CN85102269B - Spherical tooth type series small diameter hard alloy integral drill rod - Google Patents
Spherical tooth type series small diameter hard alloy integral drill rodInfo
- Publication number
- CN85102269B CN85102269B CN85102269A CN85102269A CN85102269B CN 85102269 B CN85102269 B CN 85102269B CN 85102269 A CN85102269 A CN 85102269A CN 85102269 A CN85102269 A CN 85102269A CN 85102269 B CN85102269 B CN 85102269B
- Authority
- CN
- China
- Prior art keywords
- tooth
- ball profile
- drill rod
- cemented tungsten
- tungsten carbide
- Prior art date
- 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.)
- Expired
Links
- 239000000956 alloy Substances 0.000 title claims abstract description 47
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 47
- 238000005219 brazing Methods 0.000 claims abstract description 5
- 230000006698 induction Effects 0.000 claims abstract description 5
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 32
- 239000000843 powder Substances 0.000 claims description 24
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 230000007704 transition Effects 0.000 claims description 5
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 claims description 4
- 238000009826 distribution Methods 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 4
- 230000033228 biological regulation Effects 0.000 claims description 3
- 238000005553 drilling Methods 0.000 abstract description 19
- 239000011435 rock Substances 0.000 abstract description 14
- 230000006978 adaptation Effects 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 7
- 239000004744 fabric Substances 0.000 description 6
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000010437 gem Substances 0.000 description 1
- 229910001751 gemstone Inorganic materials 0.000 description 1
- 239000010438 granite Substances 0.000 description 1
- 210000000003 hoof Anatomy 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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- Earth Drilling (AREA)
Abstract
The invention relates to a button-shaped series small-diameter hard alloy integral drill rod, belonging to a rock drilling tool. The defects that the tooth-shaped hard alloy integral drill rod in the prior art is limited in adaptation to rock drill models and rock strata, the service lives of a drill rod body and a head cone are greatly different, the early rejection rate is high and the like are mainly overcome. The invention adopts special geometric parameters and structural forms, adopts a 'bottom-sinking induction brazing' tooth fixing process, has the side tooth inclination angle of 12-30 degrees, the diameter of a head cone of 30-50 millimeters and 3-9 fixed teeth, thereby basically matching the service lives of a drill rod body and the head cone, being suitable for light and medium hydraulic, pneumatic, electric and internal combustion rock drills and being suitable for drilling hard, medium and soft rock stratums.
Description
The invention belongs to drilling tool.
The construction of rock drilling at present mainly is that the hard alloy drill that will make respectively and drill steel adopt taper hole or be threaded, and is contained in then to carry out on the rock drilling machinery.Hard alloy drill divides large, medium and small various different-diameter (diameter phi is minor diameter below 50 millimeters), and kind has the shape of a hoof (in-line), cross, three-blade shape and the various different series of ball profile of tooth.Its medium-small diameter ball profile of tooth hard alloy drill creeps in the rock of compressive strength 1000-1200 Kilogram Force Per Square Centimeter, on average not grinding the life-span is 150-200 rice, creep in the rock of compressive strength 1400-1800 Kilogram Force Per Square Centimeter, on average not grinding the life-span is 50-150 rice.Use above hard alloy drill, because of the coupling part absorbs energy, jewel hole speed and drilling tool life-span all will reduce, also need to load and unload bore bit, and in work progress, also can occur come off phenomenon in the hole of bore bit, give continue construction or powder charge, explosion brings inconvenience, and hard alloy drill and drill steel are made an integral body, promptly produce a kind of cemented tungsten carbide integral drill rod, can remedy above-mentioned deficiency.
