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The Causes of Stomatism in Casting and the Solution
Release Time:2017-12-12 06:14:40
Casting pores to solve the methods and techniques:
. The abrasive cracked product is entrained in the pores of the molten metal. This stomata are large and more accompanied by carbon black.
Prevention and control measures are to improve the process so that the flow of molten metal in the pouring process is stable, no turbulence occurs, and the pouring temperature, the negative pressure and the permeability of the paint layer are also improved.
2 looks like, paint dry holes caused by poor. Poor appearance of dry, water-containing, poor coating or poor adhesion of the seam seam Seepage paint shall not be dry, pouring a large amount of gas, easily formed anti-spray, in this case the most prone to stomata.
Prevention and control measures is to look like a fully dry, dry paint after pouring in a timely manner, no sticky appearance of bonding phenomenon.
3. Looks like too much binder stomata. Binder too much, gasification slow, liquid metal will be involved in the formation of pores.
Prevention and control measures is the choice of low gas volume, gasification speed of the binder, to ensure a solid bond under the premise of using less glue as possible.
4. When pouring into the air to form pores.
Prevention and control measures are designed through a reasonable pouring system to ensure that the flow of molten metal pouring process smooth, not angry.
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