CN101382072B - Diamond cast-in pick and making process thereof - Google Patents
Diamond cast-in pick and making process thereof Download PDFInfo
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- CN101382072B CN101382072B CN2008102305973A CN200810230597A CN101382072B CN 101382072 B CN101382072 B CN 101382072B CN 2008102305973 A CN2008102305973 A CN 2008102305973A CN 200810230597 A CN200810230597 A CN 200810230597A CN 101382072 B CN101382072 B CN 101382072B
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Abstract
The invention discloses a diamond-impregnated cutting pick, which comprises a pick handle and a pick head, wherein the function end of the pick handle is provided with an impregnating concave pit and an impregnating groove, the impregnating concave pit is arranged on the end surface of the function end of the pick handle and at the axis position of the pick handle, and the impregnating groove is arranged on the side of the function end of the pick handle and is evenly radialized taking the position of the impregnating concave pit as the center, and the impregnating groove is a strip-shaped groove or a fan-shaped groove, the number of which is at least two, one part of the pick head is embedded in the impregnating concave pit, and the other part extrudes the pick handle body; and the pick head is made of one or two kinds of material of diamond mixed material and tungsten carbide; the inside of the impregnating groove is embedded with a fin, and the shape and the size of the fin are uniform with those of the impregnating groove, and the fin is made with one of the following materials: diamond mixed material, cubic boron nitride, tungsten carbide or hard metal material. The cutting pick improves the anti-impact strength and abrasion resistance performance and therefore improve the working efficiency and the service life of mechanical equipment.
Description
Technical field
The present invention relates to be used for engineering drilling machineries such as mining, constructing tunnel or extractive equipment field and especially relate to a kind of diamond cast-in pick and manufacture craft thereof that is used for boring mechanic or extractive equipment.
Background technology
In the prior art, pick is the key element on the engineering machinery such as large-scale digger, development machine, Spiral digging machine, milling machine, shield machine, be mainly used in the engineering mechanical device and the boring mechanic apparatus field such as digging, colliery, mining equipment, all kinds of tunnel and highway such as coal mining, tunnelling in coalfield, along with the demand of resource and social development increases day by day, the use of large-scale mining machinery more and more widely, thereby to the demands for higher performance of pick.
Not high enough by the carbide alloy pick hardness that existing production technology is produced, pick handle material quick abrasion, thus make too early the coming off of carbide alloy cutting pick head of being fixed in pick pommel portion, cause whole pick to damage inefficacy in advance.Like this,, directly cause whole mining equipment cost to improve, because frequent replacing pick makes the efficient of mining equipment not give full play to, resources such as manpower, steel are caused waste on the other hand on the one hand because the pick bulk life time is too short.In order to address this problem, main traditionally employing is heat-treated the pick handle or is increased its abrasion resistance at pick handle surface overlaying one deck wear resistance electrode, protects the footpath purpose to reach the tooth handle, but effect and not obvious.Though and the diamond composite teeth head has higher hardness and anti-wear performance, shock resistance is poor, often causes improper the coming off of diamond working layers of diamond composite cutter bit, thereby makes the improper rising of cost of production; For example, application number is that 200810030935.9 Chinese patent discloses a kind of diamond composite cutter bit head, cutting pick head is that the end surface at hard alloy substrate has one deck dimond synneusis layer, although improved the anti-wear performance of pick, but because the working environment complexity of pick, cutting pick head is under situation about constantly being subjected to than strong impact force, and dimond synneusis layer ratio is easier to damage and comes off, thereby the normal work of influence, the improper rising that brings cost of production.
Summary of the invention
In view of this, the objective of the invention is to overcome the defective of prior art, a kind of diamond cast-in pick is provided, improve integral hardness, particularly impact strength and the anti-wear performance of pick, and then improve the operating efficiency and the application life of plant equipment.
For achieving the above object, the present invention by the following technical solutions:
Diamond cast-in pick of the present invention comprises tooth handle and tooth head, one end of tooth handle is a bare terminal end, bare terminal end is used for connecting with equipment, the other end of tooth handle is the function end, the tooth head is arranged on the function end, at described tooth handle function end impregnated pit and impregnated groove are set, impregnated pit is positioned on the end face of tooth handle function end and is positioned at the axial location of tooth handle, impregnated groove is positioned on the side of tooth handle function end and is that the center radial evenly distributes with the position of impregnated pit, impregnated groove is strip slot or fan-shaped groove, and the quantity of impregnated groove is two or more; The first part of described tooth is embedded in the impregnated pit, another part projecting teeth handle body; Described tooth head is made by a kind of or two kinds of materials in diamond batch mixing, cubic boron nitride and the tungsten carbide; All be inlaid with fin in the described impregnated groove, the shape and size of described fin are consistent with the shape and size of impregnated groove, shape and size described here are consistent to be meant: promptly strip slot is embedded in the identical strip fin of shape, the fan-shaped groove is embedded in the identical fan-shaped fin of shape, fin and to embed impregnated groove very close to each other or the gap is very little between the latter two, be that the two is in conjunction with tight, the thickness of fin and the degree of depth of impregnated groove can be slightly variant, and promptly the lateral surface of fin can be higher than, is lower than or puts down in the lateral surface of tooth handle body; Described fin is by a kind of the making in diamond batch mixing, cubic boron nitride, tungsten carbide or the Hardmetal materials.
