CN103422020B - Steel plate for punching-welding axle housing and manufacturing method thereof - Google Patents
Steel plate for punching-welding axle housing and manufacturing method thereof Download PDFInfo
- Publication number
- CN103422020B CN103422020B CN201310399097.3A CN201310399097A CN103422020B CN 103422020 B CN103422020 B CN 103422020B CN 201310399097 A CN201310399097 A CN 201310399097A CN 103422020 B CN103422020 B CN 103422020B
- Authority
- CN
- China
- Prior art keywords
- steel
- steel plate
- temperature
- carbon
- axle housing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Heat Treatment Of Steel (AREA)
Abstract
The invention relates to a 600MPa steel plate which is used for punching and welding an axle housing after being heated and is good in hot punching formability and a manufacturing method of the steel plate. Nb, V and other elements which guarantee the high temperature performance of steel are added, the content of C, Si and other elements which influence punching performance is lowered, Ti, Al and other nitrogen fixation elements are in cooperation, the steel plate is fundamentally guaranteed to have the good formability, meanwhile, high-temperature strength is improved, low-temperature toughness is excellent, welding performance is improved, fatigue strength is obviously improved, and the fatigue life of the component is prolonged by more than 50%. The steel plate can be widely applied to the production of medium plate rolling pieces in large structures of hot forming, a large air blower, a vibrating screen and the like under a high temperature condition, and the steel for the medium plate rolling pieces requires for high-temperature strength.
Description
Technical field
The present invention relates to a kind of punching weldering axle housing steel plate and manufacture method thereof, directly punching press after especially a kind of 700-850 DEG C of heating, the quality plate being welded into the 600MPa level heat stamping and shaping of axle case assy and manufacture method thereof.
Background technology
Loss of weight, energy-conservation, safety, environmental protection are the themes of world today's production sustainable development, and to reduce equipment self-weight be one of most effective measure reducing fuel oil consumption and emissions reduction.Axle housing as the important safety member of automobile and functional part, its support frame and the later each assembly weight of vehicle frame, each parts of its protection transmission system simultaneously.In use, the shape of axle housing and constructional feature thereof determine high, the bending and draw forming of axle housing part material requirements intensity and get well and have excellent welding property, heavily loaded manufacture field at home, the production technique of axle housing just progressively replaces casting bridge shell by punching weldering axle housing.
At present, domestic heavy-duty car punching weldering axle housing is shaped by the steel hot stamping such as Q345, beam steel 510L of more than thickness 10mm, its manufacturing process is: after steel plateelement is heated to require temperature 700-850 DEG C of isothermal treatment for short time, on pressing machine, hot stamping becomes half bridge shell, form axle housing by two half bridge shell butt welding, and then be welded into axle housing body by axle housing and axle tube.Adopt the common beam steel such as Q345, beam steel 510L to substitute to also exist the corresponding problems such as armor plate strength decline degree after heat stamping and shaping is large, intensity is low, forming property is poor, scrap rate is high, unstable product quality.Consider the feature of axle housing security and heat stamping and shaping, the intensity rank rushing Welding requirement axle housing steel improves, also require that fatigue strength is high, after good impelling strength, thermoforming, performance does not reduce and excellent welding property, ensures final finished part size and performance with this.Therefore in the urgent need to developing one more high strength axle housing steel sheet replacement low strength Plate Steel in the past, when characteristics such as ensureing axle housing intensity and toughness does not reduce, alleviating axle housing deadweight, reducing production cost.
Disclosed in State Intellectual Property Office, the application number of Wuhan Iron & Steel's application is 200910063835.0, name is called the patent of " a kind of hot-rolling stamping axle housing steel for automobile with 510 Mpa-grade tensile strength and preparation method thereof ", its feature be to have employed in Composition Design conventional beam steel C-Si-Mn Composition Design, adopt that hot continuous rolling-coiling technique is produced, tensile strength only 510MPa level, maximum ga(u)ge 16mm, its Composition Design, production technique, raising hot formability mechanism have substantial different from the present invention.
