Dongjin Precision Tools_Diamond Tumbler Manufacturer

Focus on the research and development of high-precision diamond grinding wheels, diamond tools, and diamond measuring tools.

Pursuing quality, service first

We have rich engineering, design, and manufacturing capabilities, focusing on the research and development of better molded diamond rollers, providing long-term technical support to our customers and maintaining the stability of their mass production.

Dongjin Precision Engineering, ingeniously crafted by nature.

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Products

Focus on the development of high-precision diamond rollers, diamond tools, diamond measuring tools

Diamond Sintered Roller

Diamond grinding wheels, also known as diamond dressing wheels or diamond wheel dressers, are tools used for dressing grinding wheels in large-scale shaping and grinding. They can replace single crystal diamond pens for dressing wheels, significantly improving production efficiency and achieving higher surface quality and precision of the processed parts.

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Diamond Sintered Roller

Diamond grinding wheels, also known as diamond dressing wheels or diamond wheel dressers, are tools used for the dressing of grinding wheels in large-scale molding and grinding operations.

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Diamond grinding wheel

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Diamond grinding wheel

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About Dongjin

Create the future with integrity · Win trust with excellent quality and quality service

Henan Dongjin Precision Tools Co., Ltd. was established in 2018 with a registered capital of 10.01 million yuan. The company is located in Luohe Demonstration Zone. The company fully introduces advanced powder sintering and precision electroforming diamond roller manufacturing technology and technology, and specializes in developing high-precision diamond rollers, Diamond tools, diamond measuring tools. Adhere to innovation, improvement and improvement, and serve in the fields of machining, bearing processing, auto parts manufacturing, tools and measuring tools, aerospace, etc, the products are mainly used in automobile parts manufacturing, various bearing industries, textile machinery gears, petroleum machinery, cylinder heads, pistons, piston rings, bearing bushes, electric vehicles, sewing machines, electric tools, work volume and cutting tools industries, aviation industry, Abrasive mold industry, precision screw guide rail and other batch forming processing and non-ferrous metal finishing enterprises.

Our Advantage

Focus on the development of high-precision diamond rollers, diamond tools, diamond measuring tools

Superb Technique

Comprehensive introduction of advanced powder sintering and precision electroforming diamond roller manufacturing technology and technology, professional development of high precision diamond roller, diamond tools, diamond measuring tools.

Functional Diversity

Adhere to innovation and improvement, service in machining, bearing processing, auto parts manufacturing, tools, aerospace and other fields.

Product Stability

We have rich engineering, design and manufacturing capabilities, focusing on the research and development of better shaped diamond rollers, providing customers with long-term technical support and maintaining the stability of customer mass production.

Imported Products Supplier

With the research and development of diamond rollers and high-finishing capabilities, the company has become a supplier of high-end customers to replace imported products, Dongjin Seiko, ingenious.

Blog

Fresh information, allowing you to fully understand the East Precision

Aug 16,2021

What do diamond tools include?

In recent years, as the applications of diamond tools have become increasingly widespread, their development has accelerated. Today, let's recall what diamond tools are present around us! Diamond tools refer to products made from diamond grit and micro-powder as cutting and grinding materials, aided by binders or other auxiliary materials, which have certain shapes, properties, and uses. Diamond tools can be classified by purpose into: (1) Abrasives including bonded abrasives, coated abrasives, and loose abrasives such as grinding wheels, sanding sheets, grinding stones, grinding heads, sand belts, polishing pastes, etc. (2) Cutting tools divided into two categories: one category is for cutting granite, marble, and concrete.

Mar 18,2022

Issues to pay attention to when grinding valve lock grooves with diamond grinding wheels

