CN105970149B - A kind of preparation method of low-carbon high-tungsten alloy steel and low-carbon high-tungsten alloy steel ontology - Google Patents

A kind of preparation method of low-carbon high-tungsten alloy steel and low-carbon high-tungsten alloy steel ontology Download PDF

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CN105970149B
CN105970149B CN201610569374.4A CN201610569374A CN105970149B CN 105970149 B CN105970149 B CN 105970149B CN 201610569374 A CN201610569374 A CN 201610569374A CN 105970149 B CN105970149 B CN 105970149B
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alloy steel
tungsten alloy
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tungsten
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CN105970149A (en
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钟黎声
张曦
许云华
燕映霖
赵梓源
赵娜娜
蔡小龙
陈利萍
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Xian University of Technology
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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/20—Carburising
    • C23C8/22—Carburising of ferrous surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/36—Removing material
    • B23K26/38—Removing material by boring or cutting
    • B23K26/382—Removing material by boring or cutting by boring
    • B23K26/389—Removing material by boring or cutting by boring of fluid openings, e.g. nozzles, jets
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/02—Pretreatment of the material to be coated
    • 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
    • C21D2211/004—Dispersions; Precipitations
    • 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

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Abstract

The invention discloses the preparation methods of a kind of low-carbon high-tungsten alloy steel and low-carbon high-tungsten alloy steel ontology, are related to low-carbon high-tungsten alloy steel ontology field, and the low-carbon high-tungsten alloy steel ontology includes：Low-carbon high-tungsten alloy steel ontology, the low-carbon high-tungsten alloy steel body surface are equipped with multiple recess tubular bodies, and the inner surface of the low-carbon high-tungsten alloy steel body surface and the recess tubular body is equipped with tungsten carbide enhancement layer.The present invention can effectively increase the surface recombination thickness of low-carbon high-tungsten alloy steel ontology by tungsten carbide enhancement layer, improve the wear-resisting property and toughness of low-carbon high-tungsten alloy steel ontology.

Description

A kind of preparation method of low-carbon high-tungsten alloy steel and low-carbon high-tungsten alloy steel ontology
Technical field
The present invention relates to low-carbon high-tungsten alloy steel ontology field, in particular to a kind of low-carbon high-tungsten alloy steel and low-carbon The preparation method of high-tungsten alloy steel ontology.
Background technique
Low-carbon high-tungsten alloy steel ontology has high hard as one of most important heat-resisting alloy steel and high-speed tool steel It the advantages that degree, high-wearing feature and high-fire resistance, is widely used in industry fields such as cutter, metallurgy.But low-carbon high-tungsten alloy steel The intensity of ontology declines obviously with becoming larger for size, directly affects its service life, limits application range.In order to overcome Drawbacks described above generallys use tungsten carbide enhancing steel-based composite material to replace low-carbon high-tungsten alloy steel ontology, but existing carbon Change tungsten enhancing steel-based composite material enhanced form enhanced with particle based on, preparation method is with liquid casting infiltration, powder metallurgy Based on method, these methods have many advantages, such as it is at low cost, large-scale industrial production may be implemented and part shape is unrestricted.But Be tungsten carbide enhancing steel-based composite material preparation process there are following outstanding problems：
1) traditional technology of infiltration casting can only carry out the compound or surface recombination in part to workpiece；
2) in powder metallurgical technique, largely using bonding agent bonding or fixed alloy powder, cause to exist in composite material The defects of a large amount of stomatas, slag inclusion；
3) only the external intergranular gap of stiffened matter carries out casting infiltration or sintering to recombination process, is between hard particles and steel matrix Non- metallurgical bonding, binding force is very weak, and particle is easy to fall off；
4) traditional technology of infiltration casting and powder metallurgical technique can only realize Dispersed precipitate particle enhanced steel iron base composite material Preparation, cannot obtain other more preferably reinforcement distribution modes, and uncontrollable to tungsten carbide particles sized and distribution mode.
In summary, tungsten carbide in the prior art enhancing steel-based composite material has that compound ability is poor, tungsten carbide The disadvantages of grain is easy to fall off with tungsten carbide particles sized and uncontrollable distribution mode.
