Our Blog
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,…
Introduction of common medical plastics
Introduction of common medical plastics Posted on : Nov 4 , 2022 By GREFEE The common materials used in the medical industry include glass materials, metal materials. Compared with glass and metal materials, the main characteristics of plastics include: (1). Low cost, can be reused without disinfection, suitable for the production of disposable medical devices. (2). Simple to process, can be produced into various useful structures with its plasticity. Metal and glass are difficult to be made into products with complex structures….
Causes and Solutions of Welding Line of injection molding
Causes and Solutions of Welding Line of injection molding Posted on : Nov 2 , 2022 By GREFEE Among the defects in injection molding products, welding lines are the common ones, in addition to the injection molded parts with very simple geometry, welding lines can be found in many injection molding parts(normally is in the shape of one line or V-groove), especially for the large and complex products requiring the use of multi gate molds and inserts. Welding lines…