In metal fabrication, precision is non-negotiable, especially when it comes to die-casting and aluminum sand-cast parts. High-precision CNC (Computer Numerical Control) machining has become a vital process in refining these cast parts into high-quality, functional components that meet strict specifications. Whether you’re working with heavy-duty mining equipment, renewable energy solutions, or custom machinery, CNC machining ensures superior quality, precision, and performance.
CNC machining involves the use of computer-controlled tools to remove material from a workpiece, producing precise parts with tight tolerances. This advanced technique is essential for achieving the accuracy required when working with die-cast and aluminum sand-cast parts. By utilizing multi-axis CNC milling, 5-axis machining, and CNC turning, manufacturers can produce complex shapes and intricate details with ease.
Before CNC machining can be applied, it's important to understand the casting methods used to create the initial parts:
Die Casting: In die casting, molten metal is injected into a mold under high pressure to produce detailed parts with tight tolerances. Typically made from aluminum, zinc, or magnesium, die-cast components are lightweight, durable, and offer a smooth surface finish.
Aluminum Sand Casting: Sand casting involves pouring molten aluminum into a sand mold. This traditional process allows for the creation of larger and more complex parts, though it often requires post-casting machining to meet the necessary surface quality and dimensional accuracy.
While these casting processes are effective for producing bulk parts, they usually require additional CNC machining to achieve the final product specifications needed for functional integration.
Cast components, whether produced by die casting or sand casting, often need to be refined through CNC machining to achieve the desired levels of precision and surface finish. Here’s why CNC machining is crucial:
Achieving Tight Tolerances: CNC machines excel in maintaining tight tolerances, ensuring that every part conforms to exact engineering specifications. This level of precision is essential for industries such as mining, renewable energy, and automotive, where even slight deviations can result in failure or inefficiency.
Improving Surface Finish: Cast parts typically have rough surfaces that may require significant post-processing. CNC machining removes excess material, providing a smooth and polished finish that is not only functional but visually appealing.
Fabricating Complex Geometries: Multi-axis CNC machines can create intricate shapes and detailed features that would be difficult or impossible to achieve using traditional methods. Whether it’s precise holes, grooves, or contours, CNC machining allows for a high level of customization.
Material Versatility: CNC machining is capable of handling a wide range of materials, including aluminum, which is frequently used in die casting and sand casting. This allows manufacturers to create parts that meet performance requirements while maintaining strength, durability, and cost-efficiency.
The combination of die casting, sand casting, and CNC machining serves various industries that require custom and high-performance metal components. Here are some key applications:
Mining Equipment: In the mining industry, heavy-duty components like gear housings, brackets, and structural elements need to be fabricated with high precision. CNC machining ensures that these parts are both accurate and durable enough to withstand harsh operating conditions.
Renewable Energy: Components for wind turbines, solar panels, and other renewable energy products often rely on CNC-machined aluminum parts for their strength and lightness. By ensuring tight tolerances and optimal surface finishes, CNC machining enhances the performance and lifespan of renewable energy products.
Heavy Machinery & Equipment: For industries such as automotive and industrial machinery, CNC machining is essential for producing complex components like engine parts, transmission housings, and structural elements. High precision ensures parts fit together seamlessly and perform reliably under extreme conditions.
Custom Metal Fabrication: CNC machining is a key part of custom metal fabrication, allowing manufacturers to produce one-off or small-batch parts with highly specific requirements. Whether it’s for specialized aerospace components, medical devices, or custom machinery, CNC machining ensures high-quality results every time.
As a leading metal fabrication manufacturer, we specialize in high-precision CNC machining for die-cast and aluminum sand-cast parts. Our advanced CNC machining services, including multi-axis milling, 5-axis machining, and CNC turning, ensure that your components meet the highest standards of quality and accuracy.
We work with a variety of materials, including aluminum, stainless steel, and specialty alloys, to produce parts that are durable, reliable, and cost-effective. Our expert team is committed to delivering custom metal fabrication solutions that meet your exact specifications, whether for mining, renewable energy, automotive, or industrial applications.
Large steel casting
aluminum casting and machining
High-precision CNC machining is a cornerstone of modern metal fabrication, especially when refining die-cast and aluminum sand-cast parts. It enables industries to produce parts with tight tolerances, smooth finishes, and complex geometries required for optimal performance. Whether you're looking for precision components for mining equipment, renewable energy solutions, or custom machinery, CNC machining ensures that your parts meet the highest standards of quality and functionality.