Summary of the invention
In view of this, the present invention provides the preparation method of a kind of low-carbon high-tungsten alloy steel and low-carbon high-tungsten alloy steel ontology, Which solve the compound abilities of existing composite material, and poor, tungsten carbide particle is easy to fall off and tungsten carbide particles sized and distribution mode The problems such as uncontrollable.
The present invention is solved the above problems by following technological means：
A kind of low-carbon high-tungsten alloy steel of the invention, including：Low-carbon high-tungsten alloy steel ontology, the low-carbon high-tungsten alloy steel Body surface is equipped with multiple recess tubular bodies, and the interior table of the low-carbon high-tungsten alloy steel body surface and the recess tubular body Face is equipped with tungsten carbide enhancement layer.
Wherein, low-carbon high-tungsten alloy steel ontology can be the quality of the carbon such as xW18Cr4V, xW14Cr4VMn, xW9Mo3Cr4V Tungsten system heat-resisting alloy steel of the score less than 0.5%, W content 6%~18%.
Further, the spacing between the two neighboring recess tubular body is 25 μm~1000 μm, the recess tubular body Caliber be 10 μm~40 μm, it is described recess tubular body depth be less than or equal to 20 μm.
Further, the tungsten carbide enhancement layer with a thickness of 5 μm~15 μm, the tungsten carbide enhancement layer is by being evenly distributed on Tungsten carbide particle composition on the low-carbon high-tungsten alloy steel body surface and the recess tubular body inner surface, the tungsten carbide The partial size of particle is 0.5 μm~3.0 μm, and the volume fraction of the tungsten carbide particle is 70%~95%.
A kind of low-carbon high-tungsten alloy steel of the invention has the advantages that：
The present invention provides a kind of low-carbon high-tungsten alloy steel, including low-carbon high-tungsten alloy steel ontology, low-carbon high-tungsten alloy steel Body surface is equipped with multiple recess tubular bodies, and the inner surface of low-carbon high-tungsten alloy steel body surface and recess tubular body is equipped with Tungsten carbide enhancement layer, in this way, the surface recombination that can effectively increase low-carbon high-tungsten alloy steel ontology by tungsten carbide enhancement layer is thick Degree, improves the wear-resisting property and heat resistance of low-carbon high-tungsten alloy steel ontology.
A kind of preparation method of low-carbon high-tungsten alloy steel of the invention, includes the following steps：Step 1：The high tungsten of low-carbon is closed The surface of golden steel ontology is handled；Step 2：Using laser-beam drilling machine to the low-carbon high-tungsten alloy steel ontology after surface treatment into Row punching, and pickling is successively carried out to the low-carbon high-tungsten alloy steel ontology after punching, is washed to neutral, ultrasonic cleaning, it obtains Low-carbon high-tungsten alloy steel ontology with recess tubular body；Step 3：To there is the low-carbon high-tungsten alloy steel ontology of recess tubular body It is placed in vacuum cementation furnace under preset temperature and carries out carburizing, and kept the temperature according to preset time, obtained with tungsten carbide The low-carbon high-tungsten alloy steel ontology of layer；Step 4：Low-carbon high-tungsten alloy steel ontology with carbide layers is successively carried out to heating to quench Fire and tempering, obtain the low-carbon high-tungsten alloy steel with tungsten carbide enhancement layer.
Further, the surface by low-carbon high-tungsten alloy steel ontology of the step 1 handle and specifically includes：It will be described low The surface of carbon high-tungsten alloy steel ontology is cleaned using acetone.
Further, the low-carbon high-tungsten alloy steel ontology after surface treatment is carried out using laser-beam drilling machine in the step 2 Punching specifically includes：Under vacuum condition or inert gas shielding, using laser-beam drilling machine to the high tungsten of low-carbon after surface treatment Steel alloy ontology is punched.
Further, the liquid that pickling uses in the step 2 includes volumetric concentration for the hydrochloric acid of 300ml/L, alternatively, volume Concentration is the phosphoric acid of 60ml/L, alternatively, volumetric concentration is the hydrogen peroxide of 120ml/L, alternatively, volumetric concentration is the hydrogen of 300ml/L Fluoric acid, alternatively, volumetric concentration is the sulfuric acid of 200ml/L；The ultrasonic cleaning specifically includes：Surpassed using ethyl alcohol or acetone Sound wave cleaning.
