concrete embedded magnets

 

Precast concrete magnets (also known as embedded magnets or concrete embedded magnets) are widely used in construction, industrial equipment, exhibitions and other fields to fix, hang or dock metal parts. Choosing the right precast concrete magnet requires comprehensive consideration of multiple technical indicators to ensure its performance, durability and safety. The following are some important influencing factors:

 

1. Magnet pulling force (adsorption force) The pulling force of the magnet is the core indicator, which directly determines its load-bearing capacity.

Things to note when purchasing:

Clear requirements: Determine the required pulling force according to the actual application scenario (such as hanging tools, fixed steel structures, exhibition props, etc.). Common specifications range from tens of kilograms to hundreds of kilograms.

Test standard: Magnet pulling force is usually marked as "vertical pulling force" or "shear force", and the test conditions (such as how thick the steel plate is in contact with) need to be confirmed.

Safety margin: It is recommended to choose a model with a pulling force 20%-30% higher than the actual demand to cope with dynamic loads or magnetic attenuation after long-term use.

 

2. Shell material

The magnet shell needs to have the dual functions of protecting the magnet and facilitating installation. Common materials include:

Stainless steel (such as 304/316): Strong corrosion resistance, suitable for humid or outdoor environments (such as swimming pools, coastal buildings).

Galvanized steel: High cost performance, but not as rust-proof as stainless steel, suitable for dry indoor environments.

Engineering plastics: Lightweight and insulating, but with low load-bearing capacity, mostly used for electronic equipment or temporary fixation.

Recommendation: Stainless steel shells are preferred, especially in humid, acidic and alkaline environments.

 

3. Rust prevention and sealing treatment

Prefabricated magnets are embedded in concrete for a long time, so rust prevention is crucial:

Surface treatment: Check whether it has been nickel-plated, epoxy-coated or passivated to resist alkaline corrosion of concrete.

Sealing design: High-quality magnets will use rubber rings or glue-filling technology to prevent moisture from penetrating into the magnet.

Weather resistance: For outdoor use, products with IP65 or above protection level must be selected.

 

4. Ease of installation and removal

Prefabricated magnets need to be embedded before concrete pouring, and the installation method affects the ease of construction:

Threaded hole design: allows the position to be adjusted with bolts later, suitable for scenarios that require flexibility.

Welded brackets or anchors: suitable for heavy-duty fixation to ensure that the magnets do not shift in the concrete.

Embedded vs. surface installation:

Embedded: The magnets are completely embedded in the concrete, with a flat surface, suitable for floor or wall applications.

Surface installation: The magnets are exposed, which is easy to replace, but may affect the appearance and safety.

Purchase advice: Confirm the thickness of the concrete pouring and ensure that the magnets are embedded deep enough (usually ≥50mm).

If later adjustment is required, choose models with threaded or removable designs.

 

5. Temperature and environmental adaptability

Different magnet materials have different temperature sensitivities:

NdFeB: The strongest magnetic force, but high temperature (>80°C) may cause demagnetization.

Ferrite: High temperature resistant (up to 250°C), but weak magnetic force.

AlNiCo: Good high temperature stability, but high cost.

Purchase suggestions:

Avoid using NdFeB in high temperature environments (such as workshops and boiler rooms), and use ferrite or AlNiCo magnets instead.

 

Other key considerations

Anti-vibration design: If used in vibrating equipment, the magnets need to have cushioning rubber or a locking mechanism.

Certifications and standards: Check for compliance with industry standards such as ISO 9001, CE or ASTM.

Supplier reputation: Choose a professional manufacturer like LSC to ensure material authenticity and after-sales service.

In the field of modern construction, precast concrete is gradually becoming a revolutionary building material. It not only improves construction efficiency, but also significantly improves building quality. With the continuous advancement of process technology and the application of high-tech equipment such as Precast Concrete Magnet, the future development prospects of precast concrete will be even broader. Whether it is residential buildings, public buildings or infrastructure, precast concrete will play an important role and promote the construction industry to a higher level.

precast concrete

What is precast concrete?

Precast concrete is a type of concrete component that is prefabricated in a factory and then transported to the construction site for assembly. Compared with traditional on-site cast concrete, precast concrete has higher quality control, faster construction speed and better environmental performance. This material is widely used in residential construction, public buildings, infrastructure and industrial construction.

 

The main ingredients of precast concrete are similar to those of conventional concrete, but the proportions and additives may differ.

1. Cement: acts as a binder to hold other materials together.

2. Aggregates: include sand and gravel, providing strength and volume to concrete.

3. Water: reacts chemically with cement to form a hardened body.

4. Additives: such as water reducers, retarders, etc., used to improve the working properties and durability of concrete.

