CN109252103A - A kind of spring highly resistance steel wire and its processing method - Google Patents
A kind of spring highly resistance steel wire and its processing method Download PDFInfo
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- CN109252103A CN109252103A CN201811300422.5A CN201811300422A CN109252103A CN 109252103 A CN109252103 A CN 109252103A CN 201811300422 A CN201811300422 A CN 201811300422A CN 109252103 A CN109252103 A CN 109252103A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 71
- 239000010959 steel Substances 0.000 title claims abstract description 71
- 238000003672 processing method Methods 0.000 title claims abstract description 16
- 229910000639 Spring steel Inorganic materials 0.000 claims abstract description 22
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 10
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 10
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 9
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 8
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 8
- 229910052802 copper Inorganic materials 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 5
- 238000007689 inspection Methods 0.000 claims abstract description 5
- 238000009413 insulation Methods 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 239000007789 gas Substances 0.000 claims description 7
- 238000010791 quenching Methods 0.000 claims description 7
- 230000000171 quenching effect Effects 0.000 claims description 7
- 238000005496 tempering Methods 0.000 claims description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 abstract description 3
- 239000011651 chromium Substances 0.000 description 9
- 239000011572 manganese Substances 0.000 description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 229910052799 carbon Inorganic materials 0.000 description 8
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000010703 silicon Substances 0.000 description 5
- 239000005864 Sulphur Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 4
- 229910000851 Alloy steel Inorganic materials 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 238000005261 decarburization Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000002929 anti-fatigue Effects 0.000 description 2
- 229910052729 chemical element Inorganic materials 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 238000005087 graphitization Methods 0.000 description 2
- 150000004678 hydrides Chemical class 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 229910000734 martensite Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000010421 standard material Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- 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
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/525—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length for wire, for rods
-
- 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
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/20—Ferrous alloys, e.g. steel alloys containing chromium with copper
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
The invention discloses a kind of high tensile spring steel wires, it is related to spring steel field, the high tensile spring steel wire includes the chemical component of following mass percent: C 0.55%~0.6%, Si 1.4~1.6%, Mn 0.4%~0.8%, P≤0.025%, S≤0.02%, Cu≤0.12%, Cr 0.6%~0.85%, V 0.05%~0.2%, and surplus is Fe and inevitable impurity；The present invention also provides a kind of processing methods for preparing spring high tensile steel wire, the described method comprises the following steps: a. unwrapping wire；B. heating and thermal insulation；C. it quenches；D. it is tempered；E. nondestructive inspection；F. take-up；The spring steel wire tensile strength with higher being prepared by above-mentioned processing method can satisfy the force value demand of automobile power back door unlatching in the biggish situation of spring stress, reach higher safety coefficient.
Description
Technical field
The present invention relates to spring steel fields, more particularly to a kind of spring high tensile steel wire and its processing method.
Background technique
It is at present on the market the SiCr and SiCrV two of standard pull tension intensity applied to the steel wire of automobile power back door spring
Kind alloy-steel wire, such as European standard EN10270-2 (2012), Chinese Industrial Standards (CIS) GB/T 18983-2003, wherein SiCr steel alloy
The alloy composition content (mass percent) of silk are as follows: C 0.5%~0.6%, Si 1.2~1.6%, Mn 0.5%~
0.9%, P≤0.03%, S≤0.025%, Cu≤0.12%, Cr 0.5%~1.0%, tensile strength (Φ 3.0mm-4.0mm)
For 2060MPa-2080MPa；The alloy composition content (mass percent) of SiCrV alloy-steel wire are as follows: C 0.5%~
0.7%, Si 1.2~1.65%, Mn 0.4%~0.9%, P≤0.03%, S≤0.025%, Cu≤0.12%, Cr 0.5%
~0.7%, V 0.1%~0.25%, tensile strength (Φ 3.0mm-4.0mm) are 2060MPa-2260MPa.Above two standard
Material is only able to satisfy the demand of a small number of low stress springs since its tensile strength is relatively low, when spring stress is higher, bullet
Spring force value, which is unable to reach, sufficiently opens the desired required value of electric tail gate, to influence the open angle of electric tail gate；In addition,
Spring is formed by steel wire wound, itself can have biggish shear stress, will affect the heat of spring under long-term work state
The thermal stability of stability, spring is characterized by thermodynamic loss rate, the calculation formula of thermodynamic loss rate are as follows: thermodynamic loss rate=(examination
Test force value after preceding force value-test)/test before force value.It is evaluated by spring thermodynamic loss rate, i.e., spring is by simulating actual work
Condition reciprocating action 60,000 times, whether test spring is broken and thermodynamic loss rate, can learn the thermodynamic loss rate and shearing of spring
It is linear related between stress, that is, in the case that in spring, other require to be substantially the same, shear stress gets over big spring
Thermodynamic loss rate is bigger.And the stress of spring itself is determined by spring design, the safety coefficient of spring be spring stress with
The difference of tensile strength of wire improves tensile strength of wire so spring stress is constant, and safety coefficient can be improved, and extends bullet
Spring fatigue life.