Disclosed in State Intellectual Property Office, the application number of Liuzhou Iron and Steel Co., Ltd.'s application is 201110263882.7, the patent of " steel plate for automobile axle housing and production method thereof " by name, the patent provides a kind of yield strength 400MPa, the yield tensile ratio cold formability steel between 0.73-0.79, intensity rank is low, and ensure emphatically its good cold forming capability, its Composition Design and the Composition Design of heat stamping and shaping steel have substantial different, in the present processing performance of final body, the requirement that after being difficult to meet downstream user hot-work, intensity does not reduce.
Summary of the invention
Object of the present invention is exactly defect for above-mentioned existence and provides a kind of punching weldering axle housing steel plate and manufacture method thereof, especially a kind ofly can meet directly punching press after heating, the steel plate of 600MPa level heat stamping and shaping excellent property of welding and manufacture method thereof.The Composition Design that this steel plate adopts with the addition of the element that Nb, V etc. ensure the high-temperature behavior of steel, reduce the constituent content that C, Si etc. affect punching performance, controlled by molten steel oxidation during converter smelting, S content control during tapping, deoxidation extent control, the rational refining of LF, give full play to the advantage direct temperature-controlled rolling of plate mill in the vertical uniform steel plate of lateral performance of production to become a useful person, thus omit normalizing process and reduce costs.The weldering axle housing steel plate that rushes produced has excellent thermo forming, and after hot-work, mechanical property change is little, and unit elongation, bending index are high; Steel plate of the present invention has good fatigue property, improves component's life more than 50%; The production of Clean Steel ensure that good low-temperature impact toughness, has the advantages that low-carbon-equivalent easily welds, with low cost, steady quality, technique are simple, be easy to industrialized mass.
One punching weldering axle housing steel plate of the present invention and manufacture method technical scheme thereof are, steel plate chemical composition content is by weight percentage: carbon 0.15-0.19%, silicon≤0.10%, manganese 1.45-1.65%, phosphorus≤0.015%, sulphur≤0.008%, niobium 0.025-0.045%, vanadium 0.035-0.050%, titanium 0.015-0.030%, aluminium 0.020-0.045%; Carbon equivalent≤0.46%, surplus is iron and inevitable impurity.
Further, steel plate chemical composition content is by weight percentage: carbon 0.16-0.18%, silicon≤0.06%, manganese 1.50-1.60%, phosphorus≤0.012%, sulphur≤0.006%, niobium 0.030-0.040%, vanadium 0.035-0.045%, titanium 0.015-0.025%, aluminium 0.020-0.035%; Carbon equivalent≤0.46%, surplus is iron and inevitable impurity.
Preferably, steel plate chemical composition content is by weight percentage: carbon 0.17%, silicon 0.04%, manganese 1.55%, phosphorus 0.010%, sulphur 0.003%, niobium 0.035%, vanadium 0.040%, titanium 0.025%, aluminium 0.028%, carbon equivalent 0.44%, and surplus is iron and inevitable impurity.
Yield strength>=480MPa, tensile strength 600-700MPa, unit elongation>=21%, 180
0cold-bending property d=2a, steel plate thickness 6-20mm.
The manufacture method of above-mentioned punching weldering axle housing steel plate, comprises the process of KR desulfurizing iron, converter terminal control, deoxidation alloying, LF refining, continuous casting, slow cooling heating, rolling technology.
Rush a manufacture method for weldering axle housing steel plate, concrete steps are,
(1) KR desulfurizing iron: molten iron temperature >=1300 DEG C after KR desulfurizing iron.
(2) converter terminal controls: converter terminal composition C=0.07-0.10%, Si≤0.01%, S≤0.010%, P≤0.012%, terminal temperature 1640 ~ 1660 DEG C;
(3) deoxidation alloying: adopt aluminium ferromanganese and high carbon ferromanganese deoxidation alloying, aluminum steel is disposable to add;
(4) LF refining: the refining slag and the shallow process of submerged arc slag that use low silicon content, LF refining time, in 50 minutes, adds ferrotianium after heating terminates; Ca process is carried out after refining treatment; First stove out-station temperature 1585 DEG C ~ 1595 DEG C, other heat out-station temperature 1585 DEG C ~ 1590 DEG C.
