CN105420612B - A kind of knotter jaw alloy material and preparation method thereof - Google Patents
A kind of knotter jaw alloy material and preparation method thereof Download PDFInfo
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- CN105420612B CN105420612B CN201510925659.2A CN201510925659A CN105420612B CN 105420612 B CN105420612 B CN 105420612B CN 201510925659 A CN201510925659 A CN 201510925659A CN 105420612 B CN105420612 B CN 105420612B
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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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D59/00—Equipment for binding harvested produce
- A01D59/04—Knotters
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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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
- C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
- C21D1/10—Surface hardening by direct application of electrical or wave energy; by particle radiation by electric induction
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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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/002—Heat treatment of ferrous alloys containing Cr
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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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
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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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
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Abstract
The invention provides a kind of knotter jaw alloy material and preparation method thereof, by percentage to the quality, it contains C 0.9 1.5%, Si to the material<0.5%, Mn 0.5 0.9%, P<0.03%, S 0.02 0.03%, Cr 3 8%, Mo 0.5 2%, W 0.5 2%, V 1 2%, surplus is Fe.Its preparation method includes following：According to melting, insulation, cast, quenching is carried out after chemical analysis dispensing, knotter jaw alloy material is obtained.The tough of the alloy material has both, and has the advantages that high intensity, high tenacity, wear-resisting, and its hardness can reach HRC58, and tensile strength can reach 1617MPa, and impact flexibility can reach 26.1J/cm2.The preparation method of knotter jaw alloy material provided by the present invention, it is convenient, simple, easily operated to have the advantages that, is adapted to large-scale production.
Description
Technical field
Field is manufactured the present invention relates to alloy material, in particular to a kind of knotter jaw alloy material and its system
Preparation Method.
Background technology
Knotter is the mechanism that pick-up bale is used for tiing knots to bale, the arc conductor rope groove that bundle rope is passed through cutter of threading a needle
Mouthful, it is close to above knotting jaw movable jaw, in a breach for being sent to folder cheese (breach disk), breach disk is in worm mechanism
The lower rotation of driving 1/8 week.Bundle rope is jammed due to the pressure of pressure rope latch plate (rope processing device), knotted by with moving downward
After jaw rotates 3/4 week, fake is formed thereon, the roller of claw just reaches the low chute sections of the convex wheel track of support body, driven
Movable jaw opens, and prepares crawl double-strand bundle rope, and after knotting jaw claw bites bundle rope, threading a needle return and is put into bundle rope just
Take a turn for the better into the breach of folder cheese (breach disk) above, be used as fag end before once knotting.After knotting jaw bites bundle rope, knife
Frame setting in motion, cutter simultaneously cuts off two strands of bundle ropes.At this moment knife rest also continues to motion, with arc conductor rope notch knotting jaw
On fake push tip to and then take off.Finally under the promotion of subsequent compression thing, the bifilar fag end also stung in jaw also takes off
Go out, that is, break into two fag ends equally long granny knot.Knotter can be completed to send rope, folder rope, wiring, grabbed in 0.6~0.7S
Restrict, cut the action such as rope, return, dropout.The beginning and termination of each bundling action are all by machine automatization control, the high standard of this mechanism
True property, harmony, reliability, it is ensured that bundled rate reaches more than 99%.
As can be seen here, knotting jaw is a critical component in the mechanism.During knotting, jaw front end with
Bundle rope is directly contacted, and the action of rope, setting fastening is rotated and complete wiring, grabbed in the presence of cam disk.In the process constantly by
To luffing cyclic loading, abrasion, friction and percussion, the stress value on the edge of upper clamp nozzle and at pin knot is serious, by
Crackle, fatigue are gradually formed, is finally extended until fracture completely.So, knotting jaw is the part that knotter is easiest to abrasion, pincers
The quality of mouth material will directly affect the normal work of knotter.The jaw strength of materials is low, poor toughness, not wear-resisting can cause in life
Impaired part is frequently changed during production, stopping production maintenance makes production efficiency reduction, influences the whole duration.
In view of this, it is special to propose the present invention.
The content of the invention
The first object of the present invention is to provide a kind of knotter jaw alloy material, to solve jaw material in the prior art
Expect low intensity, poor toughness, not wear-resisting, the part needs shortcoming that often shut-down is changed.Described knotter jaw alloy material tool
Have the advantages that high intensity, it is high tenacity, wear-resisting.