Further, the mass fraction of carbon is 0.9%~1.0% in the vacuum cementation furnace of the step 3, the vacuum carburization Vacuum degree in furnace is less than or equal to 1 × 104Pa, the preset temperature be 920 DEG C~940 DEG C, the preset time be 10min~ 35min, it is described have recess tubular body low-carbon high-tungsten alloy steel ontology unit area in carburizing mass fraction be less than etc. In 0.5%.
Further, the temperature of heating quenching is 780 DEG C~820 DEG C in the step 4, and the temperature of tempering is 300 DEG C~420 ℃。
A kind of preparation method of low-carbon high-tungsten alloy steel of the invention has the advantages that：
The present invention provides a kind of preparation methods of low-carbon high-tungsten alloy steel, firstly, protecting in vacuum condition or inert gas Under shield, several recess tubular bodies are formed on the surface of low-carbon high-tungsten alloy steel ontology using laser-beam drilling machine, and can be to recess Spacing, the depth of tubular body that is recessed and caliber between tubular body are adjusted；Then, by low-carbon high-tungsten alloy steel ontology pre- If carrying out carburizing and heat preservation under temperature and preset time, so that tungsten atom and carbon atom react generation carbonization under solid state temperature Tungsten, and can realize and be carbonized on low-carbon high-tungsten alloy steel ontology according to the diffusion for the recess tubular body limitation tungsten carbide accomplished fluently Tungsten increases the preparation of layer, can effectively increase the surface recombination thickness of low-carbon high-tungsten alloy steel ontology, improve the high tungsten of low-carbon The wear-resisting property of steel alloy ontology and comprehensive service performance；And the tungsten carbide particle in the present invention and low-carbon high-tungsten alloy steel ontology Between be metallurgical bonding, be firmly combined, tungsten carbide particle is not easily to fall off；Meanwhile control carburizing preset time and default temperature can be passed through The adjusting of degree, laser boring parameter controls grain volume fraction, distribution and the form of tungsten carbide enhancement layer, solves existing multiple The compound ability of condensation material is poor, tungsten carbide particle is easy to fall off the problems such as uncontrollable with tungsten carbide particles sized and distribution mode, Improve low-carbon high-tungsten alloy steel overall mechanical properties and heat-resisting, wear-resisting property, and preparation method is simple, easy to implement.
Detailed description of the invention
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is a kind of structural schematic diagram of low-carbon high-tungsten alloy steel of the invention；
Fig. 2 is a kind of preparation technology flow chart of low-carbon high-tungsten alloy steel of the invention.
Specific embodiment
Below with reference to attached drawing, the present invention is described in detail, as depicted in figs. 1 and 2：A kind of low-carbon of the present embodiment High-tungsten alloy ladle includes：Low-carbon high-tungsten alloy steel ontology 1,1 surface of low-carbon high-tungsten alloy steel ontology are managed equipped with multiple recess Shape body 4, and the inner surface of 1 surface of low-carbon high-tungsten alloy steel ontology and the recess tubular body 4 is equipped with tungsten carbide enhancing Layer 2.
In the present embodiment, the spacing between the two neighboring recess tubular body 4 is 25 μm~1000 μm, the recess pipe The caliber of shape body 4 is 10 μm~40 μm, and the depth of the recess tubular body 4 is less than or equal to 20 μm.
In the present embodiment, the tungsten carbide enhancement layer 2 with a thickness of 5 μm~15 μm, the tungsten carbide enhancement layer 2 is by uniform The tungsten carbide particle 3 being distributed on 1 surface of low-carbon high-tungsten alloy steel ontology and recess 4 inner surface of tubular body forms, The partial size of the tungsten carbide particle 3 is 0.5 μm~3.0 μm, and the volume fraction of the tungsten carbide particle 3 is 70%~95%.
In the present embodiment, the elementary organization of low-carbon high-tungsten alloy steel ontology 1 is pearlite, sorbite, bainite, geneva Any one or a few in body, austenite and ferrite.
The present invention provides a kind of low-carbon high-tungsten alloy steel, including low-carbon high-tungsten alloy steel ontology 1, low-carbon high-tungsten alloy steel 1 surface of ontology is equipped with multiple recess tubular bodies 4, and the inner surface of 1 surface of low-carbon high-tungsten alloy steel ontology and recess tubular body 4 is equal Equipped with tungsten carbide enhancement layer 2, in this way, the surface of low-carbon high-tungsten alloy steel ontology 1 can be effectively increased by tungsten carbide enhancement layer 2 Composite thickness improves the wear-resisting property and heat resistance of low-carbon high-tungsten alloy steel ontology 1.
