CN110117706A - Horse shellfish complex tissue material strip production technology - Google Patents
Horse shellfish complex tissue material strip production technology Download PDFInfo
- Publication number
- CN110117706A CN110117706A CN201910530208.7A CN201910530208A CN110117706A CN 110117706 A CN110117706 A CN 110117706A CN 201910530208 A CN201910530208 A CN 201910530208A CN 110117706 A CN110117706 A CN 110117706A
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- Prior art keywords
- raw steel
- tissue material
- complex tissue
- strip
- temperature
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- 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.)
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Classifications
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- 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
-
- 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
-
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/002—Bainite
-
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/008—Martensite
Abstract
Present invention discloses a kind of horse shellfish complex tissue material strip production technology, including heat treatment step, preliminary slitting pressure rolling step and secondary slitting pressure rolling step, the heat treatment step includes: by the austenitizing of raw steel；Isothermal holding is carried out to raw steel；Raw steel is quenched, the austenite fraction in raw steel is made to be changed into bainite；After the central part of raw steel also reaches formation of martensite temperature, reheating is carried out to raw steel, so that remaining partial austenitic in the raw steel is completely reformed into bainite and is made established martenaging martempering, finally converts horse shellfish complex tissue material plate for raw steel.The present invention is effectively guaranteed the stability and high efficiency of heat treatment link in strip process, ensure that the reliability of prepared horse shellfish complex tissue material.
Description
Technical field
The present invention relates to a kind of production technology more particularly to a kind of production technologies of horse shellfish complex tissue material strip, belong to
In metal working technical area.
Background technique
Strip, also known as steel band are a kind of middlewares common in industrial production.Strip finished product is generally supplied in rolls, is relied on
Its dimensional accuracy is high, surface quality is good, it is easy to process, save the advantages that material, be widely used in manufacturing welded tube,
The industrial products such as clip, washer, spring leaf, saw blade, blade.
Existing belt steel product is made of stainless steel mostly, selected by stainless steel kind include austenitic stainless steel,
Ferritic stainless steel, martensitic stain less steel, two phase stainless steel and 200 are stainless steel etc..Due to the iron element in these stainless steels
Body and austenitic stainless steel are generally only used for the products such as production vessel, panel since its intensity is lower.It is being used as material structure
When, since its intensity is lower, is merely able to increase dosage, so that the processing cost of enterprise increases considerably.For above-mentioned list
The material limitation of the belt steel product of one material also occurs being made the processing side of strip of complex tissue material at present
Formula, since complex tissue material has both the advantage of multiple material respectively, for homogenous material, the scope of application is more
Extensively, the stability of final finished is higher.
By taking horse shellfish complex tissue material as an example, horse shellfish complex tissue, which refers to, first generates geneva during organizing quenching
Body, the high portions turn of phosphorus content is bainite in subsequent austenite.And corresponding with this transition process is shellfish Ma Fuhe
Tissue.But although both belonging to complex tissue material, and ingredient constitutes approximation, but in shellfish horse complex tissue, martensite
It is mostly the high carbon martensite of big sheet, substructure is twin, and brittleness is very big, meanwhile, the high carbon martensite of big sheet is in height
It when the formation of carbon martensite piece, hits mutually, easily generation internal stress and micro-crack.Therefore, compared with shellfish horse complex tissue, horse shellfish
Complex tissue has better intensity, impact flexibility, fracture toughness and wearability.
Also it is based on above-mentioned reason, the strip produced using horse shellfish complex tissue material applies model with very wide
It encloses, use demand is also more strong.But during current processing, technical staff's discovery, due to horse shellfish complex tissue
Material is higher to the technical requirements of production and processing in heat treatment link, therefore in actual production process, for this kind of horse
The production and processing of the strip of shellfish complex tissue material is difficult routinely to keep stable, efficient.
In conclusion how to propose a kind of production work of completely new horse shellfish complex tissue strip on the basis of existing technology
Skill meets the processing needs in actual mechanical process, also just becomes those skilled in that art institute urgent problem to be solved.
Summary of the invention
In view of the prior art, there are drawbacks described above, and the purpose of the present invention is to propose to a kind of horse shellfish complex tissue material strips
Production technology, it is specific as follows.
