CN104087873A - Automobile skylight reinforcing plate - Google Patents
Automobile skylight reinforcing plate Download PDFInfo
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- CN104087873A CN104087873A CN201410332987.7A CN201410332987A CN104087873A CN 104087873 A CN104087873 A CN 104087873A CN 201410332987 A CN201410332987 A CN 201410332987A CN 104087873 A CN104087873 A CN 104087873A
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- stiffening plate
- vehicular skylight
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- iron
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Abstract
The invention relates to an automobile skylight reinforcing plate which is characterized by comprising the following components in percentage by weight: 13-20% of C, 10-15% of Si, 10-15% of Mn, less than or equal to 1% of P, less than or equal to 1% of S, 2-6% of Alt, 0.5-1.5% of Cr, 2-5% of V, 2-4% of N and the balance of Fe and residual trace impurities.
Description
Technical field
The present invention relates to a kind of stiffening plate, particularly a kind of Vehicular skylight stiffening plate, belongs to technical field of automobile components.
Background technology
Progress with rapid changepl. never-ending changes and improvements along with scientific and technological development and industry, China Automobile Industry is more and more rapider, the development of automotive engineering requires more and more higher to the structure properties of component, automobile-used stiffening plate is one of major critical component affecting vehicle safety travel, is also the important factor that affects vehicle performance simultaneously.In prior art, stiffening plate is various, but all has following problem, 1) poor impact resistance; 1) poor heat resistance, winter hardiness are poor, can not environmental facies to severe condition under life-time service, 3) weathering resistance is poor; 4) flame resistivity is poor, and when spontaneous combustion appears in vehicle or cause vehicle to occur case of fire due to other extraneous reasons, the flame resistivity of vehicle stiffening plate is poor; 5) in the collision of car load, tumbling test, quadrilateral structure due to skylight self, can not effectively guide, resist external force, thereby cannot must guarantee complete vehicle quality to greatest extent, rigidity, the intensity of whole reinforcement plank are poor, based on the problems referred to above, those skilled in the art is constantly attempting change always, but effect is undesirable, therefore, a kind of new technical scheme of exigence addresses the above problem.
Summary of the invention
The present invention, just for the technical problem existing in prior art, provides a kind of Vehicular skylight stiffening plate and working method thereof, and this stiffening plate has overcome above-mentioned technological deficiency, is convenient to promote the use of on a large scale.
To achieve these goals, the technical solution used in the present invention is as follows, a kind of Vehicular skylight stiffening plate, it is characterized in that, composition and the content of described stiffening plate are as follows, C13%-20%, Si 10%-15%, Mn 10%-15%, P≤1%, S≤1%, Alt2-6%, Cr0.5%-1.5%, V2-5%, N2%-4%, surplus is iron and remaining trace impurity.
As a modification of the present invention, composition and the content of described stiffening plate are as follows, C15%-18%, Si 12%-14%, Mn 12%-14%, P≤0.5%, S≤0.5%, Alt3-5%, Cr1%-1.2%, V3-4%, N2.5%-3.5%, surplus is iron and remaining trace impurity.
A working method for Vehicular skylight stiffening plate, said method comprising the steps of, 1) material is prepared and is confirmed, confirms that sending into process furnace after errorless heats, 2) coiled sheet after heating is placed on machine; 3) on, wind off volume; 4) leader, smoothing, 5) rinse 6) discharging, upset, 8) inspection after construction packing.
As a modification of the present invention, in described step 2, the linear velocity of machine is≤25mm/min.
As a modification of the present invention, temperature in described step 1 in process furnace is 500 ℃～800 ℃, stiffening plate come out of the stove after in the time of 700 ℃ through the rolling of roughing unit, before entering finishing mill, De-scaling box is removed the iron scale producing in rough rolling process, then finishing train rolling, carry out laminar flow cooling after, by reeling machine, be rolled into coil of strip, controlled rolling temperature.
As a modification of the present invention, in described step 1, finishing temperature is set as 300 ℃～400 ℃, 300 ℃～350 ℃ of coiling temperatures.
As a modification of the present invention, composition and the content of described stiffening plate are as follows, C17%, and Si 13%, and Mn 13%, P0.5%, S0.5%, Alt4%, Cr1%, V3%, N2.5%, surplus is iron and remaining trace impurity.
The common element adopting in technique scheme, does not particularly add precious alloy element, only by suitable Si, improves intensity, solves difficult the removing and surface quality problems of the high iron scale causing of Si, makes stiffening plate have high strong plasticity, high surface quality.
In order to reduce production costs, in the technical program, do not add the alloying elements such as Nb, Ti, but adopt lower alloying element Mn, and improve intensity by appropriate more cheap silicon addition, by the reasonable coordination of related production technique, solve Si and improve the scale on surface problem causing, the strength and toughness and the surface quality that make product, all meet existing standard-required, in technique scheme, why arranges like this, specifically the reasons are as follows
C: can improve carbon content, favourable to room temperature strength and the medium temperature intensity of raising steel, but all unfavorable to the plasticity of steel, toughness, formability, weldability, therefore carbon content control is unsuitable too high, the present invention selects C13%-20%.