Further, the degree of depth of described impregnated groove is 0.1mm at least; Impregnated pit is a cylindrical shape, the part of tooth head projecting teeth handle body be hemispherical, segment shape or coniform in a kind of shape.
Further, the component of described diamond batch mixing is: the weight ratio of diamond and other batch mixing is 2:3, and wherein other batch mixing comprises tungsten carbide 15%, titanium carbide 45%, copper 33%, cobalt 5% and silver 2% by weight percentage.
Another object of the present invention is to provide a kind of manufacture craft of described diamond cast-in pick, may further comprise the steps:
A. process tooth handle main body;
B. process impregnated pit and impregnated groove
Process described impregnated pit and impregnated groove at tooth handle function end, impregnated pit is positioned on the end face of tooth handle function end and is positioned at the axial location of tooth handle, impregnated groove is strip slot or fan-shaped groove and is that the center radial evenly distributes with the position of impregnated pit, with acetone or alcohol described tooth handle function end is cleaned then, then dry;
C. make carbon pipe and carbon core mold
Make the carbon pipe according to shape through the tooth handle function end of the tooth handle main body after the processing of a step, the shape of this carbon tube cavity one end with process through a step after the shape of tooth handle function end of tooth handle main body consistent; The other end shape of this carbon tube cavity is consistent with the outer shape of carbon core, inserts the carbon pipe to make things convenient for the carbon core; Carbon core one end is provided with carbon core pit, and the shape and size of this carbon core pit are made according to tooth head shapes to be processed, and the shape and size of carbon core pit are consistent with the shape and size of described tooth head projecting teeth handle body part; Carbon pipe and the carbon core mold made are also dried with acetone or alcohol wash;
D. hot pressing tooth head and fin
One end of the carbon pipe that the c step is made is sleeved on the function end of the tooth handle that the b step makes, tungsten-carbide powder or diamond batch mixing are imported the carbon pipe to fill impregnated pit and impregnated groove, after treating that impregnated pit and impregnated groove fill up, according to the size continuation importing diamond batch mixing of tooth head projecting teeth handle body part to be processed; Then, an end that the carbon core is had carbon core pit inserts the carbon pipe, and to tooth handle direction the carbon core is slightly exerted pressure, connect power supply and tungsten-carbide powder or diamond batch mixing are heated to 700～1350 degrees centigrade make tungsten-carbide powder or the complete fusion of diamond batch mixing, deenergization then;
E. insulation
The pick that the d step is machined was put in the incubator insulation 6 hours, and temperature is 200～400 degrees centigrade;
F. operation after
Pick after the insulation of e step is carried out solder flux removing, finishing and polishing.
Another purpose of the present invention is to provide the another kind of manufacture craft of described diamond cast-in pick, may further comprise the steps:
A. process tooth handle main body;
B. process impregnated pit
Process described impregnated pit at tooth handle function end, impregnated pit is positioned on the end face of tooth handle function end and is positioned at the axial location of tooth handle, with acetone or alcohol described tooth handle function end is cleaned then, then dries;
C. make carbon pipe and carbon core mold
Make the carbon pipe according to shape through the tooth handle function end of the tooth handle main body after the processing of a step, the shape of this carbon tube cavity one end with process through a step after the shape of tooth handle function end of tooth handle main body consistent; The other end shape of this carbon tube cavity is consistent with the outer shape of carbon core, inserts the carbon pipe to make things convenient for the carbon core; Carbon core one end is provided with carbon core pit, and the shape and size of this carbon core pit are made according to tooth head shapes to be processed, and the shape and size of carbon core pit are consistent with the shape and size of described tooth head projecting teeth handle body part; Carbon pipe and the carbon core mold made are also dried with acetone or alcohol wash;
D. hot pressing tooth head
One end of the carbon pipe that the c step is made is sleeved on the function end of the tooth handle that the b step makes, tungsten-carbide powder or diamond batch mixing are imported the carbon pipe to fill impregnated pit, after treating that impregnated pit fills up, according to the size continuation importing diamond batch mixing of tooth head projecting teeth handle body part to be processed; Then, an end that the carbon core is had carbon core pit inserts the carbon pipe, and to tooth handle direction the carbon core is slightly exerted pressure, connect power supply and tungsten-carbide powder or diamond batch mixing are heated to 700 ℃～1350 ℃ make tungsten-carbide powder or the complete fusion of diamond batch mixing, deenergization then;
E. insulation
The pick semiproduct that the d step is machined were put in the incubator insulation 6 hours, and temperature is 200～400 degrees centigrade;
F. process impregnated groove
On the pick semiproduct of e step insulation, process described impregnated groove, impregnated groove is strip slot or fan-shaped groove and is that the center radial evenly distributes with the position of impregnated pit, with acetone or alcohol described tooth handle function end is cleaned then, then dries;
G. make fin
The shape and size of the impregnated groove of being processed according to the f step are made fin, and this fin adopts the mode of hot pressing to make by a kind of the making in diamond batch mixing, cubic boron nitride, tungsten carbide or the Hardmetal materials when adopting diamond batch mixing or tungsten carbide;
H. weld fin
Adopt the mode of copper brazing or silver brazing to be fixed in the corresponding impregnated groove ready fin in the g step;
I. insulation again
To put in the incubator insulation 6 hours through the pick that the h step welds fin, temperature is 200～400 degrees centigrade;
J. operation after
To carrying out solder flux removing, finishing and polishing through the pick after the insulation of i step.