A kind of horse shellfish complex tissue material strip production technology, includes the following steps:
S1, heat treatment step take coiled raw steel, are heat-treated to the raw steel, obtain complex tissue material
Steel plate, the complex tissue material plate are horse shellfish complex tissue material plate；
S2, preliminary slitting pressure rolling step carry out calendering roughing to the complex tissue material plate and first time slitting are sheared,
It obtains strip and processes semi-finished product；
S3, secondary slitting pressure rolling step carry out calendering finish rolling to strip processing semi-finished product and second of slitting are sheared, obtain
Finished product is processed to strip and packaging product is carried out to strip processing finished product；
The S1 heat treatment step includes,
S11, the raw steel is heated to austenitizing temperature, realizes the austenitizing of raw steel；
S12, the raw steel after austenitizing is sent into heat-preserving equipment, isothermal holding is carried out to the raw steel；
S13, the raw steel after progress isothermal holding is quenched, the temperature of the raw steel is cooled to
Formation of martensite temperature makes the austenite fraction in the raw steel be changed into bainite, subsequent isothermal；
S14, after isothermal operation, after the central part of the raw steel also reaches formation of martensite temperature, immediately to described
Raw steel carries out reheating, the raw steel is heated to bainite temperature, subsequent isothermal makes the raw steel
In remaining partial austenitic be completely reformed into bainite and make established martenaging martempering, finally by the raw steel turn
Turn to the horse shellfish complex tissue material plate.
Preferably, in S11, the austenitizing temperature is the temperature when raw steel starts to be converted into austenite
Degree, the austenitizing temperature are 820 DEG C ~ 850 DEG C.
Preferably, in S12, the temperature in the heat-preserving equipment is 800 DEG C ~ 820 DEG C；The raw steel is in the guarantor
A length of 5min ~ 20min when heat preservation in warm equipment.
Preferably, in S12, heat preservation duration of the raw steel in the heat-preserving equipment and the raw steel
Thickness is positively correlated, when heat preservation needed for the raw steel of every 1mm thickness a length of 5min ~ 7min, the minimum of the raw steel
A length of 5min when heat preservation.
Preferably, in S13, when being quenched to the raw steel, the type of cooling is gas cooling or liquid
Cooling, cooling velocity is 150 DEG C/s ~ 300 DEG C/s.
Preferably, in S13, when being quenched to the raw steel, the type of cooling is gas cooling, cooling to be situated between
Matter is the compressed air of 0.3Mpa ~ 0.5Mpa.
Preferably, in S13, the formation of martensite temperature is temperature when austenite starts to be changed into martensite, described
Formation of martensite temperature is -100 DEG C ~ 200 DEG C.
Preferably, in S14, the bainite temperature is temperature when austenite starts to be changed into bainite, described
Bainite temperature is 200 DEG C ~ 250 DEG C.
Preferably, the preliminary slitting pressure rolling step of the S2 includes:
S21, calendering roughing is carried out to the complex tissue material plate, obtains the coiled roughing steel plate of sheet, the roughing steel
Plate with a thickness of 1.5mm ~ 2mm；
S22, first slitting shearing is carried out to the roughing steel plate, is multireel same size by a roll of roughing steel plate partition
Strip processes semi-finished product, and the width of the strip processing semi-finished product is 400mm ~ 1000mm.
Preferably, bis- slitting pressure rolling steps of the S3 include:
S31, calendering finish rolling is carried out to strip processing semi-finished product, obtains strip processing fine work, the strip processing fine work
With a thickness of 0.2mm ~ 1.8mm；
S32, deburring processing is carried out to strip processing fine work, modifies the flatness of edges of the strip processing fine work；
S33, it tests to strip processing fine work, described examine includes at least material evaluation, Inspection of Thickness, width inspection
And flatness inspection, S34 step is entered if inspection result is up to standard, if inspection result is below standard to return to S1 step, to institute
It states strip processing fine work and carries out secondary operation；
S34, secondary slitting shearing is carried out to strip processing fine work, obtains strip processing finished product, the strip processes finished product
Width be 100mm ~ 500mm, finally strip processing finished product is packed, completes to produce.
Compared with prior art, advantages of the present invention is mainly reflected in the following aspects:
A kind of production technology of horse shellfish complex tissue material strip of the present invention, is effectively guaranteed in strip process
The stability and high efficiency of heat treatment link ensure that the reliability of prepared horse shellfish complex tissue material.By the present invention
Technique horse shellfish complex tissue material obtained have better intensity, impact flexibility, fracture toughness and wearability, overcome
Homogenous material intensity is not high and the problems such as shellfish horse complex tissue material brittle is split, and expands final belt steel product
Application range enriches the type of belt steel product.
