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Common surface treatments of magnesium alloy parts

Common Surface Treatments of Magnesium alloy parts Posted on : May20, 2022 By  GREFEE Magnesium is widely used in aerospace, automotive, and electronic product shells due to its low ratio, high specific strength, stiffness, great shock absorption, electromagnetic shielding, good recycling, etc. It has a huge development and application potential. The development of magnesium alloy is limited since it is easy to be eroded in humid and coastal areas, which results from its chemical and electrochemical activity. Therefore, some methods have…

Common clear injection material selection

Common Clear Injection Material Selection Posted on : May16, 2022 By  GREFEE The priority of clear plastic is to ensure high transparency. Its high strength, impact and wear resistance, thermal resistance, chemical resistance, and low water absorption rate make it meet the needs for transparency. For the clear material selection, PC is the ideal section but with high price and difficult injection molding technology. So, PMMA is the typical choice. however, a good mechanical performance of PPE should be obtained after…

Things you need to consider about overmolding design

Things you need to consider about overmolding design Posted on : May 13, 2022 By  GREFEE Overmolding is an injection molding process that allows the available molding parts to have an additional layer of resin to provide a property combination that can not be obtained through a single material. One of the common applications is to add a layer of soft, functional, and skin rubber-like material, TPE (thermoplastic elasticity). Another one is to alter or strengthen surface property through materials in different…

Nylon and glass fiber composites

Characteristics and Applications of the Nylon and Glass fiber Composites Posted on : May25, 2022 By  GREFEE With the increasing needs for products with the rapid development of the processing industry, single texture materials cannot meet our requirements in multifaceted performance for materials. Use base material with different properties to process compound modification, providing mutual support of relative advantages. It can increase some specific properties without harming other properties of the compound material or is given new features to enlarge its…

Basic principles of die casting

Basic Principles for the Die Casting Projects Posted on : June 6, 2022 By  GREFEE The die casting technique is widely used in each industry, such as electronic device shells, communication shells, communication cooling parts, automobile steering parts, engine shells, chassis, etc. With social development, quality requirements for the castings increases, too. How to ensure quality qualified castings? Stability is a scientific and systematic management process. Based on GREFEE’s many years of experience, practice following the below steps will ensure stable…

Material management is essential to quality control

The Quality of the Die Casting Material Determines the Quality of Die Casting Products. Posted on : June 1, 2022 By  GREFEE Material management is essential to quality control and qualified product manufacturing. Die casting materials include the main material (aluminum alloy ingot) and some auxiliary materials. The quality of the aluminum alloy die casting raw material determines the quality of aluminum alloy castings.  Management of main material 1. receipt of aluminum alloy ingot  Based on the requirements of the air content…

Sandblasting is Essential to deal with Post-Treatment

Sandblasting is Essential to Deal with Surface Treatment Posted on : May18, 2022 By  GREFEE Sandblasting is essential to deal with post-treatment, am can be used to clean the residual on parts after heat treatment, such as oxidized skin, residual salts, etc. Surface strengthening can enhance the fatigue strength of the part. Sandblasting is also helpful to correct thin and long parts plus the deformation of thin-wall parts. Definition of Sandblasting Sandblasting is driven by the squeezed air to form a…

Advantages and Disadvantages of Hot Runner Molds

Advantages and Disadvantages of hot runner in injectoin mold Posted on : May14, 2022 By  GREFEE Cold runner: refers to the area between the mold entrance and gate of the product. Plastic remains in the flow state with the injection pressure and the thermal amount inside the runner. Runners as a part of the molding material but not products’ so we need to consider the filling effect in designing molds and also seek out ways to save material by shortening and…

Find the appropriate anodic oxidation

Find the appropriate Oxidation treatment for your aluminum alloy parts. Posted on : May 9, 2022 By  GREFEE Anodic oxidation is one of the most common surface treatment methods for CNC aluminum parts, which accounts for a big share of the market. This processing suits aluminum parts manufactured by various techniques, such as CNC machining, die casting, and sheet metal forming. Introduction of anodic oxidation Anodic oxidation is processing that transfers the metal surface into the oxide film through an electrolytic…

Injection molding part tolerance is vital in assembling

Injection Molding Part Tolerance is Vital in Assembling Posted on : May 10, 2022 By  GREFEE Many plastic products are made from injection molding due to their high production efficiency and low cost. Compared to other parts, the tolerance also can be neglected during production. Unqualified tolerance leads to difficulties in assembling. This must be avoided because it is not only time loss but also money loss. Today, we will talk about controlling the tolerance in injection molding with high quality…

Considerations of the sheet metal parts design

Considerations of the Sheet Metal Parts Design Posted on : May 5, 2022 By  GREFEE Sheet metal is widely used in industries like electronic appliances, telecommunication, automotive industry, and medical devices due to its lightweight, high strength, electric conductivity (can be used for EMC), low cost, excellent properties, and mass production. Sheet metal parts are an indispensable part of many products and can be found in computer cases, mechanical connectors, etc. Since many products contain sheet metal parts, their design and…

CNC machining material selection guide

CNC Machining Material Selection Guide Select appropriate materials according to the use requirements of parts Posted on :May11, 2022 By  GREFEE CNC machining is indispensable for the machining industry due to its high machining accuracy and price advantage. While, it is not always that easy to initiate a project with everything set up, like material type. Today, we will introduce some typical CNC machining materials, metal materials, and plastic materials for various functions. For more detailed information, contact GREFEE for…

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