At Openex, we offer expert CNC machining services that take your die-cast and sand-cast parts to the next level. Our commitment to precision and quality guarantees that your parts will meet even the most demanding performance criteria.
Description:
CNC Machining for Stainless Steel Large Flange
Material:
Stainless Steel
Finish:
Grinding, Polishing
Machine Tools:
Cutting Machine, Lathe, Drilling Tools
Dimensions:
As Required
Dimensions Measuring:
Coordinate Measuring Machine (CMM)
Large diameter flanges can be manufactured out of any steel material grade. They come in flange faces that include:
RTJ (Ring Type Joint)
RF (Raised Face)
FF (Flat Face)
Some of the most common applications for the large diameter flanges are for subsea / onshore pipelines and ASME pressure vessels.
Custom made large diameter flanges can come as large as the customer requires and made to their design specs. Our extensive heavy-duty manufacturing capability combined with a large inventory of plate stock allows us to meet the most complex and challenging quality and delivery requirements. We leverage numerous fabrication methods, including plate burning, CNC and conventional machining, automated flange drilling, robotic welding with automatic positioning, and many other state-of-the-art technologies to produce flanges with precise tolerances and fine surface finishes. Our expertise spans all flange types, including blind and reducing flanges, spectacle and paddle blinds, O-rings and Victaulic rings, adapter rings, and many other custom flanges. We can provide thermal stress relief, die-stamp/etching identification markings, and apply protective coatings, all in-house.
As an ISO compliant manufacturing company, we perform both in-process and final inspections to ensure flange quality. In addition to traditional dimensional measurement equipment, we use high-end laser devices to verify tolerances. We offer non-destructive testing (NDT) on flanges for the most stringent applications to confirm they are defect-free. We provide material traceability and inspection reports to document that our products meet the highest standards of excellence.
Send us your drawing, and we will reply with a quote. We offer same day shipment for stock items and provide rush and emergency services when time is a factor or service is interrupted. For more detailed information about our standard and custom flange products, contact us at sales3@openex.com.cn now.
| Flange Manufacturing Capabilities | ||
| General Capabilities | Flange Marking | Thermal Stress Relieving |
| CNC Drilling | Taping | |
| CNC Machining | Coating | |
| Conventional Machining | Non-Destructive Testing | |
| Counter Boring | Robotic Welding | |
| Counter Sinking | Automatic Welding Positioners | |
| Materials | Carbon Steel | A572-50 |
| A105 Forging | A588 | |
| A36 | HSLA | |
| A516-70 | Stainless Steel (304/304L & 316/316L) | |
| Finishing Services Available | Painting | Marking |
| Coating | Stamping | |
| Tolerance (+/-) | Industry Standard Tighter Tolerance* | |
| Inspection Services | Laser Tracker Inspection | |
| Non-Destructive Testing | ||
| *Traditional Dimensional Measurement Equipment | ||
| Additional Information | ||
| Industry Focus | Water Works | Heavy Industry |
| Wind Tower | Machine Tool | |
| Utilities | Marine | |
| Aerospace | Military | |
| Agricultural | Mining | |
| Architectural | Oil Field | |
| Auto/Truck/Transportation | Steel Mill | |
| Chemical | Packaging/Converting | |
| Construction | Power Generation | |
| Food | ||
Those customized rectangular flanges are used for heat exchangers.
A flange is a method of connecting pipes, valves, pumps, and other equipment to form a piping system. It also provides easy access for cleaning, inspection or modification. Flanges are usually welded or screwed.
Openex is a global manufacturer of various flanges. Upon request, we manufacture the forging of flanges and blinds that are custom-designed to customer dimensional requirements. We have an extensive track record of producing flanges from a wide variety of material grades. Our extensive raw material inventory allows us to manufacture forged flanges to the most challenging customer-specified product chemistry requirements.
General Capabilities:
Flange Manufacturing Types :
Materials:
General Processing:
Diameter:
Up to 10 meters OD
Contact us at sales3@openex.com.cn or call us at +86 186 5928 0806 for more information about manufacturing for flanges and to receive a free project quote today.