Meanwhile the normalization of production technology of the invention in each processing link is high, operation difficulty is relatively low, in each
The state of art of small-sized strip manufacturing enterprise matches, can be by being applied to respectively not to being adaptively adjusted for part producing link
In same manufacturing enterprise, compatibility, the suitability of technique are good, the large-scale promotion application of enterprise easy to process, have very high
Use and promotional value.
The embodiment of the present invention is described in further detail below, so that technical solution of the present invention is easier to manage
Solution is grasped.
Specific embodiment
Present invention discloses a kind of production technology of horse shellfish complex tissue material strip, horse shellfish prepared by the present invention is compound
Organization material, compared to the prior art applied in shellfish horse complex tissue material, phosphorus content is lower, have lower crackle it is quick
Perceptual and higher dimensional stability.And horse shellfish complex tissue material prepared by the present invention does not need experience tempering and adds
Work has effectively saved the energy, shortens the production cycle of product.The specific processing step of the present invention is as follows.
A kind of horse shellfish complex tissue material strip production technology, includes the following steps:
S1, heat treatment step take coiled raw steel, are heat-treated to the raw steel, obtain complex tissue material
Steel plate, the complex tissue material plate are horse shellfish complex tissue material plate.
The S1 heat treatment step specifically includes,
S11, the raw steel is heated to austenitizing temperature, realizes the austenitizing of raw steel.The austenitizing
Temperature is the temperature when raw steel starts to be converted into austenite, and the austenitizing temperature is 820 DEG C ~ 850 DEG C.
S12, the raw steel after austenitizing is sent into heat-preserving equipment, the temperature in the heat-preserving equipment is 800
℃~820℃。
Isothermal holding, heat preservation duration and institute of the raw steel in the heat-preserving equipment are carried out to the raw steel
The thickness for stating raw steel is positively correlated, when heat preservation needed for the raw steel of every 1mm thickness a length of 5min ~ 7min, the original
Expect a length of 5min when the minimum heat preservation of steel plate.
In the present embodiment, a length of 5min ~ 20min when heat preservation of the raw steel in the heat-preserving equipment.
S13, the raw steel after progress isothermal holding is quenched, the temperature of the raw steel is cold
But to formation of martensite temperature, the formation of martensite temperature is temperature when austenite starts to be changed into martensite, the martensite
Changing temperature is -100 DEG C ~ 200 DEG C.The austenite fraction in the raw steel is set to be changed into bainite, subsequent isothermal.
It should be noted that the type of cooling is that gas cooling or liquid are cold when being quenched to the raw steel
But, in the present embodiment, it is preferable to use the compressed air of 0.3Mpa ~ 0.5Mpa carries out gas cooling, and cooling velocity should be greater than
Critical cooling rate is 150 DEG C/s ~ 300 DEG C/s in the present embodiment.
S14, after isothermal operation, it is right immediately after the central part of the raw steel also reaches formation of martensite temperature
The raw steel carries out reheating, the raw steel is heated to bainite temperature, the bainite temperature is
Austenite starts to be changed into temperature when bainite, and the bainite temperature is 200 DEG C ~ 250 DEG C.Subsequent isothermal makes described
Remaining partial austenitic is completely reformed into bainite and makes established martenaging martempering in raw steel, finally by the original
Material steel plate is converted into the horse shellfish complex tissue material plate.
S2, preliminary slitting pressure rolling step carry out calendering roughing and first time slitting to the complex tissue material plate
Shearing obtains strip and processes semi-finished product.
The preliminary slitting pressure rolling step of S2 specifically includes,
S21, calendering roughing is carried out to the complex tissue material plate, obtains the coiled roughing steel plate of sheet, the roughing steel
Plate with a thickness of 1.5mm ~ 2mm.
S22, first slitting shearing is carried out to the roughing steel plate, is the identical rule of multireel by a roll of roughing steel plate partition
The strip of lattice processes semi-finished product, and the width of the strip processing semi-finished product is 400mm ~ 1000mm.
S3, secondary slitting pressure rolling step carry out calendering finish rolling to strip processing semi-finished product and second of slitting are cut
It cuts, obtain strip processing finished product and packaging product is carried out to strip processing finished product.
