Hyundai Steel Company

Tangjin, South Korea

Hyundai Steel Company

Tangjin, South Korea

Time filter

Source Type

The present invention discloses pulverized coal for iron making comprising cow manure and a method for producing pig iron using the same. The present invention has the advantage of making it possible to improve the combustion properties of pulverized coal and to increase the efficiency and safety of a blast-furnace operation.


Patent
Hyundai Motor Company and Hyundai Steel Company | Date: 2017-06-07

A steel composition is provided and includes carbon of about 0.5 to 0.7 wt%; silicon of about 1.3 to 2.3 wt%; manganese of about 0.6 to 1.2 %; chromium of about 0.6 to 1.2 wt%; molybdenum of about 0.1 to 0.5 wt%; nickel of about 0.05 to 0.8 wt%; vanadium of about 0.05 to 0.5 wt%; niobium of about 0.05 to 0.5 wt%; titanium of about 0.05 to 0.3 wt%; cobalt of about 0.01 to 3 wt%; zirconium of about 0.001 to 0.2 wt%; yttrium of about 0.01 to 1.5 wt%; copper of about 0.3 % or less but greater than 0 wt%; aluminum of about 0.3 % or less but greater than 0 wt%; nitrogen of about 0.03 % or less but greater than 0 wt%; oxygen of about 0.003 % or less but greater than 0 wt%. Additionally, a balance iron, based on the total weight is included.


Patent
Hyundai Motor Company and Hyundai Steel Company | Date: 2016-06-06

Disclosed is a method and apparatus for forming a coating layer using a physical vapor deposition apparatus equipped with a sputtering apparatus and an arc ion plating apparatus, comprising: a first coating step of forming a Mo coating layer on a base material using a the sputtering apparatus and a Mo target and Ar gas; a nitrating step of forming a nitride film forming condition using an arc ion plating apparatus and Ar gas and N_(2 )gas; a second coating step of forming a nano composite coating layer of CrMoN using the Mo target and Ar gas of the sputtering apparatus and the Ar gas, N_(2 )gas and a Cr source of the arc ion plating apparatus at the same time; and a multi-coating step of forming a multi-layer having alternating CrMoN nano composite coating layers and Mo coating layers by revolving the base material around a central pivot.


Patent
Hyundai Steel Company | Date: 2016-02-03

Disclosed herein are a steel sheet having excellent aging resistance and low yield ratio properties, and a method for producing the same. The disclosed sheet comprises, by weight, 0.005-0.06% carbon (C), 0.2% or less silicon (Si), 1.0-2.0% manganese (Mn), 0.08% or less phosphorus (P), 0.01% or less sulfur (S), 0.2-2.0% aluminum (Al), one or more of chromium (Cr) and molybdenum (Mo) in an amount satisfying 0.3 [Cr wt%]+0.3[Mo wt%] 2.0, and 0.008% or less nitrogen (N), with the remainder being iron (Fe) and inevitable impurities, and has a single-phase structure of ferrite in a hot-rolled state, and a two-phase structure of ferrite and martensite in a cold-rolled state.


Disclosed are a hot stamping part with enhanced toughness and a method for manufacturing the same, in which the hot stamping part has a tensile strength (TS) of 700-1,200 MPa after hot stamping while guaranteeing elongation (EL) of 12% or more by adjusting alloy components and controlling process conditions.


Patent
Hyundai Steel Company | Date: 2016-03-23

A method for improving the weldability of hot stamping parts improving weldability of hot stamping parts with degraded weldability due to surface oxides is provided. In accordance with an embodiment of the present invention, a method for improving the weldability of hot stamping parts comprises : selecting a welding region in a hot stamping part; removing surface oxide of the welding region; and performing welding on a welding region on a hot stamping part with surface oxide removed.


Patent
Hyundai Steel Company | Date: 2016-04-13

A belt replacement device may include: a base portion having a belt placed thereon, the belt being wound in a roll shape; a rotating portion mounted on the base portion, and rotating the belt wound in a roll shape; a transporting portion holding and transporting the belt passed through the rotating portion; a guide portion guiding the belt discharged through the transporting portion; and a loading portion to which the belt dropped from the guide portion is loaded, and the belt replacement device can improve winding workability for the belt.


Disclosed are an incombustible color-coated steel sheet for household appliances and building materials and a method for manufacturing the same, in which a flame-retardant coating composition that is a colored coating composition is coated on a base steel sheet so that the coated steel sheet can have more than a certain level of flame-retardant properties and can also exhibit excellent physical properties, including processability, coating adhesion, corrosion resistance, hardness, etc.


Disclosed are heat-hardened steel with excellent crashworthiness and a method for manufacturing heat-hardenable parts using the same. The heat-hardened steel according to the invention comprises, based on wt %; C: 0.12-0.8%; Cr: 0.01-2%; Mo: 0.2% or less; B: 0.0005-0.08%; Ca: 0.01 or less; Sb: 1.0% or less; and Ti and/or Nb: 0.2%; and the reminder being Fe and inevitable impurities. In addition, the heat-treatment hardening steel satisfies anyone of following conditions i)-iv), wherein condition i) comprises Si: 0.5-3%; Mn: 1-10% and Al: 0.05-2%; condition ii) comprises Si: 1% or less; Mn: 0.5-5%; Al: 0.1-2.5%; and Ni: 0.01-8%; condition iii) comprises Si: 0.5-3%; Mn: 1-10%; Al: 0.1% or less; and Ni: 0.01-8%; and condition iv) comprises Si: 0.5-3%; Mn: 1-10%; Al: 0.1-2.5%; and Ni: 0.01-8%.


Patent
Hyundai Steel Company | Date: 2016-02-03

Disclosed are a steel sheet having excellent and a method for producing the same. The disclosed steel sheet comprises, by weight, 0.005-0.06% carbon (C), 0.2% or less silicon (Si), 1.0-2.0% manganese (Mn), 0.01% or less sulfur (S), 0.2-2.0% aluminum (Al), one or more of chromium (Cr) and molybdenum (Mo) in an amount satisfying 0.3 [Cr wt%]+0.3[Mo wt%] 2.0, and 0.008% or less nitrogen (N), with the remainder being iron (Fe) and inevitable impurities, wherein the density of dislocations in the ferrite matrix of the steel sheet is 1x10^(13)/m^(2) or more.

Loading Hyundai Steel Company collaborators
Loading Hyundai Steel Company collaborators