Sand mold microwave drying method
A technology of microwave drying and sand molding, which is applied in the directions of casting molds, cores, and casting mold components, can solve the problems of poor microwave drying efficiency and untimely moisture discharge, and achieves the guarantee of drying effect and continuous operation. Effect
Active Publication Date: 2018-08-10
NINGXIA KOCEL MOLD
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Problems solved by technology
[0005] The invention overcomes the disadvantages of poor microwave drying efficiency and untimely moisture discharge in the prior art, and provides a microwave drying method for sand molds, which controls the air in the microwave cavity by opening and closing the magnetron and adjusting the air volume of the fan. Temperature and humidity, and has multiple modes such as local operation and remote operation, to achieve rapid drying of sand molds and ensure the drying effect of sand molds
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Embodiment 1
[0033] The method of the present invention does not limit the size of the microwave drying cavity. Taking the cavity whose size is 2800mm×1200mm×1850mm as an example, microwave drying is performed on a sand mold with a height of 1200mm. The cavity of the microwave drying equipment is equipped with a blower and an induced draft fan. Two axial blowers are installed at the bottom of the microwave drying equipment; one axial flow induced draft fan is installed at the top of the microwave drying equipment to form a closed wind circulatory system.
[0034] The magnetrons on the top of the cavity are not limited in the installation position and arrangement, and can be arranged in a centralized or dispersed or uniform manner. This embodiment is a uniform and dispersed arrangement. As for the side design of the entire microwave system, since the height of the sand mold is only 1200mm, it is only two-thirds of the height of the microwave drying cavity, so if figure 1 As shown, the magn...
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The invention relates to microwave drying technologies, in particular to sand mold microwave drying equipment. The method includes the steps of: firstly, conducting analogue simulation on the magnetron installation number and arrangement mode, specifically, putting a sand mold in the cavity of microwave drying equipment simulatively, according to the placement position of the sand mold, installingand arranging a plurality of magnetrons on two sides far from the ingress and egress of the sand mold and on the sand mold top surface respectively, then using electromagnetic simulation software foranalogue simulation, according to the simulation result, adjusting the magnetron installation number and arrangement mode till reaching a shortest drying time of the sand mold; then according to thesimulation result, installing and arranging magnetrons in the cavity, placing a solid sand mold, and starting the magnetrons; and finally adjusting the humidity value in the cavity unit the sand moldreaches a dried state. The method provided by the invention overcomes the shortcomings of the existing sand mold microwave drying technology, and can achieve a best sand mold drying effect and a shortest drying time.
Description
technical field [0001] The invention relates to the field of microwave drying equipment, in particular to a microwave drying technology for sand molds. Background technique [0002] Sand mold microwave drying heating is an industrial-grade high-efficiency heating technology. During the casting process, after the sand mold is flow-coated, it must be surface-dried by using fast and efficient heating equipment. The traditional method is to use an electric meter to dry the kiln. This method consumes a lot of energy, and it is difficult to achieve uniform drying of the sand mold surface. After the furnace is released, the local temperature of the sand mold surface may be too high, which will cause the sand mold to break, and may even cause personal injury to the operator. [0003] The microwave drying equipment mainly uses the magnetron attached to the high-power microwave heating cavity to heat up the temperature, and uses the high-power axial flow fan to disperse the moisture....
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IPC IPC(8): B22C9/12
CPCB22C9/12
Inventor 王永恩马龙黄部东
Owner NINGXIA KOCEL MOLD