Hyundai Motor Company

Kia Motors Corporation

Kia Corporation

Sejong University

Chang-Yeol Yoo

Ye-Lim Kim

Hyung-Sop Yoon

Jae-Sung Heo

Byung-Seok Kong

Hoo-Dam Lee

Jong-Kook Lee

Yeon-Beom Jeong

Gyeong-Wan Jo

Ki-Buem Kim

Sung-Ho Yoon

A method of drawing an axial tube made of an aluminum (Al) material for a cowl cross bar includes performing NaOH etching on an extruded pipe having a single diameter and made of an Al alloy and performing high frequency heat treatment on the extruded pipe to increase a tube reduction ratio of the extruded pipe. The cowl cross bar is manufactured having a large diameter section and a small diameter section have a difference in diameter, due to a tube reduction ratio, of 40% by a diameter reduction section. Therefore, even when an Al alloy is manufactured as the axial tube having different diameters, the occurrence of cracks is prevented.

Method of drawing an axial tube made of aluminum material and a cowl cross bar manufactured using same

A method for manufacturing an aluminum alloy sheet may include melting aluminum alloy composition containing silicon (Si), iron (Fe), copper (Cu) and manganese (Mn) in weight % on the basis of remainder of aluminum (Al) to make cast alloy having a constant initial thickness; rolling the cast alloy to allow the initial thickness to be reduced, whereby the cast alloy is elongated to aluminum alloy sheet; and performing heat treatment on the aluminum alloy sheet.

Method for manufacturing real aluminum using aluminum alloy capable of being applied to coil-to-uncoil process, and vehicle interior part

A vehicle interior material made of a rose-gold-colored copper alloy may include 0.07 to 0.21 wt % of aluminum (Al), 0.06 to 0.19 wt % of magnesium (Mg), 0.17 to 0.52 wt % of zinc (Zn), and a balance of copper (Cu) and unavoidable impurities, wherein the sum of the aluminum (Al), the magnesium (Mg), and the zinc (Zn) is 0.5 to 1.5 at %.

Rose-gold-colored copper alloy and vehicle interior material using the same

The present invention relates to a clear composition for the aluminum foot rest containing a melamine resin, an acrylic resin, an ultraviolet (UV) curing agent, a solvent, and titanium oxide (TiO) powder in a content of 10 to 20% based on a total weight. Provided is the clear composition for the aluminum foot rest having an increased hardness, transparency and enhanced adhesion to the aluminum material.

Clear composition for alumium foot rest and coating method for aluminium foot rest

A surface treatment method for an aluminum exterior part of a vehicle includes: pre-treating the aluminum exterior part comprising aluminum or an aluminum alloy; etching a surface of the pre-treated aluminum exterior part by immersing the pre-treated aluminum exterior part in an etching solution; forming an oxide layer on the surface of the aluminum exterior part by immersing the aluminum exterior part, which is subjected to the etching, in a hydrothermal synthetic solution; and forming an electrodeposition coating layer on the surface of the aluminum exterior part, which is subjected to the forming the oxide layer.

Surface treatment method for aluminum exterior part of vehicle

Disclosed is a method of fabricating an aluminum alloy member for bonding different materials. The method may include etching the aluminum alloy member with one or more etching solutions, and forming one or more undercuts on a surface of the aluminum alloy member.

Growing community of inventors

Gyeonggi-do, South Korea

Chang-Yeol Yoo