CN105349881A - Preparing method of strip steel for volute spiral spring - Google Patents
Preparing method of strip steel for volute spiral spring Download PDFInfo
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- CN105349881A CN105349881A CN201510776428.XA CN201510776428A CN105349881A CN 105349881 A CN105349881 A CN 105349881A CN 201510776428 A CN201510776428 A CN 201510776428A CN 105349881 A CN105349881 A CN 105349881A
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Abstract
The invention belongs to the field of strip steel preparation, and particularly relates to a preparing method of strip steel for a volute spiral spring. The method includes the steps of burdening, carbon, silicon, manganese, chromium, nickel, copper, phosphorus and sulphur selecting, and alloy compositions calculating, wherein the composition elements comprise, by weight percentage, 0.48% to 0.76% of carbon, 1.52% to 2.15% of silicon, 0.52% to 1.03% of manganese, 0.05% to 0.45% of chromium, 0.05% to 0.45% of nickel, smaller than 0.34% of copper, smaller than 0.039% of phosphorus, smaller than 0.039% of sulphur, and the balance iron. As the nickel is added into the formula, the strip steel intensity can be improved, the cooling speed can be effectively decreased, and the permeability is improved.
Description
Technical field
The invention belongs to band steel preparation field, particularly a kind of band steel Preparation Method for scroll spring.
Background technology
Carbon, manganese, silicon, chromium etc. are only added in the formula that scroll spring uses mostly at present.Such formula can meet the demand of current scroll spring, but such formula intensity is lower slightly, and speed of cooling is too fast, poor permeability.
Summary of the invention
For solving the problem, the object of the present invention is to provide a kind of band steel Preparation Method for scroll spring.
For achieving the above object, technical scheme of the present invention is:
For a band steel Preparation Method for scroll spring, comprise the following steps:
(1) prepare burden, select carbon, silicon, manganese, chromium, nickel, copper, phosphorus, sulphur, calculate alloy composition, it is made elementary compositionly to meet following weight percent, carbon 0.48 ~ 0.76%, silicon 1.52 ~ 2.15%, manganese 0.52 ~ 1.03%, chromium 0.05 ~ 0.45%, nickel 0.05 ~ 0.45%, copper < 0.34%, phosphorus < 0.039%, sulphur < 0.039%, surplus is iron.
(2) melting, according to first manganese addition, nickel, rear chromatize, copper, smelting temperature is between 1100 ~ 1800 DEG C;
(3) interpolation sulphur, phosphorus carry out melting;
(4) refining deslagging, adds charcoal and covers bath surface, make Reduction of Oxide, limpid to melt, adds silicon;
(5) be shaped, cooling;
(6) Heating temperature 450 DEG C, 2 hours time length;
(7) first time dephosphorization;
(8) Heating temperature 660 DEG C, 15 hours time length;
(9) roughing;
(10) second time dephosphorization;
(11) finish rolling;
(12) layer is cold, batches, bundling.
Preferably, described elementary composition weight percent is carbon 0.53 ~ 0.73%, silicon 1.60 ~ 2.05%, manganese 0.57 ~ 0.98%, chromium 0.1 ~ 0.4%, nickel 0.1 ~ 0.4%, copper < 0.3%, phosphorus < 0.035%, sulphur < 0.035%, surplus is iron.
Preferably, described elementary composition weight percent is carbon 0.58 ~ 0.66%, silicon 1.72 ~ 1.95%, manganese 0.68 ~ 0.81%, chromium 0.15 ~ 0.32%, nickel 0.15 ~ 0.32%, copper < 0.28%, phosphorus < 0.028%, sulphur < 0.028%, surplus is iron.
Preferably, described elementary composition weight percent is carbon 0.61%, silicon 1.83%, manganese 0.72%, chromium 0.25%, nickel 0.25%, copper < 0.23%, phosphorus < 0.022%, sulphur < 0.022%, surplus is iron.
Preferably, described smelting temperature is 1200-1700 DEG C.
Preferably, described smelting temperature is 1300-1600 DEG C.
Preferably, described smelting temperature is 1500 DEG C.
Compared with prior art, beneficial effect of the present invention is as follows: in formula, add nickel, can improve band hardness of steel, also effectively can reduce speed of cooling, improves perviousness.
