CN104120431B - Split type down-the-hold drill bit carburizing manufacturing process - Google Patents
Split type down-the-hold drill bit carburizing manufacturing process Download PDFInfo
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- CN104120431B CN104120431B CN201410367974.3A CN201410367974A CN104120431B CN 104120431 B CN104120431 B CN 104120431B CN 201410367974 A CN201410367974 A CN 201410367974A CN 104120431 B CN104120431 B CN 104120431B
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Abstract
A kind of split type down-the-hold drill bit carburizing manufacturing process, including: screw cutting, the drilling rod top of split and drill bit internal are carried out screw chasing；Preheating, is heated to 600 650 DEG C by the drill bit of separation and drilling rod；Carburizing, keeps 1 1.5 hours sammings after being heated to 880 900 DEG C, rise to 920 930 DEG C and keep 12 14 hours；Pre-cooling, is down to furnace temperature 850 870 DEG C and keeps 0.9 1.1 hours；Quenching, quenches drill bit and drilling rod 25 35 minutes；Tempering, the drill bit after quenching cooling and drilling rod are again heated to 170 190 DEG C and keep 5.8 6.2 hours taking out, then natural cooling；Drill bit carburized layer grinding, drill bit is ground off through the part of Carburization Treatment and guarantees that drill bit grinds off the thickness range of part is 2.5 3 millimeters.The technique of the present invention can be produced and the down-the-hold drill bit of drilling rod split, it is possible to is greatly improved the efficiency of reusing of drilling rod, cost-effective, improves efficiency.
Description
Technical field
The present invention relates to down-the-hold drill bit carburizing manufacturing process, a kind of split type down-the-hold drill bit carburizing manufacturing process.
Background technology
Down-the-hold drill bit is a kind of drill bit for drilling through mine hole, conventional its front end drill bit of drill bit and rear portion drilling rod be one whole
Body, the most once bit wear, whole drill bit all must be changed, and brings the biggest waste.One how is provided to make front end bore
The manufacturing process that head separates with rear portion drilling rod, to produce split type down-the-hold drill bit, becomes the technical barrier needing to be captured.
Summary of the invention
It is an object of the present invention to provide a kind of split type down-the-hold drill bit carburizing manufacturing process, can be produced and drilling rod split by this technique
Down-the-hold drill bit, it is possible to be greatly improved drilling rod reuses efficiency, has saved cost, improves efficiency.
The technical solution used in the present invention is such that
A kind of split type down-the-hold drill bit carburizing manufacturing process, its technique comprises the following steps that 1.1 screw cuttings, by the brill of split
Masthead portion and drill bit internal carry out screw chasing；1.2 preheatings, put into heating furnace by the drill bit of separation and drilling rod and are heated to
600-650℃；1.3 carburizings, the furnace temperature in step 1.2 keeps this temperature 1-1.5 hour samming after being heated to 880-900 DEG C,
Rise to 920-930 DEG C again keep 12-14 hour；1.4 pre-coolings, after step 1.3 completes, are down to 850-870 DEG C also by furnace temperature
Keep this temperature 0.9-1.1 hour；1.5 quenchings, put into the drill bit after step 1.4 processes in quenching oil with drilling rod and quench
Fire 25-35 minute；1.6 tempering, the drill bit after quenching cooling is inserted in heating furnace again with drilling rod, is heated to 170-190 DEG C
And take out after keeping this temperature 5.8-6.2 hour, natural cooling the most in atmosphere；1.7 drill bit carburized layer grindings, drill bit
The part passing through Carburization Treatment grinds off and guarantees that the thickness range grinding off part on drill bit is 2.5-3 millimeter.
In above-mentioned one split type down-the-hold drill bit carburizing manufacturing process, in step 1.1, by the drilling rod top of split with
When drill bit internal carries out screw chasing, the screw thread that screw chasing is tapered or T-shaped；In step 1.2, it is heated to 630 DEG C；
In step 1.3, the furnace temperature in step 1.2 keeps this temperature 1 hour after being heated to 890 DEG C, then rises to 920-930 DEG C
Keep 13 hours；In step 1.4, after step 1.3 completes, furnace temperature is down to 860 DEG C and keeps this temperature 1 hour；
In step 1.5, the drill bit after step 1.4 processes and drilling rod are put into quenching oil quenching 30 minutes；In step 1.6
In, the drill bit after quenching cooling is inserted in heating furnace again with drilling rod, is heated to 180 DEG C and keeps this temperature to take out after 6 hours,
Natural cooling the most in atmosphere；In step 1.7, the thickness that drill bit grinds off part is 2.8 millimeters.
