Silicon Carbide (SiC) Ceramic Silicon Carbide (SiC) is a high-performance ceramic material with the following outstanding characteristics: 1. Extremely High Hardness and Wear Resistance Mohs hardness 9.2-9.5, second only to diamond and cubic boron nitride (CBN), suitable for extreme wear environments (such as bearings, seals, cutting tools). Wear resistance is superior to alumina (Al₂O₃) and tungsten carbide (WC), with a long service life. 2. Excellent High-Temperature Performance Withstands temperatures up to 1600°C (in air) or even higher (up to 2000°C in an inert environment), superior to most metals and ceramics. Maintains high strength at high temperatures, suitable for hot-end components of aero-engines and gas turbines. 3. Excellent Chemical Stability Resistant to acid and alkali corrosion (except hydrofluoric acid and molten strong alkalis), can be used in chemical reactors, pumps, valves and other corrosive environments. Strong oxidation resistance, a SiO₂ protective layer is formed on the surface at high temperatures, preventing further oxidation. 4. High Thermal Conductivity and Low Thermal Expansion Thermal conductivity (120-200 W/m•K) is close to that of aluminum metal, but the coefficient of thermal expansion (4.5×10⁻⁶/K) is much lower than that of metal, with excellent thermal shock resistance, suitable for rapid cooling and heating environments (such as semiconductor wafer chucks). 5. Good Electrical Properties Can be used as a semiconductor material (band gap 3.2 eV, used in high-temperature/high-frequency electronic devices). High breakdown electric field strength, suitable for high-voltage power equipment (such as SiC MOSFETs, diodes).

Sheathed Straight Hole Nozzle Straight hole nozzles are characterized by their simple structure, consisting only of a converging section and a straight section. These nozzles suffer from issues such as inlet region vortices, high pressure losses, and low exit velocity; the exit jet velocity is as low as 50% of that of a Venturi nozzle. Straight hole nozzles are typically used in sandblasting machines with low jet intensity and narrow enclosed structures. BR-SB series straight hole nozzles offer threaded and flanged connections for less demanding open sandblasting processes. Nozzle Material: Boron Carbide/Tungsten Carbide/Silicon Carbide Sheath: Aluminum/Steel/Polyethylene 2" Coarse Thread, Inlet Size: 32mm 1-1/4" Fine Thread, Inlet Size: 25mm Long Straight Hole Nozzle Made of Boron Carbide (B4C) or Tungsten Carbide (TC). Silicon Carbide (SiC)ModelOrificeLengthConnection Thread SpecificationBR-SBB-33/16"(4.8mm)130 mm1-1/4"NPSM; G1-1/4"; 2" UNCBR-SBB-41/4″ (6.4mm)130 mm1-1/4"NPSM; G1-1/4"; 2" UNCBR-SBB-55/16″(7.9mm)150 mm1-1/4"NPSM; G1-1/4"; 2" UNCBR-SBB-63/8″ (9.5mm)170 mm1-1/4"NPSM; G1-1/4"; 2" UNCBR-SBB-77/16″(11.1mm)200 mm1-1/4"NPSM; G1-1/4"; 2" UNCBR-SBB-81/2″ (12.7mm)220 mm1-1/4"NPSM; G1-1/4"; 2" UNCStraight Hole Nozzle  The material can be boron carbide/tungsten carbide/silicon carbide.Dimensions (length/outer diameter/inner diameter) and protective sheath can be customized.Inner Hole SizeODOuter DiameterNote2mm-12.7mm20mm10-25mmSpecial sizes can be customized according to customer requirementsFrom 1/4″ (6.4mm)-1/2″ (12.7mm)CustomizedCustomizedFrom 1/4″ (6.4mm)-1/2″ (12.7mm)Customized and FlangedCustomized  

