Km Europa Metal Ag

Ralf Rethmann

Dirk Rode

Hans-J&uuml;rgen Hemschemeier

Frank Maiwald

Ju Rgen Merker

Gerhard Hugenschuett

Hark Schulze

Hans-Juergen Hemschemeier

Hans-Guenter Wobker

A copper casting mold for the continuous casting of steel melts is provided, in the presence of zinc and or sulfur in the thermally most greatly stressed contact region with the steel melt, with an at least single-layer diffusion barrier layer made of at least one metallic/metalloid material.

Copper casting mold

A casting-die body ( ) made of a hardenable copper alloy is provided with an inner wear-protective layer ( ) of chromium whose hardness decreases from the billet-side surface ( ) in the direction of the casting-die body ( ). The wear-protective layer ( ) is made up of two chromium layers ( ). For this purpose, the casting-die body ( ) is given a solution heat treatment, is chromium plated, and is then hardened, as a result of which the initially very great hardness of the chromium layer ( ) is reduced. The hardness of the chromium layer ( ) then is about 650 HV. Subsequently, to increase the wear protection, the second chromium layer ( ) is applied. The result is a conventional chromium-plated layer having a hardness of between 850 HV and 1050 HV.

Casting-die body

A casting-die body (,) made of a hardenable copper alloy is provided with an inner wear-protective layer (,) of chromium whose hardness decreases from the billet-side surface (,) in the direction of the casting-die body (,). The wear-protective layer (,) is made up of two chromium layers (,). For this purpose, the casting-die body (,) is given a solution heat treatment, is chromium plated, and is then hardened, as a result of which the initially very great hardness of the chromium layer (,) is reduced. The hardness of the chromium layer (,) then is about 650 HV. Subsequently, to increase the wear protection, the second chromium layer (,) is applied. The result is a conventional chromium-plated layer having a hardness of between 850 HV and 1050 HV.

Method for manufacturing a casting-die body and a casting-die body

Growing community of inventors

Osnabrueck, Germany

Ralf Rethmann