custom made Alumina Ceramic structural machinery parts
Reputation depends on quality, quality comes from Hard!
Alumina Ceramics:
Alumina ceramics have different requirements for the flow state of the filling melt (mainly the pressure and speed during flow) in order to meet the quality requirements of the runner system and the various parts of the mold. In an injection process, when the screw advances the melt to the mold, it is required to achieve different pressures and speeds at different positions, which is called multi-stage injection molding. Generally, it is more scientific to set at least three or more segments of plastic parts during molding, that is, the main channel is a segment, the runner to the gate is a second segment, and the product is filled with a cavity of about 90% for the third. The remainder of the segment is the fourth segment. The calculation of the gravimetric method can be used to determine the switching position of each segment. In actual production, the multi-stage injection process parameters should be scientifically analyzed according to product quality requirements, runner structure, and mold exhaust conditions. , reasonable setting. It can usually be set by the debugging observation method. The pressure/speed required to find the switching position at the time of injection is set to 0, and the position of the melt and the defect of the product are observed, and the adjustment is gradually performed until a reasonable position is found. . However, in the process of debugging and observation, it is necessary to pay attention to the demolding condition of the unfilled product, so as to avoid sticking due to underfilling in some depressed parts of the mold.
Other process parameters In injection molding, in addition to the setting of several main parameters such as molding temperature, pressure, speed, time, multi-stage injection switching position, there are many other process parameters, such as back pressure, screw speed, and screw down. Cable set and other various operating parameter settings, etc., can not ignore its settings.
properties: High hardness, high strength, wear resistance, corrosion resistance, high temperacture (1600°), good thermal diffusivity, good insulativity, low cost etc.
Data Sheet↓
Color: White/Ivory Density: 3.9g/cm3 Alumina Content: 96% 99% 99.5% Gas permeability: 0 Water Absorption: 0 MONS' Hardness: 82 Vickers Hardness (Hv50): 15.7(1600) Gpa(Kg/mm²) Flexural Strength(20°C): 330Mpa Compressive Strength(20°C): 2000Mpa Fracture Toughness (20°C): 4 MPam1/2 Thermal Conductivity(20°C): 27.5W(m.K) Thermal Expansion Coefficient: 7.6 10-6/°C Thermal Shock Resistance: 200 △T°C
Maximum use temperature 1650°C
Dielectric Strength: >10 KV/mm
Dielectric Constant: 9.1er
Dielectric Loss Angle(1MHz): 0.0002-0.0003
Volume Resistivity(20°C): >1014Ω.cm
Application industry: Machinery, electronic, chemical, petroleum etc. Specific application: Electrical ceramic substrate, plunger, sealing ring 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.
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.
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A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 50% T/T in advance ,balance before shippment.