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Spherical Ceramic ájá maka ntọala ntọala

Nkọwa dị mkpirikpi:

Akara Ceramic Foundry, nke akpọrọ aha ya dị ka “Sintered Ceramic Sand for Foundry”, akpọkwara ya dị ka ceramsite, ceramcast, bụ ezigbo ọka okirikiri nke emere site na bauxite calcined. Isi ọdịnaya ya bụ aluminum oxide na Silicon oxide. Aja ceramic, nwere ihe dị mma karịa nke ájá silica iji nweta arụmọrụ dị mma na ebe a na-emepụta ihe. Ọ nwere nnukwu refractoriness, obere mgbasawanye thermal, ezigbo ọnụọgụ angular, ọmarịcha mmiri na-efe efe, nnukwu iguzogide iyi, nchipịa na ujo thermal, ọnụ ọgụgụ dị elu.

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Nkọwa ngwaahịa

Mkpado ngwaahịa

Ihe onwunwe seramiiki

Ihe mejupụtara kemịkalụ bụ isi	Al₂O₃≥53%, Fe₂O₃＜4%, TiO₂＜3%, SiO₂≤37%
Ụdị ọka	Spherical
Ọnụ ego angular	≤1.1
Akụkụ akụkụ	45μm -2000μm
Refractoriness	≥1800℃
Njupụta nnukwu	1.5-1.6 g/cm3
Mgbasa ọkụ (RT-1200℃)	4.5-6.5x10-6/k
Agba	Aja
PH	6.6-7.3
Ihe mejupụtara mineral	Dị nro + Corundum
Ọnụ ego acid	＜1 ml/50g
LOI	0.1%

Uru

● Aja akwụkwọ ndụ akwụkwọ ndụ. Nchekwa gburugburu ebe obibi ma e jiri ya tụnyere silica (silicosis) na ájá zircon
● High refractoriness (＞1800°C)，can be used for casting various materials. There is also no need to use different sand type according to material.
● Ọnụ ọgụgụ mweghachi dị elu. Ma Thermal na nrụgharị igwe. Na-enye ogologo ndụ ọrụ yana mbelata ojiji ájá.
● Nnukwu ndakpọ. Udi okirikiri ájá seramiiki gbanyere mkpọrọgwụ ma e jiri ya tụnyere mkpụrụ osisi nwere nkuku na-enye ohere ikewapụ mfe na akụkụ nkedo yana mbelata ndakọrịta na-ebute obere mkpofu na ịrụ ọrụ nkedo.
● Mmiri dị mma na njuputa arụmọrụ n'ihi ịdị okirikiri.
● Lower Thermal Mgbasawanye na Thermal Conductivity. Akụkụ nkedo bụ nke ziri ezi na arụmọrụ dị ala na-enye arụmọrụ ebu ka mma.
● Njupụta dị ala. Dị ka ájá seramiiki wuruwuru dị ihe dị ka ọkara ka ìhè dị ka ájá seramiiki fused (aja ojii ojii), zircon na chromite, ọ nwere ike ịpụta ihe dị ka okpukpu abụọ nke ebu kwa otu nha. Enwere ike ijikwa ya n'ụzọ dị mfe, na-echekwa ọrụ na ịnyefe ego ike. Otú ọ dị, ekwesịrị itinye nlebara anya na ọnụọgụ nke mgbakwunye.
● Achọrọ 40-50% obere resin.
● A na-eji obere ihe kpuchie ihe nkedo ma ọ bụ na-enweghị ihe mkpuchi.
● Enwere ike iji ya mee otu ájá.
● Ọdụdọ kwụsiri ike. Ikike kwa afọ 200,000 MT iji dobe ngwa ngwa ma kwụsie ike.

Ngwa

Dị ka ihe na-anọpụ iche, KAIST seramiiki ájá na-adabara acid na alkali resins.

Enwere ike iji ya mee ihe n'ọtụtụ ebe maka igwe nkedo, ihe nkedo na igwe anaghị agba nchara, dị ka nkedo ụfụfụ furu efu, ájá mkpuchi, aja resin, igbe isi oyi, nkedo ziri ezi, na mbipụta 3D.

Akụkụ nke nkesa nha nha

Enwere ike ịhazi nkesa nha nha dị ka ihe ị chọrọ.

Ntupu		20	30	40	50	70	100	140	200	270	Pan	AFS
μm		850	600	425	300	212	150	106	75	53	Pan
Koodu	20/40	15-40	30-55	15-35	≤5							20±5
	30/50	≤1	25-35	35-50	15-25	≤10	≤1					30±5
	40/70		≤5	20-30	40-50	15-25	≤8	≤1				43±3
	70/40		≤5	15-25	40-50	20-30	≤10	≤2				46±3
	50/100			≤5	25-35	35-50	15-25	≤6	≤1			50±3
	100/50			≤5	15-25	35-50	25-35	≤10	≤1			55±3
	70/140				≤5	25-35	35-50	8-15	≤5	≤1		65±4
	140/70				≤5	15-35	35-50	20-25	≤8	≤2		70±5
	100/200					≤10	20-35	35-50	15-20	≤10	≤2	110±5