A kind of preparation method of low-carbon high-tungsten alloy steel of the invention, includes the following steps：
Step 1：The surface of low-carbon high-tungsten alloy steel ontology is handled.
Specifically, the surface of the low-carbon high-tungsten alloy steel ontology is cleaned using acetone.
Step 2：The low-carbon high-tungsten alloy steel ontology after surface treatment is punched using laser-beam drilling machine, and to punching Low-carbon high-tungsten alloy steel ontology afterwards successively carries out pickling, is washed to neutral, ultrasonic cleaning, obtains with recess tubular body Low-carbon high-tungsten alloy steel ontology.
Wherein, the liquid that pickling uses includes volumetric concentration for the hydrochloric acid of 300ml/L, alternatively, volumetric concentration is 60ml/L Phosphoric acid, alternatively, volumetric concentration be 120ml/L hydrogen peroxide, alternatively, volumetric concentration be 300ml/L hydrofluoric acid, alternatively, body The sulfuric acid that product concentration is 200ml/L；Ultrasonic cleaning is carried out using ethyl alcohol or acetone.
Specifically, under vacuum condition or inert gas shielding, it is high to the low-carbon after surface treatment using laser-beam drilling machine Tungsten alloy steel ontology is punched, and is successively carried out pickling to the low-carbon high-tungsten alloy steel ontology after punching, is washed to neutrality, super Sound wave cleaning, obtains the low-carbon high-tungsten alloy steel ontology with recess tubular body.
Step 3：The low-carbon high-tungsten alloy steel ontology for having recess tubular body is placed in vacuum cementation furnace in default temperature Degree is lower to carry out carburizing, and is kept the temperature according to preset time, and the low-carbon high-tungsten alloy steel ontology with carbide layers is obtained.
Wherein, the mass fraction of carbon is 0.9%~1.0% in the vacuum cementation furnace, true in the vacuum cementation furnace Reciprocal of duty cycle is less than or equal to 1 × 104Pa, the preset temperature are 920 DEG C~940 DEG C, and the preset time is 10min~35min, institute The mass fraction for stating carburizing in the unit area of the low-carbon high-tungsten alloy steel ontology with recess tubular body is less than or equal to 0.5%.
It should be noted that preset temperature of the invention is the reasons why being selected as 920 DEG C~940 DEG C：If being 940 in temperature DEG C or more carburizing, on the one hand, diffusion coefficient of the carbon in low-carbon high-tungsten alloy steel ontology will rise rapidly, and diffusion velocity is too fast, Diffusion depth increases, and is unfavorable for the raising of tungsten carbide volume fraction in tungsten carbide enhancing in this way；On the other hand, the carbon generated can be made Change tungsten particle rapidly to grow up, leads to mechanical properties decrease；If being 920 DEG C or less carburizings in temperature, Carbon diffusion power can be reduced, Cause low-carbon high-tungsten alloy steel body surface concentration of carbon lower.
It should be noted that the mass fraction of carbon of the invention is the reasons why being selected as 0.9%~1.0%：If the matter of carbon It measures score and is greater than 1.0%, then diffusion velocity of the carbon in low-carbon high-tungsten alloy steel ontology is accelerated, and diffusion depth increases, so not Conducive to the raising of tungsten carbide volume fraction in tungsten carbide enhancing；If the mass fraction of carbon less than 0.9%, will lead to low-carbon, high tungsten is closed Golden steel body surface concentration of carbon is lower.
It should be noted that preset time of the invention is the reasons why being selected as 10min~35min：If soaking time is big In 35min, then tungsten carbide can be concentrated spreads into low-carbon high-tungsten alloy steel ontology, is unfavorable for keeping in tungsten carbide enhancement layer in this way The high-volume fractional of tungsten carbide；If soaking time is less than 10min, the carbon in carburized layer cannot react completely, to influence carbon Change the reinforcing effect of tungsten enhancement layer.
Step 4：Low-carbon high-tungsten alloy steel ontology with carbide layers is successively subjected to heating quenching and tempering, is obtained To the low-carbon high-tungsten alloy steel with tungsten carbide enhancement layer.
Wherein, the temperature of heating quenching is 780 DEG C~820 DEG C, and the temperature of tempering is 300 DEG C~420 DEG C.
