月: 2023年3月

What Is Cloth Tape?

Cloth tape, constructed from durable materials such as polyethylene and polyester woven into a robust fabric, offers exceptional strength and minimal lint production during cutting. Its hand-tearable nature and ease of use make it an efficient choice for various applications, including packaging and protective covering for exterior walls and concrete surfaces.

Available in a range of base materials, from standard polyethylene cloth to specialized laminated and glass cloths, cloth tape comes in various adhesive strengths and colors. Selection should be based on the specific requirements of the intended use.

Uses of Cloth Tape

Cloth tape serves a broad spectrum of applications, from packaging to repair and reinforcement, thanks to their reinforced structure provided by the interwoven fibers.

1. Packaging Industry

Utilized for sealing boxes and packages, cloth tape’s crosshatch pattern enhances package integrity, ensuring secure transport and storage.

2. Industrial Applications

In industrial settings, cloth tape offers a quick-fix solution for repairing machinery or equipment parts, supporting both temporary fixes and more permanent repairs.

3. Crafts and DIY Projects

For craft and DIY enthusiasts, cloth tape is ideal for binding and reinforcing a variety of materials, ensuring durability and stability in creative projects.

4. Household Use

From book repair to furniture restoration, cloth tape is a versatile tool for general home maintenance, offering strong adhesion and long-lasting results.

Features of Cloth Tapes

The crosshatch pattern on cloth tape not only enhances its tensile strength but also ensures even distribution of stress, making it highly reliable for various applications. This pattern, coupled with a durable adhesive, ensures that the tape remains securely in place.

Types of Cloth Tape

• Reinforcement Tape – Designed for heavy-duty repair and reinforcement, this tape is ideal for a wide range of applications, from paper and plastic repairs to strengthening household and industrial items.
• Packaging Tape – Its strong bond and durability make cloth tape an excellent choice for packaging, especially for heavy or irregularly shaped items.
• Waterproof Tape – Water-resistant cloth tape is perfect for outdoor use or in moist environments, providing reliable sealing and repair solutions.
• High-Temperature Tape – Suitable for applications requiring resistance to high temperatures, this tape is used in repair and sealing tasks sensitive to heat.
• Fabric Tape – Specifically designed for textiles, fabric tape is used in clothing and upholstery repairs, customization, and reinforcement.
• Double-Sided Tape – Offering adhesive on both sides, double-sided cloth tape is used for mounting, decoration, and flooring applications, ensuring stable adherence.

Material Considerations for Cloth Tapes

Typically made from strong synthetic fibers or polymers, cloth tapes are engineered for high tensile strength and versatility, capable of meeting the demands of various applications through a combination of durable materials and effective adhesives.

What Is a Welding Magnet?

A welding magnet, also known as a magnet holder or mag hold, is a jig equipped with a magnet to hold materials in the correct position during welding. It is particularly useful when handling heavy materials or performing detailed work where one-handed operation may lead to instability, burns, or pinching.

Welding magnets enable the secure positioning of two metal materials at a fixed angle, freeing both hands of the welder for safer and more efficient work.

Uses of Welding Magnets

Welding magnets are commonly used in welding and assembly work to hold multiple metal materials at specific positions and angles. They are versatile and suitable for applications where heavy materials are challenging to hold manually or precise alignment is required. Depending on the product, they can hold materials at various angles and even accommodate round pipes and rods.

Beyond welding, they are also useful for temporary holding during metal material processing and assembly, serving as simple magnet holders.

How to Select Welding Magnets

When selecting welding magnets, the range of angles they can hold is a crucial consideration. Products offering a wide range of holding angles are generally more versatile. However, for large components or multi-angled products, usability may be affected by the position of the angle.

The type of magnet is another important factor. Standard welding magnets typically feature a strong permanent magnet attached to an outer frame made of iron or aluminum. Challenges with these magnets include difficulty in positioning, removing after welding, fine-tuning alignment, and the risk of attracting magnetized debris like iron powder.

To address these issues, there are electromagnet-based welding magnets with switches to turn the magnetic force on and off as needed. Additionally, it’s important to consider the weight capacity of the magnet, as using a magnet with a lower holding weight than the material’s weight can increase the risk of accidents.

What Are Heat Nippers?

