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A Novel Heat Treatment for Excavator Dipper Teeth Manufactured from Low‐Carbon Low‐Alloy Steel
Author(s) -
Zhao MingChun,
Li JingLi,
Zhao YingChao,
Huang XiaoFang,
Li JinZhu,
Atrens Andrej
Publication year - 2013
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.201200103
Subject(s) - materials science , metallurgy , microstructure , alloy , annealing (glass) , dipper , forging , hardening (computing) , composite material , medicine , layer (electronics) , ambulatory blood pressure , blood pressure , radiology
This research examined the metallurgy of production of forged excavator teeth manufactured from low‐carbon low alloy steel. A novel partial forging‐remnant‐heat hardening technology was proposed. The critical temperature of isothermal annealing for 40 Cr steel was determined experimentally to be 650°C. Production dipper teeth were produced using this novel technology. Their properties were compared with dipper teeth produced by the alternative routes. The novel technology provided optimum microstructure, good mechanical properties, and a lower economical cost, congruent with the low carbon economy.