US 7,040,080 B2 · Track link production method and track link produced by the same

Abstract

There are proposed a track link production method capable of providing markedly improved wear life with good cost performance and a track link produced by this method. To this end, the track link production method includes a heat treatment process (Steps 4, 5) of applying quenching and low temperature tempering treatment to a whole link material after hot forging (Step 2), and is designed such that desired machining is applied to the link material (Step 3) before the heat treatment process (Steps 4, 5) and such that after the heat treatment process (Steps 4, 5), tempering (Step 6) and finish machining (Step 7) are sequentially applied to some of the parts which have undergone the machining process, the some parts including at least parts where high dimensional accuracy is required.

Claims4

Dependent claims

A method for producing a track link, said method comprising:

hot forging a link material;
machining the link material;
then applying a heat treatment process to an entirety of the link material, said heat treatment process comprising quenching and low temperature tempering the entirety of the link material;
then tempering parts of the link material which at least one of:
(i) require high dimensional accuracy, and (ii) are susceptible to delayed failure caused by high stress due to press-fitting;
and
finish machining said parts of the link material.

4 more elements

Dependencies are inferred from the claim text.

Track link production method and track link produced by the same

Life of this patent

Track link production method and track link produced by the same

Life of this patent

Abstract

Claims4