Grit Blasting and Its Amazing Process to Clean Any Surfaces

You must have heard about Grit blasting and its effects?

 If you are looking for a process to clean out any surfaces of your belongings then you are in the right place. You can clean any surfaces through the Grit blasting process. Let's first clear up your mind about what is the Grit Blasting is and how does it function.

What is Grit Blasting?

Grit blasting, also known as Sand blasting is a mechanical process of removing dust, rust, and impurities from the surface of any material. It is performed with the help of any type of grit along with compressed air or water, thrown against the surface of the material at high speed.

It is performed when an object needs cleaning or roughening of the surface to obtain any coating. Grit blasting is done by two different styles, through pressure blasting and suction blasting.

Different types of Grit

There are many types of grit available depending on the surface of the material. The most important part of grits for performing grit blasting is that they should be extremely hard and dense to exert great pressure on the surface.

Aluminum Oxide Grit - It is very commonly used abrasive media. It is highly durable, used many times by recycling and it quite hard as compared to other grits.

Silicon Carbide Grit – It’s also considered as hard blasting media due to its angular grain shape. Silicon Carbide blasting results in sharp and neat cleaning of the surface.

Glass Cuts- The thing about glass cuts are that they are present in different variations from course to highly refined media but the work of both is excellent in giving the surface a new lustrous and reflective look.

Steel Grit- They are the most requested blasting media for its aggressive and effective work. Steel grits are known for their hardness and its angular shape.

Baking Soda- Sodium Bicarbonate is used as in medium and extra-large grit to remove grease, paint, stains, and rust on various surfaces like metal, aluminum, glass or any others.

How Does Grit Blasting clean all the surfaces?

Grit blasting is a process that uses different types of abrasive along with compressed air or water and is forcefully hit against the surface of the material at a very high speed. When these abrasives are hit on the surface with high speed, the collision results in the removal of various unwanted impurities that were laying on the surface.

So it basically removes all the garbage that was stuck on the against the surface and gives a new and reflective look to the material. Hence it can clean all the surfaces which are greased, corroded, contaminated or any others.

This process is used for cleaning or for preparing the surface for welding and also for adhesion of the coating. So it does both functions better than any other blasting process.

Who provides the best Grit blasting Service in India?

Quality Spare Center is a leading trader, supplier, exporter and the best service provider for Grit blasting and other Blasting processes. It gives superior customer service and satisfaction and gives your equipment a long life.

Source: https://shotblasting.org.in/grit-blasting-and-its-amazing-process-to-clean-any-surfaces.php

Sandblasting Services Providers in India

Sandblasting Services Providers

Short Overview of Different Parts of Shot Blast Machine

Shot Blasting is a process used for the treatment of surfaces with the assistance of high velocity steel abrasives. The shot blasting method aids in obtaining exceptional cleaning and preparation of the surfaces for the secondary finishing operations.

The process of shot blasting is commonly used for the purpose of the following:

• For cleaning of metals like: iron, steel, forgings, non- cast parts and many more.

• For mechanical cleaning of: sheets, wire, rods, coils, etc.

• For shot peening to alter the mechanical properties such as for increasing resistance to fatigue for springs, gears, etc.

• Preparation of surfaces for secondary operations like painting, coating, etc.

In general, the process of shot blasting focuses on throwing the abrasive particles at a high speed of 65 to 110 m/second in a highly controlled way at the material to be blasted and as a result removing the contaminates on the surface with the help of the abrasive impact. 

When the process of shot blasting was on its peak in the 1930s it was used with compressed air for propelling the steel shots and this method still remains in use today for cleaning of metal frames and weldments. The shot blast production lines (both manual and automated systems), only became possible after the introduction of the centrifugal wheel blast machines. The system of shot blasting with the centrifugal wheel has proven to be more productive than by the compressed air and achieves a better and more uniform finishing of the surface.

The criteria used for the selection process of the type of shot blasting system and machines depends on the size and shape of the parts to be blasted, the condition of the surface to be cleaned, the required final surface finish specification and the overall required process.

