Amidst the roar of mining and tunneling, there is a crucial weapon—the cutting tooth. Though small, it is the "sharp tooth" that directly interacts with hard rock strata, and its performance directly determines work efficiency and cost. Luoyang Jinlu understands this well; we firmly believe that superior performance stems from the utmost meticulous attention to every process. Today, let's step into Luoyang Jinlu's precision factory and uncover the journey of crafting a top-tier cutting tooth.
First stop: Selected premium materials, laying the foundation for excellence.
Superior products begin with top-quality raw materials. We reject ordinary steel and rigorously select high-quality alloy structural steel as the base material for our cutting teeth. Every batch of steel undergoes a spectral analysis to ensure its alloy composition is accurate, guaranteeing the product's inherent strength, toughness, and wear resistance from the source.
Second stop: Cold extrusion molding, reshaping the "strong and resilient core".
Say goodbye to traditional forging! We've revolutionized the core of our cutting tools with a revolutionary cold extrusion process! At room temperature, ultra-high pressure forces the metal to flow plastically, resulting in a continuous and intact fibrous structure. The forged cutting tools produced in this way are denser, with strength and toughness increasing by over 30%. They are oxidation-free, highly precise, and possess excellent impact resistance and wear resistance.
Third stop: Machining, shaping with precision.
After forging, the blank needs to be precision machined using high-precision CNC machine tools. We use CNC lathes and machining centers to turn, mill, and drill various parts of the gear body to ensure dimensional accuracy. Perfect geometry is the key to achieving seamless integration between the cutting tooth and the gear base, ensuring efficient force transmission and preventing abnormal wear and breakage caused by improper fit.
Fourth stop: Ultimate protection, fearless of harsh environments
We've given the cutting teeth a protective coating. By spraying a wear-resistant alloy coating onto the surface, a highly hard and corrosion-resistant protective film is formed on the tooth body. This film effectively resists the abrasion from coal gangue and silt, as well as the corrosion from mine water, ensuring that the cutting teeth maintain optimal operational condition throughout their entire lifespan.
Fifth stop: Heat treatment process, forging a heart that combines strength and flexibility.
This is the core step that gives the cutting teeth their soul. We use a fully automated heat treatment production line (including quenching and tempering).
• Quenching: Allows the tooth body to cool instantly, achieving extremely high hardness, as if it were covered with an indestructible "armor".
• Tempering: Precisely controlling temperature and time adjusts the internal metallographic structure, significantly improving toughness and eliminating brittleness while maintaining high hardness.
This perfect balance of "hardness" and "softness" allows the Golden Heron Cutting Tooth to be both sharp enough to break rocks and " strong yet not brittle, tough yet not bent" under violent impact.
Sixth stop: Welding and fusion, creating an indestructible body.
The key to our technology lies in firmly bonding the top-grade carbide cutting tip to the tooth body. We employ a high-frequency induction brazing process and use special brazing filler metal. Through precise temperature control, the solder melts and penetrates evenly, achieving a weld fill ratio of over 90 % between the carbide tip and the tooth body. Cutting teeth processed using this method will never easily detach from the carbide tip during operation.
Seventh step: Applying oil to prevent rust and protect the initial sharpness.
Finally, we evenly coat each cutting tooth that leaves the factory with a high-efficiency anti-rust oil film. This "invisible armor" effectively isolates air and moisture, preventing rust from penetrating during transportation and storage, ensuring that the cutting tooth remains as sharp as new and 100% operational the moment it is put into use.
As a global supplier of Roadheader Picks, Luoyang Golden Egret Geotools co., Ltd. continues to invest in research and development and is committed to providing customers with high-reliability, low-energy consumption products. Besides that, we can also privide the Rock Drilling Tools, Coal Mining Tools, Construction Tools, Wear and Crushing Tools and Rotary Drilling Tools for the customers around the world.