CN106399824A - High-tenacity spring steel and machining technique thereof - Google Patents
High-tenacity spring steel and machining technique thereof Download PDFInfo
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- CN106399824A CN106399824A CN201610683250.9A CN201610683250A CN106399824A CN 106399824 A CN106399824 A CN 106399824A CN 201610683250 A CN201610683250 A CN 201610683250A CN 106399824 A CN106399824 A CN 106399824A
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- 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
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
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- 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
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
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- 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
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- 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
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- 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
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
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- 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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
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- 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
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
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- 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
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
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Abstract
The invention discloses high-tenacity spring steel and a machining technique thereof, and relates to the field of spring steel and machining techniques thereof. The high-tenacity spring steel comprises, by weight, 0.28%-0.63% of carbon, 0.75%-1.53% of manganese, 0.38%-1.25% of silicon, 4.25%-5.17% of nickel, 0.25%-0.49% of molybdenum, 0.03%-0.12% of tungsten, 0.005%-0.008% of niobium, 0-0.012% of titanium, 0.05%-0.18% of rare earth metal, 0.005%-0.01% of copper, 0.002%-0.005% of nitrogen, less than 0.002% of sulfur, less than 0.002% of phosphorus, and the balance ferrum. According to the high-tenacity spring steel and the machining technique thereof, by reasonably adjusting the proportion of all the elements, a spring can have high tenacity, and the mechanical property and machinability of the spring are improved; and after surface machining, the corrosion resistance of the spring is remarkably improved, the service life is prolonged by 10-15 times, and the spring can be used in various severe environments.
Description
Technical field
The present invention relates to spring steel and its processing technique field are and in particular to a kind of high tenacity spring steel and its processing work
Skill.
Background technology
Spring steel be a kind of have good elasticity, can under dynamic loading environmental condition repeated action work special steel
Material, has enough toughness, mechanical strength and plasticity, and the property of may be repeated is stretched, and under certain impact force action not
The unexpected brittle failure of meeting, is therefore used for manufacturing the steel of spring and flexible member, is widely used in the machines such as railway, automobile, engineering machinery
Among tool manufactures.The elasticity of spring steel depends on the ability of its elastic deformation, that is, within the scope of regulation, the energy of elastic deformation
Power makes it bear certain load, occurs without permanent deformation after load removes.Meanwhile, spring steel is also required to certain mechanics
Intensity, so as to not cause plastic deformation when bearing heavy load, has higher fatigue strength, has long use under loads
Life-span.
Automobile making and rolling stock are the maximum users of spring steel, due to spring type component condition of work very
Badly so that spring is often corroded by surrounding medium.Because spring is operationally to play a role by elastic force, spring quilt
After corrosion, elastic force can change and loss of function, therefore prevent spring corrosion from can ensure that spring steady operation, and extend it
Service life.
In order to protect spring from corrosion, generally using methods such as plating, oxidation, phosphatization and paint sprayings in spring surface
Form protective layer, but this several method all has deficiency in actual implementation process, such as in electroplating process, except in spring table
Face plates outside the metals such as zinc or cadmium, and the hydrogen of some reduction infiltrates through in coating and the lattice of parent metal, causes
Internal stress, makes the coating on spring and spring become fragile, i.e. hydrogen embrittlement makes spring be easily broken off；After oxidation processes, spring surface can be given birth to
Become the magnetic oxygenated iron thin film of protectiveness, but because film is thin and has pore, so corrosion resistance is poor；In addition, oxidation processes
Surface crystal boundary etch to some hot rolling spring materials, this reduces spring fatigue intensity to a certain extent；Although phosphatization
Better than oxidation corrosion resistance, but also can produce a large amount of hydrogen in parkerizing process, make the spring after phosphatization have Hydrogen Brittleness Phenomena；Oil
The paint film that paint spraying process is formed in spring surface is not smooth, drain spray, upper-thin-lower-thick, edge sagging phenomenon, adhesion easily
Bad, easily come off, antirust ability is poor.
