Author - china plastic injection molding

Six Points of Preparation for Mold Assembly

Familiarity with assembly procedure

The assembly procedure of injection mold is not only the process document of the assembly process and operation method of the mold, but also the technical document guiding the assembly work of the mold. It is also the basis for the assembly production plan and technical preparation. Therefore, before assembling, workers must read the assembly process regulations carefully, understand and master the whole process of assembling the mold.

A thorough understanding of assembly drawings

Assembly drawing is the […]

Harmful Effects of Improper Heat Treatment Process of Plastic mold

In the process of plastic mold processing, cracks or deformation, easy oxidation and decarbonization of the surface are mainly due to the failure of the mold. The main reason for the failure of plastic mold is the improper heat treatment process, such as the improper selection of heat treatment process parameters such as heating temperature, holding time, cooling speed and so on.

First of all, it is about the influence of oxidation and decarbonization, mainly because die quenching is stopped […]

5 Factors Reflecting Technical Level of Mold Factory

The level of mold technology ultimately manifests itself in many aspects, such as mold manufacturing cycle, mold service life, mold accuracy and stiffness, mold manufacturing cost, mold standardization and so on. These are also the basis for evaluating the economic and technical indicators of molds.

Mold manufacturing cycle

The mold manufacturing cycle reflects the production technology level and organization management level of the mold enterprises. When making the mold, we should try to shorten the manufacturing cycle of the mold. At present, in order to shorten the […]

Common Defects in Plastic Injection Mold

As we all know, some defects often occur in injection molds after forming, which seriously affects the normal use of the workpiece, and even leads to the unusable workpiece, which will seriously affect the cost and efficiency of the manufacturing workpiece. Therefore, we must do a good job of preparation before moulding, and find out the specific causes of these defects.

Lack of glue.

(1) If one of the multi-mode cavities lacks glue, it may be due to the different size […]

How to Improve Quality of Injection Mould Effectively?

In order to produce qualified plastic injection moulds, we must provide the quality of plastic injection moulds. What measures can we take to improve the quality of plastic injection moulds?

A complete set of plastic mould production management system is established to realize the computer information management system of product data management, process data management, plan management and schedule management in the process of mould production management, including the formulation of mould production plan, mould design, process formulation, workshop task […]

Facing Insufficient and Uneven Hardness of Mould, What Should We Do?

Hardness of mould heat treatment is a very important mechanical property index, and unqualified hardness is a very serious defect. Insufficient hardness or uneven hardness after heat treatment will reduce the wear resistance and fatigue strength of the mould, lead to early failure of the mould, and seriously reduce the service life of the mould.


1) The cross-section of the mould is large and the hardenability of the steel is poor. For example, the steel with low hardenability is selected […]

Protection and Maintenanceof Mould

Protection of mould
Because of the specificity, precision and vulnerability of mould, the safety protection of mould is very important. The following aspects are summarized as a whole:
mold making
Anti-rust: Prevent rusting caused by leakage/condensation/rain/fingerprints of injection moulds.
Anti-collision: Prevent the phenomenon of the mould crash caused by the breakage of the ejector pin and the failure of the ejector pin to fall back into place.
De-burring: Prevent the burr of mould caused by cloth/material punching/hand-wiping/nozzle clamp/knife touching.
Defects: Prevent the damage caused by the lack of parts […]

Properties of mold need to be validated before manufactured

First point: wear resistance
When the billet is plastic denatured in the mold cavity, it moves and slides along the outer surface of the mold cavity, which causes severe conflict between the outer surface of the mold cavity and the blank, and then leads to the failure of the mold due to wear and tear. So the wear resistance of materials is one of the most basic and important functions of the mold.

Hardness is the primary factor affecting wear resistance. Generally speaking, the […]

Factors Influencing Polishing Effect of Moulds

There are three main factors affecting the polishing effect of moulds:

Quality of mould steel

Non-uniform surface hardness or different characteristics often lead to polishing difficulties, and all kinds of inclusions and pore in steel are not conducive to polishing.

Heat treatment process

Heat treatment affects polishing performance in many ways. The fine structure of surface hardened steel is not conducive to polishing due to the increase of carbon content on the surface. Polishing is difficult because of the increase of small oxide […]

What Industries Are Molds Widely Used In

Mold, industrial production used for injection, blow molding, extrusion, die casting or forging, forming, smelting, stamping and other methods to obtain the required products of various molds and tools. In short, the mold is a tool used to make molding objects. This tool is composed of various parts, and different molds are composed of different parts. It mainly realizes the processing of the shape of the object by changing the physical state of the molding material. It is known […]