Classification of gears
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Author:hkw5e73ee
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Published time: 2019-11-07
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According to tooth surface hardness is divided into two categories:HB 350, known as the hard tooth surface1.Tooth surface hardn....
According to tooth surface hardness is divided into two categories:
HB <350, called soft tooth surface
HB> 350, known as the hard tooth surface
1.Tooth surface hardness HB <350
Process: forging rough → normalizing - roughing → quenching and tempering, finishing
Commonly used materials; 45 #, 35SiMn, 40Cr, 40CrNi, 40MnB
Features:
Has a good overall performance, tooth surface with high strength and hardness, tooth core has a better toughness.
Heat treatment after cutting precision up to 8.
Manufacturing simple, economical, high productivity, the accuracy is not high.
2. Tooth surface hardness HB> 350
When using medium carbon steel:
Process:
forging rough → normal → rough cut → quenching and tempering → fine cut
→ high, intermediate frequency quenching → low temperature tempering →
honing or abrasive running together, spark sparks.
Common materials: 45,40Cr, 40CrNi.
Features:
Tooth surface hardness HRC = 48-55, high contact strength, good wear resistance.
This article is organized by Taizhou kaifeijie auto parts co., Ltd.