Content of the invention
For the deficiencies in the prior art, the invention provides a kind of corrosion-resistant spring is so that spring has good machinery
Performance and mechanical property, the present invention also provides a kind of processing technology of spring, further increases the corrosion resistance of spring, makes
The service life obtaining spring extends.
For realizing object above, the present invention is achieved by the following technical programs：
A kind of high tenacity spring steel, is made up of the element of following weight portion：Carbon 0.28～0.63%, manganese 0.75～
1.53%, silicon 0.38～1.25%, nickel 4.25～5.17%, molybdenum 0.25～0.49%, tungsten 0.03～0.12%, niobium 0.005～
0.008%, titanium 0～0.012%, rare earth metal 0.05～0.18%, copper 0.005～0.01%, nitrogen 0.002～0.005%, sulphur
<0.002%, phosphorus<0.002%, remaining is iron.
Preferably, described high tenacity spring steel, is made up of the element of following weight portion：Carbon 0.32～0.51%, manganese
1.03～1.12%, silicon 0.89～0.93%, nickel 4.85～4.95%, molybdenum 0.38～0.42%, tungsten 0.05～0.08%, niobium
0.005～0.008%, titanium 0.005～0.008%, rare earth metal 0.08～0.12%, copper 0.006～0.008%, nitrogen 0.002
～0.005%, sulphur<0.002%, phosphorus<0.002%, remaining is iron.
A kind of processing technology of high tenacity spring steel, comprises the following steps：
(1) pressing the pig iron and scrap iron puts in stove in proportion, after fusing, add ferromanganese, ferrosilicon, ferronickel, molybdenum-iron, ferrotungsten,
Ferro-niobium, ferrotianium, after dissolving, add rare earth metal and copper and iron, subsequently carry out desulfurization, deoxidation, alloying, using refining agent refining,
It is heat-treated after casting, casting, obtain spring steel；
(2) spring steel is heat-treated, obtains high tenacity spring steel；
(3) spring steel is immersed in cold water, and be passed through nitrogen in cold water, remove oxidizing gas, then by system liter
Temperature, to 50～70 DEG C, is subsequently added the mixture of sodium carbonate and sodium acid carbonate, starts ultrasonic cleaning equipment, cleans 15～30min,
Then cleaned with flowing water again, vacuum drying；
(4) spring steel cleaning up is hung and be placed in atmosphere of inert gases, then in its surface rotary spraying oxidation
Zinc nano-deposit, after spraying terminates, then sprays the oxidation nickel coating that a layer thickness is 20～30 microns.
Preferably, described Technology for Heating Processing quenches for high temperature, average tempering.
Preferably, described inert gas is the mixed gas of nitrogen and argon gas.
Preferably, the volume ratio of described nitrogen and argon gas is 1:5～10.
Preferably, the thickness of described nano oxidized zinc coating is 10～20 microns, wherein a diameter of the 30 of zinc oxide particles
～50 nanometers.
Beneficial effects of the present invention, rare earth elements of the present invention improve impact flexibility, non-oxidizability and the anti-corruption of spring
Corrosion and have good deoxidation desulfuration；Niobium can improve yield strength and the impact flexibility of spring；Tungsten alleviates carbide
Assemble, increased quenching degree and the hardness of spring；Silicon can improve elastic limit, yield strength and the yield ratio of spring, and tired
Labor intensity and endurance ratio；Cleaned by hot water, add a small amount of alkaline medium, both can effectively clear up the dirt of steel surface, and
Will not corrode steel, pollute environment, by rotating nano-spray technology it is ensured that the uniformity of spraying and compactness, and aoxidize
There is between zinc and steel stronger adhesion, improve spraying effect.The present invention by the ratio of reasonable adjusting each element so that
Spring has high tenacity, improves mechanical property and the processing characteristics of spring, after Surface Machining is processed, makes the corrosion resistance of spring
Dramatically increase, the life-span improves 10～15 times, the use under multiple adverse circumstances can be met.
