polished grinding Silicon Nitride ceramic step tube bush
Reputation depends on quality, quality comes from Hard!
Silicon Nitride Ceramic:
Stretching is to apply a tensile force to the sheet by the stretch die, which causes the sheet to produce uneven tensile stress and tensile strain, and then the mating surface of the sheet and the stretch die gradually expands until it is fully fitted with the stretch model surface. The applicable object of stretch is to manufacture hyperbolic skins with certain plasticity, large surface area, gentle and smooth curvature changes, and high quality requirements (accurate shape, smooth streamline, stable quality). Because of the relatively simple process equipment and equipment used for stretch forming, the cost is low and the flexibility is large; but the material utilization rate and productivity are low. Spinning is a metal turning process. In the process of processing, the blank is actively rotated with the spinning die or the spinning head actively rotates around the blank and the spinning die. The spinning head feeds relative to the core mold and the blank to cause continuous local deformation of the blank to obtain the required hollow rotation Body parts. Shaping is the second trimming of the shape of the product using the predetermined shape of the abrasive tool. Mainly reflected in the pressure plane, spring foot, etc. Re-processing is used when some materials have elasticity and cannot guarantee the quality of one-time molding.
properties:
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.
Data Sheet↓
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(m.K)
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.
Specific application:
Welding shaft, electronic substrate, plunger, nozzle, slide guide, diesel parts, metal molding, shaft wheels etc.
Why Choose Us? 1.12 years of professional production industrial ceramics factory 2.High quality products with low price 3.High precision parts with lowest tolerance 4.Short time for production 5.Has a group of experienced, professional and efficient R&D team 6.Has a good reputation in China and abroad. 7.MOQ is not limited, small quantity is welcome.
8.Vigorous team and good after-sales service
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FAQ
Q: Are you trading company or manufacturer ?
A: We are factory.
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-30 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 50% T/T in advance ,balance before shippment.