Si: can there is purify hot metal, reductor, Si has very strong solution strengthening effect after being dissolved in ferrite, and every increase 0.15%Si in carbon steel can make the tensile strength of hot-rolled steel improve 8～9MPa, and yield strength improves 5～6MPa.Content in the technical program is 10%-15%.
Mn: improve manganese content in steel, can expand γ district, reduce γ → α transition temperature, expand rolling scope, the chance of growing up of ferrite crystal grain is greatly reduced, thereby promoted grain refining, increase the obdurability of steel, but manganese content is high, the cost of the corresponding increase steel of meeting, also can increase carbon equivalent, be unfavorable for welding, the content in the technical program is Mn 10%-15%.
S: sulphur forms sulfide inclusion in steel, makes its ductility and toughness drop.During steel rolling, because MnS is mingled with along with rolling direction is extended, the anisotropy of steel is increased the weight of, when serious, causing Laminated steel, the content in the technical program is P≤1%,
P: the high cold shortness that increases steel of phosphorus, make the brittle transition temperature of steel increase, the impelling strength of steel is significantly declined, the content in the technical program is S≤1%.
Alt: in the present invention, Al mainly contains two effects, the first is as the reductor of carbon aluminium-killed steel, and for guaranteeing deoxidation effect, Alt content is not less than 2%; Its two, for solid N, in order to improve the ageing resistance energy of material, must contain the Al of q.s, to produce AlN with the N in steel, but Alt too high levels, easy nozzle clogging problem in casting cycle, and easily form Al
2o
3non-metallic inclusion.Preferable range is 2～6%.
Cr: in the present invention, Cr is as important carbide forming element, be used for the fixedly C element of steel, to improve the ageing resistance performance of material, but Cr is as a kind of alloying element, along with the increase of content can cause cost to increase, and during too high levels, the intensity of steel can obviously raise, and therefore limits Cr content 0.5～1.5%.
V: in the present invention, V as with the similar effect of Cr, user is C, the N element in steel fixedly, V-arrangement becomes in addition carbon, nitrogen compound are favourable to the toughness of steel, meanwhile, during its too high levels, the intensity of steel can obviously raise, limiting its scope is 2～5%.Preferable range 2～4%.
N:N is also the principal element that causes material timeliness, belong in the present invention the element as far as possible reducing, but N content is lower, and it is larger that difficulty is controlled in steel-making, considers, and limits N content 2%～4%.
With respect to prior art, the advantage of the technical program is as follows: 1) shock-resistance strengthens, and the surging force maximum of stiffening plate can reach 8kg/cm, with also flawless under the following two meters of pendants of 5kg hammer; 2) weathering resistance improves, and there is the coextruded layer of antiultraviolet on surface, can prevent the tired flavescence of resin that solar ultraviolet causes, 3) flame resistivity improves, the not spontaneous combustion of stiffening plate itself described in this technical scheme the self-extinguishing having.Meet the ROHS of European Union instruction and strict UL safety standard, UL94 fire-protection rating reaches V0 level, V2 level, HB level; 4) thermotolerance, winter hardiness improve, and in Celsius-10, ℃ to+110 ℃ of temperature ranges, can not cause the quality badnesses such as distortion, in the time of 105 ℃, do not soften, and its mechanics in rugged environment, mechanical propertys etc. have no significant change; 5) in the collision of car load, tumbling test, can effectively guide, resist external force.
Embodiment
In order to deepen the understanding of the present invention and understanding, below in conjunction with embodiment, the invention will be further described and introduction.
embodiment 1: a kind of Vehicular skylight stiffening plate, composition and the content of described stiffening plate are as follows, C13%-20%, Si 10%-15%, Mn 10%-15%, P≤1%, S≤1%, Alt2-6%, Cr0.5%-1.5%, V2-5%, N2%-4%, surplus is iron and remaining trace impurity.Be preferably, composition and the content of described stiffening plate are as follows, C15%-18%, and Si 12%-14%, Mn 12%-14%, P≤0.5%, S≤0.5%, Alt3-5%, Cr1%-1.2%, V3-4%, N2.5%-3.5%, surplus is iron and remaining trace impurity.Be preferably, composition and the content of described stiffening plate are as follows, C17%, and Si 13%, and Mn 13%, P0.5%, S0.5%, Alt4%, Cr1%, V3%, N2.5%, surplus is iron and remaining trace impurity.
embodiment 2: a kind of working method of Vehicular skylight stiffening plate, said method comprising the steps of 1) material prepares and confirms, confirms that sending into process furnace after errorless heats, 2) coiled sheet after heating is placed on machine; 3) on, wind off volume; 4) leader, smoothing, 5) rinse 6) discharging, upset, 8) inspection after construction packing; In described step 2, the linear velocity of machine is≤25mm/min.
