公开(公告)号：US20220099126A1

公开(公告)日：2022-03-31

申请号：US17423582

申请日：2019-12-16

Applicant: Hilti Aktiengesellschaft

Inventor： Alexander TOMANDL

IPC: F16B13/12 ,  F16B13/06 ,  C23C28/02 ,  C23C2/26 ,  C23C2/06

Abstract: An expansion anchor includes an anchor bolt, an expansion sleeve as a first element where the expansion sleeve surrounds the anchor bolt, a wedge body for expanding the expansion sleeve as a second element where the wedge body is disposed on the anchor bolt, and a double coating disposed on one of the first and second elements at least in an area of contact with the other of the first and second elements. The one of the first and second elements on which the double coating is disposed is carbon steel. The double coating has a zinc flake and/or an aluminum flake top layer and a hot dip galvanized zinc, a ZnNi, or a ZnFe base layer that is covered by the zinc flake and/or the aluminum flake top layer.

公开(公告)号：US20240318291A1

公开(公告)日：2024-09-26

申请号：US18270011

申请日：2021-11-17

Applicant: HILTI AKTIENGESELLSCHAFT

Inventor： Roland SCHNEIDER ,  Alexander TOMANDL ,  Juergen ROHR

IPC: C23C2/28 ,  C23C2/06 ,  C23C2/14 ,  C23C2/34 ,  F16B25/00

CPC classification number: C23C2/28 ,  C23C2/06 ,  C23C2/14 ,  C23C2/34 ,  F16B25/0026

Abstract: A method for processing a screw body, including a screw body providing step in which a screw body made of a hardenable steel is provided, a primary coating step, in which the screw body is coated with a primary coating that includes zinc, wherein the primary coating step follows the screw body providing step, and a tip hardening step, in which a tip region of the screw body, which is coated with the primary coating, is selectively heated, at least in part and with the ad-mission of oxygen, to a temperature required for hardening, characterized in that the tip hardening step follows the primary coating step. A screw that can be obtained using this method is also provided.

公开(公告)号：US20200063231A1

公开(公告)日：2020-02-27

申请号：US16609872

申请日：2018-06-20

Applicant: HILTI AKTIENGESELLSCHAFT

Inventor： Roland SCHNEIDER ,  Michael BISCHOF ,  Alexander TOMANDL

IPC: C21D9/00 ,  C23C8/32 ,  C21D6/04 ,  C21D1/06 ,  C21D8/02 ,  C22C38/04 ,  C22C38/44

Abstract: A steel comprising 0.07 to 0.14 wt. % of carbon, 13 to 15 wt. % of chromium, 1.3 to 1.7 wt. % of molybdenum, 1.5 to 2.0 wt. % of nickel and 1.0 to 1.5 wt. % of manganese and use of the steel for producing screws is provided.