Product Title: High-Performance Industrial Grade Alumina Ceramic Double Headed Bolt for Extreme Environments
In the realm of advanced materials and precision engineering, the demand for components that can withstand extreme thermal gradients, corrosive environments, and high mechanical stress is more critical than ever. The Alumina Ceramic Double-headed Bolt represents a pinnacle in ceramic fastening technology, engineered specifically for industries where traditional metallic fasteners fail due to heat distortion, galvanic corrosion, or electrical conductivity issues. This product description delves into the intricate details of the Industrial Grade Alumina Ceramic Double Headed Bolt, highlighting its superior thermal shock resistance and structural integrity.
Overview
The core of this solution lies in the utilization of high-purity alumina ceramic material, typically exceeding 99% Al2O3 content, which provides exceptional hardness, wear resistance, and chemical inertness. Unlike standard metal bolts that may expand unevenly under temperature fluctuations, the Alumina Ceramic Double-headed Bolt maintains dimensional stability across a wide range of operating temperatures. This component is designed with two threaded ends, allowing for versatile mounting configurations without the need for additional nuts or washers, thereby reducing assembly time and potential points of failure. The specific variant known as the Thermal Shock Resistant Alumina Ceramic Double Headed Bolt is optimized through precise sintering processes to minimize internal micro-cracks, ensuring it can endure rapid temperature changes without fracturing. This makes it an indispensable asset in sectors ranging from semiconductor manufacturing to aerospace propulsion systems.
Key Characteristics
When evaluating the Industrial Grade Alumina Ceramic Double Headed Bolt, several distinct features set it apart from conventional fasteners. First and foremost is its outstanding thermal shock resistance. While many ceramics are brittle, the specialized formulation used in these bolts allows them to absorb sudden thermal stresses that would cause other materials to shatter. Secondly, the electrical insulation properties of the Alumina Ceramic Double-headed Bolt are unparalleled among non-metallic fasteners, making it ideal for applications requiring dielectric strength. Furthermore, the surface finish of the bolt is meticulously polished to reduce friction and prevent galling during installation. The industrial grade classification ensures that every unit meets rigorous tolerances for thread pitch and diameter, guaranteeing compatibility with standard machinery and equipment. Additionally, the chemical resistance of the material means it will not react with acids, alkalis, or molten metals, preserving the integrity of the joint over long periods.
The performance is superior to that of Alumina Ceramic & High Purity Alumina Ceramic.
Performance is not lower than that of Zirconia ceramic & Aluminium Nitride ceramic.
Detailed Description
The construction of the Alumina Ceramic Double-headed Bolt begins with the selection of ultra-fine alpha-alumina powder, which serves as the primary raw material. This powder is mixed with binding agents and formed using isostatic pressing techniques to ensure uniform density throughout the component. The subsequent sintering process occurs at temperatures approaching 1700 degrees Celsius, resulting in a dense, pore-free structure that maximizes mechanical strength. The double-headed design features symmetrical threads on both ends, which are machined after sintering to achieve micron-level precision. This post-sintering machining is crucial because it preserves the crystalline structure of the ceramic while creating the necessary geometric accuracy for reliable fastening. The Industrial Grade Alumina Ceramic Double Headed Bolt is available in various diameters and lengths to suit different load requirements. Its white, glossy appearance is not merely aesthetic but indicates a high degree of purity and lack of impurities that could compromise performance. The thermal shock resistant nature of the Alumina Ceramic Double Headed Bolt is achieved by controlling the grain size and incorporating minor additives that enhance toughness without sacrificing hardness. This balance allows the bolt to function effectively in environments where temperature swings occur frequently, such as in kiln furniture or furnace components.
Application Scenarios
The versatility of the Alumina Ceramic Double-headed Bolt makes it suitable for a multitude of demanding applications. In the electronics industry, it is commonly used as insulating spacers and standoffs in high-voltage equipment, where the Electrical Insulation Alumina Ceramic Double Headed Bolt prevents short circuits and leakage currents. In metallurgy, these bolts are employed in furnaces and kilns to hold refractory bricks in place, leveraging the Thermal Shock Resistant Alumina Ceramic Double Headed Bolt's ability to survive repeated heating and cooling cycles. The semiconductor manufacturing sector utilizes the Alumina Ceramic Double-headed Bolt.
AlUMINA TECH DATA
|
ITEM
|
UNIT
|
99.9 ALUMINA
|
|
Density
|
G/cm3
|
3.94
|
|
Bending Resistance
|
Mpa
|
500
|
|
Compressive Strength
|
Mpa
|
3300
|
|
Elasticity Modulus
|
Gpa
|
400
|
|
Shock Strength
|
Mpam/2
|
5.2
|
|
Vaporization Coefficient
|
M
|
12
|
|
Vickers Hardness
|
HV0.5
|
2000
|
|
Thermal Expansivity
|
10-6K-1
|
8.0
|
|
Conductivity
|
W/MK
|
28
|
|
Thermal Shock Resistance
|
AT℃
|
280
|
|
Maximum Service Temperature
|
℃
|
1750
|
|
20℃ Volume Resistance
|
Ω
|
≥1015
|
|
Dielectric Strength
|
KV/mm
|
30
|
|
Apparent Porosity
|
％
|
0
|
|
Permittivity
|
Er
|
10
|
|
Dielectric Loss Angle
|
tanδ
|
0.001
|
