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Home / Products / Forging / Ring Forging / Mining Machinery / Connecting ring
Connecting ring

Connecting ring

For mining excavators (such as 400-ton-class electric shovels), the dipper must drive the bucket to excavate hard rock or slag. The connection between the dipper, boom, and bucket relies on large forged rings (with diameters reaching 1-2 meters), which must withstand bending moments and tensile forces during excavation (for electric shovels with 50m³ bucket capacity, single digging forces can reach hundreds of tons).

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Performance Requirements
Item Specification / Requirement
Material Q690D high-strength low-alloy steel
Forming Process Forging
Post-Forging Process Controlled cooling
Mechanical Properties Yield strength ≥ 690 MPa
Low-temperature impact energy (-40°C) ≥ 34 J
Application Open-pit mining operations in winter conditions
Key Performance Prevention of brittle fractures
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