Using diamond grinding wheels to dress the grinding wheel, the profile is opposite to the required wheel profile, and it moves in the same direction as the wheel being dressed, shaping the wheel into the desired form. The dedicated grinding machine for lock clamps uses diamond wheels to dress the grinding wheel, which is then used to grind valves. The diamond wheels we use are coated with a layer of uniformly distributed diamond particles on a steel substrate through electroplating. When using them, two points must be noted: First, when loading and unloading the diamond wheel, gently tap with a copper rod to prevent diamond particles from falling off. Second, before dressing the grinding wheel with the diamond wheel, it is essential to adjust the relative position of the diamond wheel and grinding wheel in manual mode. For example: The automatic compensation amount for J4-048 lock clamp grinder is 0.01mm with a compensation amount of 50mm. To meet this compensation amount, a grinding wheel grit size of 120# is generally selected. When grinding lock clamp grooves, we dress the grinding wheel once every 20 products, taking 30 seconds for dressing time and maintaining a dressing line speed ratio of 0.59. Sampling tests show that surface roughness Ra is between 0.63 and 1.25μm, and shape and positional accuracy are within 0.03mm, fully meeting customer requirements. Practice has proven that one diamond wheel can produce 60,000 to 80,000 qualified products. The precision of lock clamp grooves mainly relies on the accuracy of the diamond wheels. As a core component of lock clamp groove grinders, the design of its profile is particularly important. Using diamond wheels produced by Dongjin in Henan for dressing grinding wheels ensures high precision and long service life while achieving good surface roughness in workpiece processing, making it especially suitable for mass production.

Aug 16,2021

Grinding Principles

A discipline that studies various physical phenomena and their intrinsic connections between grinding tools and workpieces during the grinding process. The research content of grinding principles mainly includes the process of chip formation, grinding force and power, grinding heat and temperature, grinding accuracy and surface quality, grinding efficiency, etc., with the aim of gaining a deeper understanding of the essence of grinding and thereby improving or creating grinding methods. The study of grinding principles began in 1886 when C.H. Norton and C. Allen from the United States collaborated to study grinding wheels and processes. Twenty years later, they established principles for correctly selecting wheel types and speeds; at the same time, they discovered that in order to improve grinding efficiency and accuracy...

Aug 16,2021

Australian researchers use 3D printed diamond implants for biomedical and orthopedic applications.

Researchers in Australia have made breakthrough progress using the power of diamonds, potentially revolutionizing the way the human body accepts biomedical implants. Researchers from RMIT University successfully coated 3D printed titanium implants with diamonds. This is the use of 3D printed diamond implants for biomedical and orthopedic applications, involving surgeries related to the human musculoskeletal system. Although titanium provides a fast, accurate, and reliable material for medical-grade and patient-specific implants, our bodies sometimes reject this material due to compounds on titanium that prevent effective interaction between tissues and bones with biomedical implants. Synthetic diamonds offer a cost-effective solution to this problem. This breakthrough was achieved by biomedical engineer Dr. Kate Fox and her team at RMIT's School of Engineering. The coating was produced using a microwave plasma process at the Melbourne Nano Manufacturing Centre. The combination of titanium scaffolds with diamonds forms a biomaterial. "This technology will take several more years to launch; many steps need to be taken before it can be used by patients," Fox said. "But what we have done is a key step in a long and incredible journey." Postdoctoral researcher Aaqil Rifai is collaborating with Fox on this new technology research, stating, "Diamonds are very effective because carbon is a major component of the human body. Carbon has incredible biocompatibility." Rifai added, "Our bodies easily accept diamonds and use them as platforms for complex material interfaces." In addition to orthopedics, diamonds are also used to coat cardiovascular stents—catheters that help keep heart arteries open—as well as in bionics and prosthetics. Currently, researchers are focusing on how to apply this technology in orthopedics. "3D printing is a groundbreaking revolution in modern times. Through 3D printing, we can design specific medical-grade implants. This technology is fast, accurate, reliable, and labor-saving," Rifai said: "The scalability of 3D printing is rapidly increasing; therefore, we can foresee that diamond coatings will become increasingly common in orthopedics in the near future." Diamonds are one of the special materials found in nature with properties such as hardness, low friction coefficient, high elastic modulus, high thermal conductivity, high insulation properties, wide bandgap, high sound propagation rate, and good chemical stability. Although natural diamonds possess these characteristics, they have only existed as gemstones; their variability and rarity greatly limit their applications. However, CVD diamond films prepared by Luoyang Yuxin Diamond combine these excellent physicochemical properties at a lower cost than natural diamonds and can be fabricated into various geometric shapes with broad application prospects in industries such as electronics, optics, and mechanics.

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hndongjin@126.com

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Southwest corner of intersection of Zhongshan Road and Longjiang Road, Urban-rural Integration Demonstration Zone, Luohe City, Henan Province

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