The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 06, 2024
Filed:
Jan. 30, 2023
GM Global Technology Operations Llc, Detroit, MI (US);
Zhe Li, Rochester, MI (US);
Qigui Wang, Rochester Hills, MI (US);
Wenying Yang, Rochester Hills, MI (US);
Daniel J. Wilson, Linden, MI (US);
Huaxin Li, Rochester Hills, MI (US);
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);
Abstract
A method of making a die cast part having high wear resistance is provided. The method comprises providing a mold and an insert pin. The mold comprises an interior surface defining a cavity. The mold comprises a bore formed through the interior surface. The insert pin has a magnetic core having a magnetic field and a barrier disposed about the magnetic core. The insert pin is disposed in the bore and extends into the cavity. The method comprises filling the mold with metallic material such that the metallic material is in contact with the insert pin to define a contact layer. The method comprises modifying iron content within the contact layer with the magnetic field to define an outer layer and an inner layer formed between the outer layer and the insert pin. The inner layer has 3-5 wt % Fe and the outer layer has 0.01-0.5 wt % Fe.