Dimensions: Diameter 4200mm, Thickness 390mm
Material: 16MnIV
Overlay Weld Material: 309L Stainless Steel, 347 Stainless Steel
Those overlay weld tube sheets are the key parts of water cooling pressure vessels.
Weld overlay melts one metal—the cladding layer—onto the surface of another metal of similar composition and melting point, forming a base material that is resistant to corrosion and wear. The highly versatile process may require multiple passes to properly mix and bond the metals, while meeting the design and material requirements of the cladding layer.
Customers commonly use weld overlay to balance corrosion resistant properties and costs, often coating an inexpensive metal, like carbon steel, with a more expensive base layer, such as stainless steel. Our weld overlay process uses readily available metals, reducing lead times, for a wide range of applications, including tube sheet, flanges, fittings, pipes, valves, pressure vessel nozzles and tube sheets for heat exchangers.
Tube Sheets and flange manufacturing is one of Openex's specialties. We're a tube sheet/flange maufacturer that specializes in almost all tube sheets up to 12 meters in diameter and special flanges in all styles that measure up to 10 meters O.D based on your requirements.
We have a large array of multi-spindle milling-drilling CNCs. With our CNC array, the dimension tolerance, including flatness, parallelism, perpendicular, circularity, and cylindricity can be achieved to an unrivaled tight level.
Except for tens of multi-spindle CNCs, we also have more than 11 deep-hole milling-drilling CNCs to meet some special tasks which might need holes deep up to 1200mm.
Quality Assurance
One of the essential workhorses for product verification is our Coordinate Measuring Machine(CMM). We use it every day to qualify rapid prototypes and machined parts that have complex geometries with tight tolerances.
At Present, we have two ZEISS CMMs-MMZ G large bridge CMM and ACCURA II bridge CMM, and one laser tracker Leica AT901.
Our quality assurance program is focused on providing confidence that quality requirements will be fulfilled, both by our internal staff and through our clients’ expectations.
Contact us at sales3@openex.com.cn or call us at +86 186 5928 0806 for more information about tube sheets and to receive a free project quote today.
Wind turbine flanges are ring-shaped connectors that are used to assemble the bodies of the steel towers supporting the wind turbines. Tower flange is an important wind power component for tower connection which is installed with six or seven flanges in a wind turbine. Tower Flange consists of three parts: Bottom Flange, Middle Flange, and Top Flange.
Our flanges are widely present in the following industries: Oil and Gas, Hydro, Mining, Offshore, Petrochemical, Naval, Piping, Wind power, and Nuclear.
Openex is your complete machining and steel fabrication solution — a one-stop shop — for critical wind turbine parts, such as large housings, torque arms, flanges, and more. And we help you seamlessly navigate the entire process from CNC machining and welding to painting and coating.
Components we've manufactured for wind energy
Rotor hub
Large housing
Gearboxes
Torque arms
Wind power towers
Flanges
Gears
Bearings
Other metal structures.
We offer metal fabrication of excavator bucket to customers in the heavy equipment industry. The excavator bucket would be used on medium to large excavators. Using the latest fabrication technology available, we applied our cutting, bending, welding, and machining capabilities to form the body from abrasion resistant steel plate. Our large welding robots and positioners ensured accurate and precise welds, which were UT tested to guarantee their strength.
We manufacture gearbox that are efficient, durable, and cost-effective and can be supplied in standard or modified versions. Our goal is not just to build or rebuild your gearbox, but to manufacture a product that provides an additional capability that requires less cost to maintain.
You can rely on our high-end manufacturing capabilities to deliver high-quality gearbox and gearbox internal components that exceed and outlasts OEM specifications. Our processes are super streamlined for quality assurance, fastest lead times, reliability, and best ROIs to our clients.
Over 20 years of heavy fabrication experience, capabilities and vast production equipment, we work with a wide variety of materials for all types of OEM turbine or engine projects.
For innovative OEMs of engines and turbines, Openex has extensive experience producing the following:
Openex is a global manufacturer of various flanges. Upon request, we manufacture the forging of flanges and blinds that are custom-designed to customer dimensional requirements. We have an extensive track record of producing flanges from a wide variety of material grades. Our extensive raw material inventory allows us to manufacture forged flanges to the most challenging customer-specified product chemistry requirements.