CN107099767B - A kind of explosion drill bit heat treatment process - Google Patents
A kind of explosion drill bit heat treatment process Download PDFInfo
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- CN107099767B CN107099767B CN201710413280.2A CN201710413280A CN107099767B CN 107099767 B CN107099767 B CN 107099767B CN 201710413280 A CN201710413280 A CN 201710413280A CN 107099767 B CN107099767 B CN 107099767B
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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
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/22—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for drills; for milling cutters; for machine cutting tools
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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
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
-
- 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/002—Bainite
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/008—Martensite
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Heat Treatment Of Articles (AREA)
- Drilling And Boring (AREA)
- Earth Drilling (AREA)
Abstract
A kind of explosion drill bit heat treatment process, be after 910-930 DEG C of case-carbonizing, be furnace-cooled to 820-860 DEG C heat preservation after, come out of the stove oil quenching to 180-220 DEG C it is fuel-displaced air-cooled；Then, it is cooled to 350-450 DEG C with 100 DEG C -150 DEG C/min of cooling velocity after 810-860 DEG C, samming, then after being cooled to 180-220 DEG C with 1-5 DEG C/min of cooling velocity, the natural cooling in air.Present invention process advantages of simple, the material after heat treatment, surface are lower bainite+a small amount of cryptocrystalline martensite, center portion is upper bainite+a small amount of lath martensite tissue, and surface strength, hardness are high, wear-resisting, impact flexibility is high, good core toughness, and structural stress is small, the strength of materials after heat treatment slightly improves, toughness greatly improves, and meets the requirement of explosion drilling tool service condition, both wear-resisting, the heavy shock loads of iterative cycles can be born again, and the service life of drilling tool is largely increased.
Description
Technical field
The invention discloses a kind of explosion drill bit heat treatment process, belong to drilling tool technical field of heat treatment technology.
Background technique
For the hole depth (granite, 20 megapascal of wind pressure) of blast hole generally at 150-200 meters or so, hole depth is smaller, therefore, right
For the drill bit of blast hole drill, usually requires that with certain intensity and good endurance impact property, can repeatedly follow
Ring uses, and improves drilling smoothness.
Our company uses Xining XGQ25 material to prepare explosion drill bit all the time, material composition: C:0.22-0.27,
Si:1.4-1.8, Mn:1.35-1.75, Cr:0.25-0.55, Ni:1.5-1.9, Mo:0.3-0.5, V:0.1-0.2, heat treatment
Technique are as follows: quenching 820 DEG C of -840 DEG C of oil quenchings to 200 DEG C it is fuel-displaced air-cooled；This drill bit, performance is intensity, hardness is high, resistance to
Fatigue impact poor toughness, and because the material carburizing performance is bad, do not have to carburization process generally, therefore wear-resisting property is poor.Drill bit
Centre hardness is high, and toughness is poor after filling carbide button, easily broken easily to collapse block.In actual use, the accumulative drilling of a drill bit is deep
Degree is not able to satisfy the requirement being recycled for multiple times only up to 180 or so rice.Its performance indicator is shown in Table；
| Tensile strength N/mm2 | Yield strength N/mm2 | Hardness (HRC) | It impacts AKU (J) |
| 1500 or so | 1200 or so | 42-45 | 85-95 |
Number of patent application is 201310694700.0, entitled " big specification drilling tool structural alloy steel and its smelting process "
Patent document, provide a kind of structural alloy steel, it is a kind of air quenching steel that this steel, which has good harden ability and hardenability,
It is used to prepare big specification drilling tool.After the cold tempering of+200 DEG C of oil of 950 DEG C of air quenchings, tensile strength Rm is in 1665-1760Mpa
Between, yield strength Rel is between 1373-1393Mpa, ballistic work AKU2Between 96-114J.This structural alloy steel has
Higher intensity and certain impact resistance ability are highly suitable as the preparation of big specification drilling tool (φ 550mm) product, to meet
In the drilling depth of design disconnected bar accident does not occur for big specification drilling tool, it is ensured that drilling is gone on smoothly.Our company was since 2014
Explosion drill bit is prepared, is actually used by the heat treatment process of patent document introduction using this structural alloy steel, is found
220 or so the rice of accumulative drilling depth average out to of drill bit, compared with the raising that the bit life that our company produced originally has 20% or so,
But still it is not able to satisfy the requirement of client.Therefore, inventor improves the heat treatment process of drill bit, to mention to greatest extent
Rise the service life of drill bit.
