Luoyang Anjing Intelligence Equipment are a global leader in high-temperature electric furnaces
High Alumina Push Plate
PRODUCT PARAMETERS
Description
High Alumina Push Plate
High Alumina Push Plate indispensable core drive kiln furniture in continuous high-temperature sintering production lines such as tunnel kilns and pusher kilns. During sintering, the pushers not only support V-groove plates or products to be fired, but also continuously withstand mechanical thrust from the rear, frictional resistance from the front, thermal radiation pressure from the high-temperature zone inside the kiln, and severe thermal shock from frequent entry and exit from the kiln within kiln passages several meters to tens of meters long.
To address these harsh conditions, our high-alumina pushers are made from premium high-alumina bauxite clinker as aggregate, refined through high-pressure molding and high-temperature calcination processes. The products possess extremely high thermal shock resistance and high-temperature compressive strength, maintaining a flat surface and structural integrity even in harsh environments with repeated rapid heating and cooling. This effectively ensures the stable operation of the propulsion system, significantly extends the service life of the kiln furniture, and reduces the overall operating costs for customers.
Product Features
- Excellent Thermal Shock Resistance
The formula is designed to balance low thermal expansion coefficient and high thermal conductivity, combined with a dense microcrystalline structure, enabling the pusher plate to withstand frequent temperature fluctuations at the inlet and outlet of the pusher kiln (repeated cycles from room temperature to 1650℃), effectively suppressing cracking, spalling, or microcracks caused by rapid heating and cooling.
- High High-Temperature Compressive Strength and Stable Load Bearing
After high-temperature firing, the mullite-corundum multiphase structure endows the material with excellent high-temperature load softening temperature. It maintains high mechanical strength even under prolonged high temperatures of 1650℃, resisting the strong extrusion pressure during the pushing process and the heavy pressure of materials inside the kiln, ensuring that the pusher plate does not bend, deform, or break at high temperatures.
- Excellent Wear and Corrosion Resistance
The plate has high surface density and low porosity, possessing excellent wear resistance. Exhibiting excellent wear resistance during prolonged contact with the kiln furniture base and tracks; it also effectively resists the erosion of alkaline volatiles or trace impurities in the kiln atmosphere, delaying material performance degradation.
- Long service life and low overall cost
Based on the combined advantages of thermal shock resistance, high temperature resistance, and wear resistance, our high-alumina pusher plates have an extremely long service life under normal operating conditions. Stable dimensional change rate reduces downtime losses from frequent kiln furniture replacements, providing strong support for customers to achieve efficient, continuous, and low-cost large-scale production.
| Project | Index |
|---|---|
| Al₂O₃（%） | 87.78 |
| SiO₂（%） | 11.9 |
| Fe₂O₃（%） | 0.08 |
| Na₂O（%） | ≤ 0.3 |
| Using temperature（℃） | 1650 |
| Thermal expansion rate（×10⁻⁶） | 5.5 |
| Show porosity（%） | 13 |
| Volume density（g/cm³） | 2.99 |
Scope of Application
- Applicable Equipment: Propulsion drive systems for high-temperature pusher kilns, tunnel kilns, and shuttle kilns.
- Applicable Operating Conditions: Long-term operating temperature 1650℃, short-term maximum operating temperature up to 1680℃.
- Suitable Scenarios: Used as a support base for V-groove plates or saggers for continuous batch sintering of zirconia ceramic inserts, sleeves, alumina ceramic tubes, magnetic materials, electronic ceramics, and other products.
Company Profile
A professional enterprise specializing in heat treatment technology services and the R&D, manufacturing, and sales of high-temperature electric furnaces.
The company focuses on developing high-temperature electric furnaces covering a full temperature range of -100℃ to 2600℃. Its products include experimental electric furnaces, vacuum atmosphere furnaces, industrial kilns, and medium-frequency induction heating equipment. Main products include box furnaces, tube furnaces, lifting furnaces, pusher kilns, bogie furnaces, rotary kilns, tunnel kilns, and various specialized medium-frequency furnaces.
The company adheres to technological innovation and has passed ISO9001 and EU CE certifications. It owns 21 registered trademarks, 29 patents, and 27 software copyrights.
Payment Methods
TT
Shipment Methods
The electric furnace is packaged in thThe electric furnace is packaged in three layers: first wrapped in foam paper, then wrapped in plastic film, and finally packed in a wooden crat.
Frequently Asked Questions (FAQ)
- During frequent pusher operation, chipping easily occurs at the edges and corners. How does your product address this issue?
Our high-alumina pusher is designed with increased density at the edges and corners, and a special binder system enhances the bonding strength between particles. We also recommend that customers perform proper kiln drying before first use to avoid hidden damage caused by rapid initial temperature rise, significantly reducing the probability of edge chipping.
- Will the pusher deform or warp after long-term use in the kiln?
Our products exhibit excellent high-temperature creep resistance. Under standard loads up to 1650℃, the permanent linear deformation rate of the pusher is extremely low. If the kiln temperature distribution is severely uneven or the pushing pressure is abnormally high, we recommend adjusting the pushing speed according to the specific kiln conditions. We can also provide customized solutions with reinforcing rib structures based on your kiln pusher dimensions.
- How does your company ensure the overall smoothness of the pusher when used in conjunction with V-groove plates?
The upper surface of the pusher plate undergoes precision grinding, with strictly controlled flatness tolerances. The pusher plate has a high degree of contact with the bottom of the V-groove plate, preventing wobbling during the pushing process. We can also design the pusher plate surface to match the specific dimensions of the customer’s V-groove plate bottom to achieve optimal contact stability.
- How to determine if the pusher plate has reached its replacement cycle?
When the pusher plate surface shows through cracks, severe warping causing the upper kiln furniture to tilt, or wear exceeding 15%-20% of its initial size, timely replacement is recommended. Our company can provide technical reference data for estimated service life based on the customer’s production output and pushing frequency.
