月: 2022年12月

What Is a Flaring Tool?

A flaring tool is used to flare wires by deforming their tips into a trumpet shape. This method allows for the installation of a flare joint to connect two wires. Mainly used for processing soft wiring in air conditioning systems, flaring tools are popular for their ease of use.

Uses of Flaring Tools

Flaring tools are essential for connecting various types of wiring, such as in air conditioners. Copper pipes from the indoor and outdoor units are connected using flaring tools. By flaring one end, the other can be wrapped around it for connection. The wires are then securely joined with a nut, creating a strong, seamless bond that prevents refrigerant gas leakage and maintains cooling efficiency.

Principle of Flaring Tools

Flaring tools consist of a handle and holes of various sizes to hold the wiring. The wire is clamped between these holes, and when the handle is turned, the wire’s tip expands into a trumpet shape. There are two types of flaring tools:

• Manual Type
  In this type, the user manually rotates the handle to gradually widen the wire’s tip. When the handle feels light, the flaring is complete.
• Ratchet Type
  This type includes a ratchet handle. The wire’s tip is spread by a reciprocating motion, eliminating the need for rotation. It is simpler to use than the manual type.

What Is a Tap Wrench?

A tap wrench, also known as a tap handle, is a manual tool used for cutting screw holes. It is a special tool necessary for creating screw holes. The tap wrench consists of a long, thin rod with handles on both ends. A tap, a drill-like tool, is attached and secured in the square hole at the center of the wrench.

There are various types of taps, including tapered types that narrow towards the end and dimensional types that maintain a consistent diameter throughout.

Uses of Tap Wrenches

Tap wrenches are utilized for turning taps to cut threaded holes in materials such as steel, which are not overly hard. However, cutting large screw holes manually can be challenging.

These wrenches are often used with taps for tasks like repairing ill-fitting screws in original holes or connecting metal parts with screws.

Principle of Tap Wrenches

Cutting a screw hole is a complex process requiring experience and skill in metalworking. Initially, a hole must be drilled with a drill bit that matches the desired screw size. If the hole is too small, it can be corrected, but if it’s too large, a larger screw hole may be necessary.

The first step involves cutting a tapered hole. Using a non-tapered tap for finishing will not work effectively. A guide hole at the entrance of the screw hole is crucial and challenging to make with a finishing tapered tap.

When using a tap wrench, turn it slowly. After turning halfway, return it to the starting position and continue to drill deeper. Applying lubricating oil can facilitate smoother turning of the tap and easier hole drilling.

What Is a Sealing Tape?

Sealing Tape: Made of PTFE and Highly Resistant to Various Liquids

Sealing tape, a tape used for fittings, is made from PTFE, a type of fluoropolymer. It is resistant to a wide array of liquids, including water, steam, oil, and chemicals. Additionally, sealing tape is thin, soft, and can be easily cut by hand.

Ensure Tight Adherence When Wrapping Sealing Tape

Sealing tape is utilized to fill minor gaps in the threads of joints. It is essential to wrap the tape tightly around the joint for effective sealing. Once removed, the tape cannot be reused due to decreased adhesion.

Uses of Sealing Tapes

Primarily Used to Seal Pipe Fittings

Sealing tapes are widely used for sealing fittings, favored for their chemical resistance, softness, and ease of handling.

Also Used in Research to Prevent Chemical Leakage

In research and development settings, sealing tape is sometimes used to wrap flasks and glass bottles with lids to prevent the leakage and evaporation of chemicals. Due to its excellent chemical resistance, it is suitable for storing various liquids, including organic solvents, acids, and bases.

Characteristics of Sealing Tapes

Stretchable and Adheres Tightly When Pulled

Sealing tapes, thin and soft seals made of PTFE, demonstrate high stability against most acids, bases, and organic solvents. This makes them highly chemical-resistant. When stretched during application, the tape conforms tightly to the surface it’s applied to.