Specific embodiment
Purpose, technical scheme and advantage for making the embodiment of the present invention are clearer, below in conjunction with the embodiment of the present invention,
Technical scheme in the embodiment of the present invention is clearly and completely described it is clear that described embodiment is the present invention one
Divide embodiment, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making
The every other embodiment being obtained under the premise of creative work, broadly falls into the scope of protection of the invention.
Embodiment 1：
A kind of high tenacity spring steel, is made up of the element of following weight portion：Carbon 0.32%, manganese 1.12%, silicon 0.93%,
Nickel 4.85%, molybdenum 0.42%, tungsten 0.05%, niobium 0.008%, titanium 0.008%, rare earth metal 0.12%, copper 0.008%, nitrogen
0.002%, sulphur<0.002%, phosphorus<0.002%, remaining is iron.
(1) pressing the pig iron and scrap iron puts in stove in proportion, after fusing, add ferromanganese, ferrosilicon, ferronickel, molybdenum-iron, ferrotungsten,
Ferro-niobium, ferrotianium, after dissolving, add rare earth metal and copper and iron, subsequently carry out desulfurization, deoxidation, alloying, using refining agent refining,
It is heat-treated after casting, casting, obtain spring steel；
(2), high temperature quenching, average tempering are carried out to spring steel, obtain high-strength corrosion-resisting spring steel；
(3) spring steel is immersed in cold water, and be passed through inert gas in cold water, remove oxidizing gas, then by body
System is warming up to 70 DEG C, is subsequently added the mixture of sodium carbonate and sodium acid carbonate, starts ultrasonic cleaning equipment, cleans 15～30min,
Then cleaned with flowing water again, vacuum drying；
(4) spring steel cleaning up is hung and be placed in (wherein nitrogen and argon in the mixed gas being passed through nitrogen and argon gas
The volume ratio of gas is 1:8) Zinc oxide nanoparticle being then, 30 nanometers in its surface rotary spraying particle diameter, obtaining thickness is
18 microns of coating, after spraying terminates, then sprays the oxidation nickel coating that a layer thickness is 25 microns.
Embodiment 2：
A kind of high tenacity spring steel, is made up of the element of following weight portion：Carbon 0.63%, manganese 1.03%, silicon 0.38%,
Nickel 4.25%, molybdenum 0.38%, tungsten 0.12%, niobium 0.006%, rare earth metal 0.08%, copper 0.006%, nitrogen 0.005%, sulphur<
0.002%, phosphorus<0.002%, remaining is iron.
(1) pressing the pig iron and scrap iron puts in stove in proportion, after fusing, add ferromanganese, ferrosilicon, ferronickel, molybdenum-iron, ferrotungsten,
Ferro-niobium, ferrotianium, after dissolving, add rare earth metal and copper and iron, subsequently carry out desulfurization, deoxidation, alloying, using refining agent refining,
It is heat-treated after casting, casting, obtain spring steel；
(2), high temperature quenching, average tempering are carried out to spring steel, obtain high-strength corrosion-resisting spring steel；
(3) spring steel is immersed in cold water, and be passed through inert gas in cold water, remove oxidizing gas, then by body
System is warming up to 60 DEG C, is subsequently added the mixture of sodium carbonate and sodium acid carbonate, starts ultrasonic cleaning equipment, cleans 15～30min,
Then cleaned with flowing water again, vacuum drying；
(4) spring steel cleaning up is hung and be placed in (wherein nitrogen and argon in the mixed gas being passed through nitrogen and argon gas
The volume ratio of gas is 1:5) Zinc oxide nanoparticle being then, 50 nanometers in its surface rotary spraying particle diameter, obtaining thickness is
10 microns of coating, after spraying terminates, then sprays the oxidation nickel coating that a layer thickness is 25 microns.
Embodiment 3：
A kind of high tenacity spring steel, is made up of the element of following weight portion：Carbon 0.51%, manganese 0.73%, silicon 1.25%,
Nickel 4.95%, molybdenum 0.25%, tungsten 0.08%, niobium 0.008%, titanium 0.012%, rare earth metal 0.18%, copper 0.005%, nitrogen
0.005%, sulphur<0.002%, phosphorus<0.002%, remaining is iron.
