After the pouring liquid metal, the shrinkage can be divided into three stages： liquid contraction since the pouring liquid metal into the shell to start before solidification is called liquid contraction. At this point, the metal is completely liquid metal reduced within a cavity volume shrinkage performance of the liquid surface. The higher the pouring […]

In the production of investment casting, people pay more attention to the castings with complex shapes, and take various measures in the process to obtain qualified castings, but the castings with one or more large planes are mistaken for simple, technologically It is also easy to ignore, and the general investment casting process is often […]

Introduction Shell mold casting is a casting method for producing castings with thin shell molds. Shell casting was invented by German J. Cronin in 1943. It was first applied in Germany in 1944, and other countries began to adopt it after 1947. Cover the metal template heated to 180-280°C with a heat-hardening molding sand (phenolic […]

According to the weight of the parts proposed in the design, plus the weight of the machining allowance. Weigh the weight of the investment mold, and then obtain it as follows:Casting weight = investment weight * A, A = casting material density / mold material density. List the shape and size of each part of […]

Adding C to the steel casting process is a common way we cast. When the C content is less than 2%, we call it cast steel; when it is higher than 2%, we call it C steel. However, C itself does not have strength and hardness. However, as Fe(3)C, the iron carbide in the solid […]