Process for the manufacture of a scraper or brush wire
AssigneeRIWO-Drahtwerk GmbH
InventorJorg Karch
Life of this patent
Estimating the term…
Abstract
A process for the manufacture of a scraper or brush wire with increased wear resistance, in which a rolled steel wire with a carbon content of approximately 0.6 to 0.7% and a diameter of approximately 6 mm and smaller is brought to a final diameter by at least one drawing process, where the wire is patented prior to the drawing or in between successive drawing processes, and after the drawing is heat-treated, and where a steel wire alloyed with a chromium content of 0.3% or smaller is used.
Claims5
A process for the manufacture of a scraper or brush wire, comprising the steps of:
- bringing a rolled steel wire with a carbon content of approximately 0.6 to 0.7% and a diameter of approximately 6 mm or less to a final diameter by at least one drawing process;
- patenting the wire prior to each drawing process:
- heating the wire to its austenitizing temperature, thereby dissolving carbides within the wire;
- and
- dispersing the carbides by cooling the wire into its martensitic stage and subsequently reheating the wire to its bainite stage, whereby fine carbide precipitation is achieved within a matrix,
- wherein a steel alloyed with chromium is used for said steel wire, the chromium content of which is 0.3% or less.
A process for the manufacture of a scraper or brush wire, comprising the steps of:
- bringing a rolled steel wire with a carbon content of approximately 0.6 to 0.7% and a diameter of approximately 6 mm or less to a final diameter by at least one drawing process;
- patenting the wire prior to each drawing process;
- and
- precipitating carbides within the wire by dissolving the carbides within the wire by heating the wire to its austenitizing temperature and dispersing the carbides by cooling the wire into its martensitic stage and subsequently reheating the wire to its bainite stage,
- wherein a steel alloyed with chromium is used for said steel wire, the chromium content of which is 0.3% or less.
A process for the manufacture of a scraper or brush wire, comprising the steps of:
- bringing a rolled steel wire with a carbon content of approximately 0.6 to 0.7% and a diameter of approximately 6 mm or less to a final diameter by at least one drawing process;
- patenting the wire prior to each drawing process, whereafter the wire is a pearlitic/sorbitic structure;
- heating the wire to its austenitizing temperature, whereby carbides within the wire are dissolved;
- cooling the wire into its martensitic stage and subsequently reheating the wire to its bainite stage, whereby the carbides are dispersed and finely precipitate within the wire,
- wherein a steel alloyed with chromium is used for said steel wire, the chromium content of which is 0.3% or less.
A process for the manufacture of a scraper or brush wire, comprising the steps of:
- bringing a rolled steel wire with a carbon content of approximately 0.6 to 0.7% and a diameter of approximately 6 mm or less to a final diameter by at least one drawing process;
- patenting the wire prior to each drawing process, whereafter the wire is a pearlitic/sorbitic structure;
- and
- hardening and tempering the wire by:
- heating the wire to the austenitizing temperature;
- cooling the wire into its martensitic stage;
- and
- reheating the wire to achieve a fine carbide precipitation within the wire,
- wherein a steel alloyed with chromium is used for said steel wire, the chromium content of which is 0.3% or less.
Dependencies are inferred from the claim text.