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Sheet metal Fabrication Manufacturer

Custom Precision Professional Stainless Steel Sheet Metal Bending

Sheet metal bending is a way of shaping metal sheets into different forms. It involves using a press brake and a suitable die to create a three-dimensional shape by applying force on the metal sheet. We are experts in sheet metal bending and we offer customized solutions for your bending needs.

    What is Sheet Metal Bending?

    Sheet Metal Bending is a way of making a V-shaped bend on a metal sheet. It works by placing the sheet on a V-shaped mold called a die. Then, a sharp tool called a knife presses down on the sheet, forcing it into the V-shaped gap and creating a bend with the angle you want.

    CBD Sheet Metal Bending Process

    Bending, also known as press brake forming or folding, is a way of making metal sheets into different shapes by bending them along an axis. The sheet metal usually keeps the same thickness after bending.

    This process is done with punches and dies press brakes. A die is a tool that has a lower V or U shape. The metal sheet is pushed into the die to create a bent part.

    Our machines have CNC controls that adjust the depth of the bending and keep the bending radius as small as possible.

    CBD Custom Sheet Metal Bending Servies

    ●The CBD provides professional Custom Sheet Metal Bending Services, offering a variety of seven different methods.
    V-bending - this method uses a v-shaped tool and a matching die to create bends with different angles on the sheet metal, such as acute, obtuse, or right angles.
    Air Bending - this method leaves a gap (or air) under the sheet, which gives more flexibility in adjusting the bend angle than regular v-bending, and also improves the accuracy by reducing the springback effect.
    Bottom bending - this method needs a higher force press to achieve accurate bend angle control.
    Wipe Bending - this method holds the sheet metal on a wipe die with a pressure pad, and pushes a punch on the edge of the sheet to make it bend over the die and pad.
    Roll Bending - this method uses sets of rollers to move (and bend) the metal stock into circular, tubular, conical, or curved shapes.
    Rotary Draw Bending - the sheet metal is fixed to a rotating die and pulled around the die to make a shape that matches the required bend radius, with an internal support mandrel to avoid wrinkles on the surface and reduce the chance of scratches.
    Customized Shape Bending - HSJ offers custom single-piece molding services for efficient production.

    Custom Sheet Metal Bending Tolerances


    Custom Sheet Metal Bending Materials

    Materials of sheet metal bending parts. Those bending metal plates include SGCC galvanized plate, SECC electrolytic plate, SUS stainless steel (model 201 304 316, etc.), SPCC iron plate, white copper, red copper, AL aluminum plate (model 5052 6061, etc.), SPTE, spring steel, manganese steel. 

    Advantages of Custom Sheet Metal Bending

    Custom sheet metal bending allows you to create a wide range of complex shapes and geometries that suit your specific needs.
    Custom sheet metal bending can achieve precise angles and dimensions that are accurate and consistent.
    Custom sheet metal bending is generally cost-effective, compared with other methods that involve extensive material removal or joining.
    ●Custom sheet metal bending can create aesthetically pleasing designs that enhance the appearance and functionality of your products.

    How to Control Sheet Metal Bending Tolerances?

    ●Choose the appropriate material thickness and hardness for your bending project. Different materials have different variations in thickness and springback, which affect the final bend angle and radius.
    Avoid applying tolerances that are too tight or unnecessary. Consider the type of fit you need, such as a press fit or a sliding fit, and the shape of the sheet metal, such as the diameter or the radius.
    Measure the near side of the bends, rather than the far side, as they are more precise and reliable.
    Use the same machine and tooling for the same batch of parts, as different machines and tools may have different tolerances and limitations.
    Check the quality of the cut edges and formed edges, as they are used as the datums for positioning the workpiece. Make sure they are smooth and free of burrs or defects.
    The tolerances for bending sheet metal in our operations are less than 5.0 for sheets with a tolerance of ±0.1 and 5.0 or more for sheets with a tolerance of ±0.3. Any deviations beyond this range can be attributed to improper operation. Our objective is to maintain the tightest possible control over sheet metal bending tolerances.