Temperature in described step 1 in process furnace is 500 ℃～800 ℃, stiffening plate come out of the stove after in the time of 700 ℃ through the rolling of roughing unit, before entering finishing mill, De-scaling box is removed the iron scale producing in rough rolling process, then finishing train rolling, carry out laminar flow cooling after, by reeling machine, be rolled into coil of strip, controlled rolling temperature.In described step 1, finishing temperature is set as 300 ℃～400 ℃, 300 ℃～350 ℃ of coiling temperatures.
It should be noted that above-described embodiment, be not used for limiting protection scope of the present invention, the equivalents of having done on the basis of technique scheme or substitute and all to fall into the scope that the claims in the present invention are protected.
Claims (7)
1. a Vehicular skylight stiffening plate, is characterized in that, composition and the content of described stiffening plate are as follows, C13%-20%, Si 10%-15%, Mn 10%-15%, P≤1%, S≤1%, Alt2-6%, Cr0.5%-1.5%, V2-5%, N2%-4%, surplus is iron and remaining trace impurity.
2. Vehicular skylight stiffening plate according to claim 1, is characterized in that, composition and the content of described stiffening plate are as follows, C15%-18%, Si 12%-14%, Mn 12%-14%, P≤0.5%, S≤0.5%, Alt3-5%, Cr1%-1.2%, V3-4%, N2.5%-3.5%, surplus is iron and remaining trace impurity.
3. Vehicular skylight stiffening plate according to claim 1 and 2, is characterized in that, said method comprising the steps of 1) material prepares and confirms, confirms that sending into process furnace after errorless heats, 2) coiled sheet after heating is placed on machine; 3) on, wind off volume; 4) leader, smoothing, 5) rinse 6) discharging, upset, 8) inspection after construction packing.
4. Vehicular skylight stiffening plate according to claim 3, is characterized in that, in described step 2, the linear velocity of machine is≤25mm/min.
5. Vehicular skylight stiffening plate according to claim 4, it is characterized in that, temperature in described step 1 in process furnace is 500 ℃～800 ℃, stiffening plate come out of the stove after in the time of 700 ℃ through the rolling of roughing unit, enter De-scaling box before finishing mill and remove the iron scale producing in rough rolling process, then finishing train rolling, carry out laminar flow cooling after, by reeling machine, be rolled into coil of strip, controlled rolling temperature.
6. Vehicular skylight stiffening plate according to claim 5, is characterized in that, in described step 1, finishing temperature is set as 300 ℃～400 ℃, 300 ℃～350 ℃ of coiling temperatures.
7. Vehicular skylight stiffening plate according to claim 5, is characterized in that, composition and the content of described stiffening plate are as follows, C17%, and Si 13%, and Mn 13%, P0.5%, S0.5%, Alt4%, Cr1%, V3%, N2.5%, surplus is iron and remaining trace impurity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410332987.7A CN104087873A (en) | 2014-07-14 | 2014-07-14 | Automobile skylight reinforcing plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410332987.7A CN104087873A (en) | 2014-07-14 | 2014-07-14 | Automobile skylight reinforcing plate |
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| CN104087873A true CN104087873A (en) | 2014-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410332987.7A Pending CN104087873A (en) | 2014-07-14 | 2014-07-14 | Automobile skylight reinforcing plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110509012A (en) * | 2019-08-30 | 2019-11-29 | 新程汽车工业有限公司 | The processing technology of new automobile protective plate |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006328460A (en) * | 2005-05-25 | 2006-12-07 | Japan Steel Works Ltd:The | Base material for clad steel, and method for producing clad steel using the base material for clad steel |
| CN101092674A (en) * | 2007-07-20 | 2007-12-26 | 山东滨州渤海活塞股份有限公司 | Nitrogen contained austenitic cast iron in use for beset ring of piston |
| JP2008075108A (en) * | 2006-09-20 | 2008-04-03 | Jfe Steel Kk | Casting for wear-resistant member, and manufacturing method therefor |
| CN101838772A (en) * | 2009-03-19 | 2010-09-22 | 新日铁住金不锈钢株式会社 | The martensitic stainless steel of excellent corrosion resistance |
-
2014
- 2014-07-14 CN CN201410332987.7A patent/CN104087873A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006328460A (en) * | 2005-05-25 | 2006-12-07 | Japan Steel Works Ltd:The | Base material for clad steel, and method for producing clad steel using the base material for clad steel |
| JP2008075108A (en) * | 2006-09-20 | 2008-04-03 | Jfe Steel Kk | Casting for wear-resistant member, and manufacturing method therefor |
| CN101092674A (en) * | 2007-07-20 | 2007-12-26 | 山东滨州渤海活塞股份有限公司 | Nitrogen contained austenitic cast iron in use for beset ring of piston |
| CN101838772A (en) * | 2009-03-19 | 2010-09-22 | 新日铁住金不锈钢株式会社 | The martensitic stainless steel of excellent corrosion resistance |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110509012A (en) * | 2019-08-30 | 2019-11-29 | 新程汽车工业有限公司 | The processing technology of new automobile protective plate |
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Application publication date: 20141008 |