What are the characteristics of ABS precision injection molding process?
ABS is a common high -performance engineering plastic. Due to its strength, abrasion resistance and chemical stability, it is widely used in various fields. In the precision injection processing industry, ABS is also one of the common raw materials. Below we will learn more about the characteristics of the ABS precision injection molding process.
What are the characteristics of ABS precision injection molding process?
ABS is a common high -performance engineering plastic. Due to its strength, abrasion resistance and chemical stability, it is widely used in various fields. In the precision injection processing industry, ABS is also one of the common raw materials. Below we will learn more about the characteristics of the ABS precision injection molding process.
1. Pre -processing of raw materials
Before the ABS precision injection molding processing, the raw materials need to be prepared. ABS particles are usually used to use dryers or oven to remove water. Excessive water will cause air bubbles or even reduced quality on the surface of the molding part. In addition, some additives such as tough tough agents, flame retardants can be added to improve the molding performance and comprehensive performance of ABS.
2. What is the process of injection molding processing process
It mainly includes the following 5 aspects:
(1) Installation: Put the processed ABS particles in the fighting of the injection molding machine.
(2) Heating and melting: The mold locking system of the injection molding machine is closed and closed with the injection system. Then enter the heating and melting stage, you need to control the melting temperature, pressure and time parameters, so that the ABS particles are melted into liquid state in the injection molding cavity.
(3) Injection and pressure maintenance: After the melting is completed, the injection molding machine begins to inject liquid ABS into the mold. After the injection is completed, the pressure should be maintained for a certain time to ensure that the filling is fully fit the mold.
(4) Cooling and curing: After the pressure is maintained, the injection molding machine will no longer apply any pressure. ABS will quickly cool down in the mold, so as to quickly solidify.
(5) Model opening and unloading: Finally, under the control of the injection molding machine, the mold is separated and the molding components are introduced. At the same time, you need to fill the reset mold for the next charge.
3. The main points of design of injection molding parts
When performing ABS injection molding, the following 4 aspects need to be considered:
(1) Product size and shape: Large and complex shapes require large injection molding machines and molds.
(2) Product wall thickness: It is related to the melting liquidity of ABS. Excessive or too small wall thickness affects the molding.
(3) Maobian processing: Because ABS is harder, it is not easy to produce hair edges, but you still need to pay attention to handling.
(4) shrinkage rate: Because there is a certain shrinkage rate during the ABS curing process, the amount of reservation is required, and the product size meets the design requirements.
In summary, the characteristics of ABS precision injection molding process mainly include steps such as raw material pre -processing, heating melting, injection molding and pressure maintenance, cooling curing, and mold opening and unloading. In the design of the product design, factors such as wall thickness, wool edge treatment, and shrinkage rates need to be considered to ensure the quality and production efficiency of the product.