How is the Shuttering Magnet You Used Now?
Is there a large accumulation of used magnetic boxes like the picture on the left? Are there any cases in the workshop where components are reworked and cut due to expansion molding?
As an important auxiliary tool in the production of PC components, magnetic boxes have the advantages of rapid molding, no damage to the mold table, and repeated use. However, with the increasing number of magnetic box manufacturers, the quality of magnetic boxes is uneven, and there is no unified standard. As a result, many magnetic boxes have various problems during use. Not only do they fail to achieve the expected results, but they also cause high investment costs and even hidden dangers in component quality.
How to Choose a Good Quality Shuttering Magnet?
1. The suction force of the magnetic box must meet the standard
The most important and basic thing about a high-quality magnetic box is to ensure that the suction power reaches the standard.
Is the suction power of the magnetic box you bought really the same as the suction value specified in the contract?
The picture on the right is the suction testing data tested by our company using professional testing instruments.
2. Long Service Life
Suction comparison (1000KG Shuttering Magnet): High-temperature working condition of the curing kiln, the actual temperature of the curing kiln is about 62℃
| Factory | Initial Magnet Attraction | Initial Shuttering Magnetic Suction Force | 6 Months Shuttering Magnet Suction | 12 Months Shuttering Magnet Suction |
| GME | 1040KG | 1030KG | 920KG | 800KG |
| B | 990KG | 950KG | 700KG | 500KG |
| C | 1000KG | 970KG | 730KG | 550KG |
Suction comparison (1000KG Shuttering Magnet): no maintenance kiln, routine maintenance
| Factory | Initial Magnet Attraction | Initial Shuttering Magnetic Suction Force | 6 Months Shuttering Magnet Suction | 12 Months Shuttering Magnet Suction |
| GME | 1040KG | 1030KG | 1000KG | 950KG |
| B | 990KG | 950KG | 800KG | 600KG |
| C | 1000KG | 970KG | 830KG | 650KG |
3. High Cost Performance
There are many low-priced magnetic boxes on the market. If you think about it carefully, at the starting line with the same suction power and service life, are they still cost-effective?
Magnetic Steel Comparison (1000KG magnetic box)：
| Factory | Magnet model | Br (Kgs) | Hcj (KOe) | Maximum operating temperature (℃) |
| GME | N38 | 12.0 | 12.0 | 80 |
| B | N38 | 11.7 | 11.6 | 80 |
| C | N38 | 11.6 | 80 | 80 |
Note: The residual magnetism Br represents the attraction force of a magnet, while the intrinsic coercive force represents the magnet's ability to resist demagnetization in a high-temperature environment.
①Cost-effectiveness
The average life of a GME shuttering magnet is about 2 years: 170÷(365*2)=0.232/day
The average life of the shuttering magnet in Factory B is about 1 year: 140÷365=0.383/day
The average life of the shuttering magnet in Factory C is about 1 year: 150÷365=0.41/day
②GME provides Shuttering Magnet repair services to local customers. The statistical data results are as follows:
| Factory | Usage environment | Operating Temperature | Operate | Usage Time | Is it Repairable |
| GME | Vibrating mold table | ≤62℃ | Normal Operation | 2 years | Yes |
| B | Vibrating mold table | ≤62℃ | Normal Operation | 1 year | No |
| C | Vibrating mold table | ≤62℃ | Normal Operation | 1 year | No |
Usage time of the Shuttering Magnet:
After testing and customer feedback, the magnetic box is used according to the specifications. The magnetic box can still be used normally after 1800 switching times, and it can still be used normally after 300 consecutive violent tests. After follow-up visits from multiple component factories, it was found that if used under the operating specifications, the magnetic box can continue to be used after 2 years of normal use.