Bis- slitting pressure rolling steps of the S3 include,
S31, calendering finish rolling is carried out to strip processing semi-finished product, obtains strip processing fine work, the strip processing fine work
With a thickness of 0.2mm ~ 1.8mm.
S32, deburring processing is carried out to strip processing fine work, modifies the flatness of edges of the strip processing fine work.
S33, to the strip processing fine work test, in the present embodiment, it is described examine include at least material evaluation,
Inspection of Thickness, width is examined and flatness inspection.Enter S34 step if inspection result is up to standard, if inspection result is below standard
It then returns to S1 step, secondary operation is carried out to strip processing fine work.
S34, secondary slitting shearing is carried out to strip processing fine work, obtains strip processing finished product, the strip processing
The width of finished product is 100mm ~ 500mm, is finally packed to strip processing finished product, completes to produce.
In conclusion a kind of production technology of horse shellfish complex tissue material strip of the present invention, is effectively guaranteed
The stability and high efficiency of heat treatment link in strip process, ensure that prepared horse shellfish complex tissue material can
By property.By technique horse shellfish complex tissue material obtained of the invention have better intensity, impact flexibility, fracture toughness with
And wearability, the problems such as homogenous material intensity is not high and shellfish horse complex tissue material brittle is split are overcome, are expanded most
The application range of whole belt steel product, enriches the type of belt steel product.
Meanwhile the normalization of production technology of the invention in each processing link is high, operation difficulty is relatively low, in each
The state of art of small-sized strip manufacturing enterprise matches, can be by being applied to respectively not to being adaptively adjusted for part producing link
In same manufacturing enterprise, compatibility, the suitability of technique are good, the large-scale promotion application of enterprise easy to process, have very high
Use and promotional value.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit and essential characteristics of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (10)
1. a kind of horse shellfish complex tissue material strip production technology, which comprises the steps of:
S1, heat treatment step take coiled raw steel, are heat-treated to the raw steel, obtain complex tissue material
Steel plate, the complex tissue material plate are horse shellfish complex tissue material plate；
S2, preliminary slitting pressure rolling step carry out calendering roughing to the complex tissue material plate and first time slitting are sheared,
It obtains strip and processes semi-finished product；
S3, secondary slitting pressure rolling step carry out calendering finish rolling to strip processing semi-finished product and second of slitting are sheared, obtain
Finished product is processed to strip and packaging product is carried out to strip processing finished product；
The S1 heat treatment step includes,
S11, the raw steel is heated to austenitizing temperature, realizes the austenitizing of raw steel；
S12, the raw steel after austenitizing is sent into heat-preserving equipment, isothermal holding is carried out to the raw steel；
S13, the raw steel after progress isothermal holding is quenched, the temperature of the raw steel is cooled to
Formation of martensite temperature makes the austenite fraction in the raw steel be changed into bainite, subsequent isothermal；
S14, after isothermal operation, after the central part of the raw steel also reaches formation of martensite temperature, immediately to described
Raw steel carries out reheating, the raw steel is heated to bainite temperature, subsequent isothermal makes the raw steel
In remaining partial austenitic be completely reformed into bainite and make established martenaging martempering, finally by the raw steel turn
Turn to the horse shellfish complex tissue material plate.
2. horse shellfish complex tissue material strip production technology according to claim 1, which is characterized in that described in S11
Austenitizing temperature is the temperature when raw steel starts to be converted into austenite, the austenitizing temperature is 820 DEG C ~
850℃。
3. horse shellfish complex tissue material strip production technology according to claim 1, it is characterised in that: described in S12
Temperature in heat-preserving equipment is 800 DEG C ~ 820 DEG C；A length of 5min when heat preservation of the raw steel in the heat-preserving equipment ~
20min。
4. horse shellfish complex tissue material strip production technology according to claim 1, it is characterised in that: described in S12
The thickness of heat preservation duration of the raw steel in the heat-preserving equipment and the raw steel is positively correlated, the original of every 1mm thickness
A length of 5min ~ 7min when heat preservation needed for expecting steel plate, the minimum of the raw steel a length of 5min when keeping the temperature.
