CN106180241B - A kind of high-speed steel Cold Extrusion Punch and preparation method thereof with micron order tungsten carbide enhancement layer - Google Patents
A kind of high-speed steel Cold Extrusion Punch and preparation method thereof with micron order tungsten carbide enhancement layer Download PDFInfo
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- CN106180241B CN106180241B CN201610569371.0A CN201610569371A CN106180241B CN 106180241 B CN106180241 B CN 106180241B CN 201610569371 A CN201610569371 A CN 201610569371A CN 106180241 B CN106180241 B CN 106180241B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
- B21C25/025—Selection of materials therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
- B21C25/10—Making tools by operations not covered by a single other subclass
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- Mechanical Engineering (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Forging (AREA)
Abstract
The invention discloses a kind of high-speed steel Cold Extrusion Punch with micron order tungsten carbide enhancement layer, including high-speed steel Cold Extrusion Punch ontology, the inner surface of tubular body of the surface of the punch body with multiple recess, the surface of the punch body and the tubular body all has micron order tungsten carbide enhancement layer；The preparation method of above-mentioned high-speed steel Cold Extrusion Punch is：Punch body is surface-treated；Then laser boring, pickling, ultrasonic cleaning are carried out；The punch body with recess tubular body after obtained cleaning is subjected to carburizing in vacuum cementation furnace, obtains the complex with micron order tungsten carbide enhancement layer；It is finally post-processed to obtain the high-speed steel Cold Extrusion Punch with micron order tungsten carbide enhancement layer.The present invention solves the problems, such as that existing high-speed steel Cold Extrusion Punch solves easily permanent deformation, easy fracture, cracky, improves the overall mechanical properties of composite material and heat-resisting, wear-resisting property, and preparation method is simple, easy to implement.
Description
Technical field
The invention belongs to Stamping Die Technology fields, and in particular to a kind of high-speed steel with micron order tungsten carbide enhancement layer
Cold Extrusion Punch, the invention further relates to the preparation methods of the high-speed steel Cold Extrusion Punch.
Background technology
Diel is the essential technological equipment of punching production, is technology-intensive product.The quality of stamping parts, life
Efficiency and production cost etc. are produced, has direct relationship with the precision quality etc. of mold design and dieparts.Cold extrusion
Punch-pin at work, is subjected to the effect of axial impact force, and inevitably bears the effect of radial load, unit pressure
Up to 4 ~ 6 times of product blank material strength degree.Since metal flows in cavity when squeezing, make the work of punch-pin and cavity plate
All bear violent friction in face.This friction and metal are extruded the drastic deformation of material, and the instantaneous temperature of die surface is carried
Height reaches 200 ~ 300 DEG C, therefore it is required that Cold Extrusion Punch in long-term work there is not allowed that fracture and crooked fatigue fracture, and
It is required that having higher wearability and Resisting fractre ability.
Carbon tool steel, alloy tool steel and high-speed steel etc. may be used in the material of Cold Extrusion Punch.Carbon tool steel
Quenching degree is low, wearability is poor, quenching distortion is big, is suitable for manufacturing that some sizes are small, cold-extruded belling of simple shape, light load
Mould.Alloy tool steel, such as Cr12MoV, hardness is 60 ~ 62 HRC after heat treatment, has high wearability, quenching degree, high fever
Stability and high compression strength, still, tissue in the segregation of eutectic carbide and the presence of net carbide, need by
" changing forging " technique improves.High-speed steel is most common material, it has highest hardness, wearability and pressure resistance in mould steel
Degree, bearing capacity are very high.But it when the high-speed steel of single material being selected to do Cold Extrusion Punch, since its toughness is poor, needs to use
Low temperature quenching technique, to improve its toughness.
As can be seen that using single carbon tool steel, alloy tool steel or high-speed steel as material, Cold Extrusion Punch is hard
Degree, strength and toughness match the unification that strength and toughness has not yet been reached there is also contradiction.Therefore, the master of Cold Extrusion Punch
Wanting failure mode mainly has permanent deformation, fracture and breakage.On the basis of original single material Cold Extrusion Punch, also need to develop
Go out to take into account the novel Cold Extrusion Punch of excellent abrasive resistance and toughness.