(1) pressing the pig iron and scrap iron puts in stove in proportion, after fusing, add ferromanganese, ferrosilicon, ferronickel, molybdenum-iron, ferrotungsten,
Ferro-niobium, ferrotianium, after dissolving, add rare earth metal and copper and iron, subsequently carry out desulfurization, deoxidation, alloying, using refining agent refining,
It is heat-treated after casting, casting, obtain spring steel；
(2) high temperature quenching, average tempering are carried out to spring steel, obtain high-strength corrosion-resisting spring steel；
(3) spring steel is immersed in cold water, and be passed through inert gas in cold water, remove oxidizing gas, then by body
System is warming up to 50 DEG C, is subsequently added the mixture of sodium carbonate and sodium acid carbonate, starts ultrasonic cleaning equipment, cleans 15～30min,
Then cleaned with flowing water again, vacuum drying；
(4) spring steel cleaning up is hung and be placed in (wherein nitrogen and argon in the mixed gas being passed through nitrogen and argon gas
The volume ratio of gas is 1:8) Zinc oxide nanoparticle being then, 30 nanometers in its surface rotary spraying particle diameter, obtaining thickness is 5
The coating of micron, after spraying terminates, then sprays the oxidation nickel coating that a layer thickness is 20 microns.
Embodiment 4：
A kind of high tenacity spring steel, is made up of the element of following weight portion：Carbon 0.28%, manganese 1.53%, silicon 0.89%,
Nickel 5.17%, molybdenum 0.49%, tungsten 0.03%, niobium 0.005%, titanium 0.005%, rare earth metal 0.05%, copper 0.01%, nitrogen
0.002%, sulphur<0.002%, phosphorus<0.002%, remaining is iron.
(1) pressing the pig iron and scrap iron puts in stove in proportion, after fusing, add ferromanganese, ferrosilicon, ferronickel, molybdenum-iron, ferrotungsten,
Ferro-niobium, ferrotianium, after dissolving, add rare earth metal and copper and iron, subsequently carry out desulfurization, deoxidation, alloying, using refining agent refining,
It is heat-treated after casting, casting, obtain spring steel；
(2), high temperature quenching, average tempering are carried out to spring steel, obtain high-strength corrosion-resisting spring steel；
(3) spring steel is immersed in cold water, and be passed through inert gas in cold water, remove oxidizing gas, then by body
System is warming up to 70 DEG C, is subsequently added the mixture of sodium carbonate and sodium acid carbonate, starts ultrasonic cleaning equipment, cleans 15～30min,
Then cleaned with flowing water again, vacuum drying；
(4) spring steel cleaning up is hung and be placed in (wherein nitrogen and argon in the mixed gas being passed through nitrogen and argon gas
The volume ratio of gas is 1:10) Zinc oxide nanoparticle being then, 40 nanometers in its surface rotary spraying particle diameter, obtaining thickness is
5 microns of coating, after spraying terminates, then sprays the oxidation nickel coating that a layer thickness is 20 microns.
To sum up, the embodiment of the present invention has the advantages that：The present invention by the ratio of reasonable adjusting each element so that
Spring has high tenacity, improves mechanical property and the processing characteristics of spring, after Surface Machining is processed, makes the corrosion resistance of spring
Dramatically increase, the life-span improves 10～15 times, the use under multiple adverse circumstances can be met.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation are made a distinction with another entity or operation, and not necessarily require or imply these entities or deposit between operating
In any this actual relation or order.And, term " inclusion ", "comprising" or its any other variant are intended to
Comprising of nonexcludability, wants so that including a series of process of key elements, method, article or equipment and not only including those
Element, but also include other key elements being not expressly set out, or also include for this process, method, article or equipment
Intrinsic key element.In the absence of more restrictions, the key element that limited by sentence "including a ..." it is not excluded that
Also there is other identical element including in the process of described key element, method, article or equipment.
