As underground mining operations extend to greater depths, the in‑mine working conditions in coal mine roadways have become increasingly complex. Soft‑rock roadways are becoming less common, while semi‑rock and fully rock roadways account for a growing share. Consequently, market demands for cutting picks are rising, with heightened requirements for alloy‑tip wear resistance, tip‑rock‑breaking resistance, the protective performance of the wear layer on the shank, shoulder‑level protection of the pick holder, high impact toughness of the shank, and fatigue resistance of the retaining spring, among other key performance indicators.

The Luoyang Jinlu cutting‑tooth R&D team, addressing the industry’s persistent challenges in underground mining operations, has developed corresponding mechanical models. Building on these models, they analyzed the factors influencing cutting forces and, for fully rock‑driven roadways with hard and ultra‑hard rock (f10 or higher), introduced the newly developed S200‑Z35E16 tunneling tooth—featuring a metal‑ceramic powder coating on both the head and shoulder. After extensive testing, this product has demonstrably enhanced the wear resistance of the cutter body, extending the service life of the cutting teeth by 20% to 35%, and has earned unanimous praise from customers.

The main advantages of the Jinlu tunneling pick S200-Z35E16 (head + shoulder) with metal-ceramic powder‑impregnated picks are:

1. Ultra‑wear‑resistant alloy cutting picks, crafted from Jinlu’s proprietary tungsten carbide alloy and processed using advanced vacuum sintering technology, achieve an optimal balance of hardness and toughness. Compared with mainstream market products, their wear resistance is improved by approximately 25%, effectively extending the service life of the picks, reducing replacement frequency, and delivering tangible cost savings for customers.

2. Featuring a fluid‑mechanics‑based rock‑breaking structure and an innovative tooth‑tip geometry, this design significantly optimizes stress distribution and chip‑removal efficiency during the cutting process. This unique configuration effectively reduces cutting resistance by approximately 20%, thereby not only increasing cutting speed but also lowering both the tunneling machine’s energy consumption and engine load.

3. Deep-hardened steel tooth bodies: The teeth are made from a special alloy steel and undergo a strengthening treatment, giving the entire component exceptionally high impact and bend resistance. This effectively prevents fracture and deformation under harsh operating conditions, ensuring construction safety.

Application Cases

In September 2026, product testing was conducted at a coal mine development team in Tangshan, Hebei. Compared with products of the same configuration, our company’s cutting pick demonstrated a 25% longer service life than that of Brand Z.

The test conditions were as follows: the mining team was operating in a full-rock roadway with a relatively high quartz content; a horizontal-axis roadheader was used, equipped with 154 cutting picks, achieving an advance rate of approximately 2–3 meters per day.

Remnant Comparison:

Summary: In this test, in terms of wear resistance and material consumption, Jinlu cutting picks outperformed those of Brand Z.

Choose Jinlu, and you’ll enjoy: more user-friendly products, more efficient production, and superior service!