Tungsten carbide have higher specific stiffness, specific modulus, low thermal coefficient of expansion and good thermal stability, wearability,
The advantages that dimensional stability and wetability good with steel material, prepares cold with tungsten carbide enhancement layer using it as reinforcement
Extruding punch can increase substantially Cold Extrusion Punch case hardness and intensity, while utilize reaction in-situ tungsten carbide enhancement layer
The high bond strength between high speed steel substrate realizes the raising of Cold Extrusion Punch toughness.
Invention content
The object of the present invention is to provide a kind of high-speed steel Cold Extrusion Punch with micron order tungsten carbide enhancement layer, to solve
The problem of existing high-speed steel Cold Extrusion Punch is easily permanently deformed, easy fracture, cracky.
It is a further object to provide the preparation methods of above-mentioned high-speed steel Cold Extrusion Punch.
The technical solution adopted in the present invention is a kind of high-speed steel cold-extruded belling with micron order tungsten carbide enhancement layer
Mould, including high-speed steel Cold Extrusion Punch ontology, the surface of the high-speed steel Cold Extrusion Punch ontology have the tubulose of multiple recess
Body, the surface of the high-speed steel Cold Extrusion Punch ontology and the inner surface of the tubular body all have the enhancing of micron order tungsten carbide
Layer.
Further, the spacing between the tubular body is 25 μm~1000 μm, the caliber of the tubular body is 10 μm~
40 μm, the depth of tubular body is not more than 20 μm.
Further, the thickness of the micron order tungsten carbide enhancement layer is 5 μm~15 μm, and tungsten carbide enhancement layer is by tungsten carbide
Particle forms, and tungsten carbide particle is evenly distributed in high-speed steel Cold Extrusion Punch ontology, and the grain size of tungsten carbide particle is 0.5 μm~
3.0 μm, the volume fraction of tungsten carbide particle is 70%~95%.
Further, the matrix of the high-speed steel Cold Extrusion Punch ontology is martensite, carbide and residual austenite
The combination of body.
A kind of preparation method of the high-speed steel Cold Extrusion Punch with micron order tungsten carbide enhancement layer, includes the following steps：
Step 1：High-speed steel Cold Extrusion Punch ontology is surface-treated, surface-treated high-speed steel cold extrusion is obtained
Punch body；
Step 2：The surface-treated high-speed steel Cold Extrusion Punch ontology that the step 1 is obtained using laser-beam drilling machine
Laser boring is carried out, pickling is then carried out, is rinsed with water later to neutrality, ultrasonic cleaning is finally carried out, after being cleaned
High-speed steel Cold Extrusion Punch ontology with recess tubular body；
Step 3：The high-speed steel Cold Extrusion Punch ontology with recess tubular body after cleaning that the step 2 obtains is set
It carries out carburizing, and held for some time at a certain temperature in vacuum cementation furnace, obtains with micron order tungsten carbide enhancement layer
Complex；
Step 4：The complex with micron order tungsten carbide enhancement layer that the step 3 obtains is annealed, is classified and quenches
Fire is handled with lonneal three times, obtains the high-speed steel Cold Extrusion Punch with micron order tungsten carbide enhancement layer.
Further, the surface treatment of the step 1 is specially that high-speed steel Cold Extrusion Punch body surface acetone is clear
Wash clean.
Further, laser boring carries out under vacuum condition or inert gas shielding in the step 2.
Further, the acid solution that pickling uses in the step 2 be volumetric concentration be 300ml/L hydrochloric acid, 60ml/L
Phosphoric acid, the hydrogen peroxide of 120ml/L, the hydrofluoric acid of 300ml/L or 200ml/L sulfuric acid in any one, the ultrasonic wave is clear
It washes and uses ethyl alcohol or acetone.
Further, carbonaceous amount a concentration of 0.9%~1.0%, vacuum degree are not more than 1 in vacuum cementation furnace in the step 3
×104 Pa, carburizing temperature are 920 DEG C~940 DEG C, carburizing quality point in the unit area of high-speed steel Cold Extrusion Punch body surface
Number is no more than 0.5%, and soaking time is 10 min~35min.
Further, it anneals at 880 DEG C in the step 4, keeps the temperature 3 h, then preheated at 840 DEG C, then at 1280 DEG C
Lower heating grade quench, hierarchical temperature is 620 DEG C, then three times, tempering insulation time is 1h to lonneal at 560 DEG C.
