Our Blog

Common Methods of Deburring of Castings

Common Methods of Deburring of Castings Posted on : May30, 2022 By  GREFEE Almost every product has the die casting requirement on products, which is surface finish is clean without scratches and no burrs on the edges. What are burrs? There are irregular tiny profusion staff on surface, most of them on the end face, outer hole or inner hole. Primary cause: Die casting parting surface or core pulling position (large burrs is galling), core kiss off/ shut off, post-mechanic machining,…

Bending sheet metal processing

Indispensable Methods of the Bending Sheet Metal Processing Posted on : May 31, 2022 By  GREFEE Bending (sometimes called flanging or bending) is one of the most widely used technologies in sheet metal-making. Sheet metal bending allows the manufacturers to turn a straight sheet metal part into one with angles. This is more cost-effective than welding the two single parts together or fixing them together. Sheet metal bending works in a permanent deformation method to apply the force to the sheet metal….

Application of laser welding and cutting in sheet metal industry

Application of laser welding and cutting in sheet metal industry Posted on : June 2, 2022 By  GREFEE The laser beam is easy to transmit. Its temporal and spatial characteristics can be controlled respectively. A very small sot can be obtained after focusing. The laser beam has quite a high power density, can melt and gasify any material, and carry out precision and rapid machining in local areas. In the machining process, the input heat of the workpiece, heat-affected zone, and…

Common issues of TPU injection molding

Common issues of TPU Injection Molding Posted on : May27, 2022 By  GREFEE TPU injection molding processing includes injection molding, blow molding, compression molding, extrusion molding, etc. Among all the methods, injection molding is the most common one. Injection molding is used to make TPU into the needed parts and split the process into three stages pre-molding, injection, and extrusion. The injection machines are classified into two types, plunger type, and screw type. The screw-type injection molding machine is better because…

Summary of CNC machining experience

IMore than 10 years of Experience, Summary of CNC machining Experience. Posted on : june 11, 2022 By  GREFEE CNC machining refers to machining with CNC machining tools. Since CNC machining is operated by the computer after programming, it has stable processing quality, high machining accuracy, and high repetition accuracy. It can process complex profiles and has high processing efficiency. In the real machining process, factors like people and the working experience influence the machining quality of the end products to…

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…

keywords:5 axis cnc CNC milling 5 axis cnc machine CNC machining services CNC maching