The second object of the present invention is to provide a kind of preparation method of described knotter jaw alloy material, this method
By melting, insulation, cast, the operation quenched, the alloy material is obtained, it is convenient, simple, easily operated to have the advantages that.
In order to realize the above-mentioned purpose of the present invention, spy uses following technical scheme：
A kind of knotter jaw alloy material, it is characterised in that by percentage to the quality, it contains C 0.9-1.5%, Si
<0.5%, Mn 0.5-0.9%, P<0.03%, S 0.02-0.03%, Cr 3-8%, Mo 0.5-2%, W 0.5-2%, V 1-
2%, surplus is Fe.
In the chemical composition of the alloy material, C is the basis of Carbide Phases generation, other carbide in alloy material
Formation element is combined, therefore, and the selection of C content is controlled 0.9~1.5%；Si is to promote graphite element, dissolves in iron element
Body, improves its tensile strength and hardness, but too high levels can reduce the plasticity of material, therefore, and Si content is unsuitable too high, optional
For less than 0.5%；Mn elements can improve toughness, intensity, hardness and the wearability of steel, while improving the quenching degree of steel, improve
The hot-working character of steel, plays deoxidier or alloy addition in melting, and Mn is also good desulfurizing agent, still, Mn
There is serious normal segregation tendency, eutectic cell grain boundaries formation intergranular carbide can be enriched in, the toughness of material is reduced, therefore, control
Mn processed content is 0.5~0.9%；Cr elements are carbides in structural steel and tool steel, tiny carbonization
Thing is uniformly distributed on alloy substrate, can concentrate dispersive stress, and can significantly improve the intensity of steel, hardness and wear-resisting
Property, but reduction plasticity and toughness simultaneously, so control is in 3-8%；Mo is a kind of strong quenching degree additive, can significantly improve material
Quenching degree, this point handles particularly significant for high-frequency induction surface hardening, and Mo forms M in steel2C Carbide Phases, and energy
Make the crystal grain refinement of steel, but its Mo's is expensive, and content is in the range of 0.5-2.0%；V effect is by forming VC
The tissue and performance of compounds affect steel, the main Precipitation in the cable body of austenite grain boundary, so as to play refinement cable
Body crystal grain, the intensity and toughness for improving steel, in addition, V adds the quenching degree of steel, produce martensite group in quick cooling procedure
Knit, while reducing Si and V content, reduce the VC of precipitation amount, so as to reduce fracture origin, impact flexibility be improved, to prevent
Coarse grains, V content is controlled between 1-2%；W fusing point is high, than great, also easily with carbon formation tungsten carbide, improve hard
Degree and wearability, add tungsten in the alloy material, are remarkably improved red hardness and heat resistance, and its content is controlled 0.5~2%；P
There is serious segregation tendency in cast steel, easily in grain boundaries formation iron phosphide eutectic, material is become fragile, P content is less than 0.03%；
S can generate sulfide or oxysulfide, increase the amount of inclusions, therefore, S content also should be between 0.02-0.03%.
The proportioning of jaw materials chemistry composition provided by the present invention more rationally and optimizes, and relatively low manganese content is avoided
Manganese element forms the performance that carbide deteriorates material, the chromium content rationally reduced, although reduce containing for chromium carbide in the material
Amount, but make the M to be formed7C3Carbide refinement is simultaneously uniformly dispersed in matrix, so that wearability is added, while material
Quenching degree and hardenability are ensured.
In summary, in knotter jaw alloy material provided by the present invention, its chemical composition containing relatively low carbon,
Silicon, chromium, higher molybdenum, vanadium, tungsten.This composition design, reduces normal segregation tendency, while ensure that enough formation carbide
Constituent content, it is to avoid be enriched in the formation of eutectic cell grain boundaries intergranular carbide, improve the intensity and toughness of material.Cr and C
The reduction of content, is favorably improved intensity, ductility, toughness and the wearability of material.Relatively low Cr and C amounts, to a certain extent
The formation of carbide is reduced, makes M7C3Type carbide can be refined and is uniformly distributed.Increase Mo, V content can make secondary
The hardness of hardening is improved.Typically, fracture appears in thick M7C3The rent of type carbide, the present invention realized to carbonization
The refinement of thing and dispersed, stress when can suppress carbide rupture from microstructure rises and CrackGrowth, so that
Reach the tough effect having both.Therefore so that the alloy material that the present invention is provided is protected in strength character, and ensures
The uniformity of material property.Can be as knotter jaw materials'use, its combination property material conventional compared to the country,
It such as 9SiCr, can increase substantially, the service life of knotter jaw is improved 50%-100%.
