Ịhọrọ nke ziri ezi seramiiki slurry maka ụlọ ọrụ nkedo wax furu efu Arụmọrụ abụghị maka ịgwakọta ntụ ntụ na mmiri—ọ bụ maka ịchịkwa microstructure, mmeghari akụkụ, na iguzosi ike n'ezi ihe nke shei tupu mgbada mbụ nke igwe gbazere agbapụta. Anyị ahụla ọtụtụ ebe a na-emepụta ihe na-ekpochapụ 30% nke ogbe-ọ bụghị site na nkedo nkedo, kama site na shei spalling, elu roughness karịrị Ra 6.3 µm, ma ọ bụ cracking n'oge dewaxing. Ọdịda ahụ na-amalite ogologo oge tupu ọkụ ahụ agbanwuo. Ọ na-amalite site na nhazi slurry, njikwa rheology, na usoro ọzụzụ.
Ihe kpatara arụmọrụ Slurry ji ekwupụta nkedo - Ọ bụghị naanị n'elu elu mechaa
Ọtụtụ ndị injinia na-ewere seramiiki slurry dị ka sistemu ihe nkedo “igbe ojii”. Mana n'ime nkedo itinye ego dị elu-karịsịa maka valves hydraulic, ụlọ mgbapụta, ma ọ bụ cobalt alloy nozzles — slurry bụ oyi akwa arụ ọrụ nke mbụ. Nkesa nha nha ya (nke a na-ahụkarị 0.5-15 µm maka ngwakọta zircon / mullite), ọdịnaya nke siri ike (28-32% maka sistemu ethyl silicate), yana index thixotropic na-ekpebi ozugbo: ike akwụkwọ ndụ akwụkwọ ndụ (> 1.8 MPa tupu ọkụ), egwuregwu ịgbasa ọkụ na usoro wax.<0.3% adabaghị na 150°C), na ihe fọdụrụ ike ọgwụgwụ (<0.05 wt% ntụ mgbe 900 Celsius C). Anyị tụrụ nke a n'ofe mmepụta 47 na-agba ọsọ: mgbe viscosity gafere 18-22 cP na 25 ° C (atụnyere na 100 rpm na Brookfield LVDV-II +), nha nha nha nke 42% gbasasịrị, na ịgbasa akụkụ na bores dị egwu mụbara site na ± 0.05 mm ruo .± 0.13 mm.
Ọ bụ ya mere ụlọ ọrụ ndị dị elu anaghị azụta slurry - ha tozuru ya n'otu ogbe. Ha na-anwale oge gel megide ASTM F2212, nyochaa nkwụsi ike pH n'etiti 2.8-3.4, yana soro ntinye nkwụghachi azụ site na mgbanaka mfu na-agbanye (LOI). Otu European mgbapụta OEM nke anyị kwadoro chọrọ ≤0.8% linear shrinkage na shells a chụpụrụ - a ga-enweta ya naanị site na oke mulite-to-zircon a na-achịkwa yana nhazi oge hydrolysis siri ike. Ọdịbendị “na-anọghị na shelf” anaghị abịarute nke ahụ.
Ụzọ anọ n'ezie na-ada n'ụwa-na otu esi akwụsị ha tupu ha emebie
Okwu slurry anaghị adịkarị eji mkpu ekwupụta onwe ha. Ha na-ama jijiji site na mgbaàmà:
- Ọkpụkpọ mgbawa: Ihe kpatara ya site na ịkwaga ngwa ngwa mmiri n'oge ụgbọ mmiri autoclaving-dobere site na ịhazigharị njupụta nke crosslink na-agbakwunye 0.15-0.25% colloidal silica dị ka onye na-eme mgbanwe netwọk.
- Ngwunye elu na nkedo igwe anaghị agba nchara: Chọpụtara na residual chloride ion (> 50 ppm) na alumina sol binders - edozi ya site na ịgbanwee na-enweghị chloride alumina hydrate dispersions.