A further object of the present invention is to provide the another kind of manufacture craft of described diamond cast-in pick, may further comprise the steps:
A. process tooth handle main body;
B. process impregnated pit and impregnated groove
Process described impregnated pit and impregnated groove at tooth handle function end, impregnated pit is positioned on the end face of tooth handle function end and is positioned at the axial location of tooth handle, impregnated groove is strip slot or fan-shaped groove and is that the center radial evenly distributes with the position of impregnated pit, with acetone or alcohol described tooth handle function end is cleaned then, then dry;
C. make fin and tooth head
The impregnated groove of being processed according to the b step and the shape and size of impregnated pit are made fin and tooth head; Described fin adopts the mode of hot pressing to make by a kind of the making in diamond batch mixing, cubic boron nitride, tungsten carbide or the Hardmetal materials when adopting diamond batch mixing, cubic boron nitride or tungsten carbide to make fin; Described tooth head is made by a kind of or two kinds of material hot pressing in diamond batch mixing and the tungsten carbide;
D. weld fin and tooth head
Adopt the mode of copper brazing or silver brazing to be fixed in the corresponding impregnated groove ready fin in the c step; Adopt the mode of copper brazing or silver brazing to be fixed in the corresponding impregnated pit on ready tooth head in the c step;
E. insulation
To put in the incubator insulation 6 hours through the pick that the d step welds fin, temperature is 200～400 degrees centigrade;
F. operation after
To carrying out solder flux removing, finishing and polishing through the pick after the insulation of e step.
Beneficial effect of the present invention is as follows:
The present invention changed fully pick function end superhard material workpiece material and with the combination of pick tooth handle body.The present invention has changed the material of traditional pick tooth head fully, with wherein a kind of of diamond, cubic boron nitride or tungsten carbide or two kinds of materials is that main component is made superhard material tooth head, with the impregnated end face to tooth handle function end of this superhard material tooth head to replace hard-metal insert head or the diamond composite cutter bit head that has pick now; The present invention also inlays two or more fin simultaneously in the impregnated groove of the side of tooth handle function end, fin is to be that the center is to extraradial strip or fan-shaped superhard material sheet with the tooth head, fin can be for the first time hot-forming with tooth, also can be behind the good tooth head of hot pressing the fin of geomery unanimity be solded in the impregnated groove again.Incubation step in the making step is in order to eliminate the stress in the pick.The present invention adopt with diamond, tungsten carbide be main component etc. superhard material behind suitable temperature sintering, have crystal grain and be the lack of alignment state, thereby hardness evenly and is not had a directionality; Have higher hardness, particularly impact strength and abrasion resistance are good.The present invention adopts suitable material raw material to make and the inserted tooth head, adopt suitable material raw material to make the also fin of inserted tooth head specific modality simultaneously, the impact resistance and the anti-wear performance of pick function end have been improved, thereby improved the application life of pick, be 15 to 60 times of the carbide alloy cutting-gear life produced of traditional handicraft the application life of adopting the diamond cast-in pick that the present invention produces, even more.From the social benefit angle, the pick that prolongs greatly application life has reduced the replacing frequency of pick, not only can save the steel product cost of making pick, relevant logistics cost greatly, and save the machining cost of pick, reduce the consumption of electric power resource; On service efficiency, the prolongation in application life can significantly reduce because of changing the man-hour that pick causes and the waste of manpower, increased the effective time relatively, improved operating efficiency, made a whole set of plant equipment performance that adopts pick of the present invention perform to relatively more perfect optimum level of present stage.Other advantages of the present invention, target and feature will be set forth to a certain extent in the following description, and to a certain extent, based on being conspicuous to those skilled in the art, perhaps can obtain instruction from the practice of the present invention to investigating hereinafter.Target of the present invention and other advantages can realize and obtain by specifically noted structure in manual, claims or the accompanying drawing.
Description of drawings
Fig. 1 is the front view of embodiment one described pick.
Fig. 2 is the left view of pick shown in Figure 1.
Fig. 3 is an A-A sectional drawing among Fig. 2.
Fig. 4 mould when making the described pick of embodiment 1 assembles schematic diagram with denticle.
Fig. 5 is the front view of embodiment two described picks.
Fig. 6 is the left view of the described pick of Fig. 5.
Fig. 7 is a B-B sectional drawing among Fig. 6.
Fig. 8 is the front view of embodiment three described picks.
Fig. 9 is the left view of the described pick of Fig. 8.
Figure 10 is a C-C sectional drawing among Fig. 9.
Figure 11 mould when making the described pick of embodiment three assembles schematic diagram with denticle.
Figure 12 is the front view of embodiment four described picks.
Figure 13 is the left view of Figure 12.
Figure 14 is a D-D sectional drawing among Figure 13
The specific embodiment
Below in conjunction with drawings and Examples the present invention is further described.