(5) continuous casting: adopt whole process protection pouring technology, large bag automatic casting, not in slag situation, adds low-carbon (LC) insulating covering agent in tundish; Increase the argon flow amount of argon envelope to 40-70L/min.
(6) slow cooling, heating: to continuously cast bloom stacking slow cooling 48 hours, heat afterwards, heat-up time 3.5-4.5 hour, tapping temperature 1120-1180 DEG C after heating.
(7) rolling: continuously cast bloom heats the de-scaling of laggard horizontal high voltage water, plate mill start rolling temperature 1050 ~ 1090 DEG C, the percentage pass reduction of hot stage previous three passes is greater than 20%, and last pass is 6-8 passage, and finish rolling finishing temperature control is at 850-880 DEG C.
Molten steel sulfur content [S]≤0.003% in step (1) after process.
In step (2), a smelting process catch carbon operation, blows operation without point.
Step adds ferrotianium in (4), makes Ti content >=3.4N+1.5S.
In step (4), after Ca process, in steel, Ca, Al mass ratio is 0.09 ~ 0.14.
One punching weldering axle housing steel plate of the present invention and manufacture method beneficial effect thereof are: the main alloy element that the present invention selects and the effect of quantity in steel plate thereof are:
Carbon (C): the present invention is a kind of steel for welded structures, for improving the weldability of steel, needs comparatively low carbon content.C is the strengthening to steel matrix as solution strengthening element, has material impact to the yield strength of steel, and its strengthening effect is certain, does not change because of rolling pattern change.But along with the raising of carbon content, the intensity of steel improves, and plasticity, toughness decline, and welding property is deteriorated, and consider the technico-economical comparisones such as thermoforming performance requriements, smelting cost, best carbon content of the present invention is 0.15 ~ 0.19%.
Silicon (Si): reduce plasticity while silicon improves the intensity of steel.If Si too high levels can make grain coarsening again, increase the superheated susceptivity of steel, the welding property of steel can be worsened simultaneously.In the present invention, silicone content is ≤0.10%.
Manganese (Mn): Mn have impact on the stacking fault energy of matrix as substitutional element, it produces larger impact by work hardening capacity and tensile strength, very favourable to the uniform plastic improving steel, effectively can reduce yield tensile ratio.Consider Mn of the present invention to be advisable with 1.45-1.65%.
Niobium (Nb), vanadium (V), titanium (Ti): the key property of heat stamping and shaping steel is that in its heat situation of requirement, loss of strength is little, hot stamping is functional.Although Cr, Mo can improve the hot strength of steel, they are noble elements, and adding this large amount of dvielements in steel will increase considerably production cost, and this is to using the structured material had a large capacity and a wide range to be infeasible.In addition, the alloying elements such as Cr, Mo increase the hardening capacity of steel, improve carbon equivalent, easily worsen the toughness of weldability and welded heat affecting zone.And the precipitate of Nb-V-Ti microalloy element has good high-temperature stability, wholesome effect can be produced to raising hot strength.Research shows, the high temperature of Nb in acicular ferrite structure is separated out, and can significantly improve the hot strength of steel.The effect of V, Ti is identical with Nb, Nb-V-Ti micro alloying element compound use, can reach best High-Temperature Strengthening effect.Add the forming element of one or more carbonitrides such as Nb, V, Ti in steel, carbon in steel, nitrogen gap level can be controlled, improve formability and aging resistance.Titanium also can be used as steel medium sulphide content modifying element and uses, to improve the performance difference in length and breadth of steel plate.Therefore thermoforming steel of the present invention adds these microalloy elements and takes full advantage of its advantageous effect to performance.
Aluminium (Al): aluminium as AlN forming element, with Nb, Ti compound use, fix N element while crystal grain thinning effectively.Because in steel, deoxidant element Si content is very low, must add Al in Composition Design and ensure abundant deoxidation, reductor adds in steel as a supplement, improves steel, but too high levels can increase the alumina inclusion in steel.Aluminium content of the present invention is at 0.020-0.045%.
