smooth surface Silicon Nitride Ceramic Roller bushing
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Silicon Nitride Ceramic:
Bulging is a processing method that uses a mold to stretch and thin the sheet and increase the local surface area to obtain parts. Commonly used are undulating forming, bulging of cylindrical (or tube) blanks and stretch forming of flat blanks. Bulging can be achieved by different methods, such as rigid die bulging, rubber bulging and hydraulic bulging. Flanging is a plastic processing method in which the edge of a thin plate blank or the material in the narrow band area of the edge of the prefabricated hole on the blank is bent into a vertical edge along a curve or a straight line. Flanging is mainly used to strengthen the edges of parts, remove trimming and make parts assembled and connected with other parts or three-dimensional parts with complex and specific shapes and reasonable space on the part, while improving the rigidity of the parts. When forming large sheet metal, it can also be used as a means to control cracks or wrinkles. Therefore, it is widely used in industrial sectors such as automobiles, aviation, aerospace, electronics and household appliances. Neck is a punching method that reduces the diameter of the open end of the stretched flangeless hollow part or tube blank. The diameter change of the end of the workpiece before and after the necking should not be too large, otherwise the end material will wrinkle due to severe compression and deformation. Therefore, it is often necessary to shrink the neck from a larger diameter to a smaller diameter multiple times.
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
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A: We are factory.
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A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
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A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 50% T/T in advance ,balance before shippment.