Heat nippers, equipped with built-in heaters, are specialized tools designed for precision cutting tasks, particularly when processing materials like plastics. By heating the material before cutting, these tools soften the target, allowing for cleaner, more precise cuts. This feature is particularly beneficial in industries requiring meticulous detail, such as electronics and plastic part manufacturing. Despite their utility, caution is advised during operation due to the high temperatures involved; protective measures, such as wearing heat-resistant gloves, are recommended.

Applications of Heat Nippers

Heat nippers find utility across various fields, facilitating tasks that demand high precision:

• Plastics Processing: Utilized in shaping and cutting plastic components, heat nippers are indispensable in fabricating automotive interiors and consumer goods.
• Plastic Model Assembly: Essential for the assembly and customization of model kits, where they enable the precise cutting of small, intricate parts.
• Jewelry Making: Employed in crafting and repairing fine jewelry, offering the precision needed for working with delicate gemstones and metals.
• Optical Products: Applied in the lens manufacturing process, particularly for removing excess material known as gates, thus enhancing the quality of the final product.

Principles of Heat Nippers

Heat nippers operate on a simple yet effective principle of applying heat to facilitate cutting. Comprising a heater to warm up the material, a metal blade for cutting, and a handle for operation, these tools ensure a seamless cutting experience. The heater raises the material’s temperature to optimal levels for cutting, while the blade, designed according to the specific application, ensures a neat finish. The handle enhances user control and precision during the cutting process.

Choosing Heat Nippers

Selecting the right heat nipper involves considering several factors:

• Cutting Ability: Assess the maximum material thickness the tool can handle and ensure the blade width is adequate for the intended application.
• Power Supply: Verify compatibility with the available power supply, and consider models with included transformers for output adjustment if necessary.
• Dimensions: Choose a model that fits well within the intended workspace, considering the ease of use in confined spaces and the length of the power cable.

What Is a Lifting Strap?

A lifting strap, commonly known as a round sling, is a flexible belt device used for lifting and carrying heavy loads. Made from softer materials than other types of slings, such as wire ropes, lifting straps offer ease of squeezing and handling during lifting operations.

These straps are often utilized for suspending heavy equipment, capitalizing on their flexibility for safe handling. Generally used with shackles, lifting straps can also be wrapped directly around equipment for lifting tasks.

Uses of Lifting Straps

Lifting straps are primarily employed for securely wrapping and lifting loads, especially in applications like hoists and cranes. They are adaptable for various lifting methods, including chock, basket, and straight slinging. Due to their material composition, lifting straps are less likely to cause damage to the load compared to wire ropes or chains. Their lightweight and compact nature makes them easy to transport and use for various applications, including under-floor drainage systems requiring slope adjustment.

Principle of Lifting Straps

Unlike belt slings, the maximum load capacity of a lifting strap is indicated by color coding according to industry standards, rather than by the width of the strap. When employing basket-slinging methods, it is important to note that the color coding and maximum load capacity may not correspond directly. It’s essential to verify the specific load capacity based on the sling’s length and color with the manufacturer.

Additionally, when lifting angular or sharp objects, or in situations prone to slippage, concentrated stress can weaken the lifting strap. Using protective measures such as corner pads or fabrics is recommended to maintain the strap’s integrity. Qualified personnel with the appropriate licensing should conduct lifting operations, adhering to local standards and regulations.

Lifting straps are often made from durable polyester yarn bundles covered in a nylon surface cloth, offering greater strength than standard polyester materials.

What Is a Mounted Pipe Clamp?

A mounted pipe clamp is a pipe support device used to secure and support horizontal pipes to the floor. Also known as a level band, it allows for height adjustment (leveling) of the piping to ensure proper alignment and prevent damage under load. The clamp encircles the pipe, providing support and protection from misalignment or overloading, and enables height adjustments for sloping.

Uses of Mounted Pipe Clamps

Mounted pipe clamps are primarily used for securing and supporting horizontal pipes on the floor. They are particularly useful for underfloor drainage pipes that require a slope for effective drainage. These clamps can also be used for water and gas pipes installed under the floor. While similar clamps can be used for vertical piping or ceiling-fixed horizontal piping, some products may have restrictions on wall fixing or suspended pipe support.