Sulphur (S): reduce the volume fraction of steel inclusion or change inclusion shape and can improve the formability of steel, weldability and mechanical property.Especially will reduce the bar shaped inclusion MnS produced in the operation of rolling, need to carry out Ca process in steelmaking process to make inclusion be converted into harm by bar shaped less and to be easily equally distributedly spherically mingled with for this reason, and the negative impact of inclusion is reduced to minimum.S content of the present invention is below 0.008%.
Phosphorus (P): P improves the intensity of steel, reduces the plasticity of steel.Phosphorus belongs to the more serious element of segregation, and consider that segregation and economy smelt factor, P of the present invention controls the Ductility Requirement that can meet steel below 0.015%.
Require that performance and the common 600MPa level steel Q460C reheating steel plate, dissect after punching press contrasts according to thermoforming process, the performance test results that table 1 is depicted as before and after thermoforming contrasts.Can obtain the final yield strength Rel of steel plate by universal testing machine, tensile strength Rm, unit elongation A, for embodying homogeneity, two tension tests have been done in some tests, and what have has done three tension tests.
Table 1
。
From upper table, after ordinary steel Q460C heats, strength degradation is comparatively large, has not met the requirement of yield strength 460MPa, and steel plate of the present invention strength degradation amplitude is little after the heating, the requirement of more than the yield strength 480MPa that user requires can be met completely.
Table 2 is asked for an interview by the axle case assy simulated condition fatigue test results that steel of the present invention and common 600MPa level product Q460C bi-material are made, the axle case assy cycle index utilizing common Q 460C to manufacture far does not reach 800,000 times of design requirements, and steel fatigue test results of the present invention is higher than the index of steel plate of the same type, show good fatigue property, approximately improve component's life more than 50%.
Table 2
。
Therefore compared with prior art, one punching weldering axle housing steel plate of the present invention and manufacture method thereof have following beneficial effect:
(1) Composition Design is unique, the element that Nb, V etc. ensure the high-temperature behavior of steel is with the addition of in steel, reduce the constituent content that C, Si etc. affect punching performance, by the cooperation of the nitrogen killers such as Ti, Al, fundamentally ensure that steel plate there is good formability while hot strength raising, excellent in low temperature toughness, welding property improve, its Composition Design is obviously different from prior art.
(2) processing route controls uniqueness, controlled by molten steel oxidation during converter smelting, S content control during tapping, the rational refining time of deoxidation extent control, LF control, make that the Narrow Composition Control of low silicon is guaranteed, Cleanliness of Molten Steel improves, inclusion size reduces, the raising of the cleanliness factor of steel ensure that axle housing steel fatigue strength under Cyclic Load significantly improves, the fatigue lifetime more than 50% of member for prolonging;
(3) fully adopt direct temperature-controlled rolling to become a useful person acquisition fine grained steel, omit normalizing process, reduce operation consumption while guaranteeing steel plate hot processability, shorten delivery date;
(4) Technology strong adaptability, thickness specification wide ranges.
Method and technology of the present invention has adaptability widely, and the large scale structure steel that may extend to the operation under the high temperature conditions such as large blower, vibratory screening apparatus requires that the plate of moderate thickness rolled piece of higher hot strength is produced.The high tensile steel plate maximum ga(u)ge produced can reach 20mm, and the strength level of steel breaks through existing Q345,510L intensity rank scope, reaches more than 600MPa level, really realizes the production of high-performance steel.
Accompanying drawing explanation
Fig. 1 is steel plate metallographic structure.
embodiment:
In order to understand the present invention better, describe technical scheme of the present invention in detail with specific examples below, but the present invention is not limited thereto.
Embodiment 1
Steel plate chemical composition is:
C：0.16%，Si：0.04%，Mn：1.48%，P：0.010%，S：0.003%， Nb：0.027%， V：0.039%，Ti：0.019%，Al：0.029%，CEV：0.41%。All the other are Fe and inevitable impurity.