The present invention provides a kind of preparation methods of low-carbon high-tungsten alloy steel, firstly, protecting in vacuum condition or inert gas Under shield, several recess tubular bodies are formed on the surface of low-carbon high-tungsten alloy steel ontology using laser-beam drilling machine, and can be to recess Spacing, the depth of tubular body that is recessed and caliber between tubular body are adjusted；Then, by low-carbon high-tungsten alloy steel ontology pre- If carrying out carburizing and heat preservation under temperature and preset time, so that tungsten atom and carbon atom react generation carbonization under solid state temperature Tungsten, and can realize and be carbonized on low-carbon high-tungsten alloy steel ontology according to the diffusion for the recess tubular body limitation tungsten carbide accomplished fluently Tungsten increases the preparation of layer, can effectively increase the surface recombination thickness of low-carbon high-tungsten alloy steel ontology, improve the high tungsten of low-carbon The wear-resisting property of steel alloy ontology and comprehensive service performance；And the tungsten carbide particle in the present invention and low-carbon high-tungsten alloy steel ontology Between be metallurgical bonding, be firmly combined, tungsten carbide particle is not easily to fall off；Meanwhile control carburizing preset time and default temperature can be passed through The adjusting of degree, laser boring parameter controls grain volume fraction, distribution and the form of tungsten carbide enhancement layer, solves existing multiple The compound ability of condensation material is poor, tungsten carbide particle is easy to fall off the problems such as uncontrollable with tungsten carbide particles sized and distribution mode, Improve low-carbon high-tungsten alloy steel overall mechanical properties and heat-resisting, wear-resisting property, and preparation method is simple, easy to implement.
Embodiment one
It is the preparation process of the 2W18Cr4V based composites with tungsten carbide enhancement layer：
Step 1：2W18Cr4V steel alloy is smelted, and controlling carbon content in 2W18Cr4V steel alloy is 0.2%, it will The surface of 2W18Cr4V steel alloy is cleaned up using acetone.
Step 2：Under vacuum conditions, the 2W18Cr4V steel alloy after surface treatment is beaten using laser-beam drilling machine Hole obtains recess tubular body, wherein the caliber of recess tubular body is 30 μm, the depth for the tubular body that is recessed is 20 μm, two neighboring Spacing between recess tubular body is 1000 μm, carries out pickling to the 2W18Cr4V steel alloy after punching later, what pickling used Liquid is the hydrochloric acid that volumetric concentration is 300ml/L, then is rinsed with water to neutrality, finally carries out ultrasonic cleaning using ethyl alcohol, obtains To the 2W18Cr4V steel alloy ontology with recess tubular body.
Step 3：To there is the 2W18Cr4V steel alloy ontology of recess tubular body to be placed in vacuum cementation furnace at 920 DEG C At a temperature of carry out carburizing, the mass fraction of carbon is 0.9% in vacuum cementation furnace, and the vacuum degree in vacuum cementation furnace is less than or equal to 1 ×104Pa, and guarantee that the mass fraction of carburizing in the unit area with the 2W18Cr4V steel alloy ontology of recess tubular body is small In being equal to 0.5%, 10min is finally kept the temperature, the 2W18Cr4V steel alloy ontology with carbide layers is obtained.
Step 4：By the 2W18Cr4V steel alloy ontology with carbide layers 780 DEG C at a temperature of carry out heating quenching, And 350 DEG C at a temperature of carry out tempering, finally obtain the 2W18Cr4V steel alloy composite wood with tungsten carbide enhancement layer Material.
The 2W18Cr4V alloy steel composite material that this implementation one obtains, tungsten carbide enhancement layer with a thickness of 5 μm or so, base This tissue includes the tungsten carbide particle and martensitic matrix that partial size is 0.5~1.2 μm, and the volume fraction of tungsten carbide particle is 70%, the micro-hardness for the tubular body that is recessed is 1850HV, the impact flexibility a of 2W18Cr4V alloy steel composite materialKReach 15J/ cm2。
Embodiment two
It is the preparation process of the 5W14Cr4VMn based composites with tungsten carbide enhancement layer：
Step 1：5W14Cr4VMn steel alloy is smelted, and controlling carbon content in 5W14Cr4VMn steel alloy is 0.5%, it will The surface of 5W14Cr4VMn steel alloy is cleaned up using acetone.
