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What Is the Processing Flow of Sintered Mesh?

Mar. 26, 2020

When it comes to sintered nets, many people have seen them, and the types of sintered nets are different in various industries of society. Moreover, in the sintered mesh, its processing quality will directly determine its own service life. At the same time, it is necessary to extend the service life of the sintered wire mesh, and daily maintenance and maintenance are also essential.

In the processing of sintered mesh, when the filtration accuracy meets the requirements, the processing of a good sintered mesh should have a high passability, and the oil permeability of the sintered mesh can be maintained to keep the system's circulation stable. Stress will also be lower and more affordable. If the pressure difference is too large, it will not only damage the sintered mesh structure but also affect the pumping efficiency of the pump.

At the same time, the strength of the sintered mesh should also meet the standards. The strength is related to the pressure capacity of the sintered mesh. The pressure in the hydraulic system is not constant. According to the working intensity and time, the switching power supply is switched, the pressure is changed, and the sintering is good. The sintered mesh must not only bear large pressure but also have fatigue resistance so that its structural strength will not wear under constant pressure.

Sintered Mesh Cone Filter

 Sintered Mesh Cone Filter

In addition, the selection of the sintered mesh filter element is also very important, and it must have sufficient corrosion performance when using the filter material of the sintered mesh cone filter. Meanwhile, if the sintered mesh element is made of a metal material, it is liable to rust, and thus an additive is required. Custom screen mesh manufacturer introduces the processing process of sintered mesh:

In the first step, the multi-layer meshes to be sintered are stacked neatly in the order required by the process, and the four corner spot welding is fixed together to make a sintered network;

In the second step, the grids are stacked one by one on the material support plate, with an isolation layer between each sintering network, a material pressing plate is placed on the upper end of the sintering network, and the stacked material support Plate, sintering network and material pressing plate are loaded into the sintering furnace;

The third step is to evacuate the sintering furnace so that the pressure in the sintering furnace is less than or equal to 1.3 × 10? 3Pa;

In the fourth step, the heating temperature is raised by a heating device. When the temperature in the sintering cavity rises to 295-305 ° C, hydrogen is introduced into the sintering cavity to make the pressure in the sintering cavity be 39-41Pa. Continue to heat the sintering cavity. The temperature rose to 1200 ℃ —1300 ℃;

The fifth step is to turn on the hydraulic mechanism to inject circulating cooling liquid into the cooling channel of the metal support rod. At the same time, the hydraulic mechanism is started so that the lower end of the heat-resistant jack is pressed against the material platen, and the pressure at the sintering network is 0.5-1.5. Kg / cm2;

The sixth step is to maintain the pressure and temperature for 4-10 hours.

The seventh step is to naturally cool down and remove the pressure to turn off the heating device. At the same time, the pressure is removed, and the temperature is slowly lowered to 1080 ° C-1120 ° C. The eighth step is to keep the temperature at 1080 °-1120 ° C and continue to maintain the temperature for 1- 2 hours;

The ninth step, quickly reduce the temperature and close the hydrogen inlet valve, and pass in 1.9 to 2.1 atmospheres of cooling gas through the cooling gas inlet, and discharge it through the cooling gas outlet, so that the temperature is quickly reduced to 280 ° -310 ° C within 15 minutes;

The tenth step is to stop the cooling gas input by natural cooling, and rely on the circulating cooling water to slowly cool it down to 35 ° C-45 ° C;

In the eleventh step, the material support plate, the sintering network and the material pressing plate are removed from the sintering furnace out of the furnace. After vacuum suction, rolling, levelling, cleaning, drying, inspection and packaging, the finished sintered mesh product is produced.

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