Pipe Sandblasting EquipmentThe inner wall pipe sandblasting machine is specially designed for sandblasting the inner surface of pipes with diameters ranging from 15mm to 900mm. A specially designed nozzle is mounted on the nozzle seat to sandblast and clean the inside of the pipe.Model: IPB50 Processable Pipe Diameter: Inner diameter 15mm-50mm Sandblasting Capacity: 8m2/h Cleaning Grade: Sa2.5-3.0 Applicable Abrasives: Brown corundum, silicon carbide, steel grit, steel shot. Abrasive Size: Less than 0.5mm Model: IPB100 Processable Pipe Diameter: Inner diameter 40mm-100mm Blasting Capacity: 15m2/h Cleaning Grade: Sa2.5-3.0 Applicable Abrasives: Brown corundum, silicon carbide, steel grit, steel shot Abrasive Size: Greater than 0.5-1.0mm Model: IPB300 Pipes with an inner diameter of 76mm do not have a centering ring. Pipes with an inner diameter of 76mm-127mm are equipped with a centering ring. Pipes with an inner diameter of 127-300mm have a centering support. Blasting Capacity: 15m2/h Cleaning Grade: Sa2.5-3.0 Applicable Abrasives: Brown corundum, silicon carbide, steel grit, steel shot. Abrasive Size: Greater than 0.5-1.4mm Model: IPB900 Processable Pipes: Inner diameter 300mm-900mm, with 2 sets of legs of different lengths. Air Source: 0.6-0.7 MPa Speed: 80RPM Nozzle: 2 B4C nozzles, optional: 6mm, 8mm, 10mm Blasting Capacity: 16-21m2/h Cleaning Grade: Sa2.5-3.0 Applicable Abrasives: Brown corundum, silicon carbide, steel grit, steel shot. Abrasive Size: Greater than 0.5-1.4mm 

Pipeline Sandblasting Equipment  The inner wall nozzle is a special nozzle designed for the sandblasting of inner surfaces of pipes with diameters ranging from 15mm to 900mm. When sandblasting the inner wall of a pipe, the nozzle and rotating mechanism are placed inside the pipe and the machine is started. The sandblasting medium is ejected from a high-pressure tank through a guiding device onto the inner wall surface of the pipe for sandblasting operations. Model: IPB50 Processable Pipe Diameter: Inner diameter 15mm-50 Sandblasting Capacity: 8m2/h Cleaning Grade: Sa2.5-3.0 Applicable Abrasives: Brown corundum, silicon carbide, steel grit, steel shot. Abrasive Size: Less than 0.5mm

The inner wall nozzle is a special nozzle designed for the sandblasting of inner surfaces of pipes with diameters ranging from 15mm to 900mm. When sandblasting the inner wall of a pipe, the nozzle and rotating mechanism are placed inside the pipe and the machine is started. The sandblasting medium is ejected from a high-pressure tank through a guiding device onto the inner wall surface of the pipe for sandblasting operations. Model: IPB100 Processable Oipe Diameter: Inner diameter 40mm-100mm Blasting Capacity: 15m2/h Cleaning Grade: Sa2.5-3.0 Applicable Abrasives: Brown corundum, silicon carbide, steel grit, steel shot Abrasive Size: Greater than 0.5-1.0mm

Pipe inner wall nozzles are specially designed nozzles for sandblasting the inner surface of pipes with diameters ranging from 15mm to 900mm. When sandblasting the inner wall of a pipe, the nozzle and rotating mechanism are placed inside the pipe and the machine is started. The sandblasting medium is ejected from a high-pressure tank through a guiding device onto the inner wall surface of the pipe for sandblasting.

Pipe inner wall nozzles are specially designed nozzles for sandblasting the inner surface of pipes with diameters ranging from 15mm to 900mm. When sandblasting the inner wall of a pipe, the nozzle and rotating mechanism are placed inside the pipe and the machine is started. The sandblasting medium is ejected from a high-pressure tank through a guiding device onto the inner wall surface of the pipe for sandblasting.

Pipe inner wall nozzles are specially designed nozzles for sandblasting the inner surface of pipes with diameters ranging from 15mm to 900mm. When sandblasting the inner wall of a pipe, the nozzle and rotating mechanism are placed inside the pipe and the machine is started. The sandblasting medium is ejected from a high-pressure tank through a guiding device onto the inner wall surface of the pipe for sandblasting.

