CN108504954A - A kind of mine drilling machine high-speed steel drill and its heat treatment method - Google Patents
A kind of mine drilling machine high-speed steel drill and its heat treatment method Download PDFInfo
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- CN108504954A CN108504954A CN201810507917.9A CN201810507917A CN108504954A CN 108504954 A CN108504954 A CN 108504954A CN 201810507917 A CN201810507917 A CN 201810507917A CN 108504954 A CN108504954 A CN 108504954A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- 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
- C21D1/26—Methods of annealing
- C21D1/28—Normalising
-
- 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
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
- C21D1/60—Aqueous agents
-
- 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
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
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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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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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
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
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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
- C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
-
- 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
- C23C8/28—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 more than one element being applied in one step
- C23C8/30—Carbo-nitriding
- C23C8/32—Carbo-nitriding of ferrous surfaces
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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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F17/00—Multi-step processes for surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by subclass C21D or C22F or class C25
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
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Abstract
The invention discloses a kind of mine drilling machine high-speed steel drill and its heat treatment methods, are related to high-speed steel drill technical field, this kind of high-speed steel drill includes following elementary composition：Zn、Ca、Ge、Co、Tm、Nd、V、N.Its heat treatment method includes annealing, normalizing, carbo-nitriding, lonneal.The high-speed steel drill high comprehensive performance of the present invention, heat treatment method is simple and practicable, improves the structure and as-cast structure of high-speed steel drill.
Description
Technical field
The present invention relates to high-speed steel drill technical fields, and in particular at a kind of mine drilling machine high-speed steel drill and its heat
Reason method.
Background technology
Mine drilling machine with high-speed steel drill be for execute drilling dig it is necessary to have high temperature resistant, high pressure, high intensity etc.
Characteristic.And after high-speed steel drill casting and forming, fine or not only related with drill bit alloying component, the heat treatment work thereafter of performance
Skill is also extremely crucial.Wherein, heat treatment is that alloy workpiece is heated to certain temperature, and held for some time at such a temperature
Afterwards, it is cooled down with friction speed under suitable occasion, is by changing that metal material is apparent or interior tissue controls therefore
A kind of technique of its performance.Currently, mine drilling machine exists with high-speed steel drill prior heat treatment process refines crystalline substance to matrix
Grain and cooling not reasonable abundant problem, go out that ready-made article drill bit hardness is low and uneven, and brittleness is high, and strength impact value is low, tough
Property is poor.It is difficult to obtain good integrated performance index.In particular, being for the larger drill bit of dimensional thickness, due to smelting condition, partially
Analysis is serious, and internal grain is relatively coarse, then needs to control heat treatment procedure, so that matrix more refine and uniform, is follow-up
Heat treatment and mechanical processing carry out tissue preparation.
The patent application of Publication No. CN103114194A discloses a kind of high-speed steel drill heat-treatment technology method, packet
Include step in detail below：(1) it preheats for the first time；(2) it preheats for second；(3) it heats；(4) cooling, alignment；(5) it is tempered；(6) cold
But to room temperature；(7) it examines, correct.This kind of high-speed steel drill can prevent the problem of bending, deformation, and qualification rate is preferable.
The patent application of Publication No. CN104561500A discloses a kind of mine drill heat treatment method, discloses one
Kind mine drill heat treatment method carries out multistage heat preservation by using quartzy sand bath, multiple carbon-bearing tempering is carried out after quenching, is carried
The high hardness of mine drill, wearability and service life.But it does not have illustrates in conjunction with data, does not also illustrate the alloy steel material
Other performance index.
Invention content
The purpose of the present invention is to provide a kind of mine drilling machine high-speed steel drill and its heat treatment method, this kind of high-speed steel
Drill bit high comprehensive performance, heat treatment method is simple and practicable, improves the structure and as-cast structure of high-speed steel drill.
In order to achieve the above object, the present invention is achieved through the following technical solutions：
A kind of mine drilling machine high-speed steel drill, including following chemical constituent and its weight percent content：
Zn：0.06-0.08%；
Ca：0.05-0.07%；
Ge：0.01-0.05%；
Co：0.12-0.16%；
Tm：0.01-0.02%；
Nd：0.14-0.16%；
V：0.07-0.09%；
N：0.001-0.003%, surplus Fe.
