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Blast barrels are available in three major variations. They differ from one another based on the type of control system, cabinet design, and specified industry application.
Manual roller barrel shot blasting machines
In manual roller barrels, operators have to control the machine manually to load or unload the parts into or out of the blasting cabinet. Such machines are suitable for small-scale production. Customers often choose these machines because they are cost-effective. Despite being budget-friendly, these machines require a lot of time and labor to move and reload parts.
Automated roller barrel shot blasting machines
As the name suggests, automated roller barrel machines have an automatic control system. It could be either fully or partially automated. In fully automated machines, operators do not have to be involved in the blasting process. The machine will smoothly and effortlessly complete the task on its own. On the other hand, partially automated machines still require operator intervention to some extent.
Continuous flow barrel blast machines
In continuous flow machines, several parts can be blasted simultaneously. Once the parts enter the machine, blasting and cleaning processes will smoothly take place without any interruption. Roller barrel shot blast machines with a continuous flow feature eliminate the need for reloading and reduce overall production time.
Capacity:
Roller conveyor blast machines' shot-blasting capacity can vary according to the machine size. They can usually handle workpieces weighing up to 100 kilograms. The belt speed normally varies from 1 meter per minute to 10 meters per minute.
Power:
Power is another important parameter of a roller barrel blasting machine. The power rating is typically between 1 and 10 kilowatts. Larger machines may have even higher power ratings. These generally have multi-blast turbine motors.
Abrasive:
Common types of abrasives used in machine roller conveyor shot blast include steel shot, steel grit, and chilled iron grit. The size of the abrasive also impacts the efficiency of the machine's operation.
Cleanliness:
The machine's ability to remove surface impurities like rust, scale, and oxidation is a key specification. Up to 98% of such impurities can be removed by these machines, depending on the kind of abrasive.
The efficient operation of roller barrel blasting machines depends on regular maintenance. Adopting a preventive maintenance program ensures the long life of critical parts and harmonizes the entire machine's functioning.
This kind of machine requires weekly checks. The focus should be on blast wheels, liners, filters, and belts. During inspections, concentrate on areas where abrasive particles accumulate. Cleaning these areas helps keep the machine in good condition.
A blast machine functions smoothly when lubricant is applied at frequent intervals to moving parts such as bearings and belts. Lubricate these components at least once a month.
Schedule a detailed inspection of critical components every three months. Examine spare parts like belts, bearings, seals, and blocks. Replace any damaged or worn-out components to prevent issues that could hamper the machine's functioning.
A blast machine's efficiency could be lower if power consumption increases. Measure the machine's power consumption every six months and compare it with records. If there is any increase, check for reasons like worn-out components or increased resistance in the turbine. Address the issue immediately to maintain optimal power use.
Due to its efficient surface preparation and cleaning capabilities, the roller barrel shot blasting machine has a wide range of applications in various industries.
Before choosing a roller barrel shot blasting machine, several factors, such as surface treatment requirements, production capacity, space constraints, maintenance and service, budget and cost-effectiveness, safety features, and technological advancements, must be considered.
Q: What kind of parts can a roller barrel shot blasting machine clean?
A: Roller barrel shot blasting machines are capable of cleaning various types of parts. They can be used to clean bulk parts, such as small castings, forgings, and electrical energizers. They can also be used to clean shaped parts, such as architectural shapes, tubing, and variety of other configurations. Finally, they can also be used to clean flat parts, such as plates and strips.
Q: What is the difference between shot peening and shot blasting?
A: Shot peening and shot blasting are two techniques that are used to improve the surface and remove any impurities. Shot peening is primarily concerned with improving the mechanical properties of a part by inducing residual stresses and increasing the fatigue life. On the other hand, shot blasting focuses on debris removal and surface cleaning for better adhesion and future treatments.
Q: Are all blast medias the same?
A: No, all blast medias are not the same. Depending on the task that needs to be carried out, different media can be used. Among the most common media are steel grit, steel shot, and aluminum oxide, which are used for general-purpose blasting. However, there are several other media types used for specialized blasting applications, such as dry ice, walnuts, glass beads, and sodium bicarbonate.
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