CN107964627A - A kind of high tenacity tow arm - Google Patents

A kind of high tenacity tow arm Download PDF

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Publication number
CN107964627A
CN107964627A CN201711218520.XA CN201711218520A CN107964627A CN 107964627 A CN107964627 A CN 107964627A CN 201711218520 A CN201711218520 A CN 201711218520A CN 107964627 A CN107964627 A CN 107964627A
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China
Prior art keywords
whisker
steel
tow arm
high tenacity
quality
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CN201711218520.XA
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Inventor
李光龙
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NINGBO YINZHOU LONGTENG TOOLS FACTORY
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NINGBO YINZHOU LONGTENG TOOLS FACTORY
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Priority to CN201711218520.XA priority Critical patent/CN107964627A/en
Publication of CN107964627A publication Critical patent/CN107964627A/en
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/14—Treatment of metallic powder
    • B22F1/142—Thermal or thermo-mechanical treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/02—Compacting only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10—Sintering only
    • B22F3/1003—Use of special medium during sintering, e.g. sintering aid
    • B22F3/1007—Atmosphere
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60D—VEHICLE CONNECTIONS
    • B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
    • B60D1/24—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions
    • 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
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
    • C21D7/04—Modifying the physical properties of iron or steel by deformation by cold working of the surface
    • C21D7/06—Modifying the physical properties of iron or steel by deformation by cold working of the surface by shot-peening or the like
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • C22C33/0207—Using a mixture of prealloyed powders or a master alloy
    • C22C33/0228—Using a mixture of prealloyed powders or a master alloy comprising other non-metallic compounds or more than 5% of graphite
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps

Abstract

The present invention relates to a kind of tow arm, and in particular to a kind of high tenacity tow arm, belongs to mechanical material field.High tenacity tow arm of the present invention includes main body and the K coated in alloy steel surface made of steel alloy2Ti6O13Whisker layer, the steel alloy and K2Ti6O13Zinc oxide coating is further included between whisker layer.Wherein, the steel alloy includes the component of following mass percent：C：0.95 1.05%, Si：0.15 0.35%, Mn：0.2 0.4%, Cr：1.3 1.65%, Cu：0.2 0.25%, cellulose：1.2 1.5%, S：≤ 0.02%, P：≤ 0.027%, surplus Fe.High tenacity tow arm of the present invention is using the rational steel alloy of compatibility and combines specific preparation method, so as to get tow arm there is high tenacity, and elongation and intensity are excellent.

Description

A kind of high tenacity tow arm
Invention field
The present invention relates to a kind of tow arm, and in particular to a kind of high tenacity tow arm, belongs to mechanical material field.
Background technology
Tow arm is used for tractor and connects by tractor.Since different vehicle ball covers is of different sizes, tow arm is normal It is dismountable to be designed to tow ball, and when use is conveniently replaceable the tow ball of different size., can during the problem of at the same time bringing The tow ball of dismounting has rotation phenomenon when in use, when frequently rotating between tow ball and band iron, both can be caused it Between matching property decline, thread damage, bolt and nut assembling loosen, and produce security risk, service life shortens.
The content of the invention
The present invention is in view of the above-mentioned problems existing in the prior art, it is proposed that a kind of material is reliable, good toughness, service life length Tow arm.
The purpose of the present invention is realized by following technical solution：A kind of high tenacity tow arm, the high tenacity tow arm Including the main body made of steel alloy and the K coated in alloy steel surface2Ti6O13Whisker layer, the steel alloy and K2Ti6O13 Zinc oxide coating is further included between whisker layer.
The present invention in alloy steel surface by coating K2Ti6O13Whisker layer, K2Ti6O13Whisker is by TiO6Octahedron passes through It is coplanar and rib links the mono-crystlling fibre of wind-tunnel shape structure altogether, its intensity close to perfect crystal theoretical strength, because potassium from Son is occupy in wind-tunnel, is wrapped by construction of wind tunnel, is allowed to separate with environment, can not also break through these even if potassium ion in the solution The wrapping layer of wind-tunnel shape and be in chemical inertness, K2Ti6O13Whisker has excellent physical and chemical properties, especially with excellent Corrosion resistance, heat-resisting thermal insulation, wear-resisting lubricity, toughness it is high, therefore the present invention passes through and coats K in steel surface2Ti6O13It is brilliant It must can obtain the tow arm of high tenacity.
