Foornada iska caabinta nooca sanduuqa habka dejinta cabbirka

1. Go’aaminta heerkulka foornada

Marka kuleylka degdega ah loo isticmaalo foornada sanduuqa, nolosha adeegga ee siliga iska caabinta ayaa la tixgeliyaa. Guud ahaan, heerkulka foornada waxaa la dhigayaa at 920 ~ 940 ℃ (silig iska caabin ah oo ka samaysan walxaha chromium-nickel), 940 ~ 960 ℃ (silig iska caabin ah oo ka samaysan bir-chromium-aluminium wax) ama 960 ～980 ℃ waa walxo ka kooban qaybaha daawaha sida niobium iyo molybdenum).

2. Go’aaminta qadarka foornada lagu rakibay

Qadarka foornada lagu rakibay guud ahaan waxaa lagu go’aamiyaa iyadoo loo eegayo awoodda foornada iyo aagga isticmaalka. Mabda’a ayaa ah: dusha sare ee derbiga foornada ee qaybta ugu horeysa ee workpieces ayaa gaadhay heerkulka la cayimay ka hor inta aan la rakibin foornada, iyo heerkulka foornada ayaa si dhakhso ah ugu soo laaban kara heerkulka la cayimay ka dib rakibid kasta. Haddii culeyska foornada uu aad u weyn yahay oo uusan u dhigmin awoodda foornada, heerkulka foornada lama soo celin doono muddo dheer, taas oo saameyn doonta saxnaanta xisaabinta wakhtiga. Wax-soo-saarka ballaaran, waxaa loo “yareyn karaa qaybo” waxaana si joogto ah loogu sameeyaa kooxo.

3. Go’aaminta wakhtiga kuleylka

Waqtiga kuleylka degdegga ah waxaa guud ahaan loo xisaabiyaa iyadoo loo eegayo cabbirka wax ku oolka ah ee qaybta iskutallaabta shaqada, waxaana lagu go’aamiyaa iyadoo loo eegayo xaaladda dhabta ah iyo waayo-aragnimadii hore:

(1) Waqtiga kuleylka degdegga ah ee hal gabal waxaa loo xisaabin karaa sida soo socota:

t=ad

Halka t: wakhtiga kululaynta degdega ah (s);

a: Isku-xidhnaanta wakhtiga kuleylka degdega ah (s/mm);

d: Dhexroorka waxtarka leh ama dhumucda qalabka shaqada (mm).

Foornada iska caabbinta nooca-sanduuqa ah, dhexroorka waxtarka leh ama dhumucdiisuna waxay ka yar tahay 100mm, iyo wakhtiga kuleylka degdegga ah ee isku-dhafka ah waa 25-30s / mm;

Dhexroorka wax ku oolka ah ama dhumucdiisuna waxay ka weyn tahay 100mm, iyo wakhtiga kulaylka degdega ah isku dhafka ah waa 20-25s/mm.

Xisaabi wakhtiga kululaynta degdega ah sida waafaqsan qaacidada sare, taas oo ah in si habboon loo hagaajiyo iyada oo loo eegayo heerkulka foornada ee la go’aamiyey oo la go’aamiyo ka dib marka la gudbiyo xaqiijinta habka.

(2) Marka qaybo lagu soo saaro dufcooyin, marka lagu daro xisaabinta caanaha kor ku xusan, wakhtiga kululaynta degdega ah waa in lagu daraa iyadoo loo eegayo mugga foornada lagu rakibay (m), cufnaanta foornada iyo habka meelaynta:

Marka m＜1.5kg, waqti laguma daro;

Marka m= 1.5～3.0kg, ku dar 15.30s;

Marka m=3.0～4.5kg, 30-40s dheeraad ah;

Marka m=4.5～6.0kg, ku dar 40-55s.