Forney Abrasives - Winter 2011

The correct answer is Resin Bond & Vitrified Bond. Resin bond is a type of bonding agent commonly used in cutting and grinding wheels. It is made from a mixture of resin and fillers, and it provides excellent cutting performance and durability. Vitrified bond, on the other hand, is a type of bonding agent made from a mixture of ceramic materials. It is known for its high strength and heat resistance, making it suitable for heavy-duty applications. Both resin bond and vitrified bond are widely used in Forney cutting and grinding wheels for different purposes.

Green concrete refers to concrete that has set, meaning it has solidified and is no longer fluid, but it has not yet hardened. Setting is the initial stage in the concrete curing process, where the concrete becomes firm enough to retain its shape and support its own weight. During the setting phase, the concrete is still malleable and can be molded or finished as needed. Hardening, on the other hand, occurs after setting and involves the chemical reaction that strengthens the concrete and allows it to achieve its full strength and durability over time.

Green is the correct color label to choose if you want to cut masonry. This is because green labels typically indicate tools or equipment that are suitable for cutting or working with masonry materials. Masonry refers to materials like bricks, concrete, or stone, which require specialized tools for cutting. Therefore, choosing the green label ensures that you have the appropriate tool for the task at hand.

Forney cutting and grinding wheels use two types of abrasives: Aluminum Oxide and Silicon Carbide. Aluminum Oxide is a versatile abrasive that is commonly used for grinding, cutting, and polishing metals. It is known for its durability and ability to maintain its sharpness. Silicon Carbide is another commonly used abrasive that is known for its hardness and ability to cut through hard materials such as ceramics and glass. It is also used for grinding and polishing metals. Together, these two types of abrasives provide a wide range of applications for Forney cutting and grinding wheels.

Mounting an abrasive wheel to an Air Powered Pistol type Sander is not safe because the RPM (Rotations Per Minute) of the sander is too high for the wheel. The high speed of the sander can cause the wheel to spin at an unsafe velocity, leading to potential accidents and injuries. It is important to match the speed of the wheel with the appropriate tool to ensure safe operation.

The RPM rating for a bench grinder and wheel is 3600. This rating refers to the number of revolutions per minute that the wheel can make when the grinder is in use. A higher RPM rating indicates that the wheel can spin faster, which can be beneficial for certain grinding tasks that require more speed and efficiency.

The hardness indicated by the fourth character in the specifications refers to the bonding agent. The bonding agent is the material that holds the abrasive grains together in a grinding wheel. The hardness of the bonding agent determines the strength and durability of the wheel. A harder bonding agent will result in a more rigid wheel, while a softer bonding agent will allow for more flexibility. Therefore, the hardness indicated by the fourth character is crucial in determining the performance and suitability of the grinding wheel for different applications.

The main difference between a cutoff wheel and a grinding wheel is the thickness of the wheel. A cutoff wheel is thinner and designed for making precise cuts in materials, while a grinding wheel is thicker and used for grinding and shaping surfaces. The thickness of the wheel determines its strength and ability to withstand pressure and friction during the respective processes.

The correct answer is Steel & Stainless Steel. Ferrous metals are metals that contain iron, and both steel and stainless steel are examples of ferrous metals. Steel is an alloy of iron and carbon, while stainless steel is a type of steel that contains additional elements such as chromium, nickel, and molybdenum, which give it enhanced corrosion resistance. Therefore, both steel and stainless steel are considered ferrous metals.

The correct combination of abrasives used is Zirconium Oxide & Aluminum Oxide. Alumina Zirconia is a type of abrasive material that is made by combining Zirconium Oxide and Aluminum Oxide. These two materials together create a strong and durable abrasive that is commonly used in various applications such as grinding, polishing, and sanding.

Sandscreen is the correct answer because it is a product that has an open mesh backing and uses Silicon Carbide grain as an abrasive. This type of abrasive is commonly used for sanding and smoothing surfaces, and the open mesh backing allows for better dust collection and reduced clogging during use. Emery cloth is a type of abrasive cloth that typically uses aluminum oxide grain, while a buffing wheel is used for polishing rather than abrasive sanding.

Type 1 wheels are best used for cutting steel because they are thin and flat, making them ideal for making precise cuts. They are designed for use with angle grinders and are commonly used for cutting metal, including steel. Type 1 wheels have a straight edge and are less likely to snag or bind during the cutting process, making them a popular choice for cutting steel.

The correct answer is Backing pad, Adhesive and Abrasive Material. A flap disc consists of a backing pad, which provides support and stability, an adhesive, which holds the abrasive material in place, and the abrasive material itself, which is used for grinding, blending, and finishing tasks.

A type 27 wheel is also called a Depressed Center Wheel. This type of wheel has a depressed center, which means that the center of the wheel is lower than the outer edges. This design allows for better control and maneuverability when grinding or cutting, as it provides clearance for the tool to reach the work surface without contacting the surrounding material. Cup Wheel and Bench Wheel are not alternative names for a type 27 wheel, hence they are not the correct answer.

The responsibility to comply with ANSI B7.1 Safety Regulations lies with the users. This means that it is the duty of the individuals or organizations utilizing the equipment or machinery covered by these regulations to ensure that they are following the safety guidelines outlined by ANSI B7.1. The state, sellers, and manufacturers may also have certain responsibilities in relation to safety regulations, but the primary responsibility lies with the users.

The metal ring on 4" and larger cutoff wheels serves multiple purposes. Firstly, it helps to ensure that the arbor hole stays true, providing stability and preventing wobbling during use. Secondly, it acts as a safety measure by holding fragments of a broken wheel in place, reducing the risk of injury. Lastly, the metal ring also serves as a means for the manufacturer to identify the wheel, distinguishing it from other types or sizes. Therefore, all of the given options are valid reasons for the presence of the metal ring on larger cutoff wheels.

The correct answer is "Relationship between diamond content and Bond content". Diamond concentration refers to the amount of diamond particles present in a diamond tool or abrasive. The bond content, on the other hand, refers to the material that holds the diamond particles together. The relationship between diamond content and bond content is important because it determines the overall performance and effectiveness of the diamond tool. A higher diamond concentration means more diamond particles, which can result in a more aggressive and efficient cutting or grinding action. The bond content, on the other hand, helps to provide stability and durability to the diamond tool. Therefore, the relationship between diamond content and bond content is crucial in determining the quality and performance of a diamond tool.

A fine grain helps to create a smoother surface on the wheel, reducing friction and wear. A hard bond refers to the strength of the bonding material that holds the abrasive grains together. A harder bond will provide better support and stability for the grains, preventing them from wearing out quickly. Therefore, using a combination of fine grain and hard bond would result in a longer-lasting wheel.

Using a masonry wheel to cut steel is not recommended because masonry wheels are designed for cutting materials like brick and concrete, not steel. Steel is much harder and denser than masonry materials, so the masonry wheel will quickly wear out when used to cut steel. This is because the wheel's composition and structure are not suitable for cutting through the tough steel material, causing it to deteriorate rapidly. Therefore, it is not advisable to use a masonry wheel for cutting steel.

A type 1 grinding wheel is also known as a bench grinding wheel because it is commonly used on bench grinders. It is designed for stationary grinding applications where the workpiece is held in place and the wheel is operated by a motor. Type 1 wheels are not suitable for use with hand-held machines as they are not designed to be used in this manner.