The beneficial effects of the invention are as follows：Invent a kind of high-speed steel cold-extruded belling with micron order tubular tungsten carbide enhancement layer
Mould, tungsten atom, which is reacted with carbon atom under solid state temperature, generates tungsten carbide, and utilizes the limitation carbonization of the position in the hole accomplished fluently in advance
The diffusion of tungsten is metallurgical binding between tungsten carbide particle and high-speed steel Cold Extrusion Punch ontology, is firmly combined with that particle is not easily to fall off,
Grain volume fraction, distribution and the shape of control carburizing process parameters and laser boring state modulator tungsten carbide reinforced phase can be passed through
State improves the surface strength and hardness of existing high-speed steel Cold Extrusion Punch, improves the heat-resisting and wear-resisting property of composite material,
Bond strength high between reaction in-situ tungsten carbide enhancement layer and high speed steel substrate is utilized simultaneously, realizes Cold Extrusion Punch toughness
Improve, solves the problems, such as high-speed steel Cold Extrusion Punch be easily permanently deformed, easy fracture, cracky, and preparation method is simple, is easy to reality
It applies.
Description of the drawings
Fig. 1 is the structural schematic diagram for the high-speed steel Cold Extrusion Punch that the present invention has micron order tungsten carbide enhancement layer；
Fig. 2 is the present invention, and there is the areas the high-speed steel Cold Extrusion Punch A partial enlargement structure of micron order tungsten carbide enhancement layer to show
It is intended to；
Fig. 3 is the present invention, and there is the areas the high-speed steel Cold Extrusion Punch B partial enlargement structure of micron order tungsten carbide enhancement layer to show
It is intended to, i.e. micron order tubular tungsten carbide structural schematic diagram.
In figure, 1. high-speed steel Cold Extrusion Punch ontologies, 2. tungsten carbide enhancement layers, 3. tungsten carbide particles, 4. tubular bodies.
Specific implementation mode
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
A kind of high-speed steel Cold Extrusion Punch with micron order tungsten carbide enhancement layer of the present invention, as shown in Fig. 1 ~ 3, including height
Fast steel Cold Extrusion Punch ontology 1, the surface of high-speed steel Cold Extrusion Punch ontology 1 have the tubular body 4 of multiple recess, tubular body 4
Between spacing be 25 μm~1000 μm, the caliber of tubular body 4 is 10 μm~40 μm, and the depth of tubular body 4 is not more than 20 μm,
It is 5 μm~15 μm micron order tungsten carbides that the surface of high-speed steel Cold Extrusion Punch ontology 1 and the inner surface of tubular body 4, which all have thickness,
Enhancement layer 2, the tungsten carbide particle 3 containing high-volume fractional in tungsten carbide enhancement layer 2.The grain size of tungsten carbide particle 3 be 0.5 μm~
3.0 μm, the volume fraction of tungsten carbide particle 3 is 70%~95%, and the matrix of high-speed steel Cold Extrusion Punch ontology 1 is geneva
Body, a small amount of carbide and minimal amount of retained austenite.
Particularly, a kind of high-speed steel Cold Extrusion Punch basic material with micron order tungsten carbide enhancement layer of the invention
It is xW18Cr4V, xW14Cr4VMn, xW9Mo3Cr4V.