Features of Mounted Pipe Clamps

Mounted pipe clamps come in three main types: set floor clamps, cross-band clamps, and T-type clamps.

Set-floor clamps are the most common, featuring two upward-extending bar screws from the base and a half-circle metal fitting (band) attached to the screws. The pipe is held by the band, and the nut on the screw is tightened to secure the piping. The nut’s height can be adjusted to create a slope for proper drainage.

Cross-band clamps have a semicircular band connected at the top, splitting into right and left halves, with the lower part extending in a crossed pattern to form a mountain-shaped base. These are mainly used for horizontal gas piping.

T-type clamps have a similar top structure but extend vertically to form a single pedestal, suitable for both horizontal and vertical piping.

Some mounted pipe clamps incorporate rubber or another material inside the band for vibration isolation.

What Is a Grinding Wheel Dressing Stone?

A grinding wheel dressing stone is a tool shaped into a stick for facilitating the grinding process on various tools’ cutting edges. Made of materials like alkanthus and alumina, these oil-based, smooth stones are primarily used for deburring products where scratches would compromise quality.

They are employed for precision finishing (honing) of the inner diameters of parts in automobiles and machinery, available in different grades of roughness to suit various grinding wheel applications.

Uses of Grinding Wheel Dressing Stones

Grinding wheel dressing stones are used in various applications requiring precision and uniform finishing. These include parts like bearings and cylinders in engines of vehicles like ships, airplanes, trains, and automobiles, as well as in resistors, hydraulic cylinders, and hydraulic pumps in trains and general equipment. High-quality dressing stones are crucial as they enhance part durability and reduce wear.

They are also available in consumer-friendly forms like sticks or handhelds at 100-yen stores for DIY projects.

Principle of Grinding Wheel Dressing Stones

These stones are made from hard materials such as diamond and cubic boron nitride, suitable for polishing super ceramics, iron, steel, and glass. Available in various shapes like shell-shaped or cylindrical sticks, they are tailored to specific applications. Special-purpose grinding wheel dressing stones are used in high-precision applications, such as polishing parts for new bullet trains and special vehicles.

The effectiveness of a dressing stone is often measured by its Knoop hardness degree, indicating its suitability for polishing harder materials. The polished surfaces often have a distinctive hatch pattern, enhancing lubrication and reducing wear on parts. While some dressing stones are made from softer natural ores with oil, ultra-low abrasive stones have recently become more prevalent, offering high durability and cost efficiency.

What Is a Hydraulic Hole Puncher?

A hydraulic hole puncher is a tool designed for drilling holes, powered by a hydraulic pump. Ideal for creating larger holes, this tool is available in both manual and electric models. Due to its hydraulic operation, it requires less physical effort and is capable of drilling holes in materials such as mild steel and stainless steel. It can be used on various steel forms, including flat bars, equal-sided angles, grooved steel, ripped grooved steel, and H-shaped steel.

The manual version is suitable for steel up to 3.2 mm in thickness and offers greater portability. In contrast, the electric version provides more power for thicker steel.

Uses of Hydraulic Hole Punchers

Hydraulic hole punchers are commonly used in electrical construction for drilling holes in distribution boards, pull boxes, and piping. They offer a quicker and less strenuous drilling process compared to traditional drills, making them popular in equipment construction and increasingly in DIY projects. For larger diameter holes or applications requiring portability, the manual puncher is preferred. However, for thicker steel, the electric puncher’s additional power is advantageous.

Principle of Hydraulic Hole Punchers

Hydraulic hole punchers drill holes in mild steel or stainless steel plates using hydraulic pressure. A punch and die are positioned against the steel plate, and hydraulic force is applied to create the hole.

The steel plate is set perpendicular to the punch for an even application of force. Various punches and dies are available for different hole shapes and sizes. They should be selected based on the specific requirements of the steel’s thickness and the desired hole.

In electric models, pressing the switch advances the piston, causing the attached punch to gradually deform and shear the steel plate. In manual models, repetitive handle movements achieve this shearing. The punch creates the hole following the shape of the mounted die, with debris accumulating inside the die.

With electric models, precautions are necessary to prevent ignition, explosion, or electric shock. It’s also important to avoid entanglement with clothing and not to block the cooling vents.

