The processing of the counterweight iron for a forklift can be divided into three basic parts: the preparation of the metal for the counterweight iron, the preparation of the mold, and the casting process. The metal of the counterweight iron refers to the metal material used for casting the casting parts in the production of the forklift counterweight iron. It is an alloy composed mainly of metal elements and other metal or non-metal elements. It is commonly referred to as forklift counterweight iron alloy, and mainly includes cast iron, cast steel, and non-ferrous alloy counterweight iron. 

Some forklift counterweight castings must undergo post-casting treatments, such as heat treatment and rough machining. Forklift counterweight iron is a relatively economical method of blank forming, and it is particularly cost-effective for parts with complex shapes. Moreover, the dimensions and weights of forklift counterweight iron components have wide adaptability, and the type of metal is not restricted. Although these components have general mechanical properties, they also possess comprehensive properties such as corrosion resistance and shock absorption. 

The casting process has the following characteristics: 

1) Castings can be made without any restrictions on the metal material, size and weight. The casting materials can be cast iron, cast steel, aluminum alloy, copper alloy, magnesium alloy, titanium alloy, zinc alloy and other alloy materials; the castings can be as small as a few grams and as large as several hundred tons; the wall thickness of the castings can range from 0.5 millimeters to about 1 meter; the length of the castings can range from a few millimeters to several tens of meters. 

2) Casting can produce complex-shaped blanks, which are suitable for manufacturing the blanks of components with complex internal cavities, such as boxes, cylinders, blades, and impellers. 

3) The shape and size of the castings can be very close to those of the components, which not only saves metal materials but also reduces the time required for cutting and processing. 

4) The raw materials commonly used for casting have a wide range of sources and the cost of the castings is relatively low. 

5) The casting process for the counterweight of the crane is convenient and highly productive. It can be manufactured either manually or mechanically.