Classifications

• • C—CHEMISTRY; METALLURGY
  • C21—METALLURGY OF IRON
  • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
  • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
  • C21D1/02—Hardening articles or materials formed by forging or rolling, with no further heating beyond that required for the formation
• • C—CHEMISTRY; METALLURGY
  • C21—METALLURGY OF IRON
  • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
  • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
  • C21D9/28—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for plain shafts

Definitions

• Forged components made of steel that are exposed to high mechanical stresses, such as B. axles for motor vehicles are usually made of tempered steels such as. B. CK 45, 42 CrMo 4 or 41 Cr 4, forged and then subjected to a tempering process in order to achieve the desired strength properties.
• the invention has for its object the manufacture of heavy-duty forgings made of steel, especially axle beams for motor vehicles, while maintaining their required strength properties and simplifying the overall effort.
• the forged part is forged from a steel with a carbon content between 0.05 and 0.25% and a manganese content between 1.0 and 2.0% and is further machined after hardening without subsequent tempering.
• the carbon and manganese content required to achieve the desired component properties depends to a certain extent on the cross section of the forged part.
• the desired component properties can be adapted to the respective requirements by appropriate selection of the carbon and manganese contents, higher carbon contents resulting in a higher hardness and higher manganese contents resulting in a higher core strength of the forged component.
• the method according to the invention also makes it possible to cast continuously as a steel, preferably a rolled continuous cast, i. H. So use a particularly economical steel.
• the method according to the invention is particularly advantageous for the production of more compact components, such as, for. B. axles of motor vehicles, because with such components, the usual material and energy requirements are high and the difficulties in handling are comparatively large. Such components are often drop-forged. In this case, the forgings must be manufactured using the one-piece process.

Landscapes

• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• Crystallography & Structural Chemistry (AREA)
• Mechanical Engineering (AREA)
• Materials Engineering (AREA)
• Metallurgy (AREA)
• Organic Chemistry (AREA)
• Forging (AREA)
• Heat Treatment Of Articles (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=6117031

Family Applications (1)

Country Status (2)

Cited By (5)

Citations (4)

• 1980
  • 1980-11-18 DE DE19803043439 patent/DE3043439A1/de not_active Ceased
• 1981
  • 1981-11-04 EP EP81109505A patent/EP0052308A1/fr not_active Withdrawn

Patent Citations (4)

Non-Patent Citations (2)

Also Published As

Similar Documents

Legal Events