Step 2：Under inert gas argon gas shielded, using laser-beam drilling machine to the 5W14Cr4VMn alloy after surface treatment Steel is punched, and recess tubular body is obtained, wherein the caliber of recess tubular body is 20 μm, the depth for the tubular body that is recessed is 18 μm, Spacing between two neighboring recess tubular body is 25 μm, carries out pickling, acid to the 5W14Cr4VMn steel alloy after punching later Washing the liquid used is the hydrofluoric acid that volumetric concentration is 300ml/L, then is rinsed with water to neutrality, finally carries out ultrasound using acetone Wave cleaning, obtains the 5W14Cr4VMn steel alloy ontology with recess tubular body.
Step 3：To there is the 5W14Cr4VMn steel alloy ontology of recess tubular body to be placed in vacuum cementation furnace at 930 DEG C At a temperature of carry out carburizing, the mass fraction of carbon is 1.0% in vacuum cementation furnace, and the vacuum degree in vacuum cementation furnace is less than or equal to 1×104Pa, and guarantee the mass fraction of carburizing in the unit area with the 5W14Cr4VMn steel alloy ontology of recess tubular body Less than or equal to 0.5%, 20min is finally kept the temperature, obtains the 5W14Cr4VMn steel alloy ontology with carbide layers.
Step 4：By the 5W14Cr4VMn steel alloy ontology with carbide layers 800 DEG C at a temperature of carry out heating quench Fire, and 300 DEG C at a temperature of carry out tempering, it is multiple to finally obtain the 5W14Cr4VMn steel alloy with tungsten carbide enhancement layer Condensation material.
The 5W14Cr4VMn alloy steel composite material that this implementation two obtains, tungsten carbide enhancement layer with a thickness of 8 μm or so, Elementary organization includes the tungsten carbide particle and martensitic matrix that partial size is 1.0~2.1 μm, and the volume fraction of tungsten carbide particle is 80%, the micro-hardness for the tubular body that is recessed is 1950HV, the impact flexibility a of 5W14Cr4VMn alloy steel composite materialKReach 14J/cm2。
Embodiment three
It is the preparation process of the 2W9Mo3Cr4V based composites with tungsten carbide enhancement layer：
Step 1：2W9Mo3Cr4V steel alloy is smelted, and controlling carbon content in 2W9Mo3Cr4V steel alloy is 0.2%, it will The surface of 2W9Mo3Cr4V steel alloy is cleaned up using acetone.
Step 2：Under inert gas argon gas shielded, using laser-beam drilling machine to the 2W9Mo3Cr4V alloy after surface treatment Steel is punched, and recess tubular body is obtained, wherein the caliber of recess tubular body is 10 μm, the depth for the tubular body that is recessed is 17 μm, Spacing between two neighboring recess tubular body is 350 μm, carries out pickling, acid to the 2W9Mo3Cr4V steel alloy after punching later Washing the liquid used is the sulfuric acid that volumetric concentration is 200ml/L, then is rinsed with water to neutrality, finally carries out ultrasonic wave using ethyl alcohol Cleaning obtains the 2W9Mo3Cr4V steel alloy ontology with recess tubular body.
Step 3：To there is the 2W9Mo3Cr4V steel alloy ontology of recess tubular body to be placed in vacuum cementation furnace at 940 DEG C At a temperature of carry out carburizing, the mass fraction of carbon is 0.94% in vacuum cementation furnace, and the vacuum degree in vacuum cementation furnace is less than etc. In 1 × 104Pa, and guarantee the quality point of carburizing in the unit area with the 2W9Mo3Cr4V steel alloy ontology of recess tubular body Number is less than or equal to 0.5%, finally keeps the temperature 35min, obtains the 2W9Mo3Cr4V steel alloy ontology with carbide layers.
Step 4：By the 2W9Mo3Cr4V steel alloy ontology with carbide layers 820 DEG C at a temperature of carry out heating quench Fire, and 380 DEG C at a temperature of carry out tempering, it is multiple to finally obtain the 2W9Mo3Cr4V steel alloy with tungsten carbide enhancement layer Condensation material.
