Concrete Sawing | Vic Sawing

How To Use Your Concrete Grinding Tools

Concrete floors have become extremely popular over the years and have become more common in commercial and residential settings. One of the main attractions of this floor type is that it does not require a lot of maintenance, but it does require daily cleaning and care to retain its shine.

Polished concrete is achieved using a specialized machine that strips the old and soiled concrete to unearth a shiny and new layer. To achieve polished concrete, concrete grinding is necessary, and this necessitates the correct equipment. Here are the different grinder types that can assist you in grinding your own concrete floors.

Concrete Grinding Tool Types

1. Hand-Held Grinders

These grinders are smaller and mainly used for grinding work that is minor. These tools are dustless with one head and measure between 5 to 7-inches in diameter. This tool is versatile and quite common and mainly used for domestic purposes. You can also use a hand-held grinder to remove irregularities or paint from your concrete floors or surfaces. This tool is unable to take the place of the walk-behind machines that are mainly used to clean larger concrete sections.

2. Multiple-Held Grinders

These grinders feature horizontally-rotating discs which perform a variety of tasks. One of the most important aspects of these grinders is there different attachments that can be attached according to your requirements. These attachments are numerous and designed to perform a variety of different applications.

3. Dustless Grinders

These grinders come with dust covers that serve the purpose of discarding dust that collects inside the cloak. The grinders offer you a way to save time you would have spent cleaning and offer numerous features that allow you to perform tasks efficiently and gracefully.

Concrete Sawing Melbourne | Vic Sawing

Instructions On How To Grind Concrete

The grinding machines designed for this specific purpose come equipped with specialized disks that are embedded with diamond-bits that have the abilities to grind the concrete down and to achieve a desirable shine. This tool type makes use of polishing disks of a fine-grit to provide a smooth and sleek appeal to your floors.

To begin with, coarser grits are attached to the machine to drain-out flaws and minor stains. This tool prepares the floors for further cleaning and smoothing. Once this stage is completed, the process can take up to 3 to 4 passes to ready the floors for a final polish. These processes depend entirely on the concrete type. Certain concrete types achieve their best shine with less cleaning, while tougher concrete can take more counts to achieve a polished shine. The advanced stages of polishing can necessitate polishing disks that have finer grits of between 1800 to 3500 grits.

To begin with, start with 1800 grits polishing disk, and turn on your water hose to apply around a ½ inch of water across a 5-foot area. Switch off the water supply, followed by running your concrete grinder over the area until the water has completely dried up. Now move onto the next section of flooring until the entire area has been covered using the same methodology.

Once you have completed this step, first unplug your concrete appliance and attach a finer grit disk following the very same process as mentioned above to achieve the next level of shine and polish. Let the tool pass over the wet area and ensure the water has dried out which will leave the floor shiny and completely even. Follow the steps until you have successfully polished the entire area of flooring.

Switch off the machine again and now attach the 3500- grit polishing disks and follow the same steps again. It is important that you ensure that the floors are wet every time you use the different concrete-polishing tools. This last disk should provide the highest glossiest shine that you have been looking to achieve. Once the desired shine has been achieved, mop the area clean.

Dry And Wet Methods Of Concrete Grinding

Concrete grinding involves 2 different methods that include wet or dry. With the wet method, the use of water is needed in order to cool off the diamond-grits and to clean the dust that is created from the grinding process. For this method of grinding, the water serves the purpose of a type of lubricant that decreases friction and increases the life-span of the polishing tools and equipment, especially the disks that can melt from the extremely high temperatures.

The dry method of concrete grinding involves a tool that comes equipped with a separate-provision that retains the dust created inside a cover. This ensures no mess is left behind. In many cases. A combination of both methods is used to grind concrete to the desired and finest shine on the floors or concrete surfaces. In most cases, it is advisable to use dry grinding to start off with and then move onto wet grinding to finish and clean the areas completely.

Understanding Bonds

The most important understanding when you work with metal-bond tooling is to know what these bonds are. This is an important factor to ensure you get the very most from your tools. It is also important to understand that concrete has a variety of differences, and the main difference is the hardness. The hardness of a concrete is typically measured using either a scratch test or a PSI.