In addition, the present invention is in steel alloy and K2Ti6O13Include Zinc oxide coating among whisker layer, can be with K2Ti6O13Whisker Reaction generation ZnK2O2Coating, can improve K2Ti6O13Wetability between whisker and steel alloy, meanwhile, Zinc oxide coating changes Steel alloy and K2Ti6O13The interface state of whisker, the mechanical performance of the tow arm improved.
In a kind of above-mentioned high tenacity tow arm, the steel alloy includes the component of following mass percent：C：0.95- 1.05%, Si：0.15-0.35%, Mn：0.2-0.4%, Cr：1.3-1.65%, Cu：0.2-0.25%, cellulose：1.2- 1.5%, S：≤ 0.02%, P：≤ 0.027%, surplus Fe.
In high tenacity tow arm of the present invention, by adding Si in steel alloy, it is possible to increase the quenching degree of steel and resist back Fire, it is favourable to the comprehensive performance particularly elasticity modulus of steel, the corrosion resistance of steel under field conditions (factors) can also be strengthened, but Si too high levels in steel alloy, then it is unfavorable to the welding performance of steel, weldquality is damaged, and easily lead to cold short therefore of the invention Select the Si of above-mentioned content.
In addition, deoxidier and desulfurizing agent that manganese has been, significantly improve quenching degree.Manganese influences the hardness and impact toughness of steel Very big, hardness rises with the raising of manganese content, and impact toughness then declines therewith.Manganese and iron form solid solution, improve iron in steel The hardness and strength of ferritic and austenite；It is again at the same time carbide former, a part of iron atom is substituted into cementite, Manganese, due to reducing critical transition temperature, plays the role of refining pearlite, also plays indirectly and improve pearlitic steel intensity in steel Effect.Manganese can also significantly reduce the heart temperature and austenite decomposition speed of steel.But also have that it is unfavorable as alloying element manganese One side.When manganese content is higher, there is the tendency for being roughened crystalline grain of steel, and increase steel belt roof bolt brittleness sensitiveness.Smelt casting and Forging rolling postcooling at that time, does not make easily steel produce white point.
It is another object of the present invention to provide a kind of preparation method of above-mentioned high tenacity tow arm, the preparation method Body includes the following steps：
Premix：Cu, Fe in steel alloy raw material and quality is dry-mixed for the stearic acid progress of alloy steel quality 0.7-0.8% Obtain premixed steel powder；
Ball milling：The residual components of steel alloy and premixed steel powder are placed on planetary ball mill and carry out mechanical alloying；
Hydrogen annealing：Powder after ball milling carries out hydrogen annealing in sintering furnace, and temperature is 400-420 DEG C, time 3- 3.5h；
Whisker disperses：By K2Ti6O13Whisker is placed in stirring and large power supersonic 30-40min in deionized water；
Whisker coats Zinc oxide coating：Stir K2Ti6O13Zn (NO3) is added after whisker2Solution is simultaneously warming up to 200-205 DEG C, Ammonium hydroxide adjusts Ph to 7-7.5；
It is compressing：By the powder after annealing and the K after coating Zinc oxide coating2Ti6O13Whisker is 600- in pressure It is compressing on the die forming machine of 650MPa；
Vacuum-sintering：After compressing in sintering temperature is 1300-1350 DEG C, 2-2.5h is sintered；
Post processing：Carry out high energy micron bead and obtain high tenacity tow arm finished product.
