What are the advantages of QCM Shuttering Magnet?

Ⅰ.Magnet

Magnet is the core raw material of shuttering magnet, for precast magnet its main two properties are crucial.

1, the residual magnetism Br: the magnetization of ferromagnetic materials to remove the magnetic field, the magnetization of the magnetized ferromagnet on the remaining magnetization strength, which directly affects the shuttering magnet suction, the higher the magnet performance Br the greater.

2, endowed coercivity Hcj: endowed coercivity is characterized by permanent magnetic material resistance to external reverse magnetic field or other demagnetization effect, in order to maintain its original magnetization state ability of a major indicator, which directly affects the magnet performance by the external environment (such as reverse magnetic field, high temperature, etc.) attenuation, the greater the Hcj the greater the resistance to attenuation ability. qcm shuttering magnet magnet material performance parameters in line with GB/T 13560- 2017 “Sintered NdFeB Permanent Magnetic Materials” standard requirements. Among them: N35 performance Hcj not less than 12KOe, Br not less than 12.1KGs; N50 performance Hcj not less than 13.9KOe, Br not less than 12.1KGs.

Ⅱ.Magnetic Block

1, high-quality materials: QCM precast concrete magnet iron bar in the selection of materials under strict control, the choice of high-carbon steel material, high-carbon steel carbon content of 1.20%-1.50%, the hardness can reach HRC65-68 or so, after appropriate heat treatment, can provide good abrasion resistance and resistance to deformation, to ensure that shuttering magnet In the process of using, the iron bar will not be easily deformed or damaged, so as to ensure the overall structural stability and service life of the precast magnet; too many impurities may affect the magnetic conductivity of the iron bar, which will reduce the magnetic effect of the shuttering magnet, high purity iron bar can better conduct and concentrate the magnetic field, which can effectively enhance the overall magnetic performance of the precast magnet. magnet’s overall magnetic properties, to ensure that in the process of using precast concrete formwork and so on.

2, the production process

(1)According to the designed size of the iron bar, use sawing machine, laser cutting machine and other equipment to cut the raw material iron bar into the required length, laser cutting machine has the advantages of high cutting accuracy, smooth kerf, small heat-affected zone, etc., which can better ensure the quality of the iron bar, through the strict quality control and precision machining process, the tolerance can be controlled in a very small range: the length of 0.2 millimeters, 0.4 millimeters width, Thickness 0.2 mm, depth of hole 0.5 mm, to ensure the stability and consistency of the overall performance of the precast magnet.

(2)The processed iron bars will be assembled by 12.9 grade high strength bolts and nuts according to the design drawings, but not assembled high-performance magnets, the upper and lower magnetic surface of the assembled magnetic block is ground flat by precision grinding machine, with a flatness of 0.01mm or more, and the flat magnetic surface can be fully contacted with the adsorption surface, so that the magnetic force can be evenly distributed to provide a stronger and more stable adsorption force.

Upper and lower magnetic surfaces are double-sided polished12.9 grade high strength bolts

(3)Polished and unassembled high-performance magnets of the magnetic block to be split, and then according to the design drawings of the assembly of iron bars and high-performance magnets, in order to protect the magnet body, to each magnet set of stainless steel ring, stainless steel ring can protect the magnets from the direct impact of the external environment, for example, in some of the more adverse working environment, such as the presence of dust, moisture, corrosive gases, etc., stainless steel ring can prevent these substances from contacting and Damage to the magnet. Because stainless steel has good corrosion resistance, it can prevent moisture and oxygen in the air and other chemical reactions with the magnet, thereby extending the service life of the magnet set of stainless steel ring, select the appropriate size of the stainless steel ring, so that it is tightly set in the magnet, both to protect the magnet, and does not affect the play of the magnetic force; for shuttering magnet in the use of the physical collision, the Stainless steel ring can also play a cushioning role. When the precast concrete magnet is subjected to accidental impact or friction, the stainless steel ring can withstand part of the impact force, reduce the damage to the internal magnet, to maintain the structural integrity of the magnet.

(4)As the magnet switch drives the magnet up and down, and the magnet switch is only connected to the middle part of the magnet, after a long time of use, it will lead to the middle part of the magnet and other parts of the magnet are not flat, resulting in a substantial reduction in the suction force of the precast magnet; in the process of use, in order to prevent the magnet switch and the magnet from contacting the magnet directly, due to a small force surface, long-term use of the force, which results in the middle of the iron bar protrudes to make the force surface is not flat In order to prevent the direct contact between the magnet switch and the magnet block, due to the small force surface and long-term use of force, resulting in the protrusion of the middle iron bar, which makes the force surface uneven, and the influence of the magnetic surface and adsorption surface can not be fully contacted, the QCM shuttering magnet has increased the stainless steel cushion between the magnet switch and the magnet block’s connecting part, which is designed to be a wider contact surface, so that both of them can have more area to interact with each other in contact, thus increasing the force surface, preventing the magnet block from becoming uneven and avoiding sluttering. This increases the force surface and prevents the magnet from becoming uneven during the switching process of the precast concrete magnet, thus avoiding the reduction of the suction force of the shuttering magnet.

Ⅲ.Shell

Now on the market magnetic fixed products shell material mostly using high strength carbon steel and stainless steel, shuttering magnet plate thickness is generally 3-4mm. in terms of strength, high strength carbon steel is better than stainless steel, in terms of rust resistance, stainless steel is better than high strength carbon steel, you can combine with the actual use of the purchase to choose the right material and thickness. In addition, you also need to pay attention to the framework structure of the shell, shell front end to increase the reinforcement plate, to prevent deformation of the external forces knocking, internal reinforcement using 6mm thick steel plate, to improve the internal strength of the shell, the shell of each accessory are used between the buckle design to increase the strength of the connection between the accessories, vulnerable parts of the weld to increase the strength of the shell to improve the service life.

Ⅳ.Magnetic control switch

Thickened magnetic switch to prevent the switch from deformation after long-term use.

Details Achieve Quality! When the shuttering magnet is in working condition, the magnetic surface at the bottom of the magnetic block should be tightly fit on the steel mold table and firmly absorbed, if the magnetic surface at the bottom of the magnetic block can not be tightly fit on the steel mold table when it will lead to a significant decrease in the suction force and insufficient suction force.

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Company Name: QCM Magnet
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Country: China
Website: https://www.pcshutteringmagnet.com/