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HUALONG CASTING MATERIAL

Alkaline phenolic resin manufacturers share the process characteristics of Alkaline phenolic resin sand

Release time:

2022-06-28 09:10

  1. Alkaline phenolic resin manufacturers Alkaline phenolic resin does not contain harmful elements such as N, P, S, etc., and will not produce defects caused by infiltration of N, P, and S. It can be used for various alloy castings, especially for alloy steel castings, Ductile iron castings.

Alkaline phenolic resin

  2. Alkaline phenolic resin no-bake sand process is developed by Bordon Company, UK, and the curing agent used is organic ester instead of organic acid. Alkaline phenolic resin no-bake sand has incomplete hardening. In the initial stage of casting, the mold and core sand first show short-term heat shrinkage, and then the secondary hardening becomes rigid until collapse. This feature can significantly reduce the tendency of hot cracking of castings, reduce the casting sand flushing defects of castings, and help improve the dimensional accuracy of castings.

  3. The Alkaline phenolic resin self-hardening sand of the Alkaline phenolic resin manufacturer emits less smoke during sand mixing, molding and pouring than the furan resin self-hardening sand with acid as the curing agent, and the resol phenolic sand with acid as the curing agent Resin no-bake sand and urethane resin no-bake sand with amine as curing agent.

  4. Alkaline phenolic resin self-hardening sand is a typical "gradually hardening" self-hardening sand. The reaction process takes tens of minutes to ten hours to complete. Usually, the 24-hour sample strength is as the final strength.

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