For the present invention by being pre-mixed to Cu, Fe powder, enabling to the powder of steel alloy has high uniformity and one Cause property, will not occur the segregation of alloying element.Wherein stearic acid is added as lubricant, is subtracted between powder with respect to the resistance slided Small, the good fluidity of powder, apparent density is relatively large.Cellulose is added as binding agent, can spread over alloy member well Plain surface, forms one layer of close clad, has the function that stronger adhesion between two-phase, closed under high shearing force Gold element powder is not readily separated with binding agent, can have higher bonding rate, so that the uniform shape of alloy composition, uniformity be made Increase.
In a kind of above-mentioned preparation method of tow arm, the ratio of grinding media to material of the mechanical milling process is 20-22:1, Ball-milling Time is 48-50h, ball milling rotation rotating speed are 220-240r/min, per 0.5-1h rotations commutation once.
In a kind of above-mentioned preparation method of high tenacity tow arm, the K2Ti6O13The quality of whisker is alloy steel quality 1.2-2.4%.
In a kind of above-mentioned preparation method of high tenacity tow arm, the Zn (NO3)2The concentration of solution is 25-28%, Zn (NO3)2Quality be K2Ti6O13The 10-11% of whisker quality.The present invention is by ammonia water titration Ph, and at the initial stage of titration, ammonium hydroxide is molten Liquid is less, and the concentration of OH- is relatively low, the Zn in zinc solution2+It is rapid in connection, generation Zn (OH)2Precipitation, until in salting liquid Zn2+Precipitated completely, continue that ammonium hydroxide is added dropwise, the superfluous NH not being completely dissolved occur in solution3Molecule, NH3Molecular build-up To the precipitation Zn (OH) in a certain concentration and solution2Generation complex reaction, sediment are completely converted into complex compound [Zn (NH3)4]2+, Titrate later stage, generation complex [ZnO2]2-Continue to be wrapped in K2Ti6O13Whisker surface, complex compound directly decomposes after heating K is coated on into ZnO2Ti6O13Whisker surface forms Zinc oxide coating.
In a kind of above-mentioned preparation method of high tenacity tow arm, by adding Zn (NO3)2Solution K2Ti6O13The temperature of whisker Degree rises to 200-205 DEG C, and the Zinc oxide coating surface particles degree increase enabled to, particle size increase, increasing number, applies Cover it is evengranular be distributed in whisker surface, particle degree of refinement is high, and granule-morphology shows relatively regular cubic pieces.
In a kind of above-mentioned preparation method of tow arm, the injection pressure of the high energy micron bead is 0.7- 0.9MPa, injecting time 5-7min, blasting media are the Brown Alundum shot-peening of 30-35 mesh.When being handled by high-energy shot, at a high speed Shot-peening is ejected into alloy steel surface, and erosion occurs, and rear ejection departs from, and some of which is directly escaped from pressure field border, but still meeting There is part shot-peening to be influenced by high-speed gas pressure, will return to, erosion sample surfaces and depart from again, so repeatedly, warp The repeat impact of shot-peening is crossed, high-energy shot processing forms more micron order pit in alloy steel surface, and forms villiform Nanostructured, strengthen the roughness on surface, also increase the quantity of the catch of air, therefore the hydrophobicity of alloy steel surface can be improved Can, so as to improve the performance of obtained tow arm.
Compared with prior art, the invention has the advantages that：
1st, high tenacity tow arm of the present invention in alloy steel surface by coating K2Ti6O13Whisker layer and zinc layers, obtain high-ductility The tow arm of property；
2nd, this hair high tenacity tow arm in Alloy steel material by adding metallic element, it is possible to increase the fatigue of steel resists Power, reduces steel alloy to the sensitiveness of notch, so as to significantly improve the thermoplasticity of steel, reduces the crack-sensitivity of steel casting process Property；
3rd, high tenacity tow arm of the present invention using the rational steel alloy of compatibility and combines specific preparation method, so as to get Tow arm has high tenacity, and elongation and intensity are excellent.
Embodiment
It is the embodiment of the present invention below, technical scheme is further described, but the present invention It is not limited to these embodiments.