Embodiment one,
As Fig. 1, Fig. 2 and shown in Figure 3, the diamond cast-in pick of present embodiment comprises tooth handle 1 and tooth head 2, and the left end of tooth handle 1 is a bare terminal end, be used for during use connecting with engineering equipment, the right-hand member of tooth handle 1 is the function end, and tooth head 2 is arranged on the function end, in order to the impact and the friction of bearing work plane.The function end of tooth handle 1 is provided with impregnated pit and impregnated groove.Described impregnated pit is positioned on the end face of tooth handle function end and is positioned at the axial location of tooth handle, impregnated pit is a cylindrical shape, one end of tooth head 2 closely is embedded in the impregnated pit, the other end exposes the body of tooth handle 1, the part that tooth head 2 exposes the body of tooth handle 1 is the segment shape, clearly also can be hemispherical, coniform or other shape.Described impregnated groove is positioned on the side of tooth handle function end and is that the center radial evenly distributes with the position of impregnated pit, and impregnated groove is a strip slot in the present embodiment, and its quantity is 4.Closely inlay fin 3 respectively in described 4 impregnated grooves, fin 3 and tooth head 2 are once hot-forming and be connected as a single entity when making in the present embodiment; The shape and size of fin 3 are identical with the shape and size of impregnated groove in the present embodiment, be that strip slot is embedded in the identical strip fin 3 of shape and size, fin 3 and to embed impregnated groove very close to each other or the gap is very little between the latter two, promptly the two is in conjunction with very tight.During actual fabrication, the thickness of fin 3 and the degree of depth of impregnated groove can be slightly variant, and promptly the lateral surface of fin 3 can be higher than, is lower than or puts down in the lateral surface of the body of tooth handle 1; The degree of depth of the thickness of fin 3 and impregnated groove is identical in the present embodiment, all is 0.1mm at least, and present embodiment is 4mm, and like this, the lateral surface of the fin 3 just lateral surface of the body of tooth handle 1 is concordant mutually.Tooth head 2 is formed by the hot pressing of diamond batch mixing in the present embodiment; Certainly save the higher diamond batch mixing of cost for reducing cost, tooth head 2 can adopt the cubic boron nitride that is more or less the same with diamond hardness and the batch mixing of tungsten carbide to replace the diamond batch mixing; Also can adopt another reasonable way, promptly in manufacturing process, before hot-forming, in pit, insert earlier a certain amount of tungsten carbide (also can mix a spot of titanium or cobalt in the tungsten carbide), and then adding diamond batch mixing, after hot-forming like this, the main component of the part of projecting teeth handle 1 body of tooth head 2 is diamond, still can reach purpose of the present invention under the cost-effective so again situation.Fin 3 is formed by the hot pressing of tungsten carbide raw material in the present embodiment, mixes the cobalt (percentage by weight) of 2-8% in the tungsten carbide raw material, and apparent, fin 3 also can be formed by the hot pressing of diamond batch mixing.Among the present invention, difference according to the granule size of the height difference of the hardness of rock, rock, the proportioning of described diamond batch mixing is also different, the weight ratio of diamond and other batch mixing is 2:3 in the present embodiment, and wherein other batch mixing comprises tungsten carbide 15%, titanium carbide 45%, copper 33%, cobalt 5% and silver 2% by weight percentage.The diamond cast-in pick of present embodiment can reach more than 30 times of pick application life of ordinary rigid carbide button head application life.Through on probation and follow-up study repeatedly, adopt the different tooth head diamond cast-in pick of the present invention of diamond batch mixing proportioning all can reach more than 15～60 times of pick application life of ordinary rigid carbide button head application life.
Introduce the manufacture craft of the pick of present embodiment below in conjunction with Fig. 1, Fig. 2, Fig. 3 and Fig. 4, this technology comprises the steps:
A. process the main part of tooth handle 1;
B. process impregnated pit and impregnated groove
Process described impregnated pit and impregnated groove at the function end of tooth handle 1 on request, impregnated pit is positioned on the end face of tooth handle function end and is positioned at the axial location of tooth handle, impregnated groove is strip slot and is that the center radial evenly distributes with the position of impregnated pit, clean with acetone or alcohol function end then, then dry described tooth handle 1;
C. make carbon pipe 4 and carbon core 5
Carbon pipe 4 and carbon core 5 are graphite jig.Shape according to the function end that passes through 1 tooth handle 1 after a step is processed is made carbon pipe 4.As shown in Figure 4, the shape of the inner chamber of this carbon pipe 4 left side section is consistent with the shape and size of the function end of the tooth handle 1 after the processing of a step, carries out hot pressing tooth head 2 and fin 3 so that carbon pipe 4 is inserted in the function end of tooth handle 1; The right section shape of carbon pipe 4 inner chambers is consistent with the outer shape of carbon core 5, inserts carbon pipe 4 to make things convenient for carbon core 5; Carbon core 5 is a solid cylinder, the left end of carbon core 5 is provided with carbon core pit, the shape and size of this carbon core pit are made according to tooth head shapes to be processed, because to expose the part of the body of tooth handle 1 be the segment shape to tooth head 2 in the present embodiment, thus in the present embodiment carbon core pit also for ball-cut shape with the hot-forming shape that goes out the tooth head 2 of correspondence; With carbon pipe 4 and carbon core 5 usefulness acetone or alcohol wash and the oven dry of making; When carbon pipe 4 in this step and 5 Mold Makings of carbon core, spot-like projections or point-like pit are set at the inner chamber of carbon pipe 4 and the surface of carbon core pit
D. hot pressing tooth head 2 and fin 3
As shown in Figure 4, one end of the carbon pipe 4 that the c step is made is sleeved on the function end of the tooth handle 1 that the b step makes, mix the diamond batch mixing in proportion, then the diamond batch mixing is imported the inner chamber of carbon pipe 4 to fill impregnated pit and impregnated groove, after treating that impregnated pit and impregnated groove fill up, continue to import a certain amount of diamond batch mixing according to the size of the body part of tooth head 2 projecting teeth handles 1 to be processed; Then, the inner chamber that carbon core 5 is had the end insertion carbon pipe 4 of carbon core pit, adopt laser welder, high-frequency induction welder or intermediate frequency welding machine are heated to about 700～1350 degrees centigrade, make tungsten-carbide powder, cubic boron nitride or the complete fusion of diamond batch mixing, deenergization then, applies suitable pressure to carbon core 5 along the axis direction of tooth handle 1 therebetween from right to left.