    Choose CBD For Custom Sheet Metal Bending

    ●Competitive Pricing:
    We base our quotes on the current market prices of materials, exchange rates, and labor costs, ensuring fairness and accuracy.
    Quality Assurance:
    Our team of 15 skilled engineers and 5 QC members, led by Mr. Luo, our Gerneral Manager and top leader, with 20 years of experience in renowned workshops Hitachi, has been committed to maintaining the highest quality standards. We are always ready to offer guidance and support.
    Sample and Mass Production Lead Time:
    Sample lead time is 3-7 days, while mass production lead time depends on the order quantity:
    200-500: 7-15 days
    500-2000: 15-25 days
    2000-10000: 25-35 days
    Specialization in Sheet Metal Fabrication and CNC Machining:
    We excel in sheet metal fabrication and CNC machining, ensuring precision and quality in our work.
    Energetic Teamwork:
    Our team enjoys festivals, goes on team outings, and holds table meetings to stay motivated, inspired, and energized.
    One-Stop Services:
    We provide one-stop services, including design verification, data assessment, feedback, sample production, QC, mass production, project summaries, and more.
    Quick Response and Professionalism:
    We reply to inquiries swiftly and provide professional verification, sending requests to our quotation team and offering timely feedback.
    Quality Control Teamwork:
    Our QC team ensures that all materials, processes, and labor are of the highest quality, checking products from beginning to end.
    Customized OEM and ODM Services:
    We offer personalized experiences, including material choice, solution matching, surface treatment assessment, logo design, packaging, and delivery methods.
    Flexible Delivery Methods:
    We offer various delivery options, including express (3-5 days), air (5-7 days), train (25-35 days), and sea (35-45 days).

    Custom Sheet Bending Application 

    Computer Enclosure 
    The OEM Laser Cutting service provides custom sheet metal parts for computer cases, including enclosures, host shells, chassis, accessories, cabinets, and various precision metal bending parts for electronics. The materials used include Aluminum 5052, Carbon steel, Stainless steel, etc.

    Electronic power box

    Material: secc、spcc、sgcc
    Surface treatments finish: Powder coating and deburred.
    Process: sheet metal forming bending
    Sheet metal bending tolerance: +/-0.1mm

    The Frequently Asked Questions (FAQs) Regarding Sheet Metal Bending

    What is the application of sheet metal bending parts?
    Sheet metal bending parts are widely used in various sectors of manufacture, such as electrical and electronics enclosures, racks, doors, furniture, brackets, beams, frames, and supports. Sheet metal bending is the process of deforming a material to an angular shape by applying force on a workpiece. There are different methods of sheet metal bending, such as press brake bending, roll bending, and deep drawing. Each method has its own advantages and disadvantages, depending on the type of bend, the material, and the production volume.

    Some of the factors that affect the quality and accuracy of sheet metal bending parts are the bending force, the die width, the bend allowance, the k factor, and the springback. These factors depend on the material properties, the thickness, the bend radius, and the bend angle of the w ork piece. Engineers and designers need to consider these factors when designing sheet metal bending parts for mission-critical applications.

    How to select materials for precision metal bending?
    There are several factors to consider when selecting materials for precision metal bending, such as the material strength, corrosion resistance, weight, finish options, and processability. Here are some tips to help you choose the right material for your project:

    ●Choose a material that doesn’t require finishing, such as stainless steel, aluminum, or copper, to save time and cost.
    Choose stainless steel if your parts need welding, as it has high strength, durability, and resistance to heat and corrosion.
    Choose the right gauge, or thickness, of the material, depending on the bend radius and angle. Thinner materials are easier to bend, but may not be suitable for high-stress applications.
    Choose a material with good processability, or the ability to be formed without cracking, tearing, or warping. Some materials, such as high-carbon steel, titanium, or magnesium, may require special tools or treatments to be bent.
    By following these tips, you can ensure that your material selection meets the performance, feasibility, and cost-effectiveness criteria for your precision metal bending project.

    What is sheet metal bend allowance?
    Sheet metal bend allowance is a measure of how much extra material is required for bending a sheet metal part. It is the difference between the sum of the two outer dimensions of the bend and the flat length of the sheet metal1. The bend allowance depends on the material thickness, the bend angle, the inside bend radius, and the k-factor of the material2. The k-factor is a constant that represents the position of the neutral axis in the bend, where the material neither stretches nor compresses1. The bend allowance can be calculated using the following formula:
    BA is the bend allowance in meters;
    theta is the bend angle in degrees;
    pi is the mathematical constant, approximately equal to 3.14;
    r is the inside bend radius in meters;
    K is the k-factor of the material;
    T is the material thickness in meters.
    The bend allowance helps engineers and designers to determine the accurate length of the sheet metal before bending, so that the final product meets the desired specifications. 

    What metals can bend well?
    Some metals that can bend well are gold, silver, steel, copper, and aluminum1. These metals have high malleability, which means they are easily bent without breaking or cracking. Malleability depends on the atomic structure of the metal, as well as the temperature and pressure applied to it. Pure metals are more malleable than alloy metals, which are mixtures of different metals. Bending metal also requires considering factors such as the material thickness, the bend angle, the bend radius, and the bend allowance. These factors affect the bending force, the accuracy, and the quality of the bend.