Summary of the invention
It is an object of the invention to overcome the deficiency of the prior art, provide a kind of simple process rationally, slightly reducing material
Expect centre hardness, promotes the explosion drill bit heat treatment process of material impact-resistant performance by a relatively large margin；The present invention is by adjusting brill
Head base center portion and textura epidermoidea obtain surface strength, hardness height, and wear-resisting, impact flexibility is high, good core toughness, and structural stress
Small superperformance matching, fatigue performance are significantly promoted.
A kind of explosion drill bit heat treatment process of the present invention, includes the following steps:
Step 1: carburizing and quenching
By the drill bit after smart car after 910-930 DEG C of progress case-carbonizing, kept the temperature at least with being furnace-cooled to 820-860 DEG C
20 minutes, come out of the stove oil quenching to 180-220 DEG C it is fuel-displaced air-cooled；
Step 2: secondary quenching
By workpiece obtained by the first step at 810-860 DEG C, samming at least 60 minutes, come out of the stove cold with 100 DEG C -150 DEG C/min
But speed is cooled to 350-450 DEG C, then, natural in air after being cooled to 180-220 DEG C with the cooling velocity of 1-5 DEG C/s
It is cooled to room temperature.
A kind of explosion drill bit heat treatment process of the present invention, carburizing process parameters are as follows: 910-930 DEG C of carburizing temperature, strong to seep
6-8 hours, carburizing medium instilled speed 100-140/minute；Then, it spreads 2-5 hours, carburizing medium instills speed 15-45
Grain/minute；With being furnace-cooled to 820-860 DEG C, 20-40 minutes are kept the temperature, oil quenching of coming out of the stove.
A kind of explosion drill bit heat treatment process of the present invention, carburizing medium are made of carburizer and diluent, carburizer choosing
From the higher kerosene of active carbon atomic component and ethyl acetate, diluent is methanol.
A kind of explosion drill bit heat treatment process of the present invention, strong to seep the stage, carburizing medium is configured by following mass ratioes:
Methanol: kerosene: ethyl acetate=1:2:1.
Diffusion phase, carburizing medium are configured by following mass ratioes:
Methanol: kerosene: ethyl acetate=2:1:0.5.
A kind of explosion drill bit heat treatment process of the present invention, after carburizing and quenching, in secondary quenching process, workpiece is in 810-
860 DEG C, samming comes out of the stove oil quenching to after 350-450 DEG C after 60-120 minutes, is placed in salt bath or air furnace with 1-5 DEG C/min
Cooling velocity is cooled to 180-220 DEG C；The product name of quenching oil is fast quenching oil (K oil), and manufacturer is that Houghton is public
Department, product type are Houghto-Quench K.
A kind of explosion drill bit heat treatment process of the present invention, the material for preparing bit blank includes following components, by quality hundred
Divide than composition:
The present invention due to use above-mentioned process, using when high temperature can the higher kerosene of degrading activity charcoal atomic component and
Ethyl acetate carries out carburizing as carburizer, to bit blank surface, is seeped by 6-8 hours strong, spreads within 2-5 hours, it is molten to obtain carbon
The gentle carburized layer of gradient is spent, is furnace-cooled to 820-860 DEG C, keeps the temperature 20-60 minutes, oil quenching of coming out of the stove, acquisition surface is fine needle geneva
Body+a small amount of retained austenite, center portion are lath martensite, and grain size reaches refinement center portion in 6 grades or more of drill bit original structure
Crystal grain eliminates the purpose of carburized surface net carbide.