It is preferred that, described knotter jaw alloy material, by percentage to the quality, it contains C 0.9-1.2%, Si
0.30-0.35%, Mn 0.55-0.65%, P 0.01-0.02%, S 0.02%, Cr 6.5-7.5%, Mo 1.3-1.5%, W
1.0-1.2%, V 1.4-1.5%, surplus are Fe.
P has serious segregation tendency in cast steel, easily in grain boundaries formation iron phosphide eutectic, material is become fragile；S can be generated
Sulfide or oxysulfide.Both elements can all reduce the intensity and toughness of alloy material, therefore, it is necessary to control its content to exist
In minimum scope.
A kind of preparation method of knotter jaw alloy material, it is characterised in that comprise the following steps：
According to melting, insulation, cast, quenching is carried out after chemical analysis dispensing, knotter jaw alloy material is obtained.
Melting, is to dissolve metal material and other auxiliary materials input heating furnace and quenched, furnace charge is in high temperature (1300-
1600K) certain physics, chemical change, the pyrometallurgy of output crude metal or metal enrichment thing and clinker occur for material in stove
Process.Insulation is the metal homogenization in order that molten state.Quenched after moulding by casting, the quenching of steel is that steel is heated into stagnation temperature
Ac3 (sub-eutectoid steel) or Ac1 (hypereutectoid steel) temperatures above is spent, insulation a period of time, all or part of austenitizing is allowed to, so
Below Ms (or isothermal near Ms) is as cold as with the cooling rate more than critical cooling rate soon afterwards and carries out martensite (or bainite) transformation
Technology for Heating Processing.
It is preferred that, the preparation method of described knotter jaw alloy material specifically includes following steps：
(1), according to above-mentioned chemical analysis dispensing, melting in medium frequency induction melting furnace is placed in, after after material all fusing
Insulation, homogenizes alloying component；
(2), material after the melting that is obtained in step (1) is poured into a mould, casting is obtained, it is high then to carry out surface to casting
The processing of frequency impewdance matching, after supercooling, obtains knotter jaw alloy material.
The principle of the heating of medium frequency induction melting furnace is electromagnetic induction, and its heat is due to that workpiece itself is produced, the heating
Mode programming rate is fast, and oxidation is few, and the efficiency of heating surface is high, good process repeatability, and metal surface only has very slight decolouring, slight to throw
Light can make surface recovery bright in mirror surface, so as to effectively obtain constant consistent material property, be favorably improved the intensity of material
And toughness.
Induced surface hardening is to utilize electromagnetic inductive heating principle, part is cut the line of force in alternating magnetic field,
Surface produces induced-current, and according to the kelvin effect of alternating current, is quickly heated piece surface with eddy currents, then chilling
Process for quenching.Compared with traditional process for quenching, sensing heating is directly heated using endogenous pyrogen, heat loss is small, therefore heating speed
Degree is fast, and the thermal efficiency is high；Heat time is short, and piece surface oxidation and decarbonization is few, compared with others heat treatment, part scrap rate root
It is low；The hardness of piece surface is high after induction hardening, and center portion keeps preferable plasticity and toughness, and low notch sensitive is presented
Property, therefore impact flexibility, fatigue strength and wearability etc. improve a lot；And selective heating can be carried out；Sensing heating table
The machine components fragility of face quenching is small, while the mechanical property of part can also be improved, (such as yield point, tensile strength, fatigue are strong
Degree), also pass through quenching hardness of the quenching hardness also above common heating furnace of the steel components of induced surface hardening.
It is preferred that, in step (1), the temperature of the melting is 1480-1550 DEG C.
The fusing point of iron is 1535 DEG C, therefore the selection of smelting temperature should not be too high, and waste of resource, temperature is too low, part gold
Category can not be completely melt, be mixed in inside alloy material, reduce the intensity and toughness of material.
It is preferred that, in step (1), the time of the insulation is 0.1-0.3 hours.
Insulation 0.1-0.3 hours, homogenizes alloying component.
It is preferred that, in step (2), carry out described surface high frequency impewdance matching using induction heating apparatus and handle.
