48mm Red 95 Porcelain Torch Protection Nozzle Welding Accessories
Product Overview
Alumina nozzle 57N series 75#
Alumina ceramics have better conductivity, higher mechanical
strength and high temperature resistance. As a welding nozzle made
of alumina ceramics, it has excellent high temperature resistance,
high melting point, and no decline in mechanical properties. It can
be used at high temperatures without affecting product performance
or bursting. Good corrosion resistance, regardless of strong acid
(except hydrofluoric acid), strong alkali (except hot alkali),
inorganic organic salts and other conditions will not be affected.
The company has an independent plant, self-produced and sold,
perfect technology and modern production workshop. Each process is
produced strictly in accordance with the process, ensuring quality
and quantity.
Main ingredients: 95% Al2O3 (alumina)
- Density 3.6g/cm3
- Water absorption rate 0%
- Sintering temperature 1700℃
Thermal characteristics:
- Maximum operating temperature 1700℃
- Thermal expansion coefficient: 8*10-6/℃(0--1000℃)
- Thermal shock resistance: 220T (℃)
- Thermal conductivity: 25--14w/m.R (25-300℃)
Product parameter table
| Size | Part Number | Length (mm) | Orifice (in) | Orifice (mm) | Torchdesign |
| NO 6 | 57N75 | 48 | 3/8 | 9.5 | 17/18/26 |
| NO 6L | 57N75L | - | 3/8 | 9.5X70 | 17/18/26 |
| NO 8 | 57N74 | - | 1/2 | 12.5 | 17/18/26 |
| NO 8L | 57N74L | - | 1/2 | 12.5X70 | 17/18/26 |
Material
Project | Alumina AL203 | Silicon carbide sic | Silicon nitride sin | Silicon nitride sin |
| Color | Ivory | black | black | Milky white, gray black |
| Content(%) | 99.5 | …… | …… | …… |
| Main features | - Excellent high frequency electrical insulation
Good wear resistance preservative Strong High hardness
| - Good high temperature strength
- High thermal conductivity
- Strong alkali resistance
- Wear-resistant
- Lightweight
| - Good high temperature strength
- Strong impact resistance
- Strong corrosion resistance
- Lightweight
| - High strength and high impact resistance
- Good self-lubricating
- Strong alkali resistance
- Smooth surface
- Good toughness
|
| The main purpose | - Wear parts
- High temperature parts
- Corrosion resistant parts
| - Machinery Seal
- Sliding parts
- High temperature parts
| - Molten metal parts
- Metal plasticity
- Processed parts
| - Industrial knives
- Pump parts
- Wear parts
|
| Density | Kg/m³ | 3.9*10 | 3.16*10 | 3.3*10 | 6.0*10 |
Mechanical behavior
| Vickers hardness | Gpa | 16.0 | 23.0 | 14.0 | 13.2 | 12.7 |
| Flexural strength | Mpa | 360 | 450 | 1020 | 1000 | 1470 |
| Compressive strength | Mpa | 2350 | …… | …… | …… | …… |
| Fracture toughness | Mpa | 4 | 2-3 | 7 | 4-5 | 4-5 |
Thermal performance
| Linear expansion coefficient | 40-400℃ | ×10-5/℃ | 7.2 | 3.7 | 2.8 | 10.5 | 10.8 |
| 40-800℃ | 8.0 | 4.4 | 3.3 | 11.0 | 11.3 |
| Thermal conductivity | W/(m·k) | 32 | 200 | 27 | 3 | 3 |
| Specific heat | J/(kg·k) | 0.78*10 | 0.67*10 | 0.65*10 | 0.46*10 | 0.46*10 |
| Thermal shock resistance (in water) | ℃ | 250 | …… | ＞800 | 300 | 350 |
| Electrical performance | Dielectric strength | V/m | 15*105 | …… | 13*105 | 11*105 | …… |
| Volume resistance(20℃) | Ω·cm | ＞1014 | 108 | 1014 | 1013 | …… |
| Dielectric constant | …… | 9.6 | …… | 9.9 | 33 | …… |
| Loss factor | ×10-4 | 10 | …… | …… | 520 | ……
|
Product advantages
- long lasting
- Good electrical insulation
- Strong thermal shock resistance
- Good thermal conductivity
- Strong moisture resistance
- High temperature resistance
- Good chemical stability
- High mechanical strength
Applications
- Shipbuilding, bridges, large-scale structural facilities
- Lighting industry
- Electronics and electric heating industry
Product packaging
Packed in carton
In addition to common sizes and specifications, our company accepts
drawings and samples for customization. If necessary, please
contact our company directly.
FAQ
1. What other products does the company produce?
Welded ceramic nozzles, welded ceramic liners, electronic ceramics,
textile ceramics, etc.
2. Are you a businessman or a manufacturer?
We are a company, we have our own factory
3. How long is your delivery time?
Negotiable
4. Can the product be customized?
Can be customized
5. What is the product packaging?
Carton or according to customer requirements
