Using a reasonable heat treatment process for H13 medium-to-heavy plate shear blades can provide the necessary mechanical properties and significantly extend their service life. However, if heat treatment defects occur due to improper process design or operational errors, the blade's load-bearing capacity will be severely compromised. This leads to premature failure and a shortened lifespan. Common heat treatment defects include overheating, burning, decarburization, cracking, uneven hardened layers, and insufficient hardness. After H13 steel blades have been in service for a certain period and internal stresses have accumulated to a critical limit, a stress-relief tempering process should be performed. Failure to do so may result in cracking caused by these internal stresses during continued service.

The roughness of the shear blade has a great impact on the blade's precision and durability. The ground surface of the blade is actually formed by countless grooves engraved by numerous abrasive grains on the grinding wheel. The quenched HRC60° CCr12MoV cutting edge uses an 80-grit medium-soft K-grade white corundum grinding wheel. By maximizing the grinding wheel's linear speed and moderately reducing the blade workpiece's linear speed and longitudinal feed rate, a surface quality with better roughness can be achieved! Licheng knife, excellence comes from every detail!

Pre-Quenching Preparation for Shearing Blades: Cleaning: Thoroughly remove all residual cutting fluids and tapping oils from drilled and tapped holes. Coating: Air-dry the blades and apply a specialized anti-oxidation and anti-decarburization coating. Drying: Place in a drying oven at a constant temperature of 60°C for 2 hours. Plugging: After removal from the oven, use asbestos or refractory clay to plug all through-holes and blind-tapped holes. Lichen Blades: It is these meticulous details that forge the superior quality of our cutting edges!

9CrSi remains a dominant choice in the shearing machine market and among end-users due to its exceptional cost-performance ratio. However, 9CrSi is highly sensitive to overheating during the quenching process. If the surface carbon content drops to 0.6%–0.7% due to decarburization, the shearing blade may still achieve a surface hardness of HRC 60–62, but its flexural strength (bending strength) will plummet by 40%–50%. To address this, Licheng Knife has implemented a specialized "Zero-Holding Time Quenching & Toughening" process based on extensive experimental data. By minimizing the residence time of the blades in the heating furnace, we significantly reduce oxidation and surface decarburization.

W6-grade High-Speed Steel (HSS) is increasingly favored for shearing, planing, and rotary cutting blades due to its exceptional toughness and red hardness. However, most full-HSS blades are long and thin; coupled with high quenching temperatures, this often leads to significant deformation. Furthermore, their high tempering resistance makes traditional straightening extremely difficult. To address these challenges for long HSS blades, we utilize the Thermal Counter-Strike Correction method. By heating the blade to between 300°C and 450°C, the material achieves optimal plasticity under thermal conditions. Controlled hammering at this temperature allows for effective deformation and precise alignment. Licheng knife: We win over customers with professionalism.

The key advantages of Single Shaft Shredder Blades： 1. Four-Way Rotatable Design (Extended Lifespan)Four Cutting Edges: Most single shaft blades are square with a concave surface. This allows you to rotate the blade 90° once one edge becomes dull.Cost Efficiency: You essentially get four "new" blades for the price of one before needing a full replacement or regrinding. 2. Individual "Bolt-on" Replacement Localized Repair: Unlike double-shaft blades that are often integrated or stacked, single-shaft blades are bolted individually onto the rotor.Minimal Downtime: If you hit a piece of "tramp metal" (unshreddable debris) and chip a blade, you only need to replace that specific $10$-$20$ unit rather than dismantling the entire shaft assembly. 3. High-Performance Alloy Options Because these blades are smaller and modular, they can be manufactured from premium specialized steels to suit different materials:DC53 / D2 (SKD-11): Excellent for general plastics and high-wear applications.H13: Better for materials that generate higher heat.Tungsten Carbide Tipped: For extremely abrasive materials like glass-filled plastics. 4. Optimal Cutting Geometry Shearing Action: The blades act like scissors against the stationary counter-knives. This "clean cut" reduces dust (fines) and prevents the material from tearing or melting.Adjustable Gaps: The distance between the rotor blades and the counter-knives can be finely tuned to maintain sharp cutting performance as the blades wear down. 5. Concave Surface Design Aggressive Grabbing: The concave (hollow-ground) face of the blade creates a sharper angle, allowing the rotor to "bite" into hard blocks of plastic or wood more effectively than a flat blade.

LD (7Cr7Mo2V2Si) is a high-strength, high-toughness steel refined through vacuum carbon deoxidation. It was originally developed by adjusting the alloying elements of the patented cold-work die steel, SVSCO-DIE. Key Characteristics and Metallurgy High Austenite Alloying: The steel features a high degree of austenitic alloying, leading to a significant secondary hardening effect. Optimized Carbon Content: Its carbon content is lower than the "Balanced Carbon" rule recommended by G. Steven. This specific chemistry allows the steel to maintain high hardness without sacrificing impact toughness. Alloying Elements (Cr, Mo, V): The addition of Chromium, Molybdenum, and Vanadium facilitates secondary hardening, ensuring superior strength and excellent wear resistance. Performance and Applications Performance Comparison: LD steel outperforms W6 and offers several times the wear resistance of 9CrSi and Cr12MoV.

Single shaft shredder blade is an industrial cutting tool installed on the single shaft shredder rotor (spindle), specially used to tear, shear and crush various waste materials, such as plastic blocks, wood boards, rubber products, thin metal sheets, cardboard and so on.In industrial production, they determine the processing capacity and efficiency of shredders, especially suitable for the recycling and reuse of materials such as plastic, rubber, wood, and metal.