuchuluka kwa ng’anjo yoyikidwa

Kuchuluka kwa ng’anjo yoyikidwa nthawi zambiri kumatsimikiziridwa molingana ndi mphamvu ya ng’anjo ndi malo ogwiritsira ntchito. Mfundo ndi yakuti: pamwamba pa khoma la ng’anjo ya mtanda woyamba wa workpieces wafika kutentha kwapadera pamaso pa ng’anjoyo, ndipo kutentha kwa ng’anjo kumatha kubwereranso kutentha komwe kumatchulidwa pambuyo pa kukhazikitsa kulikonse. Ngati katundu wa ng’anjo ndi wamkulu kwambiri ndipo sagwirizana ndi mphamvu ya ng’anjo, kutentha kwa ng’anjo sikudzabwezeretsedwa kwa nthawi yaitali, zomwe zidzakhudza kulondola kwa kuwerengera nthawi. Pakupanga kwakukulu, imatha “kuchepetsedwa kukhala magawo” ndikuchitidwa mosalekeza m’magulu.

3. Kutsimikiza kwa nthawi yotentha

Nthawi yotenthetsera mwachangu nthawi zambiri imawerengedwa molingana ndi kukula kwa gawo la mtanda, ndikutsimikiziridwa molingana ndi momwe zinthu zilili komanso zomwe zidachitika m’mbuyomu:

(1) Nthawi yotentha yofulumira ya chidutswa chimodzi ikhoza kuwerengedwa motere:

t = malonda

Kumene t: Kutentha kwachangu nthawi (s);

a: Kutentha kwanthawi yayitali (s / mm);

d: Kutalika kokwanira kapena makulidwe a chogwirira ntchito (mm).

Mu ng’anjo yolimbana ndi bokosi, kutalika kwake kapena makulidwe a workpiece ndi ochepera 100mm, ndipo nthawi yotentha yotentha yotentha ndi 25-30s/mm;

M’mimba mwake kapena makulidwe a chogwiriracho ndi chachikulu kuposa 100mm, ndipo kutenthetsa kwanthawi yayitali ndi 20-25s/mm.

Kuwerengera nthawi yotentha yofulumira molingana ndi ndondomeko yomwe ili pamwambayi, yomwe iyenera kusinthidwa moyenera malinga ndi kutentha kwa ng’anjo yotsimikizika ndikutsimikiza pambuyo podutsa ndondomekoyi.

(2) Zigawo zikapangidwa m’magulu, kuwonjezera pa kuwerengera zomwe zili pamwambapa, nthawi yotenthetsera yofulumira iyenera kuwonjezeredwa molingana ndi voliyumu ya ng’anjo yoyikidwa (m), kachulukidwe ka ng’anjo ndi njira yoyika:

Pamene m＜1.5kg, palibe nthawi yowonjezeredwa;

Pamene m = 1.5 ~ 3.0kg, onjezani 15.30s;

Pamene m=3.0～4.5kg, owonjezera 30～40s;

Pamene m=4.5~6.0kg, onjezani 40～55s.