Academy
-
Knowledge piece – heat treatment of ductile iron, castings must understand it!
There are several commonly used heat treatment methods for ductile iron. In the structure of ductile iron, the graphite is spherical, and its weakening and damaging effect on the matrix is weaker than that of flake graphite. The performance of ductile iron mainly depends on the matrix structure, ...Read more -
Calculation of cast iron gating system – calculation of blocking section
Generally speaking, the design of gating systems follows three principles: 1. Rapid pouring: to reduce temperature drop, recession and oxidation; 2. Clean pouring: avoid the generation of slag and impurities, and shield the slag in the molten iron from the cavity; 3. Economic pouring: maximize th...Read more -
What is the difference of Ceramic sand, cerabeads, chromite sand and silica sand for sand foundry
In sand casting, more than 95% use silica sand. The biggest advantage of silica sand is that it is cheap and easy to get. However, the disadvantages of silica sand are also obvious, such as poor thermal stability, the first phase transition occurs at about 570°C, high th...Read more -
The role of ceramic beads in furan resin sand
If the foundry sand is replaced by ceramic sand in the production of castings, many problems encountered in the production of furan resin self-setting sand process can be well solved. Ceramic sand is artificial spherical sand with high refractoriness based on Al2O3. Generally, the alumina content...Read more -
What are the main processes of sand casting
Sand casting is the most traditional casting method, which is a casting method in which sand is used as the main molding material to prepare molds. Steel, iron and most non-ferrous alloy castings can be obtained by sand casting. Because the molding materials used in sand casting are cheap and eas...Read more -
What are the consequences of excessive inoculation of iron castings
1. The consequences of excessive inoculation of iron castings 1.1 If the inoculation is excessive, the silicon content will be high, and if it exceeds a certain value, silicon brittleness will appear. If the final silicon content exceeds the standard, it will also lead to thickening of A-type gra...Read more -
Ceramic sand coated sand in shell mold casting process develops rapidly
The application of ceramic sand shell precision casting process has developed rapidly in recent years, from the initial bucket teeth of construction machinery to the current general parts such as valves and plumbing, auto parts to tool hardware parts, from cast iron, cas...Read more -
Who We Are
SND is a specialized company that has been in the sand foundry business for many years. Over the years, we have been supplying a wide range of products and services to our customers. We pride ourselves on our expertise in ceramic sand and metal casting. In this article, we will look at who we are...Read more -
What is Ceramic Sand for Foundry
Introducing Ceramic Sand, also known as cerabeads or ceramic foundry sand. Ceramic sand is an artificial spherical grain shape which is made from calcined bauxite, with its main content being aluminum oxide and silicon oxide. The uniform composition of ceramic sand ensures stability in grain size...Read more -
FAQs About Ceramic Sand Application
1. What is ceramic sand? ceramic sand is mainly made of minerals containing Al2O3 and SiO2 and added with other mineral materials. A spherical foundry sand made by powder, pelletizing, sintering and grading processes. Its main crystal structure is Mullite and Corundum, with rounded grain shape, h...Read more -
Discussion on Grain Size Grading of Ceramic Sand
The size distribution of raw sand particles significantly affects the quality of castings. When using coarser grit, molten metal tends to seep into the core grit, resulting in a poor casting surface. The use of finer sand can produce a better and smoother casting surface...Read more -
Applications of Ceramic Sand in Engine Castings Part
The chemical composition of ceramic sand is mainly Al2O3 and SiO2, and the mineral phase of ceramic sand is mainly corundum phase and mullite phase, as well as a small amount of amorphous phase. The refractoriness of ceramic sand is generally greater than 1800°C, and it ...Read more
-
Jinan steel group industry park, Wuan, Handan, China