What can you expect from diamond grinding stones and what not?

For diamond plates, it is often advertised that they are absolutely flat and cannot be hollow ground. The first part of this statement is only partially true, as absolute flatness cannot be achieved with every production method. However, it is correct that the finished stone cannot be hollow ground.

There are various manufacturing concepts for diamond grinding stones:

1. A flat-milled block of aluminum or steel is coated with diamond grains. This achieves the best flatness. The disadvantage of this method is the expensive and complex manufacturing process and the high material costs. Therefore, it is rarely used anymore.
2. Thin steel plates are coated with diamond stones. These steel plates are then glued to a flat substrate, usually aluminum. Here, the cutting method, deburring, and grinding before coating determine the result. For example, if cut with a laser, heat develops, which can lead to deformation of the material. This deformation is difficult to compensate for with a press bonding on a flat substrate. Therefore, cutting or sawing methods that prevent deformation are superior. Thinner plates also exhibit higher flexibility and adapt better when glued to a rigid substrate.
3. A plastic film or copper foil is coated with diamonds, and the underside is self-adhesive. These plates are highly flexible and adapt to any surface. This film can also be glued to rounded substrates, such as sanding blocks. The disadvantage of these soft substrates is that cutting tools can puncture the film, rendering the sander worthless. Therefore, one must develop a certain technique when sanding tools to prevent this.

We sell the diamond plates both with and without a substrate, as there are very different usage situations. For example, if one needs the sander on the go and wants to save weight and volume, one can do without the substrate but must accept that the flatness suffers. In addition, we offer diamond-coated copper foils that are flexible and self-adhesive. The advantages of a diamond grinding stone: Quickly grinding out notches and changing a bevel angle on plane irons and chisels Fast grinding with high material removal even in the medium grain range Grinding of HM, HSS, and PM steels, where other grinding stones fail The stone does not hollow grind, the existing flatness is maintained Can be used as a flattening block for Japanese water stones; we recommend grain size 140 The disadvantages of a diamond grinding stone: When extreme flatness of the surface is required, a freshly flattened Japanese water stone is superior When honing, i.e., in the fine range, the diamond stone is significantly inferior to a Japanese water stone A diamond grinding stone cannot polish surfaces, such as knife blades A note on service life: it cannot be compared to a stone that wears down and reveals new, sharp particles, but rather to sandpaper, which also has only a thin coating. The comparison is somewhat flawed because sandpaper wears down much faster, but the process is the same: at first, the grains feel very sharp, but only for a short time, then comes the medium sharpness, which lasts a long time, and at the end of the service life, the sharpness declines. The medium sharpness lasts a long time with monocrystalline diamonds. Use the diamond grinding stone with water; it will last longer!

A hammer crusher is a type of crusher equipment that can be used in sand making processes. Compared to other crushing equipment, hammer crusher has special advantages and disadvantages.

Goto Leading Diamond Tools to know more.

Hammer crusher advantages:

1.High crushing ratio: Generally, the crushing ratio of hammer crushers can reach 10 to 25, and in some cases, it can be as high as 50. This means they can effectively reduce large pieces of material into smaller particles in a single crushing process, improving work efficiency and reducing the need for multiple crushing stages.

2.High production capacity: Hammer crushers are designed to handle a large amount of material in a short period of time, making them suitable for high-volume production applications. Their high-speed rotation of the rotor and the impact force of the hammers enable efficient crushing, resulting in high output.

3.Uniform product size: The crushing action of hammer crushers ensures that the resulting product has a relatively uniform particle size distribution. This is beneficial for subsequent processing steps such as grinding, mixing, and separation, as it provides a more consistent feed material.

4.Simple structure and low cost: The structure of hammer crushers is relatively simple, consisting of a rotor, hammers, a casing, and a screening mechanism (in some cases). This simplicity leads to lower manufacturing and maintenance costs compared to some other types of crushers, such as cone crushers or gyratory crushers, which have more complex structures and require more expensive components.

5.Versatility: Hammer crushers can handle a wide variety of materials, including soft and medium-hard materials such as limestone, coal, gypsum, and shale. They are also suitable for crushing materials with different moisture contents, although the moisture content should generally not exceed a certain limit (usually around 10%).

6.Selective crushing: Hammer crushers have the ability to selectively crush materials based on their density. Materials with higher density are more likely to be crushed into smaller particles, while those with lower density may remain relatively larger. This selective crushing can be useful in separating different components of a material or in achieving a specific particle size distribution.

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7.Light weight and easy installation: Due to their relatively simple structure and lightweight design, hammer crushers are easier to install and transport compared to some heavier and more complex crushers. This makes them suitable for use in various locations, including small-scale mining operations or construction sites where mobility is important.

Disadvantages of hammer crushers :

1.Hammer head wear: The hammers in hammer crushers are the main wearing parts and are subject to significant wear and tear during operation, especially when crushing hard materials. The wear of the hammer head not only affects the crushing efficiency and product quality but also requires frequent replacement, increasing maintenance costs and downtime.

2.Not suitable for hard materials: Although hammer crushers can handle a variety of materials, they are not as effective in crushing extremely hard materials compared to some other crushers, such as jaw crushers or cone crushers. Crushing hard materials can cause excessive wear on the hammer head and other components, reducing the service life of the equipment.

3.Viscous material handling issues: When dealing with sticky or viscous materials, hammer crushers may experience problems such as clogging of the grate or screen. This can lead to reduced production capacity and even equipment breakdowns. Therefore, the moisture content and stickiness of the material need to be within a certain range for the hammer crusher to operate effectively.

4.Noise and vibration: The high-speed rotation of the rotor and the impact of the hammers can generate significant noise and vibration during the operation of the hammer crusher. This not only creates a noisy working environment but also may cause damage to the equipment and adjacent structures if not properly controlled.

5.Limited control over product size: While hammer crushers can produce a relatively uniform product size, the adjustment of the product size is not as precise as some other crushers, such as impact crushers or cone crushers. The discharge size of a hammer crusher is mainly determined by the gap between the hammers and the grate or screen, and the adjustment range may be limited. 

Baichy Machinery has a history of more than 20 years. It not only produces a full set of crushing and sand making equipment, but also provides EPC project general contracting services, including plant site selection and construction, production line design and installation, and production and operation technical training. Welcome to consult online to get your exclusive hammer mill crusher solution.

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