Induction heating equipment is compact, and floor space is small, (i.e. easy to operate) easy to use, production process cleaning, no high temperature,
Working condition is good.Induction heating equipment be can be placed on machining production line, and accurate technique is carried out to process by electric parameter
Control.
It is preferred that, in step (2), the power output of described surface high frequency impewdance matching processing is 20-25KW.
It is preferred that, in step (2), the temperature of described surface high frequency impewdance matching processing is 950-1050 DEG C.
There is certain quenching temperature scope for each steel capital, heating is carried out only in this temperature range and is quenched
Fire, can just obtain the tissue and performance of satisfaction.If the hardening heat of selection is less than optimum temperature, not exclusively, its is hot for phase transformation
Tissue is austenite plus ferrite, or austenite adds pearlite, then is organized as martensite plus ferrite or horse after quenching
Family name's body adds pearlite, it may appear that the phenomenon of hardness reduction；If quenching temperature is too high, hot austenite crystal can grow up,
Middle pin or coarse martensite are obtained after quenching, if high-carbon steel will have retained austenite appearance, and causes case hardness to drop
It is low.
It is preferred that, in step (2), the mode of the cooling cools down for air.
Compared with prior art, beneficial effects of the present invention are：
(1) the knotter jaw alloy material that provides of the present invention, has the advantages that high intensity, high tenacity, wear-resisting, tough simultaneous
Standby, its hardness can reach HRC58, and tensile strength can reach 1617MPa, and impact flexibility can reach 26.1J/cm2。
(2) the second object of the present invention is to provide a kind of preparation method of described knotter jaw alloy material, tool
Have the advantages that conveniently, it is simple, easily operated, be adapted to large-scale production.
Embodiment
Embodiment of the present invention is described in detail below in conjunction with embodiment, but those skilled in the art will
Understand, the following example is merely to illustrate the present invention, and is not construed as limiting the scope of the present invention.It is unreceipted specific in embodiment
Condition person, the condition advised according to normal condition or manufacturer is carried out.Agents useful for same or the unreceipted production firm person of instrument, be
The conventional products that can be obtained by commercially available purchase.
Embodiment 1
By percentage to the quality, it contains C 0.9%, Si 0.1% to the knotter jaw alloy material that the present invention is provided,
Mn 0.5%, P 0.01%, S 0.02%, Cr 3%, Mo 0.5%, W 0.5%, V 1%, surplus is Fe.
The preparation method of knotter jaw alloy material is as follows：
According to melting, insulation, cast, quenching is carried out after chemical analysis dispensing, knotter jaw alloy material is obtained.
Embodiment 2
By percentage to the quality, it contains C 1.5%, Si 0.4% to the knotter jaw alloy material that the present invention is provided,
Mn 0.9%, P 0.02%, S 0.03%, Cr 8%, Mo 2%, W 2%, V 2%, surplus is Fe.
The preparation method of knotter jaw alloy material is as follows：
S21, according to above-mentioned chemical analysis dispensing, be placed in melting in 1480 DEG C of medium frequency induction melting furnace, treat that material is complete
0.1 hour is incubated after portion's fusing, alloying component is homogenized；
S22, material after the melting that is obtained in step S21 is poured into a mould, obtain casting, then induction heating apparatus is to casting
Part carries out surface high frequency impewdance matching processing, after supercooling, obtains knotter jaw alloy material；
Wherein, the power output of surface high frequency impewdance matching processing is 20KW, and temperature is 950 DEG C.
Embodiment 3
By percentage to the quality, it contains C 0.9%, Si 0.35% to the knotter jaw alloy material that the present invention is provided,
Mn 0.6%, P 0.02%, S 0.02%, Cr 7%, Mo 1.5%, W 1.0%, V 1.5%, surplus is Fe.
The preparation method of knotter jaw alloy material is as follows：
S31, according to above-mentioned chemical analysis dispensing, be placed in melting in 1550 DEG C of medium frequency induction melting furnace, treat that material is complete
0.3 hour is incubated after portion's fusing, alloying component is homogenized；
S32, material after the melting that is obtained in step S31 is poured into a mould, obtain casting, then induction heating apparatus is to casting
Part carries out surface high frequency impewdance matching processing, after supercooling, obtains knotter jaw alloy material；
Wherein, the power output of surface high frequency impewdance matching processing is 25KW, and temperature is 1050 DEG C.
