Ningbo Kang Ying Health Technology Co., Ltd. is dedicated to the design, development and manufacturing of precision sheet metal. As a full-service metal manufacturer, we provide diversified precision metal manufacturing services to our global customers. Our products are involved in many fields such as security, IT, automotive, medical, finance, new energy, intelligent health, etc. and are exported to more than 20 countries and regions such as Europe, North America, Japan and Australia.
Why Choose Us
Professional Technical Team
Our company has a team of engineers specialized in product development, who can skillfully use industrial design software and Chinese and English language, and can exchange design solutions with foreign customers skillfully.
Advance Equipment
The company pays attention to quality control and investment in testing equipment, with perfect parts testing equipment, sound insulation room, push and pull testing equipment, life testing equipment; to ensure that incoming parts, production process parts.
Strong R&D Capability
We have a professional R&D team, including software and hardware engineers, which can develop and design products independently. We also provide customers with services from design concept to finished products.
Customer-focus
Our customers are our top priority. We take the time to understand their unique needs and requirements in order to provide tailored solutions that exceed their expectations.
Turnkey Metal Fabrication Services
Ningbo Kang Ying Health Technology Co., Ltd offers a complete full-service approach from concept to completion. We can produce a finished product to your satisfaction based on the product design drawings you provide, including manufacturing, sourcing, finishing and value-added assembly.
Custom Metal Fabrication Service
Ningbo Kang Ying Health Technology Co., Ltd offers a full range of metal fabrication services from metal ideas creation to finished products. We provide all processes of metal processing, including laser cutting, stamping, CNC bending, welding, surface treatment and other metal processes.
Ningbo Kang Ying Health Technology Co., Ltd offers precise and fast metal laser cutting services for a wide range of industries. Our factory have 4 laser cutting machines, their power are 700W, 1500W, 3000W and 6600W.
Metal Stamping And Punching Service
Ningbo Kang Ying Health Technology Co., Ltd has a range of stamping and punching equipment for in-house production, from prototype to high volume production, our deep drawing design and production team delivers fast prototypes and high quality finished products on spec, on time and on budget, and will produce your small, medium or large deep drawing stampings with the highest level of precision and quality.
Sheet metal bending makes it possible to quickly and precisely turn sheet metal into products with curves and angles according to your requirements. Ningbo Kang Ying Health Technology Co., Ltd offers a wide range of CNC bending tools to meet your simple to complex sheet metal bending projects.
With its different welding lines, Ningbo Kang Ying Health Technology Co., Ltd is able to offer its customers a wide range of metal welding processes that can correspond to different materials. Our extensive experience and capabilities can help your company to get the quality welding services it needs, while reducing lead times and production costs.
Metal Centerless Grinding And Polishing
Metal grinding and polishing is a quick, easy and accurate method for finishing tubular metal parts that require tight tolerances. As a professional metalworking service provider, Ningbo Kang Ying Health Technology Co., Ltd can provide high quality polishing and grinding services for your metal fabrication needs.
Ningbo Kang Ying Health Technology Co., Ltd monitors the quality of the finish throughout the process to ensure that your custom metal parts and components are of high quality and meet the required specifications for the intended use.
Sheet metal bends are formed using metal bending. Metal bending is a process by which metal can be deformed when applying force to the subject, which causes it to bend at an angle and form the anticipated shape, which often results in it being in a 'v' or a 'u' shape. Metal bending service is utilized in a wide range of industries, including construction, manufacturing, automotive, and aerospace. Metal bending service offers flexibility in design, allowing for customization and the creation of unique structures and components. Whether it's for architectural panels, automotive parts, or industrial machinery, metal bending service plays a vital role in transforming metal into functional and aesthetically pleasing products. Metal bending service is crucial in various industries, including construction, automotive, manufacturing, and fabrication.
Benefits of Metal Bending Service
Accuracy
Programmed laser cutters and CNC bending machines with high-quality software, as well as top-notch equipment, can produce accurate bends.
No tooling investment
The laser cutting and sheet metal bending processes don't require specialised tooling, as common tools usually can produce the desired bends. This means limited tooling investment.
Speed of manufacture
Sheet metal parts can be produced fast, enabling big quantities of components to be produced in a short space of time.
Fewer parts required
Making a workpiece from one piece of material instead of multiple, through the use of joints, reduces time, errors, complexity, and failure points.
Less weight
There is a complex range of bends available. Strength can be achieved without the need for too much material. This reduces weight, which is an advantage for every step in the supply chain.
Lower costs
CNC cutting, laser cutting and bending cut down on the manual labour required, and parts can therefore be made by less-skilled workers, leading to lower-end costs.
