polished precision silicon nitride ceramic bearing bush sleeve
Reputation depends on quality, quality comes from Hard!
Silicon Nitride Ceramic:
For the mold industry, due to the miniaturization of stamping parts and the continuous improvement of precision requirements, higher requirements are put forward for mold technology. The reason is that micro-parts are much more difficult to form than traditional parts. The reasons are: ①The smaller the part, the rapid increase Machinable Ceramic Sleeve in the surface area to volume ratio; ②The adhesion between the workpiece and the tool, the Machinable Ceramic Bushing surface tension, etc., increase significantly; ③The grain The influence of scale is significant, and it is no longer an isotropic uniform continuum; ④It is relatively difficult to store lubricant on the surface of the workpiece. An important aspect of micro punching is punching small holes. For example, there are many small holes that need to be punched in micro-machines and micro-instruments. Therefore, the study of small hole punching should be an extremely important issue in micro punching. The research on punching small holes focuses on: first, how to reduce the size of the punch; second, how to increase the strength and rigidity of the micro punch (in addition to the materials and processing technology involved in this aspect, the most commonly used is to increase the micro Guiding and protection of punches, etc.). Although there are still many issues that need to be studied in punching small holes, many Ceramic Disc gratifying results have been achieved. Some data indicate that a micro-stamping machine tool developed abroad is 111mm long, 62mm wide and 170mm high. It is equipped with an AC servo motor and can generate a pressure of 3kN. The press machine is equipped with a continuous stamping die, which can realize punching and bending.
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(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.
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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よくある質問
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.
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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.
