Isishwankathelo seValve Casting

1. Yintoni ukuphosa

Isinyithi esilulwelo sigalelwa kwingxobo yesikhunta enomfanekiso ofanelekileyo kuloo ndawo, kwaye emva kokuba iqine, kufunyanwa imveliso eyinxalenye enomfanekiso othile, ubungakanani kunye nomgangatho womphezulu, obizwa ngokuba yi-casting. Izinto ezintathu eziphambili: i-alloy, i-modeling, i-pouring kunye ne-solidification. Eyona nzuzo inkulu: iindawo ezintsonkothileyo zinokwenziwa.

2. Uphuhliso lokwenziwa kwesamente

Imveliso yaqala ngeminyaka yoo-1930 kusetyenziswa oomatshini bomoya kunye neenkqubo zesanti yodongwe eyenziweyo.

Uhlobo lwesanti yesamente lwavela ngo-1933

Ngo-1944, kwavela uhlobo lwegobolondo lesanti ye-resin eqinileyo neqinileyo.

I-CO2 eyenziwe ngeglasi yamanzi eqinileyo yabonakala ngo-1947.

Ngo-1955, kwavela uhlobo lwegobolondo lesanti ye-resin yokugquma ngobushushu.

Ngo-1958, kwavela isikhunta sesanti esingabhakwanga se-furan resin

Ngo-1967, kwavela isikhunta sesanti esihamba ngesamente

Ngo-1968, kwavela iglasi yamanzi ene-organic hardener

Kwiminyaka engama-50 edlulileyo, iindlela ezintsha zokwenza ii-casting molds ngeendlela ezibonakalayo, ezinje: i-magnetic pellet molding, indlela ye-vacuum sealing molding, i-lost foam molding, njl. Iindlela ezahlukeneyo zokufaka ezisekelwe kwii-metal molds. Ezinje nge-centrifugal casting, i-high pressure casting, i-low pressure casting, i-liquid extrusion, njl.

3. Iimpawu zokuphosa

A. Ukuguquguquka okubanzi kunye nokuguquguquka. Zonke iimveliso zezinto zesinyithi. Ukubumba akuthintelwanga bubunzima, ubungakanani kunye nokuma kwenxalenye. Ubunzima bunokuba ziigram ezimbalwa ukuya kumakhulu eetoni, ubukhulu bodonga bunokuba ukusuka kwi-0.3mm ukuya kwi-1m, kwaye imo ingaba yinxalenye enzima kakhulu.

B. Uninzi lwezinto ezisetyenziswayo eziluhlaza nezincedisayo zifumaneka kakhulu kwaye zingabizi kakhulu, njengentsimbi elahliweyo kunye nesanti.

C. Ii-Casting zinokuphucula ukuchaneka kobukhulu kunye nomgangatho womphezulu wee-castings ngokusebenzisa ubuchwepheshe obuphambili boku-cast, ukuze iinxalenye zinqunyulwe kancinci kwaye zinganqunyulwa.