公开(公告)号：KR1020150118664A

公开(公告)日：2015-10-23

申请号：KR1020140044437

申请日：2014-04-14

Applicant: 현대자동차주식회사 ,  기아자동차주식회사

Inventor： 최연창 ,  신호철 ,  이정석

IPC: C22C37/08

CPC classification number: C22C37/08 ,  C22C37/10 ,  C22C2202/00 ,  F01N13/10

Abstract: 피로수명및 크립저항성이우수한오스테나이트계내열주철이소개된다. 본발명의피로수명및 크립저항성이우수한오스테나이트계내열주철은, 탄소(C) : 2.0 wt% 이하(0wt% 제외), 실리콘(Si) : 4.5 ~ 4.9 wt%, 망간(Mn) 0.5 ~ 0.7 wt%, 니켈(Ni) 23.0 ~ 25.0 wt%, 크롬(Cr) 2.0 ~ 2.3 wt%, 몰리브덴(Mo) 0.5 ~ 0.9 wt%, 바나듐(V) : 0.4 ~ 0.7 wt%, 잔부는철(Fe) 및불가피한불순물을포함한다.

Abstract translation: 公开了奥氏体系列耐热铁铸件，具有优异的疲劳寿命和抗蠕变性。 根据本发明，具有优异的疲劳寿命和抗蠕变性的奥氏体系耐热铁铸件包括：碳（C）的2.0重量％以下（不包括0重量％），硅（Si）4.5-4.9重量％ 0.5-0.7重量％的锰（Mn），23.0-25.0重量％的镍（Ni），2.0-2.3重量％的铬（Cr），0.5-0.9重量％的钼（Mo），0.4-0.7重量％ 钒（V）和含铁（Fe）和不可避免的杂质的剩余部分。

公开(公告)号：KR101488293B1

公开(公告)日：2015-01-30

申请号：KR1020120149212

申请日：2012-12-20

Applicant: 현대자동차주식회사 ,  기아자동차주식회사

Inventor： 사보경 ,  이정석

IPC: C22C38/08 ,  C22C38/40 ,  C22C38/58

Abstract: 본 발명은 오스테나이트계 스테인리스강에 관한 것으로, 보다 상세하게는 철(Fe)을 기재로 하고, 전체 합금 중량 대비 니켈(Ni) 15.1 내지 17.0 중량% 및 질소(N) 0.21 내지 0.40 중량%를 포함하며 내열성 및 고온 인장강도 등이 개선되어 터보 엔진의 체결 볼트 등 고온 환경에 적용 가능한 오스테나이트계 스테인리스강에 관한 것이다.

公开(公告)号：KR1020130136335A

公开(公告)日：2013-12-12

申请号：KR1020120060056

申请日：2012-06-04

Applicant: 현대자동차주식회사

Inventor： 이정석

IPC: C22C38/00 ,  C22C38/40 ,  C22C38/58

CPC classification number: C22C38/58 ,  C22C38/001 ,  C22C38/02 ,  C22C38/44 ,  C22C38/48

Abstract: The present invention relates to austenitic heat-resistant cast steel for an exhaust system to have significant improvements in heat-resistance, oxidation, high-temperature strength, and high-temperature fatigue life. The austenitic heat-resistant cast steel for an exhaust system comprises 0.4-0.6 weight% of carbon (C), 0.5-0.8 weight% of silicone (Si), 3.5-4.5 weight% of nickel (Ni), 20-22 weight% of chrome (Cr), 1.0-2.0 weight% of niobium (Nb), 0.8-1.5 weight% of tungsten (W), 0.35-0.45 weight% of nitrogen (N), 3.5-4.5 weight% of manganese (Mn), and remaining amount of iron.

Abstract translation: 本发明涉及一种具有显着提高耐热性，氧化，高温强度和高温疲劳寿命的排气系统的奥氏体系耐热铸钢。 用于排气系统的奥氏体耐热铸钢包括碳（C）的0.4-0.6重量％，硅酮（Si）0.5-0.8重量％，镍（Ni）3.5-4.5重量％，20-22重量％ 的铬（Cr），1.0-2.0重量％的铌（Nb），0.8-1.5重量％的钨（W），0.35-0.45重量％的氮（N），3.5-4.5重量％的锰（Mn） 和剩余铁量。