Embodiment 1
Premix：Cu, Fe in steel alloy raw material and quality are subjected to dry-mixed obtain in advance for the stearic acid of alloy steel quality 0.7% Mix comminuted steel shot；Wherein, the steel alloy includes the component of following mass percent：C：0.95%, Si：0.15%, Mn：0.2%, Cr：1.3%, Cu：0.2%, cellulose：1.2%, S：0.02%, P：0.02%, surplus Fe；
Ball milling：The residual components of steel alloy and premixed steel powder are placed on planetary ball mill and carry out mechanical alloying； The ratio of grinding media to material of the mechanical milling process is 20:1, Ball-milling Time 48h, ball milling rotation rotating speed are 220r/min, per 0.5h from conversion To once；
Hydrogen annealing：Powder after ball milling carries out hydrogen annealing in sintering furnace, and temperature is 400 DEG C, time 3h；
Whisker disperses：By K2Ti6O13Whisker is placed in stirring and large power supersonic 30min in deionized water；The K2Ti6O13 The quality of whisker is the 1.2% of alloy steel quality；
Whisker coats Zinc oxide coating：Stir K2Ti6O13Zn (NO are added after whisker3)2Solution is simultaneously warming up to 200 DEG C, ammonium hydroxide Adjust Ph to 7；Zn (the NO3)2The concentration of solution is 25%, Zn (NO3)2Quality be K2Ti6O13The 10% of whisker quality.
It is compressing：By the powder after annealing and the K after coating Zinc oxide coating2Ti6O13Whisker is 600MPa in pressure Die forming machine on it is compressing；
Vacuum-sintering：After compressing in sintering temperature is 1300 DEG C, 2h is sintered；
Post processing：Carry out high energy micron bead and obtain high tenacity tow arm finished product；The high energy micron bead Injection pressure is 0.7MPa, and injecting time 5min, blasting media is the Brown Alundum shot-peening of 30 mesh.
Embodiment 2
Premix：Cu, Fe in steel alloy raw material and quality are subjected to dry-mixed obtain for the stearic acid of alloy steel quality 0.72% Premixed steel powder；Wherein, the steel alloy includes the component of following mass percent：C：0.98%, Si：0.2%, Mn： 0.22%, Cr：1.4%, Cu：0.21%, cellulose：1.25%, S：0.01%, P：0.01%, surplus Fe；
Ball milling：The residual components of steel alloy and premixed steel powder are placed on planetary ball mill and carry out mechanical alloying； The ratio of grinding media to material of the mechanical milling process is 20.5:1, Ball-milling Time 48.5h, ball milling rotation rotating speed are 225r/min, per 0.6h certainly Change to once；
Hydrogen annealing：Powder after ball milling carries out hydrogen annealing in sintering furnace, and temperature is 405 DEG C, time 3.1h；
Whisker disperses：By K2Ti6O13Whisker is placed in stirring and large power supersonic 32min in deionized water；The K2Ti6O13 The quality of whisker is the 1.5% of alloy steel quality；
Whisker coats Zinc oxide coating：Stir K2Ti6O13Zn (NO3) is added after whisker2Solution is simultaneously warming up to 201 DEG C, ammonium hydroxide Adjust Ph to 7.1；Zn (the NO3)2The concentration of solution is 26%, Zn (NO3)2Quality be K2Ti6O13Whisker quality 10.2%.
It is compressing：By the powder after annealing and the K after coating Zinc oxide coating2Ti6O13Whisker is 610MPa in pressure Die forming machine on it is compressing；
Vacuum-sintering：After compressing in sintering temperature is 1310 DEG C, 2.1h is sintered；
Post processing：Carry out high energy micron bead and obtain high tenacity tow arm finished product；The high energy micron bead Injection pressure is 0.75MPa, and injecting time 5.5min, blasting media is the Brown Alundum shot-peening of 31 mesh.