Types of Metal Bending
Air Bending
During this process the work piece comes into contact with the outside edges of the die, as well as the punch tip. The punch is then forced past the top of the die into the V-shaped opening without touching the V.
Air bending is the type of bending where the least amount of contact is made. The equipment only touches the material at 3 points: the punch, tip and the die shoulders. Seen as though the tonnage doesn't produce the bend, you don't need as much as you would do when using the coining method.
Air bending is the most widely used type of metal bending and it's not difficult to see why, as there are many advantages to this technique. Because the punch tip doesn't need to be pushed past the surface of the metal, much less weight is required to bend in comparison to bottom bending and coining.
Bottom Bending
The difference between air bending and bottom bending is that there is a difference in radius between the two. It differs from coining as the punch and the tie don't make full contact with the material, and there isn't enough tonnage to make an imprint into the metal.
Bottom bending has many advantages, such as greater accuracy and less spring back when using the tooling, which makes it a safer option when considering metal bending techniques.
Coining
Coining is a bending process in which the punch and the work piece bottom on the die. This produces a controlled angle, which leads to little spring back. There is more tonnage required on this type of bending than in air bending and bottom bending.
The advantages of coining are that, in order to produce outstanding results, accuracy is essential and that is precisely what the coining method can provide. Along with being accurate, repeating the results is also an easy task when it comes to using this technique. Spring back is also less common when using coining, meaning that the metal is less likely to return to its original state.
Folding
The metal folding technique involves folding the surface part of the sheet metal to form the desired bend. Folding uses clamps, which hold the metal piece in place and apply force to fold the metal at a specified angle to create the sheet metal bend.
Clamping beams will hold the longest part of the metal sheet. As the beam rises and folds the sheet metal, the bending beam can move up or down the workpiece.
Benefits: What's useful is that, with the folding method, it is possible to create several folds in the same piece of metal, creating a two-sided channel or a square or rectangular hollow tube.
The finalised bend angle is influenced by the folding angle of the beam. This process can handle large sheets of metal and offers a very limited risk of damaging the sheet.
Wiping
The method of wiping involves applying force to the metal, which bends the workpiece into an angular shape by holding it between a pad and a die, then sliding the wiping flange downwards.
Similar to the folding technique, it is a plastic deformation of sheet material. Wiping enables you to round the workpiece that is being bent, which can be done by adding angle tangents from the radius to both the die and the flange.
Benefits: The method of wiping offers some advantages for sheet metal bends, such as excellent precision and limited surface damage, when compared to other methods. The applied force is spread evenly across the workpiece's surface, and you are able to bend a workpiece multiple times in one run.
Important to note: The method is one of the more expensive techniques. It doesn't support bending angles over 90° because of the geometry of the wiping flange, bent workpieces tend to create a moderate spring-back effect, and curved shapes require custom tooling.
Joggling
Joggling is a process where a machine bends the metal in both directions creating an 'S' or 'Z' shape.
Joggling involves shaping a sheet metal section by section through the use of stringers and formers. This method has been found to be particularly helpful for when you need to bend an extended workpiece in a periodically repeated pattern.
The process pushes a sheet metal workpiece into an equipment unit or a brake.
It bends the metal by 20 to 30 degrees, using the formers. The part should be released, turned over and bent again until the joggle is achieved.
Benefits: The benefits of the joggling technique are that it is very versatile in creating different shapes, has low production costs, and also has minor spring-back effects.
In terms of weaknesses, it might cause deterioration of a workpiece's surface.
Rolling
Mostly used for manufacturing large workpieces in the construction sector, rolling is the method used for making tubes or cones in different shapes or bigger radius bends, using a rolling machine.
Metal rolling machines have the capability of feeding sheet metal between two rollers, which leads to the sheet emerging into a curve.
To increase the shape of the curve, the operator of the machine will reverse the rollers and then run the metal back through the rollers in the opposite direction. This process is repeated until the desired bend is achieved.
Rotary Bending
Rotary bending is a complex process of sheet metal bending. The process tends to create pipes, which can offer a variety of central line radiuses. Metal bending service process involves bending a tube with a mandrel inserted inside so that it fits the exact outside diameter.
Benefits: Rotary bending can rotate a tube to a maximum of 180°, making it highly versatile. With this, the method can bend the workpiece several times in one run, from different angles. As well as this, the method shows limited spring-back effects.
However, some weaknesses of rotary bending include: being expensive, deterioration of a workpiece's surface, and complexity of the overall process.
What Is Metal Bending Service Used For?
Sheet metal typically refers to the use of material under 3mm thick, but laser cutting and bending can be used on materials in excess of this with ease. Metal bending flexibility of the process regarding range of materials, thicknesses and complexity of the parts it can produce makes it ideal for making a wide array of parts, used in every industry from automotive, transport, domestic appliances, furniture, industrial equipment and more.