- Shell delamination mgbe agbapụ: Ejikọtara ya na nchikota interlayer na-ezughị ezu - edozi ya site na ịmepụta oge nkwụsịtụ (12-18 sk) na iji usoro slurries: akwa mkpuchi mkpuchi (100-200 mesh stucco), ezigbo mkpuchi ihu (325 mesh), na mkpuchi mkpuchi ultrafine (submicron zircon)
- Mfefe n'akụkụ akụkụ nwere obere mgbidi: Nke na-akpata nrụgide ihicha na-ezighi ezi—nke a na-ebelata site na ọnụ ụlọ ihicha nke iru mmiri na-achịkwa (45–55% RH, 22–25°C) yana mkpọmkpọ ọsọ ikuku.
Anyị nyeere onye ahịa ndịda Ebe Ọwụwa Anyanwụ Eshia aka belata arụ ọrụ metụtara shei site na 19% ruo 2.3% n'ime izu isii - ọ bụghị site n'ịgbanwe ndị na-ebubata ya, kama site na ịwụnye viscometers inline na tankị ha na-emekọ ihe na-agụ na data CMM na nkedo ikpeazụ. Ọnụọgụ njikọ? 0.87.
Kedu ezigbo onye mmekọ slurry ceramik na-enyefe - gafere bọket ahụ
A pụrụ ịdabere na ya seramiiki slurry maka ụlọ ọrụ nkedo wax furu efu Onye mmekọ na-eme ihe atọ ọtụtụ ndị na-ere ahịa agaghị:
- Na-ekerịta akwụkwọ teknụzụ zuru oke: Ọ bụghị naanị SDS mpempe akwụkwọ — kama urughuru size histograms, XRD usoro akụkọ, na binder hydrolysis kinetics charts
- Na-akwado arụmọrụ na geometry gị: Na-agba ọsọ nnwale n'ụdị wax gị n'ezie, tụọ nha nha nha nha yana nyocha nke dị ugbu a, yana mekọrịta nsonaazụ ya na nkọwapụta ọla gị lekwasịrị anya (dịka, ihe achọrọ nha ọka AMS 5387)
- Na-ejikọta na njikwa usoro gị: Na-enye data ndakọrịta slurry maka ihe stucco gị dị ugbu a, paramita okirikiri na-emebi emebi, yana profaịlụ agbapụ - enweghị ịkọ nkọ na ọnụego rampụ ma ọ bụ oge njide.
Ọkwa nke njikọta a na-ekewa ndị na-eweta ngwaahịa na ndị mmekọ injinia. Ọ bụ ya mere ndị na-emepụta ihe dị ka QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD - nke na-emepụta akụkụ mgbapụta cobalt alloy na-achọsi ike. efu porosity nke ime na ± 0.03 mm nwere ndidi—chọrọ traceability slurry ruo ọnụ ọgụgụ nza, gụnyere asambodo nyocha nke akụrụngwa yana akụkọ ihe ngbanwe nke ndị ọzọ.
Na-ele anya n'ihu: Slurry ọgụgụ isi abụghịzi nhọrọ
Mpaghara na-esote abụghị naanị kemịkalụ ka mma - ọ bụ nzaghachi ozugbo. Ugbu a, anyị na-ebuga tankị slurry nwere IoT nke na-enyocha ọnọdụ okpomọkụ, viscosity na pH kwa sekọnd 90 ọ bụla, na-emezi ihe mgbakwunye akpaaka site na nfuli peristaltic jikọtara PLC. Ndị nkuchi mbụ na-akọ 37% NCR ndị metụtara shea na 22% ngwa ngwa ntozu ezinaụlọ alloy ọhụrụ (dị ka T800 cobalt superalloys).
Mana naanị teknụzụ agaghị edozi isi adịghị ike. Malite ebe a: nyochaa njikwa slurry gị ugbu a. Ị na-atụ viscosity kwa ụbọchị - ma ọ bụ naanị "ịlele nkwụsi ike"? Ị na-abanye n'akụkụ nrụgide nrụgide n'akụkụ mbelata ibu ibu? A na-akwado nkesa stucco gị na ISO 13320? Ọ bụrụ na azịza ọ bụla bụ “Ee e,” ebe ahụ ka mwepu mkpụrụ na-amalite.
N'ihi na n'ime nkedo nke ọma, slurry abụghị naanị na-ekpuchi ụkpụrụ ahụ. Ọ na-akọwa oke n'etiti ihe ịga nke ọma na mkpofu-otu micron n'otu oge.
