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US 12,605,782 B2Granted
Tool and manufacturing method of it
AssigneeSeco Tools AB
InventorStefan Larsson-Fritz
Life of this patent
Estimating the term…
Abstract
A tool includes a cemented carbide part and a steel part joined by brazing, where the steel part has an average hardness of between 390 and 510 HV30. The braze joint includes Ti and a TiC layer, with a thickness of between 0.03 and 5 μm, adjoining to the cemented carbide part. The tool provides a strong braze joint and a steel part that have an even hardness.
Claims14
A tool comprising:
- a cemented carbide part;
- a steel part having a composition of from 0.63 to 0.70 wt % C, from 1.40 to 1.60 wt % Si, from 1.35 to 1.55 wt % Mn, from 1.00 to 1.20 wt % Cr, from 0.23 to 0.27 wt % Mo, less than 0.25 wt % Ni, less than 0.025 wt % P, less than 0.0015 wt % S, and the balance Fe, and an average hardness of between 390 and 510 HV30 with a standard deviation between 0 and 30 HV30;
- and
- a braze joint joining the cemented carbide part and the steel part, wherein the braze joint includes Ti, and wherein the braze joint includes a TiC layer, with a thickness of between 0.03 and 5 μm, adjoining the cemented carbide part.
1 more element
Dependencies are inferred from the claim text.