Accompanying drawing explanation
Fig. 1 is the flow chart of steps of the preparation method of the band steel for scroll spring of the embodiment of the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
On the contrary, the present invention is contained any by the substituting of making on marrow of the present invention and scope of defining of claim, amendment, equivalent method and scheme.Further, in order to make the public have a better understanding to the present invention, in hereafter details of the present invention being described, detailedly describe some specific detail sections.Do not have the description of these detail sections can understand the present invention completely for a person skilled in the art yet.
See Fig. 1, be depicted as the preparation method of a kind of band steel for scroll spring of the embodiment of the present invention, it is characterized in that, comprise the following steps:
(1) prepare burden, select carbon, silicon, manganese, chromium, vanadium, nickel, copper, phosphorus, sulphur, calculate alloy composition, it is made elementary compositionly to meet following weight percent, carbon 0.48 ~ 0.76%, silicon 1.52 ~ 2.15%, manganese 0.52 ~ 1.03%, chromium 0.05 ~ 0.45%, nickel 0.05 ~ 0.45%, copper < 0.34%, phosphorus < 0.039%, sulphur < 0.039%, surplus is iron.
(2) melting, according to first manganese addition, nickel, rear chromatize, vanadium, copper, smelting temperature is between 1100 ~ 1800 DEG C;
(3) interpolation sulphur, phosphorus carry out melting;
(4) refining deslagging, adds charcoal and covers bath surface, make Reduction of Oxide, limpid to melt, adds silicon;
(5) be shaped, cooling;
(6) Heating temperature 450 DEG C, 2 hours time length;
(7) first time dephosphorization;
(8) Heating temperature 660 DEG C, 15 hours time length;
(9) roughing;
(10) second time dephosphorization;
(11) finish rolling;
(12) layer is cold, batches, bundling.
The implementation process of the embodiment of the present invention is described below by way of embody rule example.
Embodiment 1
(1) prepare burden
In strict accordance with charge calculation, take carbon 0.48KG, silicon 1.52KG, manganese 0.52KG, chromium 0.05KG, nickel 0.05KG, copper 0.34KG, phosphorus 0.039KG, sulphur 0.039KG, iron 96.962KG.Make to consist of in batching: carbon 0.48%, silicon 1.52%, manganese 0.52%, chromium 0.05%, nickel 0.05%, copper 0.34%, phosphorus 0.039%, sulphur 0.039%, iron 96.962%.
(2) reinforced melting
According to first manganese addition, nickel, rear chromatize, copper, smelting temperature is at 1100 DEG C.
(3) interpolation sulphur, phosphorus carry out melting.
(4) refining deslagging, adds charcoal and covers bath surface, make Reduction of Oxide, limpid to melt, adds silicon.
(5) be shaped, cooling.
(6) Heating temperature 450 DEG C, 2 hours time length.
(7) first time dephosphorization.
(8) Heating temperature 660 DEG C, 15 hours time length.
(9) roughing.
(10) second time dephosphorization.
(11) finish rolling.
(12) layer is cold, batches, bundling.
The sintered bearing material use properties detection table of the product prepared by above embodiment is as follows:
| Tensile strength (MPa) | 520 |
| Metallographic nodulizing grade | 3 grades |
| Speed of cooling (DEG C/S) | 0.93℃/S |
Embodiment 2
(1) prepare burden
In strict accordance with charge calculation, take carbon 0.76KG, silicon 2.15KG, manganese 1.03KG, chromium 0.45KG, nickel 0.45KG, copper 0.34KG, phosphorus 0.039KG, sulphur 0.039KG, iron 94.742KG.Make to consist of in batching: carbon 0.76%, silicon 2.15%, manganese 1.03%, chromium 0.45%, nickel 0.45%, copper 0.34%, phosphorus 0.039%, sulphur 0.039%, iron 94.742%.
(2) reinforced melting
According to first manganese addition, nickel, rear chromatize, vanadium, copper, smelting temperature is at 1800 DEG C.
(3) interpolation sulphur, phosphorus carry out melting.
(4) refining deslagging, adds charcoal and covers bath surface, make Reduction of Oxide, limpid to melt, adds silicon.
(5) be shaped, cooling.
(6) Heating temperature 450 DEG C, 2 hours time length.
(7) first time dephosphorization.
(8) Heating temperature 660 DEG C, 15 hours time length.
(9) roughing.
(10) second time dephosphorization.
(11) finish rolling.
(12) layer is cold, batches, bundling.