E. insulation
The pick that the d step is machined was put in the incubator insulation 6 hours, and temperature is 200～400 degrees centigrade; Incubation step helps to eliminate stress.
F. operation after
Pick after the insulation of e step is carried out solder flux removing, finishing and polishing.
Embodiment two,
The diamond cast-in pick of present embodiment is similar to the diamond cutting pick head of embodiment one, but an important difference is arranged, be that impregnated groove among the embodiment one and corresponding fin are strips, and impregnated groove in the present embodiment and corresponding fin are fan-shapeds, the following specifically describes its performance.
As Fig. 5, Fig. 6 and shown in Figure 7, the diamond cast-in pick of present embodiment comprises tooth handle 6 and tooth head 7, and the left end of tooth handle 6 is a bare terminal end, be used for during use connecting with engineering equipment, the right-hand member of tooth handle 6 is the function end, and tooth head 7 is arranged on the function end, in order to the impact and the friction of bearing work plane.The function end of tooth handle 6 is provided with impregnated pit and impregnated groove.Described impregnated pit is positioned on the end face of tooth handle function end and is positioned at the axial location of tooth handle, impregnated pit is a cylindrical shape, one end of tooth head 7 closely is embedded in the impregnated pit, the other end exposes the body of tooth handle 6, the part that tooth head 7 exposes the body of tooth handle 6 is the segment shape, clearly also can be hemispherical, coniform or other shape.Described impregnated groove is positioned on the side of tooth handle function end and is that the center radial evenly distributes with the position of impregnated pit, and impregnated groove is the fan-shaped groove in the present embodiment, and its quantity is at least two, and present embodiment is 4.Closely inlay fin 8 respectively in described 4 impregnated grooves, fin 8 and tooth head 7 are once hot-forming and be connected as a single entity when making in the present embodiment; The shape and size of fin 8 are identical with the shape and size of impregnated groove in the present embodiment, be that the fan-shaped groove is embedded in the identical fan-shaped fin 8 of shape and size, fin 8 and to embed impregnated groove very close to each other or the gap is very little between the latter two, promptly the two is in conjunction with very tight.During actual fabrication, the thickness of fin 8 and the degree of depth of impregnated groove can be slightly variant, and promptly the lateral surface of fin 8 can be higher than, is lower than or puts down in the lateral surface of the body of tooth handle 6; The degree of depth of the thickness of fin 8 and impregnated groove is identical in the present embodiment, all is 0.1mm at least, and present embodiment is 4mm, and like this, the lateral surface of the fin 8 just lateral surface of the body of tooth handle 6 is concordant mutually.Tooth head 7 is formed by the hot pressing of diamond batch mixing in the present embodiment; Certainly save the higher diamond batch mixing of cost for reducing cost, tooth head 7 can adopt the cubic boron nitride that is more or less the same with diamond hardness and the batch mixing of tungsten carbide to replace the diamond batch mixing; Also can adopt another reasonable way, promptly in manufacturing process, before hot-forming, in pit, insert earlier a certain amount of tungsten carbide (also can mix a spot of copper, titanium or cobalt in the tungsten carbide), and then adding diamond batch mixing, after hot-forming like this, the main component of the part of projecting teeth handle 6 bodies of tooth head 7 is diamond, still can reach purpose of the present invention under the cost-effective so again situation.Fin 8 is formed by the hot pressing of tungsten carbide raw material in the present embodiment, mixes the cobalt (percentage by weight) of 2-8% in the tungsten carbide raw material, and apparent, fin 8 also can be formed by the hot pressing of diamond batch mixing.The component of above-mentioned diamond batch mixing is with embodiment 1 in the present embodiment.Through on probation and follow-up study repeatedly, the diamond cast-in pick of present embodiment can reach more than 15～60 times of pick application life of ordinary rigid carbide button head application life.
The diamond cast-in pick of present embodiment is identical with the pick manufacture craft of embodiment one, and just, if when employed diamond batch mixing or tungsten carbide raw material slightly change, the time that heat-press step need be energized to the material fusion is difference to some extent.
