1. Nea ɛyɛ casting
Wɔhwie dade a ɛyɛ nsu no gu nkuku mu a ne nsusuwii fata ɔfã no mu, na sɛ ɛyɛ den wie a, wonya ɔfã bi a ɛwɔ nsusuwii pɔtee bi, ne kɛse ne ne soro su pɔtee bi, a wɔfrɛ no casting. Nneɛma atitiriw abiɛsa: alloy, modeling, hwie ne solidification. Mfaso kɛse a ɛwɔ so: wobetumi ayɛ afã horow a ɛyɛ den.
2. Nkɔso a ɛfa casting ho
Wofii ase yɛɛ nneɛma wɔ 1930 mfe no mu denam mfiri a mframa wom ne dɔte anhwea a wɔde ayɛ nneɛma so.
Cement anhwea type puei wɔ 1933 mu
Wɔ 1944 mu no, resin anhwea akorade a ɛyɛ nwini a wɔde akata so denneennen no puei
CO2 a ɛyɛ den nsu ahwehwɛ anhwea nkuku puei wɔ 1947 mu
Wɔ 1955 mu no, thermal coating resin sand shell type no puei
Wɔ 1958 mu no, furan resin no-bake sand mould no puei
Wɔ 1967 mu no, semɛnte a ɛsen anhwea nkuku no puei
Wɔ 1968 mu no, nsu ahwehwɛ a ɛwɔ organic hardener puei
Wɔ mfeɛ aduonum a atwam no mu no, akwan foforɔ a wɔfa so yɛ casting nkukuo denam honam fam akwan so, te sɛ: magnetic pellet molding, vacuum sealing molding kwan, lost foam molding, ne nea ɛkeka ho Akwan ahodoɔ a wɔfa so tow nkukuo a egyina dadeɛ nkukuo so. Te sɛ centrifugal casting, nhyɛso kɛse casting, nhyɛso a ɛba fam casting, nsu extrusion, ne nea ɛkeka ho.
3. Nneɛma a ɛwɔ casting mu
A. Wide nsakrae ne nsakrae. Nneɛma a wɔde yɛ dade nneɛma nyinaa. Ɛnyɛ ɔfã no mu duru, ne kɛse ne ne nsusuwii na ɛto casting ano hye. Ne mu duru betumi afi gram kakraa bi akosi tɔn ɔhaha pii, ɔfasu no mu duru betumi afi 0.3mm kosi 1m, na ne nsusuwii betumi ayɛ afã horow a ɛyɛ den yiye.
B. Nneɛma a wɔmfa nhyehyɛ mu ne nea ɛboa a wɔde di dwuma no mu dodow no ara fi mmeae pii na ne bo nyɛ den, te sɛ dade a wɔabubu ne anhwea.
C. Castings betumi ama castings no dimensional pɛpɛɛpɛ ne surface quality atu mpɔn denam casting mfiridwuma a ɛkɔ anim so, sɛnea ɛbɛyɛ a wobetumi atwitwa afã horow no kakraa bi na wɔrentwitwa.
Bere a wɔde bɛkyerɛw: Aug-11-2022