After using said structure, beneficial effects of the present invention is as follows:
The present invention can be produced and the down-the-hold drill bit of drilling rod split by the above-mentioned split type down-the-hold drill bit carburizing manufacturing process of employing,
The efficiency of reusing of drilling rod can be greatly improved, thus saved cost and improve efficiency.In the production of detachable drill bit
Guaranteeing to connect the high tenacity of material and high intensity at screw thread is the key solving connecting portion problem, and the present invention is above-mentioned by using
Carburization process can be good at solving this problem.
After the detailed description reading embodiments of the present invention, the features and advantages of the invention will become clearer from.
Detailed description of the invention
With detailed description of the invention, the present invention is further detailed explanation below, but it should explanation, protection scope of the present invention is not
It is only limited to this.
Embodiment 1:
A kind of split type down-the-hold drill bit carburizing manufacturing process, its technique comprises the following steps that 1.1 screw cuttings, by the brill of split
Masthead portion and drill bit internal carry out screw chasing, wherein, the screw thread that screw chasing is tapered；1.2 preheatings, the drill bit that will separate
Putting into heating furnace with drilling rod and be heated to 600 DEG C, heating furnace can use multiplex heating furnace；1.3 carburizings, in step 1.2
Furnace temperature be heated to 880 DEG C after keep this temperature 1 hour, then rise to 920 DEG C and keep this temperature 12 hours；1.4 pre-coolings,
After step 1.3 completes, furnace temperature is down to 850 DEG C and keeps this temperature 0.9 hour；1.5 quenchings, will be through step 1.4
Drill bit after process and drilling rod put into quenching oil quenching 25 minutes；1.6 tempering, the drill bit after quenching cooling is put again with drilling rod
Enter in heating furnace, be heated to 170 DEG C and keep this temperature to take out after 5.8 hours, natural cooling the most in atmosphere；1.7 bore
Head carburized layer grinding, part drill bit being passed through Carburization Treatment grinds off and guarantees that the thickness range grinding off part is 2.5 millimeters,
To guarantee drill bit toughness.
Embodiment 2:
A kind of split type down-the-hold drill bit carburizing manufacturing process, its technique comprises the following steps that 1.1 screw cuttings, by the brill of split
Masthead portion and drill bit internal carry out screw chasing, wherein, the screw thread that screw chasing is tapered；1.2 preheatings, the drill bit that will separate
Putting into heating furnace with drilling rod and be heated to 630 DEG C, heating furnace can use multiplex heating furnace；1.3 carburizings, in step 1.2
Furnace temperature be heated to 880 DEG C after keep this temperature 1.3 hours, then rise to 9250 DEG C and keep this temperature 132 hours；1.4 it is pre-
Cold, after step 1.3 completes, furnace temperature is down to 860 DEG C and keeps this temperature 1 hour；1.5 quenchings, will be through step 1.4
Drill bit after process and drilling rod put into quenching oil quenching 30 minutes；1.6 tempering, the drill bit after quenching cooling is put again with drilling rod
Enter in heating furnace, be heated to 180 DEG C and keep this temperature to take out after 6 hours, natural cooling the most in atmosphere；1.7 drill bit
Carburized layer grinding, drill bit is passed through the part of Carburization Treatment and grinds off and guarantee that drill bit grinds off the thickness range of part is 2.8 millis
Rice, to guarantee drill bit toughness.
Embodiment 3:
A kind of split type down-the-hold drill bit carburizing manufacturing process, its technique comprises the following steps that 1.1 screw cuttings, by the brill of split
Masthead portion and drill bit internal carry out screw chasing, and wherein, screw chasing becomes parallel screw thread；1.2 preheatings, the drill bit that will separate
Putting into heating furnace with drilling rod and be heated to 650 DEG C, heating furnace can use multiplex heating furnace；1.3 carburizings, in step 1.2
Furnace temperature be heated to 880 DEG C after keep this temperature 1 hour, then rise to 930 DEG C and keep this temperature 14 hours；1.4 pre-coolings,
After step 1.3 completes, furnace temperature is down to 870 DEG C and keeps this temperature 1.1 hours；1.5 quenchings, will be through step 1.4
Drill bit after process and drilling rod put into quenching oil quenching 35 minutes；1.6 tempering, the drill bit after quenching cooling is put again with drilling rod
Enter in heating furnace, be heated to 170-190 DEG C and keep this temperature to take out after 6.2 hours, natural cooling the most in atmosphere；1.7
Drill bit carburized layer grinding, drill bit is passed through the part of Carburization Treatment and grinds off and guarantee that drill bit grinds off the thickness range of part is 3
Millimeter, to guarantee drill bit toughness.
