CNC Machining Metal Parts
XYC Prototype: Your Trustworthy CNC Machining Metal Parts Manufacturer!
Shenzhen Xie Yicheng Machinery Equipment Co., Ltd. is a professional processing prototypes equipment and service provider. Our company was established in 1997 and is located in Shenzhen, China, mainly aiming to markets such as the United States, Japan, South Korea, the Philippines, and India. We provide CNC processing, sheet metal bending, 3D, injection molding and other services, and use a variety of industrial-grade materials to build functional components in the automotive, medical, and consumer electronics fields.With over 25 years of production experience, our team specializes in 3D printing, CNC machining, injection molding, and sheet metal fabrication to meet virtually any complex geometry part or finish requirement.
Rich Experienced
With over 25 years of production experience, our team specializes in 3D printing, CNC machining, injection molding, and sheet metal fabrication to meet virtually any complex geometry part or finish requirement.
Well Equipped
Our production center is equipped with multi-axis CNC milling machines, CNC engraving machines, wire cutting machines, hand grinders, surface grinders and other equipment. We can quickly process complex parts for prototypes, small batches or high-volume production.
Quality Assurance
We conduct dimensional and visual inspections of each product during and after production, and strictly implement ISO 9001, AS 9100, ISO 14001 and ISO TS16949 quality standards.
Customized Services
We provide customized services for our products, include its dimensions, materials, and support OEM and ODM orders.
Machined parts are components that are crafted using the machining process. But what exactly is machining? Machining involves the use of subtractive cutting machines such as mills, lathes, and grinders to create a desired part. Although these machines employ different techniques, the goal is ultimately the same – to remove material from a workpiece and create the desired shapes. Some of the most commonly used metals in CNC machining services include aluminum, stainless steel, copper, titanium, magnesium, zinc, and mild steel. Sometimes, we may use metal alloys in the production of machined parts.
Features of CNC Machining Metal Parts
Accurate Dimensions
Our CNC machining services range from simple 'as machined' workholding to complex geometries, with EDM and grinding machines available upon request, offering tolerances as low as 0.05mm (0.0020in).
Rich Processing
We are able to cater for more complex annealing, powder coat anodizing and plating requirements to manufacture components requiring special colors or material options such as titanium or nickel.
Fast Delivery
We use 3-axis milling and 5-axis indexing milling processes to manufacture parts in over 30 engineering-grade plastics and metals, producing custom prototypes and end-use production parts in as little as 1 day.
Quality Assured
After completion of processing and production, we provide first article inspection (FAI) reports and material certification for all metal parts to ensure that they comply with AS9100 and ITAR standard appearance.
Application of CNC Machining Metal Parts
CNC machining and the aerospace sector have a long history together. Metal aircraft parts are machined with the highest level of accuracy. For applications that are safety-critical, this is absolutely necessary. Additionally, there are many possibilities available to aerospace engineers thanks to the variety of technical metals suitable for CNC. In the aerospace sector, CNC machining has a variety of trustworthy applications. Engine mounts, fuel flow parts, landing gear parts, and fuel access panels are a few examples of machinable aerospace parts.
CNC milling machines are frequently used in the automotive sector for both production and prototyping. Extruded metal can be machined into a variety of components, including gearboxes, axels, valves, and cylinder blocks. Contrarily, CNC machinery is used to create components like dashboard panels and gas gauges out of plastic. For making unique custom parts, CNC machining is also helpful in the automotive sector. With CNC, other replacement parts can also be produced. This is due to the quick turnaround times and the absence of a minimum part quantity requirement.
The military and defense industry has needs that are similar to those of the aerospace industry. CNC systems are used in a lot of different ways in these industries, from making complicated custom designs for the bodies of weapons to making the parts inside of missiles.
Additional crucial needs for equipment used in the healthcare sector are precision smooth surface finishes. Many of these are implanted into a patient’s body and stay there, such as bone screws and plates. Therefore, it is crucial to make sure the patients are not in pain. Injection molding can be used to create some plastic components. However, CNC machining is the only method for producing metal components and any complicated elements.
Due to the limitless opportunities in the field, the robotics and automation industry has come a long way but is still in its early phases. By producing parts that fulfill the required functions, CNC machining offers the means to accommodate these possibilities. These include, among others:
- Robotic arms
- End effectors
- Sensors
- Fixtures
- Jigs
- Controllers
- Electric Vehicle
Every electric car that comes out of the factory has fewer moving parts than its predecessors that had engines that burned fossil fuel. CNC machining is the only way to do this because it can make many parts in a single piece, which its predecessors couldn’t do.
