Structure and Working Principle of Bolts:
Bolts, also known as "bu-loong," "bù-loong," or "bù lon," are mechanical fasteners used to assemble and connect components into a single unit. They are typically cylindrical in shape, with a hexagonal or countersunk head on one end and threads on the other end for mating with a nut.
Structure of Bolts:
-
Head:
- Bolt Head: Comes in various shapes like hexagonal, cylindrical, square, or umbrella-shaped.
- Bolt head size is usually larger than the bolt shank diameter.
- Bolt heads have grooves for using wrenches to tighten them.
- Nut: Hexagonal in shape, used with bolts to create a secure joint.
- Nut size must match the thread size of the bolt.
- Nuts may have washers to increase the joint's tightness.
- Shank:
- Bolt Shank: The longest part of the bolt, cylindrical in shape.
- The bolt shank's surface has external helical threads.
- Thread pitch (distance between thread peaks) determines the joint's tightness.
- Bolt shank length depends on the thickness of the material being joined.
Additional Bolt Components:
- Washer: Increases joint tightness and reduces friction between the bolt and material.
- Cotter pin: Prevents the bolt and nut from loosening during use.
Applications of Bolts:
- Construction: Connecting steel beams, house frames, roofs, etc.
- Machinery Manufacturing: Assembling machine parts, engines, etc.
- Transportation: Connecting vehicle components like wheels, frames, etc.
- Furniture: Assembling furniture like beds, cabinets, chairs, etc.
Choosing Bolts:
Consider these factors when selecting bolts:
- Size: Bolt size must match the hole size and thickness of the material being joined.
- Material: Bolt material must suit the usage environment.
- Thread Type: Bolts have various thread types like coarse, fine, left-hand, etc. Choose the appropriate type for your application.
- Plating: Bolts can be galvanized, nickel-plated, chrome-plated, etc., for enhanced durability and corrosion resistance.
Working Principle:
The bolt's primary function relies on the friction between the threads and the nut's mating surface, firmly securing the components together.
During use, the bolt often acts as a fixed pillar. The nut, with the same diameter and thread pitch, rotates around the bolt shank under torque to achieve the desired clamping force.
The position of both the bolt and nut depends on the frictional force of the threads when connected. This includes the compressive force and elastic deformation of the connected parts, acting upon each other.
However, when facing strong and repeated vibrations, the bolt-nut connection can loosen. In such cases, retightening the connections or using flat/wavy washers is necessary to enhance the binding ability.
Overall, the working principle of bolts primarily depends on their surface structure and thread characteristics.
Lidovit Industrial and Trading Joint Stock Company Ensures Bolt Quality:
For secure and durable component connections, the most crucial factor is the structure and quality of the bolts and nuts. Cuong Thinh prides itself on manufacturing under strict procedures and using modern technology, ensuring quality at reasonable prices.
Product Range:
- Connecting bolts, Anchor bolts, EN, S10T, F10T, A325M, etc. (strength grades from 3.6 to 12.9)
- Materials: Steel
- Surface treatment: Black, Chrome plating, Hot-dip galvanizing, Electrostatic powder coating, Dacromet/Geomet zinc flake plating
- Manufacturing standards: JIS B1 186, EN, DIN 931/933, ISO 4014/4017/7412, ATSM F3125/307, GB/T 1228/3632, A325M/A490M, JIS-II-09, KS B2819
- Diverse sizes and models
- Compatible with corresponding nut sizes
- Ensures no thread stripping, thread burning, etc.
Lidovit also specializes in manufacturing, supplying, and processing other structural fastening materials like tie rods/struts/rods, screws, cable clamps, etc.
Contact Information:
ADDRESS: Lot D5, Street No. 3, Binh Chieu Industrial Park, Binh Chieu Ward, Thu Duc City, Ho Chi Minh City
EMAIL: info@lidovit.com.vn
PHONE: +84-28.3729 418
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