Die Casting
Die casting is a manufacturing process in which molten metal is pressed into a mold under high pressure to produce metal parts, including mold making, metal melting, and the injection of molten metal into the mold. The commonly used metals for die casting are aluminum, zinc, magnesium and copper, which have different strengths and properties to meet the needs of a variety of industries. Die casting can produce precision and complex shape parts, is an efficient and precise manufacturing process, widely used in the production of various parts.
Our factory has a huge capacity, has its own mold manufacturing workshop and professional die casting mold team, can efficiently design and manufacture high-quality die casting molds, there are a large number of precision CNC machine tools for post-processing, the use of the most advanced equipment to produce your high-precision parts, with a lot of manufacturing experience we can definitely meet your production requirements. Choosing HongZhongxin is to choose excellent service, which will definitely make you satisfied.
What is die casting?
Die casting, a manufacturing process in which molten metal is pressed into a mold at high pressure to produce metal parts, is an efficient, precision manufacturing process that is widely used in parts production in a variety of industries, including automotive, aerospace, electronics, and many other industries.
Advantages of die casting
Low cost
The equipment investment is less and the material price is relatively low, casting is to turn the raw material into a liquid at a high temperature, and then pour the melted material into the mold to form the desired shape, so there is less equipment, the material can be reused, and there will be no too much loss.
Highly flexible
Metal casting technology can manufacture parts of various sizes and complex shapes, and can be applied to a variety of alloys, such as copper, aluminum, magnesium, steel, iron, etc.
Efficient and high quality production
Molds can economically manufacture tens of thousands of parts, the shape and size of metal castings, especially precision casting parts, very close to the required machine parts, to achieve high quality, surface finish and precision are very good, so there is almost no need to cut, thereby saving materials and subsequent processing time.
On-demand customization
Support from 1-100000+ parts customization, support small, medium or large metal parts customization, can produce a variety of unique products.
Technical standards for die casting
| Name | Standards |
| Minimum part weight | 0.017 kg |
| Maximum part weight | 12 kg |
| Minimum part size | ∅ 17 mm × 4 mm |
| Maximum part size | 300 mm × 650 mm |
| Minimum wall thickness | 0.8 mm |
| Maximum wall thickness | 12.7 mm |
Die casting material
Metals with low melting temperature can be used in die casting processes, such as aluminum, zinc, magnesium, lead, copper, steel, etc. Here is an example of the common die casting alloys we use for most parts. If you need other material die casting services, please contact us, we will try to meet.
| Materials | Common Type | Characteristic |
| Aluminum Alloys | A380, A360, A390. A413, ADC-12, ADC-1 | Low density, high strength, high thermal conductivity, electrical conductivity, cutting performance and small linear shrinkage, with excellent casting performance and filling capacity. |
| Zinc Alloys | Zamak-2, Zamak-3, Zamak-5, Zamak-7, ZA-8, ZA-12, ZA-27 | It has good fluidity and corrosion resistance, good surface finish, and is more cost-effective and strong. |
| Magnesium Alloys | AZ91D, AM60B, AS41B | High strength, low viscosity, good fluidity, strong corrosion resistance, easy to fill complex cavity. |
Die casting surface finishing
NAME |
DESCRIPTION |
MATERIALS |
COLOR |
TEXTURE |
LINK |
|
|
|
As-machined |
The standard finish for our parts, the “as machined” finish, has a surface roughness of 3.2 μm (126 μin), which removes sharp edges and deburs parts cleanly. |
All materials |
n/a |
Stain |
|
|
|
Sand Blasting |
Sand blasting is the process of powerfully propelling, generally with high pressure, a stream of blast media against a surface to remove unwanted coating layers and surface impurities. |
Aluminum, Steel, Stainless Steel, Brass, Copper |
n/a |
Matte |
|
|
|
Anodizing |
Keeping our parts in the long term, our anodizing process resists corrosion and wear. It’s also an ideal surface treatment for painting and priming, and it looks great too. |
Aluminum |
Clear, black, grey, red, blue, gold |
Smooth, matte finish |
|
|
|
Electroplating |
Electroplated coating preserves the surface of parts and resists rusts and other defects from causing decay by applying electric currents to reduce metal cations. |
