Die Casting
At GuanSheng Precision, our die casting services are contained all under one roof, streamlining our process and allowing for expedited delivery. We have years of experience producing high-quality die-casted metal parts and components for customers across the globe. If you require precise metal parts manufactured in low volume – contact us today. We are ready to answer any questions you may have, explain the process and benefits of die casting, and provide a free estimate for your die casting project.
WHAT IS DIE CASTING?
Die casting is a metal casting process that is characterized by forcing molten metal under high pressure into a mold cavity. The mold cavity is created using two hardened tool steel dies which have been machined into shape and work similarly to an injection mold during the process. Most die castings are made from non-ferrous metals, specifically zinc, copper, aluminium, magnesium, lead, pewter, and tin-based alloys. Depending on the type of metal being cast, a hot- or cold-chamber machine is used.
DIE CASTED PARTS HAVE MANY ADVANTAGES:
● Die casted parts are strong, made of solid metal
● Metal parts can be produced in complex dimensions
● One mould produces thousands of identical casts
● Complex mathematical accuracy
● Brilliant surface finishes available
● Heat, chemical, and pressure resistant
● Efficient and repeatable manufacturing process
● Fastest method for creating metal parts in volume
Equipment
There are two basic types of die casting machines: hot-chamber machines and cold-chamber machines.These are rated by how much clamping force they can apply. Typical ratings are between 400 and 4,000 st (2,500 and 25,400 kg).
Cold-chamber die casting
These are used when the casting alloy cannot be used in hot-chamber machines; these include aluminium, zinc alloys with a large composition of aluminium, magnesium and copper. The process for these machines start with melting the metal in a separate furnace. Then a precise amount of molten metal is transported to the cold-chamber machine where it is fed into an unheated shot chamber (or injection cylinder). This shot is then driven into the die by a hydraulic or mechanical piston. The biggest disadvantage of this system is the slower cycle time due to the need to transfer the molten metal from the furnace to the cold-chamber machine.
Hot-chamber die casting
Hot-chamber die casting, also known as gooseneck machines, rely upon a pool of molten metal to feed the die. At the beginning of the cycle the piston of the machine is retracted, which allows the molten metal to fill the "gooseneck". The pneumatic- or hydraulic-powered piston then forces this metal out of the gooseneck into the die. The advantages of this system include fast cycle times (approximately 15 cycles a minute) and the convenience of melting the metal in the casting machine. The disadvantages of this system are that it is limited to use with low-melting point metals and that aluminium cannot be used because it picks up some of the iron while in the molten pool. Therefore, hot-chamber machines are primarily used with zinc-, tin-, and lead-based alloys.
THE DIE CASTING PROCESS
Die casting is an extremely efficient and effective method for producing hundreds to thousands of metal parts quickly and accurately. Regardless of metals used or the applications for the finished piece, the process for die casting generally follows the same four steps:
1.Your design is uploaded into a 3D CAD file. If you do not have a design prepared, we have designers available happy to assist with measurements, material selection, and more.
2.The 3D CAD design is used to produce a metal mold (also called a “die”). The mold will be used to produce the metal casts. One mold can be used to produce thousands of identical units. At Guansheng Precision, we have our own advanced CNC Machine Shop, producing dies in-house saving time and money, and ensuring accurate translation of design into the completed mold.
3.The selected metal (nearly all alloys are options; aluminum is the most-popular) is heated, then injected into the mold. The metal is cooled, forming a solid metal cast.
4.The cast is removed from the mold, taken for additional finishing services, and the process is repeated.
This process occurs quickly, creating thousands of identical metal casts rapidly and with extreme precision. Parts made with non-ferrous metals such as zinc, aluminum, magnesium, copper and more are strong; they can withstand extreme conditions and environments. If you need metal parts manufactured in low-volume quantities, die casting may be your perfect solution.
CONTACT US NOW，YOU MAY HAVE A GOOD SOLUTION FOR YOUR PROJECT
Help you determine if die casting is suitable for your project
- Assist with design and material selection
- Moulds will be created in our own CNC shop
- Produce identical metal casts to your precise specifications
- Delivery a quality product with excellent accuracy and surface finish
For a free die casting estimate