Foam casting nhyehyɛe a ayera no .
Yebetumi ahu foam casting nhyehyɛe a ayera no afi April 15,1958, Amerikani nhomanimfo HF Shruyer Ɛyɛ patented ma casting a wɔde foam models di dwuma kosii 1990 ahohuru bere mu, bere a Amerika Foundry Society ti a ɛto so 11 no too din wɔ aban kwan so wɔ nhyehyɛe foforo no akyi. Edin "Disappear Model" no ye, ɛfiri sɛ wɔdane nsɛmfua mmiɛnsa yi de te akwankyerɛ ne emu nsɛm a ɛwɔ die casting a ɛyera no ase. Dishing die casting yɛ sɛ wobɛsua "diespakeance" a ɛwɔ "wu", disradiseance mode, bere ne dodow a die.
Wɔ adeyɛ a ɛne sɛ wɔbɛka "discaparance mode" ho asɛm no mu no, nnyinasosɛm titiriw a edi kan a ɛne sɛ ɛsɛ sɛ wodi ayera kwan a wɔde gu mu no akyi: ɛsɛ sɛ disporiseance mode casting no ma ɔhyew a ɛkɔ soro a oxygen tebea biara nni mu, sɛnea ɛbɛyɛ a foam mode a ɛwɔ cavity no mu no betumi ayera denam gasfifial so. Sɛ worentumi nyɛ ɔhyew a ɛkɔ soro a oxygen tebea biara nni mu a, ɛsɛ sɛ wɔhyew foam mold a ɛwɔ abura no mu no, ɛma ɛyɛ hyew koraa, nneɛma a ɛhyew no na ama afiri no afi hɔ. Enti wubetumi akwati carbon sintɔ ahorow. Sɛnea ɛbɛyɛ a ɔhyew a ɛkɔ soro a oxygen tebea nnim no betumi de mframa a ɛbɔ ho ban a ɛnyɛ adwuma adi dwuma, sɛnea ɛbɛyɛ a nhyɛso bɔne a ɛtwetwe wɔ ade a wɔde hwie gu no mu no, oxygen nni mu.
Wɔ adeyɛ a yɛreka "bere a ayera" ho asɛm no mu no, yehui sɛ die casting a ɛyera no yɛ dade a ɛyɛ nsu a wɔde besi foam nhwɛso no ananmu, na yɛabobɔ nnyinasosɛm titiriw a ɛto so abien a ɛsɛ sɛ wodi akyi no so: ɛsɛ sɛ wɔyɛ tebea horow a ɛbɛma ahuru ahoɔhare a ɛwɔ ahurututu no mu ne ahoɔhare a wɔde hyɛ nsu a ɛyɛ nsu no mu no ayɛ pɛ. Sɛ dade a ɛyɛ nsu a wɔde hyɛ mu no yɛ ntɛmntɛm sen mframa a ɛwɔ ahurututu mu no dodow a, nsu a ɛtwetwe nsu a ɛyɛ nsu no sie, ɛnde stomatal sintɔ no betumi aba. Ahoɔhare a ɛreyera a ɛma die casting no yera no nyɛ ntɛmntɛm dodow no ara na eye, sɛnea tebea pɔtee a ɛwɔ foam no mu te no. Wobetumi ahyɛ ɔfasu no afã horow a ɛyɛ teateaa no ma ntɛmntɛm, na ɛsɛ sɛ asinasin a ɛyɛ den na ɛsõ a wɔde si baabi a ɛteɛ no ma ahoɔhare a wɔde hyɛ mu no yɛ brɛoo sɛnea wobetumi.
Nkɔmmɔbɔ wɔ adeyɛ a ɛne "disappear", ɛnam foam no so koraa, gyae trace a ɛyera tebea ho adesua, fa "a low two three breathable" direspose die casting foam disappear legacy formula, a ɛne sɛ: Fa low density foam di dwuma, nsu a ɛyɛ hyew a ɛkɔ soro a ɛyɛ nsu a wɔde hwie gu, coating transparent performance tebea pa, foam no bɛyera koraa na annyaw hwee. Wobetumi akyerɛkyerɛ sintɔ soronko a ɛwɔ die casting a ɛyera mu no mu sɛ traces a wogyaw wɔ foam model no yera mu.