The production method of steel plate is as follows:
1) after employing KR hot metal pretreatment, molten iron temperature is 1355 DEG C, [S]=0.001% after process in molten iron.
2) converter smelting endpoint composition carbon controls at [C]=0.074%, Si=0.0045%, S=0.009%, P=0.012%, terminal temperature 1640 DEG C; 4.7 minutes two slag-stopping tapping time, in tapping process, ensure that steel ladle full Argon stirs.
3) in deoxidation alloying process, high carbon ferromanganese, aluminium ferromanganese, ferro-niobium, ferro-vanadium add-on are converted by actual tap and alloying constituent, add alloy before tapping 4/5; At CAS station, Argon feeds aluminum steel.
4) LF refining uses SiO
2content is refining slag and the shallow process of submerged arc slag of 10.6%, LF refining time 45 minutes, and heating terminates rear interpolation ferrotianium, feed Ca line after refining, soft argon blowing time 10min after line feeding, in steel, Ca is 0.0027%, Ca, Al ratio (Ca/Al) is 0.093, out-station temperature 1590 DEG C.
5) full guard pouring technology is adopted; Use low carbon protective slag, low-carbon (LC) alkaline covering agent, ladle automatic casting, tundish temperature 1536 DEG C, superheating temperature 21 DEG C, increase the argon flow amount of argon envelope to 60L/min.
6) continuously cast bloom stacking slow cooling 48 hours, in plate of moderate thickness process furnace, heat-up time was according to 3.5 hours, tapping temperature 1150 DEG C.
7) high pressure water jets is blown away except scale on surface, plate mill start rolling temperature 1090 DEG C, and high temperature rough rolling step 11 passage is out of shape, and the percentage pass reduction of hot stage previous three passes is greater than 20%, finish rolling 7 passage, and finishing temperature 856 DEG C, rolls rear air cooling.
The steel plate mechanical property produced:
Specification: 6mm; Yield strength (MPa): 540; Tensile strength (MPa): 680; Elongation after fracture (%): 23; 180
0cold-bending property d=2a is qualified.Ferrite grain size 10 grades.
Embodiment 2
Steel plate chemical composition is:
C：0.17%，Si：0.03%，Mn：1.54%，P：0.012%，S：0.004%， Nb：0.036%， V：0.043%，Ti：0.024%，Al：0.032%，CEV：0.44%。All the other are Fe and inevitable impurity.
The production method of steel plate is as follows:
1) after employing KR hot metal pretreatment, molten iron temperature is 1371 DEG C, [S]=0.003% after process in molten iron.
2) converter smelting endpoint composition carbon controls at [C]=0.10%, Si=0.0005%, S=0.010%, P=0.0086%, terminal temperature 1642 DEG C; 4.8 minutes two slag-stopping tapping time, in tapping process, ensure that steel ladle full Argon stirs.
3) in deoxidation alloying process, high carbon ferromanganese, aluminium ferromanganese, ferro-niobium, ferro-vanadium add-on are converted by actual tap and alloying constituent, add alloy before tapping 4/5; At CAS station, Argon feeds aluminum steel.
4) LF refining uses SiO
2content is refining slag and the shallow process of submerged arc slag of 11.2%, LF refining time 50 minutes, and heating terminates rear interpolation ferrotianium, feed Ca line after refining, soft argon blowing time 11min after line feeding, in steel, Ca is 0.0041%, Ca, Al ratio (Ca/Al) is 0.13, out-station temperature 1585 DEG C.
5) full guard pouring technology is adopted; Use low carbon protective slag, low-carbon (LC) alkaline covering agent, ladle automatic casting, tundish temperature 1539 DEG C, superheating temperature 25 DEG C, increase the argon flow amount of argon envelope to 50L/min.
6) continuously cast bloom stacking slow cooling 48 hours, in plate of moderate thickness process furnace, heat-up time was according to 4 hours, tapping temperature 1160 DEG C.
