Zirconia cooling basin top pin

Zirconia cooling bowl ejector pin is a precision component made of high-purity and high-strength zirconia ceramic material, mainly used in the ejector system of plastic injection molding molds. Its excellent high temperature resistance, wear resistance, and insulation performance can effectively solve the core problems of low cooling efficiency, short lifespan, and unstable product quality faced by traditional metal top pins in high-speed and high-temperature molding processes. It is an ideal choice for achieving high efficiency and high-quality precision injection molding production.

Core Product Advantage: Why Choose Zirconia Cooling Basin Top Needle?
The performance advantage of zirconia cooling basin top pins lies in their unique material science properties, which have a disruptive improvement compared to traditional metal top pins such as SKD61 and high-speed steel.

1. Excellent high temperature resistance and insulation
   Low thermal conductivity: The thermal conductivity of zirconia ceramics is much lower than that of metals, which can effectively block the heat transfer from the mold hot runner or high-temperature melt to the ejector pin plate.
   Stability performance: It can maintain its excellent mechanical properties and dimensional stability even in environments with continuous working temperatures up to 800 ° C, without the risk of annealing or softening.
2. Extremely high hardness and extraordinary wear resistance
   Ultra high hardness: The Vickers hardness of zirconia ceramics can reach over Hv1.250, far exceeding that of quenched tool steel.
   Extended lifespan: It has strong resistance to abrasive plastics such as fiberglass and mineral fillers, with a lifespan 5-20 times longer than traditional metal top pins, significantly reducing replacement frequency and maintenance costs.
3. Excellente résistance mécanique et ténacité
   High flexural strength: Through phase transformation toughening technology, zirconia materials have extremely high flexural strength (≥ 1000MPa), which can withstand the huge ejection pressure and lateral stress during injection molding, and have significantly better fracture resistance than other ceramic materials.
4. Excellente résistance à la corrosion et stabilité chimique
   It is inert to most acidic/alkaline gases generated by chemical solvents and plastic decomposition, and never rusts, especially suitable for molding environments such as PVC and flame retardant materials that are prone to producing corrosive gases.
5. Extremely low friction coefficient and self-lubricating properties
   The surface smoothness is extremely high, the friction coefficient is low, which can reduce the adhesion phenomenon during the ejection process, ensure smooth ejection action, protect the mold and improve the surface quality of the product.

Core problem solved: Technological innovation starting from pain points
This product provides solutions directly for the following key pain points in injection molding production:
Problem 1: Low cooling efficiency in the ejector pin area, affecting the production cycle
Solution: The insulation properties of zirconia prevent heat from diffusing through the ejector pin to the ejector pin plate, allowing the cooling effect of the cooling system to be concentrated on the product itself, significantly reducing cooling time and improving production efficiency.
Problem 2: The ejector pin is prone to wear and breakage, resulting in high maintenance costs
Solution: With its extraordinary wear resistance and high strength, zirconia ejector pins greatly extend their service life, reducing downtime and spare parts costs caused by ejector pin damage.
Problem 3: Defects such as “top white” and “stress whitening” appear on the surface of the product
Solution: Low friction coefficient and insulation prevent local overheating and adhesion between the ejector pin and the product, effectively eliminating appearance defects caused by stress concentration during ejection and improving yield.
Problem 4: The ejector pin gets stuck and does not move smoothly under high temperature conditions
Solution: The dimensional stability and low thermal expansion coefficient at high temperatures ensure a consistent fit gap between the ejector pin and the mold hole, preventing jamming caused by thermal expansion.

Principaux domaines d'application
The zirconia cooling bowl top pin is an essential component for the following high demand injection molding applications:
Engineering plastic components: molding of high-temperature engineering plastics such as PA, PPS, PEEK, etc.
High filling materials: composite materials such as glass fiber reinforcement and mineral filling are formed.
Optical lenses and precision components: products that require extremely high surface stress, such as lenses and light guide plates.
Medical devices and food packaging: require a clean molding environment that is free from contamination and rust.
Industrie automobile : components such as engine peripherals and connectors that require high temperature resistance and long lifespan.

Professional customized services: meet personalized production needs
We are well aware that standardized products cannot meet all application scenarios, so we provide comprehensive customized services:
Size customization: Non standard diameters, lengths, pot diameters, and pot depths can be customized according to customer provided drawings.
Structural customization: Provides various head shapes (such as flat head, umbrella head), cooling channel design, etc.
Material grade customization: Provide zirconia materials with different toughness and wear resistance grades to adapt to specific mechanical and thermal loads.
Collaborative development: Our engineering team can collaborate with your mold design department to optimize the ejection system from the design end and achieve maximum performance.

The zirconia cooling bowl top needle represents an important evolution in injection mold ejection technology. It systematically solves the efficiency, quality, and cost problems that have long plagued the precision injection molding industry through innovation in materials science. Choosing it is not only about choosing a more durable component, but also about choosing a reliable solution dedicated to enhancing overall production competitiveness.

Brudeze Ceramics fournit et vend une large gamme de verre de quartz de haute qualité, y compris des céramiques d'alumine, des céramiques de zircone, des céramiques de nitrure de silicium, des céramiques de nitrure d'aluminium, des céramiques de carbure de silicium, des céramiques de carbure de bore, des biocéramiques, des céramiques usinables, etc. Nous pouvons répondre aux exigences de personnalisation de divers produits céramiques.