It then carries out quenching for second, quenching and preserving heat, temperature is controlled in AC1More than, it is ensured that the abundant austenitizing of center portion and
Crystal grain is not grown up, then, using 100 DEG C of -150 DEG C/min of cooling rate rapid cooling (using Houghton K oil as hardening media) to 350 DEG C -
450 DEG C fuel-displaced, the slow cooling in the salt bath in bainite transformation temperature area, and is cooled to 200 DEG C with 1-5 DEG C/min of speed and comes out of the stove
It is air-cooled；Obtaining surface is lower bainite+a small amount of cryptocrystalline martensite, and center portion is the tissue of upper bainite.The quenching technical passes through tune
Whole bit blank center portion and textura epidermoidea obtain surface strength, hardness height, and wear-resisting, impact flexibility is high, good core toughness, and organizes
The small superperformance matching of stress, reducing centre hardness can guarantee wearability, the impact fatigue-resistant performance of center toughness and surface
Perfect cooperation.It more can be reduced the compression of (interference fit) after drill bit toothing, reduce and use rear tearing tendency；Keep drill bit intensity full
The requirement of sufficient service condition, and fatigue performance is significantly promoted, and is able to satisfy when explosion is used with drilling tool and is required wear-resisting and bear
The effect of large impact power iterative cycles, service life are greatly improved, and tensile strength Rm is bent between 1550-1770Mpa
Intensity Rel is taken between 1250-1400Mpa, ballistic work AKU2Drill bit phase between 120-131J, with prior art processing
Than Rm improves 10% or so, and Rel improves 10%, AKU230% is improved, adds up to bore deep raising 30-40%.(350 meters or so)
In conclusion present invention process advantages of simple, the material after heat treatment, surface are lower bainite+a small amount of hidden needle horse
Family name's body, center portion are upper bainite+a small amount of lath martensite tissue, and surface strength, hardness are high, and wear-resisting, impact flexibility is high, center portion
Good toughness, and structural stress is small, the strength of materials after heat treatment slightly improves, and toughness greatly improves, meets explosion and taken with drilling tool
The requirement of labour condition, it is not only wear-resisting, but also the heavy shock loads of iterative cycles can be born, the service life of drilling tool is substantially mentioned
It is high.
Detailed description of the invention
Attached drawing 1 is carburizing quenching process route map of the present invention.
Attached drawing 2 is secondary quenching process route chart of the present invention.
Attached drawing 3 is that the drill bit surface layer eutectoid district's groups that the embodiment of the present invention 1 is handled knit metallographic microscope.
Attached drawing 4 is the drill bit core structure metallographic microscope that the embodiment of the present invention 1 is handled.
From figure 3, it can be seen that surface layer eutectoid area is lower bainite+a small amount of cryptocrystalline martensite tissue, grain size is 7 grades.
From attached drawing 4 it can be seen that core structure is upper bainite tissue+a small amount of lath martensite, grain size is 7 grades.
Specific embodiment
Quenching oil used in carburizing and quenching and secondary quenching is equal in the embodiment of the present invention are as follows:
Fast quenching oil (K oil), manufacturer are Houghton company, and product type is Houghto-Quench K.
In the embodiment of the present invention in carburizing quenching process, carburizing medium is configured by following mass ratioes:
It is strong to seep stage, methanol: kerosene: ethyl acetate=1:2:1；
Diffusion phase, methanol: kerosene: ethyl acetate=2:1:0.5.