Embodiment 4
By percentage to the quality, it contains C 1.2%, Si 0.32% to the knotter jaw alloy material that the present invention is provided,
Mn 0.56%, P 0.02%, S 0.02%, Cr 7.2%, Mo 1.4%, W 1.1%, V 1.5%, surplus is Fe.
The preparation method of knotter jaw alloy material is as follows：
S41, according to above-mentioned chemical analysis dispensing, be placed in melting in 1500 DEG C of medium frequency induction melting furnace, treat that material is complete
0.2 hour is incubated after portion's fusing, alloying component is homogenized；
S42, material after the melting that is obtained in step S41 is poured into a mould, obtain casting, then induction heating apparatus is to casting
Part carries out surface high frequency impewdance matching processing, after supercooling, obtains knotter jaw alloy material；
Wherein, the power output of surface high frequency impewdance matching processing is 22KW, and temperature is 1000 DEG C.
Embodiment 5
By percentage to the quality, it contains C 1.1%, Si 0.33% to the knotter jaw alloy material that the present invention is provided,
Mn 0.62%, P 0.02%, S 0.02%, Cr 7.2%, Mo 1.4%, W 1.2%, V 1.4%, surplus is Fe.
The preparation method of knotter jaw alloy material is as follows：
S51, according to above-mentioned chemical analysis dispensing, be placed in melting in 1500 DEG C of medium frequency induction melting furnace, treat that material is complete
0.2 hour is incubated after portion's fusing, alloying component is homogenized；
S52, material after the melting that is obtained in step S51 is poured into a mould, obtain casting, then induction heating apparatus is to casting
Part carries out surface high frequency impewdance matching processing, after supercooling, obtains knotter jaw alloy material；
Wherein, the power output of surface high frequency impewdance matching processing is 22KW, and temperature is 1000 DEG C.
Embodiment 6
By percentage to the quality, it contains C 1.1%, Si 0.33% to the knotter jaw alloy material that the present invention is provided,
Mn 0.62%, P 0.02%, S 0.02%, Cr 3.2%, Mo 0.5%, W 0.5%, V 1%, surplus is Fe.
The preparation method of knotter jaw alloy material in its preparation method be the same as Example 5.
The hardness of experimental example 1, tensile strength, impact flexibility test
The jaw alloy material provided embodiment 1-5 in the present invention carries out hardness, tensile strength and impact flexibility
Test, and contrasted with 9SiCr steel, its test result is as shown in table 1.
Wherein, case hardness is measured using Rockwell hardness, and HRC is tried to achieve using 150Kg load and diamond cone injector
Hardness, the material higher for hardness, such as：Hardened steel etc..Tensile strength is the drag for characterizing the maximum uniform plastic deformation of material,
Tensile sample is before maximum tension stress is born, and deformation is uniformity, but after exceeding, and metal starts necking down occur to show
As producing and concentrating deformation；For not having the fragile material of (or very little) uniform plastic deformation, the fracture that it reflects material resists
Power.Symbol is Rm (GB/T 228-1987 national regulations tensile strength symbols are σ b), and unit is MPa.Material resists shock loading
Ability, unit be joule/square centimeter (J/cm2) or kilojoule/square metre (KJ/m2)。
The main chemical compositions (wt%) of 9SiCr steel：0.85-0.95 C、1.2-1.6 Si、0.95-1.25 Cr、0.3-
0.6 Mn ,≤0.03 S ,≤0.03 P, surplus are Fe.
The case hardness of table 1, tensile strength, impact flexibility test
It is demonstrated experimentally that the knotter jaw alloy material provided in the embodiment of the present invention, in average surface hardness, average anti-
It is improved in terms of tensile strength and average impact toughness, the material has the tough performance having both, is a kind of preferably knotting
Device jaw material.