Benefits of CNC Machining Metal Parts
Eliminating Human Error and Inconsistencies
When you make a part or product by-hand or using conventional methods, you can’t achieve the same degree of consistency and accuracy as you can using CNC machinery. CNC machines use design software, detailed model references, and fine-tuned precision tools to produce and replicate multiple parts that are virtually identical (with an average variation of less than 0.020mm—sometimes as little as 0.003mm). Even the most advanced conventional machines can’t duplicate these results.
This means that you’ll get an extremely uniform end product. In industries where high uniformity matters (such as the automotive, aerospace, dentistry, and medical industries), this is a major advantage. It’s also a must-have for companies building complex machines or electronics that require different parts to fit together perfectly. Any slight variation in size, shape, or texture could cause the final product to malfunction. With CNC machinery, you can make almost any object and replicate it over and over—even if it’s incredibly complex and detailed.
Speeding Up the Manufacturing Process
Unlike manual manufacturing or conventional machinery, which requires an engineer to operate or supervise the process, CNC machinery is a more hands-off method. Most CNC machines operate automatically without any direct input or control from engineers. The machine is ready to go as soon as it receives its instructions from the computer and the manufacturer supplies the raw materials. This means that you can fabricate parts much faster, as there’s no manual labor or excessive downtime required. Some machines can even operate 24/7.
Using Fewer Resources
One of the advantages of using CNC machinery is that you’ll maximize resources at every stage of the product development process. In the early stages, you only need a skilled engineer or programmer to create a digital model of the design and program the machine. When it’s time to manufacture the product, the CNC machine is largely self-sufficient (but may be monitored by an operator). It can also be programmed to reduce waste and only use as much raw material as absolutely necessary.
Reducing Manufacturing Costs over Time
Using fewer resources and labor also leads to cost savings. When you conserve your resources, you can either reinvest what you saved into manufacturing more parts or you can reduce the retail price of your end product to gain a competitive advantage and attract customers. And, when you outsource your product development to a full-service CNC machinery provider, you’ll also save on overhead costs. The manufacturer is responsible for purchasing software licenses and the machinery, repairing or replacing machines and cutting tools, and hiring staff to oversee the process. You’ll only pay for the final results.
Metal Types of CNC Machining Metal Parts
There is a multitude of metals available for CNC machining. We will look at a selection of commonly used metals used within CNC machining. These recommendations also apply to CNC turning and multi-axis machining.
Titanium is a particularly strong and resilient metal whilst maintaining an excellent strength-to-weight ratio. It is highly workable and can be welded with ease. Although it conducts heat well, it possesses poor electrical conductivity. Whilst titanium responds well to anodising for a clean finish and protection, it reacts unfavourably to polishing. Titanium is lightweight and offers high strength, and has brilliant corrosion resistance and high-temperature resistance. For this reason, it is a popular choice for aircraft industry parts, biomedical and military. A popular titanium grade is Ti6Al4V (also known as TC4 and Grade 5).
There are many different grades of stainless steel, which are categorised into four main types: Ferritic, Austenitic, Martensitic, Duplex. The most common Stainless Steel is Austenitic, which is our focus today. Their chemical structure includes Manganese, Nitrogen and Nickel, which provides good machinability and weldability. The three most common grades used in CNC machining processes are:
SS304 - This is the most commonly used stainless steel and is highly corrosion-resistant. SS304 is frequently used for producing pipes, kitchen accessories, and within industrial and automotive industries. This stainless steel has better weldability and formability, meaning it is used for screws, machinery parts, car headers and food handling equipment.
SS303 - This grade is often used to machine shafts, gears, nuts and bolts. SS303 is not ideal for heat-treating or cold forming due to the presence of sulphur.
SS316 - This steel is incredibly strong yet is easy to weld, which makes it perfect for marine grade use. Again, the high resistance to corrosion makes it ideal for architectural, industrial and automotive purposes. Medical implants and surgical instruments also make use of this stainless steel. It is also implemented within the aerospace industry.
Aluminium 7075: Is a high-grade metal with excellent strength. However, its strength can make it more challenging to produce designs with more complexity. Al7075 is ideal for CNC machined parts which require sustained durabilities, such as frames within the automobile and aerospace industries. Al7075 has great properties such as ductility, toughness, high strength with good fatigue resistance. This means it is a common material choice for high-stress structural components in aerospace.
