Power Alumina Ceramic Parts

Power alumina ceramic parts is a kind of industrial ceramics, which is loved by various industries because of its high wear resistance.

In the metallurgy and power industries, transporting a large amount of pulverized coal, dust, mud, limestone and other materials requires a lot of pipelines. The use of metal pipelines is not enough to resist the wear of a large number of materials. It is recommended to use alumina ceramics. Domestic and foreign customers provide advanced ceramics with high strength, high toughness, wear resistance, corrosion resistance and high temperature resistance. It is a high-tech enterprise integrating R&D, production and sales of industrial precision advanced ceramic products in the field of precision ceramics. With a variety of modern high-precision equipment, it has independently realized the completion of the entire production process of ceramic parts from ceramic powder preparation, green body molding, high temperature sintering to ceramic material finishing.

Product Description

1. Implementation standards: the company strictly implements ISO9001 certification, and the products have passed ROHS, FDA EU certification, etc.

2. Product material standards: ISO, GB, ASTM, SAE, EN, DIN, BS, AMS, JIS, ASME, DMS, TOCT, GB

3. Main processes: grouting, injection molding, tape casting, isostatic pressing, 3D printing

4. Available materials for ceramics:

It mainly produces finished ceramic rods, ceramic tubes, ceramic rings, ceramic plates, ceramic suction cups, ceramic blades and other special-shaped ceramic structures. The main ceramic materials are alumina, zirconia, silicon carbide, silicon nitride, and aluminum nitride ceramics. High temperature resistance, wear resistance, corrosion resistance, acid and alkali resistance, anti-magnetic, pressure resistance. And 3D printing, etc. are customized according to customer requirements.

Combined tube, its high wear resistance effectively resists material wear and impact.

Product Feature and Status Quo

1. Alumina ceramic plate

Therefore, it is widely used in the manufacture of knives, ball valves, grinding wheels, ceramic nails, bearings, etc. Among them, Al2O3 ceramic knives and industrial valves are the most widely used.

2. Power alumina ceramic parts in engineering ceramics are used in electronics/electricity

In terms of electronics and electricity, there are various Al2O3 ceramic bottom plates, substrates, ceramic films, transparent ceramics and various Al2O3 ceramic electrical insulating ceramic parts, electronic materials, magnetic materials, etc. Among them, Al2O3 transparent ceramics and substrates are the most widely used .

3. Then alumina ceramics in engineering ceramics are used in chemical industry

In chemical applications, Al2O3 ceramics also have a wide range of uses, such as Al2O3 ceramic chemical filler balls, inorganic microfiltration membranes, corrosion-resistant coatings, etc. Among them, Al2O3 ceramic membranes and coatings are the most studied and applied.

4. Finally, alumina ceramics in engineering ceramics are used in medicine

In medicine, Al2O3 is more used to make artificial bones, artificial joints and artificial teeth.

(1) High hardness

As determined by the Shanghai Institute of Silicate, Chinese Academy of Sciences, its Rockwell hardness is HRA80-90, second only to diamond in hardness, far exceeding the wear resistance of wear-resistant steel and stainless steel.

(2) Excellent wear resistance

As determined by the Institute of Powder Metallurgy of Central South University, its wear resistance is 266 times that of manganese steel and 171.5 times that of high-chromium cast iron. According to our customer follow-up survey for more than ten years, under the same working conditions, the service life of the equipment can be extended by at least ten times.

(3) Light weight

Its density is 3.5g/cm, which is only half of that of steel, which can greatly reduce the equipment load.

5. Sintering equipment

Alumina ceramic sintering equipment:

Studio size: 13720 length/280x2 width/450 height (including push plate)

Push plate size: 240L/270W/40H/mm

Material: Extra-grade jade-resistant mullite (DGM90)

Rated power: about 210KW

Constant temperature power: about 130KW (affected by product weight, temperature, and propulsion speed, for reference)

Rated operating temperature in high temperature zone: 1400℃

Temperature control points: 10 points

Instrument temperature control accuracy: ±2°C (after steady state).