There are numerous companies which offer these types of shot blasting machines and equipment for different shot blasting processes. But, the question arises how should one determine which is the best machine for your effective as well as qualitative work?  

The Shot Blasting Machine

For understanding which is the best option, one must gain complete knowledge about the concept of the process as well as the machines that are used for the shot blasting process. 

Different Parts of the Shot Blast Machine

The shot blasting machine consists of six different parts:

• Blast Wheel

• Cabinet

• Work Handling Mechanism

• Elevator

• Separator

• Dust Collector

To determine the role each part of the machine plays in the shot blasting process it is important to acquire the complete knowledge about the sandblasting process and machine. The following is a detailed description of the function of each part of the machine in the shot blasting process:

1. The Blast Wheel

The wheel is the focal part of every centrifugal shot- blasting machine. The wheels help the abrasive particles which are projected through the centrifugal force from various types of turbine wheels. If the quality of the wheels is at an optimum level then the efficiency as well as the cleaning effect turns out to be great.

2. The Cabinet

Just like the blast wheel, the cabinet too is an important part of the shot blasting machine. As, the high speed of the abrasive particles have to be treated in a closed and vibration free cabinet. This helps in ensuring their strength as well as their durability, these cabinets are made with the assistance of superior quality of the steel material.

3. The Work Handling Mechanism

Most of the systems within the machine exist for conveying the parts which depends on the type, size and the quality of the items that need to be treated. There are a variety of types and designs of the shot blasting machines that are used for different working process like the Table Type Shot Blasting Machine, Hanger Type Shot Blasting machine, Tumb Type Shot Blasting Machine, Paver Block Shot Blasting Machine, Cabinet Type Shot Blasting Machine, Spinner Hanger Shot Blasting Machine, Spinner Hanger Double Door Type of Shot Blasting Machine, Stone Shot Blasting Machine and Coil Shot Blasting Machine.

4. The Elevator and Abrasive Recovery System

This part holds a special place in the machine and maintains a steady functioning of the machine by helping the machine to recover the used abrasives. The abrasives are recovered at the base of the cabinet with the help of a screw conveyor and are further delivered towards the base of the elevator, which then carries these abrasives to the separator for further action.

5. The Separator Section

The Separator plays an extremely important role in the abrasive blasting machine. This is the essential part that helps to clean all contaminants before abrasives enter into the blast wheel for reuse.

6. The Dust Collector

This is the final and the most important part of shot blasting machine. The dust collector is a part that is used mainly for the purpose of filtration. This important part helps in retrieving the dust filled air from the separator and from the dusty air that gets trapped in the cabinet ventilation system and releases clean air into the atmosphere for ensuring an environment that is pollution free.

If your industry demands the process of abrasive blasting and you are in a need of a great quality machine, then it is important to get a basic knowledge of the above mentioned parts. The analysis on the above mentioned parts help in developing an eye for the functionality of these parts before taking the final decision of which is best machine according to your needs and requirements. This is so because choosing the right type of machine can ensure efficient, quick and optimum level of cleaning for your surfaces.

Sand blasting is a difficult process and requires the use of professionally equipped techniques and equipment to employ this process correctly. To provide you with this efficient system of blasting services with the ideal shot blasting machine, Quality Spare Centre a leading trader, supplier, and exporter brings to you a range of metal shots and machines. Its efficiency has become the a highly acknowledge facet of this company in providing competitive services as well as machinery for the blasting and painting industries. A premium brand name in this industry with its niche variety of services provides accessories for protective coating industries as well.

Source: http://www.shotblasting.org.in/overview-of-different-parts-of-shot-blast-machine.php

A Guide to Understanding Steel Grit and Steel Shot

The technique of sand blasting has provided many different ways to clean up, strip, or even out the surface of different materials. Although the ancient mode of blasting- sand has now long been banned for usage due to its dangerous silicosis, there is still a huge range of much safer substances that help to create a perfect finish- be it the restoring of parts of a structure or just basic refurbishing of smaller items.