Embodiment 1
A kind of explosion drill bit heat treatment process, includes the following steps:
The material component of bit blank is prepared, is formed by mass percentage as follows:
C 0.25, Si 1.45, Mn 1.3, Cr 0.5, Ni 1.8, Mo 0.6, V 0.2, S≤0.01, P≤0.015,
Cu≤0.2, surplus Fe；
By 10, drill bit after smart car, strong to seep 8 hours in 910 DEG C of progress case-carbonizings, carburizing medium instills speed
135/minute；Then, it spreads 5 hours, carburizing medium instills 45/minute of speed；With being furnace-cooled to 850 DEG C, 90 minutes are kept the temperature,
Come out of the stove oil quenching to 180 DEG C it is fuel-displaced air-cooled；
Step 2: secondary quenching
By workpiece obtained by the first step at 810 DEG C, samming 80 minutes, oil quenching of coming out of the stove is to 360 DEG C, then, be placed in salt bath with
After 1-2 DEG C/min of cooling velocity is cooled to 180 DEG C, the cooled to room temperature in air.
Embodiment 2
A kind of explosion drill bit heat treatment process, includes the following steps:
The material component of bit blank is prepared, is formed by mass percentage as follows:
C 0.25, Si 1.45, Mn 1.3, Cr 0.5, Ni 1.8, Mo 0.6, V 0.2, S≤0.01, P≤0.015,
Cu≤0.2, surplus Fe；
By 10, drill bit after smart car, strong to seep 7 hours in 920 DEG C of progress case-carbonizings, carburizing medium instills speed
140/minute；Then, it spreads 3 hours, carburizing medium instills 30/minute of speed；With being furnace-cooled to 840 DEG C, 60 minutes are kept the temperature,
Come out of the stove oil quenching to 200 DEG C it is fuel-displaced air-cooled；
Step 2: secondary quenching
By workpiece obtained by the first step at 840 DEG C, samming 60 minutes, oil quenching of coming out of the stove is to 400 DEG C, then, be placed in salt bath with
After 2-3 DEG C/min of cooling velocity is cooled to 200 DEG C, the cooled to room temperature in air.
Embodiment 3
A kind of explosion drill bit heat treatment process, includes the following steps:
The material component of bit blank is prepared, is formed by mass percentage as follows:
C 0.25, Si 1.45, Mn 1.3, Cr 0.5, Ni 1.8, Mo 0.6, V 0.2, S≤0.01, P≤0.015,
Cu≤0.2, surplus Fe；
By 10, drill bit after smart car, strong to seep 6 hours in 930 DEG C of progress case-carbonizings, carburizing medium instills speed
100/minute；Then, it spreads 2 hours, carburizing medium instills 18/minute of speed；With being furnace-cooled to 820 DEG C, 20 minutes are kept the temperature,
Come out of the stove oil quenching to 220 DEG C it is fuel-displaced air-cooled；
Step 2: secondary quenching
By workpiece obtained by the first step at 860 DEG C, samming 120 minutes, oil quenching of coming out of the stove is to 450 DEG C, then, be placed in salt bath with
After 4-5 DEG C/min of cooling velocity is cooled to 220 DEG C, the cooled to room temperature in air.
Comparative example 1
The material component of bit blank is prepared, is formed by mass percentage as follows:
C 0.25, Si 1.45, Mn 1.3, Cr 0.5, Ni 1.8, Mo 0.6, V 0.2, S≤0.01, P≤0.015,
Cu≤0.2, surplus Fe；
Step 1: annealing
By 10, drill bit Jing Guo smart car, after 690 DEG C of annealing temperature, heat preservation 6 hours, it is furnace-cooled to 550 DEG C and comes out of the stove and be air-cooled to
Room temperature, annealing heating rate are less than or equal to 100 DEG C/h；
Step 2: quenching+tempering
By the first step treated bit blank is warming up to 950 DEG C, keep the temperature 2 hours, come out of the stove air-cooled (air quenching) to room temperature, so
Afterwards, 200 DEG C are heated to, oil is cooled to room temperature after heat preservation 2 hours.
The performance indicator of embodiment 1,2,3 and comparative example 1 is shown in Table 1:
Table 1
It can be seen that 1,2,3 performance indicator of embodiment compared with the drill bit that the prior art is handled from the data of table 1, Rm is mentioned
High 10% or so, Rel improves 10%, AKU2Improve 30%.