Therefore, those skilled in the art is dedicated to developing the spring steel wire and its processing method of a kind of high-tensile,
It realizes the force value demand for still being able to meet automobile power back door unlatching in the biggish situation of spring stress, reaches higher safety
Coefficient reduces thermodynamic loss rate, extends fatigue life.
Summary of the invention
In view of the above drawbacks of the prior art, the technical problem to be solved by the present invention is to how higher in spring stress
In the case where improve its safety coefficient, reduce thermodynamic loss rate, extend spring fatigue life.
To achieve the above object, the present invention provides a kind of spring steel wire material, the spring steel wire material includes as follows
The chemical component of mass percent: C 0.55%~0.6%, Si 1.4~1.6%, Mn 0.4%~0.8%, P≤
0.025%, S≤0.02%, Cu≤0.12%, Cr 0.6%~0.85%, V 0.05%~0.2%, surplus are Fe and can not
The impurity avoided；It include H in the inevitable impurity.
Further, in the spring steel wire material H mass percent≤0.0001%.
Further, the present invention also provides a kind of processing method for being used to prepare spring high tensile steel wire, the bullets
Spring high tensile steel wire the described method comprises the following steps using spring steel wire material of any of claims 1 or 2 as raw material:
A. unwrapping wire；B. heating and thermal insulation；C. it quenches；D. it is tempered；E. nondestructive inspection；F. take-up.
Further, the temperature of the quenching is 840 DEG C~850 DEG C.
Further, the temperature of the tempering is 395 DEG C~405 DEG C.
Further, in the quenching process, nitrogen is filled with as protective gas.
Further, the present invention also provides a kind of spring high tensile steel wire, the spring high tensile steel wire passes through
Spring is used to prepare described in claim 3-6 to be made of the processing method of high tensile steel wire.
Further, the spring is 3.0mm~4.0mm with the diameter of section of high tensile steel wire.
Further, the spring is one of round, ellipse, oval with the cross sectional shape of high tensile steel wire.
Further, the spring is 2220MPa~2320MPa with the tensile strength of high tensile steel wire.
The present invention adjusts the content of part chemical element, reduces the content range of most of chemical element,
Such as conventional elemental carbon element, element silicon, manganese element and harmful element P elements, element sulphur, while increasing effectively chemistry member
The content of plain chromium improves the power loss late of spring in a heated condition；Furthermore the present invention is in Current standards steel wire machined parameters
On the basis of optimize the atmosphere of Q-tempering temperature and steel wire in quenching process of steel wire in process, to mention
The tensile strength of high steel wire improves spring safety coefficient, extends fatigue life.
Make furtherly below with reference to technical effect of the specific embodiment to design of the invention, specific method and generation
It is bright, to fully understand the purposes, features and effects of the present invention.
Specific embodiment
The following present multiple preferred embodiments of the invention, keep its technology contents more clear and are easy to understand.This hair
It is bright to be emerged from by many various forms of embodiments, what protection scope of the present invention was not limited only to mention in text
Embodiment.
Embodiment 1
The spring steel wire material chemical component provided in the embodiment of the present invention is described as follows:
C: carbon is most important basic element in steel, is to improve most effective, the most economical element of spring hardness of steel.By mentioning
Carbon content in high spring steel can effectively improve its intensity, mitigate spring weight, meet motor spring high intensity and light-weighted need
It asks；But excessively high carbon will lead to the poor toughness of spring steel, easily causes spring steel wire brittleness excessive after being especially heat-treated, is not easy to make
Spring or fatigue clear break, therefore, carbon are controlled 0.55%~0.6%.
Si: silicon does not form carbide in steel, but be present in ferrite or austenite in the form of solid solution to
Improve heat resistance.The effect that silicon improves solid solution intensity in steel is extremely strong, and as silicone content increases, the intensity index of steel is especially bent
Clothes point is significantly improved；But the excessively high plasticity and toughness that can reduce steel of silicon, and silicon increases the activity of carbon so as to cause the de- of steel
Carbon and graphitization, further influence the anti-fatigue performance of steel, therefore controlling its content is 1.4%~1.6%.