The preparation method of above-mentioned high-speed steel Cold Extrusion Punch, specifically includes following steps：
Step 1：High-speed steel Cold Extrusion Punch body surface is cleaned up with acetone, obtains surface-treated high-speed steel
Cold Extrusion Punch ontology；
Step 2：Under vacuum condition or inert gas shielding step 1 is obtained using laser-beam drilling machine surface-treated
High-speed steel Cold Extrusion Punch ontology carry out laser boring, then carry out pickling, the acid solution that pickling uses is that volumetric concentration is
The hydrochloric acid of 300ml/L, the phosphoric acid of 60ml/L, the hydrogen peroxide of 120ml/L, the hydrofluoric acid of 300ml/L or 200ml/L sulfuric acid in
Any one, is rinsed with water later to neutrality, and ethyl alcohol or acetone is finally used to carry out ultrasonic cleaning, having after being cleaned
The high-speed steel Cold Extrusion Punch ontology of recess tubular body；
Step 3：The high-speed steel Cold Extrusion Punch ontology with recess tubular body after cleaning that step 2 obtains is placed in very
Carry out carburizing in empty carburizer at a certain temperature, carbonaceous amount a concentration of 0.9%~1.0% in vacuum cementation furnace, vacuum degree is little
In 1 × 104 Pa, carburizing temperature are 920 DEG C~940 DEG C, carburizing matter in the unit area of high-speed steel Cold Extrusion Punch body surface
It measures score and is no more than 0.5%, keep the temperature 10 min~35min, obtain the complex with micron order tungsten carbide enhancement layer；
Step 4：The complex with micron order tungsten carbide enhancement layer that step 3 obtains is annealed at 880 DEG C, heat preservation 3
Then h is preheated at 840 DEG C, then is heated grade quench at 1280 DEG C, hierarchical temperature is 620 DEG C, then low temperature returns at 560 DEG C
Three times, tempering insulation time is 1h to fire.Later to get to the high-speed steel cold-extruded belling with micron order tungsten carbide enhancement layer
Mould.
Laser boring, carburizing and heat treatment process are combined by the present invention, are obtained on high-speed steel Cold Extrusion Punch surface micro-
Meter level tungsten carbide enhancement layer, and there is the tubular body of recess in the enhancement layer；The tubular body of recess is the carbon by high-volume fractional
Change tungsten particle and a small amount of high speed steel substrate composition.
It is because of in 940 DEG C or more carburizings, on the one hand, the expansion of carbon in the base that carburizing temperature, which selects 920 DEG C~940 DEG C,
Scattered coefficient will rise rapidly, and diffusion velocity is too fast, and diffusion depth increases, and is unfavorable for tungsten carbide volume fraction in tungsten carbide enhancement layer
Raising；On the other hand, carburizing temperature is higher than 940 DEG C, and the tungsten carbide particle of generation can be made rapidly to grow up, caused under mechanical property
Drop.Carburizing temperature is less than 920 DEG C, can reduce diffusion kinetics, matrix surface concentration of carbon is relatively low.
In vacuum cementation furnace carbon mass concentration selection 0.9%~1.0% be because：Carbon mass concentration is higher than 1.0%, and carbon is in base
Diffusion velocity in body is accelerated, and diffusion depth increases, and is unfavorable for the raising of tungsten carbide volume fraction in tungsten carbide enhancement layer；Carbonaceous
It measures concentration and is less than 0.9%, matrix surface concentration of carbon is too low.
In vacuum cementation furnace soaking time selection 10min~35min be because：Soaking time is higher than 35min, tungsten carbide meeting
It concentrates and is spread into matrix, be unfavorable for keeping the high-volume fractional of tungsten carbide in tungsten carbide enhancement layer；Soaking time is less than
10min, the carbon in carburized layer cannot react completely, influence the enhancing effect of enhancement layer.
The beneficial effects of the invention are as follows：
1）Realize that micron order is blind in high-speed steel Cold Extrusion Punch body surface using laser drilling in vacuum environment
The preparation in hole, and its spacing, depth, diameter etc. can be adjusted；
2）High-speed steel Cold Extrusion Punch ontology in heating, insulating process, makes tungsten atom with carbon atom solid with outer carbon source
Reaction generates tungsten carbide at a temperature of state, and using the diffusion of the position in the hole accomplished fluently in advance limitation tungsten carbide, realizes micron order pipe
The preparation of shape tungsten carbide reinforced high speed steel Cold Extrusion Punch；
3）Tubular tungsten carbide reinforcement can be effectively increased the surface recombination thickness of high-speed steel Cold Extrusion Punch；
4）Tubular tungsten carbide internal diameter is 10~40 μm, and micro-hardness can reach 1850~2100 HV, high-speed steel cold-extruded belling
Mould hardness reaches 62 ~ 65 HRC, impact flexibilitya KIt can reach 10~15 J/cm2, high-speed steel Cold Extrusion Punch is greatly improved
Wear-resisting property and comprehensive performance.
5）It is metallurgical binding between tungsten carbide particle and matrix in tubular tungsten carbide, is firmly combined with, particle is not easily to fall off.Together
When, can by control the grain volume fraction of carburizing process parameters and laser boring state modulator tungsten carbide reinforced phase, distribution and
Form.Type, alloying level, fractions distribution of matrix etc. can also be adjusted according to working condition requirement, reach reinforced phase and matrix phase
Between performance best match.
