How To Choose The Material for The Jaw Plate of A Copper Ore Crusher under Different Working Conditions?

This problem is highly targeted and directly solves the core pain point of jaw plate selection! The core conclusion of the material selection for the jaw plate of the copper ore crusher is to prioritize high manganese steel, high chromium composite material, or wear-resistant alloy steel based on the core working condition indicators of "ore hardness+abrasion resistance+operating strength", balancing toughness and wear resistance.

Core selection logic

The core force of the jaw plate is "compression+slight impact", and the material needs to consider both deformation resistance (toughness) and wear resistance (hardness).

The more demanding the working conditions are (the harder the ore, the stronger the abrasion, and the more continuous the operation), the more it is necessary to strengthen the wear resistance performance.

Avoid "excessive hardness" or "insufficient toughness": excessive hardness is prone to fracture, while excessive toughness is prone to wear.

Material selection under different working conditions

Condition 1: Medium hard copper ore (hardness level 6-7, low abrasion, intermittent operation)

Recommended Material: High Manganese Steel (ZGMn13)

Key advantages: extremely strong toughness, able to withstand compression deformation and slight impact, with the highest cost-effectiveness.

Applicable scenarios: Copper sulfide ore, low silicon oxide copper ore, small and medium-sized jaw crusher, operating for less than 8 hours per day.

Condition 2: High hardness copper ore (hardness level 7-8, high abrasion resistance, continuous operation)

Recommended material: High chromium cast iron+high manganese steel composite material

Key advantages: The surface layer of high chromium (HRC60+) enhances wear resistance, while the inner layer of high manganese steel ensures toughness, with a lifespan 2-3 times that of pure high manganese steel.

Applicable scenarios: containing siliceous copper ore, high hardness oxidized copper ore, large jaw crusher, operating for more than 12 hours per day.

Condition 3: High wet material/mud content (ore moisture>15%, prone to scaling)

Recommended material: Surface treated high manganese steel (plasma sprayed wear-resistant layer) or polyurethane composite jaw plate

Key advantages: Anti adhesion, less prone to scaling, while retaining core toughness, reducing blockage and wear.

Applicable scenarios: open-pit mining of copper ore (working on rainy days) and clay containing oxidized copper ore.

Condition 4: High intensity impact condition (large ore feed and high impact load)

Recommended material: Wear resistant alloy steel (NM450/NM500)

Key advantages: High yield strength (≥ 450MPa), balance impact resistance and wear resistance, and are not easily broken.

Applicable scenarios: coarse crushing process, large feed particle size (>300mm), frequent processing of large copper ores.

Additional selection points

Cost ranking: High manganese steel<Wear resistant alloy steel<High chromium composite material, can be flexibly adjusted according to maintenance budget.

Service life: High chromium composite material>Wear resistant alloy steel>High manganese steel>Ordinary carbon steel.

Special requirements: If you pursue the ultimate lifespan, you can choose hard alloy embedded jaw plates (suitable for ultra-high abrasion conditions, but with higher costs).