Die Casting Machine and Its Work Process Flow!

Die casting is a process of manufacturing the metal parts which are difficult to give a design following geometrical rules. The process consists of metal, die, furnace and die casting machine. A non ferrous metal like zinc or aluminum is heated to the melting point in the furnace and then melted metal injected into the die casting machine. 

There are mainly two types of die casting machine – 

Hot chamber machine for materials with low melting temperature like tin and zinc.Cold chamber machine for materials with high melting temperature such as aluminum.

Well, both the machines are capable of delivering the final product quickly as it cools down the material and solidifies it quickly, this process is called casting. A die casting machine follows a process flow that consists of five main stages which are as mentioned below.


Clamping – First, the operators clean the two halves of the die then lubricate it in order to easily eject the next producing metal part. The lubrication is essential after 2-3 cycles but not after every cycle. Now, the two die halves are closed with sufficient force to make sure it would not leak while the metal is injected.

Injection – Before injection, a major step is also taken of melting the metal. The molten metal is kept in the furnace along with maintaining at a set temperature. Injection is the process of transferring the molten metal into the chamber and then to die. It requires high pressure injecting where the typical range of pressure should be from 1000 – 20,000 psi. It takes less than a second for molten metal to fill all the cavities and channels in the dies.

Cooling – After injection process the metal which currently is in liquid form starts to get cool and solidify just as it enters into die. The halves of the dies cannot be parted until the cooling process is done. The time taken in cooling varies on thermodynamic properties of the metal.

Ejection – Now, the die halves can be opened after the set cooling time has passed. A mechanically made ejecting tool is used to pull out the casting form the die cavity. It requires a good amount of force to pull out the casted item because the item shrinks and sticks to the surface of the die during the cooling process. One the casted item is ejected, the die is ready to be clamped for next injecting process.

Comments

Post a Comment

Popular posts from this blog

An Essential Guide for Tungsten Carbide Hardfacing Products

Image
Tungsten carbide hardfacing overlays are intended to oppose extreme metal-to-earth sliding scraped area. In contrast with chromium carbide overlays the client can anticipate that a 3 will 5 time increment in service performance. To comprehend this you need to perceive that tungsten carbide particles are hard in contrast with chromium carbides, (normally having a Knoop Hardness esteem on the request of 2500 KHN), or about twofold the hardness of chromium carbide. By controlling the fragmentary work size of the tungsten carbide particles in the store, enhanced effect and also scraped area protection can be accomplished. For instance, being used the better work sizes will give higher scraped area protection at the cost of bringing down the effect quality of the weld overlay. At the point when the bigger molecule work sizes are utilized the effect quality will be more noteworthy to the forfeit of scraped area protection. Conventional Application of Tungsten Carbide     The tradit
Read more

Features and Procedures to Weld the Cast Iron

Image
Before welding the cast iron alloys, it is important to know about the cast iron. A cast iron is an alloy of iron, carbon, and silicon, in which the amount of carbon is less than 4.5 percent and more than 1.7 percent. Ductile and malleable irons have good weldability, but the overall weldability of cast iron is low. The welding factors of a cast iron fully depend on the material type, complexity, thickness, casting complexity and need for machinability. It is difficult to weld cast iron, but not impossible. Welding on cast iron involves repairs to castings, not joining casting to other members.  Do you know, what is the most common type of cast iron used worldwide? Gray iron is the most common type of cast iron which has a variety of compositions. There are alloy cast irons which contain small amounts of chromium, nickel, molybdenum, copper, or other elements. The repairs are made in the foundry where the castings are produced and it is also made to repair casting defects that are
Read more

The Characteristics of Metal Spray Powders

Image
Metal or thermal spraying is the technology that protects and extends the life of a wide variety of products in the most volatile environment. It will ensure that the coating of products lasts for a longer duration irrespective of different situations. The thermal metal spray powder is the way of depositing high-quality deposits on relatively low-cost surfaces. The medium and high hardness materials and carbide composites can be deposited on a variety of metals to achieve machine strength, wear, and corrosion resistance. There are different types of metal powders available to suit the most applications. The introduction to metal spray for corrosion protection The variety of metalized coatings can be broken down into 2 main categories that include finishing coatings, such as anti-corrosion or decorative coatings, and engineering coatings such as wear resistant and thermal barrier coatings. Metal spraying is ensured in a wide range of anti-corrosion and engineering markets, th
Read more