Mn: manganese is good deoxidier and desulfurizing agent, the red brittleness caused by capable of eliminating or weakening because of sulphur, so as to improve steel
Hot-working character.Manganese is almost absent any influence to its ductility, but manganese is also shown while improving spring hardness of steel
The tendency and temper brittleness sensibility for increasing crystalline grain of steel roughening are write, therefore, control manganese is 0.4%~0.8%.
P: phosphorus is the harmful element in steel, can significantly reduce the low-temperature flexibility of steel；In addition, also to will increase steel belt roof bolt quick for phosphorus
Perception, therefore, control phosphorus content are≤0.025%.
S: sulphur is the harmful element in steel, sulphur formed in steel MnS and FeS be mixed in crystal boundary segregation can deteriorate the cold of steel plus
Work performance causes the hot-short of steel, and therefore, control sulfur content is≤0.02%.
Cu: copper be easy to produce in hot-working it is hot-short, therefore, control the content of copper be≤0.12%.
Cr: chromium is to obtain heat resistance and antioxidative effective element.Chromium in steel can reduce the activity of carbon, and steel is inhibited to exist
Decarburization and graphitization tendency when high-temperature heating, increase the stability of spring in a heated condition, advantageous to anti-fatigue performance；Together
Shi Ge also has corrosion resistance.But too high levels subtract performance to bullet and toughness is unfavorable.Thus control chromium content be 0.60%~
0.85%.
V: vanadium also improves the plasticity and toughness of steel in addition to the intensity for improving steel.Vanadium is added in spring steel, matches with chromium or manganese
It closes and uses, increase the elastic limit of steel, and improve metallurgical quality.Vanadium in steel refines crystalline grain of steel, and toughness increases.But vanadium contains
Amount can excessively reduce steel toughness.Therefore, V control is 0.05%~0.20%.
Preferably, H content control is less than 0.0001% in spring steel wire material provided by the embodiment of the present invention, hydrogen pair
In the steel that tensile strength is more than 1000MPa, hydrogen embrittlement or Delayed hydride cracking are the principal mode of its failure, spring of the invention
H content control is being less than by oneself far super 1000MPa of steel tensile strength in order to avoid the hydrogen embrittlement or Delayed hydride cracking of steel
0.0001%.
Embodiment 2
The present invention also provides a kind of processing methods for being used to prepare spring high tensile steel wire, comprising the following steps:
(1) unwrapping wire: providing above-mentioned spring high tensile material, checks surface quality, and payingoff speed is 20~30m/min；
(2) heating and thermal insulation, steel wire enter heating furnace, are heated, and steel wire is carried out austenitizing, has gas shield in furnace, to avoid
Steel wire surface decarburization, protective gas are nitrogen and/or inert gas, the wherein preferred argon gas of inert gas；(3) it quenches, quenching temperature
Degree is to have gas shield in 840~850 DEG C of pipes, and to avoid steel wire surface decarburization, protective gas is nitrogen；(4) it is tempered, after quenching
Martensitic steel wire enter tempering furnace and be tempered, tempering temperature is 395 DEG C~405 DEG C；(5) nondestructive inspection, to Q-tempering
The surface quality of steel wire is continuously detected；(7) take-up receives the martensitic steel wire after nondestructive inspection by take-up
Line works to arrive target product.Above-mentioned processing method improves steel wire by the setting to hardening heat and tempering temperature
Tensile strength still can achieve very high safety coefficient, extend fatigue life when spring stress is higher.
Embodiment 3
The embodiment of the invention provides one kind high tensile spring steel wires made of above-mentioned processing method: the high tensile steel wire
Diameter of section be 3.5mm~4.0mm, shape is round, ellipse or oval, and the shape design can reduce spring static load
Stress improves spring performance index, can reduce spring sizes under same load；Tensile strength is 2220MPa~2320MPa,
The force value demand that can satisfy automobile power back door unlatching in the biggish situation of spring stress, reaches higher safety coefficient,
Thermodynamic loss rate is reduced, fatigue life is extended.
The preferred embodiment of the present invention has been described in detail above.It should be appreciated that the ordinary skill of this field is without wound
The property made labour, which according to the present invention can conceive, makes many modifications and variations.Therefore, all technician in the art
Pass through the available technology of logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Scheme, all should be within the scope of protection determined by the claims.
Claims (10)
1. a kind of spring steel wire material, which is characterized in that the spring steel wire material include following mass percent chemistry at
Point: C 0.55%~0.6%, Si 1.4~1.6%, Mn 0.4%~0.8%, P≤0.025%, S≤0.02%, Cu≤
0.12%, Cr 0.6%~0.85%, V 0.05%~0.2%, surplus are Fe and inevitable impurity；It is described inevitable
Impurity in include H.
