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The edge damage of aerated concrete equipment blanks will greatly reduce product quality

November 20, 2021
  The edge damage of the aerated concrete equipment blanks will greatly reduce the product qualification rate and increase waste, summarize the reasons and pay attention to the production process according to the local situation to take appropriate measures.
  1. Uneven hardness of aerated concrete blanks will cause the rupture of aerated concrete blanks when cutting. When the strand is cut to the end of the blank in the longitudinal or horizontal direction, the end of the blank breaks because there is no support or no support; when the cutting line extends from the bottom to the top, the corner of the upper surface of the blank breaks.
  2. When the spreader turns the blank or moves up and down, the blank is knocked or squeezed and damaged. The die can also leak and the spent slurry can be used to plug the corners of the base plate or sprinkle some dry aerated crushed powder that adheres to the blank. However, these materials cannot be integrated with the raw stock. When cutting, they usually stick to the bed plate or are pushed away by the wire, thus damaging the edges and corners of the blank. Due to slurry leakage problems, some molds were clogged with waste slurry at the bottom corners or sprinkled with some dry aerated chips, which adhered to the raw stock. However, these materials cannot be integrated with the raw stock. When cutting, they usually adhere to the bed plate or are pushed away by the wire, thus damaging the edges and corners of the raw stock.
  3. During the demolding process, if the degree of mold opening is insufficient, it is likely to cause scratches on the sides and edges of the blank; if the crown is used for demolding, once the operation is unstable, the mold frame will shake and inevitably cause the scratching phenomenon of the raw blank; if the whole fixed mold frame is used, the raw blank may be damaged during demolding; in addition, if the humidity of the raw blank is too high, it is easy for the raw blank to stick to the mold frame, i.e., during the touch The upper corners of the billet will be damaged.
Aerated concrete equipment
  Aerated concrete equipment needs to be fully inspected before pouring the mixer to the residue and water in the whole cylinder, and to check if each drive component or travel mechanism is flexible, and should check the timer and each valve during the inspection. Check the flexibility of the components to meet the standards. Next, it is necessary to check the condition of the mold and mold carriage rollers to ensure that the entire equipment is in good sealing condition and travels properly during operation. Throughout the process it is necessary to check that the initial equipment meets the technical requirements; it is also necessary to further understand the preparation of the primary pouring operation and the classification of raw material requirements and batches, and to implement the requirements and contingency measures implementation plans and techniques throughout the operation.
  Once again, this is the order of feeding and operational requirements for aerated concrete equipment: the feeding sequence usually follows the slurry material and water first, followed by the powdered material, i.e. the auxiliary material and the gas producing material. During the operation, the slurry material and water are put into the mixer. When it is about to be filled with all the material, it needs to be replenished with steam and then heated. Open the steam valve throughout the equipment to start the gas replenishment. Make sure to control the temperature of the equipment. And remove any condensate present in the steam line before steam needs to be introduced.
Aerated concrete equipment
  Next, during the input of powdered material, the total amount of input should be controlled at 50% and the entire mixing time should be recorded. The time required for all inputs should be controlled and sampled. Consistency, proofreading the specific gravity of the water material to meet the standard requirements for correctness so that adjustments can be made. The mixing time should meet the requirements once the mold stand of the equipment is in place. Quickly add auxiliary materials and gas generators for reasonable mixing. The mixing time should be limited to 30s. Immediately after the operation is completed, the discharge valve is opened to the mold frame. Perform pouring and measure the pouring height immediately. After the whole set of equipment is poured, the relevant parameters should be filled in the process control card in time and the raw data should be recorded. Thereafter, it is necessary to regularly observe and record the gas escape. This is the main operating process mechanism outlined for the entire equipment.
Zhengzhou Bona Enterprise Co., Ltd.