The HongKong versions of being compiled in collaboration with by Sweden-Chinese trade committee in 1984 " Sweden's product technology and service " (one nine eight three-8 4 years manufacturer's register, product introduction) are introduced world-renowned bore bit company-Sandvik and there are in-line and three-blade shape monoblock drill steel in Fegersta two companies.In Japan " bright and Industry Co., Ltd " " TOYO BIT.ROD " (Japan's board drill bit, drilling rod) sample (receive in February, 1985), also introducing has the in-line monoblock drill steel.As ball profile of tooth cemented tungsten carbide integral drill rod, in French 1974 " Destroyer " Drill Steels samples, once introduced a kind of " tapered pole tooth cemented tungsten carbide integral drill rod ", this monoblock drill steel mainly is made of the body of rod and forecone two parts, cone end cloth tapered pole tooth carbide alloy, the body of rod adopts alloy hexagonal cored steel, and forecone takes to forge a machine moulding.Its concrete structure parameter is, 40,42,48 millimeters of head diameter φ, the body of rod is 22,25 millimeters alloy hexagonal cored steels, hammer drill length is 1800,2200,2400,2800,3200,3600 millimeters, eight in tapered pole tooth, the heel teeth inclination angle is 35 °～45 °, and four invaginating ditches (powder exhaust groove) are arranged.A side weep hole, the water hole diameter is more than or equal to the tooth footpath, and the cloth tooth surface shape is the plane, takes asymmetric shape cloth tooth, close, the middle tooth of heel teeth is rare, bit shank is of a size of 22 * 108,25 * 108,25 * 159 millimeters, adopts interference fit to connect craft of consolidating teeth, only is suitable for using in little hammer drill of ballistic work and soft rock, and heel teeth takes off broken serious, pass portion cone and body of rod life-span differ greatly, and early stage scrappage height is therefore unpopular on international drilling tool market.
The ball profile of tooth cemented tungsten carbide integral drill rod of introducing among the BP prospectus GB2099890A, constitute by the body of rod and cone two parts, cone diameter is 30～45 millimeters of φ, cone end has a conical surface, the vertical conical surface is furnished with hemisphere dentation carbide alloy, and the carbide alloy diameter is 7～10 millimeters, and the cloth tooth pitch is 5.5～7.5 millimeters, high grinningly is 2.4～3.0 millimeters, and the transition region between the body of rod and the cone is the serpentine arc.
The objective of the invention is to make a kind of both applicable to various rock drilling machineries, again can the various different minor diameter eyelets of Drilling, and can also be suitable for various hard, in the ball profile of tooth cemented tungsten carbide integral drill rod that creeps in the hard and soft stratum, its rock drilling life-span and drilling speed will be higher than ball profile of tooth serial carbide alloy bore bit, hammer drill head and body of rod life-span mate substantially, unload the pricker time on saving material, save reaching, improve the construction condition of labor, speed up the work, reduce the purpose of construction costs.
Ball geal serial small-diametered hard metal one-piece bot pick of the present invention is made of the body of rod 9 and forecone 2 two parts, the body of rod 9 adopts alloy hexagonal cored steel, forecone 2 is taked forging-machine moulding, forecone 2 end faces are furnished with ball profile of tooth carbide alloy 1, there are invaginating ditch (powder exhaust groove) 7 and weep hole 6 in the side, wherein forecone 2 height are 15～30 millimeters, diameter is a φ 30-50 millimeter, select diameter that φ 30 is arranged, 32,34,36,38,40,42,44,46,48,50 millimeters, cone 2 ends have a conical surface 4 at least, according to the different-diameter or the different number of teeth, can also have a circular platform 3 at the conical surface 4 tops, also can also have one group of sword face 11 and the tangent formation one strip platform 12 of the conical surface in cone end, the vertical conical surface 4, circular platform 3, strip platform 12 is furnished with ball profile of tooth carbide alloy 1, the cloth number of teeth is 3～9, ball profile of tooth carbide alloy 1 crown such as is shaped as at strong tooth (bullet tooth) and hemisphere tooth, material is generally selected YJ series, YJ(H) series, YG(contains YG105, YG110) serial high-quality mine hard alloy, cloth tooth mode is individual layer or bilayer, ball profile of tooth carbide alloy 1 height overall is 14～17 millimeters, high grinningly is 4～5.5 millimeters, tooth directly is 8～12 millimeters of φ, the heel teeth inclination angle is 12 °～30 °, maximum tooth is apart from being less than or equal to 20 millimeters, according to cone 2 different-diameters and the different numbers of teeth, can there be 2～4 invaginating powder exhaust groove 7(to comprise auxiliary powder exhaust groove 10 in cone 2 sides), 1～3 side weep hole 6 is arranged, on the conical surface 4 or circular platform 3,1～2 front weep hole 5 can also be arranged, 2～4 of weep hole sums, forecone 2 clearance angles are 2 °～3 °, transition region 8 between cylinder and the forecone 2 is the serpentine circular arc, the hammer drill total length is 400～4800 millimeters, selecting length is 400,600,800,1000,1200,1400,1600,1800,2000,2200,2400,2600,2800,3000,3200,3600,4000,4800 millimeters, bit shank is of a size of B19 * 108, B22 * 108, B25 * 108, B25 * 159, B25 and B32(are light), B32 left hand thread, the body of rod 9 hardness are HRC30～40, bit shank hardness is HRC49～55, screw thread bit shank heat treatment rear surface hardness HRC52～58, centre hardness HRC44～50, other technical requirements should meet YB2003～78, the regulation of YB2004～78, ball profile of tooth carbide alloy 1 adopts " sinking to the bottom the formula induction brazing " craft of consolidating teeth permanent tooth.