Careful Wrapping Direction Is Essential When Sealing a Joint

When applying sealing tape to the threads of a fitting, it’s crucial to wrap it in the same direction as the thread (usually clockwise). If wrapped in the opposite direction, the tape may unravel when the fitting is turned. It’s advisable to wear gloves or other protective gear to prevent hand injuries from sharp screw edges during application.

Sealing Tape Is Not Reusable Once Removed

Sealing tape is versatile, usable in temperatures ranging from -100 °C to 260 °C. It possesses excellent weather resistance, allowing for long-term use. However, once removed, it cannot be reused due to the loss of stretch and adhesion.

What Is a Vacuum Tweezer?

A vacuum tweezer is a device that uses a vacuum to attract and handle objects. There are two main types of vacuum tweezer: one is a vacuum tweezer with a spatula-shaped tip used to handle silicon wafers in the form of disks used in the semiconductor industry.

The other type is a vacuum tweezer with a tapered tip and an air intake at the tip, which is used for handling small objects. A vacuum tweezer is used for handling beads and jewelry, which are hard to grip with ordinary tweezers because of their hard edges.

Uses of Vacuum Tweezers

Vacuum tweezers are used to transport semiconductor silicon wafers because we do not want to damage the surface where chips are formed. For this reason, vacuum tweezers that can adhere to the backside of the wafer and lift it are useful.

The vacuumed spatula-like tip is pressed against the backside of a flat silicon wafer for suction, but care must be taken because if the tip is damaged and leaks at this time, the suction force will be insufficient and the wafer will fall off.

Vacuum tweezers for handling small objects are used not only for making jewelry but also for repairing precision instruments such as cameras and watches, plastic models, and for handling contact lenses.

Principle of Vacuum Tweezers

Vacuum tweezers are always equipped with a vacuum pump, which is used in combination with the vacuum tweezers. The main body of the vacuum tweezers and the vacuum pump are connected by a hose. When air is sucked in by the pump, it is also sucked out of the vacuum tweezers.

The vacuum tweezer creates a vacuum between the vacuum tweezer and the object so that the vacuum force will suck the object in and keep it from leaving the vacuum tweezer.

Once a vacuum is created between the object and the vacuum tweezers, the object will not separate from the vacuum tweezers. It is necessary to stop the suction and return the vacuum to atmospheric pressure in order to pull the object away. This is done at the touch of a button.

However, in the case of small jewelry or other objects, they may stick to the tip of the vacuum tweezers and not separate from the tip of the tweezer even after the suction has stopped. In such cases, there is a type of vacuum tweezer called a release vacuum tweezer that has a blowout function to expel air from the tip, which pulls the object away from the tweezer.

What Is a Trolley?

A trolley is a fixture attached to overhead running rails. It is used to suspend chain blocks and other items, connecting them to cargo for horizontal transportation along the rails. Trolleys are ideal for transporting heavy parts and large-volume products, offering stable movement. The trolley model suitable for installation depends on the rail shape, such as I-shaped or H-shaped steel. Common trolley types include manual (plain trolleys), geared trolleys, electric trolleys, and pipe trolleys.

Uses of Trolleys

Trolleys are essential for transporting semi-finished products and materials in construction sites and factories. They are versatile and capable of being used where traveling rails or single pipes are installed. Trolleys excel in carrying large or heavy loads stably, making them particularly useful in construction sites for moving heavy loads in conjunction with cranes, chain blocks, hoists, and other equipment. They are also prevalent in automobile plants and similar facilities, often used for horizontal movement of hoisting machines.

Principle of Trolleys

There are several types of trolleys, each serving different needs:
Plain Trolleys: These are manually operated and used for lateral movement. They typically connect to chain blocks up to 2 to 3 tons for transportation.
Geared Trolleys: Equipped with gears, these trolleys move laterally by manually operating a chain wound around the gears. This design allows for easy fine-tuning of the trolley’s position.
Electric Trolleys: Ideal for fixed or frequently used locations where a power source is available. They are motorized and heavier than plain trolleys. Some models include current-collecting brushes.
Pipe Trolleys: These use a single pipe in the ceiling to transport cargo, combined with a hoist, pulley, or chain block. The main body is usually steel, with nylon or other resin wheels, often featuring hooks for easy attachment.