5. horse shellfish complex tissue material strip production technology according to claim 1, it is characterised in that: in S13, to institute
When stating raw steel and being quenched, the type of cooling is that gas cooling or liquid are cooling, and cooling velocity is 150 DEG C/s ~ 300
℃/s。
6. horse shellfish complex tissue material strip production technology according to claim 1, it is characterised in that: in S13, to institute
When stating raw steel and being quenched, the type of cooling is gas cooling, and the compression that cooling medium is 0.3Mpa ~ 0.5Mpa is empty
Gas.
7. horse shellfish complex tissue material strip production technology according to claim 1, it is characterised in that: described in S13
Formation of martensite temperature is temperature when austenite starts to be changed into martensite, and the formation of martensite temperature is -100 DEG C ~ 200 DEG C.
8. horse shellfish complex tissue material strip production technology according to claim 1, it is characterised in that: described in S14
Bainite temperature is temperature when austenite starts to be changed into bainite, and the bainite temperature is 200 DEG C ~ 250 DEG C.
9. horse shellfish complex tissue material strip production technology according to claim 1, which is characterized in that the S2 tentatively divides
Pressure rolling step includes:
S21, calendering roughing is carried out to the complex tissue material plate, obtains the coiled roughing steel plate of sheet, the roughing steel
Plate with a thickness of 1.5mm ~ 2mm；
S22, first slitting shearing is carried out to the roughing steel plate, is multireel same size by a roll of roughing steel plate partition
Strip processes semi-finished product, and the width of the strip processing semi-finished product is 400mm ~ 1000mm.
10. horse shellfish complex tissue material strip production technology according to claim 1, which is characterized in that the S3 bis- times
Slitting pressure rolling step includes:
S31, calendering finish rolling is carried out to strip processing semi-finished product, obtains strip processing fine work, the strip processing fine work
With a thickness of 0.2mm ~ 1.8mm；
S32, deburring processing is carried out to strip processing fine work, modifies the flatness of edges of the strip processing fine work；
S33, it tests to strip processing fine work, described examine includes at least material evaluation, Inspection of Thickness, width inspection
And flatness inspection, S34 step is entered if inspection result is up to standard, if inspection result is below standard to return to S1 step, to institute
It states strip processing fine work and carries out secondary operation；
S34, secondary slitting shearing is carried out to strip processing fine work, obtains strip processing finished product, the strip processes finished product
Width be 100mm ~ 500mm, finally strip processing finished product is packed, completes to produce.
Priority Applications (1)
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| CN201910530208.7A CN110117706A (en) | 2019-06-19 | 2019-06-19 | Horse shellfish complex tissue material strip production technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910530208.7A CN110117706A (en) | 2019-06-19 | 2019-06-19 | Horse shellfish complex tissue material strip production technology |
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Family
ID=67524319
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101011704A (en) * | 2006-08-24 | 2007-08-08 | 青岛培明金属有限公司 | New technique for producing hot rolling stainless steel strip |
| JP2009202220A (en) * | 2008-02-29 | 2009-09-10 | Jfe Steel Corp | Method of manufacturing hot-rolled steel strip and work roll for finishing mill |
| CN103436680A (en) * | 2013-08-26 | 2013-12-11 | 武汉钢铁(集团)公司 | Method for producing steel for binding straps with tensile strength of more than or equal to 990 MPa |
| CN109136746A (en) * | 2018-07-27 | 2019-01-04 | 浙江龙盛薄板有限公司 | A kind of bimetal bandsaw backing steel band and preparation method thereof |
-
2019
- 2019-06-19 CN CN201910530208.7A patent/CN110117706A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101011704A (en) * | 2006-08-24 | 2007-08-08 | 青岛培明金属有限公司 | New technique for producing hot rolling stainless steel strip |
| JP2009202220A (en) * | 2008-02-29 | 2009-09-10 | Jfe Steel Corp | Method of manufacturing hot-rolled steel strip and work roll for finishing mill |
| CN103436680A (en) * | 2013-08-26 | 2013-12-11 | 武汉钢铁(集团)公司 | Method for producing steel for binding straps with tensile strength of more than or equal to 990 MPa |
| CN109136746A (en) * | 2018-07-27 | 2019-01-04 | 浙江龙盛薄板有限公司 | A kind of bimetal bandsaw backing steel band and preparation method thereof |
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| 尤绍军等: "高碳铬轴承钢马贝复合组织淬火新技术", 《轴承》 * |
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Application publication date: 20190813 |