In summary, in knotter jaw alloy material provided by the present invention, its chemical composition containing relatively low carbon,
Silicon, chromium, higher molybdenum, vanadium, tungsten.This composition design, reduces normal segregation tendency, while ensure that enough formation carbide
Constituent content, it is to avoid be enriched in the formation of the intergranular carbide of eutectic cell grain boundaries, improve the intensity and toughness of material.Cr and
The reduction of C content, is favorably improved intensity, ductility, toughness and the wearability of material.Relatively low Cr and C amounts, to a certain extent
The formation of carbide is reduced, makes M7C3Type carbide can be refined and is uniformly distributed.Increase Mo, V content can make secondary
The hardness of hardening is improved.Typically, fracture appears in thick M7C3The rent of type carbide, the present invention realized to carbonization
The refinement of thing and dispersed, stress when can suppress carbide rupture from microstructure rises and CrackGrowth, so that
Reach the tough effect having both.Therefore so that the alloy material that the present invention is provided is protected in strength character, and ensures
The uniformity of material property.The hardness of the alloy material can reach HRC58, and tensile strength can reach 1617MPa, impact
Toughness can reach 26.1J/cm2, it is tough to have both, it is a kind of preferable knotter jaw material.Knotter provided by the present invention
The preparation method of jaw alloy material, it is convenient, simple, easily operated to have the advantages that, is adapted to large-scale production.
Although illustrate and describing the present invention with specific embodiment, but it will be appreciated that without departing substantially from the present invention's
Many other changes and modification can be made in the case of spirit and scope.It is, therefore, intended that in the following claims
Including belonging to all such changes and modifications in the scope of the invention.
Claims (9)
1. a kind of knotter jaw alloy material, it is characterised in that by percentage to the quality, it contains C 0.9-1.2%, Si
0.30-0.35%, Mn 0.55-0.65%, P 0.01-0.02%, S 0.02%, Cr 6.5-7.5%, Mo 1.3-1.5%, W
1.0-1.2%, V 1.4-1.5%, surplus are Fe.
2. a kind of preparation method of knotter jaw alloy material according to claim 1, it is characterised in that including following
Step：
According to melting, insulation, cast, quenching is carried out after chemical analysis dispensing, knotter jaw alloy material is obtained.
3. the preparation method of knotter jaw alloy material according to claim 2, it is characterised in that specifically include following
Step：
(1), according to above-mentioned chemical analysis dispensing, melting in medium frequency induction melting furnace is placed in, is incubated after after material all fusing,
Homogenize alloying component；
(2), material after the melting that is obtained in step (1) is poured into a mould, casting is obtained, surface high frequency sense then is carried out to casting
Quenching Treatment is answered, after supercooling, knotter jaw alloy material is obtained.
4. the preparation method of knotter jaw alloy material according to claim 3, it is characterised in that in step (1),
The temperature of the melting is 1480-1550 DEG C.
5. the preparation method of knotter jaw alloy material according to claim 3, it is characterised in that in step (1),
The time of the insulation is 0.1-0.3 hours.
6. the preparation method of knotter jaw alloy material according to claim 3, it is characterised in that in step (2),
Described surface high frequency impewdance matching is carried out using induction heating apparatus to handle.
7. the preparation method of knotter jaw alloy material according to claim 3, it is characterised in that in step (2),
The power output of described surface high frequency impewdance matching processing is 20-25kW.
8. the preparation method of the knotter jaw alloy material according to claim any one of 3-7, it is characterised in that in step
Suddenly in (2), the temperature of described surface high frequency impewdance matching processing is 950-1050 DEG C.
9. the preparation method of knotter jaw alloy material according to claim 8, it is characterised in that in step (2),
The mode of the cooling cools down for air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510925659.2A CN105420612B (en) | 2015-12-14 | 2015-12-14 | A kind of knotter jaw alloy material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510925659.2A CN105420612B (en) | 2015-12-14 | 2015-12-14 | A kind of knotter jaw alloy material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4168159A (en) * | 1978-02-28 | 1979-09-18 | Latrobe Steel Company | High speed steels with phosphorus for improved cutting performance |
| CN103031496A (en) * | 2013-01-22 | 2013-04-10 | 江苏钢宝轧辊有限公司 | Cast steel roller and fabrication technology thereof |
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| JP2003055743A (en) * | 2001-08-17 | 2003-02-26 | Daido Steel Co Ltd | Steel for cold die having excellent machinability |
| SE524583C2 (en) * | 2002-12-12 | 2004-08-31 | Erasteel Kloster Ab | Composite metal product and process for making such |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4168159A (en) * | 1978-02-28 | 1979-09-18 | Latrobe Steel Company | High speed steels with phosphorus for improved cutting performance |
| CN103031496A (en) * | 2013-01-22 | 2013-04-10 | 江苏钢宝轧辊有限公司 | Cast steel roller and fabrication technology thereof |
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