7) high pressure water jets is blown away except scale on surface, plate mill start rolling temperature 1080 DEG C, and high temperature rough rolling step 9 passage is out of shape, and the percentage pass reduction of hot stage previous three passes is greater than 20%, finish rolling 7 passage, and finishing temperature 875 DEG C, rolls rear air cooling.
The steel plate mechanical property produced:
Specification: 14mm; Yield strength (MPa): 510; Tensile strength (MPa): 650; Elongation after fracture (%): 25.5; 180
0cold-bending property d=2a is qualified.Ferrite grain size 9.5 grades.
Embodiment 3
Steel plate chemical composition is:
C：0.18%，Si：0.04%，Mn：1.58%，P：0.008%，S：0.001%， Nb：0.042%，V：0.046%，Ti：0.026% Al：0.035%，CEV：0.45%。All the other are Fe and inevitable impurity.
The production method of steel plate is as follows:
1) after employing KR hot metal pretreatment, molten iron temperature is 1367 DEG C, [S]=0.002% after process in molten iron.
2) converter smelting endpoint composition carbon controls at [C]=0.061%, Si=0.003%, S=0.008%, P=0.010%, terminal temperature 1650 DEG C; 4.7 minutes two slag-stopping tapping time, in tapping process, ensure that steel ladle full Argon stirs.
3) in deoxidation alloying process, high carbon ferromanganese, aluminium ferromanganese, ferro-niobium, ferro-vanadium add-on are converted by actual tap and alloying constituent, add alloy before tapping 4/5; In the Argon line feeding of CAS station.
4) LF refining uses SiO
2content is refining slag and the shallow process of submerged arc slag of 10.54%, LF refining time 47 minutes, and heating terminates rear interpolation ferrotianium; Feed Ca line after refining, soft argon blowing time 11min after line feeding, in steel, Ca is 0.0045%, Ca, Al ratio (Ca/Al) is 0.13, out-station temperature 1590 DEG C.
5) whole process protection pouring technology is adopted; Use low carbon protective slag, low-carbon (LC) alkaline covering agent, ladle automatic casting, tundish temperature 1536 DEG C, superheating temperature 23 DEG C, increase the argon flow amount of argon envelope to 70L/min.
6) continuously cast bloom stacking slow cooling 48 hours, in plate of moderate thickness process furnace, heat-up time was according to 4.5 hours, tapping temperature 1170 DEG C.
7) high pressure water jets is blown away except scale on surface, plate mill start rolling temperature 1085 DEG C, and high temperature rough rolling step 9 passage is out of shape, and the percentage pass reduction of hot stage previous three passes is greater than 20%, finish rolling 5 passage, and finishing temperature 860 DEG C, rolls rear air cooling.
The steel plate mechanical property produced:
Specification: 20mm; Yield strength (MPa): 485; Tensile strength (MPa): 605; Elongation after fracture (%): 31.5; 180
0cold-bending property d=2a is qualified.Ferrite grain size 9.5 grades.
