To calculate the weight, you can use the following formula: M= = *V, where M refers to the quality; P is the density, here refers to the density of pig iron, usually 7.8 * 103kg/m3; V refers to the volume is the volume of metal fence. Because the density is known, we do not need to calculate the weight of the calculation of the weight of the volume of cast iron fence, where the volume is generally a monolithic volume.
As everyone knows, of course, the metal fence shape are generally not rules, and if you tough enough in higher mathematics, calculate the volume of their nature be nothing difficult.
As there is no master of multiple points to calculate the volume, the general need to break the entire barrier into a number of modules, each module is similar to a regular shape. In China's design concept, the use of symmetrical rules is very common in the actual performance of the metal fence is particularly prominent. For some common styles, you may only need to calculate a very small part of the whole fence will be able to calculate the weight.
In the calculation of the volume of the process, many of the approximations are required by virtue of experience to carry out. In the industry, this kind of calculation is generally to specialize in the production of a mold to complete the mold of the master.
In particular, many consumers are asked to make a lot of their own design of the flower type, in fact, can not be produced. Casting need to be continuous, some users, especially the users of their own signs on the fence, marking the presence of discontinuities in the area is very common, this part of the deal, will bring additional errors.