According to the different numbers of teeth of the ball profile of tooth carbide alloy 1 of hammer drill cone 2 head different-diameters and welding, ball profile of tooth cemented tungsten carbide integral drill rod can have following a series of product, sees accompanying drawing 1～10 for details.
Fig. 1 is five ball tooth cemented tungsten carbide integral drill rod lateral views
Fig. 2 is five ball tooth cemented tungsten carbide integral drill rod elevations
Fig. 3,4 is three ball tooth cemented tungsten carbide integral drill rod elevations
Fig. 5,6 is four ball tooth cemented tungsten carbide integral drill rod elevations
Fig. 7 is six ball tooth cemented tungsten carbide integral drill rod elevations
Fig. 8 is seven ball tooth cemented tungsten carbide integral drill rod elevations
Fig. 9 is eight ball tooth cemented tungsten carbide integral drill rod elevations
Figure 10 is nine ball tooth cemented tungsten carbide integral drill rod elevations
The present invention compares with ball profile of tooth hard alloy drill, do not have the elastic-plastic deformation of connecting portion to absorb ballistic work, the effective rate of utilization of its impact energy can improve 8～25%, and its bilateral row powder gap is comparable big 8～10 millimeters with diameter ball tooth hard alloy drill, cause brokenly rock effectively, row's powder is timely, repeat broken lacking, steering resistance is little, and pure drilling speed can improve more than 10%, need not go up pricker, unload pricker, thereby can improve the construction condition of labor, can reduce unproductive time simultaneously, industrial drilling speed can improve 30～40%.In addition, also can save raw material, reduce the drilling tool cost.
A series of ball profile of tooth cemented tungsten carbide integral drill rod of the present invention; the body of rod and life-span of forecone mate substantially; applicable to hard, in creep in the hard and soft stratum; at uniaxial compressive strength is in the middle coarse-grained granite of 1000-1400 Kilogram Force Per Square Centimeter; the five ball tooth cemented tungsten carbide integral drill rods that diameter is 40 millimeters YTP-26 type air drill perforating; on average not grinding the life-span can reach 200～250 meters, generally can also reface and use.Owing to adopt " sinking to the bottom the formula induction brazing " craft of consolidating teeth permanent tooth, and the corresponding geometrical structure parameter of cone head, a series of ball profile of tooth cemented tungsten carbide integral drill rod of the present invention is applicable to light medium-sized hydraulic pressure, pneumatic, electronic and diesel rock frill, can Drilling different eyelets in 30～50 millimeters of the diameters, particularly can the small perforations of the inefficient diameter of Drilling ball profile of tooth hard alloy drill below 38 millimeters.
In sum, the present invention will provide a kind of more satisfactory drilling tool for the drilling engineering construction, can speed up the work, and reduce construction costs.