Aluminum, steel, stainless steel |
Gold, silver, nickel, copper, brass |
Smooth, glossy finish |
|
|
|
Polishing |
Ranging from Ra 0.8~Ra0.1, polishing processes use an abrasive material to rub the part’s surface to make the shine more less shiny, depending on your requirements. |
All materials |
n/a |
Smooth, glossy finish |
|
|
|
Powder Coating |
Using corona discharge, we make the powder coating adsorbed to the part, creating a more wear-resistant layer with a typical thickness ranging from 50 μm up to 150 μm. |
All metal materials |
Custom |
Glossy |
|
|
|
Wire drawing |
Brushing is a surface treatment process in which abrasive belts are used to draw traces on the surface of a material, usually for aesthetic purposes. |
ABS, Aluminum, Brass, Stainless Steel, Steel |
n/a |
Satin |
|
|
|
Painting |
Painting involves spraying a layer of paint onto the surface of the part. Colors can be matched to a Pantone color number of the customer’s choosing, while finishes range from matte to gloss to metallic. |
Aluminum, Stainless Steel, Steel |
Custom |
Gloss, semi-gloss, flat, metallic, textured |
|
|
|
Passivation |
Stainless Steel |
None |
Unchanged |
5μm – 25μm |
|
|
|
Silkscreen Printing |
Aluminum, Brass, Stainless Steel, Steel |
Varies |
N/A |
< 1 µm |
|
|
|
Black Oxide |
Black oxide is a conversion coating similar to Alodine that is used for steel and stainless steel. It is used mainly for appearance and for mild corrosion resistance. |
Steel, Stainless Steel |
Black |
Smooth, matte |
|
|
|
Alodine |
Chromate conversion coating, more commonly known by its brand name Alodine, is a chemical coating that passivates and protects aluminum from corrosion. It is also used as a base layer before priming and painting parts. |
Aluminum |
Clear, Gold |
Same as before |
|
|
|
Part Marking |
Part marking is a cost-effective way to add logos or custom lettering to your designs and is often used for custom part tagging during full-scale production. |
All materials |
Custom |
n/a |
|
|
|
Knurling |
Knurling is a unique finishing process designed to indent a component to make it easier to grip. |
All materials |
Same as before |
Matte |
|
|
|
Heat Treatment |
Heat treatment enhances mechanical properties, relieves stresses, and refines the microstructure of metals, enabling them to meet specific performance requirements for a wide range of applications. |
Steel, Stainless Steel |
Dark grey |
Same as before |
|
|
|
Pickling |
Pickling describes an acid bath designed to remove oxide scaling from a component’s surface. |
Steel, Stainless Steel |
Dark grey |
Same as before |
FAQ
How to quote?
You can get a free quote in two ways:
1. Click the "Get Quote" button on the website to upload your CAD data and project requirements (material, quantity, surface treatment, etc.).
2. Send your CAD file and project requirements directly to us via email at sales@hzxcnc.com
How long will it take to quote?
After receiving your information, under normal circumstances, we can respond to your information within 1 hour and give you a quote within 2 hours. Occasionally due to the time difference, it may be a little late, but we will contact you within 10 hours at the latest and respond to your offer within 24 hours. Please forgive us if we have kept you waiting for a while, and we will make you a perfect offer.
Is there a minimum order quantity?
We support the order from 1 part, but usually accept not less than 100 units of metal casting, because there are mold costs, so the more parts the lower the individual cost.
What are the steps of the die casting process?
There are five steps in the production of die casting products, which are: preparing the mold, injecting the material, cooling the metal, loosening the mold, and trimming the casting.
Which metal is best for die casting?
The metals commonly used in die casting projects are zinc, aluminum and magnesium, in addition, you can choose copper, brass, tin and lead for custom castings. However, it is difficult to determine the best metal because each metal alloy has its own unique physical properties, advantages and disadvantages, so you can choose according to your needs, if you are not sure, we can also give you some relevant suggestions.
Will die casting metal rust?
Whether or not to rust is usually determined by the material, castings are usually made of aluminum, zinc and magnesium, which are not mainly made of iron, which makes them resistant to corrosion and does not rust.
Adhering to the quality is the life principle of the enterprise, to provide your customized needs, and through the engineer quotation, we will use the most advanced technology and professional knowledge to provide you with high quality and low price products to meet your needs.
