Coffee is of no use until it is finely grounded. To grind the coffee in the right size is the most crucial thing to do. We have thousands of grinding machines available in the markets to do this for us. But most of them cost a lot and barely deliver the results they claim. There are various types of grinders present in the markets like:
• Blade grinders
• Burr grinders
• Wheel burr
• Conical burr
There should be some basic features available in an ideal grinder. If you are also interested in buying a coffee grinder for yourself, then have a look t the following. An ideal coffee grinder:
• Should be cost efficient.
• Should have blades to produce different size grinding whenever required.
• Should be easy to clean up and maintain.
• Should be durable and made of high resistance material.
Grinding the coffee beans is something which requires expertise ad technique. Perfectly ground coffee beans are sold for thousands of dollars in the open markets. Mainly there are only two types of grinders, as blade grinders and burr grinders. The aroma, taste and pungency in a cup of coffee depend on the grinding technique incorporated. Freshly roasted coffee beans should be used in the coffee grinders, as studies have proved that if coffee beans are stored after roasting, their quality gets degraded automatically. It later on makes the cup of coffee to run sudsy. The two main types of grinders we were talking about have their individual merits and demerits. Blade grinders are the cheapest and easily available.
In blade grinders there is a blade inside the jar which spins rapidly and chops the coffee beans. It produces coffee flakes out of it which are uneven size. This way the user can only attain an inconsistent taste in coffee. Still people like blade grinders for coffee grinding as it makes the aroma of the beans get more accentuated. There are no settings to direct the machine about how fine or how coarse to grind the coffee beans contained. The user has to use own technique to get finesse out of this task. Coffee often gets a burned taste when ground in blade grinders, so people who like flavoured coffee might shift to burr grinders instead.
Burr grinders are also called as mills which crush the coffee beans uniformly. Burr grinders are further divided into two types, i.e. wheel burr and conical burr. Wheel burr grinders are less expensive and create too much noise while working. Whereas conical burr grinders are quieter and cleaner and are available in beautiful hand held models also. You may choose any one of the above said grinders as per your requirements and usage.
Concrete grinding machines are used to clean concrete and to remove coatings, epoxy, oil, chemicals, or paints from raw concrete. These machines are used for smoothing out bumps and other irregularities in both horizontal and vertical concrete surfaces. Concrete grinding machines work by using a grinding disc or wheel that is usually embedded with diamond chips. These ใบเจียร abrasive media help to cut the surface that is being designed to remove paint, coatings and surface contaminants.
Available in a wide range of configurations
To match specific job requirements, concrete grinding machines are available in a wide range of configurations. They are hand-held, dustless, walk behind, single head and multiple head.
Hand-held Grinders- They are the small grinders used specifically for edge work and for small jobs. Available in a dustless mode, they are usually 5 or 7 inches in diameter with a single head. It could be one of the most versatile and useful items in your tool chest. One can also use them to clean paint or irregularities from small sections of concrete. It can remove graffiti and worn coatings or paint and to roughen up floor surfaces in preparation for coating application. However, these machines can’t replace walk-behind surface preparation machines for large areas of concrete. But, they work excellently in tight areas where the larger machines can’t maneuver, such as in corners and close to walls.
Multiple-Held Grinders- Multiple-held grinders use horizontally rotating discs to perform a multitude of tasks. The key to their versatility are the grinding attachments. These grinding attachments are available in a variety of types and grits to suit different applications. They leave behind a smoother profile and while working on hard surfaces, they may polish rather than abrade the surface.
Dustless Grinders- While, dustless grinders use a dust shroud to separates dust collection system. This machine saves your time on cleanup, and allows other trades to perform in the same area at the same time. This is the best combination of grinding tools that will result in maximum performance and flexibility for minimum cost. You will need to own a good vacuum dust collector which is powerful and small with self-cleaning filters that vibrate to remove the concrete dust.
The following recommendations are for the contractors who are starting a business in this lucrative field of concrete grinding or who are just starting up and need the grinder and abrasive to prepare concrete floors.
To have the right grinder and abrasive for the job, be sure to consider the psi of the concrete surface, since concrete harden as it ages. The type of contaminant or coating that is being removed from the concrete. The scale of the job to determine the size of a tool needed. The hardness of the surface to ascertain the type of cup wheel, abrasive disc or cutters one should use.
The main reason for this expansive increase in diamond grinding machine is a reduction in physical fatigue and rest breaks. Even a masculine and experienced person has to take rest breaks, but the frequency of the break is much less when using grinding tools resulting in a flawless job.