6）Preparation method is simple, easy, easy to operate, convenient to carry out.
Embodiment 1
Step 1：High-speed steel Cold Extrusion Punch body surface is cleaned up with acetone, obtains surface-treated high-speed steel
Cold Extrusion Punch ontology；
Step 2：The surface-treated high-speed steel cold extrusion that step 1 is obtained under vacuum using laser-beam drilling machine
Punch body carries out laser boring, and aperture is 30 μm, and hole depth is 20 μm, and pitch of holes is 1000 μm；Then pickling is carried out, pickling makes
Acid solution is the hydrochloric acid that volumetric concentration is 300ml/L, is rinsed with water later to neutrality, finally uses ethyl alcohol to carry out ultrasonic wave clear
It washes, the high-speed steel Cold Extrusion Punch ontology with recess tubular body after being cleaned；
Step 3：The high-speed steel Cold Extrusion Punch ontology with recess tubular body after cleaning that step 2 obtains is placed in very
Carry out carburizing in empty carburizer at a temperature of 920 DEG C, carbonaceous amount a concentration of 0.9% in vacuum cementation furnace, vacuum degree is not more than 1
×104 Pa, carburizing mass fraction is no more than 0.5% in the unit area of high-speed steel Cold Extrusion Punch body surface, heat preservation 10
Min obtains having this composite of the high-speed steel Cold Extrusion Punch of micron order tungsten carbide enhancement layer；
Step 4：There is this composite of the high-speed steel Cold Extrusion Punch of micron order tungsten carbide enhancement layer by what step 3 obtained
It anneals at 880 DEG C, keeps the temperature 3 h, then preheated at 840 DEG C, then heat grade quench at 1280 DEG C, hierarchical temperature 620
DEG C, then three times, tempering insulation time is 1h to lonneal at 560 DEG C, obtains the height with micron order tungsten carbide enhancement layer
Fast steel Cold Extrusion Punch.
In gained high-speed steel Cold Extrusion Punch, the thickness of micron order tubular silicon carbide tungsten layer is 5 μm or so, and tissue includes grain
The volume fraction of the granular carbonization tungsten and martensitic matrix that diameter is 0.5 ~ 1.2 μm, tungsten carbide particle is 70%.Tubular tungsten carbide
Micro-hardness is 1850HV, and the hardness of high-speed steel Cold Extrusion Punch is 62HRC, impact flexibility aKIt can reach 15 J/cm2。
Embodiment 2
Step 1：Hot high-speed steel Cold Extrusion Punch body surface is cleaned up with acetone, obtains surface-treated high speed
Steel Cold Extrusion Punch ontology；
Step 2：The surface-treated high speed that step 1 is obtained under inert gas argon gas shielded using laser-beam drilling machine
Steel Cold Extrusion Punch ontology carries out laser boring, and aperture is 20 μm, and hole depth is 18 μm, and pitch of holes is 25 μm；Then pickling is carried out,
The acid solution that pickling uses is the hydrofluoric acid that volumetric concentration is 300ml/L, is rinsed with water later to neutrality, is finally carried out using acetone
Ultrasonic cleaning, the high-speed steel Cold Extrusion Punch ontology with recess tubular body after being cleaned；
Step 3：The high-speed steel Cold Extrusion Punch ontology with recess tubular body after cleaning that step 2 obtains is placed in very
Carry out carburizing in empty carburizer at a temperature of 930 DEG C, carbonaceous amount a concentration of 1.0% in vacuum cementation furnace, vacuum degree is not more than 1
×104 Pa, carburizing mass fraction is no more than 0.5% in the unit area of high-speed steel Cold Extrusion Punch body surface, heat preservation 20
Min obtains having this composite of the high-speed steel Cold Extrusion Punch of micron order tungsten carbide enhancement layer；
Step 4：There is this composite of the high-speed steel Cold Extrusion Punch of micron order tungsten carbide enhancement layer by what step 3 obtained
It anneals at 880 DEG C, keeps the temperature 3 h, then preheated at 840 DEG C, then heat grade quench at 1280 DEG C, hierarchical temperature 620
DEG C, then three times, tempering insulation time is 1h to lonneal at 560 DEG C, obtains the height with micron order tungsten carbide enhancement layer
Fast steel Cold Extrusion Punch.