The sintered bearing material use properties detection table of the product prepared by above embodiment is as follows:
| Tensile strength (MPa) | 531 |
| Metallographic nodulizing grade | 3 grades |
| Speed of cooling (DEG C/S) | 0.82℃/S |
Embodiment 3
(1) prepare burden
In strict accordance with charge calculation, take carbon 0.53KG, silicon 1.60KG, manganese 0.57KG, chromium 0.1KG, nickel 0.1KG, copper 0.1KG, phosphorus 0.014KG, sulphur 0.014KG, iron 96.972KG.Make to consist of in batching: carbon 0.53%, silicon 1.60%, manganese 0.57%, chromium 0.1%, nickel 0.1%, copper 0.1%, phosphorus 0.014%, sulphur 0.014%, iron 96.972%.
(2) reinforced melting
According to first manganese addition, nickel, rear chromatize, vanadium, copper, smelting temperature is at 1200 DEG C.
(3) interpolation sulphur, phosphorus carry out melting.
(4) refining deslagging, adds charcoal and covers bath surface, make Reduction of Oxide, limpid to melt, adds silicon.
(5) be shaped, cooling.
(6) Heating temperature 450 DEG C, 2 hours time length.
(7) first time dephosphorization.
(8) Heating temperature 660 DEG C, 15 hours time length.
(9) roughing.
(10) second time dephosphorization.
(11) finish rolling.
(12) layer is cold, batches, bundling.
The sintered bearing material use properties detection table of the product prepared by above embodiment is as follows:
| Tensile strength (MPa) | 538 |
| Metallographic nodulizing grade | 3 grades |
| Speed of cooling (DEG C/S) | 0.78℃/S |
Embodiment 4
(1) prepare burden
In strict accordance with charge calculation, take carbon 0.73KG, silicon 2.05KG, manganese 0.98KG, chromium 0.4KG, nickel 0.4KG, copper 0.3KG, phosphorus 0.035KG, sulphur 0.035KG, iron 95.07KG.Make to consist of in batching: carbon 0.73%, silicon 2.05%, manganese 0.98%, chromium 0.4%, nickel 0.4%, copper 0.3%, phosphorus 0.035%, sulphur 0.035%, iron 95.07%.
(2) reinforced melting
According to first manganese addition, nickel, rear chromatize, vanadium, copper, smelting temperature is at 1700 DEG C.
(3) interpolation sulphur, phosphorus carry out melting.
(4) refining deslagging, adds charcoal and covers bath surface, make Reduction of Oxide, limpid to melt, adds silicon.
(5) be shaped, cooling.
(6) Heating temperature 450 DEG C, 2 hours time length.
(7) first time dephosphorization.
(8) Heating temperature 740 DEG C, 15 hours time length.
(9) roughing.
(10) second time dephosphorization.
(11) finish rolling.
(12) layer is cold, batches, bundling.
The sintered bearing material use properties detection table of the product prepared by above embodiment is as follows:
| Tensile strength (MPa) | 545 |
| Metallographic nodulizing grade | 3 grades |
| Speed of cooling (DEG C/S) | 0.75℃/S |
Embodiment 5
(1) prepare burden
In strict accordance with charge calculation, take carbon 0.58KG, silicon 1.72KG, manganese 0.68KG, chromium 0.15KG, nickel 0.15KG, copper 0.15KG, phosphorus 0.019KG, sulphur 0.019KG, iron 96.532KG.Make to consist of in batching: carbon 0.58%, silicon 1.72%, manganese 0.68%, chromium 0.15%, nickel 0.15%, copper 0.15%, phosphorus 0.019%, sulphur 0.019%, iron 96.532%.
(2) reinforced melting
According to first manganese addition, nickel, rear chromatize, vanadium, copper, smelting temperature is at 1300 DEG C.
(3) interpolation sulphur, phosphorus carry out melting.
(4) refining deslagging, adds charcoal and covers bath surface, make Reduction of Oxide, limpid to melt, adds silicon.
(5) be shaped, cooling.
(6) Heating temperature 450 DEG C, 2 hours time length.
(7) first time dephosphorization.
(8) Heating temperature 660 DEG C, 15 hours time length.
(9) roughing.
(10) second time dephosphorization.
(11) finish rolling.
(12) layer is cold, batches, bundling.
