Sintered NdFeB is hard, brittle, fragile and corrosion-prone. Please note:

① It is strictly forbidden to hit the magnet with external force or damage the anti-corrosion coating on the magnet surface.

② During assembly, the magnet surface is slightly lower than the iron strip plane, which can effectively avoid impact.

③ Stainless steel protective ring process can be adopted to provide physical protection for magnets against collision and corrosion.

1. Do not confuse rated value with effective value: The nominal value of a shuttering magnet is vertical suction force. To resist horizontal formwork expansion force, it must be multiplied by a reduction coefficient of 0.5. It is forbidden to directly use the rated suction as the horizontal resistance design value.

2. Must be installed tightly: The shuttering magnet must be tightly fitted against the side formwork back plate. The suction surface and mold table surface must be cleaned; iron filings and concrete residues will directly cause resistance failure.

3. Bottom is the main resistance area: The resultant point of lateral pressure is close to the bottom surface, so shuttering magnets must be arranged at the rigid back edge at the bottom of the formwork. The upper tie rod only controls opening deformation and cannot replace shuttering magnets to bear horizontal thrust.

We provide comprehensive after-sales service: we assist in on-site investigation of the causes of suction drop, and restore the magnetism of shuttering magnets through professional cleaning, structural repair, component replacement, etc. We also provide maintenance equipment solutions such as shuttering magnet cleaning machines to help customers establish a daily maintenance system.

Displacement or insufficient magnetism caused by uncleaned slurry, excessive pouring lateral pressure, improper operation and maintenance, or failure to carry out regular maintenance as required does not belong to equipment manufacturing quality problems. For non-artificial magnet performance attenuation under normal use conditions, please contact after-sales for inspection and treatment.

Arrange them at equal intervals along the length according to the calculated quantity. For on-site construction, it is recommended to take a clear spacing of 1000mm, with the allowance at both ends evenly distributed. All shuttering magnets shall be uniformly arranged at the rigid back edge at the bottom of the formwork to prioritize the lateral pressure resistance of the lower part.

The nominal value of a shuttering magnet is vertical suction force. When used to resist horizontal formwork expansion force, it shall be converted according to the 0.5 horizontal resistance reduction coefficient commonly used in the prefabrication industry. Example: For a shuttering magnet with a rated vertical suction of 24kN per unit, effective horizontal resistance = 24kN × 0.5 = 12kN per unit.

The shuttering magnet cleaning machine can efficiently remove stubborn attachments such as concrete residues and iron filings on the suction surface, eliminate suction loss caused by gaps, help restore the effective suction of shuttering magnets that "demagnetize" due to dirty contact surfaces, and extend the service life of shuttering magnets.

No, overall magnetization is not feasible. A shuttering magnet is assembled with multiple magnets of different polarities, and cannot be magnetized as a whole in a magnetizer like a single magnet. To restore suction, you must first identify the specific cause, and restore magnetism through targeted measures such as cleaning the contact surface, repairing the assembly structure, and replacing damaged magnets.

Under normal working conditions, NdFeB permanent magnets themselves will not demagnetize naturally. Most suction drops on site are not caused by natural magnetic attenuation of the magnet itself, but by reduced effective suction due to external or structural factors such as foreign matters on the contact surface, structural loosening, magnet damage, and over-temperature operation.