The 2W9Mo3Cr4V alloy steel composite material that this implementation three obtains, tungsten carbide enhancement layer with a thickness of 15 μm of left sides The right side, elementary organization include the tungsten carbide particle and martensitic matrix that partial size is 1.6~3.0 μm, the volume fraction of tungsten carbide particle It is 95%, the micro-hardness for the tubular body that is recessed is 2100HV, the impact flexibility a of 2W9Mo3Cr4V alloy steel composite materialKReach 10J/cm2。
Example IV
It is the preparation process of the 5W14Cr4VMn based composites with tungsten carbide enhancement layer：
Step 1：5W14Cr4VMn steel alloy is smelted, and controlling carbon content in 5W14Cr4VMn steel alloy is 0.3%, it will The surface of 5W14Cr4VMn steel alloy is cleaned up using acetone.
Step 2：Under inert gas argon gas shielded, using laser-beam drilling machine to the 5W14Cr4VMn alloy after surface treatment Steel is punched, and recess tubular body is obtained, wherein the caliber of recess tubular body is 40 μm, the depth for the tubular body that is recessed is 18 μm, Spacing between two neighboring recess tubular body is 700 μm, carries out pickling, acid to the 5W14Cr4VMn steel alloy after punching later Washing the liquid used is the hydrogen peroxide that volumetric concentration is 120ml/L, then is rinsed with water to neutrality, finally carries out ultrasound using ethyl alcohol Wave cleaning, obtains the 5W14Cr4VMn steel alloy ontology with recess tubular body.
Step 3：To there is the 5W14Cr4VMn steel alloy ontology of recess tubular body to be placed in vacuum cementation furnace at 935 DEG C At a temperature of carry out carburizing, the mass fraction of carbon is 0.98% in vacuum cementation furnace, and the vacuum degree in vacuum cementation furnace is less than etc. In 1 × 104Pa, and guarantee the quality point of carburizing in the unit area with the 5W14Cr4VMn steel alloy ontology of recess tubular body Number is less than or equal to 0.5%, finally keeps the temperature 30min, obtains the 5W14Cr4VMn steel alloy ontology with carbide layers.
Step 4：By the 5W14Cr4VMn steel alloy ontology with carbide layers 790 DEG C at a temperature of carry out heating quench Fire, and 420 DEG C at a temperature of carry out tempering, it is multiple to finally obtain the 5W14Cr4VMn steel alloy with tungsten carbide enhancement layer Condensation material.
The 5W14Cr4VMn alloy steel composite material that this implementation four obtains, tungsten carbide enhancement layer with a thickness of 10 μm of left sides The right side, elementary organization include the tungsten carbide particle and martensitic matrix that partial size is 1.2~2.6 μm, the volume fraction of tungsten carbide particle It is 88%, the micro-hardness for the tubular body that is recessed is 2060HV, the impact flexibility a of 5W14Cr4VMn alloy steel composite materialKReach 12J/cm2。
A kind of low-carbon high-tungsten alloy steel with tungsten carbide enhancement layer of the invention, tissue signature are that recess tubular body is equal Even vertical distribution is 10~40 μm in low-carbon high-tungsten alloy steel body surface, the caliber for the tubular body that is recessed, the depth for the tubular body that is recessed Degree is less than or equal to 20 μm, and the spacing between two neighboring recess tubular body is adjustable in 25~1000 μ ms；Tungsten carbide enhancing Layer with a thickness of 5~15 μm, tungsten carbide enhancement layer includes the micron order tungsten carbide that equally distributed partial size is 0.5~3.0 μm Grain, volume fraction are 70%~95%, and the micro-hardness for the tubular body that is recessed can reach 1850~2100HV, impact flexibility aKReach 10~15J/cm2.By preparing tungsten carbide enhancement layer in low-carbon high-tungsten alloy steel body surface, the high tungsten of low-carbon can further improve The wear-resisting property and high temperature resistance of steel alloy, the production of all kinds of Wear-resistant, high-temperature resistant components and product suitable for metallurgical industry.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this In the scope of the claims of invention.

Claims (8)

1. a kind of low-carbon high-tungsten alloy steel, it is characterised in that：Including：Low-carbon high-tungsten alloy steel ontology, the low-carbon high-tungsten alloy Steel body surface is equipped with multiple recess tubular bodies, and the low-carbon high-tungsten alloy steel body surface and the interior of tubular body that be recessed Surface is equipped with tungsten carbide enhancement layer；
Wherein, the spacing between the two neighboring recess tubular body is 25 μm~1000 μm, the caliber of the recess tubular body It is 10 μm~40 μm, the depth of the recess tubular body is less than or equal to 20 μm.
