grinding wearable Silicon Nitride Ceramic Roller washer customized
Reputation depends on quality, quality comes from Hard!
Silicon Nitride Ceramic:
American Polymer Group (PGI) uses renewable polypropylene and polyethylene terephthalate to create a new type of basic material that can be used in moldable auto parts to reduce noise. Including Silicon Nitride Ceramic Disc, Zirconia Ceramic Parts, etc. This kind of material is mainly used in the body and wheel well liner to produce a barrier layer that can absorb the sound in the car compartment and reduce the noise by 25% to 30%. PGI has developed a special one-step production process , Combine recycled materials and untreated materials organically, and make the two materials into a whole through lamination and needle punching. The form and calculation of thermoplastic molding shrinkage are as mentioned above, and the factors that affect thermoplastic molding shrinkage are as follows:
1.1 Plastic Varieties During the molding process of thermoplastic plastics, due to the volume changes caused by crystallization, strong internal stress, large residual stress frozen in the plastic parts, strong molecular orientation and other factors, the shrinkage rate is higher than that of thermoset plastics. Large, wide range of shrinkage rate and obvious directionality. In addition, the shrinkage rate after molding, annealing or humidity treatment is generally greater than that of thermosetting plastics. 1.2 Characteristics of plastic parts When the molten material is in contact with the surface of the cavity, the outer layer is immediately cooled to form a low-density solid shell. Due to the poor thermal conductivity of plastic, the inner layer of the plastic part is slowly cooled to form a high-density solid layer with large shrinkage. Therefore, the wall thickness, slow cooling, and high-density layer thickness will shrink more. In addition, the presence or absence of inserts and the layout and quantity of inserts directly affect the direction of material flow, density distribution and shrinkage resistance. Therefore, the characteristics of plastic parts have a greater impact on shrinkage and directionality.
1.3 The feed inlet form, size, distribution, these factors directly affect the material flow direction, density distribution, pressure maintaining and shrinking effect and molding time. Direct feed port and feed port with large cross-section (especially thicker cross-section) have small shrinkage but large directionality, and short feed port width and length have small directionality. Those that are close to the feed port or parallel to the direction of the material flow will shrink more.
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.
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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.
