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What are the common types of threaded holes
What are the common types of threaded holes? How to process threaded holes with CNC machining? Posted on : June 18 , 2022 By GREFEE Threaded holes fabrication: cutting and forming There are many types of screw thread in processing the threaded holes. The internal thread can be processed with the cutting tools (cutting tap or single lip cutting tool) or with a forming tap. Even though two methods bring the same effect. However, the following factors should be taken into…
Advantages of MUD mold in injection molding industry
Advantages of MUD mold in injection molding industry Posted on : June 23 , 2022 By GREFEE Mud mold introduction MUD, full name is master unit die, it is a quick change mold base system developed by the Unit Die Plastics Jnc. Master unit die products suit situations with a small batch of plastic parts and numerous varieties, which is a solution for reducing cost. With many years of experience, it has been widely acknowledged by many master unit die companies….
How to manage die casting dies
How to Manage Die Casting Dies Posted on : June 21, 2022 By GREFEE Die casting mold is one of the three indispensable factors in aluminum alloy die casting mold production. Its use of it determines the service life of die casting mold directly. The production rate and the quality of aluminum alloy castings determine the cost, especially the custom die casting molds. So, die casting mold manufacturers have come to realize that only by putting more effort into the management, the molds…
Difference between shot blasting and sand blasting
Difference between shot blasting and sand blasting, which one? Posted on : June 9, 2022 By GREFEE Shot blasting uses the high-speed rotating impeller to throw the small steel shot or small iron shot to knock the part surface quickly to remove the oxide layer of the parts. Meanwhile, the lattice of the surface will distort when the steel shot or iron shot, which increases the stiffness. Shot blasting is often used for casting surface cleaning and part surface strengthening. Generally,…
How to select tools for CNC threads
How to select tools for CNC threads Posted on : June 14, 2022 By GREFEE Threads are the most common methods to connect the mechanical parts, whereas the threads holes processing is machining often at the end of the whole production. Once the processing is unqualified, the part might be scrapped or re-processed. Thus, it has a high requirement for the safety of processing. Processing thread holes requires various tools. Commonly used tools include the thread turning tool, tap, extrusion tap,…
Common welding methods of stainless steel round pipe
Common welding methods of stainless steel round pipe Posted on : June 22, 2022 By GREFEE With the automotive industry being more sophisticated, welding has been an indispensable technique for processing many key parts and accessories. Round types account for a large number of them. As the material improves, the application of the stainless steel pipes expands. Suppliers need parts to produce this type of parts are required to meet the needs of lighter weight, corrosion resistance, and high strength. Besides,…
Details that You Should Know in Controlling the CNC Part Tolerance
Details that You Should Know in Controlling the CNC Part Tolerance Posted on : June 13, 2022 By GREFEE Tolerance refers to the difference between the actual geometric parameter (geometric dimension, geometry, and mutual position)after the processing and the ideal geometric parameters, also called the processing accuracy. The lower the error, the higher the degree of fit, and the higher the processing accuracy. The processing accuracy and the processing errors are two versions of one question. Thus, processing errors reflect the degree…
EDM process
Electrical discharge machining is an important method Posted on : June 17, 2022 By GREFEE Electrical discharge machining is an important method, especially in plastic mold manufacturing. The cavity, slide, insert, pin, and other groove corners in the plastic molds will also need EDM. Since EDM is also a slow processing method, thus it takes a long time to process EDM in mold manufacturing. How to ensure the quality of EDM？ Increasing the processing speed, shortening the mold manufacturing cycle, and…
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…