Introduction: What Is Bur Level and Why It Matters
The formation of burr during the machining operation cannot be ignored. It plays a significant role in the performance of material, appearance, and the safety of stainless-steel strips. The formation of burr is influenced by the ductility, hardness, tool, and machine condition. The stainless-steel strips are used across various industries, from aerospace to medical, so it is important to control the burr formation in order to achieve better performance of the strips. The excessive formation of burr leads to difficulty in the assembly of components and decreases the life of the tool.
Define bur (burrs) and bur level after slitting
Burrs (or “burs”) are small pieces of material that remain attached to the edge of a stainless-steel strip after machining operations such as cutting, slitting, and punching. Bur level refers to the measurement of the height of the unwanted, sharp ridge of material remains attached to the workpiece edge. The burr level indicates whether the edges of stainless-steel strips are smooth or rough. If there are sharp or uneven edges along the stainless-steel strips, it can cause the following problems:
- Cut/Injuries: Sharp edges can cause injuries to workers during machining and assembly of components.
- Welding: The lack of penetration and porosity defects are common for the sharp edges of stainless-steel strips. These defects occur when the molten material does not flow smoothly along edges.
- Leaks: If there are sharp or uneven edges along the strips, then Gaskets or weld seams may not fit correctly and thus result in leakage.
Industry Standards for Bur Level
Generally, the industries limit the bur level to ≤10% of strip thickness. For example, if a strip thickness is 0.5 mm, then the level of bur should not exceed more than 0.05mm. This limitation is necessary to ensure the safety, finishing, and precision of strips.
The industries like automotive, aerospace require a low bur level to ensure the performance, and safety. If there is a high level of bur on the material, there is a high chance of cuts to operators during the assembly of components. Deburring reduces these hazards and ensures compliance with the safety standards for workers. Deburring ensures the tight fitting, precision, and this is necessary to avoid the welding defects such as voids and lack of fusion. Deburring maintains the quality, appearance, and smooth edges for long-term performance of materials.
How Deburring Improves Tube Forming and Welding Quality
Deburring plays an important role in easing the shaping and increasing the performance of tubes. Deburring also reduces the chance of welding defects near the heat-affected zone. The following are some advantages of the deburring process:
- Injury: During assembly or forming of components, deburring reduces the chance of cuts on the hands of workers.
- Welding: Deburring reduces the formation of welding defects and ensures smooth welding.
- Scratches: Deburring reduces the chance of scratches and maintains their surface integrity during formability and fitting of tubes. Due to deburring, the tubes maintain their surface finishing.
- Leaks: In critical applications involving hydraulic lines, exhaust systems, and flexible connectors, deburring edges is vital for creating perfect, leak-free seals at every joint.
Jianglin Deburring Capabilities
Jianglin has an excellent setup of modern machines to remove the burr material from strips. These machines provide precise cutting and dimensional accuracy without damaging the stainless-steel strips. Table 01 shows the Jianglin deburred strip features and their industrial benefits. The following are the processes that Jianglin used to meet the diverse industrial requirements:
- Edge trimming: In this initial process, the irregular material from the edges of stainless-steel strips is removed and create a uniform width.
- Slitting Precision: This process ensures dimensional accuracy according to customer requirements and maintains tight tolerances. This is done by minimizing the creation of burr from the start of the process.
- Double-Side Deburring: In this, if there is a burr remaining on the edges. Then, burr again remove from both sides of the strips’ edges to ensure the safety for workers, and consistent performance of stainless-steel strips.
Table 01: Key Benefits of Jianglin’s Deburred Stainless Steel Strips
Key Feature | Customer Benefit | Application Example |
Double-Side Deburring | Smooth, safe edges; reduced risk of cuts and scratches | Flexible metal hoses, exhaust tubing |
Precision Slitting (≤5% Burr Level) | Uniform strip width and stable forming performance | Automotive exhaust tubes, welded pipes |
Edge Trimming | Improved sealing and weld integrity | Fluid transport tubes, high-pressure lines |
Real examples from flexible hose and automotive tube customers
The following real examples from customers show how the Jianglin advanced edge trimming and deburring methods play an effective role in the performance of their products:
Example01:
A leading flexible metal hose manufacturer was facing the issue of minor leaks and fatigue cracks caused by burrs during forming. The flexible metal hose manufacturer shifted its sourcing from another company to Jianglin burr free strips (≤5% of strip thickness). This burr level in strips was achieved with precise edge trimming and double-sided deburring; the hose manufacturer reported tight sealing and a significant decrease in leakage and failures. This improvement enhanced both product reliability and production efficiency.
Example 02:
An automotive exhaust tube manufacturer was facing the issue of welding seam irregularities due to uneven strip edges. After partnering with Jianglin Steel, Jianglin provides them with round-edge and precision-slitted stainless-steel strips. After this, the automotive exhaust tube manufacturer achieves smooth welding seams, fewer defects, and reduced tool wear. Due to precisely slitted stainless-steel strips, the exhaust tube manufacturer achieves the strict quality standards required in the automotive industry.
Conclusion
The burr free stainless-steel strips play a critical role in the performance of automotive car parts and flexible hoses. These burr free strips make them safer, prevent leaks, and allow for better welding. Jianglin Steel uses special processes to trim and clean the edges of stainless-steel strips. This guarantees smooth, high-quality material that is easier to work with, causes fewer problems during manufacturing, and helps the tools last longer.
If your production demands high precision and burr free stainless-steel strips. Then, contact Jianglin Steel because they have proven their expertise and ensure quality, safety, and reliability.