Metal bending is often combined with mechanical fasteners such as bolts or more permanent fixings such as rivets or welding. This gives even more flexibility, as parts of different thicknesses can be attached to one another depending on the particular use of each. There are a variety of other value-added operations such as threading, chamfering, countersinking, boring, etc. That can further increase the flexibility and versatility of sheet metal components.
In many cases, and with the advent of modern cnc cutting and bending machines, parts can be produced in one component, whereas previously welding or other joining techniques would be required.
Design and planning
Determine the desired shape, dimensions, and specifications of the metal component.
Material selection
Choose the appropriate metal type and thickness based on the application and required strength.
Preparation
Clean and mark the metal for bending, ensuring accurate measurements and references.
Bending
Use the selected bending method and tools to shape the metal into the desired curvature or angle.
Inspection
Check the metal bending for accuracy, dimensions, and quality.
Finishing
Perform any necessary finishing operations, such as grinding, polishing, or painting.
Assembly and installation
If applicable, assemble and install the metal bending component in the final product or structure.
Tips for Metal Bending Service
Whilst metal bending is a useful strategy for many different types of projects, metal bending can be easy to mess up if you get the technique wrong. To ensure you create the professional metal bending service you are after, follow these helpful tips.
Choose the right materials
Due to some metals being more malleable than other metals, you need to be aware of the use of heat, and if it is necessary to reduce any cracking and weakening of the material.
Galvanised steel: A resilient and corrosion-resistant metal. If you bend galvanised steel, it can be moulded into the appropriate shape for your project. The bending process is usually quite simple, and in most cases, galvanised steel will be more malleable than shaped stainless steel forms.
5052 aluminium: With high workability as well as low weight, aluminium is easy to bend as it is extremely malleable. This makes cracking rare.
Stainless steel: Mostly used for manufacturing within the food and medical industries, it has corrosion resistance, with some grades excelling at resistance. Different grades of stainless steel will perform differently but it can be prone to work hardening.
Spring steel: Can be malleable when annealed but, once the work has hardened, it tends to require heat in order to bend again.
Copper: This tends to be very malleable. Its antimicrobial benefits also give copper an added edge.
Mild steel: No heat tends to be required for mild steel, making it very malleable.
Avoid bending to a sharp internal corner
It's important to avoid bending to a sharp internal corner when producing metal bending because it could cause cracking or weakening of the metal. This can be avoided by having a radius on your tool.
Pro tip: The thickness of the material you're producing should be the same as the inside bend radius.
Use a press brake
Brakes are extremely useful for creating a clean bend, as the metal won't be wavy or even warped.
The two biggest advantages of a mechanical press brake have to be the speed and accuracy it offers when metal bending.
Protect the surfaces
Take care of the appearance of your metal by avoiding scratching its surface.
Pro tip: The best way to avoid scratches is to use masking tape anywhere that might come into contact with something hard. Similarly, you could also use wood blocks to protect the section when bending.
Bend allowance
Bending metal involves pushing, pulling, or stretching the material. Therefore, you need to calculate the bend allowance because this will offer you reliable numbers to work from when you lay out a flat sheet.
Certain factors need to be considered with this, such as material thickness and internal radius size.
Bend allowance is compensation for what happens to the material when it is stretched and formed from a flat pattern into the desired bend. By working out this bend allowance, you can figure out how much of a flange will remain when you' ve made the desired bend.
What Are the Benefits of Maintaining a Metal Bending Service?
Once designed and programmed, due to the lack of tooling, and the high levels of automation possible (many shops are able to run 24/7 with a handful of personnel monitoring production), sheet metal parts can be produced very quickly, enabling large quantities of components to be produced in relatively short time.
If design considerations are made adequately, sheet metal parts can be extremely accurate, with laser cut holes being within ±0.1mm. There is a high level of repeatability here, as programmed laser cutters and CNC bending machines with the proper software and equipment produce with low levels of variability.
Welding often requires multiple processes to complete a part; often the heat can distort the material and requires straightening, and weld spatter needs to be removed via time consuming and labor-intensive grinding and polishing. Neither of these issues are present with bending – the part is ready to go straight from production.
Due to the complexity of bends available, stiffness and strength can be achieved whilst using relatively little material, thus also reducing the part weight. This is beneficial for every step in the supply chain including transport.
Due to the advances in technology, CNC cutting and bending cuts down the manual labour required to produce parts, the sheet metal bending process has benefited from this tech more than most, with CNC controlled tooling, parts can be produced by less-skilled workers in less time, all resulting in a lower end cost.
