三方機械工業股份有限公司

In the field of materials engineering and conveying technology, true breakthroughs are rarely achieved overnight. They are the result of years of dedication, relentless challenges, repeated trials, and an unwavering commitment to safety and quality.

We have a valued customer with whom we have worked for over half a century — a leading pioneer in the battery industry. Renowned worldwide for their battery manufacturing technology, they hold a commanding position in the global market. For decades, they have relied on our wear-resistant spiral elbows in their conveying systems to transport highly abrasive special materials, achieving over 25 years of stable operation. They have also consistently used many of our other systems and equipment, building deep trust and collaboration with us.

However, as lithium battery technology advanced into the high-energy-density ternary era, new challenges arose:
Even the slightest trace of metallic contamination — whether from particles or ions — can cause battery self-ignition or even explosions, leading to severe human and property losses.

This flagship customer presented us with a near-impossible mission:

“Upgrade the metal wear-resistant spiral elbow to a fully ceramic version with zero risk of metallic contamination, while maintaining its superior wear resistance.”

Ceramic conversion — while it may sound simple — is in reality an exacting, cross-disciplinary challenge. Ceramics offer exceptional wear and corrosion resistance, but are inherently brittle, with extremely demanding forming and sintering conditions. Even the smallest dimensional deviation, sintering temperature fluctuation, proportion imbalance, uneven grain distribution, or micro-cracks can result in fractures, deformation, or product rejection. We selected well-known high-performance ceramic base materials available on the market and combined them with our proprietary forming and sintering processes to maximize the material’s potential.

Most importantly, the wear resistance of this spiral elbow is not solely dependent on material hardness. Instead, it is achieved through a precisely engineered spiral cavity design based on the Bernoulli principle (Q=AV). Within the elbow, a natural pressure chamber forms, enabling smooth directional change of conveyed materials through streamlined airflow and controlled pressure variation. This minimizes direct high-energy impacts with the wall surface, significantly reducing wear, particle breakage, fiberization, and pressure loss. As a result, the ceramic elbow delivers stability and safety beyond that of conventional metal elbows when handling fragile, contamination-sensitive, high-value materials.

After extensive testing and repeated validation, we finally produced a ceramic wear-resistant spiral elbow that meets — and exceeds — the customer’s demanding requirements:

• Zero metallic contamination risk – Completely eliminates release of metallic ions or particles, ideal for ultra-sensitive battery material conveying
• Outstanding corrosion resistance – Suitable for a wide range of chemically harsh materials
• Fluid dynamics-optimized design – Reduces wear and energy loss
• Long and stable service life – Special forming and sintering processes ensure smooth inner walls and precise dimensions, reducing conveying resistance, material residue, and maintenance needs

This product is not merely a technical upgrade — it is the embodiment of a safety promise.
The ceramic wear-resistant spiral elbow offers a safer, longer-lasting solution for battery material conveying systems and sets a new benchmark in the global battery manufacturing industry.

This is the story of half a century of trust, and a successful challenge to the limits of engineering.
Today, we proudly present this masterpiece to the world, because we believe that true safety and quality are born from the determination to keep moving forward, even after countless failures.