01 Introduction to Wear-Resistant Crushing Products

Main products include:

（1）Coal crusher roller skins

（2）Crushing teeth/picks

（3）TBM wear-resistant parts

（4）Wear-resistant plates

（5）Non-standard custom welded parts

（6）Overlay welding processing for customer-supplied materials

02 Applications of Wear-Resistant Crushing Products

2.1 Coal Crusher Roller Skins

Used for tertiary crushing in coal mines, combining wear resistance and impact toughness. Designed as welded structures with medium carbon steel base, overlay welded surface, and brazed carbide, offering 2–3 times longer service life than traditional cast roller skins.

2.2 Coal Crushing Teeth

Supplying primary, secondary, and tertiary crushing teeth and comb picks, using carbide brazing + overlay protection, with 5–6 times longer life than traditional cast steel teeth.

2.2 Primary crushing teeth: Integral types

Product use: Used for mining crushers, primary crushing of materials;

Product advantage: A wear-resistant layer is deposited on the top of the product to protect the substrate.

2.2 Primary crushing teeth: split types

Product use: Used for mining crushers, primary crushing of materials;

Product advantage: The tooth head and substrate are separated, and the head that wears out quickly can be replaced, saving on usage costs.

2.2 Comb picks: Used with secondary/tertiary teeth to remove adhered materials

The crushing comb teeth are used in conjunction with the secondary and tertiary crushing teeth, installed at the edge of the crushing drum, to scrape off the material adhered to the crushing teeth. Our crushing comb teeth are protected by WC hard alloy slotted brazing and welding layer, and the product life is 5-6 times longer than traditional cast steel comb teeth.

2.3 TBM Wear-Resistant Parts – Disc Cutters

Disc cutters are primarily used in composite cutterheads and hard rock cutterheads of tunnel boring machines (TBMs), mainly for full-face rock strata or composite ground tunneling. Currently, HYW produces face disc cutters, center disc cutters, and other types suitable for various machine models, with sizes ranging from 6.5 to 20 inches. These include steel cutter rings, embedded-tooth cutter rings, and alloy-block cutter rings designed for diverse working conditions.

2.3 TBM Wear-Resistant Parts – Scraper Cutters, Ripper Picks, Gauge Cutters

Scraper cutters, ripper picks, and gauge cutters are primarily designed to withstand the axial shear forces and radial cutting forces generated during the forward propulsion of a tunnel boring machine (TBM). HYW continuously optimizes designs and provides tailored selections based on specific construction conditions, ensuring customers are equipped with the most suitable construction tools.

2.4 Wear Blocks-Brazed wear plates

Brazed wear plates are produced by brazing alloy blocks or alloy rods onto an alloy steel substrate, thereby achieving higher wear resistance and excellent weldability. They are currently widely used in shearer shoes, cutterheads, drums, and bit holders.

2.4 Wear Blocks - Brazed Type

Bit holder wear plates are used on the exterior of shearer drum bit holders to prevent rapid wear and extend the service life of the holders.

2.4 Wear Blocks - Cast-in Carbide Particle Type

The substrate is produced through casting, with a final hardness of HRC 45-52 after heat treatment. Crushed alloy particles are irregularly distributed in the surface layer of the substrate via a casting process, with a fusion depth of 5-10 mm. The hardness of the crushed alloy particles reaches HRA 85.

2.5 Non-Standard Custom Parts - Agricultural Straw Crushing Teeth

Agricultural straw crushing teeth are used to crush straw and other agricultural residues. Our company employs a brazing process to weld hard alloy onto an alloy steel substrate, while also applying overlay welding on the back, thereby achieving crushing teeth with higher wear resistance.

2.5 Non-Standard Custom Parts - Coal Mine Bolt Clamps

Coal mine bolt clamps are manufactured using a brazing process to weld hard alloy rods onto an alloy steel substrate, thereby producing bolt clamps with the required non-standard dimensions.

2.5 Non-Standard Custom Parts - Pipe Jacking Machine Edge Protection Wear Blocks

The edge protection wear blocks for pipe jacking machines are manufactured by brazing hard alloy strips onto an alloy steel substrate. The entire assembly is then secured to the edge of the pipe jacking machine via bolted connections, thereby extending the machine's service life.

2.5 Non-Standard Custom Parts - Welded Peeling Knives

Welded peeling knives are manufactured by brazing specially shaped hard alloy blades onto an alloy steel substrate using a silver-based brazing process. These products are secured to peeling machines via threaded connections and serve as critical wear-resistant and cutting components.

2.5 Non-Standard Custom Parts - Wear-Resistant Pins

Wear-resistant pins refer to hard alloy teeth brazed onto alloy steel. These pins are welded onto the surface of required equipment using welding equipment.

2.6 Overlay Welding Services for Customer-Supplied Materials

HYW accepts external materials for overlay welding processing. We provide the overlay welding equipment and wear-resistant welding materials, and weld overlay layers to specified thickness and hardness according to customer's process requirements.

2.7 Overlay Welded Wear Plates

Overlay welded wear plates are manufactured by depositing one or multiple layers of wear-resistant alloy containing a high volume of chromium carbide hard particles, along with special additive elements that form functionally specific carbides, onto low/medium carbon steel substrates (such as Q235, Q345, etc.). The wear resistance of these overlay welded plates is 20 times that of mild steel and 8 times that of heat-treated wear-resistant steel. The maximum plate length is 3500 mm, with a width of 1500 mm. Available thickness specifications include 5+5, 6+6, 8+6, 8+8, 10+6, 10+10, 12+12, 30+10, etc., and custom thicknesses can be provided.

2.7 Overlay Welded Wear Plates：Drum spiral blades are manufactured using 10+10 and 12+12 wear-resistant plates

2.7 Overlay Welded Wear Plates：Conveying pipelines

2.7 Overlay Welded Wear Plates：Bulldozer bucket