The temperature rise of the furnace side wall surface: ≤55℃ (the center position of the outer surface of the decorative board).

Propulsion speed: 500~1500mm/h (continuously adjustable)

Holding time: 5h (adjusted by advancing speed, advancing speed: 980mm/h)

Main thruster thrust: 3T

Working power: 3-phase 4-wire, 380V

Maximum physical size of electric kiln: about 16000L/1800W/1700H mm

6. Technical indicators

Main technical indicators of wear-resistant ceramics:

Alumina ceramic content: ≥92%

Density: ≥3.6 g/cm

Rockwell hardness: ≥80 HRA

Compressive strength: ≥850 Mpa

Fracture toughness KIC: ≥4.8MPa m1/2

Bending strength: ≥290MPa

Thermal conductivity: 20W/m.K

Thermal expansion coefficient: 7.2×10-6m/m.K

7. Current Situation and Trends

(1) Analysis of the current situation

Since the reform and opening up, my country's building ceramics industry has achieved rapid development. With my country's entry into the WTO, the building ceramics industry is facing an unprecedented development opportunity and an unprecedented challenge at the same time.

(2) Development trend

As the most widely used material in advanced ceramics, Power alumina ceramic parts presents the following development trends along with the development of the entire industry:

①The level of technical equipment will be rapidly improved: The development of computer technology and digital control technology has promoted the technological progress and rapid development of the advanced ceramic material industry, such as automatic control of continuous sintering kilns, high-power and large-capacity grinding equipment, high-performance powder granulation Equipment and other advanced complete sets of equipment such as net pressure forming equipment have beneficially promoted the improvement of the overall level of the industry, and at the same time, the production efficiency and product quality have also been significantly improved;

②The level of product quality has been continuously improved: the domestic microcrystalline alumina ceramic products have grown from scratch, the industrial scale has grown from small to large, and the product quality has gone through a rapid development process;

③The scale of the industry will expand rapidly: As the basic material of other industries or fields, microcrystalline alumina ceramic products are affected and restricted by the development level of other industries. Judging from the application of alumina ceramics, the scope of application is getting wider and wider, and the amount of use is increasing, especially in the production of anti-wear engineering and architectural ceramics, the increase will be more significant.

Process After Sintering

Processing equipment: equipped with CNC engraving machine, centerless grinding, internal and external cylindrical grinding, surface grinding, CNC lathe machining center, wire cutting, turning, milling, grinding and other high-precision production and testing equipment.

Moulds and Inspection Fixtures

1. Mold service life: usually semi-permanent. (except for lost foam).

2. Mold delivery time: 10-25 days, (according to product structure and product size).

3. Tooling and mold maintenance: Zhongwei is responsible for precision parts.

Quality Control

1. Quality control: the defective rate is less than 0.1%.

2. Samples and trial run will be 100% inspected during production and before shipment, sample inspection for mass production according to ISDO standards or customer requirements.

3. Test equipment: roundness measuring instrument, three-coordinate measuring instrument, image coordinate measuring instrument, Hexagon three-coordinate measuring instrument, image measuring instrument, density measuring instrument, smoothness measuring instrument, micro Vickers hardness tester.

Application

In the metallurgy and electric power industries, it is necessary to consume a lot of pipes to transport a large amount of coal powder, dust, mud, limestone and other materials. The use of metal pipes is not enough to resist the wear of a large number of materials. It is recommended to use Power alumina ceramic parts, which have high wear resistance. Effectively resist material wear and impact.

The same is true in mining and coal industries. Mine transports ore powder, tailings, sand and gravel, and the wear of the pipeline is more serious. The use of wear-resistant ceramic pipelines is at least 5 times longer than other ordinary pipelines. In the coal industry, the transportation of pulverized coal is generally carried out by wet transportation, which requires the pipeline to be both wear-resistant and corrosion-resistant. The use of alumina ceramic pipelines is just the right remedy, which can transport corrosive materials, and alumina ceramics can protect the exterior well. Steel pipes are not corroded.