A post tension slab is a special type of building structure that is anchored with tendons. The slab is then kept open in a plastic pipe with couplers. This structure is incredibly strong, and can withstand a lot of pressure. It is usually used for a single-story building and has many benefits. post ... Read More

The chemical substance industry, for instance, faces many problems. The parts in this industry should withstand high temperatures and even pressures while undergoing continuous use. Standard products include elbows, bullhead tees, driver tubes, and ethylene coils. Other items include static throw ... Read More

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Factors affect the accuracy of the castings produced by investment casting The size accuracy of the investment has a great influence on the accuracy of the casting. The size deviation of the investment mold is mainly caused by the instability of the molding process, such as the size of the combined ... Read More

When producing steel castings, due to a number of factors that may make the surface of the steel castings less smooth, that is, the surface of the steel castings will be rough, how can this be effectively avoided? Let's give you a brief explanation. Among all kinds of castings, mechanical castings ... Read More

The solution to shrink the defect is an important factor affecting the cost of the product, which directly affects the process yield and production efficiency of the casting. The feeding effect of the casting has a direct relationship with the material and structure of the casting. Although the gray ... Read More

1. In the gray cast iron, there is graphite, and the tensile strength of graphite is almost zero, and the cast iron can be regarded as a steel full of cracks or voids. Graphite not only destroys the continuity of the matrix, but also reduces the effective cross-sectional area of ​​the metal matrix ... Read More

Gray cast iron is a cast iron in which the fracture is gray and the carbon in the structure appears in the form of a sheet. Gray cast iron is widely used in various fields due to its high mechanical properties, superior casting properties and good cutting performance. However, when using gray cast ... Read More

Gray iron Chinese and foreign brand comparison No. Country Cast Iron Grade 1 China — HT350 HT300 HT250 HT200 HT150 HT100 2 Japan — FC350 FC300 FC250 FC200 FC150 FC100 3 United States NO.60 NO.50 NO.45 NO.35 NO.30 NO.20 — 4 Former Soviet Union CЧ40 CЧ35 CЧ30 CЧ25 CЧ20 CЧ15 CЧ10 5 Germany GG40 GG35 ... Read More

Stomata (bubble, pupil, air pocket) Feature Pores are holes that are present on the surface or inside of a casting. They are round, elliptical or irregular. Sometimes a plurality of pores form an air mass, and the skin is generally pear-shaped. The shape of the pupil is irregular and the surface is ... Read More