What Is a Pallet Jack?

A pallet jack is a manual tool designed for moving loads on pallets, often referred to as a hand lift. It features a claw similar to a forklift at its tip, which hooks into a pallet. The load is lifted using hydraulic or electric power and moved using wheels attached to the jack. This mechanism allows for easier and more efficient transportation of loads compared to manual carrying.

Uses of Pallet Jacks

Pallet jacks are extensively used in factories and distribution warehouses for moving pallets. While not as suitable for heavy loads or wooden pallets as forklifts, their ease of maneuverability, lack of requirement for a driver’s license, and suitability for use by less experienced workers make them a popular choice in warehouse settings. Electric pallet jacks are also used in workplaces with many female workers, offering easier load transportation.

Principle of Pallet Jacks

Pallet jacks operate on the principle of leverage to lift loads. The claw of the jack hooks onto the pallet, using the load’s side as a fulcrum to lift with less force. The handle’s up-and-down movement is converted into hydraulic force to lift the load. Lowering the pallet is achieved by releasing hydraulic pressure through a lever or pedal. The wheels on the pallet jack reduce friction when moving the pallet horizontally, allowing for easy movement post-lifting. The rear wheels, equipped with rudders, facilitate directional changes, and the jack can be pushed or pulled to adjust its position precisely.

What Is a Carbide Bar?

Carbide bars, or cemented carbide rotary bars, are tools used in conjunction with rotating equipment like grinders for cutting and other operations. Made of cemented carbide, these bars are extremely hard and typically employed for cutting tough materials such as carbon steel.

Each carbide bar comprises a shank (handle) and a blade (cutting edge), where the shank size must be compatible with the grinder. There are various blade shapes available, like tapered and spherical, to suit different applications.

Uses of Carbide Bars

Carbide bars are commonly used for deburring and finishing, shaping the surfaces of workpieces. They are particularly effective for hard materials like stainless steel and titanium alloys, which are challenging to process with standard rotary bars. Specialized carbide bars, like cross-cut ones designed for titanium alloys, feature grooves in a crosswise pattern for efficient cutting.

Principle of Carbide Bars

The blades of carbide bars are classified into spiral-cut, cross-cut, and aluminum-cut types. The spiral cut, also known as a single cut, has a simple spiraled blade. The cross-cut combines right-handed and left-handed spirals, crossing over each other. Aluminum cutters, similar to spirals, have deeper and broader grooves to prevent clogging from soft materials like aluminum, plastic, and rubber.

Different blade shapes, from cylindrical to bullet and conical, cater to specific tasks. For instance, cylindrical shapes are great for flat surfaces but less effective for rounded contours. Selecting the right carbide bar for each specific task is crucial for optimal results.

What Are Heavy-Duty Casters?

Heavy-duty casters are robust transportation devices engineered to support and move substantial weights, including industrial machinery and bulk materials. These casters are designed for enhanced durability, capable of bearing several hundred kilograms to several tons. They are optimally utilized on flat surfaces and, for transporting sensitive precision parts, spring-loaded variants are often preferred to mitigate vibrations.

The selection of heavy-duty casters varies with allowable load, starting performance, and tire material, providing an extensive range of options to meet diverse industrial needs.

Uses of Heavy-Duty Casters

Employed across manufacturing floors and warehouses, heavy-duty casters streamline the movement of hefty loads like machinery, processed materials, and automotive components. They play a crucial role in improving operational efficiency by facilitating easier and quicker transportation of heavy items on production lines and in storage areas.

Choosing the right heavy-duty casters involves considering the load weight, transportation conditions, and the specific work environment, which is crucial for reducing manual labor and enhancing safety and efficiency in material handling processes.