公开(公告)号：KR100999676B1

公开(公告)日：2010-12-08

申请号：KR1020080078255

申请日：2008-08-11

Applicant: 현대자동차주식회사

Inventor： 이정석

IPC: C21D8/06 ,  C22C38/00

Abstract: 빌렛을 550 내지 700℃에서 어닐링하는 과정, 여기서, 빌렛은 중량%로, 탄소 0.60~0.70%, 실리콘 2.50~3.50%, 망간 0.50~0.90%, 인 0.025% 이하, 황 0.025% 이하, 크롬 0.80~1.50%, 몰리브덴 0.20~0.40%, 니켈 0.10~0.20%, 브롬 0.0010~0.0050%, 알루미늄 0.010~0.050%, 티타늄 0.01 내지 0.04%, 질소 0.01~0.02%, 잔부 철을 포함하는 조성을 갖는 밸브스프링용 선재 및 이러한 선재의 제조방법이 소개된다. 본 발명에 따른 선재는 인장강도 및 피로강도가 우수하며, 원가절감을 가능하게 한다.
엔진, 밸브스프링, 선재, 인장강도, 피로강도, 경도, 성형성, 열처리

公开(公告)号：KR100345126B1

公开(公告)日：2002-07-24

申请号：KR1019990063672

申请日：1999-12-28

Applicant: 현대자동차주식회사

Inventor： 이정석

IPC: F16H61/04

Abstract: 개시되는차량용자동변속기의변속제어방법은, 2속주행중인차량에서스로틀밸브개도량, 터빈회전수, 차속에대응하는출력측회전수, 유온및 엔진회전수의검출값을검출값을인가받아판독하고, L.F.U 2 → 3 업쉬프트신호가인가되었는가를비교판단하는단계와; 상기단계에서 2속주행중 L.F.U 2 → 3 업쉬프트신호가인가됨이판단되면, 기설정된 2 → 3 업쉬프트제어듀티를설정하여 A영역의 2 → 3 업쉬프트제어신호를출력하는단계와; 상기 L.F.U 2 → 3 업쉬프트변속중, 운전자의가속의지에따른킥 다운 3 → 2 다운쉬프트변속이발생되었는가를비교판단하는단계와; 상기에서 L.F.U 2 → 3 업쉬프트변속중, 킥다운 3 → 2 다운쉬프트신호가인가됨이판단되면, 2 → 3 업쉬프트의최종듀티를α%/sec의감소기울기로 B영역동안출력하는단계와; 터빈회전수(Nt)가소정의목표터빈회전수(Ntc)보다작은가비교판단하는단계와; 상기단계에서상기터빈회전수(Nt)가상기목표터빈회전수(Ntc)보다작다고판단되면, 상기 B영역에서의듀티감소를종료하고, 소정의시간(tc)동안 C영역에서터빈회전수(Nt)를안전화시키기위해듀티를홀딩시키는단계와; 듀티가홀딩되기시작한시점부터소정시간(tc)이경과되었는가를비교판단하는단계와; 상기단계에서듀티홀딩시간(t)이소정시간(tc)이경과한것으로판단되면, D영역이후의기설정된킥 다운 3 → 2 쉬프트제어를수행하는단계와; 변속동기가완료되었는가를판단하여, 상기킥 다운 3 → 2 변속동기가완료됨이판단되면, 모든제어를종료하고, 메인루틴으로리턴하는단계;를포함하는것을그 특징으로한다. 본발명에따르면, 킥다운변속응답성을향상시킬수 있고, 엔진회전수의상승을방지하여운전성을향상시킬수 있는이점이있다.

公开(公告)号：KR1020020015776A

公开(公告)日：2002-03-02

申请号：KR1020000048879

申请日：2000-08-23

Applicant: 현대자동차주식회사

Inventor： 이정석

IPC: F16H61/00

CPC classification number: F16H61/04 ,  F16H59/52 ,  F16H2059/743 ,  F16H2059/746 ,  F16H2061/0459 ,  F16H2710/24

Abstract: PURPOSE: An on-and-off control method of an automatic transmission for a vehicle is provided to detect power on and off according to load of the vehicle accurately in controlling power-on/power-off of the automatic transmission. CONSTITUTION: A variable against an engine, factors and automatic transmission variables are input(20), and acceleration is calculated with test weight against torque of the engine by program(21). The past velocity is subtracted from the present velocity, and the actual acceleration is calculated with dividing subtracted vehicle speed by hours(22). The actual mass is calculated with actual acceleration and estimating acceleration(23). Load of the vehicle is calculated with actual mass(24), and the torque of the vehicle load is detected to be less than the torque of the engine(25). Power-on is detected in case of the vehicle load torque to be less than the engine torque, and power-off is decided in case of the vehicle load torque to be over the engine torque(27). Shifting quality is improved with detecting power-on/off accurately by detecting the vehicle load torque and the engine load torque.