The drill bit of embodiment 1,2,3 and comparative example 1 adds up drilling depth value and is shown in Table 2:
It tests place: pacifying iron ore in Anhui six.
Using same drilling machine, construction drill technique carries out data acquisition under the same conditions.
Table 2
It can be seen that from above data with process example 1,2,3, it is deep that bit bore depth is above 1 bit bore of comparative example
Degree, wherein 2 bit bore depth of embodiment is most deep.
1 drill bit of comparative example, meets that quenching stress is small, and quenching structure is more suitable with oil quenching, salt bath isothermal second level quenching technical
For explosion drill bit use condition, intensity, hardness, impact flexibility, wear-resisting, fatigue proof cooperation are best, thus effectively
Improve the service life of drill bit.New process of the present invention can not only resistance to high punching but also high frequency tolerant Gao Chong, effectively raise making for drill bit
Use the service life.Although overcome it is existing have intensity high, resistance to high energy impact events ability is preferable, and tough wear-resistant hard is slightly worse, intolerant to height
The defect of frequency high energy impact events；Embodiment 1,2,3 adds up to bore deep raising 30-40% compared with the drill bit that the prior art is handled.
Claims (7)
1. a kind of explosion drill bit heat treatment process, includes the following steps:
Step 1: carburizing and quenching
Strong to seep 6-8 hours by the drill bit after smart car in 910-930 DEG C, carburizing medium instills speed 100-140/minute；
Then, it spreads 2-5 hours, carburizing medium instills speed 15-45/minute；With being furnace-cooled to 820-860 DEG C, heat preservation 20-40 divides
Clock, come out of the stove oil quenching to 180-220 DEG C it is fuel-displaced air-cooled；
Carburizing medium is made of carburizer and diluent, and carburizer is selected from the higher kerosene of active carbon atomic component and acetic acid second
Ester, diluent are methanol；
Strong to seep the stage, carburizing medium is configured by following mass ratioes:
Methanol: kerosene: ethyl acetate=1:2:1；
Diffusion phase, carburizing medium are configured by following mass ratioes:
Methanol: kerosene: ethyl acetate=2:1:0.5；
Step 2: secondary quenching
By workpiece obtained by the first step at 810-860 DEG C, samming at least 60 minutes, come out of the stove with 100 DEG C -150 DEG C/min of cooling speed
Degree is cooled to 350-450 DEG C, then, naturally cold in air after being cooled to 180-220 DEG C with 1-5 DEG C/min of cooling velocity
But to room temperature.
2. a kind of explosion drill bit heat treatment process according to claim 1, it is characterised in that: in secondary quenching process,
Workpiece samming 60-120 minutes, comes out of the stove at 810-860 DEG C and is cooled to 350-450 with 100 DEG C -150 DEG C/min of cooling velocity
DEG C, then, after being cooled to 180-220 DEG C with 1-5 DEG C/min of cooling velocity, the cooled to room temperature in air.
3. a kind of explosion drill bit heat treatment process according to claim 2, it is characterised in that: in secondary quenching process,
Workpiece samming 70-100 minutes, comes out of the stove at 820-850 DEG C and is cooled to 370-430 with 120 DEG C -140 DEG C/min of cooling velocity
DEG C, then, 190-210 DEG C is cooled to 2-5 DEG C/min of cooling velocity.
4. a kind of explosion drill bit heat treatment process according to claim 3, it is characterised in that: in secondary quenching process,
Workpiece samming 80-95 minutes, comes out of the stove at 820-840 DEG C and is cooled to 380-410 with 125 DEG C -135 DEG C/min of cooling velocity
DEG C, then, 190-210 DEG C is cooled to 2-4 DEG C/min of cooling velocity.
5. a kind of explosion drill bit heat treatment process according to claim 4, it is characterised in that: after oil quenching of coming out of the stove, be placed in
It cools in salt bath or air furnace.