Above example only in order to technical scheme to be described, is not intended to limit；Although with reference to the foregoing embodiments
The present invention has been described in detail, it will be understood by those within the art that：It still can be to aforementioned each enforcement
Technical scheme described in example is modified, or carries out equivalent to wherein some technical characteristics；And these modification or
Replace, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (7)
1. a kind of high tenacity spring steel is it is characterised in that be made up of the element of following weight portion：Carbon 0.28～0.63%, manganese
0.75～1.53%, silicon 0.38～1.25%, nickel 4.25～5.17%, molybdenum 0.25～0.49%, tungsten 0.03～0.12%, niobium
0.005～0.008%, titanium 0～0.012%, rare earth metal 0.05～0.18%, copper 0.005～0.01%, nitrogen 0.002～
0.005%, sulphur<0.002%, phosphorus<0.002%, remaining is iron.
2. high tenacity spring steel as claimed in claim 1 is it is characterised in that be made up of the element of following weight portion：Carbon
0.32～0.51%, manganese 1.03～1.12%, silicon 0.89～0.93%, nickel 4.85～4.95%, molybdenum 0.38～0.42%, tungsten
0.05～0.08%, niobium 0.005～0.008%, titanium 0.005～0.008%, rare earth metal 0.08～0.12%, copper 0.006～
0.008%, nitrogen 0.002～0.005%, sulphur<0.002%, phosphorus<0.002%, remaining is iron.
3. a kind of processing technology of high tenacity spring steel as claimed in claim 1 or 2 is it is characterised in that include following walking
Suddenly：
(1) pressing the pig iron and scrap iron puts in stove in proportion, after fusing, add ferromanganese, ferrosilicon, ferronickel, molybdenum-iron, ferrotungsten, ferro-niobium,
Ferrotianium, after dissolving, adds rare earth metal and copper and iron, subsequently carry out desulfurization, deoxidation, alloying, using refining agent refining, casting,
It is heat-treated after casting, obtain spring steel；
(2) spring steel is heat-treated, obtains high tenacity spring steel；
(3) spring steel is immersed in cold water, and be passed through nitrogen in cold water, remove oxidizing gas, then system is warming up to
50～70 DEG C, it is subsequently added the mixture of sodium carbonate and sodium acid carbonate, starts ultrasonic cleaning equipment, clean 15～30min, then
Cleaned with flowing water again, vacuum drying；
(4) spring steel cleaning up is hung and be placed in atmosphere of inert gases, then in its surface rotary spraying zinc oxide nano
Rice coating, after spraying terminates, then sprays the oxidation nickel coating that a layer thickness is 20～30 microns.
4. the processing technology of high tenacity spring steel as claimed in claim 3 is it is characterised in that described Technology for Heating Processing is height
Temperature quenching, average tempering.
5. the processing technology of high tenacity spring steel as claimed in claim 4 is it is characterised in that described inert gas is nitrogen
Mixed gas with argon gas.
6. the processing technology of high tenacity spring steel as claimed in claim 5 is it is characterised in that the body of described nitrogen and argon gas
Long-pending ratio is 1:5～10.
7. the processing technology of high tenacity spring steel as claimed in claim 6 is it is characterised in that described nano oxidized zinc coating
Thickness be 10～20 microns, wherein a diameter of 30～50 nanometers of zinc oxide particles.
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| CN201610683250.9A CN106399824A (en) | 2016-08-17 | 2016-08-17 | High-tenacity spring steel and machining technique thereof |
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| CN201610683250.9A CN106399824A (en) | 2016-08-17 | 2016-08-17 | High-tenacity spring steel and machining technique thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107541590A (en) * | 2017-10-27 | 2018-01-05 | 北京卡特刘科技有限公司 | A kind of heat treatment method for alloy spring steel |
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| CN107541590A (en) * | 2017-10-27 | 2018-01-05 | 北京卡特刘科技有限公司 | A kind of heat treatment method for alloy spring steel |
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Application publication date: 20170215 |