KR0120734B1 - Method of manufacturing tie-bar - Google Patents
Method of manufacturing tie-barInfo
- Publication number
- KR0120734B1 KR0120734B1 KR1019940021790A KR19940021790A KR0120734B1 KR 0120734 B1 KR0120734 B1 KR 0120734B1 KR 1019940021790 A KR1019940021790 A KR 1019940021790A KR 19940021790 A KR19940021790 A KR 19940021790A KR 0120734 B1 KR0120734 B1 KR 0120734B1
- Authority
- KR
- South Korea
- Prior art keywords
- bar
- tie
- tensile strength
- strength
- manufacturing
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 4
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 3
- 238000005096 rolling process Methods 0.000 claims description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 3
- 239000011574 phosphorus Substances 0.000 claims description 3
- 239000011593 sulfur Substances 0.000 claims description 2
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 229910052748 manganese Inorganic materials 0.000 abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000011572 manganese Substances 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 239000000654 additive Substances 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 4
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
- B21B3/02—Rolling special iron alloys, e.g. stainless steel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/20—Temperature
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
- Metal Rolling (AREA)
Abstract
Description
내용없음.None.
본 고안은 지하철 및 고속전철의 궤도용 침목에 사용되는 타이바(TIE-BAR)의 열간 압연의 제조방법에 관한 것이다.The present invention relates to a method for producing hot rolling of tie bars (TIE-BAR) used in track sleepers of subways and high-speed trains.
일반적으로,지하철 및 고속전철의 궤도용 침목에서 요구되는 타이바의 인장강도는 75㎏/㎟이상이어야 하기 때문에 본 발명은 이러한 점을 해결하기 위하여 탄소, 규서, 망간을 첨가한 강을 열간에서 압연하여 인장강도를 보강한 타이바를 제조할 수 있게 한 것으로서, 이러한 본 발명에 사용되는 첨가원소의 성분범위, 압연 조건 및 기계적 성질등을 상세히 설명하면 다음과 같다.In general, since the tensile strength of the tie bar required in the track sleepers of subways and high-speed trains should be 75 kg / mm2 or more, the present invention provides a hot rolled steel with carbon, silicon, and manganese to solve this problem. In order to manufacture a tie bar reinforced with tensile strength, the component range, rolling conditions, and mechanical properties of the additive element used in the present invention will be described in detail as follows.
(1) 탄소(c)(1) carbon (c)
탄소는 강도와 경도를 증가시키지만 연성과 인성을 저하시키므로 첨가성분범위를 0.60~0.75wt%로 하였다.Carbon increases strength and hardness, but decreases ductility and toughness, so the range of additive components is 0.60 to 0.75 wt%.
(2) 규소(si)(2) silicon (si)
규소는 강도와 경도를 증가시키거나 탈산효과를 증가시키지만 과다할 경우 연신률 및 충격치를 저하시키므로 첨가성분범위를 0.10~0.35wt%로 하였다.Silicon increases the strength and hardness, or increases the deoxidation effect, but when excessively decreases the elongation and impact value, the range of additive content is 0.10 to 0.35 wt%.
(3)망간(Mn)(3) Manganese (Mn)
망간은 연성을 감소시키지 않고 강도를 증가시키는 성분이지만 과다하면 용접성을 해치므로 첨가 성분범위를 0.60~0.95wt%로 하였다.Manganese is a component that increases the strength without reducing the ductility, but if excessively damages the weldability, the range of the additive component was set to 0.60 to 0.95 wt%.
(4) 인(p)(4) phosphorus (p)
강중의 p는 Fe와 결합하여 Fe3P라는 혼합물을 만들며, 입자 조대화를 촉진시킨다.P in the steel combines with Fe to form a mixture called Fe 3 P, which promotes grain coarsening.
다소 경도 및 인장강도는 증가시키지만 인성을 감소시키며 상온취성 및 열간압연시 밴드스트럭쳐(Bandstructure)의 원인이 된다. 또한 인은 탄소량이 많을수록 그해가 크므로 상한선을 0.045wt%로 하였다.Although it increases hardness and tensile strength somewhat, it reduces toughness and causes band structure at room temperature brittleness and hot rolling. In addition, since phosphorus has a larger amount of carbon the year, the upper limit is 0.045wt%.
(5) 황(s)(5) sulfur (s)
강중의 s는 Mn과 결합하여 MnS를 만들고 또한 s는 Fe와 결합하여 저융점의 FeS를 만들어 압연시 압연방향으로 점성변형 인장강도 및 연성,충격치를 감소시키므로 상한선을 0.050wt%로 하였다.S in steel combines with Mn to make MnS, and s combines with Fe to make FeS of low melting point, which reduces the viscous strain tensile strength, ductility, and impact value in the rolling direction during rolling, so the upper limit is 0.050wt%.
(6)압연조건(6) Rolling condition
열간 가공을 위한 가열온도는 제품의 표면을 양호하게 하고 미세한 결정립을 얻으므로 강도 및 인성에뛰어난 제품을 제조하기 위하여 압연가열온도를 1250±20℃로 선택한다.The heating temperature for hot working makes the surface of the product good and obtains fine grains. Therefore, the rolling heating temperature is selected to be 1250 ± 20 ℃ in order to manufacture products with excellent strength and toughness.
[실시예]EXAMPLE
표1과 같은 성분의 강을 시료로하여 강을 시료로하여 각 시료를 1260±20℃로 가열 한 후 서냉하여 교정한 후, 시험결과는 표2와 같이 항목강도,인장강도,연신률 및 경도가 매우 양호하여 지하철이나 고속전철의 궤도용 침목에서 요구되는 타이바의 인장 강도를 만족하게 된 것이다.After each steel is heated to 1260 ± 20 ℃ with the steel of sample as the sample as shown in Table 1, and then cooled by slow cooling, the test results are as shown in Table 2 and the item strength, tensile strength, elongation and hardness are It is very good to satisfy the tensile strength of the tie bar required in the track sleepers of the subway or high-speed train.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019940021790A KR0120734B1 (en) | 1994-08-31 | 1994-08-31 | Method of manufacturing tie-bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019940021790A KR0120734B1 (en) | 1994-08-31 | 1994-08-31 | Method of manufacturing tie-bar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR960007032A KR960007032A (en) | 1996-03-22 |
| KR0120734B1 true KR0120734B1 (en) | 1997-10-22 |
Family
ID=19391667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019940021790A KR0120734B1 (en) | 1994-08-31 | 1994-08-31 | Method of manufacturing tie-bar |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR0120734B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7854900B2 (en) | 2000-05-18 | 2010-12-21 | Sharp Kabushiki Kaisha | Sterilization method |
-
1994
- 1994-08-31 KR KR1019940021790A patent/KR0120734B1/en not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7854900B2 (en) | 2000-05-18 | 2010-12-21 | Sharp Kabushiki Kaisha | Sterilization method |
| US8773838B2 (en) | 2000-05-18 | 2014-07-08 | Sharp Kabushiki Kaisha | Sterilization method, ion generating device, ion generating apparatus, and air conditioning apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| KR960007032A (en) | 1996-03-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| E701 | Decision to grant or registration of patent right | ||
| GRNT | Written decision to grant | ||
| LAPS | Lapse due to unpaid annual fee |