Billet Shear Blades
Extreme Heat & Impact Resistance | Dedicated Billet Shear Blades for Continuous Casting & Rolling
Yuan Li Knife custom-engineers multi-hundred-ton extra-heavy-duty billet shear blades dedicated to integrated steel mills, continuous casting machines, and roughing mill rolling lines.
Billet shearing represents the most demanding extreme operating condition in metal shearing: facing large cross-section square billets, slabs, or round bars at extreme temperatures of 800°C to 1150°C, the cutting edge must endure thousand-ton shear impact loads instantaneously while resisting aggressive rapid thermal shock cycles induced by high-pressure water cooling. Yuan Li Knife meticulously selects electroslag remelted (ESR) heat-resistant alloy tool steels, delivering peerless high-temperature red hardness and superior resistance to thermal fatigue heat checking.
Core Performance Guarantees of Yuan Li Billet Shear Blades
- Superior High-Temperature Red Hardness & Temper Resistance: Crafted from premium hot-work tool steels (ESR H13 / 1.2344 / 5CrNiMo), preserving cutting edge strength and tenacity under elevated temperatures and pressures without rapid plastic deformation or collapse.
- Outstanding Thermal Shock & Fatigue Resistance: Specialized vacuum forging produces a refined, uniform microscopic grain structure that thoroughly prevents surface craze-cracking propagation and spalling under severe cyclic water cooling.
- Deep Heavy-Tonnage Forging for Grain Densification: 3D multidirectional upsetting and forging eliminates internal porosity and segregation, endowing both core and cutting edge with exceptional impact energy absorption and fracture toughness.
Operating Conditions & Shearing Specifications
Compatible Equipment Series
Continuous casting square billet hot shears, hydraulic billet shears prior to roughing mills, forging hot cut-off shears, and heavy-duty hydraulic head/tail cropping shears.
Compatible High-Temperature Steel Billets
Carbon steel billets, alloy steel large cross-section blooms, stainless steel slabs, and various high-temperature round forging bar stocks.
Key Factors in Billet Shear Blade Maintenance & Extended Service Life
- Cooling Water Circulation Control: Ample water cooling is essential during hot shearing; however, direct jet impingement onto the red-hot cutting tip at the exact moment of initial blade contact should be avoided to mitigate extreme thermal shock stresses.
- Stepped Blade Clearance Calibration: Maintaining optimal clearance according to billet dimensions and steel grades prevents upper and lower knife collision from excessively tight gaps, as well as billet tearing and distortion from overly wide gaps.
Large-Scale Non-Standard Heavy-Duty Shear Blade Customization
Equipped with heavy-duty milling, specialized heat treatment, and long-bed gantry grinding machines, Yuan Li Knife provides 1:1 high-precision replication or material upgrades based on OEM drawings for continuous casting and roughing lines.
Steelmaking and heavy metallurgical clients are welcome to provide machine models, operating temperatures, billet cross-sections, and engineering drawings. The Yuan Li technical team will deliver a comprehensive metallurgical evaluation and formal proposal.