Inshila iyaonaika iya kupanga foam
The lost foam casting process can be traced back to April 15,1958, the American scholar H.F. Shruyer It was patented for casting using foam models until the summer of 1990, when the 11th chapter of the American Foundry Society officially named it after the new process. The name "disappear model" is good, because these amashiwi yatatu yapilibulwa pa kuti twishibe ubutungulushi ne fyaba mu kuloba ifya kuluba(7{7}
Mu nshita ya kulanshanya pa lwa "inshila ya kukanamoneka", ifunde lya kubalilapo ilya kuti inshila ya kuloba iya kuloba ifwile ukukonkwa: inshila ya kuleshamo ukubola ifwile ukupanga ukutenta kwakulisha ukwabula imibele ya oxygen, pakuti umusango wa foam kuti waonaika ukupitila mu kusansabikamo(Icipendo ca {0} Nga te kuti ucite ubufuuke ubukulu ukwabula imibele ya oxigen, ukucepelwa kwa fipe mu cibumbwa cakolelwe, ukupanga umulilo, ukukaba ukwa maka, ukupanga umulilo, ukubola kwa maka. umuseko{icisuma_} Eico kuti wacingililwa ku filubo fya carbon{2} Pa kupanga ukutenta ukwakulisha ukwabula imibele ya mwela wa mwela kuti wabomfya inshila ya kucingililamo umulilo iyashibomba, pakuti amaka ya mubili ayabipa aya kucincimusha mu nshila ya kupongolwelamo umulilo taukwetemo umwela wa mwela uukwetemo umwela uukwetemo umupashi wa mwela(3 {3
In the process of discussing the "disappearance time", we realized that the disappearance die casting is the replacement of the liquid metal to the foam model, and summarized the second basic principle that must be followed: conditions must be created to balance the disappearance speed of the foam and the filling speed of the liquid metal. If the filling rate of liquid metal is faster than the gasification rate of foam, the liquid contraction of liquid metal is buried, then the stomatal defect may cicitika(11)} Ukupongolwela kwa bwangu bwangu ukwa kufwa kwa kufwa kwa mubili te kwa bwangu, ukulingana na imibele ya musango wa foamdi{2}} Amafupa ya cibumba kuti yaiswilwa bwangu, kabili ifiputulwa fyabikwa mu cifulo calungama nga fintu cingacitika nga fintu cingacitika ukucila(4)}
Ukulanshanya mu nshila ya "kufumyapo", ukupitila mu foam umupwilapo, ukukanaleka ukusambilila kwa mibele yapwa, ukubika "amakumi yatatu ayacepako ayalenga 3 ayapuutwamo" ukucimfya ukufuusha kwa foam iyaonaika, ekutiila: bomfyeni foam iyacepa, ukubomfya kwa menshi ukwakulisha ukupongolwela bwino, umusango wa menshi uwafiita, umusango wa foam uukafuma mu cibulukutu ica ku numa icaonaika mu nshita ya ku numa iyaonaika mu kuonaika kwa mfwa ukwa ku numa ukwa kupwa. langa(1+}}
