Cutting Picks

Cutting pick is a kind of part mounted on the mining and excavation machine. It is mainly suitable for shearers, road-headers, milling machines and other equipment.

• Application scenarios: road milling, open pit mining, ground leveling, milling machines, rotary drilling rigs, trenching machines, horizontal drilling rigs, mining.

Composition

• Pick head: It is usually made of tungsten carbide, which undertakes the functions of rotary digging and chiseling.
• Pick seat: It is used to fix the pick head and play the role of supporting and fastening.
• Pick shank: Connect the pick base on the output end of the equipment to fix the pick.
• Wear-resistant coating: To solve the problem of rapid wear and failure of the pick during coal mining, an annular belt with a width of about 20~30mm and a thickness of 2~3mm is overlaid in the circumferential direction below the pick head by overlay welding. This ring-shaped belt is called the surfacing anti-abrasion coatings.

Main indexes: weld strength, impact toughness, hardness of steel working section, wear coefficient of the wear-resistant coating, hardness of wear-resistant coating.

Features:

• Using high-quality raw materials, they have undergone strict quality control and testing to ensure the quality and reliability of cutting picks.
• It has excellent cutting performance and high working efficiency.
• Provide a variety of models and specifications to meet the needs and application scenarios of different customers.

1. Carbide Tips

Button Tips: Carbide button tips are commonly used in shearer, road-header, milling machine (cement road).

Mushroom Tips: Carbide mushroom tips are commonly used in shearer and road-header.

Flat-buttom Tips: Carbide flat-buttom tips are commonly used as planer tips (asphalt road).

2. Conical Pick Tools

Uses: It is used together with the coal shearer and is suitable for coal mining.

Classification: Picks with step shank and picks without step shank

Advantage:

• The wear-resistant surfacing layer technology is adopted, so the overall quality of the pick is better, the wear resistance is better, and the strength is greater. When in use, the impact resistance increases significantly. During construction work, even when encountering hard coal blocks, they can be cut quickly and the cutting quality is very good.
• The wear resistance is excellent, and because of this feature, this pick is widely used in the coal mining industry.
• Maintenance is very convenient. During use, it is usually necessary to maintain the pick. The staff only need to apply some engine oil when performing maintenance, which is very convenient.

3. Crusher Pick Tools

Uses: It is used together with the roadheader and is suitable for roadway excavation.

Classification: Picks with step shank and picks without step shank

Advantage:

• Good flexibility.
• Durable.
• Highly wear-resistant.
• Easy to replace.

Characteristics of commonly used alloys for cutting picks

The main function of the alloy is to break the rock, protect the steel, and reduce the wear of the cuttings on the steel.

Carbide button tips

Tooth profile	Advantages	Disadvantages
Sharp tips outcrop	1. It is suitable for partial soft geology. 2. Shape is sharper and smoother, and is more conducive to breaking rocks.	The product strength is low, and it is easy to collapse or break under severe working conditions. The applicable working condition of the product is narrow.
Full tips outcrop	1. It is suitable for hard geology. 2. The full alloy is more resistant to impact and less likely to break. It is suitable for a wide range of working conditions.	The alloy cost of general hard geological products is relatively high, and the rock-breaking resistance increases.
Shallow buried depth	1. It is suitable for soft geology. 2. Weak impact has lower requirements for welding. 3. Shallow buried depth can reduce costs and improve cost performance.	The weld area is small, and the tips is easier to fall off. The applicable working condition of the product is narrow.

Carbide mushroom tips

Tooth profile	Advantages	Disadvantages
Deep buried depth	1. It is suitable for hard geology. 2. The alloy welding area is large, not easy to fall off, and the product is stable.	The buried depth is large, and the alloy cost is high.
Bottom Waist Alloy	1. It is suitable for soft ground. 2. The impact of the working condition is weak, and the narrowing of the alloy bottom can reduce the cost. 3. The thickness of the mouthguard steel is increased to reduce the risk of alloy shedding.	The product strength is low, and it is easy to collapse or break under severe working conditions. The applicable working condition of the product is narrow.
Bottom column alloy	1. It is suitable for hard geology. 2. The thick alloy is more resistant to impact and less likely to break.	Generally, the alloy cost of hard geological products is high, the steel of the tooth guard becomes thinner, and the alloy is easy to fall off during partial wear.

Advantages and disadvantages of pick body

Overall shape design form	Advantages	Disadvantages
Smooth shape	1. It is suitable for soft geology. 2. The design has a sharper and smoother shape. 3. The coal pick has high rock-breaking efficiency, reduces cutting resistance, increases lump coal rate, and efficiently mines coal.	The product strength is low and is prone to accidental failure in case of severe working conditions.
Rough shape	1. It is suitable for hard geology. 2. The thicker alloy and thicker skirt body can resist the impact of higher-strength coal and rock, and can also increase the product service life accordingly.	The product has high cutting resistance, high cutting dust, and low lump coal rate.