Although describing the preferred embodiments of the present invention, but those skilled in the art can scope of the following claims it
Inside make various deformation or amendment, as long as less than the protection domain described by claim of the present invention, all should be in the present invention
Protection domain within.
Claims (2)
1. a split type down-the-hold drill bit carburizing manufacturing process, it is characterised in that its technique comprises the following steps that
1.1 screw cuttings, carry out screw chasing by the drilling rod top of split and drill bit internal；
1.2 preheatings, put into heating furnace by the drill bit of separation and drilling rod and are heated to 600-650 DEG C；
1.3 carburizings, the furnace temperature in step 1.2 keeps this temperature 1-1.5 hour samming, then rises after being heated to 880-900 DEG C
Keep 12-14 hour to 920-930 DEG C；
1.4 pre-coolings, after step 1.3 completes, are down to furnace temperature 850-870 DEG C and keep this temperature 0.9-1.1 hour；
1.5 quenchings, put into quenching oil quenching 25-35 minute by the drill bit after step 1.4 processes and drilling rod；
1.6 tempering, the drill bit after quenching cooling is inserted in heating furnace again with drilling rod, is heated to 170-190 DEG C and keeps this temperature
Take out after spending 5.8-6.2 hour, natural cooling the most in atmosphere；
1.7 drill bit carburized layer grindings, part drill bit being passed through Carburization Treatment grinds off and guarantees that drill bit grinds off the thickness of part
Scope is 2.5-3 millimeter.
One the most according to claim 1 split type down-the-hold drill bit carburizing manufacturing process, it is characterised in that:
In step 1.1, when the drilling rod top of split and drill bit internal are carried out screw chasing, screw chasing is tapered or T
The screw thread of type；
In step 1.2, it is heated to 630 DEG C；
In step 1.3, the furnace temperature in step 1.2 keeps this temperature 1 hour after being heated to 890 DEG C, then rises to 920-930 DEG C
Keep 13 hours；
In step 1.4, after step 1.3 completes, furnace temperature is down to 860 DEG C and keeps this temperature 1 hour；
In step 1.5, the drill bit after step 1.4 processes and drilling rod are put into quenching oil quenching 30 minutes；
In step 1.6, the drill bit after quenching cooling is inserted in heating furnace again with drilling rod, is heated to 180 DEG C and keeps this temperature
Take out after spending 6 hours, natural cooling the most in atmosphere；
In step 1.7, drill bit is 2.8 millimeters by grinding off thickness partly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410367974.3A CN104120431B (en) | 2014-07-29 | 2014-07-29 | Split type down-the-hold drill bit carburizing manufacturing process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410367974.3A CN104120431B (en) | 2014-07-29 | 2014-07-29 | Split type down-the-hold drill bit carburizing manufacturing process |
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| CN104120431A CN104120431A (en) | 2014-10-29 |
| CN104120431B true CN104120431B (en) | 2016-08-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104831291A (en) * | 2015-05-11 | 2015-08-12 | 吴芳吉 | Carburization process for automobile hub |
| CN109295410A (en) * | 2018-11-27 | 2019-02-01 | 曾华 | A kind of down-the-hold drill bit carburizing manufacturing process |
| CN110863098A (en) * | 2019-10-23 | 2020-03-06 | 武钢中冶工业技术服务有限公司 | Heat treatment method for roller of 55SiMoV material mining roller bit |
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| SU1032030A1 (en) * | 1979-05-17 | 1983-07-30 | Курский Политехнический Институт | Method for producing drilling tools |
| SE515518C2 (en) * | 1998-09-28 | 2001-08-20 | Uniroc Ab | String drill string thread for striking rock drilling |
| JP2000256746A (en) * | 1999-03-08 | 2000-09-19 | Daido Steel Co Ltd | Method for heat treating hollow steel rod |
| JP4954542B2 (en) * | 2005-12-09 | 2012-06-20 | 三菱マテリアル株式会社 | Drilling rod, drilling bit and drilling tool |
| CN201083085Y (en) * | 2007-07-19 | 2008-07-09 | 李斌 | Drilling rod without welding down-the-hole drill |
| CN102703911B (en) * | 2012-06-29 | 2014-03-05 | 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 |
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