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Large gear
China Qianchui Mechanical Company, using military technology, produces large gears Special steel: using our own developed special alloy steel for large gears, such as 18CrNiMo7-6, and other grades Produced sizes: dia...
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The Chinese company Qianchui Mechanical, using military technology, produces large gears
Special steel: using our own developed special alloy steel for large gears, such as 18CrNiMo7-6, and other grades
Produced sizes: diameter Φ50～Φ360mm × length ≤5000mm
Technological process: EAF+CP+VD vacuum refining of 8～12-ton large ingots + forging of the billet on a 4500 ton press + forging of a circle on a 1,800 ton forging press + post-forging normalization + pre-heat treatment by tempering + standard case hardening + multiple low tempering + surface shot blasting + inspection and delivery to warehouse
The deformation ratio of special steel is >8:1, the grain size is ≥8 points, and ultrasonic testing fully complies with the requirements.
Strength indicators: surface hardness HRC58～61, core hardness HRC36～42
Impact strength indicators: AKU ≥108 J, fully meet the requirements for the characteristics of large gears: high surface strength, high wear resistance, high core toughness, “hard outside, soft inside.”
To buy a good piston, only accept Qianchui.
Qianchui pistons are military quality.
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