Embodiment three,
As Fig. 8, Fig. 9 and shown in Figure 10, the diamond cast-in pick of present embodiment comprises tooth handle 9 and tooth head 10, and the left end of tooth handle 9 is a bare terminal end, be used for during use connecting with engineering equipment, the right-hand member of tooth handle 9 is the function end, and tooth head 10 is arranged on the function end, in order to the impact and the friction of bearing work plane.The function end of tooth handle 9 is provided with impregnated pit and impregnated groove.Described impregnated pit is positioned on the end face of tooth handle function end and is positioned at the axial location of tooth handle, impregnated pit is a cylindrical shape, one end of tooth head 10 closely is embedded in the impregnated pit, the other end exposes the body of tooth handle 9, the part that tooth head 10 exposes the body of tooth handle 9 is the segment shape, clearly also can be hemispherical, coniform or other shape.Described impregnated groove is positioned on the side of tooth handle function end and is that the center radial evenly distributes with the position of impregnated pit, and impregnated groove is a strip slot in the present embodiment, and its quantity is at least two, and present embodiment is 4.Closely inlay fin 11 respectively in described 4 impregnated grooves; The shape and size of fin 11 are identical with the shape and size of impregnated groove in the present embodiment, and promptly strip slot is embedded in the identical strip fin 11 of shape and size, fin 11 and embed impregnated groove between the latter two the gap very little, in conjunction with closely.During actual fabrication, the thickness of fin 11 and the degree of depth of impregnated groove can be slightly variant, and promptly the lateral surface of fin 11 can be higher than, is lower than or puts down in the lateral surface of the body of tooth handle 9; The degree of depth of the thickness of fin 11 and impregnated groove is identical in the present embodiment, all is 0.1mm at least, and present embodiment is 4mm, and like this, the lateral surface of the fin 11 just lateral surface of the body of tooth handle 9 is concordant mutually.Tooth head 10 is formed by the hot pressing of diamond batch mixing in the present embodiment; Certainly save the higher diamond batch mixing of cost for reducing cost, tooth head 10 can adopt the cubic boron nitride that is more or less the same with diamond hardness and the batch mixing of tungsten carbide to replace the diamond batch mixing; Also can adopt another reasonable way, promptly in manufacturing process, before hot-forming, in pit, insert earlier a certain amount of cubic boron nitride or tungsten carbide (also can mix a spot of titanium or cobalt in the tungsten carbide), and then adding diamond batch mixing, after hot-forming like this, the main component of the part of projecting teeth handle 9 bodies of tooth head 10 is diamond, still can reach purpose of the present invention under the cost-effective so again situation.Fin 11 is formed by the independent hot pressing of tungsten carbide raw material in the present embodiment, is welded to then in the impregnated groove, and tungsten carbide mixes the titanium (percentage by weight) of 2-6% to increase abrasion resistance when using, and apparent, fin 11 also can be formed by the hot pressing of diamond batch mixing.The component of above-mentioned diamond batch mixing is with embodiment 1 in the present embodiment.Through on probation and follow-up study repeatedly, the diamond cast-in pick of present embodiment can reach more than 15～60 times of pick application life of ordinary rigid carbide button head application life.
Introduce the manufacture craft of the pick of present embodiment below in conjunction with Fig. 8, Fig. 9, Figure 10 and Figure 11, this technology comprises the steps
A. process the main body of tooth handle 9
Producing a step surface 14 near on the side on function end top;
B. process impregnated pit
Process described impregnated pit at the function end of tooth handle 9, impregnated pit is positioned on the end face of function end of tooth handle 9 and is positioned at the axial location of tooth handle, with acetone or alcohol described tooth handle function end is cleaned then, then dries;
C. make carbon pipe 12 and carbon core 13
D. hot pressing tooth head
One end of the carbon pipe 12 that the c step is made is sleeved on the function end of the tooth handle that the b step makes, the left surface of carbon pipe 12 withstands on the terrace 14 of platform tooth handle 9, the diamond batch mixing is imported the carbon pipe to fill impregnated pit, after treating that impregnated pit fills up, size according to tooth head projecting teeth handle body part to be processed continues to import the diamond batch mixing, for saving cost, the diamond batch mixing in the impregnated pit can be used the tungsten carbide raw material substitution, and the tungsten carbide raw material can mix little cobalt or titanium when using; Then, the left end that carbon core 13 is had carbon core pit inserts carbon pipe 12, and carbon core 13 is slightly exerted pressure to tooth handle direction, adopt high-frequency induction welder or intermediate frequency welding machine, after the energising, the diamond batch mixing is heated under the effect of high frequency electric, when being heated to 700～1350 ℃, the complete fusion of diamond batch mixing, deenergization then; After solidifying, the diamond batch mixing for the treatment of fusion promptly gets the semiproduct of pick;
E. insulation
The pick semiproduct that the d step is machined were put in the incubator insulation 6 hours, and temperature is about 380 degrees centigrade;
F. process impregnated groove
On the pick semiproduct of e step insulation, milling out described impregnated groove, impregnated groove is positioned at the side of tooth handle 9 function ends, impregnated groove is milled into till the step surface 14, impregnated groove is strip slot or fan-shaped groove, in the present embodiment be 4 strip slots and with and be that the center radial evenly distributes with the position of tooth head 10, clean with acetone or alcohol function end then, then dry described tooth handle 9;
G. make fin 11
The shape and size of the impregnated groove of being processed according to the f step of strip are made strip fin 11, this fin 11 is made by the diamond batch mixing, can certainly adopt tungsten carbide or other Hardmetal materials to make, also can adopt the mode of hot pressing to make when adopting diamond batch mixing or tungsten carbide to make fin 11;
Adopt the mode of copper brazing or silver brazing to be fixed in the corresponding impregnated groove ready fin 11 in the g step, present embodiment adopts the mode of copper brazing to weld;
I. insulation again
To put in the incubator insulation 6 hours through the pick that the h step welds fin, temperature is 200～400 degrees centigrade;
J. operation after
To carrying out solder flux removing, finishing and polishing through the pick after the insulation of i step.