The sintered bearing material use properties detection table of the product prepared by above embodiment is as follows:
| Tensile strength (MPa) | 550 |
| Metallographic nodulizing grade | 3 grades |
| Speed of cooling (DEG C/S) | 0.72℃/S |
Embodiment 6
(1) prepare burden
In strict accordance with charge calculation, take carbon 0.66KG, silicon 1.95KG, manganese 0.81KG, chromium 0.32KG, nickel 0.32KG, copper 0.28KG, phosphorus 0.028KG, sulphur 0.028KG, iron 95.604KG.Make to consist of in batching: carbon 0.66%, silicon 1.95%, manganese 0.81%, chromium 0.32%, nickel 0.32%, copper 0.28%, phosphorus 0.028%, sulphur 0.028%, iron 95.604%.
(2) reinforced melting
According to first manganese addition, nickel, rear chromatize, vanadium, copper, smelting temperature is at 1600 DEG C.
(3) interpolation sulphur, phosphorus carry out melting.
(4) refining deslagging, adds charcoal and covers bath surface, make Reduction of Oxide, limpid to melt, adds silicon.
(5) be shaped, cooling.
(6) Heating temperature 450 DEG C, 2 hours time length.
(7) first time dephosphorization.
(8) Heating temperature 660 DEG C, 15 hours time length.
(9) roughing.
(10) second time dephosphorization.
(11) finish rolling.
(12) layer is cold, batches, bundling.
The sintered bearing material use properties detection table of the product prepared by above embodiment is as follows:
| Tensile strength (MPa) | 558 |
| Metallographic nodulizing grade | 3 grades |
| Speed of cooling (DEG C/S) | 0.7℃/S |
Embodiment 7
(1) prepare burden
In strict accordance with charge calculation, take carbon 0.61KG, silicon 1.83KG, manganese 0.72KG, chromium 0.25KG, nickel 0.25KG, copper 0.23KG, phosphorus 0.022KG, sulphur 0.022KG, iron 96.066KG.Make to consist of in batching: carbon 0.61%, silicon 1.83%, manganese 0.72%, chromium 0.25%, nickel 0.25%, copper 0.23%, phosphorus 0.022%, sulphur 0.022%, iron 96.066%.
(2) reinforced melting
According to first manganese addition, nickel, rear chromatize, vanadium, copper, smelting temperature is at 1500 DEG C.
(3) interpolation sulphur, phosphorus carry out melting.
(4) refining deslagging, adds charcoal and covers bath surface, make Reduction of Oxide, limpid to melt, adds silicon.
(5) be shaped, cooling.
(6) Heating temperature 450 DEG C, 2 hours time length.
(7) first time dephosphorization.
(8) Heating temperature 660 DEG C, 15 hours time length.
(9) roughing.
(10) second time dephosphorization.
(11) finish rolling.
(12) layer is cold, batches, bundling.
The sintered bearing material use properties detection table of the product prepared by above embodiment is as follows:
| Tensile strength (MPa) | 560 |
| Metallographic nodulizing grade | 3 grades |
| Speed of cooling (DEG C/S) | 0.6℃/S |
Comparative example
(1) prepare burden
In strict accordance with charge calculation, take carbon 0.30KG, silicon 1.03KG, manganese 0.35KG, chromium 0.02KG, phosphorus 0.02KG, sulphur 0.02KG, iron 98.26KG.Make to consist of in batching: carbon 0.30%, silicon 1.03%, manganese 0.35%, chromium 0.02%, phosphorus 0.02%, sulphur 0.02%, iron 98.26%.
(2) reinforced melting
According to first manganese addition, nickel, rear chromatize, vanadium, copper, smelting temperature is at 1100 DEG C.
(3) interpolation sulphur, phosphorus carry out melting.
(4) refining deslagging, adds charcoal and covers bath surface, make Reduction of Oxide, limpid to melt, adds silicon.
(5) be shaped, cooling.
(6) Heating temperature 450 DEG C, 2 hours time length.
(7) roughing.
(8) dephosphorization.
(9) finish rolling.
(10) layer is cold, batches, bundling.
The sintered bearing material use properties detection table of the product prepared by above embodiment is as follows:
| Tensile strength (MPa) | 505 |
| Metallographic nodulizing grade | 2 grades |
| Speed of cooling (DEG C/S) | 1.2℃/S |
Can be found out by above comparative example, the production method that the present invention adopts can improve band hardness of steel, also effectively can reduce speed of cooling, and improve perviousness, the band steel making it produce is more suitable for scroll spring.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1., for a band steel Preparation Method for scroll spring, it is characterized in that, comprise the following steps:
(1) prepare burden, select carbon, silicon, manganese, chromium, nickel, copper, phosphorus, sulphur, calculate alloy composition, its component is made to meet following weight percent, carbon 0.48 ~ 0.76%, silicon 1.52 ~ 2.15%, manganese 0.52 ~ 1.03%, chromium 0.05 ~ 0.45%, nickel 0.05 ~ 0.45%, copper < 0.34%, phosphorus < 0.039%, sulphur < 0.039%, surplus is iron.
