A wire mesh sintering furnace and a method of using the furnace for wire mesh sintering

Abstract

The invention discloses a screen mesh sintering furnace. The screen mesh sintering furnace comprises a furnace body. The furnace body comprises an outer furnace wall and an inner furnace wall. One endof an installation rod is connected with a gray cast iron fast-melting rod. The gray cast iron fast-melting rod is made of low-melting-point gray cast iron. The low-melting-point gray cast iron comprises, by mass, 4.0% to 4.5% of carbon, 2.0% to 2.8% of silicon, 1.5% to 2.0% of manganese, 0.5% to 1.3% of sulfur, and the balance pure iron. The invention further discloses a method for using the screen mesh sintering furnace to carry out screen mesh sintering. The method comprises the following steps of first, material preparation; second, screen arrangement; third, vacuum pumping; fourth, temperature rising by heating; fifth, fusing pressurization; sixth, heat preservation sintering; seventh, quick temperature lowering; and eighth, discharging from the furnace. With the screen mesh sintering furnace, sintering of screen meshes is implemented better, a hydraulic ejector rod is omitted, and no sealing treatment is needed. With the screen mesh sintering method, the temperature of heating sintering is effectively lowered, the sintering time can be effectively shortened, and a better screen mesh sintering effect can be achieved.

Description

technical field [0001] The invention relates to the technical field of wire mesh sintering, in particular to a wire mesh sintering furnace and a method for using the furnace to carry out wire mesh sintering. Background technique [0002] The sintered mesh is made of multi-layer wire woven mesh, which is pressed by special lamination and sintered in a vacuum furnace. [0003] A new type of filter material with high strength and overall rigidity, which overcomes the shortcomings of low strength, poor rigidity, and easy deformation and instability of wire mesh. It is widely used in petroleum, chemical industry, energy, aviation, aerospace, safety, environmental protection, medicine, electric power and other fields. [0004] The main equipment used for wire mesh sintering is the wire mesh sintering furnace. The currently used wire mesh sintering furnace is first evacuated, and then sintered at high temperature. Only a small number of contact points can be sintered together, an...

AI Technical Summary

Problems solved by technology

[0005] The use of current sintering furnaces to sinter metal mesh has the following defects: one, the use of sintering, cold rolling, re-sintering or multiple cycles increases energy consumption and reduces work efficiency, thereby increasing production costs; , before sintering, an isolation layer is placed between each sintering network. After each firing, the isolation layer needs to be cleaned, and a new isolation layer is laid before the next sintering, which not only wastes the isolation layer, but also increases The cleaning process is reduced, which reduces the work efficiency; third, in the process of multiple sintering and cold rolling, it is easy to cause damage to the stainless steel material, making the filtration accuracy of the sintered mesh uneven

[0007] But, for the above-mentioned wire mesh sintering furnace and the method for carrying out wire mesh sintering with this furnace, there are still relatively obvious defects: 1, the wire mesh sintering furnace adopts the hydraulic ejector rod extending inward from the outside to move the material The pressure plate and the sintering network are used for pressurization, but the hydraulic ejector pin that is set through it needs to be sealed, which is very troublesome, and it is easy to leak after a long time, and it needs to be checked frequently in the later stage, which is very troublesome and time-consuming; 2 1. In the method of wire mesh sintering, the requirements for sintering temperature are too high, energy consumption is high, and the value of pressure per centimeter is small, which leads to too long heating and heat preservation sintering time, resulting in unnecessary waste of working hours, which greatly reduces efficiency

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