The different bonds have been designed to work with varying levels of concrete hardness. These bonds are what wear down as you are grinding to expose the diamond grits that perform the task of grinding. If you are using the incorrect bond you run the risk of burning through the tool to fast or glazing over. For this reason, ensure you are using the correct bond to match up to the hardness of the concrete.

Special Precautions

It is very important to make sure that your polishing equipment is turned off and unplugged at the wall before you change the grit-polishing disks in order to avoid the risks of a possible electrical shock. It is also important to wear the right gear. This includes long overalls, rubber boots and gloves to prevent the risk of damages or harm that can come to your legs and hands due to the dust and heat. Before you start, also check your grinding tools for any missing components, chips and noticeable cracks.

EndNote

Need more advice? You can always give your local Concrete Sawing Experts for more detailed information and tips!

laser cutting | Lightning Laser Cutting

Melbourne Entrepreneurs Use Lasers To Assist In the Cutting of Material

During many manufacturing processes, it is required to cut metal, wood, glass, and other hard materials into intricate and definite shapes, so that they can be properly utilized to form the required items. Traditionally, such cutting has always been carried out through the use of knives, saws, shears and other blades. Modernisation led to the use of spinning and reciprocating blades to take away the drudgery of these cutting operations. Technology further developed to use beams of concentrated light, called lasers, to make any cutting operation easy and accurate.

 

Laser cutting is a process that is more efficient than the mechanical cutting and tooling, and even costs less, reduces wastage and is more accurate. Most laser cutting operations are controlled by software and this digital control allows for a vast number of cutting paths and patterns that can be easily changed, something that is not easy to do on other mechanical machines like saws or lathes.

A laser cuts the material by melting and burning it and the vaporization of this material leaves edges that are clean and sharp. A laser has been used to cut plastics, paper, and paperboards, textiles, abrasives, and photovoltaics, besides metals, wood, and glass.

 

Laser Cutting | Lightning Laser Cutting

Laser beams are the result of the stimulation of lasing material, often CO2 with the use of lamps or electrical discharges. The stimulating material is then reflected off a mirror till it has enough energy to escape as a beam of light that becomes visible. This visible light is then focused as a beam through the use of a lens. The beam needs to first pierce the material to be cut before it can start the cutting operation. The rotation of the beam polarization helps to maintain a smooth edge during cutting.

 

Laser beams use two methods, which are vaporization or melting and blowing the material. In vaporization, the heat brings the surface of the material to a boiling point and creates a hole. The hole becomes deeper as the vaporization erodes the edges or walls of the hole. This method is largely in use for materials that do not melt, such as thermoset plastics, carbon, and wood. In the second method of melt and blow, the melted part requires being blown away by a jet of gas. You will find this method of laser cutting used where metals need to be cut.    

 

Laser cutting is a technique that is in use in all major technologically advanced countries and you will find it being extensively used in Melbourne, Australia. It has many advantages that make it superior to mechanical cutting. It requires less labour and this advantage has an ability to reduce costs. Laser cuts are more precise, and there is no wearing out of the cutting edges as you will find in knives, saws, or blades.

The cut material will also never bend or warp, an action that some mechanical cutting will induce due to pressure or heat. Laser cutting concentrates energy at a spot and allows the energy to be applied directly where it is needed. In mechanical cutting, the cutting action produces a heat zone, which can affect the material being cut.       

 

The power required for laser cutting can depend on the material to be cut. Thin materials that are not metallic will require an average power of 150 watts, with a peak power of 450 watts. Thicker materials (non-metal) will require up to 500 watts with a peak power of 1500 watts.

The laser cutting of metals require lasers of high power that can go up to 1000 watts and may require peak power of 2500 watts. Where thin metal sheets are required to be cut you can use 150-watt lasers along with oxygen gas to assist in the cutting.   

 

Melbourne entrepreneurs who need to work with plastics, paper, cardboard, wood, metal, glass and even leather prefer to use laser cutting as it leads to work that is very precise. Once a pattern is programmed into a laser cutter, you will get exact copies of the pattern for any number of repetitions, without any need to change tools.

The edges of laser cut items are clean and do not require any further finishing. Patterns can be highly detailed and the quality of work produced will always be of a high standard.