 

Precast Concrete MagnetPrecast Concrete Magnet

 

The manufacturing process of precast concrete is a complex and sophisticated system engineering, involving multiple steps such as design, mold preparation, concrete mixing, pouring, maintenance, demoulding, quality inspection, transportation and installation. Each step requires strict control and management to ensure the quality and performance of the final product. With the continuous advancement of technology, the manufacturing process of precast concrete will be more efficient and environmentally friendly, bringing more innovation and development to the modern construction industry.

1. Design and planning, this step includes:

- Architectural design: Design the shape, size and structure of the component according to the needs of the construction project.

- Mold design: Make high-precision molds according to the design drawings of the component to ensure the accuracy and consistency of the component.

- Material ratio: Determine the ratio of concrete, including the ratio of cement, aggregate, water and additives to meet the requirements of strength, durability and working performance.

 

2. Mold preparation is a vital tool in the manufacturing process of precast concrete.

- Mold making: Make molds using steel, wood or other materials according to the design drawings. The mold must have high precision and good sealing to ensure the accuracy of the size and shape of the component.

- Mould treatment: Before pouring concrete, the mould needs to be cleaned and coated with a release agent to facilitate the subsequent demoulding process.

 

3. Concrete mixing is a key step to ensure uniform mixing of materials.

- Material weighing: Accurately weigh cement, aggregate, water and additives according to the predetermined ratio.

- Mixing: Put the weighed materials into the mixer and mix them thoroughly to ensure the uniformity and working performance of the concrete. The mixing time, speed and sequence need to be strictly controlled.

 

4. Concrete pouring, pour the mixed concrete into the mould, this step needs to pay attention to the following points:

- Layered pouring: For larger components, layered pouring may be required to ensure the density and uniformity of the concrete.

- Vibration: Use a vibrator to vibrate the poured concrete to remove bubbles and improve the density and strength of the concrete.

- Surface treatment: After pouring, the concrete surface is smoothed and treated to ensure its flatness and aesthetics.

 

5. Curing. After the concrete is poured, it needs to be cured to ensure its hardening and strength development.

- Natural curing: curing in the natural environment, suitable for conditions with suitable temperature and humidity.

- Steam curing: accelerating the hardening process of concrete through steam, suitable for conditions that require rapid demoulding and production. Steam curing can significantly shorten the curing time and improve production efficiency.

- Wet curing: keep the surface of the concrete moist by spraying water or covering it with a wet cloth to prevent cracking.

 

6. After the concrete reaches sufficient strength, demoulding is carried out.

- Mold removal: carefully remove the mold to avoid damaging the components.

- Surface treatment: perform necessary surface treatment on the components after demoulding, such as repairing defects, polishing, etc.

 

7. Quality inspection. The components after demoulding need to undergo strict quality inspection to ensure that they meet the design requirements and standards. :

- Dimension inspection: measure the dimensions of the components to ensure that they meet the design drawings.

- Strength test: test the compressive strength of the components through pressure tests and other methods.

- Appearance inspection: Check whether there are cracks, bubbles and other defects on the surface of the components.

 

8. Transportation and installation. Components that pass the quality inspection will be transported to the construction site for installation.

- Transportation: Use special transportation vehicles to ensure that the components are not damaged during transportation.

- Installation: According to the construction drawings, use lifting equipment to install the components to the designated location, and fix and connect them.

 

The process technology of precast concrete is the key to its success.

1. Mould technology: Use high-precision moulds to ensure that the size and shape of the components are accurate.

2. Automated production: Mix, pour and maintain concrete through automated equipment to improve production efficiency and consistency.

3. Steam curing: Use steam to accelerate the hardening process of concrete and shorten the production cycle.

4. Quality control: Perform strict quality inspections in a factory environment to ensure that each component meets the standards.

 

precast concreteprecast concrete

 

The application of Precast Concrete Magnet in precast concrete significantly improves the strength, durability, working performance and construction efficiency of concrete through the action of magnetic field. This technology not only improves the quality and performance of precast concrete, but also brings environmental protection and energy-saving benefits, and is widely used in various construction and infrastructure projects. With the continuous advancement of technology, Precast Concrete Magnet will play a more important role in the field of precast concrete and promote the construction industry to a higher level. It has a wide range of applications Application performance:

Residential buildings: used for walls, floor slabs and other components to improve building quality and durability.

Public buildings: such as schools, hospitals, etc., to ensure structural safety and long-term use.

Infrastructure: bridges, tunnels, etc., to enhance the compressive and tensile properties of the structure.

Industrial buildings: factories, warehouses, etc., to improve the stability and service life of the building.

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