Further, above-mentioned high-speed steel drill includes following chemical constituent and its weight percent content：
Zn：0.07%；
Ca：0.06%；
Ge：0.03%；
Co：0.14%；
Tm：0.015%；
Nd：0.15%；
V：0.08%；
N：0.002%, surplus Fe.
Further, inevitable impurity content≤0.01% in above-mentioned high-speed steel drill.
A kind of heat treatment method of above-mentioned mine drilling machine high-speed steel drill, follows the steps below：
I annealing：High-speed steel drill workpiece is kept the temperature at least 3.5h, vacuum quickly cooling under the conditions of temperature is 575-815 DEG C；
II normalizing：High-speed steel drill workpiece is kept the temperature into 3h under the conditions of temperature is 865 DEG C, 605 DEG C are cooled to 30 DEG C/h,
It comes out of the stove air-cooled；
III carbo-nitriding：After high-speed steel drill workpiece is preheated, permeation 2.7h under the conditions of temperature is 885 DEG C, immersion is quenched
Subzero treatment after fiery medium 15s；
IV lonneal：By high-speed steel drill under the conditions of temperature be temperature is 172 DEG C vacuum tempering 3.6h, it is air-cooled.
Further, in above-mentioned steps I, annealing is to keep the temperature high-speed steel drill workpiece under the conditions of temperature is 815 DEG C
65min, then 705 DEG C of heat preservation 80min are cooled to 25 DEG C/h, 575 DEG C of heat preservation 1.5h are cooled to 35 DEG C/h later.
Further, in above-mentioned steps I, the rate of temperature fall of vacuum quickly cooling is 200 DEG C/h.
Further, in above-mentioned steps III, the preheating temperature of high-speed steel drill workpiece is 715 DEG C, and preheating time is
25min。
Preferably, in above-mentioned steps III, hardening media includes following raw material by weight：6-8 parts of polyethers, cardamom
0.8-1.2 parts of acid esters, 1-1.5 parts of polyethylene glycol stearate, 4-6 parts of porous basalt powder, is gone back 0.3-0.5 parts of potassium nitrate
Former iron powder 2-3 parts, recessed native 3-5 parts of powder, 1.5-2.5 parts of sundew juice, 0.3-0.5 parts of lignin, Banlangen 0.2-0.3
Part, 0.4-0.6 parts of tert-butylation aryl phosphate ester, 0.3-0.5 parts of monoglyceride, 2-3 parts of propylene glycol, 0.3-0.5 parts of antifoaming agent,
1-1.5 parts of water-retaining agent, 0.5-0.7 parts of preservative, 100-120 parts of RO water.
Further, above-mentioned hardening media includes following raw material by weight：7 parts of polyethers, 1 part of myristate, nitre
0.4 part of sour potassium, 1.25 parts of polyethylene glycol stearate, 5 parts of porous basalt powder, 2.5 parts of reduced iron powder, recessed native 4 parts of powder, thatch
2 parts of cream puree juice, 0.4 part of lignin, 0.25 part of Banlangen, 0.5 part of tert-butylation aryl phosphate ester, 0.4 part of monoglyceride,
2.5 parts of propylene glycol, 0.4 part of antifoaming agent, 1.25 parts of water-retaining agent, 0.6 part of preservative, 110 parts of RO water.
Further, in above-mentioned steps III, subzero treatment temperature is -75 DEG C, time 22min.
The present invention has following advantageous effect：The mine drilling machine of the present invention is simply easy with high-speed steel drill heat treatment method
Row, by the proportion optimizing to drill bit alloying element and heat treatment process parameter, through members such as C, Si, Zn, Mn, Ge, Co, Tm, Nd
Drill bit after plain composition coordinated and heat treatment, has form compact and stable alloy phase, improves the metallographic knot of high-speed steel drill
Structure and as-cast structure have reached following effect：
(1) physicochemical property is improved：It is rotten with high strength, good hot-cracking resistance, toughness and chemically-resistant
Corrosion energy significantly improves bit matrix alloy solid solution degree and structure stability before heat treatment, eliminates the tissue of drill bit internal
Stress and thermal stress, case hardness is high and uniform, and brittleness is small, high comprehensive performance, has excellent anti-accident, fatigue resistance
And wearability, the use demand of market, actual production and application can be met significantly, effectively extend the use of high-speed steel drill
Service life improves its application performance, production efficiency and economic benefit；
(2) optimize matrix grain：Refinement, homogenization bit matrix crystal grain, further improve its grain size and compactness,
And prepare good organization condition for postorder processing operation, and then obtain the more excellent high-speed steel drill of performance；
(3) influence of hardening media：The hardening media through hardening function admirable that the present invention uses, can refine improves drill bit
Metallographic structure improves the surface propertys such as the hardness on its surface, wearability, corrosion-resistant.
Specific implementation mode
The specific implementation mode of the present invention is further described with reference to embodiment, following embodiment is only used for more
Technical scheme of the present invention is clearly demonstrated, and not intended to limit the protection scope of the present invention.
Embodiment 1
A kind of mine drilling machine high-speed steel drill, is made of the elementary composition of following weight percent content：
C：0.11%；
Si：0.22%；
Zn：0.06%；
Mn：0.52%；
Cr：0.19%；
Ca：0.05%；
Ge：0.01%；
Co：0.12%；
Tm：0.01%；
Nd：0.14%；
V：0.07%；
N：0.001%, surplus Fe, wherein inevitable impurity content is 0.01%.
The heat treatment method of above-mentioned mine drilling machine high-speed steel drill, follows the steps below：
I annealing：High-speed steel drill workpiece is first kept the temperature into 65min under the conditions of temperature is 815 DEG C, then is cooled to 25 DEG C/h
705 DEG C of heat preservation 80min are cooled to 575 DEG C of heat preservation 1.5h, with rate of temperature fall for 200 DEG C/h vacuum quickly coolings with 35 DEG C/h later；
II normalizing：High-speed steel drill workpiece is kept the temperature into 3h under the conditions of temperature is 865 DEG C, 605 DEG C are cooled to 30 DEG C/h,
It comes out of the stove air-cooled；
III carbo-nitriding：High-speed steel drill workpiece is preheated into 25min under the conditions of temperature is 715 DEG C, is 885 DEG C in temperature
Under the conditions of permeation 2.7h, immerse subzero treatment after hardening media 15s, cryogenic temperature is -75 DEG C, time 22min；
Hardening media includes following raw material by weight：6 parts of polyethers, 0.3 part of potassium nitrate, gathers 0.8 part of myristate
1 part of ethylene glycol stearate, 4 parts of porous basalt powder, 2 parts of reduced iron powder, recessed native 3 parts of powder, 1.5 parts of sundew juice, wood
0.3 part of quality, 0.2 part of Banlangen, 0.4 part of tert-butylation aryl phosphate ester, 0.3 part of monoglyceride, 2 parts of propylene glycol, defoaming
0.3 part of agent, 1 part of water-retaining agent, 0.5 part of preservative, 100 parts of RO water；
IV lonneal：By high-speed steel drill under the conditions of temperature be temperature is 172 DEG C vacuum tempering 3.6h, it is air-cooled.
High-speed steel drill performance parameter after above-mentioned heat treatment is as follows：
①σb：1920±10MPa；
②Ak：124±3J；
③HRC：63±1.
Comparative example group A
Single-factor variable comparative example group A is set relative to embodiment 1, and detects its influence to performance parameter, it is specific to tie
Fruit is as shown in table 1 below：
Table 1
Embodiment 2
A kind of mine drilling machine high-speed steel drill, is made of the elementary composition of following weight percent content：
C：0.13%；
Si：0.23%；
Zn：0.07%；
Mn：0.54%；
Cr：0.20%；
Ca：0.06%；
Ge：0.03%；
Co：0.14%；
Tm：0.015%；
Nd：0.15%；
V：0.08%；
N：0.002%, surplus Fe, wherein inevitable impurity content is 0.01%.
The heat treatment method of above-mentioned mine drilling machine high-speed steel drill, follows the steps below：
I annealing：High-speed steel drill workpiece is first kept the temperature into 65min under the conditions of temperature is 815 DEG C, then is cooled to 25 DEG C/h
705 DEG C of heat preservation 80min are cooled to 575 DEG C of heat preservation 1.5h, with rate of temperature fall for 200 DEG C/h vacuum quickly coolings with 35 DEG C/h later；
II normalizing：High-speed steel drill workpiece is kept the temperature into 3h under the conditions of temperature is 865 DEG C, 605 DEG C are cooled to 30 DEG C/h,
It comes out of the stove air-cooled；
III carbo-nitriding：High-speed steel drill workpiece is preheated into 25min under the conditions of temperature is 715 DEG C, is 885 DEG C in temperature
Under the conditions of permeation 2.7h, immerse subzero treatment after hardening media 15s, cryogenic temperature is -75 DEG C, time 22min；
Hardening media includes following raw material by weight：7 parts of polyethers, 1 part of myristate, 0.4 part of potassium nitrate, poly- second
1.25 parts of glycol stearate, 5 parts of porous basalt powder, 2.5 parts of reduced iron powder, recessed native 4 parts of powder, 2 parts of sundew juice, wood
0.4 part of quality, 0.5 part of tert-butylation aryl phosphate ester, 0.4 part of monoglyceride, 2.5 parts of propylene glycol, disappears at 0.25 part of Banlangen
0.4 part of infusion, 1.25 parts of water-retaining agent, 0.6 part of preservative, 110 parts of RO water；
IV lonneal：By high-speed steel drill under the conditions of temperature be temperature is 172 DEG C vacuum tempering 3.6h, it is air-cooled.
High-speed steel drill performance parameter after above-mentioned heat treatment is as follows：
①σb：1920±10MPa；
②Ak：124±3J；
③HRC：64±1.
Comparative example group B
Single-factor variable comparative example group B is set relative to embodiment 2, and detects its influence to performance parameter, it is specific to tie
Fruit is as shown in table 2 below：
Table 2
Embodiment 3
A kind of mine drilling machine high-speed steel drill, is made of the elementary composition of following weight percent content：
C：0.15%；
Si：0.24%；
Zn：0.08%；
Mn：0.56%；
Cr：0.21%；
Ca：0.07%；
Ge：0.05%；
Co：0.16%；
Tm：0.02%；
Nd：0.16%；
V：0.09%；
N：0.003%, surplus Fe, wherein inevitable impurity content is 0.01%.
The heat treatment method of above-mentioned mine drilling machine high-speed steel drill, follows the steps below：
I annealing：High-speed steel drill workpiece is first kept the temperature into 65min under the conditions of temperature is 815 DEG C, then is cooled to 25 DEG C/h
705 DEG C of heat preservation 80min are cooled to 575 DEG C of heat preservation 1.5h, with rate of temperature fall for 200 DEG C/h vacuum quickly coolings with 35 DEG C/h later；
II normalizing：High-speed steel drill workpiece is kept the temperature into 3h under the conditions of temperature is 865 DEG C, 605 DEG C are cooled to 30 DEG C/h,
It comes out of the stove air-cooled；
III carbo-nitriding：High-speed steel drill workpiece is preheated into 25min under the conditions of temperature is 715 DEG C, is 885 DEG C in temperature
Under the conditions of permeation 2.7h, immerse subzero treatment after hardening media 15s, cryogenic temperature is -75 DEG C, time 22min；
Hardening media includes following raw material by weight：8 parts of polyethers, 0.5 part of potassium nitrate, gathers 1.2 parts of myristate
1.5 parts of ethylene glycol stearate, 6 parts of porous basalt powder, 3 parts of reduced iron powder, recessed native 5 parts of powder, 2.5 parts of sundew juice,
0.5 part of lignin, 0.6 part of tert-butylation aryl phosphate ester, 0.5 part of monoglyceride, 3 parts of propylene glycol, disappears at 0.3 part of Banlangen
0.5 part of infusion, 1.5 parts of water-retaining agent, 0.7 part of preservative, 120 parts of RO water；
IV lonneal：By high-speed steel drill under the conditions of temperature be temperature is 172 DEG C vacuum tempering 3.6h, it is air-cooled.
High-speed steel drill performance parameter after above-mentioned heat treatment is as follows：
①σb：1910±10MPa；
②Ak：124±3J；
③HRC：63±1.
Comparative example group C
Single-factor variable comparative example group C is set relative to embodiment 3, and detects its influence to performance parameter, it is specific to tie
Fruit is as shown in table 3 below：
Table 3
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, although with reference to aforementioned reality
Applying example, invention is explained in detail, for those skilled in the art, still can be to aforementioned each implementation
Technical solution recorded in example is modified or equivalent replacement of some of the technical features.All essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (10)
1. a kind of mine drilling machine high-speed steel drill, which is characterized in that including following chemical constituent and its weight percent content：
Zn：0.06-0.08%；
Ca：0.05-0.07%；
Ge：0.01-0.05%；
Co：0.12-0.16%；
Tm：0.01-0.02%；
Nd：0.14-0.16%；
V：0.07-0.09%；
N：0.001-0.003%, surplus Fe.
2. a kind of mine drilling machine high-speed steel drill according to claim 1, which is characterized in that including following chemical constituent
And its weight percent content：
Zn：0.07%；
Ca：0.06%；
Ge：0.03%；
Co：0.14%；
Tm：0.015%；
Nd：0.15%；
V：0.08%；
N：0.002%, surplus Fe.
3. a kind of mine drilling machine high-speed steel drill according to claim 1, which is characterized in that in the high-speed steel drill
Inevitable impurity content≤0.01%.
4. a kind of heat treatment method according to claim 1-3 any one of them mine drilling machine high-speed steel drill, including move back
Fire, normalizing, carbo-nitriding, lonneal, which is characterized in that
I annealing：At least 3.5h, vacuum quickly cooling are kept the temperature under the conditions of temperature is 575-815 DEG C；
II normalizing：3h is kept the temperature under the conditions of temperature is 865 DEG C, 605 DEG C is cooled to 30 DEG C/h, comes out of the stove air-cooled；
III carbo-nitriding：After high-speed steel drill workpiece is preheated, permeation 2.7h under the conditions of temperature is 885 DEG C immerses quenching and is situated between
Subzero treatment after matter 15s；
IV lonneal：Vacuum tempering 3.6h, air-cooled under the conditions of temperature be temperature is 172 DEG C.
5. a kind of heat treatment method of mine drilling machine high-speed steel drill according to claim 4, which is characterized in that step
In I, the annealing is high-speed steel drill workpiece to be kept the temperature 65min under the conditions of temperature is 815 DEG C, then be cooled to 25 DEG C/h
705 DEG C of heat preservation 80min are cooled to 575 DEG C of heat preservation 1.5h with 35 DEG C/h later.
6. a kind of heat treatment method of mine drilling machine high-speed steel drill according to claim 4, which is characterized in that step
In I, the rate of temperature fall of the vacuum quickly cooling is 200 DEG C/h.
7. a kind of heat treatment method of mine drilling machine high-speed steel drill according to claim 4, which is characterized in that step
In III, the preheating temperature of the high-speed steel drill workpiece is 715 DEG C, preheating time 25min.
8. a kind of heat treatment method of mine drilling machine high-speed steel drill according to claim 4, which is characterized in that step
In III, the hardening media includes following raw material by weight：6-8 parts of polyethers, 0.8-1.2 parts of myristate, potassium nitrate
0.3-0.5 parts, 1-1.5 parts of polyethylene glycol stearate, 4-6 parts of porous basalt powder, 2-3 parts of reduced iron powder, recessed native powder 3-5
Part, 1.5-2.5 parts of sundew juice, 0.3-0.5 parts of lignin, 0.2-0.3 parts of Banlangen, tert-butylation aryl phosphate ester
0.4-0.6 parts, 0.3-0.5 parts of monoglyceride, 2-3 parts of propylene glycol, 0.3-0.5 parts of antifoaming agent, 1-1.5 parts of water-retaining agent, preservative
0.5-0.7 parts, 100-120 parts of RO water.
9. a kind of heat treatment method of mine drilling machine high-speed steel drill according to claim 8, which is characterized in that described
Hardening media includes following raw material by weight：7 parts of polyethers, 1 part of myristate, 0.4 part of potassium nitrate, polyethylene glycol are stearic
1.25 parts of acid esters, 5 parts of porous basalt powder, 2.5 parts of reduced iron powder, recessed native 4 parts of powder, 2 parts of sundew juice, lignin 0.4
Part, 0.25 part of Banlangen, 0.5 part of tert-butylation aryl phosphate ester, 0.4 part of monoglyceride, 2.5 parts of propylene glycol, antifoaming agent 0.4
Part, 1.25 parts of water-retaining agent, 0.6 part of preservative, 110 parts of RO water.
10. a kind of heat treatment method of mine drilling machine high-speed steel drill according to claim 4, which is characterized in that step
In rapid III, the subzero treatment temperature is -75 DEG C, time 22min.
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Application publication date: 20180907 |