(1) High machining accuracy; Injection molds are generally made by assembling multiple parts, and the assembly of mold parts requires high machining accuracy. The dimensional accuracy requirements of precision injection molds even reach μ M-level.

(2) The shape is relatively complex; Some products, such as car covers, parts, toys, and household appliances, are formed by the combination of many curved surfaces.

(3) Due to the difference in demand for plastic parts, not every mold needs to be produced in large quantities. Therefore, a small batch only requires opening a set of test molds to meet the requirements.

(4) There are many manufacturing processes for injection molds; Complex machining processes such as milling, drilling, reaming, and tapping are required in mold processing.

(5) Repetitive production; When an injection mold reaches its service life, it will be scrapped. A new mold needs to be replaced to meet production needs. Therefore, molds are often produced repeatedly.

(6) Processing according to the sample; Sometimes in the manufacturing of injection molds, there may be situations where there are no product drawings, and it is necessary to carry out contour machining based on the actual product. This requires high imitation accuracy and no deformation.

(7) The main processing material for injection molds with excellent materials and high hardness is generally high-quality alloy steel, especially for injection molds with good service life requirements, which are often made of martensitic steel such as Crl2 and CrWMn. This type of steel has strict requirements from rough forging, processing to heat treatment.