Ceramic Positioning Pins Are Extremely Resistant To Corrosion And
Wear
Product Overview
The ceramic positioning pin has extremely strong corrosion
resistance, and can also be used in strong acid, strong alkali and
sea water. At 1100 ℃, the strength and hardness are almost
unchanged. Can also be used in non-magnetic and magnetic fields.
Electrical insulation. The density is 3.25---3.28g/cm3, light
weight, about 60% lighter than the steel ball, which greatly
reduces the centrifugal force on the channel when the bearing
rotates at high speed and reduces wear. High rigidity, high
strength, its hardness is twice as high as bearing steel, and the
elastic modulus is about 1/3 higher. The coefficient of linear
expansion is 3.2×10-6/K, which is almost 1/4 of the bearing steel,
and can withstand the rapid changes in temperature.
The role of ceramic positioning pins is to limit the free movement
of items. Degrees of freedom: When an object is in space, it must
have six degrees of freedom, linear movement in the three axes of X
Y Z, and rotational movement around X Y Z. Positioning pins are
parts that participate in limiting these degrees of freedom. In a
mold composed of two or more parts, a pin designed to accurately
position the adjacent two parts of the mold. In the spindle
positioning, 1) mechanical cam mechanism (2) rough positioning by
photoelectric disk method, then a hydraulic or pneumatic
positioning pin is inserted into the pin hole or pin groove on the
spindle to achieve precise positioning, and the positioning pin
exits after the tool change is completed , The spindle starts to
rotate.
Various styles for you to choose:
Product parameter table
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
Performance characteristics:
1. The ceramic positioning pin is similar to the ordinary welding
positioning pin, but it is made of super-hard silicon nitride
ceramic material. The special physical and chemical properties of
ceramic materials determine certain special properties of silicon
nitride positioning pins. For example, high wear resistance, high
hardness, non-conductive, non-magnetic, non-stick welding slag and
other excellent properties.
2. Below I will briefly introduce the performance of ceramic
materials:
High hardness: the hardness of zirconia is second only to diamond
High wear resistance: High hardness and good red hardness determine
that the zirconia positioning pin has excellent wear resistance
High cost performance: the service life of zirconia positioning
pins is several times that of ordinary positioning pins
Applications
Ceramic materials such as zirconia and silicon nitride are
wear-resistant at high temperatures, used as mechanical parts, as
rotors and stators in engines; hot-pressed piston crowns, reaction
sintered burners, spark plugs, cylinder liners and other precision
parts; heat-resistant Good shock resistance, used as thermocouple
casing, ceramic positioning pin, casting mold, crucible, furnace,
burner, heating element fixture, furnace lining, aluminum liquid
conduit, valve, etc.; good corrosion resistance, used as ball valve
and seal in chemical industry Rings, filters, heat exchanger parts,
etc.; good wear resistance, used as bearing balls, rollers, seat
rings, high temperature bolts, plunger pumps, sealing materials,
etc. in the mechanical industry; used in electronics, military, and
nuclear industries Used as circuit substrate, film capacitor, high
temperature insulator, radar radome, isolator, etc.
The company can customize all kinds of non-standard special-shaped
ceramic positioning pins and special-purpose special-shaped ceramic
positioning pins according to the customer's use environment, use
requirements and required material properties.
Product packaging
Packed in carton
FAQ
1. Are you a factory or a trading company?
Answer: We are a factory, welcome to visit our factory.
2. What is the price of your product?
Answer: Please do your best to inquire about each detailed
requirement including quantity, size, color, packaging, etc., then
we will give you an accurate quotation at the first time.
3. How to guarantee the quality of the products we ordered from
you?
Answer: The company has strong technical force, advanced production
equipment and perfect testing methods. The products have beautiful
appearance and quality assurance. The company has passed ISO9001:
2000 international quality system certification, and the product
sales network covers all parts of the country; more than 80% The
products are exported to Asia, Europe, and the United States, and
enjoy a good reputation in the domestic and foreign markets. The
company has strong technical support, excellent management
personnel, and perfect customer service. Regardless of product
quality or distribution services, they have won the praise of
customers.
4. Is it possible to make the product our own design?
Answer: Yes! We accept customized orders. And we also have an
experienced R&D team, and will do everything in accordance with
your expectations!
5. How long is your delivery time?
Answer: Negotiable
