Silicon nitride cylindrical nozzle

Application: Mechanical engineering. Performance characteristics: high hardness, high strength, high temperature resistance, oxidation resistance and other properties
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Silicon nitride cylindrical nozzle pipe belongs to a kind of fine ceramics, silicon nitride has good chemical stability, in addition to not resistant to hydrofluoric acid and concentrated NaOH erosion, can resist all inorganic acids and some alkali solutions, molten alkali and salt corrosion of silicon nitride normal casting temperature is stable for many metals, not infiltrated or corroded silicon nitride oxidation resistance is good.


Advantages of silicon nitride cylindrical nozzle :


Heat resistance: Silicon nitride ceramic cone tube and high temperature resistant ceramic sandblasting nozzle have excellent heat resistance, can maintain stable physical and chemical properties at extreme high temperatures, suitable for high temperature furnace, melting equipment, sandblasting equipment and other scenarios.


Corrosion resistance: These precision ceramic products have excellent corrosion resistance and can be used stably in harsh environments such as acid and alkali solutions and corrosive gases for a long time, such as corrosive media treatment equipment and chemical experimental equipment.


Precision machining: Silicon nitride ceramic cone tube and high temperature resistant ceramic blast nozzle can be precision machined to meet customer specific size, shape, aperture and other needs to ensure the accuracy and stability of the equipment, such as the nozzle accuracy and uniformity of the blast nozzle.


Wear resistance: These precision ceramic products have excellent wear resistance and are stable under the impact of high-speed fluids or particles, making them suitable for applications such as sandblasting equipment and abrasive conveying systems.


silicon nitride cylindrical nozzle  performance indicators :

Performance

Density/(g/cm³)

3.15≤ρ≤3.25

Elastic modulus/GPa

270≤E≤330

Poisson's ratio

0.23≤μ≤0.29

Coefficient of thermal expansion (room temperature to 500℃)/X10-6/℃

2.0≤α≤3.7

Bending strength/MPa

Four-point test

≥750

≥650

≥530


Three-point test

≥820

≥720

≥550

Vickers hardness(HV)

≥1420

≥1330

≥1270

Fracture toughness

≥6

≥5

≥5

Crushing load ratio

40%

35%

30%

microcosmic structure

Air hole/μm

≤10

≤10

≤25

Inclusion

25<S≤50

≤4

≤8

≤16

50<S≤100

≤1

≤2

≤4

100<S≤200

0

≤1

≤25

S>200

0

0

≤1


Ceramic product processing accuracy :

Item

Precision value

Dimensional exact values

Up to 0.001mm

Degree of finish

Up to mirror

The number of concentricities

Up to 0.003mm

The number of parallelism

Up to 0.002mm

Bore tolerance

The minimum can be machined 0.005mm

Straight groove

The narrowest machined groove is 0.1*100mm

Thickness dimension

Minimum machining to 0.08mm

Screw thread

Min machining inner thread M2, outer thread no limited

Cylindricity dimension

Up to 0.004mm

Linear tolerance

Up to 0.001mm

Min aperture

The minimum processing capacity is 0.07mm


Applications of silicon nitride cylindrical nozzles:


Metallurgical industry

In the metallurgical industry, silicon nitride ceramic cone tube and high temperature resistant ceramic sandblasting nozzle are widely used in high temperature and high pressure environment such as smelting furnace and melting equipment, bearing the key functions of sandblasting, cooling, heat insulation and so on.


Automobile manufacturing

In the automotive industry, these precision ceramic products are used as sand blasters for spraying equipment, which can operate stably in high temperature and high pressure environments, ensuring the accuracy and stability of the coating process.


Aerospace

In the aerospace sector, silicon nitride ceramic cones and high temperature resistant ceramic sand blasters are used in many key components that can withstand extreme temperatures and pressures to ensure stable operation.


Chemical industry

In the chemical industry, these precision ceramic products are used for spraying, cooling and other applications of corrosive media, such as chemical pipeline cleaning equipment, chemical reactors, etc.