Mfiridwuma a wɔde yɛ dɔte anhwea ho adwuma

Mfiridwuma a wɔde yɛ dɔte anhwea ho adwuma
Mfiridwuma a wɔde yɛ dɔte anhwea no yɛ anammɔn titiriw a wɔfa so yɛ nneɛma a wɔde gu mu no mu, na ɛka nneɛma a wɔde gu no yiyedi, ɛka a wɔbɔ wɔ nneɛma a wɔyɛ ho, ne nneɛma a atwa yɛn ho ahyia ho banbɔ so nkɛntɛnso tẽẽ. Nea edidi so yi de nnianim asɛm a wɔahyehyɛ na ɛkɔ akyiri ma wɔ saa mfiridwuma yi ho. Botae titiriw
Wɔbɛyɛ anhwea a wɔde adi dwuma ne dedaw (a dɔte a adi nkogu, fango powder, efĩ, ne nea ɛkeka ho wom) ho adwuma de asan ayɛ ne su, na afei wɔde anhwea foforo, binder (dɔte a ɛyɛ kɛse), ne nneɛma a wɔde ka ho (fango powder, ne nea ɛkeka ho) afra mu de asiesie anhwea foforo a ɛne nwene ahwehwɛde ahorow hyia. Eyi yɛ adeyɛ a wɔsan de di dwuma bio.
Adeyɛ a ɛsen ho mfonini (closed-loop cycle) .
Sanding → Crushing → Magnetic separation → Screening → (Anhwea dedaw a wɔma ɛyɛ nwini ne nea wɔde di kan-sa) → Anhwea a wɔsan yɛ bio (key stage) → Anhwea foforo/nneɛma a ɛboa a wɔde bɛka ho → Anhwea a wɔadi afra → Molding sand performance testing → Molding use
Nkyerɛkyerɛmu a ɛkɔ akyiri a ɛfa adeyɛ biara ho
1. Ansa na-ayaresa no fã
Ansa na anhwea dedaw no bɛhyɛn regeneration core no mu no, ɛsɛ sɛ wosiesie.
Sanding ne crushing: Tetew castings a ayɛ nwini no mu denam hwie a wobɛhwie afi anhwea nkuku no mu so, na wɔabubu anhwea akɛse.
Magnetic separation: Fa magnetic separation mfiri (magnetic drum, belt) yi dade bankye, dade nnadewa, ntwea a ɛtu ne burrs, ne nea ɛkeka ho a ɛyɛ ferromagnetic wɔ abɔde mu, bɔ nnwinnade a edi hɔ no ho ban.
Screening: Yi core bones, wood blocks, sand blocks, ne nea ɛkeka ho a ɛnyɛ-magnetic denam vibrating screen anaa multi{2}}angle screen a wode bedi dwuma so.
2. Anhwea dedaw a wɔma ɛyɛ nwini ne nea wɔde di kan{1}}sa (key stage) .
Anhwea dedaw no hyew taa yɛ digrii 80-120 . Anhwea a ɛyɛ hyew kɛse betumi de ɔhaw pii aba (nwinnade a ɛbata ho, nsu a ɛyɛ hyew, ɛka anhwea a wɔadi afra no su). Akwan a wɔfa so ma onwini:
Vibrating boiling cooling bed: Nea ɛtaa ba na ɛyɛ adwuma yiye sen biara. Wɔbɔ mframa kɔ mu, na anhwea no wɔ tebea a ɛrefɔw mu wɔ mprɛte a ɛwosow no so, bere a ɛyɛ nwini na eyi mfutuma bi fi hɔ no.
Double-disc cooler: Wɔde onwini a ɛnam stirring ne mframa so di dwuma, na ɛsan nso wɔ pre-mixing function.
Rolling cooling machine: Onwini a ɛnam mframa a ɛma onwini ne nsuo a ɛyɛ nsuo a ɛyɛ nwini so wɔ roller a ɛkyinkyini mu.
