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Micro Foaming Injection Molding Process

Lightweight Design of Injection Parts: Micro Foaming Injection Molding Process Posted on : Oct 18 , 2022 By  GREFEE At the moment, many technologies emerge in the lightweight field of automotive nonmetallic materials, such as micro foaming weight reduction technology, thin-walled weight reduction technology, low density weight reduction material technology, carbon fiber reinforced material technology, biodegradable material technology, etc. Compared to the structure optimization or manufacturing process upgrading, the focus of automotive enterprises and parts manufacturing industries are more on…

10 major processes to achieve product color

10 major processes to achieve product color Posted on : Oct 6 , 2022 By  GREFEE 1. Bi-color and multi-color injection Bi-color injection molding is a classical forming technology, which uses two kinds of material to obtain the injection products and can achieve different appearance effect with various glossy and sensation. In addition, it is currently widely used as it improves efficiency, lowers the cost and provides higher degrees of design freedom. With the continual developement of products design and…

Surface treatment of aluminum alloy die casting parts

Surface treatment of aluminum alloy die casting parts Posted on : Sep 21 , 2022 By  GREFEE There is a series of surface treatment procedures before a aluminum alloy die casting part is considered as qualified to be used, such as de-burring, surface strengthening, etc. The following are the common surface treatment methods. Method 1: Aluminum phosphating Through a series of methods, including the SEM, XRD, potential time curve, film weight change and others to research on the influence of…

How to improve mold replacing efficiency of aluminum alloy die casting mold

How to improve mold replacing efficiency of aluminum alloy die casting mold Posted on : Sep28 , 2022 By  GREFEE Comprehensive preparation prior to the installation 1. According to the scheme of production, starting the inspection and maintenance conditions of die casing molds one or two days in advance (double check the key areas) to ensure the mold and accessories are ready. There is no aluminum chips, oil dirt and dust, etc. 2. Repairing the die casting molds after shutdown…

Introduction to reliability test

Introduction to reliability test Posted on : Dec 5 , 2022 By  GREFEE Reliability test is an activity for evaluating the the functional reliability of the product in all environments, such as expected use, transportation or storage during the specified service life. The products are exposed to the natural environment or under artificial environmental conditions to evaluate the performance of products in actual use, transportation and storage environments, and analyze the influence degrees of environmental factors, as well as the…

low-pressure injection molding and traditional injection molding?

What are the differences and applications between low-pressure injection molding and traditional injection molding? Posted on : Oct 20 , 2022 By  GREFEE Low pressure injection is a kind of method that utilizes low injection pressure (0.15-4MPa) to inject the material into the mold and quickly solidified and formed in an extremely short period of time (5-50 sec). Low pressure injection generally is not just merely refers to the injection products, but to use the other parts as inserts to…

Surface Thermal Treatment of Aluminum Alloy Die Casting Parts

Surface Thermal Treatment of Aluminum Alloy Die Casting Parts Posted on :Oct 25 , 2022 By  GREFEE Surface thermal treatment of aluminum alloy die casting parts The thermal treatment of aluminum alloy die casting parts refers to control the heating temperature, holding time and cooling rate change the microstructure of the alloy. The main purpose of it is to improve the mechanical performance, corrosion resistance, machining performance to obtain the dimensional stability. The thermal treatment of aluminum alloy die casting…

Injection mould — from mould design to batch production

Injection mould — from mould design to batch production Posted on : Sep 19, 2022 By  GREFEE Mould design is an important step of the large scale product R & D process. As the design of products and moulds are co-related, it is necessary for the product design engineers and mold design engineers to know the development process of plastic parts, mold design process and the role of mold manufacturing process. Stages of the typical R&D of products include product definition,…

Acceptance check of die casting mold

Acceptance check of die casting mold Posted on : Oct 27 , 2022 By  GREFEE The die casting mold manufacturers around the word have gradually move their business in customs aluminum die casting mold to China. Ensuring the products meet the quality requirements is the key. The following introduces the acceptance check of die casting mold. Accept and check of mold 1. Safety check of mold Safety production is the base of for an enterprise. Safety is one of the important characteristics…

Gravity Die Casting

Gravity Die Casting Posted on : Nov 7 , 2022 By  GREFEE Definition of gravity casting process The gravity die casting process refers to the process that the metal liquid is injected into the casting mold by gravity, also named as casting. Gravity casting process include sand casting, metal casting, investment casting, lost foam casting, mud film casting, etc. The metal casting is modern technique of heat resistant alloy steel manufacturing die. During the gravity die casting process, the liquid metal…

How to improve the accuracy of precision injection molding parts

How to improve the accuracy of precision injection molding parts Posted on : Sep 16 , 2022 By  GREFEE Most of the plastic electronic parts adopt injection molding because these materials have high designing accuracy and are processed with specific engineering materials. For those that cannot be processed with ordinary injection molding, but precision plastic injection molding. To ensure the properties, quality, reliability and long term stability, the material, equipment of injection molding parts, mold design, injection molding process and…

Dark spots of products

Dark spots of products Posted on :Nov 9 , 2022 By  GREFEE Surface defects of injection molding products include dark spots, gloss differences or fogging areas, and surface wrinkles or so-called orange peel. The defects are usually detected around the gate or far away from the behind of the sharp corner of gates. The cause for the defects can be found easily from two aspects, mold and molding. Dark spots of products Dark spots are usually detected around the gates,…

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