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The application of 3D printing in the laryngoscope mold
The application of 3D printing in the laryngoscope mold Posted on : March 31, 2022 By GREFEE Medical care used tools have rigorous requirements on accuracy. Thus, it has higher requirements for the accessories production of medical used machines. In the production of the accessories of medical devices, there is no tolerance for the surface quality, accuracy, and hygiene, from the hyperbaric oxygen chambers to hearing aids, anesthesia laryngoscopes, medically used buttons, and other injection molding products. If it is required,…
Types of Injection molding
Before you initiating your new project, you need to know the types of injection molding. Posted on : March 24, 2022 By GREFEE There are many ways to classify the injection molding, in which it is classified into few types according to the difference. (1) classified by the material, there are thermoplastic injection mold and thermosetting plastic injection mold. a. Generally, injection molding technology suits for both thermoplastic and multiple thermosetting plastic. b. In the injection molding process of thermoplastic molds,…
The Calculation Formulas for Injection Molding
The Calculation Formulas for Injection Molding Posted on: March 23, 2022, By GREFEE Part 1 Clamping tonnage F (TON) Formula: F=Am*Pv/1000 Clamping tonnage: TON Am: Mold Cavity Projected area: CM2 Filling Pressure： KG/CM2 Generally, the plastic material filling pressure range is 150-350KG/CM2) Good flowability takes bottom values, poor flowability takes top values. Injection Pressure= filling pressure/0.4-0.6 For example: Mold Cavity Projected Area 270CM2, Filling pressure 220KG/CM2 Clamping tonnage =270*220/1000=59.4TON 2. Injection Pressure Pi（KG/CM2）Formula： Pi=P*A/Ao that is: Injection…
Mold design Tips – Two-Stage Ejecting Structure
Mold design Tips – Two-Stage Ejecting Structure Posted on : March 24, 2022 By GREFEE Generally, when taking the product out from the mold, no matter it applies a single or multi-parts ejecting structure, the ejection should be finished once. However, due to the specific shaped products or requirements of volume production, a two-stage ejecting structure makes it possible to carry out ejection two times, which is very continent in cases in which the molded item can not be taken out old…
Shrinkage depression of die casting products
Causes analysis and improvement methods of shrinkage depression of die casting products Posted on : March 24, 2022 By GREFEE To learn more problems and preventions of die casting, click to check it out. Undercasting Cold Shut Mold Sticking Cracking Flow Marks Deformation Strain Ejector pin Marks Dented Lamination Burrs Shrinkage depression Bulges Deformation Fissure Discolored Mottles Bubbles Washout What is shrinkage depression in die casting? When die casting products contract when they are cooled, during which the outer layer adheres to…
Lamination in die casting products.
Causes analysis and improvement methods of lamination in die casting products. Posted on : March 23, 2022 By GREFEE To learn more problems and preventions of die casting, click to check it out. Undercasting Cold Shut Mold Sticking Cracking Flow Marks Deformation Strain Ejector pin Marks Dented Lamination Burrs Shrinkage depression Bulges Deformation Fissure Discolored Mottles Bubbles Washout What is die casting products lamination? The casting has local evident metal layers or a gap with different depth and lengths. Causes: 1. Mold…
Burrs in die casting products
Causes analysis and improvement methods of burrs in die casting products Posted on : March 23, 2022 By GREFEE To learn more problems and preventions of die casting, click to check it out. Undercasting Cold Shut Mold Sticking Cracking Flow Marks Deformation Strain Ejector pin Marks Dented Lamination Burrs Shrinkage depression Bulges Deformation Fissure Discolored Mottles Bubbles Washout What is burrs of die casting parts? Thin metal layers appeared above the casting edge or PL surface, thickness < 0.2MM. Causes: 1. The…
Mold sticking problems in die casting products
Causes analysis and improvement methods of mold sticking problems in die casting products Posted on : March 23, 2022 By GREFEE To learn more problems and preventions of die casting, click to check it out. Undercasting Cold Shut Mold Sticking Cracking Flow Marks Deformation Strain Ejector pin Marks Dented Lamination Burrs Shrinkage depression Bulges Deformation Fissure Discolored Mottles Bubbles Washout The sticking problem in the aluminum alloy die casting process has plagued die casting operators for a long time. Sticking will generate…
Flow marks of die casting products
causes analysis and improvement methods of flow marks of die casting products Posted on : March 24, 2022 By GREFEE To learn more problems and preventions of die casting, click to check it out. Undercasting Cold Shut Mold Sticking Cracking Flow Marks Deformation Strain Ejector pin Marks Dented Lamination Burrs Shrinkage depression Bulges Deformation Fissure Discolored Mottles Bubbles Washout What is the flow mark of die casting products? First, the liquid metal flows into the cavity and forms a sheer and incomplete metal…
Discolored mottles in die casting
Causes analysis and improvement methods of discolored mottles in die casting Posted on : March 23, 2022 By GREFEE To learn more problems and preventions of die casting, click to check it out. Undercasting Cold Shut Mold Sticking Cracking Flow Marks Deformation Strain Ejector pin Marks Dented Lamination Burrs Shrinkage depression Bulges Deformation Fissure Discolored Mottles Bubbles Washout What are the discolored mottles on the die casting surface? The die casting surface presents different colors which are inconsistent with that of the…
Fissure marks in die casting
Causes analysis and improvement methods of fissure marks in die casting Posted on : March 24, 2022 By GREFEE To learn more problems and preventions of die casting, click to check it out. Undercasting Cold Shut Mold Sticking Cracking Flow Marks Deformation Strain Ejector pin Marks Dented Lamination Burrs Shrinkage depression Bulges Deformation Fissure Discolored Mottles Bubbles Washout What is fissure mark? The casting surface has protrusions or sinks which look like hairs. It enlarges and spreads as the number of die casting times…
Strain in die casting products
Causes analysis and improvement methods of strain in die casting products Posted on : March 23, 2022 By GREFEE To learn more problems and preventions of die casting, click to check it out. Undercasting Cold Shut Mold Sticking Cracking Flow Marks Deformation Strain Ejector pin Marks Dented Lamination Burrs Shrinkage depression Bulges Deformation Fissure Discolored Mottles Bubbles Washout What’s is the die casting strain? In the mold releasing, the die casing part will be ejected and will cause irregular patterns on the…