Abstract translation: 目的：提供一种用于车辆的自动变速器的开关控制方法，用于在控制自动变速器的通电/断电时，根据车辆的负载精确地检测电力的接通和关断。 输入（20），根据程序（21），根据发动机转矩的测试重量计算加速度。 从当前速度中减去过去的速度，用实际加速度乘以减去车速乘以小时计算（22）。 实际质量是用实际加速度和加速度估计的（23）。 以实际质量（24）计算车辆的载荷，并且检测车辆载荷的扭矩小于发动机（25）的扭矩。 在车辆负载转矩小于发动机扭矩的情况下，检测到电源接通，并且在车辆负载转矩超过发动机转矩（27）的情况下决定断电。 通过检测车辆负载转矩和发动机负载转矩，通过检测电源开/关精确地改善了移动质量。

公开(公告)号：KR1020140079961A

公开(公告)日：2014-06-30

申请号：KR1020120149212

申请日：2012-12-20

Applicant: 현대자동차주식회사 ,  기아자동차주식회사

Inventor： 사보경 ,  이정석

IPC: C22C38/08 ,  C22C38/40 ,  C22C38/58

CPC classification number: C22C38/58 ,  C21D2211/001 ,  C22C38/001 ,  C22C38/02 ,  C22C38/44 ,  C22C38/46 ,  F16B39/22

Abstract: The present invention relates to an austenitic stainless steel. In particular, the austenitic stainless steel includes iron (Fe), as a base substance, and includes 15.1-17.0 weight% of nickel (Ni) and 0.21-0.40 weight% of nitrogen (N). The austenitic stainless steel has enhanced heat resistance and an enhanced tensile strength at high temperatures so that austenitic stainless steel can be applied to objects used in a high-temperature environment such as joining bolts of a turbo engine.

Abstract translation: 奥氏体不锈钢本发明涉及奥氏体不锈钢。 特别地，奥氏体不锈钢包括铁（Fe）作为基础物质，并且包括15.1-17.0重量％的镍（Ni）和0.21-0.40重量％的氮（N）。 奥氏体不锈钢在高温下具有增强的耐热性和提高的拉伸强度，使得奥氏体不锈钢可以应用于诸如涡轮发动机的接合螺栓的高温环境中使用的物体。

公开(公告)号：KR1020120040437A

公开(公告)日：2012-04-27

申请号：KR1020100101854

申请日：2010-10-19

Applicant: 현대자동차주식회사 ,  기아자동차주식회사

Inventor： 이정석

IPC: B21F35/00 ,  C21D9/02 ,  C21D7/06 ,  C22C38/02

CPC classification number: B23P15/00 ,  B21F3/02 ,  B21F11/005 ,  B21F35/00 ,  B21F99/00 ,  C21D1/30 ,  C21D7/06 ,  C21D8/06 ,  C21D8/065 ,  C21D9/02 ,  C22C38/04 ,  C22C38/34 ,  C22C38/44 ,  C22C38/46 ,  C22C38/54 ,  F01L1/462 ,  F01L2101/00 ,  F01L2103/00 ,  F01L2103/01 ,  F01L2820/01

Abstract: PURPOSE: The method of manufacturing a high intensity valve spring for a vehicle engine and the high intensity valve spring manufactured by the same are provided to prevent the occurrence of damages during manufacturing processes and to prevent the reduction of hardness. CONSTITUTION: The method of manufacturing a high intensity valve spring for a vehicle engine includes the following: a high intensity wire rod is shaped into a spring form based or a roller type jig. The end part of the shaped spring is cut into a rotary type based on a cutting blade. Thermal treatment is implemented for eliminating remaining stress at a temperature between 390 and 410 degrees Celsius for 20 to 40 minutes. A short pinning operation is implemented for applying compressive stress to the surface of the spring. After the short pinning operation, a hot-setting operation is implemented by previously applying plastic deformation to the spring.