2. spring steel wire material as described in claim 1, which is characterized in that the quality percentage of H in the spring steel wire material
Than≤0.0001%.
3. a kind of processing method for being used to prepare spring high tensile steel wire, which is characterized in that spring high tensile steel wire
Using spring steel wire material of any of claims 1 or 2 as raw material, the described method comprises the following steps:
A. unwrapping wire；B. heating and thermal insulation；C. it quenches；D. it is tempered；E. nondestructive inspection；F. take-up.
4. the processing method for being used to prepare spring high tensile steel wire as claimed in claim 3, which is characterized in that the quenching
Temperature be 840 DEG C~850 DEG C.
5. the processing method for being used to prepare spring high tensile steel wire as claimed in claim 3, which is characterized in that the tempering
Temperature be 395 DEG C~405 DEG C.
6. the processing method for being used to prepare spring high tensile steel wire as claimed in claim 3, which is characterized in that the quenching
In the process, nitrogen is filled with as protective gas.
7. a kind of spring high tensile steel wire, which is characterized in that the spring is passed through described in claim 3-6 with high tensile steel wire
The spring that is used to prepare be made of the processing method of high tensile steel wire.
8. spring as claimed in claim 7 high tensile steel wire, which is characterized in that the section of spring high tensile steel wire
Diameter is 3.0mm~4.0mm.
9. spring as claimed in claim 7 high tensile steel wire, which is characterized in that the section of spring high tensile steel wire
Shape is one of round, ellipse, oval.
10. spring as claimed in claim 7 high tensile steel wire, which is characterized in that spring high tensile steel wire resists
Tensile strength is 2220MPa~2320MPa.
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| CN201811300422.5A CN109252103A (en) | 2018-11-02 | 2018-11-02 | A kind of spring highly resistance steel wire and its processing method |
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| CN201811300422.5A CN109252103A (en) | 2018-11-02 | 2018-11-02 | A kind of spring highly resistance steel wire and its processing method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110961862A (en) * | 2019-10-30 | 2020-04-07 | 西安远方航空技术发展有限公司 | Method for processing damping ring in air inlet measuring rake |
| CN115011784A (en) * | 2022-07-29 | 2022-09-06 | 安阳双兴线材制品有限公司 | Novel heat treatment process |
| CN115094335A (en) * | 2022-07-22 | 2022-09-23 | 李家华 | Automobile tail door spring steel wire and preparation method thereof |
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|---|---|---|---|---|
| JPS5996246A (en) * | 1982-11-22 | 1984-06-02 | High Frequency Heattreat Co Ltd | Steel wire for cold formed spring of extra high strength its production and cold formed spring of extra high strength obtained from said steel wire |
| JPH02129422A (en) * | 1988-11-08 | 1990-05-17 | Sumitomo Electric Ind Ltd | High-strength coil spring and manufacture thereof |
| JPH05320826A (en) * | 1992-05-20 | 1993-12-07 | Kobe Steel Ltd | High strength spring steel |
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| CN105349748A (en) * | 2015-10-09 | 2016-02-24 | 天津冶金集团中兴盛达钢业有限公司 | High-strength spring steel wire machining method for automobile bearing spring |
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| CN108179355A (en) * | 2018-01-31 | 2018-06-19 | 中钢集团郑州金属制品研究院有限公司 | A kind of high-intensity and high-tenacity spring steel wire and its preparation process |
-
2018
- 2018-11-02 CN CN201811300422.5A patent/CN109252103A/en active Pending
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|---|---|---|---|---|
| JPS5996246A (en) * | 1982-11-22 | 1984-06-02 | High Frequency Heattreat Co Ltd | Steel wire for cold formed spring of extra high strength its production and cold formed spring of extra high strength obtained from said steel wire |
| JPH02129422A (en) * | 1988-11-08 | 1990-05-17 | Sumitomo Electric Ind Ltd | High-strength coil spring and manufacture thereof |
| JPH05320826A (en) * | 1992-05-20 | 1993-12-07 | Kobe Steel Ltd | High strength spring steel |
| CN101397629A (en) * | 2007-09-26 | 2009-04-01 | 南京依维柯汽车有限公司 | High intensity variable section spring piece under high stress and method for producing the same |
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| CN115011784B (en) * | 2022-07-29 | 2024-02-27 | 安阳双兴线材制品有限公司 | Heat treatment process |
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