Stainless steel casting special resin The most important feature is the high temperature resistance, even at very high temperatures, but also to maintain the stability of its structural integrity and size. Andrew summed up the following main features:
1, alkaline phenolic resin free formaldehyde content is low, only 0.2%; curing agent used does not smell, harmless, environmental pollution, good sanitary conditions.
2, good curing properties, from the molding time is adjustable, equipped with three types of curing agents based on different seasons to meet the core sand is cured.
3, resin and hardener does not contain N, S, P and other harmful elements. Eliminates the casting surface seepage caused by the elements S, permeability P, N and porosity defects caused by bleeding, and also to prevent the S, P caused by poor ductile iron ball defects.
4, good applicability of the original sand. It applies not only to the basic phenolic resin low acid consumption value of quartz sand, zircon sand, chromite sand in South Africa, but also for a variety of high acid consumption value of sea sand, chromium and magnesium olivine sand sand.
5, alkaline phenolic resin-bonded sand has a lower gas evolution and better collapsibility.
6, has a unique high temperature properties. Sand core with alkaline phenolic resin, in the pouring temperature thermoplastic and secondary hardening characteristics, thereby preventing the casting hot cracking, burrs and other defects.
Stainless steel casting special resin, environmental protection, non-toxic, odorless and easy collapsing, small gas evolution, is the ideal shape of stainless steel special resin. |
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