Abstract translation: 目的：制造用于车辆发动机的高强度阀弹簧的制造方法和由其制造的高强度阀弹簧，以防止在制造过程中发生损坏并防止硬度降低。 构成：制造用于车辆发动机的高强度气门弹簧的方法包括：高强度线材成形为基于弹簧形式或辊型夹具。 成形弹簧的端部基于切割刀片切割成旋转型。 实施热处理以消除在390至410摄氏度之间的温度下的剩余应力20至40分钟。 实施短的钉扎操作以将压应力施加到弹簧的表面。 在短锁定操作之后，通过预先向弹簧施加塑性变形来实现热定型操作。

公开(公告)号：KR1020100019603A

公开(公告)日：2010-02-19

申请号：KR1020080078255

申请日：2008-08-11

Applicant: 현대자동차주식회사

Inventor： 이정석

IPC: C21D8/06 ,  C22C38/00

CPC classification number: C22C38/54 ,  C21D8/065 ,  C22C38/001 ,  C22C38/04 ,  C22C38/06 ,  C22C38/34 ,  C22C38/44 ,  C22C38/50

Abstract: PURPOSE: A wire for valve spring with excellent tensile strength and fatigue strength and a manufacturing method thereof are provided to reduce manufacture cost and have excellent tensile strength and fatigue strength. CONSTITUTION: A manufacturing method of a wire for valve spring with excellent tensile strength and fatigue strength comprises the following processes of: annealing a billet at 550~700°C; grinding the surface of the annealed billet; processing the ground billet at the constant temperature to produce fine pearlite; wire-drawing the heat-treated billet through rolling; hardening the wire material to produce martensite; and tempering the wire material to produce the martensite.

Abstract translation: 目的：提供具有优异的拉伸强度和疲劳强度的阀弹簧用丝及其制造方法，以降低制造成本并具有优异的拉伸强度和疲劳强度。 构成：具有优异的拉伸强度和疲劳强度的用于阀弹簧的线材的制造方法包括以下方法：在550〜700℃退火坯料; 研磨退火钢坯的表面; 在恒温下加工地面坯料，生产细珠光体; 通过轧制拉丝热处理钢坯; 硬化线材生产马氏体; 并回火线材以产生马氏体。

公开(公告)号：KR1020080102556A

公开(公告)日：2008-11-26

申请号：KR1020070049160

申请日：2007-05-21

Applicant: 현대자동차주식회사

Inventor： 이정석

IPC: C22C38/02 ,  C22C38/04

CPC classification number: C22C38/38 ,  B21K1/00 ,  C21D8/005 ,  C21D9/00 ,  C22C38/002 ,  C22C38/06 ,  C22C38/22 ,  C22C38/32 ,  C22C38/34 ,  Y02P10/253

Abstract: Hardening steel using high frequency heat treatment and a method for manufacturing the same are provided to manufacture high-strength gear by controlling the alloy component of low carbon alloy steel and replacing the carburizing heat treatment after the hot forging with the high-frequency heat treatment. Hardening steel using high frequency heat treatment contains iron(Fe) as the main component, and carbon(C) 0.50~0.70 weight%, silicon(Si) 1.00~2.00 weight%, manganese(Mn) 1.00~2.00 weight%, phosphorus(P) 0.025 weight% or less, sulfur(S) 0.025 weight%, chrome(Cr) 0.80~1.20 weight%, molybdenum(Mo) 0.10~0.40 weight%, aluminium(Al) 0.010~0.050 weight%, and boron(B) 0.005~0.050 weight%. A method for manufacturing the hardening steel comprises a step for hot-forging the hardening steel at 1200°C, an annealing and processing step, a quenching and tempering step for air-cooling to 0.25~5°C/s using a fan, a step for high frequency heat-treating at 860~930°C for 10 minutes, and a precision processing step.

Abstract translation: 提供使用高频热处理的硬化钢及其制造方法，通过控制低碳合金钢的合金成分，通过高频热处理代替热锻后的渗碳热处理，制造高强度齿轮。 使用高频热处理的硬化钢含铁（Fe）为主要成分，碳（C）为0.50〜0.70重量％，硅（Si）1.00〜2.00重量％，锰（Mn）1.00〜2.00重量％ P）0.025重量％以下，硫（S）0.025重量％，铬（Cr）0.80〜1.20重量％，钼（Mo）0.10〜0.40重量％，铝（Al）0.010〜0.050重量％ ）0.005〜0.050重量％。 硬化钢的制造方法包括在1200℃下热锻硬化钢的步骤，退火和加工步骤，使用风扇进行空气冷却至0.25〜5℃/ s的淬火回火步骤， 在860〜930℃进行高频热处理10分钟，精密加工步骤。