Silicon Nitride ceramic machinery threaded bolt nut cap
Reputation depends on quality, quality comes from Hard!
Silicon Nitride Ceramic:
The processing temperature of the plastic is controlled by the barrel of the injection machine. The correct selection of the barrel temperature is related to the plasticization quality of the plastic. The principle is to ensure smooth injection molding without causing partial degradation of the plastic. Generally, the maximum temperature at the end of the barrel should be higher than the flow temperature (or melting temperature) of the plastic, but lower than the decomposition temperature of the plastic. In addition to strictly controlling the maximum temperature of the injection machine barrel during production, the residence time of the plastic melt in the barrel should also be controlled. When Laser Cutting Ceramics determining the barrel temperature, the structural characteristics of the product and mold should also be considered. When forming thin-walled or complex-shaped products, the flow resistance is large, and increasing the barrel temperature helps to improve the fluidity of the melt. In the injection molding process, the mold temperature is controlled by the cooling medium (usually water), which determines the cooling rate of the plastic melt. The lower the mold temperature, the faster the cooling rate, and the faster Laser Cutting Ceramics the melt temperature decreases, resulting in an increase in melt viscosity and injection pressure loss, which may even cause insufficient mold filling in severe cases. As the mold temperature increases, the melt fluidity increases, the required filling pressure decreases, and the surface quality of the product improves; but due to the increase in cooling time, the productivity of the product decreases and the molding shrinkage rate of the product increases. For crystalline plastics, since higher temperatures are conducive to crystallization, increasing the mold temperature can increase the density or structural crystallinity of the product. At higher mold temperatures, the relaxation process of polymer macromolecules in the product is faster, and the molecular orientation and internal stress will be reduced.
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
Products Show
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.