Boron carbide (B₄C), due to its unique physical and chemical properties, has significant advantages in the field of armor protection. The following are its main advantages:  Physical and Chemical Properties of Boron Carbide Ceramics from Guizhou Muyee Fine Ceramics Serial Number Item Performance Parameters 1 Boron Carbide Content B4C (%) 98.47 2 Total Boron TOTAL B (%) 77.92 3 Total Carbon TOTAL C (%) 20.92 4 Iron Oxide Fe 2 O 3 (%) 0.035 5 Boron Oxide B 2 O 3 0.14 6 Bulk Density g/cm³ 3 2.50-2.52 7 Flexural Strength Mpa 680 8 Compressive Strength Mpa 2980 9 Fracture Toughness K IC Mpa.m 1/2 3.8 10 Young's Modulus Gpa 450 11 Microhardness HV Mpa 3650 12 Sound Velocity m/sec 14300 Boron carbide (B₄C), due to its unique physical and chemical properties, has significant advantages in the field of armor protection. The following are its main advantages:  1. Extremely High Hardness  Mohs hardness reaches 9.6, second only to diamond and cubic boron nitride, effectively resisting penetration from high-speed impact objects such as bullets and shrapnel.  High compressive strength (approximately 2.9 GPa), suitable as the front layer of composite armor to directly absorb impact energy. 2. Lightweight  Low density (2.52 g/cm³), only 1/3 that of steel and 85% that of silicon carbide (SiC). Under the same level of protection, it can significantly reduce the weight of the armor, suitable for vehicles, aircraft, and individual protective equipment (such as bulletproof inserts). 3. Excellent Anti-ballistic Performance  High elastic modulus (450-470 GPa) and fracture toughness, which can consume projectile kinetic energy through fragmentation and blunting.  The protection efficiency against small-caliber armor-piercing projectiles (such as 7.62 mm AP) and fragments is significantly better than that of traditional metal armor. 4. High Temperature Resistance and Chemical Stability  High melting point (2450 °C), maintaining structural strength even in high-temperature environments.  Resistant to acid and alkali corrosion, suitable for harsh environments (such as naval equipment or chemical protection). 5. Neutron Absorption Capacity  Boron has a high thermal neutron absorption cross-section (600 barn), and can be used for nuclear radiation shielding or nuclear facility protection, combining structural and functional properties. 6. Multifunctional Composite Design  Often combined with carbon fiber, Kevlar fiber, ultra-high molecular weight polyethylene fiber, ceramic laminated materials, or metal backing plates (such as titanium alloy) to form a gradient protection structure, improving resistance to multiple impacts. 7. Limitations and Countermeasures:  High brittleness: prone to cracking under impact, requiring improvement through nano-modification, addition of toughening phases (such as SiC particles), or optimization of sintering processes.  High cost: powder preparation and sintering processes are complex, mostly used in key parts (such as the front of armored vehicles or pilot protection).

Boron carbide (B₄C) possesses significant advantages in armor protection due to its unique physical and chemical properties. Its main advantages are: 1. Extremely High Hardness - Mohs hardness of 9.6, second only to diamond and cubic boron nitride, effectively resisting penetration from high-speed projectiles such as bullets and shrapnel. - High compressive strength (approximately 2.9 GPa), suitable as the front layer of composite armor to directly absorb impact energy. 2. Lightweight - Low density (2.52 g/cm³), only 1/3 that of steel and 85% that of silicon carbide (SiC). For the same level of protection, it significantly reduces armor weight, suitable for vehicles, aircraft, and individual protective equipment (such as ballistic plates). 3. Excellent Ballistic Performance - High elastic modulus (450-470 GPa) and fracture toughness, dissipating projectile kinetic energy through fragmentation and blunting. - Significantly superior protection efficiency against small-caliber armor-piercing projectiles (such as 7.62 mm AP) and shrapnel compared to traditional metal armor. 4. High Temperature Resistance and Chemical Stability - High melting point (2450 °C), maintaining structural strength at high temperatures. - Resistant to acid and alkali corrosion, suitable for harsh environments (such as naval equipment or chemical protection). 5. Neutron Absorption Capacity - Boron has a high thermal neutron absorption cross-section (600 barn), usable for nuclear radiation shielding or nuclear facility protection, combining structural and functional properties. 6. Multifunctional Composite Design - Often combined with carbon fiber, Kevlar fiber, ultra-high molecular weight polyethylene fiber, ceramic laminated materials, or metal backing plates (such as titanium alloy) to form a gradient protection structure, improving resistance to multiple impacts. 7. Limitations and Countermeasures: - High Brittleness: Susceptible to cracking under impact, requiring improvement through nanomodification, addition of toughening phases (such as SiC particles), or optimization of sintering processes. - High Cost: Powder preparation and sintering processes are complex, mostly used in critical areas (such as the front of armored vehicles or pilot protection). Typical Applications: - Military: Composite armor for armored vehicles, ballistic plates for helicopters, body armor (such as enhanced versions of the US military's "Interceptor" armor). - Civilian: Riot control vehicles, armored transport for valuables, nuclear power plant protection components. Boron carbide is irreplaceable in scenarios requiring both lightweight and high protection. Future material composite and process optimization will further expand its application boundaries.