6. a kind of explosion drill bit heat treatment process according to claim 5, it is characterised in that: quenching oil is that Houghton is public
The fast quenching oil of production is taken charge of, product type is Houghto-Quench K.
7. a kind of explosion drill bit heat treatment process described in -6 any one according to claim 1, it is characterised in that: preparation is bored
The material of head base includes following components, is formed by mass percentage:
C 0.23-0.26,
Si 1.3-1.65,
Mn 1.1-1.4,
Cr 0.4-0.6,
Ni 1.7-2.0,
Mo 0.5-0.7,
V 0.15-0.25,
S≤0.01,
P≤0.015,
Cu≤0.2, surplus Fe.
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| CN108504954A (en) * | 2018-05-24 | 2018-09-07 | 合肥汇之新机械科技有限公司 | A kind of mine drilling machine high-speed steel drill and its heat treatment method |
| CN110923411B (en) * | 2019-12-11 | 2021-07-30 | 洛阳北方易初摩托车有限公司 | Carburizing and quenching tissue refining process method for box type multipurpose furnace |
| CN113416883B (en) * | 2021-06-24 | 2021-12-31 | 东北大学 | Microalloyed carburized gear steel with ultrahigh strength and preparation method thereof |
| CN116837192B (en) * | 2023-08-31 | 2023-12-01 | 成都先进金属材料产业技术研究院股份有限公司 | Superfine crystal high temperature carburized bearing steel and manufacturing method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5743960A (en) * | 1980-08-29 | 1982-03-12 | Mitsubishi Steel Mfg Co Ltd | Drill stem with excellent heat resistance, corrosion resistance and abrasion resistance |
| JP2001140020A (en) * | 1999-11-16 | 2001-05-22 | Daido Steel Co Ltd | Method for heat-treating carbo-nitriding treated member excellent in pitting resistance |
| CN102703911A (en) * | 2012-06-29 | 2012-10-03 | 长沙黑金刚实业有限公司 | Heat treatment method for down-the-hole drill bit of high-wind pressure drilling tool, and drill bit |
| CN103305668A (en) * | 2013-06-18 | 2013-09-18 | 宜昌市五环钻机具有限责任公司 | Thermal treatment method of 23CrNi3Mo and application of 23CrNi3Mo in drilling tool |
| CN103627971A (en) * | 2013-12-17 | 2014-03-12 | 西宁特殊钢股份有限公司 | Alloy structural steel for large-specification soldering tools and smelting method thereof |
| CN105695679A (en) * | 2016-04-06 | 2016-06-22 | 北京科技大学 | Isothermal quenching process for drill tool steel XGQ25 with high-tenacity complex phase structure distribution |
-
2017
- 2017-06-05 CN CN201710413280.2A patent/CN107099767B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5743960A (en) * | 1980-08-29 | 1982-03-12 | Mitsubishi Steel Mfg Co Ltd | Drill stem with excellent heat resistance, corrosion resistance and abrasion resistance |
| JP2001140020A (en) * | 1999-11-16 | 2001-05-22 | Daido Steel Co Ltd | Method for heat-treating carbo-nitriding treated member excellent in pitting resistance |
| CN102703911A (en) * | 2012-06-29 | 2012-10-03 | 长沙黑金刚实业有限公司 | Heat treatment method for down-the-hole drill bit of high-wind pressure drilling tool, and drill bit |
| CN103305668A (en) * | 2013-06-18 | 2013-09-18 | 宜昌市五环钻机具有限责任公司 | Thermal treatment method of 23CrNi3Mo and application of 23CrNi3Mo in drilling tool |
| CN103627971A (en) * | 2013-12-17 | 2014-03-12 | 西宁特殊钢股份有限公司 | Alloy structural steel for large-specification soldering tools and smelting method thereof |
| CN105695679A (en) * | 2016-04-06 | 2016-06-22 | 北京科技大学 | Isothermal quenching process for drill tool steel XGQ25 with high-tenacity complex phase structure distribution |
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