Patent · US Expired

Quenching method

US6648997B2 · kind B2 · utility

2Cited by
3References
5Claims
0Family size

Assignee

Inventor

Key dates

Filing dateJul 20, 2001
Grant dateNov 18, 2003
Priority date—
Expiry dateJul 20, 2021

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC21D1/63
  • WIPO fieldMaterials, metallurgy
  • WIPO sectorChemistry

Abstract

Objects formed of engineering and tool steels are quenched from above 850° C. by immersion in an aqueous suspension of inorganic particles. The greater the proportion of particles, the slower the quench. The suspension may be saturated with carbon dioxide.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.