In gained high-speed steel Cold Extrusion Punch, the thickness of micron order tubular silicon carbide tungsten layer is 9 μm or so, and tissue includes grain
The volume fraction of the granular carbonization tungsten and martensitic matrix that diameter is 1.0 ~ 2.1 μm, tungsten carbide particle is 82%.Tubular tungsten carbide
Micro-hardness is 1975HV, and the hardness of high-speed steel Cold Extrusion Punch is 63 HRC, the impact flexibility a of high-speed steel Cold Extrusion PunchK
It can reach 14 J/cm2。
Embodiment 3
Step 1：High-speed steel Cold Extrusion Punch body surface is cleaned up with acetone, obtains surface-treated high-speed steel
Cold Extrusion Punch ontology；
Step 2：The surface-treated high speed that step 1 is obtained under inert gas argon gas shielded using laser-beam drilling machine
Steel Cold Extrusion Punch ontology carries out laser boring, and aperture is 10 μm, and hole depth is 17 μm, and pitch of holes is 350 μm；Then acid is carried out
Wash, the acid solution that pickling uses is the sulfuric acid that volumetric concentration is 200ml/L, is rinsed with water later to neutrality, finally use ethyl alcohol into
Row ultrasonic cleaning, the high-speed steel Cold Extrusion Punch ontology with recess tubular body after being cleaned；
Step 3：The high-speed steel Cold Extrusion Punch ontology with recess tubular body after cleaning that step 2 obtains is placed in very
Carry out carburizing in empty carburizer at a temperature of 940 DEG C, carbonaceous amount a concentration of 0.94% in vacuum cementation furnace, vacuum degree is not more than 1
×104 Pa, carburizing mass fraction is no more than 0.5% in the unit area of high-speed steel Cold Extrusion Punch body surface, keeps the temperature 35min,
Obtain that there is this composite of the high-speed steel Cold Extrusion Punch of micron order tungsten carbide enhancement layer；
Step 4：There is this composite of the high-speed steel Cold Extrusion Punch of micron order tungsten carbide enhancement layer by what step 3 obtained
It anneals at 880 DEG C, keeps the temperature 3 h, then preheated at 840 DEG C, then heat grade quench at 1280 DEG C, hierarchical temperature 620
DEG C, then three times, tempering insulation time is 1h to lonneal at 560 DEG C, obtains the height with micron order tungsten carbide enhancement layer
Fast steel Cold Extrusion Punch.
The thickness of gained high-speed steel Cold Extrusion Punch, micron order tubular silicon carbide tungsten layer is 15 μm, and tissue includes that grain size is
The volume fraction of 1.8 ~ 3.0 μm of granular carbonization tungsten and pearlite matrix, tungsten carbide particle is 95%.Tubular tungsten carbide is microcosmic
Hardness is 2100HV, and the hardness of high-speed steel Cold Extrusion Punch is 65HRC, the impact flexibility a of high-speed steel Cold Extrusion PunchKIt can reach
10 J/cm2。
Embodiment 4
Step 1：High-speed steel Cold Extrusion Punch body surface is cleaned up with acetone, obtains surface-treated high-speed steel
Cold Extrusion Punch ontology；
Step 2：The surface-treated high speed that step 1 is obtained under inert gas argon gas shielded using laser-beam drilling machine
Steel Cold Extrusion Punch ontology carries out laser boring, and aperture is 40 μm, and hole depth is 18 μm, and pitch of holes is 700 μm；Then acid is carried out
It washes, the acid solution that pickling uses is the hydrogen peroxide that volumetric concentration is 120ml/L, is rinsed with water later to neutrality, and ethyl alcohol is finally used
Ultrasonic cleaning is carried out, the high-speed steel Cold Extrusion Punch ontology with recess tubular body after being cleaned；
Step 3：The high-speed steel Cold Extrusion Punch ontology with recess tubular body after cleaning that step 2 obtains is placed in very
Carry out carburizing in empty carburizer at a temperature of 935 DEG C, carbonaceous amount a concentration of 0.98% in vacuum cementation furnace, vacuum degree is not more than 1
×104 Pa, carburizing mass fraction is no more than 0.5% in the unit area of high-speed steel Cold Extrusion Punch body surface, heat preservation 30
Min obtains having this composite of the high-speed steel Cold Extrusion Punch of micron order tungsten carbide enhancement layer；
Step 4：There is this composite of the high-speed steel Cold Extrusion Punch of micron order tungsten carbide enhancement layer by what step 3 obtained
It anneals at 880 DEG C, keeps the temperature 3 h, then preheated at 840 DEG C, then heat grade quench at 1280 DEG C, hierarchical temperature 620
DEG C, then three times, tempering insulation time is 1h to lonneal at 560 DEG C, obtains the height with micron order tungsten carbide enhancement layer
Fast steel Cold Extrusion Punch.