(2) melting, according to first manganese addition, nickel, rear chromatize, copper, smelting temperature is between 1100 ~ 1800 DEG C;
(3) interpolation sulphur, phosphorus carry out melting;
(4) refining deslagging, adds charcoal and covers bath surface, make Reduction of Oxide, limpid to melt, adds silicon;
(5) be shaped, cooling;
(6) Heating temperature 450 DEG C, 2 hours time length;
(7) first time dephosphorization;
(8) Heating temperature 660 DEG C, 15 hours time length;
(9) roughing;
(10) second time dephosphorization;
(11) finish rolling;
(12) layer is cold, batches, bundling.
2. the band steel Preparation Method for scroll spring according to claim 1, it is characterized in that, described elementary composition weight percent is carbon 0.53 ~ 0.73%, silicon 1.60 ~ 2.05%, manganese 0.57 ~ 0.98%, chromium 0.1 ~ 0.4%, nickel 0.1 ~ 0.4%, copper < 0.3%, phosphorus < 0.035%, sulphur < 0.035%, surplus is iron.
3. the band steel Preparation Method for scroll spring according to claim 1, it is characterized in that, described elementary composition weight percent is carbon 0.58 ~ 0.66%, silicon 1.72 ~ 1.95%, manganese 0.68 ~ 0.81%, chromium 0.15 ~ 0.32%, nickel 0.15 ~ 0.32%, copper < 0.28%, phosphorus < 0.028%, sulphur < 0.028%, surplus is iron.
4. the band steel Preparation Method for scroll spring according to claim 1, it is characterized in that, described elementary composition weight percent is carbon 0.61%, silicon 1.83%, manganese 0.72%, chromium 0.25%, nickel 0.25%, copper < 0.23%, phosphorus < 0.022%, sulphur < 0.022%, surplus is iron.
5. the band steel Preparation Method for scroll spring according to claim 1, it is characterized in that, described smelting temperature is 1200-1700 DEG C.
6. the band steel Preparation Method for scroll spring according to claim 1, it is characterized in that, described smelting temperature is 1300-1600 DEG C.
7. the band steel Preparation Method for scroll spring according to claim 1, it is characterized in that, described smelting temperature is 1500 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510776428.XA CN105349881A (en) | 2015-11-13 | 2015-11-13 | Preparing method of strip steel for volute spiral spring |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510776428.XA CN105349881A (en) | 2015-11-13 | 2015-11-13 | Preparing method of strip steel for volute spiral spring |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106947921A (en) * | 2017-03-20 | 2017-07-14 | 石家庄钢铁有限责任公司 | A kind of high-speed railway spring corrosion-resistant spring steel and its production method |
| CN108149146A (en) * | 2017-12-27 | 2018-06-12 | 苏州贝尔纳德铁路设备有限公司 | A kind of direct drive type electrohydraulic valve core of servo valve centering positions leaf spring |
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| CN103451535A (en) * | 2013-09-18 | 2013-12-18 | 济钢集团有限公司 | Hot continuous rolling plate strip steel for 510MPa automotive frame and production technology thereof |
| CN104480389A (en) * | 2015-01-05 | 2015-04-01 | 攀钢集团攀枝花钢铁研究院有限公司 | Hot rolled band for automotive axle housing and manufacturing method thereof |
| CN104928595A (en) * | 2015-07-07 | 2015-09-23 | 南京钢铁股份有限公司 | Band steel with good cold forming performance and for automobile structure and production process thereof |
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| CN1667151A (en) * | 2004-03-10 | 2005-09-14 | 杰富意钢铁株式会社 | High carbon hot-rolled steel sheet and method for manufacturing the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106947921A (en) * | 2017-03-20 | 2017-07-14 | 石家庄钢铁有限责任公司 | A kind of high-speed railway spring corrosion-resistant spring steel and its production method |
| CN108149146A (en) * | 2017-12-27 | 2018-06-12 | 苏州贝尔纳德铁路设备有限公司 | A kind of direct drive type electrohydraulic valve core of servo valve centering positions leaf spring |
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Application publication date: 20160224 |