Views: 27 Author: Site Editor Publish Time: 2024-07-29 Origin: Site
The fixing angle, also known as a foundation bolt or anchor bolt, is an indispensable component in the installation of machinery and building structures. Its selection is not only crucial for the stability and safety of the equipment or structure but also significantly impacts its lifespan and maintenance costs. This article delves into the scientific approach to selecting the right fixing angle model, providing readers with practical insights for making informed decisions in real-world projects.
Fixing angles can be categorized into several types based on their functions and applications, including:
Fixed fixing angle: Used to permanently fix equipment or components in place on a foundation.
Adjustable fixing angle (also known as Long Foundation Bolts): Designed for removable installations in heavy-duty machinery that experiences significant vibration and shock.
Expansion Anchors: Typically used for securing lightweight, stationary equipment or auxiliary devices.
Adhesive fixing angle: A more recent addition, similar to expansion anchors but offering greater installation flexibility.
Moreover, fixing angles can be classified by their shapes, such as L-shaped, 9-shaped, U-shaped embedded bolts, as well as welded embedded bolts.
The thread diameter of a fixing angle is a crucial factor determining its load-bearing capacity. Common thread diameters range from M6, M8, M10, M12, M16, M20, M24, to M30, with larger diameters offering higher load-bearing capacities. Selection should be based on the weight, size, and stress conditions of the equipment to be fixed:
M6 and M8 are suitable for small furniture items like shelves and drawers.
M10 and M12 are appropriate for medium to heavy-duty furniture, such as tables, chairs, wardrobes, and bookcases.
For larger and heavier equipment or structures like industrial machinery and tower foundations, choose M16 or larger.
The thread length must be determined based on the thickness of the material being fixed and the required penetration depth. Ideally, the thread length should exceed the material thickness while avoiding excess length to prevent waste and unnecessary complexity. Common lengths range from 50mm to 2000mm, with specific choices depending on project requirements.
The material and surface treatment of fixing angles significantly impact their performance and lifespan. Common materials include carbon steel and stainless steel:
Carbon steel fixing angles offer high strength and hardness but limited corrosion resistance, making them suitable for dry environments.
Stainless steel fixing angles excel in corrosion resistance but have lower strength and hardness, making them ideal for wet or corrosive environments.
Surface treatments like hot-dip galvanizing provide superior rust resistance and longer service life, while untreated fixing angles are cost-effective but less resistant to corrosion.
The dimensions of the fixing angle must match the diameter of the legs of the furniture or equipment being fixed. Common fixing angle sizes include 40mm, 50mm, and 60mm. Ensuring a snug fit between the fixing angle and the leg diameter ensures stability and reliability.
Define Your Needs: Clearly identify the weight, size, stress conditions, and operating environment of the equipment or structure to be fixed.
Assess Load-Bearing Capacity: Based on the equipment's weight and stress conditions, choose the appropriate thread diameter and length.
Consider Material and Surface Treatment: Select a material with suitable corrosion resistance and strength for the operating environment, and choose a surface treatment that meets your rust-prevention needs.
Check Fixing Angle Dimensions: Ensure that the fixing angle dimensions match the diameter of the equipment legs.
Refer to Standards and Codes: Throughout the selection and installation process, refer to relevant national and industry standards to ensure the quality and performance of the fixing angles.
