Daming Tackles Precision Slitting Challenge with Expert Craftsmanship

As one of Daming’s key processing centers, Hangzhou Daming recently took on a tough challenge in the world of precision slitting: processing 31 ultra-thin, narrow strips of ST12-MP low-carbon steel. Each strip had to be sliced from a 1250mm wide coil to just 40mm wide, with a strict width tolerance of 0.2mm. The project required top-notch skills and attention to detail, demonstrating Hangzhou Daming’s expertise in delivering high-precision steel solutions.

The Challenge: Precision in Every Cut

The task at hand wasn’t for the faint of heart. The material—1.2mm thick ST12-MP low-carbon steel—was thin but tough, and the narrow width of each strip presented its own set of challenges. Here’s where the stakes were high:

• Slippage and Burrs: Thin strips like these are highly sensitive to tension. Even small variations in tension during slitting can lead to “strip slippage,” which causes edge burrs and compromises the overall cut quality.

• Alignment: With 31 strips being slit at the same time, any minor deviation in the positioning of one strip could cause a domino effect across the entire batch—leading to misalignment or, in the worst case, breakage.

• Packaging and Handling: Once the slitting was done, the strips had to be carefully packaged into neat bundles. Any warping or deformation could make the packaging uneven, affecting the shipment and increasing the risk of damage during transit.

Hangzhou Daming’s team knew that getting this right required a combination of fine-tuning the equipment, meticulous monitoring during slitting, and careful handling after the job was done.

Overcoming Challenges: Precision at Every Step

The solution was all about precision, both in the machinery and in the manual adjustments made during the process. Hangzhou Daming’s production team took a hands-on, detail-oriented approach to each stage:

1. Calibrating the Equipment for Perfection:

   • Before the slitting started, the slitting machine’s blade gaps and tension rollers were calibrated with extreme precision. This ensured that the blades remained parallel throughout the cut, eliminating any risk of uneven edges or inconsistent strip widths.

2. Real-Time Monitoring for Accuracy:

   • During slitting, skilled operators were on the floor, continuously monitoring the width of each strip. The positioning guide plates were adjusted on the fly, ensuring that each strip stayed within the tight tolerance range.

   • To combat the risk of deformation (a common issue with thin strips), Hangzhou Daming used a “progressive tension control” method. This approach gradually adjusted the tension from unwinding to winding, ensuring that each strip retained its straightness and flatness throughout the entire process.

3. Meticulous Packaging for Protection: After the strips were slit, each one was carefully                                                                                                                                                                Inspected and individually wrapped to protect it from scratches or damage. The strips were then bundled into groups of 10, tightly secured with steel straps to prevent any shifting or breakage during transport.

The Result: Precision, Quality, and Zero Defects

Thanks to Hangzhou Daming’s attention to detail, the results were impressive. The 31 narrow strips not only met the required width tolerance of 0–0.2mm, but they also passed with flying colors when it came to other critical quality measures:

• Edge Burrs: The edge burrs were kept to a minimum—just ≤0.03mm—well within industry standards.

• Straightness: The straightness deviation for the entire batch was controlled to less than 1mm per meter, ensuring that each strip was perfectly aligned.

When the customer conducted their on-site acceptance inspection, the strips were unpacked and laid out neatly. Not a single strip showed any warping, scratches, or other imperfections—proof that the team had achieved the highest level of precision.

Keeping the  Bar High in Precision Slitting

This project wasn’t just another order for Hangzhou Daming—it set a new standard for what’s possible in precision slitting. By taking on this complex challenge and delivering flawless results, Hangzhou Daming has reinforced its position as a leader in the field of precision steel processing.

As part of Daming’s network of eleven processing centers, Hangzhou Daming is committed to continually improving its processes and pushing the boundaries of what can be achieved in steel slitting. This successful project serves as a benchmark for the future, demonstrating the company’s ability to meet even the most demanding customer specifications with expertise and efficiency.

Looking Ahead: A Focus on Quality and Precision

Hangzhou Daming, together with the wider Daming network, is focused on driving innovation and quality in steel processing. With a commitment to precision, rapid delivery, and a customer-first mindset, the company is well-positioned to meet the needs of industries that demand nothing less than the highest quality and most reliable service.

By continuing to hone its craft and optimize its internal processes, Hangzhou Daming is set to lead the way in precision slitting, ensuring that customers receive the best steel products—on time and to the tightest tolerances.