1. Swift Transfer & Controlled Pre-cooling Moving thin blades from the heating furnace to the cooling tank too slowly will cause the workpiece temperature to drop below the Ar3 critical point before it enters the quenching pool. This leads to partial decomposition, resulting in an improper quenched microstructure that fails to meet hardness requirements. Rule of Thumb: Thin, small-sized blades must be transferred into the cooling pool as fast as possible, while larger blades require precise timing when pre-cooling. 2. Rational Furnace Loading The furnace loading volume must be reasonable. The ideal spacing between blades should match the thickness of the blade itself. Overlapping workpieces will cause uneven heating, which directly leads to inconsistent hardness. 3. Proper Quenching Pool Spacing When submerging blades into the quenching liquid, maintain a distinct distance between each piece. Packing them too tightly obstructs the rupture of the vapor blanket (steam film) near the workpieces, resulting in lower hardness on the surfaces facing each other. 4. Intermittent Quenching for Temperature Stability Do not rush to quench the entire batch in one continuous run. Monitor the drop in furnace temperature; you must close the furnace door midway to reheat the chamber when necessary. This ensures that the workpieces quenched first and last achieve identical hardness. 5. Strict Cooling Liquid Temperature Control Pay close attention to the temperature of the cooling fluid. Quenching oil must be maintained strictly between 30°C and 80°C. Operating outside this range will result in insufficient or uneven hardness across the batch.

In July 1921, a single red boat on South Lake set sail amidst stormy winds and waves, igniting the sparks of revolution across the vast land of China. From that moment on, the Chinese revolution found its steadfast helmsman, and hundreds of millions of Chinese people caught sight of the dawn of hope in the darkness. For over a century, this red boat has navigated through countless turbulent waves. Transforming from a poor and weak old China into today's world's second-largest economy, and moving from basic subsistence to a moderately prosperous society in all respects, the Communist Party of China has led its people to write the most magnificent epic of struggle in human history with sweat and blood. The martyrs who stepped forward wave after wave during the years of war, and the builders who have quietly dedicated themselves in times of peace, together built an immortal monument for the nation. The July 1st Founding Day is not only a profound look back at history, but also a clarion call of the times to forge ahead on a new journey. As the baton of history is passed into the hands of the new generation, the spirit of the Red Boat will continue to be carried forward in the veins of future generations. In the face of future opportunities and challenges, only by remembering where we started can we pave a better path forward. Let us use struggle as our pen and time as our answer, riding the waves and charging forward toward the Chinese Dream of the great rejuvenation of the Chinese nation!

Looking for reliable slitting machine accessories and industrial blades? Ma'anshan Licheng Blade Manufactory delivers top-tier cutting solutions backed by international recognition. Our complete lineup of industrial knives and mechanical accessories complies perfectly with GB/T19001-2016 and ISO 9001:2015 standard requirements. By integrating advanced manufacturing technology with certified quality control, we supply global industries with wear-resistant, high-precision slitting blades that minimize downtime and optimize cutting performance.

Are you still looking for industrial knives that meet EU standards? Still worried about blade quality control? The Slitter Knife (slitting/cutting knife) from Ma'anshan Licheng Blade Manufactory is your reliable choice. Our products have passed official authoritative tests, confirming 100% compliance with the EU RoHS 2.0 directive (Directive 2011/65/EU Annex I, (EU) 2015/863 & (EU) 2017/2102). Whether you need high-precision metal slitting or cutting for paper and plastic films, Ma'anshan Licheng Blade Manufactory can provide professional slitter blades that meet environmental regulations and offer excellent wear resistance.

As the traditional Dragon Boat Festival approaches, Ma'anshan Licheng Blade Manufactory extends our warmest wishes for a healthy, safe, and prosperous holiday to all our global partners, clients, and friends. Known as "Duanwu Ankang" in Chinese, this festival is a time for reflection, unity, and celebrating heritage. The Spirit of the Dragon Boat Festival The Dragon Boat Festival carries a rich history of over 2,000 years, marked by racing dragon boats and eating zongzi (sticky rice dumplings). At its core, the festival symbolizes perseverance, teamwork, and a deep respect for quality craftsmanship—values that resonate deeply with the corporate philosophy at Nanjing Licheng. Just as rowers synchronize their strokes to propel the dragon boat forward, our team works in perfect harmony to deliver exceptional products and services to the global market. As a trusted manufacturer specializing in high-precision industrial blades, including paper cutting slitter knives and custom wear parts, Ma'anshan Licheng Blade Manufactory leverages cutting-edge technology and premium materials to boost production efficiency for our clients. May the spirit of the Dragon Boat Festival bring health, peace, and success to you and your family. Ma'anshan Licheng Blade Manufactory looks forward to driving future growth and creating long-term value together with you.