Description of drawings:
1, ball profile of tooth carbide alloy
2, forecone
3, circular platform
4, the end conical surface
5, front weep hole
6, side weep hole
7, powder exhaust groove
8, transition region
9, the body of rod
10, auxiliary powder exhaust groove
11, sword face
12, strip platform
With five ball tooth cemented tungsten carbide integral drill rods is example, it is characterized in that constituting by the body of rod 9 and forecone 2 two parts, the body of rod 9 adopts alloy hexagonal cored steel, forecone 2 is taked forging-machine moulding, there is a conical surface cone 2 ends, one circular platform 3 is arranged on the conical surface 4, solder sphere profile of tooth carbide alloy 1 on the conical surface 4 and circular platform 3, the ball profile of tooth carbide alloy 1 that is welded on the conical surface 4 is heel teeth, the heel teeth inclination angle is 12 °～30 °, ball profile of tooth carbide alloy 1 such as is at strong tooth, the hemisphere tooth, total tooth depth is 14～17 millimeters, high grinningly is 4～5.5 millimeters, tooth directly is 8～12 millimeters of φ, maximum tooth is apart from being less than or equal to 19 millimeters, a front weep hole 5 is arranged on circular platform 3, the invaginating powder exhaust groove 7 that two symmetrical distributions are arranged in cone 2 sides, a side weep hole 6 is respectively arranged in the powder exhaust groove 7, the auxiliary powder exhaust groove 10 that also has two symmetrical distributions in addition, cone 2 head clearance angles are 2 °～3 °, cone 2 head diameters can be made φ 40,42 millimeters, transition region 8 between the body of rod 9 and the forecone 2 is the serpentine circular arc, tangent two arc radius the best is the R=50 millimeter, hammer drill length is 400～4800 millimeters, bit shank is of a size of B22 * 108, B25 * 108, B25 * 159, B25 and B32(are light), B32 left hand thread, the body of rod 9 hardness are HRC30～40, bit shank hardness is HRC49～55, screw thread bit shank heat treatment rear surface hardness is HRC52～58, and centre hardness is HRC44～50, and other requirement should meet YB2003-78, the regulation of YB2004-78, ball profile of tooth carbide alloy 1 are taked " sinking to the bottom the formula induction brazing " craft of consolidating teeth permanent tooth.
Claims (13)
1, a kind of ball profile of tooth cemented tungsten carbide integral drill rod, mainly constitute by the hammer drill body of rod 9 and forecone 2 two parts, the body of rod 9 adopts alloy hexagonal cored steel, forecone 2 adopts forging-machine moulding, there is a conical surface 4 forecone 2 ends, the vertical conical surface 4 is furnished with ball profile of tooth carbide alloy 1, ball profile of tooth carbide alloy 1 is the hemisphere tooth, the forecone diameter is 30～45 millimeters of φ, and there are invaginating ditch (powder exhaust groove) 7 and weep hole 6 in the side, and the transition region 8 between the body of rod 9 and the forecone 2 is the serpentine circular arc, it is characterized in that, ball profile of tooth carbide alloy 1 total tooth depth is 14～17 millimeters, and high grinningly is 4～5.5 millimeters, and tooth directly is 8～12 millimeters of φ, the heel teeth inclination angle is 12 °～30 °, maximum tooth is apart from being less than or equal to 20 millimeters, and the head clearance angle is 2 °～3 °, and forecone 2 diameters can also be accomplished 50 millimeters of φ.
2, according to the described ball profile of tooth of claim 1 cemented tungsten carbide integral drill rod, it is characterized in that being furnished with on the conical surface 4 three ball profile of tooth carbide alloy 1, also have a front weep hole 5 in addition, there are three invaginating powder exhaust grooves 7 cone 2 sides, wherein in two powder exhaust grooves 7 a side weep hole 6 are arranged respectively.
3, according to the described ball profile of tooth of claim 1 cemented tungsten carbide integral drill rod, it is characterized in that cone end also has the one group of sword face 11 and the conical surface tangent, form a strip platform 12 at the cone top, on strip platform 12, be furnished with three ball profile of tooth carbide alloy 1, an invaginating powder exhaust groove 7 is respectively arranged in sword face 11, a side weep hole 6 is respectively arranged in the powder exhaust groove 7.
