Zhongnan Diamond: New Diamond Patent Granted

Release date:

2025-08-03

On July 30, information from the National Intellectual Property Administration revealed that Zhongnan Diamonds The limited company has obtained a patent titled "A Large-Cavity System." Diamond "Workholding Fixture for Lateral Cutting of Composite Columns" Patent , Authorization Notice No. CN223161155U, application date: September 2024.

The patent abstract describes a lateral cutting fixture for large-cavity diamond synthesis columns. It features an upper cup, a lower cup, and a base positioned at the bottom of the lower cup. The lower cup is inserted into the upper cup with an interference fit, creating a secure, cup-shaped interlocking structure. Both the upper and lower cups are equipped with limited-positioning anti-misalignment slots to ensure proper alignment of the core column during insertion and compression. Additionally, the top of the upper cup protrudes downward, forming an upper cutting head that precisely meshes with the lower cutting head. This design effectively leverages existing hydraulic section-processing equipment, significantly boosting the first-time success rate of cross-section cuts on large-cavity diamond synthesis columns. At the same time, it reduces labor intensity in the process, maintains high-quality section-cutting outcomes, enhances the clarity of synthesized diamond quality for easier production control, and minimizes material waste by cutting down on fragmented debris and wasted abrasive sand.

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Pore-Size Control in Porous Magnesium Rings and Its Impact

As a functional material, the performance of porous magnesium rings is closely tied to their internal pore structure. Porosity, a key parameter that measures the proportion of void space within the material, directly influences the material’s physicochemical properties and determines its suitability for various practical applications. By carefully controlling porosity, it’s possible to achieve targeted optimization of material performance to meet specific requirements. From a mechanical perspective, changes in porosity alter the material’s density distribution and load-bearing capacity. Higher porosity reduces the apparent density, leading to lighter overall weight—but it may also compromise compressive strength. This characteristic makes such materials particularly valuable in applications where lightweight design is critical. However, in scenarios involving significant mechanical loads, maintaining structural integrity requires precise control over pore size and distribution. On the functional level, porosity creates a network of pathways that facilitate efficient mass transfer. Increasing porosity appropriately can enhance a material’s adsorption capacity and permeability, making it ideal for applications like filtration or as a catalyst support. Meanwhile, the presence of interconnected pores promotes rapid diffusion of electrolytes or reaction media, which is crucial for improving the performance of electrochemical devices. On the downside, excessively high porosity might weaken the material’s corrosion resistance, potentially leading to localized corrosion issues, especially in humid environments. Ultimately, the choice of fabrication process plays a pivotal role in precisely tuning the porosity of these materials.

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Storage precautions for porous magnesium rings

Porous magnesium rings, as a special type of metallic material, are widely used in industries and medical fields. Due to their unique physical structure and chemical properties, careful attention must be paid to environmental conditions during storage to ensure that the material’s performance remains unaffected. **Storage Environment Requirements:** Porous magnesium rings have stringent requirements for their storage environment, particularly regarding factors such as humidity, temperature, and exposure to light. The relative humidity in the storage area should be kept below 65%, and materials should never be stored outdoors or allowed to come into direct contact with rainwater or dew. If the warehouse floor is concrete, it’s essential to lay down a moisture-proof cushion layer to prevent ground moisture from seeping into the material. In terms of temperature, it’s recommended to maintain conditions between -5°C and 35°C, avoiding prolonged exposure to high temperatures (above 40°C) or extreme cold combined with freezing-thawing cycles (below -10°C). High temperatures can accelerate the aging of the surface oxide layer, while low temperatures paired with moisture may lead to condensation or even ice formation on the surface, potentially causing corrosion once melted. Additionally, the warehouse should be well-ventilated naturally, but avoid exposing the material to strong, direct winds. Direct sunlight should also be avoided. If temporary outdoor storage is unavoidable for up to 72 hours, the material must be carefully covered with a double layer of shade cloth and waterproof tarpaulin. **Moisture-Proof and Corrosion-Resistant Measures:** Moisture protection is critical when storing porous magnesium rings. Use tightly sealed packaging materials during storage, and regularly inspect containers to ensure they remain airtight and free from leaks or damage. After opening previously used packaging, promptly reseal it to maintain its protective integrity.

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Porous magnesium rings, as a bio-material with a unique structural design, have demonstrated significant application potential in both medical and industrial fields. Currently, optimizing their preparation processes and enhancing their performance have become key research directions in materials science. Among the fabrication techniques, powder metallurgy is currently one of the most widely used approaches. This method involves mixing magnesium powder with pore-forming agents, followed by compression molding and sintering to create the desired porous structure. Crucial process parameters, such as sintering temperature and duration, directly influence the material’s porosity and mechanical strength. Another popular method is the template-based approach, which utilizes removable template materials to precisely define the pre-designed pore architecture, allowing for more accurate control over pore size distribution. Additionally, the integration of 3D printing technology has opened up new possibilities for producing complex-structured porous magnesium rings, enabling customized pore designs through layer-by-layer additive manufacturing. Performance optimization primarily focuses on three key dimensions. First, structural characteristics are carefully tuned by adjusting the ratio and particle size of the pore-forming agents, resulting in a wide range of porosities—from 20% to 80%—with typical pore sizes ranging between 100 and 500 microns. This highly controllable porous structure not only ensures lightweight properties but also lays a solid foundation for advanced functional applications. Second, mechanical performance is significantly improved by incorporating appropriate alloy elements or employing hot isostatic pressing, boosting compressive strength to levels suitable for medical implant applications.

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Liaocheng Xinko Pyrophyllite Co., Ltd. is a company specializing in the professional manufacturing and processing of products such as automatic four-column hydraulic presses, diamond synthesis components, pyrophyllite stones, magnesia rings/cups, and graphite tubes.

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