Dongguan Ming Rui Ceramic Technology Co.,ltd
Dongguan Ming Rui Ceramic Technology Co., Ltd
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Mingrui Ceramics is an expert at manufacturing & supplying technical ceramic products to be used in the most demanding thermal, electrical, and mechanical conditions. Our ceramics have been used as electrical insulators in a variety of applications where high voltages and high temperatures cause other materials to fail. There are types of ceramic materials that offer excellent thermal conductivity which are commonly used in electronics applications where electrical insulation and heat dissipation are required. Many ceramic insulators undergo special processes like glazing, coating, or metalizing which opens more opportunities for practical application of technical ceramics.
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We are a high voltage insulators supplier, mainly provides ceramic insulator products such as disc suspension insulator, line post insulator, pin insulator, stay insulator, hollow bushing insulators,SF6 circuit breaker bushings, capacitor hollow bushing insulator, transformer bushing insulators, station post insulator for transmission and distribution lines and substations...
PRODUCT INDEX
High voltage ceramic insulator
Ceramic hollow insulator
Circuit breaker bushing
Capacitor porcelain bushing
Transformer bushing
Instrument transformer bushing
Cable ceramic bushing insulator
Ceramic overhead line insulator
Ceramic disc suspension insulator
Ceramic line post insulator
Ceramic pin insulator
Ceramic stay insulator
Ceramic spool insulator
Ceramic shackle insulator
Ceramic station post insulator
Mingrui offers you a wide range of production facilities like extrusion, injection moulding, pressing and casting. Depending on product geometry and quantities, we will choose the suitable technique for your products.For the final finishing of the parts we use CNC machining centres, equipped with diamond tools in order to meet high accuracies.
Our aim is to offer the ideal solution for any application. Our engineers therefore offer custom solutions that range beyond our existing product portfolio. With our well-equipped industrial development facilities, we produce innovations that can be rapidly commercially exploited.
Properties Sheet of zirconia and alumina :
| Properties | Units | 95 Alumina | 99 Alumina | ZrO2 |
| Density | g / cm³ | 3.65 | 3.92 | 5.95-6.0g/cm³ |
| Water absorption | % | 0 | 0 | 0 |
| Coefficient of thermal expansion | 10-6/K | 7.9 | 8.5 | 10.5 |
| Modulus of Elasticity Young's Mod | GPa | 280 | 340 | 210 |
| Poisson's ratio | / | 0.21 | 0.22 | 0.3 |
| HV Hardness HV | MPa | 1400 | 1650 | 1300-1365 |
| Flexural Strength @ room temperature | MPa | 280 | 310 | 950 |
| Flexural Strength @700°C | MPa | 220 | 230 | 210 |
| Compressive Strength @ room temperature | MPa | 2000 | 2200 | 2000 |
| Fracture Toughness | MPa *m 1/2 | 3.8 | 4.2 | 10 |
| Heat conductivity @ room temperature | W/ m*k | 18-25 | 26-30 | 2-2.2 |
| Electrical Resistivity @ room temperature | Ω*mm2 /m | >1015 | >1016 | >1015 |
| Max use temperature | °C | 1500 | 1750 | 1050 |
| Resistance to acid alkaline | / | high | high | high |
| Dielectric Constant | / | 9.5 | 9.8 | 26 |
| Dielectric Strength | KV/mm | 16 | 22 | / |
| Thermol Shock Resistance | △ T ( °C ) | 220 | 180-200 | 280-350 |
| Tensile Strength @ 25 °C | MPa | 200 | 248 | 252 |
Q1: How to send an inquiry
You can send your drawing with technology requiremens,and infrom your purchase quantity .If you can,pls inform what is your part used in .We will confirm what is the most suitable materials and quote our best price to you in 24 hour
Q2:Can you provide the free samples ?
Yes,we can provide the sample free of charge if we have the stock product as customer's required,but the courier fee be collected.
Q3:How long will it take for you to send me a quote?
This depends on the complexity of your requirements. For simple items such as plates and rods, we can generally supply a quotation within 24 hours.
Q4:What's the delivery time?
For the standard products, like ceramic substrate and insulating rods, delivery time is normally 7 working days. For hot pressed boron nitride and machinable glass ceramic, it's about 10 working days. For customized products made of alumina, zirconia, boron carbide and silicon nitride, total producing time is about 30-45 working days.
Q5:How to contact us ?
You can send the email to judy (at) cerampart.com
Call me 0086 15988537579
Q6:More detail company information ?