2. a kind of low-carbon high-tungsten alloy steel according to claim 1, it is characterised in that：The thickness of the tungsten carbide enhancement layer It is 5 μm~15 μm, the tungsten carbide enhancement layer is by being evenly distributed on the low-carbon high-tungsten alloy steel body surface and the recess Tungsten carbide particle composition on tubular body inner surface, the partial size of the tungsten carbide particle are 0.5 μm~3.0 μm, the tungsten carbide The volume fraction of particle is 70%~95%.
3. a kind of preparation method of low-carbon high-tungsten alloy steel, it is characterised in that：Include the following steps：
Step 1：The surface of low-carbon high-tungsten alloy steel ontology is handled；
Step 2：The low-carbon high-tungsten alloy steel ontology after surface treatment is punched using laser-beam drilling machine, and to punching after Low-carbon high-tungsten alloy steel ontology successively carries out pickling, is washed to neutral, ultrasonic cleaning, obtains the low-carbon with recess tubular body High-tungsten alloy steel ontology；
Step 3：To there is the low-carbon high-tungsten alloy steel ontology of recess tubular body to be placed in vacuum cementation furnace under preset temperature Carburizing is carried out, and is kept the temperature according to preset time, the low-carbon high-tungsten alloy steel ontology with carbide layers is obtained；
Step 4：Low-carbon high-tungsten alloy steel ontology with carbide layers is successively subjected to heating quenching and tempering, is had There is the low-carbon high-tungsten alloy steel of tungsten carbide enhancement layer.
4. a kind of preparation method of low-carbon high-tungsten alloy steel according to claim 3, it is characterised in that：The step 1 The surface of low-carbon high-tungsten alloy steel ontology is carried out processing to specifically include：
The surface of the low-carbon high-tungsten alloy steel ontology is cleaned using acetone.
5. a kind of preparation method of low-carbon high-tungsten alloy steel according to claim 3, it is characterised in that：In the step 2 Punching is carried out to the low-carbon high-tungsten alloy steel ontology after surface treatment using laser-beam drilling machine to specifically include：
Under vacuum condition or inert gas shielding, using laser-beam drilling machine to the low-carbon high-tungsten alloy steel ontology after surface treatment It is punched.
6. a kind of preparation method of low-carbon high-tungsten alloy steel according to claim 3, it is characterised in that：In the step 2 The liquid that pickling uses includes volumetric concentration for the hydrochloric acid of 300ml/L, alternatively, volumetric concentration is the phosphoric acid of 60ml/L, alternatively, body The hydrogen peroxide that product concentration is 120ml/L, alternatively, volumetric concentration is the hydrofluoric acid of 300ml/L, alternatively, volumetric concentration is 200ml/L Sulfuric acid；
The ultrasonic cleaning specifically includes：
Ultrasonic cleaning is carried out using ethyl alcohol or acetone.
7. a kind of preparation method of low-carbon high-tungsten alloy steel according to claim 3, it is characterised in that：The step 3 The mass fraction of carbon is 0.9%~1.0% in vacuum cementation furnace, the vacuum degree in the vacuum cementation furnace is less than or equal to 1 × 104Pa, the preset temperature are 920 DEG C~940 DEG C, and the preset time is 10min~35min, described to have recess tubulose The mass fraction of carburizing is less than or equal to 0.5% in the unit area of the low-carbon high-tungsten alloy steel ontology of body.
8. a kind of preparation method of low-carbon high-tungsten alloy steel according to claim 3, it is characterised in that：In the step 4 The temperature of heating quenching is 780 DEG C~820 DEG C, and the temperature of tempering is 300 DEG C~420 DEG C.
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CN105585327A (en) * 2014-10-24 2016-05-18 比亚迪股份有限公司 Metal/ceramic composite body and preparation method thereof
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CN101417380A (en) * 2007-10-25 2009-04-29 北京北科德瑞冶金工程技术有限公司 Manufacture method of composite roller for rolling narrow strip
CN102308115A (en) * 2009-02-09 2012-01-04 戴姆勒股份公司 Brake disc for a vehicle and method for the production thereof
CN101705454A (en) * 2009-11-09 2010-05-12 西安建筑科技大学 Technology for preparing tungsten carbide reinforced high speed steel-based composite material
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