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    [Common knowledge and knowledge of pulse hot press! 】

    Views: 169 Release date: 2018-2-3 16:37:03

    First, the common sense of pulse hot press
    The heating method of the pulse hot press is mainly related to temperature selection, technical control and quality of processed products. Traditional heating methods usually use steam heating and electric heating. The former simply presents problems such as uneven surface temperature, while the latter has high power consumption and high operating costs. Later, there were other methods of heating oil. This heating method has high heat capacity, uniform temperature, and small heat loss, so it can reduce production costs and achieve a satisfactory hot-pressing effect.
    The hot press plate in the pulse hot press is also an important part. For its function, we can evaluate it from several aspects, including the use of the press plate data, the processing accuracy, and the placement of the medium channels in the hot press plate.
    热压机的衔接和密封,应选用适宜的。 The connection and sealing of the pulse hot press should be suitable. In the meantime, the gasket materials are traditionally using asbestos rubber sheets, and there are also some new materials, such as polytetrafluoroethylene and surrounding graphite, because their sealing effect is relatively good.
    热压机的操控体系,主要是操控加热体系和液压体系,因而关系到灵敏性和准确性。 The control system of the pulse hot press mainly controls the heating system and the hydraulic system, so it is related to sensitivity and accuracy. However, the structure of the control part is relatively complicated, so the problem is also presented briefly. If the function of the hot press is complicated, then the use of control elements should be reduced as much as possible, such as solenoid valves.
    Analysis of the reasons for the deformation of the hot press plate
    In the production process, when the hot press is pressurized, it is subjected to the two-layer effect of temperature and pressure. The hot press plate often shows pits, cracks, deformation, etc., and also produces temperature unevenness, which restricts the hair output. After the sanding of the board, there are white spots on the board surface, some are soft, tabby wrinkles, and uneven thickness of the hard layer, which greatly affects the quality of the product. In particular, after the deformation of the hot-pressed plate, the thickness of each layer of the blank has a large error, and some are too thick. The hard layer of the board surface is sanded during sanding, and the board surface cannot be sanded during sanding. In order to reduce the quality problems such as sanding on the board surface, rough and soft board surface, it is usually necessary to add the thickness of the rough board and the hard layer thickness of the board surface to ensure the minimum sanding margin. This not only adds to the production cost of the product, but also This leads to quality defects such as uneven density of the wool board and warpage and deformation of the food company standards, which together bring difficulties to the adjustment of the sander. Undoubtedly, the main reason for the large error in the thickness of the wool board produced by the multilayer hot press production line is due to the deformation of the hot press board. Most of the deformation of the hot-pressed plate is regular horizontal and vertical deformation. The main reasons are as follows:
    1. The heating is uneven, and the temperature rises too fast during preheating, especially when it is preheated in cold state.
    2. Heating with steam, sometimes the steam pipe in the hot platen is not smooth or the scale is blocked, and the conduction is uneven during heating, which makes the temperature rise of each part of the hot platen vary, which has caused the deformation of the hot press; sometimes the condensed water is not discharged. It is not easy to control the temperature, and it is more likely to cause deformation of the hot platen.
    3. In the production process, the density of missing slabs, short slabs, or individual slabs is too low, causing pressure to be concentrated on the thickness gauge and causing deformation of the hot-pressed plate.
    4. If the hot press fails to publish a book or unload the board, the slab at the rear will collide with the front board, which will cause the fibers at the front of the slab to pile up. If the operator can't find it in time, the pressurization of the hot press will easily cause the zigzag deformation of the hot press plate.
        Dongguan Hangchen Automation Equipment Technology Co., Ltd. specializes in production; sales: pulse heat press, FPC pulse heat press, pulse pressure welder, FPC heat pressure welding, heat pressure welding machine, Hotbar welding machine, etc. Sales Hotline: 13580899052
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    Address: 99 Changhuang Road, Changping Town, Dongguan City
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