In gained high-speed steel Cold Extrusion Punch, the thickness of micron order tubular silicon carbide tungsten layer is 12 μm, and tissue includes grain size
Volume fraction for 1.4 ~ 2.6 μm of granular carbonization tungsten and martensitic matrix, tungsten carbide particle is 90%.Tubular tungsten carbide is micro-
Sight hardness is 2060HV, and the hardness of high-speed steel Cold Extrusion Punch is 64HRC, the impact flexibility a of high-speed steel Cold Extrusion PunchKIt is reachable
To 12 J/cm2。
A kind of high-speed steel Cold Extrusion Punch with micron order tungsten carbide enhancement layer of the present invention, tissue signature are micron order
Tubular tungsten carbide uniform vertical is distributed in high-speed steel Cold Extrusion Punch body surface, and internal diameter is 10~40 μm, and depth is not more than 20
μm, spacing is adjustable in 25~1000 μ ms.The thickness of tungsten carbide enhancement layer is 5~15 μm, the tissue packet of tubular tungsten carbide
The micron order tungsten carbide particle that equally distributed grain size is 0.5~3.0 μm is included, volume fraction is 70%~95%.Tubular tungsten carbide
Micro-hardness can reach 1850~2100 HV；The hardness of the high-speed steel Cold Extrusion Punch of high-speed steel Cold Extrusion Punch is up to 62 ~ 65
HRC, impact flexibility aKIt can reach 10~15 J/cm2.By preparing micron order tubulose in high-speed steel Cold Extrusion Punch body surface
Tungsten carbide reinforcement can further improve the wear-resisting property and high temperature resistance of high-speed steel Cold Extrusion Punch, while utilize original position
Bond strength high between tungsten carbide enhancement layer and high speed steel substrate is reacted, realizes the raising of Cold Extrusion Punch toughness, is solved high
The problem of fast steel Cold Extrusion Punch is easily permanently deformed, easy fracture, cracky, and it is of low cost, preparation process is simple.
Claims (9)
1. a kind of high-speed steel Cold Extrusion Punch with micron order tungsten carbide enhancement layer, including high-speed steel Cold Extrusion Punch ontology,
It is characterized in that：The surface of the high-speed steel Cold Extrusion Punch ontology has the tubular body of multiple recess, the high-speed steel cold-extruded
The inner surface of the surface of belling mould body and the tubular body all has micron order tungsten carbide enhancement layer；Between the tubular body
Spacing is 25 μm~1000 μm, and the caliber of the tubular body is 10 μm~40 μm, and the depth of tubular body is not more than 20 μm.
2. the high-speed steel Cold Extrusion Punch according to claim 1 with micron order tungsten carbide enhancement layer, which is characterized in that
The thickness of the micron order tungsten carbide enhancement layer is 5 μm~15 μm, and tungsten carbide enhancement layer is made of tungsten carbide particle, tungsten carbide
Grain is evenly distributed in high-speed steel Cold Extrusion Punch ontology, and the grain size of tungsten carbide particle is 0.5 μm~3.0 μm, tungsten carbide particle
Volume fraction be 70%~95%.
3. the high-speed steel Cold Extrusion Punch according to claim 1 with micron order tungsten carbide enhancement layer, which is characterized in that
The matrix of the high-speed steel Cold Extrusion Punch ontology is martensite, carbide and the combination of retained austenite.
