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[China]
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Address: Hengjiao Industry Zone, Hengjiao Village, Shijie Town, Dongguan, Guangdong, China
Contact name:Hafrey
Dongguan Yexin Intelligent Technology Co., Ltd. |
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Custom CNC Machining Steel Parts CNC Machining Mechanical CNC Turning Stainless Steel Parts
CNC machining, an abbreviation for Computer Numerical Control machining, operates as a
subtractive manufacturing technology, autonomously removing material from raw stock guided
by computer-generated instructions. Generally, CNC machines can be classified into two types:
those that keep the raw stock stationary while rotating the cutting tool, and those that rotate
the raw stock while moving it against a stationary tool.
Various modifications and combinations of these fundamental approaches are employed, allowing
some machines to integrate both techniques for the production of intricate parts with complex
features.
Product Details
Stainless steel is highly resistant to corrosion and rust, making it suitable for situations
where a part may be exposed to the elements for a long period of time. Stainless steel is also
fairly malleable and ductile.
| Common Stainless Steel Materials | |
| No. | Properties |
| Stainless steel 304/304L | Stainless steel 304L (CNC) has excellent mechanical properties and good machinability. Resistant to most environments and corrosive media. |
| Stainless steel 316/316L | Stainless steel 316L (CNC) has similar mechanical properties to 304, with higher corrosion and chemical resistance. Ideal for marine applications. |
| Stainless steel 303 | Stainless steel 303 (CNC) has excellent toughness, but lower corrosion resistance than 304. Ideal for high volumes, due to its excellent machinability. |
| Stainless Steel 17-4 PH | Stainless steel 17-4 (CNC) - SAE grade 630 - is a precipitation hardening alloy with good corrosion resistance. Can be hardened up to 44 HRC. |
| Stainless steel 416 | Stainless steel 416 is magnetic and has a high machinability. |
| Stainless steel 2205 Duplex | Stainless steel 2205 Duplex (CNC) is the alloy with the highest strength and hardness. Suitable for applications in severe environments up to 300°C. |
| Stainless steel 420 | Stainless steel 420 provides high strength and corrosion resistance. It is the hardest of all stainless steels when hardened. |
| Stainless steel 440C | Stainless steel 440C has improved toughness and corrosion resistance due to Carbon and Chromium content. |
| Stainless steel 430 | Stainless steel 430 is magnetic and corrosion resistant. |
| Stainless steel 301 | Stainless steel 301 is corrosion resistant similar to Stainless steel 304. |
| Stainless steel 15-5 | Stainless steel 15-5 has a higher toughness than 17-4, better corrosion resistance and transverse properties compared to other similar martensitic grades. |
Stainless Steel Finishing and Post-Processing
The finish of stainless steel can vary significantly depending on the surface roughness.
However, it is typically described as shinier compared to unfinished aluminum alloys,
and it tends to have a slightly darker and more silver color.
Stainless steel offers flexibility in achieving various surface finishes, including options such as
media blasting, sanding, hand-polishing, and powder coating.
These processes can be employed to achieve a wide range of surface finish textures and
appearances.
| Name | Machining Marks |
| Brushed + electropolishing | Removed on Primary surfaces |
| Electroless nickel plating | Reduced but visible |
| As machined | Visible, light surface scratches |
| Smooth machining | Visible, light surface scratches |
| Fine machining | Slightly visible |
| Polishing | Removed on primary surfaces |
| Bead blasting | Removed for non-cosmetic, removed on primary surfaces for cosmetic |
| Brushing | Reduced for non-cosmetic, removed on primary surfaces for cosmetic |
| Powder coating | Removed |
| Black oxide | Visible |
CNC Machining Applications
CNC machining stands as a cornerstone in subtractive manufacturing, playing a pivotal role in
numerous industries. Some of the most prominent sectors leveraging CNC machining include:
1. Aerospace: Precision and reliability are non-negotiable in
aerospace applications. CNC machining
is crucial for producing intricate and accurate components for aircraft and spacecraft, meeting the
demanding standards of the industry.
2. Automotive: The automotive sector relies heavily on CNC
machining for the fabrication of
precision parts, contributing to the efficiency, performance, and safety of vehicles.
3. Aviation: Similar to aerospace, the aviation industry benefits
from CNC machining's precision
in crafting components that adhere to strict quality and safety regulations for optimal aircraft
performance.
4. Transportation: Beyond air and land, the transportation
industry, encompassing rail and
maritime sectors, integrates CNC machining for the production of robust and precise components
that endure challenging operational conditions.
These industries showcase the versatility of CNC machining, where
its capabilities are harnessed
to meet the stringent demands of manufacturing in sectors where precision, durability, and
quality are of utmost importance.
Company Profile
FAQ's
1. How much do CNC machining materials cost?
The diverse range of materials available for CNC machining introduces variability in costs,
influenced by both the specific material properties and overall characteristics.
When opting for metal parts, Aluminum 6061 emerges as a cost-effective choice.
For budget-conscious projects, ABS stands out as the most economical option.
It's essential to note that machining difficulty plays a crucial role in cost determination.
Materials like stainless steel, being harder than aluminum, pose greater machining challenges,
leading to an escalation in overall costs.
2. What are your tolerances for machined parts?
For machined parts, our tolerances typically adhere to +.005”/- .005” local tolerances across
most metal geometries and +/- 0.010" for plastics. It's important to note that these tolerances
may vary for large parts, especially concerning flatness after heat treatment.
For an "As Milled" finish, a minimum surface finish of 125 is maintained for CNC parts.
Fabricated parts come with a 0.010” dimensional tolerance and a 1° angular tolerance.
Tapped holes not explicitly designated as features in the CAD model may be machined to
the diameters specified.
Additionally, no surface treatments, such as anodizing, bead blasting, iriditing, powder coating,
etc., will be applied unless expressly paid for and acknowledged.
3. How does you ensure the quality of my parts?
After order confirmation, we conduct a thorough Design for Manufacturing (DFM) review to
pinpoint any potential issues that could affect part quality. Incoming materials undergo rigorous
inspection and verification using advanced testing equipment.
Final inspection reports are generated before shipment. Moreover, we provide the capability to
share inspection data in real-time, allowing us to collaborate on addressing any quality concerns
that may arise during the production process.
4. Can passivate my parts?
Passivation is a surface treatment that modifies the chemistry of specific metals.
Our services include passivation for purposes such as corrosion protection, increased durability,
and enhanced cosmetic appearance.