Embodiment 3
Premix：Cu, Fe in steel alloy raw material and quality is dry-mixed for the stearic acid progress of alloy steel quality 0.7-0.8% Obtain premixed steel powder；Wherein, the steel alloy includes the component of following mass percent：C：1%, Si：0.25%, Mn：0.2- 0.4%, Cr：1.45%, Cu：0.22%, cellulose：1.35%, S：0.01%, P：0.025%, surplus Fe；
Ball milling：The residual components of steel alloy and premixed steel powder are placed on planetary ball mill and carry out mechanical alloying； The ratio of grinding media to material of the mechanical milling process is 21:1, Ball-milling Time 49h, ball milling rotation rotating speed are 230r/min, per 0.75h from conversion To once；
Hydrogen annealing：Powder after ball milling carries out hydrogen annealing in sintering furnace, and temperature is 410 DEG C, time 3.3h；
Whisker disperses：By K2Ti6O13Whisker is placed in stirring and large power supersonic 35min in deionized water；The K2Ti6O13 The quality of whisker is the 1.8% of alloy steel quality；
Whisker coats Zinc oxide coating：Stir K2Ti6O13Zn (NO3) is added after whisker2Solution is simultaneously warming up to 203 DEG C, ammonium hydroxide Adjust Ph to 7.3；Zn (the NO3)2The concentration of solution is 26.5%, Zn (NO3)2Quality be K2Ti6O13Whisker quality 10.5%.
It is compressing：By the powder after annealing and the K after coating Zinc oxide coating2Ti6O13Whisker is 625MPa in pressure Die forming machine on it is compressing；
Vacuum-sintering：After compressing in sintering temperature is 1325 DEG C, 2.3h is sintered；
Post processing：Carry out high energy micron bead and obtain high tenacity tow arm finished product；The high energy micron bead Injection pressure is 0.8MPa, and injecting time 6min, blasting media is the Brown Alundum shot-peening of 33 mesh.
Embodiment 4
Premix：Cu, Fe in steel alloy raw material and quality are subjected to dry-mixed obtain for the stearic acid of alloy steel quality 0.78% Premixed steel powder；Wherein, the steel alloy includes the component of following mass percent：C：1%, Si：0.3%, Mn：0.35%, Cr：1.55%, Cu：0.23%, cellulose：1.45%, S：0.01%, P：0.025%, surplus Fe；
Ball milling：The residual components of steel alloy and premixed steel powder are placed on planetary ball mill and carry out mechanical alloying； The ratio of grinding media to material of the mechanical milling process is 21.5:1, Ball-milling Time 49.5h, ball milling rotation rotating speed are 235r/min, per 0.9h certainly Change to once；
Hydrogen annealing：Powder after ball milling carries out hydrogen annealing in sintering furnace, and temperature is 415 DEG C, time 3.4h；
Whisker disperses：By K2Ti6O13Whisker is placed in stirring and large power supersonic 38min in deionized water；The K2Ti6O13 The quality of whisker is the 2% of alloy steel quality；
Whisker coats Zinc oxide coating：Stir K2Ti6O13Zn (NO are added after whisker3)2Solution is simultaneously warming up to 204 DEG C, ammonium hydroxide Adjust Ph to 7.4；Zn (the NO3)2The concentration of solution is 27%, Zn (NO3)2Quality be K2Ti6O13Whisker quality 10.8%.
It is compressing：By the powder after annealing and the K after coating Zinc oxide coating2Ti6O13Whisker is 640MPa in pressure Die forming machine on it is compressing；
Vacuum-sintering：After compressing in sintering temperature is 1340 DEG C, 2.4h is sintered；
Post processing：Carry out high energy micron bead and obtain high tenacity tow arm finished product；The high energy micron bead Injection pressure is 0.85MPa, and injecting time 6.5min, blasting media is the Brown Alundum shot-peening of 34 mesh.