4. a kind of preparation method of the high-speed steel Cold Extrusion Punch with micron order tungsten carbide enhancement layer, which is characterized in that including
Following steps：
Step 1：High-speed steel Cold Extrusion Punch ontology is surface-treated, surface-treated high-speed steel Cold Extrusion Punch is obtained
Ontology；
Step 2：The surface-treated high-speed steel Cold Extrusion Punch ontology that the step 1 obtains is carried out using laser-beam drilling machine
Laser boring, then carries out pickling, is rinsed with water later to neutrality, finally carries out ultrasonic cleaning, having after being cleaned
The high-speed steel Cold Extrusion Punch ontology of recess tubular body；
Step 3：The high-speed steel Cold Extrusion Punch ontology with recess tubular body after cleaning that the step 2 obtains is placed in very
Carburizing, and held for some time are carried out in empty carburizer at a certain temperature, obtains that there is answering for micron order tungsten carbide enhancement layer
It is fit；
Step 4：The complex with micron order tungsten carbide enhancement layer that the step 3 obtains is annealed, grade quench with
Lonneal is handled three times, obtains the high-speed steel Cold Extrusion Punch with micron order tungsten carbide enhancement layer.
5. a kind of preparation side of high-speed steel Cold Extrusion Punch with micron order tungsten carbide enhancement layer according to claim 4
Method, which is characterized in that the surface treatment of the step 1 is specially to clean high-speed steel Cold Extrusion Punch body surface with acetone to do
Only.
6. a kind of preparation side of high-speed steel Cold Extrusion Punch with micron order tungsten carbide enhancement layer according to claim 4
Method, which is characterized in that laser boring carries out under vacuum condition or inert gas shielding in the step 2.
7. a kind of preparation side of high-speed steel Cold Extrusion Punch with micron order tungsten carbide enhancement layer according to claim 4
Method, which is characterized in that the acid solution that pickling uses in the step 2 be volumetric concentration be 300ml/L hydrochloric acid, 60ml/L phosphorus
Any one in the sulfuric acid of acid, the hydrogen peroxide of 120ml/L, the hydrofluoric acid of 300ml/L or 200ml/L, the ultrasonic cleaning
Use ethyl alcohol or acetone.
8. a kind of preparation side of high-speed steel Cold Extrusion Punch with micron order tungsten carbide enhancement layer according to claim 4
Method, which is characterized in that carbonaceous amount a concentration of 0.9%~1.0% in vacuum cementation furnace in the step 3, vacuum degree no more than 1 ×
104Pa, carburizing temperature are 920 DEG C~940 DEG C, carburizing mass fraction in the unit area of high-speed steel Cold Extrusion Punch body surface
No more than 0.5%, soaking time is 10min~35min.
9. a kind of preparation side of high-speed steel Cold Extrusion Punch with micron order tungsten carbide enhancement layer according to claim 4
Method, which is characterized in that anneal at 880 DEG C in the step 4, keep the temperature 3h, then preheated at 840 DEG C, then add at 1280 DEG C
Hot grade quench, hierarchical temperature is 620 DEG C, then three times, tempering insulation time is 1h to lonneal at 560 DEG C.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101923309A (en) * | 2009-06-16 | 2010-12-22 | 富士施乐株式会社 | Method for manufacturing a tubular body |
| CN102350491A (en) * | 2011-10-26 | 2012-02-15 | 西安建筑科技大学 | Preparation method of tungsten carbide particle enhanced steel-base surface layer composite bar |
| 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 |
| CN105648177A (en) * | 2014-11-22 | 2016-06-08 | 重庆市贵坤机械有限公司 | Tool steel heat treatment process |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8507105B2 (en) * | 2005-10-13 | 2013-08-13 | Praxair S.T. Technology, Inc. | Thermal spray coated rolls for molten metal baths |
| JP5058645B2 (en) * | 2007-03-27 | 2012-10-24 | トーカロ株式会社 | Thermal spray powder, thermal spray coating and hearth roll |
-
2016
- 2016-07-20 CN CN201610569371.0A patent/CN106180241B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101923309A (en) * | 2009-06-16 | 2010-12-22 | 富士施乐株式会社 | Method for manufacturing a tubular body |
| CN102350491A (en) * | 2011-10-26 | 2012-02-15 | 西安建筑科技大学 | Preparation method of tungsten carbide particle enhanced steel-base surface layer composite bar |
| 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 |
| CN105648177A (en) * | 2014-11-22 | 2016-06-08 | 重庆市贵坤机械有限公司 | Tool steel heat treatment process |
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