Principle of Heavy-Duty Casters

To accommodate heavy loads, these casters feature reinforced metal fittings and wider wheels compared to standard casters. Options include larger wheel sizes to maintain adequate ground clearance and low-floor designs with twin or broader wheels for stable support. For loads exceeding one ton, transportation generally requires mechanical assistance, such as a power vehicle or forklift. Certain heavy-duty casters lack brake mechanisms and need additional measures like wire ropes or anchors for stabilization post-transport.

The specified allowable load represents the maximum weight each caster can support, suggesting the importance of selecting casters with a safety margin to ensure secure and reliable handling.

Types of Heavy-Duty Casters

Diverse in design and functionality, heavy-duty casters cater to various industrial applications.

• Fixed Casters – Designed for linear movement, providing stable transport of heavy loads.
• Swivel Casters – Offer 360-degree rotation for versatile directional movement, enhancing maneuverability of heavy objects.
• Casters With Brakes – Incorporate a brake mechanism for immobilizing heavy loads securely in place.
• Spring-Loaded Casters – Feature vibration absorption, ideal for transporting precision equipment and items sensitive to shocks.
• Low Floor Casters – Support heavy loads with minimal clearance from the floor, using twin or wide wheels for stability.
• High Temperature Resistant Casters – Suitable for high-temperature environments, made with materials that resist heat damage.
• Chemical-Resistant Casters – Constructed from materials impervious to chemicals and solvents, perfect for chemical plants and labs.

What Is a Plastic Expansion Joint?

A plastic expansion joint is a component used for connecting pipes in various construction projects. Commonly used in DIY projects, these joints facilitate the connection of pipes at right angles or for extending lengths. Available in removable and fixed (adhesive-injected) types, plastic expansion joints are lightweight, waterproof, and suitable for outdoor use.

Uses of Plastic Expansion Joints

These joints are instrumental in creating furniture and other items from pipes. They are widely used in DIY projects, including constructing car and motorcycle garages, agricultural greenhouses, and home-use greenhouses. Their ease of assembly and transportability make them ideal for outdoor camping tents and table sets. Plastic expansion joints are also utilized in industrial settings for making hand carts and other factory equipment.

Principle of Plastic Expansion Joints

The pipes connected using plastic expansion joints are known as “erector pipes.” These joints allow for the versatile assembly of these pipes in various directions. Erector pipes, being steel pipes coated with plastic, offer waterproof and rust-resistant properties, making them suitable for outdoor applications. The term “erector” comes from the concept of building or assembling structures.

Erector pipes are available in diameters of 28 mm, 32 mm, and 42 mm, providing options based on the project’s requirements. Plastic expansion joints are tailored to fit these specific diameters and come in a variety of colors. When securing joints to erector pipes, special adhesives may be used. It’s important to clean the joint surface of water, oil, or dust to prevent corrosion or rust over time.

What Is a Chain Bolt?

A chain bolt is a fastening component commonly used in lifting equipment and devices that employ chains. One end of the chain bolt has a male thread, allowing it to be directly screwed into a device. The other end features a head with a hole through which a coupling link for the chain is secured. The load on the chain bolt must be applied axially to avoid damage from angular or perpendicular forces.

Uses of Chain Bolts

Chain bolts are integral in connecting chains and managing tensile strength in various settings, including construction sites and factories. They are particularly useful in situations where chains are needed to support scaffolding or other structures. Given the widespread use of chains in diverse applications ranging from bicycles to industrial machinery and car engines, chain bolts are key components for securely linking chains to equipment.

Principle of Chain Bolts

Chain bolts play a crucial role in applications where chains are used for pulling or lifting. In these contexts, turnbuckles are often employed to adjust chain tension. While turnbuckles are traditionally used for tensioning ropes and wires, they are also effective for adjusting the tensile strength of chains. Chain bolts, which are threaded on one side (single-ended), are a vital part of this setup. They allow for adjustable tensile strength based on how tightly they are fastened. Notably, chain bolts may have either right-hand or left-hand threads.

Constructed primarily from iron or stainless steel, chain bolts are designed to withstand high loads. Different types of chain bolts have varying load-bearing capacities, and those with a rust-proof finish often offer enhanced strength and durability.