Blasting is essentially of two main types that are most commonly used, which include shot blasting and grit blasting. Both the blasting techniques use different types of materials but are often regarded as a part of sand blasting to provide an overall effect of their purpose.

To provide a cost effective and efficient blast cleaning operation, features such as a basic understanding of the characteristics of the steel blast cleaning abrasives, their selection as well as use and the knowledge of the blast cleaning machinery, its maintenance and key process control features.

Industries in the metal working business are the principal users of cast steel shot and steel grit:

·         Steel mills

·         Ferrous and Nonferrous Foundries

·         Forge shops

·         Metal Fabricators

Blast cleaning with the use of steel abrasives is a vital and critical operation at various different stages of the primary metal production.

Steel Grit and Steel Shot are two sand blast Medias that are most commonly used in today’s industries. These can be used for a huge variety of applications to meet different goal requirements. The following article will help you build a strong understanding about both these Medias.

What is Steel Grit?

Steel Grit is available in a variety of shapes and sizes that will allow in administering a variety of blast profiles for obtaining different results. This type of grit is angular in nature they way it has been created. This grit is ideal for helping to remove the contaminants from the surface of various products and it also creates a last profile for new coating to adhere to. The most common uses for steel grit are removing of mill scale, removing different degrees of coatings from the surface of products and a typical grit sizes that are most commonly used range between G25 – G80. The larger the number of the grits, the smaller will be the size of the actual particle of blast media.

These smaller particles then create a smaller blast profile on to the product on the other hand the larger particles (the ones that have smaller G numbers) will create a deeper blast profile. In an addition to the depth of the blast profiles the larger particles will show more effectiveness in the removal of heavy amounts of paint while the smaller lot of particles will be best suited for removing contaminants on lighter surfaces. The smaller particles with larger number like G80 grit will leave a 1 to 2 Mil profile and larger particles like a G25 will leave deeper profiles that range between 4 to 6 mils (this finding stands true when, all the other blast equipment settings remain the same).

An additional benefit attached to the steel grit is that it has the potential to be used multiple times before the requirement of replacing the grit arises. One can use mechanical blast media recovery equipment if you want to recover and use the media again. This allows the media to be used approximately 150 to 200 times before it needs to be replaced with a fresh blast media.

What is Steel Shot?

This shot is available in a variety of different sizes but is always designed in a round shape. This is a hard type of abrasive with a mohs scale of about 8.0 that is similar to the hardness of the grit. This shot is used for a vast range of processes where the primary use for its application is referred to as shot peening. Shot peening hahrdens the surface of the product being blasted by repeated striking of the surface with steel shot. These repeated striking makes the metal to compress that increases its strength. Some of the most common applications for this effect known as shot peening are manufacturing of gear parts, springs, turbine blades and cam shafts. Apart from shot peening the other areas of application that involve the use of such shot include which require maximum levels of energy transfer to effectively create a great surface profile. This includes applications such as concrete surface, rubber build up removal, epoxy and adhesive removal.

Just like the grit, these shot offer a lot of uses before the needing replacement mostly allowing about 150 to 200 cycles, depending upon the application one is using these blasting techniques for and assuming that the professional uses the ideal blast media recovery equipment. The sizing of the shots made from steel come in a large variety of sizes that range between s 110 – s 330. In contrast to the grits, here the larger the number of the shot, the larger will be the size of the steel shot, which means a shot of size s 330 will be larger than s 110. The larger shot are used for the removal of thicker coatings and for heavier steel peening too.

Thus to conclude, while selecting a blast media it is extremely important to understand the product you are planning to blast and the ultimate result you want to achieve after the blasting process is done. Based on these factors the decision is made of selecting the blast media as well as the blast equipment for a great execution of the project. If you find yourself confused while selecting the ideal blasting equipment or the media then Quality Spare Centre, a leading trader and exporter of a huge range of metal shots and the associated set of machinery and equipment will be proud to help you as they have been developing expertise in the field since 1990. Also, their efficiency has become a large reason for success in providing competitive services and machinery which makes us trust their word even more.

Source: http://www.shotblasting.org.in/understanding-steel-grit-and-steel-shot.php