What is the surface quality of professional injection mold processing

The appearance quality of plastic bottle cap mold refers to several characteristics of the machined surface and the change of physical and mechanical properties in a certain depth (that is, the outer surface) after cutting. 

(1) what are the characteristics of the machined appearance? 

As shown in the following figure, the characteristics of the machining appearance of the plastic bottle cap mold are mainly composed of the following parts:

Plastic bottle cap mould. 

1) appearance roughness. 

It refers to the microscopic shape errors of the appearance, that is, the microscopic shape characteristics of the professional injection mold, which are composed of small spacing and peaks and valleys. 

It is mainly composed of the residual area height of the cutting tool track, chip accumulation, scale and the oscillation of the process system in the cutting process. 

2) apparent waviness. 

It refers to a kind of shape error between microscopic shape errors (such as flatness, roundness, etc.) and microscopic shape errors. 

It is mainly caused by the offset of the cutting tool and the forced oscillation of the system in the machining process. 

3) appearance processing texture. 

That is, the primary direction of appearance microstructure. 

It depends on the injection mold quotation processing method chosen to make up the appearance, that is, the relationship between the main movement and the feed movement.

4) scars. 

Scars refer to the defects in some individual positions randomly scattered on the machining appearance, such as cracks, scratches and so on. 

(2) the change of physical and mechanical properties of the outer surface. 

The changes of the physical and mechanical properties of the outer surface mainly include the following three aspects: the degree and depth of the cold work hardening of the outer surface; the nature, magnitude and dispersion of the residual stress of the outer surface; and the change of the metallographic structure of the outer surface.