4, according to the described ball profile of tooth of claim 1 cemented tungsten carbide integral drill rod, it is characterized in that the conical surface 4 ends also have a platform 3, be furnished with ball profile of tooth carbide alloy 1 on the vertical platform 3 and be middle tooth, be furnished with ball profile of tooth carbide alloy 1 on the vertical conical surface 4 and be heel teeth.
5, according to the described ball profile of tooth of claim 4 cemented tungsten carbide integral drill rod, it is characterized in that middle part and limit portion ball profile of tooth carbide alloy 1 add up to four, there are three invaginating powder exhaust grooves 7 the cone side, and a side weep hole 6 is respectively arranged in the powder exhaust groove 7.
6,, it is characterized in that also having a front weep hole 5 on the platform 3 according to the described ball profile of tooth of claim 5 cemented tungsten carbide integral drill rod.
7, according to the described ball profile of tooth of claim 4 cemented tungsten carbide integral drill rod, it is characterized in that a front weep hole 5 is arranged on the platform 3, there is invaginating (master) powder exhaust groove 7 of two symmetrical distributions the cone side, also have the auxiliary powder exhaust groove 10 of two symmetrical distributions in addition, a side weep hole 6 is respectively arranged in main powder exhaust groove 7.
8,, it is characterized in that middle part and limit portion ball profile of tooth carbide alloy 1 add up to five according to the described ball profile of tooth of claim 7 cemented tungsten carbide integral drill rod.
9, according to the described ball profile of tooth of claim 7 cemented tungsten carbide integral drill rod, it is characterized in that increasing again on the platform 3 a front weep hole 5, middle part and limit portion ball profile of tooth carbide alloy add up to six.
10,, it is characterized in that middle part and limit portion ball profile of tooth carbide alloy 1 add up to seven according to the described ball profile of tooth of claim 7 cemented tungsten carbide integral drill rod.
11,, it is characterized in that middle part and limit portion ball profile of tooth carbide alloy 1 add up to eight according to the described ball profile of tooth of claim 7 cemented tungsten carbide integral drill rod.
12, according to the described ball profile of tooth of claim 4 cemented tungsten carbide integral drill rod, it is characterized in that there are two invaginating powder exhaust grooves 7 the cone side, wherein in a powder exhaust groove 7 a side weep hole 6 is arranged, a front weep hole 5 is arranged on the platform 3, middle part and limit portion ball profile of tooth carbide alloy 1 add up to nine.
13, according to each described ball profile of tooth cemented tungsten carbide integral drill rod in the claim 1～12, it is characterized in that ball profile of tooth carbide alloy 1 strong tooth (bullet tooth) such as can also make, hammer drill length is 400～4800 millimeters, bit shank is of a size of B19 * 108, B25 * 108, B25 * 159, B25, B32(is light), B32 left hand thread, pricker body hardness is HRC30～40, bit shank hardness is HRC49～55, and it is HRC52～58 that the screw thread bit shank is handled rear surface hardness, and centre hardness is HRC44～50, other technical requirements should meet YB2003～78, the regulation of YB2004～78, ball profile of tooth carbide alloy 1 permanent tooth adopts " sinking to the bottom the formula induction brazing " craft of consolidating teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85102269A CN85102269B (en) | 1985-04-01 | 1985-04-01 | Spherical tooth type series small diameter hard alloy integral drill rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85102269A CN85102269B (en) | 1985-04-01 | 1985-04-01 | Spherical tooth type series small diameter hard alloy integral drill rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85102269A CN85102269A (en) | 1986-07-02 |
| CN85102269B true CN85102269B (en) | 1987-07-29 |
Family
ID=4792383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN85102269A Expired CN85102269B (en) | 1985-04-01 | 1985-04-01 | Spherical tooth type series small diameter hard alloy integral drill rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85102269B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2005202371B2 (en) * | 2005-05-31 | 2010-09-23 | Sandvik Intellectual Property Ab | Method for manufacturing a cutting pick |
-
1985
- 1985-04-01 CN CN85102269A patent/CN85102269B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN85102269A (en) | 1986-07-02 |
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