Embodiment four,
The characteristics of present embodiment are that fin and the tooth head in the impregnated pit in the impregnated groove is to adopt the mode of welding to weld respectively, the following specifically describes its performance.
As Figure 12, Figure 13 and shown in Figure 14, the diamond cast-in pick of present embodiment comprises tooth handle 15 and tooth head 16, the left end of tooth handle 15 is a bare terminal end, be used for during use connecting with engineering equipment, the right-hand member of tooth handle 15 is the function end, tooth head 16 is arranged on the function end, in order to the impact and the friction of bearing work plane.The function end of tooth handle 15 is provided with impregnated pit and impregnated groove.Described impregnated pit is positioned on the end face of tooth handle function end and is positioned at the axial location of tooth handle, impregnated pit is a cylindrical shape, one end of tooth head 16 closely is embedded in the impregnated pit, the other end exposes the body of tooth handle 15, the part that tooth head 16 exposes the body of tooth handle 15 is the segment shape, clearly also can be hemispherical, coniform or other shape.Described impregnated groove is positioned on the side of tooth handle function end and is that the center radial evenly distributes with the position of impregnated pit, and impregnated groove is a strip slot in the present embodiment, and its quantity is at least two, and present embodiment is 4.Closely inlay fin 17 respectively in described 4 impregnated grooves; The shape and size of fin 17 are identical with the shape and size of impregnated groove in the present embodiment, and promptly strip slot is embedded in the identical strip fin 17 of shape and size, fin 17 and embed impregnated groove between the latter two the gap very little, in conjunction with closely.During actual fabrication, the thickness of fin 17 and the degree of depth of impregnated groove can be slightly variant, and promptly the lateral surface of fin 17 can be higher than, is lower than or puts down in the lateral surface of the body of tooth handle 15; The degree of depth of the thickness of fin 17 and impregnated groove is identical in the present embodiment, all is 0.1mm at least, and present embodiment is 4mm, and like this, the lateral surface of the fin 17 just lateral surface of the body of tooth handle 15 is concordant mutually.Tooth head 16 is formed by the hot pressing of diamond batch mixing in the present embodiment; Certainly save the higher diamond batch mixing of cost for reducing cost, tooth head 16 can adopt the cubic boron nitride that is more or less the same with diamond hardness and the batch mixing of tungsten carbide to replace the diamond batch mixing.Fin 17 is made by Hardmetal materials in the present embodiment, and apparent, fin 17 also can be formed by diamond batch mixing or tungsten carbide material hot pressing.The component of above-mentioned diamond batch mixing is with embodiment 1 in the present embodiment.Through on probation and follow-up study repeatedly, the diamond cast-in pick of present embodiment can reach more than 15～60 times of pick application life of ordinary rigid carbide button head application life.
The manufacture craft of the diamond cast-in pick in the present embodiment may further comprise the steps:
A. process the main body of tooth handle 15;
B. process impregnated pit and impregnated groove
Process described impregnated pit and impregnated groove at the function end of tooth handle 15, impregnated pit is positioned on the end face of function end of tooth handle 15 and is positioned at the axial location of tooth handle 15,4 strip slots are that the center radial evenly distributes with the position of impregnated pit, with acetone described tooth handle 15 function ends are cleaned, then dry;
C. make fin 17 and tooth head 16
The impregnated groove of being processed according to the b step and the shape and size of impregnated pit are made corresponding fin 17 and tooth head 16; Described fin 17 can be by a kind of the making in diamond batch mixing, tungsten carbide or the Hardmetal materials, and present embodiment adopts Hardmetal materials to make; Tooth head 16 can be made by a kind of or two kinds of material hot pressing in described diamond batch mixing, cubic boron nitride or the tungsten carbide, and present embodiment adopts the hot pressing of diamond batch mixing to form;
Adopt the copper brazing mode to be fixed in the corresponding impregnated groove ready fin 17 in the c step; Adopt the mode of copper brazing to be fixed in the corresponding impregnated pit on ready tooth head 16 in the c step; Also can adopt similar fashion making such as silver brazing;
E. insulation
To put in the incubator through the pick that the d step welds and be incubated 6 hours, temperature is 200～400 degrees centigrade;
F. operation after
To carrying out solder flux removing, finishing and polishing through the pick after the insulation of e step.
Explanation is that the mode that above embodiment adopts schematic diagram to combine with literal has been carried out comparatively detailed explanation to diamond cast-in pick of the present invention, and is only unrestricted in order to technical scheme of the present invention to be described at last; Other modifications that those of ordinary skills make technical scheme of the present invention or be equal to replacement, for example, change to described fin and tooth head shapes, size and material, perhaps combination is selected to manufacture craft, perhaps to the combination and variation of manufacturing process steps, only otherwise break away from the spirit and scope of technical solution of the present invention, all should be encompassed in the middle of the claim scope of the present invention.
