Products Description

In coal mining operations, shearer picks serve as core wear components that directly influence mining efficiency, energy consumption, and operational safety. This series have earned widespread global recognition for their standardized structure, superior wear resistance, and strong adaptability.

Basic Characteristics & Manufacturing Standards

Fundamentally, the U80 Series belongs to conical picks-a mainstream type of mining cutting tool characterized by a slender body and standard shank. Its scientifically optimized conical design minimizes energy loss during the cutting process: the conical tip can easily penetrate the coal matrix, reducing cutting resistance and accelerating coal fragmentation.

Additionally, the series incorporates advanced self-rotation technology, which ensures uniform wear on both the tip and body, preventing localized excessive wear and significantly extending service life.

For the pick body, high-quality 42CrMo alloy steel is strictly selected and subjected to precision forging, quenching, and tempering processes, achieving a hardness of 40-44 HRC and an impact toughness of no less than 49 J/cm², fully complying with the mechanical property requirements of the coal mining industry.

Core Models & Customization Options

The U80 Series encompasses a comprehensive range of models to accommodate diverse coal seam conditions and equipment configurations. Core models include the U82, U84, and U85, each of which can be customized into multiple specifications (e.g., different alloy tip grades, shank lengths) based on specific customer requirements. While sharing the same core design philosophy, these models feature slight variations in structural dimensions and performance parameters to match various operational scenarios.

The U82 is the basic model in the series, offering a balanced combination of toughness and wear resistance. It is primarily suitable for soft coal seams (such as lignite) and is widely utilized in small-scale coal mines with simple geological conditions.

The U84 is optimized for medium-soft coal seams containing small gangue particles; its specially formulated alloy tip enhances impact resistance while maintaining excellent wear resistance, effectively reducing tip chipping caused by gangue impact.

The U85 is designed for abrasive medium-hard coal seams, equipped with a thicker tungsten carbide tip and a laser-cladded wear-resistant layer on the body. This enables it to withstand high-temperature friction (up to 600-800℃) and high shear stress during cutting, significantly lowering wear-related failure rates. Manufacturers also provide custom specifications, including anti-rust treatments or shank structure adjustments to match specific shearer drum interfaces.

Application Scenarios

The U80 Series is primarily applied in coal mining scenarios equipped with medium and small-power shearers, covering underground mines, open-pit mines, and continuous mining operations. Its application scope is focused on medium and small-scale projects with complex, variable working conditions but relatively low power requirements-aligning perfectly with its performance characteristics.
In underground mines, the U80 Series is particularly well-suited for thin and medium-thick coal seams where large-power shearers are impractical to deploy. Its compact, lightweight design facilitates easy installation on small shearer drums, ensuring flexible maneuverability in narrow mining spaces.
In open-pit mines, it is often used for auxiliary operations (e.g., coal seam pretreatment, edge trimming), where its high efficiency and easy maintenance minimize downtime caused by pick replacement. In continuous mining operations, the series exhibits exceptional stability: uniform wear ensures consistent cutting performance, avoiding uneven coal breaking due to individual pick failure and thus maintaining uninterrupted mining operations.

Practical Application Case

A practical application case in a coal mine located in Guangxi, China, fully validates the reliability of the U80 Series. This mine, which primarily extracts medium-soft coal seams with scattered gangue, previously encountered frequent pick wear and replacement issues, resulting in low mining efficiency and high operational costs. After switching to U80 Series picks (mainly the U84 and U85 models), pick consumption per unit output decreased by 30%, mining efficiency increased by 15%, and downtime due to pick replacement was nearly halved-significantly reducing the mine's overall operational costs. This case fully demonstrates the series' strong adaptability to complex coal seam conditions and its considerable economic benefits for medium and small-scale mines.