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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.

Aug 16,2021

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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.

Mar 18,2022

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

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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

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