Embodiment 5
Premix：Cu, Fe in steel alloy raw material and quality are subjected to dry-mixed obtain in advance for the stearic acid of alloy steel quality 0.8% Mix comminuted steel shot；Wherein, the steel alloy includes the component of following mass percent：C：1.05%, Si：0.35%, Mn：0.4%, Cr：1.65%, Cu：0.25%, cellulose：1.5%, S：0.012%, P：0.02%, surplus Fe；
Ball milling：The residual components of steel alloy and premixed steel powder are placed on planetary ball mill and carry out mechanical alloying； The ratio of grinding media to material of the mechanical milling process is 22:1, Ball-milling Time 50h, ball milling rotation rotating speed are 240r/min, per 1h rotations commutation Once；
Hydrogen annealing：Powder after ball milling carries out hydrogen annealing in sintering furnace, and temperature is 420 DEG C, time 3.5h；
Whisker disperses：By K2Ti6O13Whisker is placed in stirring and large power supersonic 40min in deionized water；The K2Ti6O13 The quality of whisker is the 2.4% of alloy steel quality；
Whisker coats Zinc oxide coating：Stir K2Ti6O13Zn (NO3) is added after whisker2Solution is simultaneously warming up to 205 DEG C, ammonium hydroxide Adjust Ph to 7.5；Zn (the NO3)2The concentration of solution is 28%, Zn (NO3)2Quality be K2Ti6O13The 11% of whisker quality.
It is compressing：By the powder after annealing and the K after coating Zinc oxide coating2Ti6O13Whisker is 650MPa in pressure Die forming machine on it is compressing；
Vacuum-sintering：After compressing in sintering temperature is 1350 DEG C, 2.5h is sintered；
Post processing：Carry out high energy micron bead and obtain high tenacity tow arm finished product；The high energy micron bead Injection pressure is 0.9MPa, and injecting time 7min, blasting media is the Brown Alundum shot-peening of 35 mesh.
Embodiment 6
With differing only in for embodiment 1, cellulose is not contained in steel alloy used in the embodiment high tenacity tow arm, its He is same as Example 1, and details are not described herein again.
Embodiment 7
With differing only in for embodiment 1, Cu is not contained in steel alloy used in the embodiment high tenacity tow arm, other with Embodiment 1 is identical, and details are not described herein again.
Comparative example 1
With differing only in for embodiment 1, which is made of common commercial alloys steel, other Same as Example 1, details are not described herein again.
Comparative example 2
With differing only in for embodiment 1, which does not coat zinc layers, other Same as Example 1, details are not described herein again.
Comparative example 3
With differing only in for embodiment 1, which does not coat K2Ti6O13It is brilliant Palpus layer, other are same as Example 1, and details are not described herein again.
Comparative example 4
With differing only in for embodiment 1, which does not coat K2Ti6O13It is brilliant Palpus layer and zinc layers, other are same as Example 1, and details are not described herein again.
Comparative example 5
With differing only in for embodiment 1, which coats common coating, other Same as Example 1, details are not described herein again.
High tenacity tow arm in embodiment 1-7 and comparative example 1-5 is subjected to performance detection, testing result is as shown in table 1.
Table 1：High tenacity tow arm test result in embodiment 1-7 and comparative example 1-5
It can be seen from the results above that high tenacity tow arm of the present invention in alloy steel surface by coating K2Ti6O13Whisker Layer and zinc layers, obtain the tow arm of high tenacity；Meanwhile this hair high tenacity tow arm in Alloy steel material by adding metal Element, it is possible to increase the fatigue resistance of steel, reduces sensitiveness of the steel alloy to notch, so as to significantly improve the thermoplasticity of steel, drops The low crack sensitivity of steel casting process；
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology belonging to the present invention is led The technical staff in domain can do various modifications or supplement to described specific embodiment or substitute in a similar way, but simultaneously The spirit or beyond the scope of the appended claims of the present invention is not deviated by.
It is skilled to this area although having been made a detailed description to the present invention and being cited some specific embodiments For technical staff, as long as it is obvious that can make various changes or correct without departing from the spirit and scope of the present invention.

Claims (7)

  1. A kind of 1. high tenacity tow arm, it is characterised in that the high tenacity tow arm include made of steel alloy main body and K coated in alloy steel surface2Ti6O13Whisker layer, the steel alloy and K2Ti6O13Zinc oxide coating is further included between whisker layer.