Claims (2)
1. a punching weldering axle housing steel plate, it is characterized in that, steel plate chemical composition content is by weight percentage: carbon 0.16-0.18%, silicon≤0.06%, manganese 1.50-1.60%, phosphorus≤0.012%, sulphur≤0.006%, niobium 0.030-0.040%, vanadium 0.035-0.045%, titanium 0.015-0.025%, aluminium 0.020-0.035%; Carbon equivalent≤0.46%, surplus is iron and inevitable impurity, yield strength>=480MPa, tensile strength 600-700MPa, unit elongation>=21%, 180
0cold-bending property d=2a, steel plate thickness 6-20mm;
Described a kind of manufacture method of rushing weldering axle housing steel plate,
(1) KR desulfurizing iron: molten iron temperature >=1300 DEG C after KR desulfurizing iron, the molten steel sulfur content [S]≤0.003% after process;
(2) converter terminal controls: converter terminal composition C=0.07-0.10%, Si≤0.01%, S≤0.010%, P≤0.012%, terminal temperature 1640 ~ 1660 DEG C; A smelting process catch carbon operation, blows operation without point;
(3) deoxidation alloying: adopt aluminium ferromanganese and high carbon ferromanganese deoxidation alloying, aluminum steel is disposable to add;
(4) LF refining: the refining slag and the shallow process of submerged arc slag that use low silicon content, LF refining time, in 50 minutes, adds ferrotianium after heating terminates, makes Ti content >=3.4N+1.5S; Carry out Ca process after refining treatment, after Ca process, in steel, Ca, Al mass ratio is 0.09 ~ 0.14; First stove out-station temperature 1585 DEG C ~ 1595 DEG C, other heat out-station temperature 1585 DEG C ~ 1590 DEG C;
(5) continuous casting: adopt whole process protection pouring technology, large bag automatic casting, not in slag situation, adds low-carbon (LC) insulating covering agent in tundish, increases the argon flow amount of argon envelope to 40-70L/min;
(6) slow cooling, heating: to continuously cast bloom stacking slow cooling 48 hours, heat afterwards, heat-up time 3.5-4.5 hour, tapping temperature 1120-1180 DEG C after heating;
(7) rolling: continuously cast bloom heats the de-scaling of laggard horizontal high voltage water, plate mill start rolling temperature 1050 ~ 1090 DEG C, the percentage pass reduction of hot stage previous three passes is greater than 20%, and last pass is 6-8 passage, and finish rolling finishing temperature control is at 850-880 DEG C.
2. one punching weldering axle housing steel plate according to claim 1, it is characterized in that, steel plate chemical composition content is by weight percentage: carbon 0.17%, silicon 0.04%, manganese 1.55%, phosphorus 0.010%, sulphur 0.003%, niobium 0.035%, vanadium 0.040%, titanium 0.025%, aluminium 0.028%, carbon equivalent 0.44%, surplus is iron and inevitable impurity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310399097.3A CN103422020B (en) | 2013-09-05 | 2013-09-05 | Steel plate for punching-welding axle housing and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310399097.3A CN103422020B (en) | 2013-09-05 | 2013-09-05 | Steel plate for punching-welding axle housing and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103422020A CN103422020A (en) | 2013-12-04 |
| CN103422020B true CN103422020B (en) | 2015-05-20 |
Family
ID=49647404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310399097.3A Expired - Fee Related CN103422020B (en) | 2013-09-05 | 2013-09-05 | Steel plate for punching-welding axle housing and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103422020B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104695410B (en) * | 2015-03-03 | 2017-04-12 | 山东钢铁股份有限公司 | Super-thick semi-chord plate section steel for offshore petroleum machinery as well as preparation method and application of super-thick semi-chord plate section steel |
| CN106244919A (en) * | 2016-08-03 | 2016-12-21 | 唐山钢铁集团有限责任公司 | A kind of low-alloy high-strength punching press axle shell steel and production method thereof |
| CN110029287A (en) * | 2019-05-07 | 2019-07-19 | 南京钢铁股份有限公司 | A kind of production method improving Wide and Heavy Plates surface quality |
| CN111235460B (en) * | 2020-02-12 | 2021-08-17 | 首钢集团有限公司 | Axle housing steel suitable for induction heating and production method thereof |
| CN111763878A (en) * | 2020-05-29 | 2020-10-13 | 河北普阳钢铁有限公司 | Production method of 6mm S355JR steel plate |
| CN116145037B (en) * | 2023-02-20 | 2024-01-23 | 盐城永鑫机械有限公司 | High strength agricultural machinery axle housing |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102260824A (en) * | 2010-05-25 | 2011-11-30 | 宝山钢铁股份有限公司 | Hot-rolled steel plate with yield strength of 550 MPa for hot forming and manufacturing method thereof |