Aluminium 6061： However, has far better workability and is generally considered to be an economical grade. It has good atmospheric corrosion resistance but low resistance to corrosion from chemicals. Al6061 is the most commonly used aluminium grade and is ideal for automobile parts, frames and much more. Aluminium 6061 is generally seen as a general-purpose aluminium, with good strength to weight ratio and good machinability. However, when exposed to saltwater, it has poor corrosion resistance and is not as strong as other aluminium alloys required for more demanding applications.
Magnesium AZ31: Although aluminium has an excellent strength-to-weight ratio, AZ31 can be up to 35% lighter whilst maintaining the same strength. As you can imagine, this means it is also higher on the price scale. Lightweight and durable, AZ31 is great for aircraft components, power tools and laptops. However, despite good workability, it does have some flammable properties.
Brass is highly versatile and is commonly used in plumbing systems. It also tends to be used in musical instruments and cosmetic applications, and home decor. This is because it is highly workable and can achieve an extremely high polish, making it aesthetically pleasing. In addition to this, it is naturally resistant to saltwater corrosion and is devoid of flammable properties. Brass is also used for electronic hardware, commercial fittings and aerospace parts. As it is a copper-zinc alloy, brass does not become brittle at low temperatures. It is a great choice for pipe fittings, with excellent thermal conductivity, and its attractive colour options make it a popular option for products that require a high-quality finish. Brass is also one of the easiest metals to CNC Machine.
EN 1045 steel is highly workable and particularly suitable for welding. This steel grade shows high strength levels and tends to be more economical than stainless steel. Like stainless steel 303, it is often used for gears, nuts and other resilient mechanical parts. It is a good steel for applications requiring greater strength or hardness, such as shafts, axles, bolts and studs.
D2 Steel is another member of the steel family and is significantly strong and durable. D2 Steel is also highly resistant to abrasion and wear. The strength and hardness of D2 steel make it suitable for parts that need high structural integrity and resistance to bending.
Secondary Processes for CNC Metal Parts
The main disadvantage of metal parts is their weak corrosion resistance. In an environment where there’s high humidity, you’ll see bare metal rust in 3-5 days. If you zoomed in with a microscope, you could watch the metal rust and corrode immediately. There are secondary processes that are used to prevent corrosion, and increase the durability of metal. These processes include plating, heat treating, and powder coating.
Plating
Plating metal parts allows you to use the advantages of metal: lower cost, higher strength, good machinability, etc. as well as improve the corrosion resistance of the parts. metal parts are often plated with zinc, chromium, or nickel. The thin layer of plating adds visual appeal, and helps avoid rust and corrosion in harsher environments. Plating metal parts does come at a higher cost, but it’s still cheaper than buying stainless metal or titanium.
Heat Treating
Heat treating is a secondary process used to make metal parts harder and more durable. The metal parts are heated up to a certain temperature, and then cooled at a specific rate that slightly changes the physical properties of the metal. Different heat treatments can affect the metal’s hardness, resistance to wear, tensile strength, and malleability. Most heat treated metal parts are hardened or quenched.
After the parts are hardened, there is another heat treatment process called tempering. This process makes the hardened parts less likely to crack. Lastly, a process called annealing. This process reverses the effects of heat treatments.
Powder Coating
Powder coating is a dry paint process that adds a decorative and durable coating to parts. After the parts are machined, they’re sprayed with a powder that attaches to the metal. Then the parts are heated or baked in an oven to cure the coating. Powder coating offers a strong layer of protection, and the thickness can be adjusted to add more or less. Powder coating is a very environmentally friendly form of finishing. You can also adjust the look and color of powder, making it more or less glossy, and more or less textured.
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Frequently Asked Questions of CNC Machining Metal Parts
Q: What is the meaning of CNC in machining?
Q: What is CNC in motor parts?
Q: What is the difference between CNC and machining?
Q: Is CNC machining easy?
Q: What are CNC parts used for?
Q: What parts of a car are machined?
Suspension parts.
Exhaust components.
Fuel rails.
Dowel Pins.
Fluid system components.
Q: Which type of motors are mostly used in CNC machines?
Q: How much does a CNC machine cost?
Q: Why use CNC machining?
Q: Why is CNC machining better?
Q: How long does it take to learn CNC machinist?
Q: What is the most common steel for CNC?
Q: What is CNC machined steel?
Q: What steel is used for machining?
Q: What metals are used in milling?
Q: What does a CNC cut with?
Q: Can you CNC machine steel?
Q: What is machining metal?
Q: Why is CNC machining expensive?
Q: Can stainless steel be CNC machined?
As one of the most professional CNC machining metal parts manufacturers and suppliers in China, we're featured by quality products and good service. Please rest assured to buy cheap CNC machining metal parts from our factory.
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