Here are the top five factors that affect how long your paper slitter knives last: 1. Blade Material Selection The foundation of blade longevity lies in its metallurgy. Standard tool steels may wear down quickly under high-speed operations. Opting for premium materials like Tungsten Carbide, D2, or High-Speed Steel (HSS) offers superior wear resistance and hardness, drastically extending the time between regrinds. 2. Properties of the Paper Substrate The type of paper being slit plays a massive role. Coated papers, recycled stocks, and materials with high ash or abrasive filler content act like sandpaper against the cutting edge. Abrasive substrates require tougher blade grades to prevent premature dulling. 3. Slitting Speed and Friction Higher production speeds generate intense friction and heat at the cutting point. Without proper management, this thermal stress can degrade the blade's microstructure, leading to micro-chipping. Controlling tension and monitoring machine speed is vital. 4. Incorrect Blade Alignment and Setup Improper setup is a leading cause of premature blade failure. Incorrect cant angles, excessive side pressure (over-load), or poor depth settings create unnecessary friction, causing rapid edge degradation and poor slit quality. 5. Preventative Maintenance and Sharpening Schedules Waiting until the blade fails or creates excessive dust is a costly mistake. Establishing a strict preventative maintenance schedule—including regular cleaning and precision regrinding—ensures the knife consistently operates at peak performance.

Choosing the right commercial kitchen equipment is a critical factor in maximizing food yield and reducing waste. For delis, restaurants, and butcher shops, the debate between serrated vs. smooth meat slicer blades remains a central focus for achieving precision cutting and optimal presentation. While both blade types have a place in food preparation, recent industry data highlights distinct performance differences depending on the product being sliced. Smooth Meat Slicer Blades: The Champion of Precision For ultra-thin, razor-sharp precision, smooth meat slicer blades (often referred to as plain-edged blades) are the industry standard. They are uniquely engineered for clean cuts through lean meats, such as turkey breast, ham, and roast beef, without tearing the product. Best For: Deli meats, raw beef, carpaccio, and firm cheeses. The Advantage: Minimizes friction, reduces food shredding, and yields beautiful, paper-thin slices that enhance presentation and portion control. Maintenance: Requires regular sharpening using a built-in or external sharpener to maintain its razor edge. Serrated Meat Slicer Blades: The Heavy-Duty Alternative Conversely, serrated meat slicer blades feature a scalloped, tooth-like edge designed to saw through tough exterior surfaces while protecting a delicate interior. Best For: Crusty artisan breads, fibrous meats (like corned beef or jerky), and dense vegetables like tomatoes. The Advantage: The teeth easily puncture hard crusts or tough tissues without crushing the food underneath. Maintenance: Highly durable and stays sharp longer than smooth blades, though they generally require specialized professional sharpening.

The Food Safety and Inspection Service, in collaboration with commercial kitchen safety boards, has officially issued updated safety standards regulating automated meat slicer blade guards. The new directive aims to drastically reduce workplace injuries and cross-contamination risks in commercial delis, supermarkets, and food processing facilities. Under the updated 2026 regulations, all newly manufactured automated meat slicers must feature enhanced, heavy-duty blade guards that prevent accidental operator contact during both operation and high-speed cleaning cycles. Statistics show that meat slicer blades remain one of the leading causes of severe lacerations in the foodservice industry, often occurring when guards are removed for sanitation. Key Highlights of the New Safety Standards: Zero-Proximity Barriers: Blade guards must now feature interlocking sensors that automatically cut power to the meat slicer blade if the guard is displaced by even a millimeter. Antimicrobial Materials: Guard components must utilize certified NSF-grade antimicrobial alloys to prevent bacteria buildup in hard-to-reach crevices. Toolless Disassembly: Manufacturers must design guards that can be safely cleaned without requiring maintenance tools, reducing the time blades remain exposed.