| CN102286691A (en) * | 2011-09-07 | 2011-12-21 | 柳州钢铁股份有限公司 | Steel plate for automobile axle housing and production method thereof |
| CN102864384A (en) * | 2012-08-31 | 2013-01-09 | 中国重汽集团济南动力有限公司 | High-strength automobile axle housing material and method for manufacturing axle housing |
| CN103131956A (en) * | 2013-03-15 | 2013-06-05 | 济钢集团有限公司 | High-strength steel plate with tensile strength of 800 MPa above and manufacturing method thereof |
-
2013
- 2013-09-05 CN CN201310399097.3A patent/CN103422020B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102260824A (en) * | 2010-05-25 | 2011-11-30 | 宝山钢铁股份有限公司 | Hot-rolled steel plate with yield strength of 550 MPa for hot forming and manufacturing method thereof |
| CN102286691A (en) * | 2011-09-07 | 2011-12-21 | 柳州钢铁股份有限公司 | Steel plate for automobile axle housing and production method thereof |
| CN102864384A (en) * | 2012-08-31 | 2013-01-09 | 中国重汽集团济南动力有限公司 | High-strength automobile axle housing material and method for manufacturing axle housing |
| CN103131956A (en) * | 2013-03-15 | 2013-06-05 | 济钢集团有限公司 | High-strength steel plate with tensile strength of 800 MPa above and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103422020A (en) | 2013-12-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103422020B (en) | Steel plate for punching-welding axle housing and manufacturing method thereof | |
| CN107338393B (en) | A kind of yield strength is greater than 1400MPa ultra-high strength steel plate and its production method | |
| CN101805873B (en) | Low-cost and high-strength steel for automobile crossbeam and manufacturing method thereof | |
| CN102277540B (en) | igh temperature PWHT softening and production method thereof | |
| CN110079740B (en) | High-toughness hot-rolled 530 MPa-grade automobile cold-stamped axle housing steel plate and manufacturing method thereof | |
| CN108914006B (en) | Ultrahigh-strength quenched and tempered steel plate with excellent performance in thickness direction and manufacturing method thereof | |
| CN102925794B (en) | Cold-rolled steel strip for double-layer welded tube and its manufacture mathod | |
| CN101928885B (en) | Hydrothion corrosion resistant pipe steel and production method thereof | |
| CN103510008A (en) | Hot rolling ferrite/bainite high strength steel plate and manufacturing method thereof | |
| CN105506494A (en) | High-toughness hot-rolled high-strength steel with yield strength being 800 MPa and manufacturing method of high-toughness hot-rolled high-strength steel | |
| CN101824581B (en) | High-yield strength (450MPa), high-strength and weather-resistant steel plate and production method thereof | |
| CN102345066B (en) | Steel used for pressure container and preparation method thereof | |
| CN107151763A (en) | The high-strength cold-formed use hot rolled strip of Thin Specs and its production method | |
| CN104988390A (en) | E-level extra-thick high-intensity steel plate produced by using continuous casting billet and production method thereof | |
| CN101660086A (en) | Light and high-performance twin crystal induced plasticity steel and preparation method thereof | |
| CN105908086A (en) | Extremely-thick low-alloy steel plate with low compression ratio and preparation method thereof | |
| CN107904501A (en) | A kind of good high intensity Thin Specs wheel of anti-fatigue performance is used and production method | |
| CN102127706A (en) | High-strength long-fatigue life wheel steel used for heavy truck and manufacturing method thereof | |
| CN114107792A (en) | 780 MPa-grade high-surface ultrahigh-hole-expansion steel and manufacturing method thereof | |
| CN102876970A (en) | Steel with yield strength larger than or equal to 390 MPa for high-rise buildings and production method of steel | |
| CN103160743A (en) | High-cleanliness medium carbon axle steel and preparation method thereof | |
| CN104342601A (en) | Ti-containing low-manganese and low-silicon hot-rolled steel with Rel being greater than or equal to 400MPa and production method adopting CSP (cast steel plate) | |
| CN109161806A (en) | A kind of 700MPa grades of automotive frame steel band and preparation method thereof | |
| CN106244919A (en) | A kind of low-alloy high-strength punching press axle shell steel and production method thereof | |
| CN109518074A (en) | A kind of economical high tenacity 800MPa grades of beam steels and its production method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150520 Termination date: 20180905 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |