CN110129526A - A kind of preparation method of high wind pressure diamond down-the-hold drill bit steel body and drill bit using the steel body - Google Patents

A kind of preparation method of high wind pressure diamond down-the-hold drill bit steel body and drill bit using the steel body Download PDF

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Publication number
CN110129526A
CN110129526A CN201910458656.0A CN201910458656A CN110129526A CN 110129526 A CN110129526 A CN 110129526A CN 201910458656 A CN201910458656 A CN 201910458656A CN 110129526 A CN110129526 A CN 110129526A
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CN
China
Prior art keywords
steel
drill bit
wind pressure
hold drill
diamond
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910458656.0A
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Chinese (zh)
Inventor
张美玲
方海江
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HENAN SIFANG SUPER HARD MATERIAL CO Ltd
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HENAN SIFANG SUPER HARD MATERIAL CO Ltd
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Priority to CN201910458656.0A priority Critical patent/CN110129526A/en
Publication of CN110129526A publication Critical patent/CN110129526A/en
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    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18Hardening; Quenching with or without subsequent tempering
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D6/00Heat treatment of ferrous alloys
    • C21D6/04Hardening by cooling below 0 degrees Celsius
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/22Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for drills; for milling cutters; for machine cutting tools
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING 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
    • C23C8/00Solid 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
    • C23C8/06Solid 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
    • C23C8/08Solid 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
    • C23C8/20Carburising
    • C23C8/22Carburising of ferrous surfaces
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00Drill bits
    • E21B10/46Drill bits characterised by wear resisting parts, e.g. diamond inserts

Abstract

The invention belongs to the drill bits of drilling tool field more particularly to the preparation method and use of a kind of high wind pressure diamond down-the-hold drill bit steel body steel body.The method includes the hot briquetting die forgings to the raw material steel that the steel body is made, and after die forging steel quenching, carburizing and tempering, further include carrying out carrying out subzero treatment after quenching again to the steel after tempering, is then tempered again up to the high wind pressure diamond down-the-hold drill bit steel body.Diamond tooth and the steel body end face cooperate up to high wind pressure diamond down-the-hold drill bit.Steel body produced by the present invention have passed through heating for multiple times and working process after cooling, so that the modeling of steel body, tough performance greatly improve, fatigue resistance is improved, not easy to break, and shock resistance is high;The surface metallographic structure and surface hardness that steel body is improved by subzero treatment improve spline position and the outer peripheral wearability of tooth head, to extend the service life of diamond down-the-hold drill bit.

Description

A kind of preparation method of high wind pressure diamond down-the-hold drill bit steel body and use the steel body Drill bit
Technical field
The invention belongs to the preparation method of drilling tool field more particularly to a kind of high wind pressure diamond down-the-hold drill bit steel body and make With the drill bit of the steel body.
Background technique
High wind pressure diamond down-the-hold drill bit is for structure, including steel body and the cooperation diamond on steel body end face again Tooth, steel body in the prior art are made of the steel after the heat treatment of carburizing and quenching and lonneal, opposite steel raw material sheet For body, respective handling has improved its structural behaviour, but with the promotion and work in diamond tooth service life in the prior art Journey implements speed quickening and efficiency and the requirement of cost control improves, existing market to the performance requirement of steel body also increasingly Height, steel body in the prior art has been difficult to meet the needs of market, such as steel body in the prior art, in the longevity of diamond tooth It is just seriously worn before life not yet termination, leads to the fracture of diamond tooth and fall off.Therefore, how to design a kind of high-impact, High abrasion, the high wind pressure diamond down-the-hold drill bit of high life become urgent and solve technical problem.
Summary of the invention
The object of the present invention is to provide a kind of preparation method of high wind pressure diamond down-the-hold drill bit steel body and use the steel body Drill bit, the invention proposes a kind of new steel body manufacturing methods, can effectively improve the service life of steel body, make it have high-impact It hits and wear-resisting property.
In order to solve the above technical problems, The technical solution adopted by the invention is as follows:
A kind of preparation method of high wind pressure diamond down-the-hold drill bit steel body, including the heating to the raw material steel that the steel body is made Quenching, carburizing and the tempering of steel after molding die forging and die forging, steps are as follows: carrying out to the steel after tempering Subzero treatment is carried out after quenching again, is then tempered again up to the high wind pressure diamond down-the-hold drill bit steel body.
Preferably, the method also includes in the dimensioned to the steel after quenching, before carburizing, and to described Structure processing of the steel after tempering, before quenching again.Specifically, dimensioned is added using numerically controlled processing equipments such as numerically controlled lathes Work;The structure is processed as steel body and carries out the last processing and forming of steel body structure, including repairs end face, skiving face, dump tank and go The processing projects such as burr.
Preferably, the processing mode quenched again is as follows: the steel are heated under the conditions of 800 DEG C~840 DEG C 2h~4h, it is then cooling in 40 DEG C~80 DEG C of cooling oil.
Preferably, the mode of the subzero treatment is as follows: the steel are cooled down 2h under conditions of -80 DEG C~-30 DEG C ~3h.
Preferably, the tempering again is lonneal, and processing mode is as follows: by the steel in 180 DEG C~230 DEG C items 4h~5h is heated under part, is then air-cooled to room temperature.
Preferably, the hot briquetting die forging processing of the raw material steel is as follows: by the heat steel to 850 DEG C~1050 DEG C, then it is forged to basic forming, places into and carries out molding die forging in forging mold.
Preferably, the steel after the die forging be quenched as follows: by it under conditions of 880 DEG C~920 DEG C 2h ~4h, it is then cooling in 40 DEG C~80 DEG C cooling oils, and 4h~5h is heated under conditions of 650 DEG C~700 DEG C again, finally It is air-cooled to room temperature.
Preferably, it is as follows to carry out Carburization Treatment for the steel: carried out when being heated to 900 DEG C~930 DEG C 300min~ The Carburization Treatment of 500min makes its case depth 1.0mm~1.4mm, and surface carbon concentration is 0.75%~1.1%, then exists It is cooling in 40 DEG C~80 DEG C cooling oils.
Preferably, it is as follows to carry out tempering for the steel after the Carburization Treatment: by it in 650 DEG C~700 DEG C of condition Lower heating 4h~5h, is then air-cooled to room temperature.
Diamond down-the-hold drill bit including steel body made from the above method, more specifically, by diamond tooth and the steel Body end face cooperate up to high wind pressure diamond down-the-hold drill bit.
Compared with the prior art, the invention has the following advantages:
1) down-the-hold drill bit steel body of the present invention have passed through heating for multiple times and working process after cooling, so that steel body Modeling, tough performance greatly improve, and fatigue resistance is improved, not easy to break, and shock resistance is high;
2) present invention improves the surface metallographic structure and surface hardness of the down-the-hold drill bit steel body by subzero treatment, improves Spline position and the outer peripheral wearability of tooth head, to extend the service life of diamond down-the-hold drill bit.
Detailed description of the invention
Fig. 1 is steel described in embodiment 2 after quenching again, the surface metallographic structure electron microscope before subzero treatment;
Fig. 2 is steel described in embodiment 2 after quenching again, the core structure electron microscope before subzero treatment;
Fig. 3 is surface metallographic structure electron microscope of the steel after subzero treatment described in embodiment 2;
Fig. 4 is the core structure electron microscope figure after steel subzero treatment described in embodiment 2.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and It is not used in the restriction present invention.
Embodiment 1
A kind of preparation method of high wind pressure diamond down-the-hold drill bit steel body, steps are as follows:
1) the hot briquetting die forging to the raw material steel that the steel body is made: by the raw material steel in being heated in heating furnace 850 DEG C, then it is forged to basic forming, places into and carry out molding die forging in forging mold;
2) quench for the first time: by the steel after die forging under conditions of 880 DEG C 4h, it is then cooling in 40 DEG C of cooling oils, and again 5h is heated under conditions of 650 DEG C, is finally air-cooled to room temperature;
3) steel quenched for the first time dimensioned: are subjected to numerical control processing according to steel body size;
4) Carburization Treatment: by steel after dimensioned at the carburizing for being heated to 900 DEG C in carburizing heating furnace and carrying out 500min Reason makes its case depth 1.0mm~1.4mm, and surface carbon concentration is 0.75%~1.1%, then cold in 40 DEG C of cooling oils But;
5) high tempering: steel after Carburization Treatment are put into heating furnace, and 5h is heated under conditions of 650 DEG C, is then air-cooled to Room temperature;
6) it is machined: the steel after high tempering being machined, including repair end face, skiving face, dump tank and unhairing Pierce operation;
7) it quenches again: the steel after machining being put into heating furnace, 4h is heated under the conditions of 800 DEG C, then at 40 DEG C Cooling oil in it is cooling;
8) subzero treatment: quenched steel will be put into deep cooling box again, with -80 DEG C under conditions of cooling 2h;
9) lonneal is tempered again: the steel after subzero treatment are put into heating furnace, heat 5h under the conditions of 180 DEG C, Then room temperature is air-cooled to get the steel body of the high wind pressure diamond down-the-hold drill bit.
The steel body and diamond tooth are assembled to get high wind pressure diamond down-the-hold drill bit.
Embodiment 2
A kind of preparation method of high wind pressure diamond down-the-hold drill bit steel body, steps are as follows:
1) the hot briquetting die forging to the raw material steel that the steel body is made: by the raw material steel in being heated in heating furnace 1050 DEG C, then it is forged to basic forming, places into and carry out molding die forging in forging mold;
2) quench for the first time: by the steel after die forging under conditions of 920 DEG C 2h, it is then cooling in 80 DEG C of cooling oils, and again 4h is heated under conditions of 700 DEG C, is finally air-cooled to room temperature;
3) steel quenched for the first time dimensioned: are subjected to numerical control processing according to steel body size;
4) Carburization Treatment: by steel after dimensioned at the carburizing for being heated to 930 DEG C in carburizing heating furnace and carrying out 300min Reason makes its case depth 1.0mm~1.4mm, and surface carbon concentration is 0.75%~1.1%, then cold in 80 DEG C of cooling oils But;
5) high tempering: steel after Carburization Treatment are put into heating furnace, and 4h is heated under conditions of 700 DEG C, is then air-cooled to Room temperature;
6) it is machined: the steel after high tempering being machined, including repair end face, skiving face, dump tank and unhairing Pierce operation;
7) it quenches again: the steel after machining being put into heating furnace, 2h is heated under the conditions of 840 DEG C, then at 80 DEG C Cooling oil in it is cooling;
8) subzero treatment: quenched steel will be put into deep cooling box again, with -30 DEG C under conditions of cooling 3h;
9) lonneal is tempered again: the steel after subzero treatment are put into heating furnace, heat 4h under the conditions of 180 DEG C, Then room temperature is air-cooled to get the steel body of the high wind pressure diamond down-the-hold drill bit.
The steel body and diamond tooth are assembled to get high wind pressure diamond down-the-hold drill bit.
Embodiment 3
A kind of preparation method of high wind pressure diamond down-the-hold drill bit steel body, steps are as follows:
1) the hot briquetting die forging to the raw material steel that the steel body is made: by the raw material steel in being heated in heating furnace 900 DEG C, then it is forged to basic forming, places into and carry out molding die forging in forging mold;
2) quench for the first time: by the steel after die forging under conditions of 900 DEG C 3h, it is then cooling in 50 DEG C of cooling oils, and again 4h is heated under conditions of 680 DEG C, is finally air-cooled to room temperature;
3) steel quenched for the first time dimensioned: are subjected to numerical control processing according to steel body size;
4) Carburization Treatment: by steel after dimensioned at the carburizing for being heated to 920 DEG C in carburizing heating furnace and carrying out 400min Reason, 5) high tempering: steel after Carburization Treatment are put into heating furnace, 4h is heated under conditions of 670 DEG C, is then air-cooled to room Temperature;
6) it is machined: the steel after high tempering being machined, including repair end face, skiving face, dump tank and unhairing Pierce operation;
7) it quenches again: the steel after machining being put into heating furnace, 3h is heated under the conditions of 830 DEG C, then at 60 DEG C Cooling oil in it is cooling;
8) subzero treatment: quenched steel will be put into deep cooling box again, with -40 DEG C under conditions of cooling 2.5h;
9) lonneal is tempered again: the steel after subzero treatment are put into heating furnace, heat 4h under the conditions of 200 DEG C, Then room temperature is air-cooled to get the steel body of the high wind pressure diamond down-the-hold drill bit.
The steel body and diamond tooth are assembled to get high wind pressure diamond down-the-hold drill bit.
By embodiment 1-3 the method, it is implemented/is not carried out two kinds high wind pressure diamond made from subzero treatment step Down-the-hold drill bit carries out routine test, obtains following performance parameter:

