Lianxin casting sand group successfully developed "special sand coating recycling process" instead of water glass casting process, for casting enterprises to reduce cost efficiency, solve environmental problems!-LIANXIN SAND GROUP

Lianxin casting sand group successfully developed "special sand coating recycling process" instead of water glass casting process, for casting enterprises to reduce cost efficiency, solve environmental problems!

Release time:

2022-05-31

China's casting has taken the first step of "from big to strong", and must solve the problem of environmental protection and cost reduction and efficiency increase. Especially in the foundry industry chain of relatively weak competitiveness of small and medium-sized foundry enterprises, the future, the fundamental survival and development of these enterprises, one is whether the environmental protection problem is solved; the second is to reduce costs and increase efficiency is better.

　　丨All casting enterprises using the water glass casting process face the same problem, either to find a better process to replace the water glass casting process, or to fundamentally solve the environmental protection problem of the water glass casting process, or it is only a matter of time before production is limited by the national environmental protection requirements.

　　丨Lianxin casting sand group enterprise research and development center joint industry experts, after more than 5 years of research and development and testing. Successfully developed a "special sand coating recycling process" instead of water glass casting process, the real fundamental realization of the foundry enterprises to reduce costs and efficiency, to solve environmental problems!

The advantages of the "special sand coating recycling process" developed by Lianxin Casting Sand Group are as follows:

　　丨1、Selection of high-end green environmental protection bone material; its refractoriness, roundness, permeability, crushing rate, expansion and other properties are recognized by the industry;

　　丨2、The application of high-end bone materials can obtain higher surface accuracy, strength requirements, fire resistance requirements and expansion requirements;

　　丨3、The process selects refractory aggregates to produce high-quality shells and obtain high-precision castings;

　　丨4、Cost savings: the cost of making mold shells for a single ton of castings can be reduced by about 1000 yuan. Need to cooperate with better site management to ensure the recovery rate of casting waste sand;

　　丨5、Efficiency improvement: the production rhythm is reduced from the shell-making cycle of 3-5 days to the same day that the production sand shell can be poured, and the subsequent cleaning process does not need to shake the shell;

　　丨6、Product quality: the production of small steel castings, special sand coating regeneration process can completely replace the water glass casting process, and the product process yield and casting rate of no difference;

　　丨7、Environmental issues: the use of special sand film regeneration process to produce no casting waste, to achieve a closed cycle of production, completely solve the problem of solid waste and waste water in the water glass casting process;

　　丨8、The implementation of recycling cycle can greatly reduce the overall cost of casting core materials, and at the same time realize the recycling of casting old sand in foundry enterprises;

　　丨9、Can achieve "no brush paint" can achieve water glass precision casting surface quality. The special sand coating recycling process of Lianxin Company uses refractory aggregate, selects high temperature resistant and high strength resin, and cooperates with the high temperature oxidation resistance additive developed by Lianxin Casting Sand Group, which ensures that the high surface quality of the shell material is basically the same as that of the sodium silicate precision casting shell surface, and can reach the high temperature resistance under the high temperature condition of 1600 ℃. Especially for small castings with simple structure produced by special sand coating regeneration process, the surface quality of water glass precision casting can be achieved without painting.

Application direction realized by Lianxin Group:

　　丨1、"Special sand coating process cycle regeneration" instead of "water glass casting process";

　　丨2、High-end core use, the same surface quality, can achieve no coating process instead of coated sand coating process;

　　丨Relying on the perfect industrial chain structure of Lianxin Casting Sand Group, it integrates its own resources in artificial sand production, coated sand production, waste sand recycling treatment and casting process design to create a new casting ecology with improved quality and cost reduction and green environmental protection, and provides one-stop service for casting sand for casting enterprises.