  2. 2. a kind of high tenacity tow arm according to claim 1, it is characterised in that the steel alloy includes following quality hundred Divide the component of ratio：C：0.95-1.05%, Si：0.15-0.35%, Mn：0.2-0.4%, Cr：1.3-1.65%, Cu：0.2- 0.25%, cellulose：1.2-1.5%, S：≤ 0.02%, P：≤ 0.027%, surplus Fe.
  3. 3. a kind of preparation method of high tenacity tow arm as claimed in claim 1, it is characterised in that the preparation method is specific Include the following steps：
    Premix：Cu, Fe in steel alloy raw material and quality are subjected to dry-mixed obtain in advance for the stearic acid of alloy steel quality 0.7-0.8% Mix comminuted steel shot；
    Ball milling：The residual components of steel alloy and premixed steel powder are placed on planetary ball mill and carry out mechanical alloying；
    Hydrogen annealing：Powder after ball milling carries out hydrogen annealing in sintering furnace, and temperature is 400-420 DEG C, time 3-3.5h；
    Whisker disperses：By K2Ti6O13Whisker is placed in stirring and large power supersonic 30-40min in deionized water；
    Whisker coats Zinc oxide coating：Stir K2Ti6O13Zn (NO are added after whisker3)2Solution is simultaneously warming up to 200-205 DEG C, ammonium hydroxide Adjust Ph to 7-7.5；
    It is compressing：By the powder after annealing and the K after coating Zinc oxide coating2Ti6O13Whisker is 600-650MPa's in pressure It is compressing on die forming machine；
    Vacuum-sintering：After compressing in sintering temperature is 1300-1350 DEG C, 2-2.5h is sintered；
    Post processing：Carry out high energy micron bead and obtain high tenacity tow arm finished product.
  4. 4. the preparation method of a kind of high tenacity tow arm according to claim 3, it is characterised in that the mechanical milling process Ratio of grinding media to material is 20-22:1, Ball-milling Time 48-50h, ball milling rotation rotating speed are 220-240r/min, per 0.5-1h rotations commutation Once.
  5. A kind of 5. preparation method of high tenacity tow arm according to claim 3, it is characterised in that the K2Ti6O13Whisker Quality be alloy steel quality 1.2-2.4%.
  6. A kind of 6. preparation method of high tenacity tow arm according to claim 3, it is characterised in that the Zn (NO3)2It is molten The concentration of liquid is 25-28%, Zn (NO3)2Quality be K2Ti6O13The 10-11% of whisker quality.
  7. A kind of 7. preparation method of high tenacity tow arm according to claim 3, it is characterised in that the high energy micron spray The injection pressure of ball processing is 0.7-0.9MPa, and injecting time 5-7min, blasting media is the Brown Alundum shot-peening of 30-35 mesh.
CN201711218520.XA 2017-11-28 2017-11-28 A kind of high tenacity tow arm Pending CN107964627A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1056132A (en) * 1990-04-30 1991-11-13 通用电气公司 Steel work and production method thereof with the two coatings of protectiveness
CN102343436A (en) * 2011-09-23 2012-02-08 常熟市华德粉末冶金有限公司 In-situ sintered dispersion particle-reinforced warm-compacting powder metallurgy material and preparation method thereof
CN102392195A (en) * 2011-12-15 2012-03-28 钢铁研究总院 High-strength high-toughness nuclear power pressure vessel forging steel and its manufacturing method
CN102534432A (en) * 2012-01-10 2012-07-04 清华大学 Method for manufacturing and tempering bainite wear-resistant steel and steel pipe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1056132A (en) * 1990-04-30 1991-11-13 通用电气公司 Steel work and production method thereof with the two coatings of protectiveness
CN102343436A (en) * 2011-09-23 2012-02-08 常熟市华德粉末冶金有限公司 In-situ sintered dispersion particle-reinforced warm-compacting powder metallurgy material and preparation method thereof
CN102392195A (en) * 2011-12-15 2012-03-28 钢铁研究总院 High-strength high-toughness nuclear power pressure vessel forging steel and its manufacturing method
CN102534432A (en) * 2012-01-10 2012-07-04 清华大学 Method for manufacturing and tempering bainite wear-resistant steel and steel pipe

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