precise vehicle Si3N4 silicon nitride ceramic piston cylinder sleeve
La réputation dépend de la qualité, la qualité provient durement!
Silicon Nitride Ceramic:
Burning solid matter
Evaporation, concentration or crystallization of the solution (if there is an evaporating dish, the evaporating dish should be selected. Of course, the crucible can also be used for the evaporation, concentration or crystallization of the solution)
Précautions d'emploi
Can be directly heated, and can not be quenched after heating, use crucible tongs to remove
When the crucible is heated, put it on the mud triangle and stir it when it evaporates; when it is nearly dry, use the waste heat to evaporate it.
Crucibles can be divided into three categories: graphite crucibles, clay crucibles and metal crucibles.
Among the graphite crucibles, there are three kinds of general graphite crucibles, special-shaped graphite crucibles, Ceramic Tubes and high-purity graphite crucibles. Various types of graphite crucibles have Silicon Nitride Parts different raw materials, production methods, process technologies, and product specifications due to their different properties, uses and conditions of use.
The types of crucibles are roughly divided into three categories: the first type of copper smelting crucibles, its specifications "number"; the second type is copper alloy crucibles, the special round has 100 numbers, the round has 100 numbers, the third There are 100 crucibles for steelmaking. Crucible specifications (size) are usually expressed by the size of the serial number. Crucible No. 1 has the capacity to melt 1000g of brass, and its weight is 180g. The melting amount of the crucible when smelting different metals or alloys can be calculated by multiplying the corresponding metal and alloy Silicon Nitride Ceramic Pin coefficient by the specific weight of the crucible. Crucible production materials can be summarized into three types. One is crystalline natural graphite, and the other is plastic refractory. Nickel crucible is suitable for NaOH Na2O2, Na2CO3, NaHCO3 and alkaline solvents containing KNO3 to melt samples. It is not suitable for KHSO4 or NaHS04, K2S2O7 or Na2S2O7 and other acidic solvents and sulfur-containing alkaline sulfide flux melting samples.
Propriétés :
High hardness, high strength, wear resistance, corrosion resistance, high temperature(1200 ° ), good thermal diffusivity, good thermal shock resistance(avoid the temperature changing rapidly), good insulativity, low density. The comprehensive properties are best in most of structure ceramic.
Fiche technique ↓
Color: Black Grey
Density: ＞3.2g/cm3
Hardness: HRA90
Vickers Hardness (Hv50): ＞1550 HV0.5
Modulus of Elasticity: 290Gpa
Flexural Strength: ＞600Mpa
Compressive Strength: 2500Mpa
Modulus of Elasticity(25°C): 65Gpa
Fracture toughness:＞6.0 Mpam1/2
Maximum Use Temperature: 1200°C
Thermal Conductivity:15-20 W(mK)
Thermal Expansion Coefficient: ＞3.1 10-6/°C
Thermal Shock Resistance: 500 △T°C
Special Heat Capacity: 700 KJ/kg.K
Dielectric Strength: 1 KV/mm
Dielectric Constant: er
Volume Resistivity(20°C): 1.0*10(12)Ω.cm
Application industry :
Machinery, electronic, semiconductor, chemical, petroleum, smelt.
Application spécifique:
Welding shaft, electronic substrate, plunger, nozzle, slide guide, diesel parts, metal molding, shaft wheels etc.
Pourquoi nous choisir? 1,12 ans de production professionnelle industrielle en céramique 2. Produits de qualité élevée à bas prix 3. principales pièces de précision avec une tolérance la plus basse 4.Short time for production 5.has un groupe d'équipe de R&D expérimentée, professionnelle et efficace 6. a une bonne réputation en Chine et à l'étranger. 7.MOQ n'est pas limité, la petite quantité est la bienvenue.
8. Équipe vigoureuse et bon service après-vente
Spectacle de produits
FAQ
Q: Êtes-vous une entreprise ou un fabricant commercial?
R: Nous sommes une usine.
Q: Combien de temps dure votre délai de livraison?
R: Généralement, c'est 5 à 10 jours si les marchandises sont en stock. ou il fait 15 à 30 jours si les marchandises ne sont pas en stock, c'est selon la quantité.
Q: Fournissez-vous des échantillons? Est-ce gratuit ou supplémentaire?
R: Oui, nous pourrions offrir l'échantillon pour des frais gratuits, mais ne payez pas le coût du fret.
Q: Quelles sont vos conditions de paiement?
R: Paiement <= 1000USD, 100% à l'avance. Paiement> = 1000USD, 50% T / T à l'avance, solde avant Shippment.
