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Shearing Machine Techniques for Minimizing Burrs and Imperfections

shearing machine

Shear technology may seem very simple in theory. Once the cut is complete, lifting the cut piece should reveal the accurately cut piece. However, for most technicians, this is far from the case, and defects (such as burrs) often increase their workload.

Table of contents

I.What are burrs in shear technology?

II.Why use burr-free shearing technology?

III.Ways to reduce burrs in shear technology


Whether manufacturing auto parts, mechanical equipment, electronic components or precision hardware, burrs are an important issue in shearing machine technology. Most technicians are looking for ways to reduce defects such as burrs.

However, the exciting news is that with the right combination and processing, these pitfalls can be avoided. While no single solution can completely eliminate burrs, operators can employ various methods to reduce burrs in shear technology, resulting in high-quality clean cuts that save time, effort and resources.

I.What are burrs in shear technology?

In shear technology, metal workpieces are sometimes left with imperfections such as ridges or protrusions, often referred to as "burrs." These defects typically occur when the cutting tool enters or exits the sheet metal.

Technicians in almost every industry encounter this phenomenon, resulting in the need for additional work. Many factors, including processing methods, materials involved and the skill level of the operator, can cause this material to deform.

Here are some common types of burrs and how they form:

  1. Cutting Burr: During the cutting process, a portion of the material falls off, causing a tear, leaving a cutting burr.
  2. Poisson Burrs: When a cutting tool is applied to a workpiece, downward tension causes its sides to bulge, bend, twist, or extend, leaving Poisson burrs on the edge of the workpiece.
  3. Flange burr (exit burr): Also known as exit burr, flange burr refers to the burr produced when the tool is lifted from the workpiece at the end of cutting.
  4. Tear burrs: Sheet metal sometimes gives way during the cutting process, causing pieces of material to come loose and form tear burrs.
  5. Thermal burrs (slag or slag): Thermal cutting of the cutting machine causes the surface of the metal workpiece to melt and then form hot burrs before solidifying.

II.Why use burr-free shearing technology?

Burr formation is a common phenomenon faced by technicians in all walks of life. Since burrs require additional deburring work, consuming additional time, effort, and resources, burr-free cutting is always desirable. Here are some reasons why operators and businesses need to ensure burr-free shearing techniques:

Helps overcome competition:

Burrs reduce the quality of workpieces, and high-quality cuts are critical for industries such as automotive, mechanical equipment, electronic components and hardware.

Improved process efficiency:

Burr-free cutting reduces deburring work, thereby increasing the efficiency of the production process.

Lower operating costs:

Burr-free cutting reduces additional work and resource consumption, lowering operating costs.

Improved precision and accuracy:

Burr-free cutting ensures workpiece precision and compliance with engineering requirements.

Improved quality:

Burr-free cutting improves the surface quality of the workpiece, making it more durable.

Promotes safety:

Burr-free cutting reduces safety risks for laser operators and end users.shearing machine

III.Ways to reduce burrs in shearing machine technology

In shear technology, there are many factors that lead to the formation of burrs. Here are some ways to reduce burrs:

  1. Use high-quality tools: Choosing high-quality tools can reduce the formation of burrs.
  2. Adjust cutting speed: Appropriate cutting speed can reduce the generation of burrs.
  3. Control cutting pressure: Proper cutting pressure can reduce the formation of burrs.
  4. Use proper lubricant: Correct selection and use of lubricant can reduce the occurrence of burrs.
  5. Optimize cutting parameters: Adjusting the parameters of the cutting machine, such as tool speed, feed speed and cutting depth, can reduce the formation of burrs.
  6. Regularly maintain the machine: Carry out timely maintenance and upkeep of the machine to keep the cutting tools sharp and the machine stable, which helps to reduce burrs.
  7. Using appropriate auxiliary tools: such as fixtures, molds, etc., can help fix the workpiece and reduce the generation of burrs.
  8. Increase the support of the workpiece: Increasing the support of the workpiece during the cutting process can reduce the vibration and deformation of the workpiece, thereby reducing the formation of burrs.
  9. Training operators: Provide training to enable operators to master correct operating techniques and processes, which will help reduce the generation of burrs.


Burrs are defects formed during the shearing process of the shearing machine and require deburring, which wastes time, labor and other resources. If not corrected, burrs can affect the accuracy and quality of workpieces and components used in production. Although the common occurrence of burrs makes them appear to be a natural part of shearing, operators can minimize their occurrence by taking a number of steps. These measures include optimizing cutting parameters, using high-quality tools, regular machine maintenance, etc. Burr-free cutting not only improves the quality and accuracy of workpieces, but also improves production efficiency, reduces costs, and ensures the safety of operators and end users.

Expert help is just a few steps away!

If you need more help or advice, please feel free to contact our expert team. KRRASS will provide you with professional guidance and competitive quotations.


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