3. Anhwea a wɔsan yɛ foforo (core stage) .
Botae no ne sɛ wobeyi dɔte film (dɔte a awu) a adi nkogu wɔ anhwea no ani no afi hɔ, na ɛno ne ade titiriw a ɛbɛma anhwea no su ahorow asan aba. Sɛnea ahoɔden a ɛsan yɛ no te no, wɔakyekyɛ mu ayɛ no:
First-level regeneration (basic regeneration): Yi dɔte a adi nkogu no fã bi pɛ denam friction so. Nneɛma a wɔtaa de di dwuma: Centrifugal rotor regeneration machine. Wɔde ahoɔden petepete anhwea no so na ɛbɔ rotor a ɛkyinkyini ne liner plate no ntam, na ɛma dɔte film no tew. Ɛfata ma adwumayɛbea nketewa-a a ɛnyɛ den pii a wɔde gu casting adwumayɛbea ahorow.
Nea ɛto so abien-level regeneration (powerful regeneration): Gyina nea edi kan-level friction regeneration so no, fa impact anaa grinding ka ho.
Mframa a ɛsen no nkɛntɛnsoɔ foforɔ: Fa mframa a ɛsen ntɛmntɛm-di dwuma de ma anhwea nketenkete no yɛ ntɛmntɛm na ɛbɔ mprɛte a wɔde asi wɔn ani so no, na ɛde stripping effect a ɛyɛ papa ba.
Mfiri a ahoɔden wom a wɔde san yɛ foforo: Te sɛ mfiri a wɔde san yɛ foforo a ɛda hɔ anaa ɛda fam, a ɛka friction, impact ne grinding bom.
Anhwea a wɔasan ayɛ no foforo-level no wɔ su a ɛkorɔn na wobetumi de ayɛ anhwea a ɛyɛ den anaasɛ sɛ anhwea a ɛwɔ soro.
4. Mframa a wɔpaapae mu ne mfutuma a woyi fi hɔ
Mframa a wɔpaapae mu: Anhwea a wɔasan ayɛ no foforo no hyɛn afiri a wɔde yi mframa mu no mu, na ɛde mframa a ɛsen di dwuma de yi powder fɛfɛ (titiriw dɔte a awu ne fango powder nsõ) fi anhwea mu nneɛma nketenkete a ɛfata no mu.
Mfutuma a woyi fi hɔ: Wɔde mfutuma a woyi fi mfinimfini a ano yɛ den ahyɛ nhyehyɛe no nyinaa mu, na ɛboaboa mfutuma a ɛba mmeae ahorow ano de hwɛ hu sɛ wɔbɔ nneɛma a atwa yɛn ho ahyia ho ban na adwumayɛbea ahorow no ho tew.
5. Anhwea ne nneɛma a wɔde afrafra
Fa anhwea a wɔasan ayɛ no foforo, anhwea foforo a wɔde ka ho (bɛyɛ 5-15%), bentonite (dɔte), fango powder (anaasɛ nneɛma afoforo a wɔde carbonaceous afra mu), ne nsu fra pɛpɛɛpɛ.
Nnwinnade titiriw: Mikyer a ɛkyinkyini (etu mpɔn, ɛyɛ pɛ).
Control core: Online anhwea adwumayɛ sɔhwɛ adwinnade (te sɛ compactness rate, nsuo a ɛwɔ mu, ahoɔden controller), nsakraeɛ wɔ nsuo a wɔde ka ho dodoɔ ne aboafoɔ nneɛma a wɔde ka ho dodoɔ wɔ berɛ ankasa mu a egyina sɔhwɛ no mu aba so na ama wɔanya closed-loop automatic control.
6. Anhwea homogenization ne akwantuo
Ɛsɛ sɛ wogyaw anhwea a wɔde afrafra a wɔde yɛ nkuku no ma ɛyɛ pɛ (ma nsu no kɔ mu pɛpɛɛpɛ) na afei wɔde fa abɔso anaa mframa a wɔde fa nneɛma mu kɔ adwumayɛbea a wɔde nwene nneɛma kɔ no.