Claims (10)

1. a kind of preparation method of high wind pressure diamond down-the-hold drill bit steel body, including adding to the raw material steel that the steel body is made The quenching, carburizing and tempering of steel after thermoforming die forging and die forging, which is characterized in that steps are as follows: to tempering Steel afterwards carry out carrying out subzero treatment after quenching again, are then tempered again up to the high wind pressure diamond down-the-hold drill bit steel Body.
2. the preparation method of high wind pressure diamond down-the-hold drill bit steel body as described in claim 1, which is characterized in that the method Further include in the dimensioned to the steel after quenching, before carburizing, and to the steel after tempering, again quench before Structure processing.
3. the preparation method of high wind pressure diamond down-the-hold drill bit steel body as described in claim 1, which is characterized in that it is described again The processing mode of quenching is as follows: the steel being heated 2h~4h under the conditions of 800 DEG C~840 DEG C, then at 40 DEG C~80 DEG C Cooling oil in it is cooling.
4. the preparation method of high wind pressure diamond down-the-hold drill bit steel body as described in claim 1, which is characterized in that the deep cooling The mode of processing is as follows: the steel are cooled down 2h~3h under conditions of -80 DEG C~-30 DEG C.
5. the preparation method of high wind pressure diamond down-the-hold drill bit steel body as described in claim 1, which is characterized in that it is described again Tempering is lonneal, and processing mode is as follows: the steel are heated into 4h~5h under the conditions of 180 DEG C~230 DEG C, it is then air-cooled To room temperature.
6. the preparation method of high wind pressure diamond down-the-hold drill bit steel body as described in claim 1, which is characterized in that the raw material Steel hot briquetting die forging processing it is as follows: by the heat steel to 850 DEG C~1050 DEG C, then it is forged to substantially at Type places into and carries out molding die forging in forging mold.
7. the preparation method of high wind pressure diamond down-the-hold drill bit steel body as described in claim 1, which is characterized in that the die forging Steel afterwards be quenched as follows:
By it under conditions of 880 DEG C~920 DEG C 2h~4h, it is then cooling in 40 DEG C~80 DEG C cooling oils, and again in 650 DEG C~700 DEG C under conditions of heat 4h~5h, be finally air-cooled to room temperature.
8. the preparation method of high wind pressure diamond down-the-hold drill bit steel body as described in claim 1, which is characterized in that the steel It is as follows to carry out Carburization Treatment: carrying out the Carburization Treatment of 300min~500min when being heated to 900 DEG C~930 DEG C, keeps it hard Change layer depth is 1.0mm~1.4mm, and surface carbon concentration is 0.75%~1.1%, then cooling in 40 DEG C~80 DEG C cooling oils.
9. the preparation method of high wind pressure diamond down-the-hold drill bit steel body as described in claim 1, which is characterized in that the carburizing Treated, and steel progress tempering is as follows: it being heated 4h~5h under conditions of 650 DEG C~700 DEG C, is then air-cooled to Room temperature.
10. including the diamond down-the-hold drill bit of steel body made from any the method for claim 1-9.
CN201910458656.0A 2019-05-29 2019-05-29 A kind of preparation method of high wind pressure diamond down-the-hold drill bit steel body and drill bit using the steel body Pending CN110129526A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111360362A (en) * 2020-04-01 2020-07-03 中国科学院理化技术研究所 Deep cooling treatment method for brazing diamond tool and brazing diamond tool
CN111961974A (en) * 2020-08-20 2020-11-20 本钢板材股份有限公司 Preparation method of drill rod tail shaft of tapping machine

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Publication number Priority date Publication date Assignee Title
CN111360362A (en) * 2020-04-01 2020-07-03 中国科学院理化技术研究所 Deep cooling treatment method for brazing diamond tool and brazing diamond tool
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