The laser cutting and sheet metal bending processes often eliminate the need for specialized tooling, as most manufacturers will carry a line of common tools that can produce most standard bends. This means no tooling investment and significantly shorter lead times, as there is no need to wait for complex tooling to be produced, tested or adjusted.
Making a component from one piece of material instead of multiple parts with joints, reduces time, potential errors, failure points and procurement complexity.
At its core, metal bending is about deforming a metal sheet along a linear axis. The metal grain structure is altered during this process, impacting its properties and appearance. Basic principles to consider with metal bending service:
Definition: Bending transforms a flat sheet into a bent profile. This involves applying force to the metal, causing it to deform around a straight axis.
Metal Grain and Properties: Just as wood has a grain, so does metal. Bending can stretch, compress, or both, altering this grain and the metal's strength and flexibility.
Bend Radius Balance: The bend radius, or curvature, is crucial. Too tight a radius can lead to breakage, while too broad may not serve the intended purpose. The right balance is critical to maintain the structural integrity of the piece.
Parts Designed for Metal Bending Service
Parts that are to be processed using bending equipment should be designed from the outset with the limitations and characteristics of the process in mind ("Designing Sheet Metal Components Using Laser Cutting and CNC Sheet Bending").
Bend Radius
When a material is formed into bends, the outer surface is stretched, and the inner compressed. This gives the bend a rounded corner. This is termed as the bend radius and differs from one material to another. Other factors that determine the size of this radius are tooling geometry and material condition.
It is good practice to ensure that all bend radii on a particular part are equal, as this greatly simplifies tooling set up and reduces cost.
Hole to Edge Distance
when bends are produced, the material is stretched. This causes internal stresses that are evenly distributed across the part. If a hole or slot is made too close to the bend, these stresses will be focussed on this hole, and deform it.
Bend to Bend Distanc
when making bends, there is a physical limit enforced by the size and shape of the tooling, on how close bends can be together. Bends on the same side of the sheet that are too close will interfere with the tooling, and bends on opposing sides will be impossible to reach due to the width of the bottom tool.
Common instances of this occurring are where 'U' sections are required, with the legs or upright flanges being multiple times longer than the horizontal section. In some cases, extra depth tooling can be used.
If your bends need to be close together workarounds can be used to enable this, as well as implementing supplementary processes such as welding or bolting to get to the correct geometry. Get in touch for more information if this is required.
Spring Back
due to the elasticity of metals, bends will tend to return to their original position to a small degree, this is termed 'spring back'. In practice, this generally only amounts to 1-2° and is accounted for in the brake press control. It does however mean that highly acute angles should generally be avoided when designing a part.
Pressing Tolerances
as with any process there are tolerances on dimensional accuracy, CNC control has reduced these in recent years, but they are still pertinent, particularly when designing complex or precision parts.
Due to the variation in sheet metal composition, thickness and processing, bending always has some degree of variation. These should be considered when designing parts and each process should be utilised to its strengths. For example, if a critical pattern of holes is required, try to use a single flat, laser cut pattern for these, rather than relying on holes on bent flanges.
Our Factory
Our company has a team of engineers specialized in product development, who can skillfully use industrial design software and Chinese and English language, and can exchange design solutions with foreign customers skillfully. The company pays attention to quality control and investment in testing equipment, with perfect parts testing equipment, sound insulation room, push and pull testing equipment, life testing equipment; to ensure that incoming parts, production process parts.
Our Certificate
Ultimate FAQ Guide to Metal Bending Service
Q: What is metal bending?
Q: What tools are used in metal bending?
Q: What are the common types of metal bending?
Q: Can metal bending service handle complex shapes?
Q: How accurate can metal bending be?
Q: Can Metal Bending Service be used for automotive parts?
Q: How does metal bending service contribute to aesthetics?
Q: Can metal bending service be combined with other fabrication processes?
Q: Can metal bending service be used for architectural applications?
Q: Can complex shapes be bent?
Q: What materials can be bent?
Q: Is metal bending suitable for large-scale projects?
Q: Can metal bending be combined with other fabrication processes?
Q: What are the benefits of metal bending?
Q: What is the turnaround time for metal bending?
Q: How does metal bending service contribute to structural integrity?
Q: Are there any limitations to metal bending service?
Q: Is custom metal bending more expensive than standard bending?
Q: What are some examples of metal bending fabrication processes combined?
Q: What are the different types of bending techniques?
Q: What tools are used in metal bending?
Hydraulic press.
Brake press.
Rolling machine.
Angle grinder.
Torch.
It is important to use the appropriate tools and techniques to ensure that the metal is bent safely and accurately.
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