Good news! Lianxin Casting Sand Group and Shenyang Foundry Research Institute jointly developed domestic high-end 3D printing special sand, all indicators are better than German 3D printing sand.-LIANXIN SAND GROUP

Good news! Lianxin Casting Sand Group and Shenyang Foundry Research Institute jointly developed domestic high-end 3D printing special sand, all indicators are better than German 3D printing sand.

Release time:

2021-04-11

Once upon a time, German industrial enterprises and their products have always been synonymous with high quality, especially in the foundry industry. However, with the transformation and upgrading of China's foundry industry, many national brand enterprises have emerged. They have the courage to work hard and study hard. Their purpose is to produce more and more products with technical content and comparable quality to the world. Really let made in China win the recognition of the global market with exquisite technology and high-quality products.

In recent years, with the increasing demand for high-quality casting products in the foundry industry, 3D printing technology and products have been more and more widely used in casting production. Due to the particularity of the 3D printing process, enterprises must use German 3D printing special sand to 3D print high-quality foundry sand, but the cost of German 3D printing special sand is high, which virtually increases the cost of domestic foundry enterprises.

In order to help the development of foundry enterprises and realize cost reduction and efficiency increase, Lianxin Foundry Sand Group organized a research and development team and jointly developed a localized high-end 3D printing special sand in conjunction with Shenyang Foundry Research Institute, which took more than two years to solve the problem of expensive high-end 3D printing sand.

　　Advantages of Lianxin 3D printing special sand compared to German 3D printing sand:

1, the price is low. The price of Lianxin 3D printing special sand is about 1/2 of the price of German 3D printing sand, which greatly reduces the production cost of casting sand;

2. Lianxin 3D printing special sand uses silica sand from Zhangwu, Liaoning, with moderate silicon content and round grain shape. A large number of production practices have proved that silica sand products produced in Zhangwu, Liaoning are more suitable for the production of cast iron and non-ferrous metal castings, and the quality of processed castings is higher. Compared with German 3D printing sand, the probability of expansion defects in castings produced by Lianxin 3D printing special sand is greatly reduced;

3. Lianxin Zhangwu silica sand has regular grain shape, good angular coefficient and strong regeneration reusability. The reuse rate of Lianxin 3D printing sand can reach 90-95%, while the reuse rate of German 3D printing sand is only 80%-90%;

4, the sand strength is higher. Under the premise of adding the same curing agent and the same amount of resin, the curing speed is unchanged, and the strength of Lianxin 3D printing special sand is more than 30% higher than that of German 3D printing sand.

　　Features of Lianxin 3D printing special sand:

1. Lianxin 3D printing sand has low cost compared with German sand and superior performance compared with domestic quartz sand;

2. Good high temperature and high humidity applicability, which can solve the problem of slow curing caused by acid consumption after premixing the curing agent, and has good applicability;

3, good strength and curing performance, can be appropriate to reduce the amount of binder, cost savings at the same time reduce the sand core gas;

4, good angle coefficient, can improve the accumulation of compactness, reduce the difficulty of laying sand, improve the accuracy of the sand core surface;

5, suitable silicon content, low expansion performance at high temperature, reduce casting expansion defects.

At present, there are many pressures for the survival and development of foundry enterprises. On the one hand, domestic and foreign casting market competition incentives; on the other hand, with the introduction of a series of national environmental protection access and other related policies, foundry enterprises have to choose more and more green environmental protection materials, which also caused the continuous improvement of production costs of foundry enterprises. Therefore, for foundry enterprises, such as high-end 3D printing sand, which accounts for a relatively large production process of sand mold, whether it can reduce the cost of sand raw materials has become one of the core factors for foundry enterprises to obtain the competitiveness of the casting market.

Therefore, at the beginning of the research and development of 3D printing special sand, Lianxin casting sand group carried out product research and development according to the principle of green casting, and recycled the old sand of 3D printing sand as the core of product research and development. Through continuous technical iteration, now, Lianxin 3D printing special sand has achieved the core technical advantages of 3D printing sand old sand regeneration. Comparing the "reuse rate of old sand", which is the most critical index for regeneration of 3D printing sand, we can see the specific difference: the reuse rate of Lianxin 3D printing special sand is as high as 90-95%, which is obviously better than the reuse rate of 80%-90% of German 3D printing sand, and also far exceeds the reuse rate of 75-80% of quartzite crushing sand.

　　Lianxin casting sand group 3D printing sand regeneration processing advantages:

1. Some of the special sand for Lianxin 3D printing is Zhangwu silica sand, which has the characteristics of regular grain shape, good angular coefficient and strong natural regeneration reusability;

2. Lianxin Group Casting Solid Waste Treatment Center has the qualification of casting solid waste treatment issued by the state;

3. Lianxin Group adopts the German harmless treatment concept for casting solid waste treatment. Its technology and equipment originated from Taiwan and Japan. It has grown up in Lianxin's practice for many years and has mature production, management and application experience in the field of solid waste treatment of casting waste sand;

4, Lianxin Group in Shandong Weifang, Liaoning Zhangwu, Fujian Nanan has a number of solid waste treatment capacity of the branch, the business radius can cover 500KM.

To sum up, according to the data of reclaimed sand production practice for many years, northern sand as the raw sand of reclaimed sand can increase the recovery rate of reclaimed sand to more than 90%, which is obviously better than other sand products.

The special sand for 3D printing of Lianxin is precisely the production of northern sand as the original sand, with more prominent advantages. 3D printing is equipped with regeneration process production, which can achieve higher regeneration recovery rate and make enterprises more profitable.

　　Relevant data and experimental results

1. product interface effect

After more than two years of research and development tests, the research and development center of lianxin casting sand group has broken through innovation and solved the problems in the industry. it has created a special high-performance 3D printing sand with excellent performance, stable curing and excellent strength with northern sand as the base material!

　　2. test effect analysis

1. Performance comparison of Lianxin 3D sand, German sand and domestic quartz sand

Test results: Lianxin 3D sand has high strength and fast hardening speed, which meets the requirements of use.

2. Shenyang Foundry Research Institute: VX2000, Germany, dry printing process; The premixed curing agent is placed in a 100% humidity environment for 72 hours and dried in the air for 24 hours.

Test results: Lianxin 3D sand has high strength and fast hardening speed, which meets the requirements of use; the test effect is good.

3. Shenyang Foundry Research Institute: VX2000, Germany, dry printing process; Premixed curing agent is placed for 7 days.

Test results: Lianxin 3D sand has high strength, fast hardening speed, and good test results, which meets the requirements of use.

Practice is the only criterion for testing the merits of a product. Lianxin Casting Sand Group's 3D printing special sand is committed to the localization of high-end 3D printing sand, reducing the cost of casting sand molds for casting enterprises, truly reducing costs and increasing efficiency for each casting enterprise, and making due contributions to a national enterprise. Welcome new and old friends to understand the consultation.