Adeyɛ no su ne nea wɔpaw
Sɛnea nneɛma a wɔyɛ ne anhwea a wɔhwehwɛ kyerɛ no, akwan abien titiriw na ɛwɔ hɔ a wɔfa so hyehyɛ nneɛma:
Centralized processing system: Ɛfata ma akɛse-scale, biako-adeyɛ nneɛma a wɔyɛ (te sɛ kar castings). Anhwea dedaw nyinaa yɛ centralized processed, a compact process ne automation a ɛkorɔn, na ɛyɛ mmerɛw sɛ wɔbɛhwɛ so.
Unit processing system: Ɛfata ma multi-variety, nketewa-batch adwumayɛbea (te sɛ mfiri nnwinnade, mfiri a emu yɛ duru a wɔde gu mu). Wɔde anhwea a wɔde yɛ nneɛma a ɛde ne ho ahyɛ nhama a wɔde yɛ nneɛma biara mu, a ɛtumi sesa mu denneennen na biribiara ntwitware mu.
Mfiridwuma ho nsɛnkyerɛnne titire ne ne su pa a wɔhwɛ so Bentonite dodow a etu mpɔn ne fango mu aduru a etu mpɔn: Ɛho hia sɛ wɔsɔ hwɛ daa (te sɛ methylene blue titration kwan), de kyerɛ bentonite ne fango powder foforo dodow a wɔde bɛsan ahyɛ mu ma no kwan.
Atɛkyɛ a ɛwɔ mu (powder pa a ɛwɔ mu): Ɛsɛ sɛ wɔhwɛ so wɔ fam 12%-16%, ɛfiri sɛ dodoɔ a ɛboro soɔ no bɛka anhwea a wɔde yɛ nwene no adwumayɛ.
Loss on ignition: Ɛda nneɛma a ɛhyew nyinaa adi wɔ molding sand no mu, na ɛsɛ sɛ wɔhwɛ so wɔ ase 3%-5%.
Particle size distribution: Kɔ so gyina pintinn na ama woahwɛ ahu sɛ透气性和 ani awie molding anhwea no.
Nsuo a ɛwɔ mu: Wɔtaa di so wɔ 2.0%-3.5%, a ɛyɛ "ɔkra" a ɛwɔ anhwea a wɔreyɛ no mu na ɛhia sɛ wɔhwɛ so pɛpɛɛpɛ.
Compaction rate: Online control parameter a ɛyɛ mmerɛw sen biara, a ɛkyerɛ dry-wet ne viscosity tebea a anhwea no wɔ, mpɛn pii no wɔhwɛ so wɔ 35%-45%.
Nkɔso a ɛkɔ so
Intelligentization ne big data: Wɔde sensors ne Internet of Things mfiridwuma di dwuma, real-bere a wɔhwɛ so wɔ process parameters nyinaa so, denam big data nhwehwɛmu so de kyerɛ sɛnea molding sand no te, na wonya preventive maintenance ne optimal control.
Adwumayɛ a ɛyɛ adwuma yiye ne ahoɔden a wɔkora so: Nnwinnade renya nkɔso akɔ akɛse-ayɛ kɛse, ahoɔden a wɔmfa nni dwuma pii, ne nea ɛnsɛe pii. Ɔhyew a wɔsɛe no a efi anhwea a ɛyɛ hyew mu a wɔde di dwuma.
Nneɛma a atwa yɛn ho ahyia ho banbɔ a ɛkɔ anim: Gyinapɛn a wɔde boaboa mfutuma ne mframa a wɔtwe fi mu (te sɛ VOC) ano na wɔde yɛ ho adwuma no reyɛ katee kɛse.
Nsakraeɛ: Unitized ne modular design, a ɛdannan sɛdeɛ gua so ahwehwɛdeɛ ma ahodoɔ pii ne batch nketewa. Tɔfabɔ
Mfiridwuma a wɔde yɛ dɔte anhwea yɛ nhyehyɛe a ɛyɛ den a ɛka mfiridwuma, nsu, automation control ne nneɛma ho nyansahu bom. N'adwene titiriw ne "sikasɛm a ɛyɛ kurukuruwa", a ne botae ne sɛ ɛbɛtew anhwea foforo a wɔde di dwuma ne nwura a ɛyɛ den a wɔtow gu no so denam nneɛma a wɔsan yɛ no yiye so.