What Is a Pivot?

A pivot is a rotating shaft with a conical end, commonly used in machine building and machining. Pivots are typically paired with bearings to reduce friction in rotating components of machinery, particularly at high speeds. A key feature of pivots is their interaction with multiple spherical bearings, which results in lower friction due to rolling contact.

Uses of Pivots

Pivots find application in machinery that involves high-speed rotation. For instance, turbo molecular pumps in vacuum factories or academic research facilities use pivots for creating high vacuum environments (0.1~10-5 Pa). These pumps have blades rotating near the speed of sound. In computer hard disks (HDDs), pivots play a crucial role in reducing frictional losses as disks rotate at high speeds for data reading and writing.

Principle of Pivots

Pivots are integrated with pivot bearings to form a rotating assembly. These bearings consist of an outer ring and several spheres, with the pivot’s conical tip passing through the ring’s center and making contact with the spheres. This design allows for reduced friction during rotation.

Such bearings, supported by spheres, are known as ball bearings. The pivot’s tip is typically angled at 60° and finished with a small spherical surface. When used at high speeds, lubrication may be necessary. The size and capacity of the pivot bearing should be chosen based on the weight and other characteristics of the rotating components. An alternative to pivots is cylindrical bearings, or plain bearings, which have a larger contact area and thus higher frictional losses. However, they can be more efficient in power transmission through their contact surface.

What Is a Spiral Flute Tap?

A spiral flute tap is a tool used to create threaded holes in materials. Unlike straight-groove taps, which have blades extending in all directions, spiral flute taps feature spiral-shaped blades. This design enhances chip ejection during machining, improving adherence to the hole being tapped.

They are particularly useful for stop holes, where chips might otherwise accumulate at the bottom, causing issues. Spiral flute taps vary in chip evacuation and frictional resistance depending on the manufacturer.

Uses of Spiral Flute Taps

Spiral flute taps are primarily used for machining stop holes in materials such as stainless steel, alloys, carbon steel, and plastics. A stop hole is a blind hole that does not fully penetrate the material, designed to ensure that a bolt stops at a predetermined depth. Due to their ease of use and affordability, spiral flute taps are popular for both industrial applications and DIY projects.

Principle of Spiral Flute Taps

When tapping, a pre-drilled hole is required before creating threads with the tap. The hole must be deeper than the intended depth of the threaded section. While straight groove taps can remove large chips, they often leave small chips at the bottom of the hole. Spiral flute taps address this issue with a helical cutting edge that ejects chips along its groove during rotation. This action discharges material chips outward, clearing the hole. For through-hole tapping, some spiral flute taps are designed to expel chips in the direction of tap travel, known as spiral point taps.

What Is a Long Nut?

A long nut, a variation of a hexagon nut, is distinguished by its extended length compared to a standard hexagon nut. Often referred to as spacer nuts or joint nuts, they are commonly used in construction fittings and electronic device components.

These nuts are utilized when bolt extension is needed or to elevate boards and other components. Available in various materials like steel, brass, copper, and stainless steel, they offer versatility in application.

Uses of Long Nuts

Long nuts are primarily used in construction fittings and electronic device parts. Their cylindrical shape with internal threading allows for the insertion of screws from both ends. This feature enables bolts to be connected from either side, extending their length or serving as joint connections. They can also be used as height adjusters, such as in vending machines or game center enclosures, by varying the screw tightness.

In electronic equipment, they are often employed to elevate printed circuit boards, creating a gap to prevent contact with other components or the casing.

Features of Long Nuts

Long nuts are cylindrical with internal threads throughout. Some variations have female threads on one end and male threads on the other. However, these are categorized as hexagonal posts, distinct from long nuts. Their nomenclature may vary based on application; for instance, they are often called spacer nuts when used with printed circuit boards.

Available in materials like iron, brass, copper, and stainless steel, each type has specific uses. Brass and stainless steel are preferred for electronic equipment to avoid contact between circuit boards, while iron is commonly used in construction hardware.

Steel long nuts are the least expensive but are prone to rust in salty or moist environments, making stainless steel a better choice in such conditions. Sizes range from M3 to M20, with smaller sizes like M3 to M4 frequently used in printed circuit boards.