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Precision casting manufacturers introduce the cleaning and methods of precision castings
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Precision casting manufacturers introduce the cleaning and methods of precision castings

  • 分类:NEWS CENTER
  • 作者:Kelly Lee
  • 来源:
  • 发布时间:2021-01-07
  • 访问量:0

【概要描述】

Precision casting manufacturers introduce the cleaning and methods of precision castings

【概要描述】

  • 分类:NEWS CENTER
  • 作者:Kelly Lee
  • 来源:
  • 发布时间:2021-01-07
  • 访问量:0
详情

Precision casting manufacturers introduce the cleaning and methods of precision castings

Precision casting is also called lost wax casting. Its products are complex and close to the shape of parts. They can be used directly without processing or with little processing. However, any parts and instruments need to be maintained after long-term use, and dirt is cleaned to ensure their It can have a longer service life, and this product is no exception. The following precision casting manufacturers will introduce you to the cleaning and methods of this type of casting.
  The core removal and surface cleaning of precision castings are divided into dry and wet methods. Dry cleaning is the use of mechanical equipment to clean the castings. The equipment used has the advantages of simplicity, high production efficiency, greater adaptability to different types of castings, and can remove the core and effectively clean the surface. The disadvantage is that the equipment is often dusty, noisy, and pollute the environment during operation.
   Wet cleaning has no dust, but because water is used as a medium, the surface of the casting is easy to rust. During the operation, a large amount of sewage and sand with cement are produced, which brings about the problems of sand and water regeneration and sludge treatment. Commonly used dry and wet cleaning are as follows:
Precision casting manufacturers introduce the cleaning and methods of precision castings


   One, the water exploded to clear the sand.
   After the casting mold is poured, the casting is boxed when it cools to the specified temperature, and it is immediately immersed in the pool. The water penetrates into the mold through all the gaps and contacts the high-temperature metal rapidly and vaporizes and explodes. The shock wave can basically remove the sand attached inside and outside the casting. The water explosion sand cleaning method has the advantages of short working time and high efficiency, and is widely used in steel casting workshops. Generally used to process steel castings with a carbon content of less than 0.35% and simpler shapes.
   2. Roller cleaning.
Put precision castings and star iron into a round drum together. When the drum rotates, the impact and friction between the casting, star iron, and waste sand are used to remove the sand inside and outside the casting, polish the surface of the casting, and also partially remove the fly Edge burr. This type of equipment is suitable for cleaning small and medium-sized castings with simple shapes and thick walls.
   Three, shot blasting.
  Using the impact force of high-speed moving steel shot, iron shot, and abrasive flow to remove the core, sticky sand, and polish the surface of the casting. In addition, the commonly used shot blasting equipment includes shot blasting table and shot blasting room. The shot blasting machine used for continuous production includes chain plate shot blasting drum, continuous shot blasting table, suspended continuous production shot blasting cleaning room, etc. Operation and maintenance costs for this type of equipment are relatively high.
   Fourth, water power to clean sand.
   Shoot high-pressure water through the pipeline from the nozzle of the spray gun to the processed castings, relying on the kinetic energy and scouring of the water flow to remove the core and casting sand. Hydraulic sand cleaning is usually equipped with an open cleaning chamber composed of section steel and steel plate. The bottom is equipped with a rotary worktable. The spray gun is installed on the side wall and can move up and down and rotate so that high-pressure water can be sprayed to any part except the bottom surface of the casting. Sometimes in order to improve the efficiency of removing the sticky sand on the surface of precision castings, abrasives such as quartz sand are introduced into the appropriate position of the spray gun to obtain high-speed water sand flow. This method is generally called water sand cleaning.
   The above is the whole content of the precision casting manufacturer to introduce you to the cleaning and methods of precision castings. I hope it can be helpful for your future operations. If you have product requirements, please contact us.

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