Claims (2)
1. diamond cast-in pick, comprise tooth handle and tooth head, one end of tooth handle is a bare terminal end, bare terminal end is used for connecting with equipment, the other end of tooth handle is the function end, the tooth head is arranged on the function end, it is characterized in that: impregnated pit and impregnated groove are set at described tooth handle function end, impregnated pit is positioned on the end face of tooth handle function end and is positioned at the axial location of tooth handle, impregnated groove is positioned on the side of tooth handle function end and is that the center radial evenly distributes with the position of impregnated pit, impregnated groove is strip slot or fan-shaped groove, and the quantity of impregnated groove is two or more; The first part of described tooth is embedded in the impregnated pit, another part projecting teeth handle body; Described tooth head is made by the diamond batch mixing; All be inlaid with fin in the described impregnated groove, the shape and size of described fin are consistent with the shape and size of impregnated groove; Described fin is made by the diamond batch mixing; The degree of depth of described impregnated groove is 0.1mm at least; Impregnated pit is a cylindrical shape, the part of tooth head projecting teeth handle body be hemispherical, segment shape or coniform in a kind of shape; The component of described diamond batch mixing is: the weight ratio of diamond and other batch mixing is 2: 3, and wherein other batch mixing comprises tungsten carbide 15%, titanium carbide 45%, copper 33%, cobalt 5% and silver 2% by weight percentage; Described diamond cast-in pick adopts the manufacture craft that may further comprise the steps to make:
A. process tooth handle main body
B. process impregnated pit and impregnated groove
Process described impregnated pit and impregnated groove at tooth handle function end, impregnated pit is positioned on the end face of tooth handle function end and is positioned at the axial location of tooth handle, impregnated groove is strip slot or fan-shaped groove and is that the center radial evenly distributes with the position of impregnated pit, with acetone or alcohol described tooth handle function end is cleaned then, then dry;
C. make carbon pipe and carbon core mold
Make the carbon pipe according to shape through the tooth handle function end of the tooth handle main body after the processing of a step, the shape of this carbon tube cavity one end with process through a step after the shape of tooth handle function end of tooth handle main body consistent; The other end shape of this carbon tube cavity is consistent with the outer shape of carbon core, inserts the carbon pipe to make things convenient for the carbon core; Carbon core one end is provided with carbon core pit, and the shape and size of this carbon core pit are made according to tooth head shapes to be processed, and the shape and size of carbon core pit are consistent with the shape and size of described tooth head projecting teeth handle body part; Carbon pipe and the carbon core mold made are also dried with acetone or alcohol wash;
D. hot pressing tooth head and fin
One end of the carbon pipe that the c step is made is sleeved on the function end of the tooth handle that the b step makes, the diamond batch mixing is imported the carbon pipe to fill impregnated pit and impregnated groove, after treating that impregnated pit and impregnated groove fill up, according to the size continuation importing diamond batch mixing of tooth head projecting teeth handle body part to be processed; Then, an end that the carbon core is had carbon core pit inserts the carbon pipe, and to tooth handle direction the carbon core is slightly exerted pressure, and the connection power supply is heated to 700～1350 degrees centigrade with the diamond batch mixing makes the complete fusion of diamond batch mixing, deenergization then;
E. insulation
The pick that the d step is machined was put in the incubator insulation 6 hours, and temperature is 200～400 degrees centigrade;
F. operation after
Pick after the insulation of e step is carried out solder flux removing, finishing and polishing.
2. diamond cast-in pick according to claim 1 is characterized in that: the surface of carbon tube cavity and carbon core pit is provided with spot-like projections or point-like pit in described c step; Power supply in described d step adopts intermediate frequency, high frequency or laser welder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102305973A CN101382072B (en) | 2008-10-27 | 2008-10-27 | Diamond cast-in pick and making process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102305973A CN101382072B (en) | 2008-10-27 | 2008-10-27 | Diamond cast-in pick and making process thereof |
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| Publication Number | Publication Date |
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| CN101382072A CN101382072A (en) | 2009-03-11 |
| CN101382072B true CN101382072B (en) | 2010-09-29 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2914322A1 (en) * | 2009-07-09 | 2011-01-13 | Scoperta, Inc. | Wear-resistant attachments for high-wear applications |
| CN101792906B (en) * | 2010-04-12 | 2012-07-04 | 吉林大学 | Bionic coupling method for processing machinery parts by local laser melting and consolidation |
| CN103042282B (en) * | 2012-12-24 | 2015-04-15 | 镇江大有硬质材料有限公司 | Method for brazing diamond drilling tools |
| CN106150386A (en) * | 2015-04-10 | 2016-11-23 | 阳谷夏工精锻有限公司 | Wear-resisting type churning driven pick |
| CN106593439A (en) * | 2016-11-30 | 2017-04-26 | 安徽省皖江机电设备制造有限公司 | High-abrasion-resistance and high-impact-resistance mining cutting teeth and machining method thereof |
| CN107083958A (en) * | 2017-06-15 | 2017-08-22 | 河南理工大学 | A kind of Novel cutting tooth |
| CN108570590B (en) * | 2018-06-07 | 2021-02-23 | 株洲硬质合金集团有限公司 | Impregnated diamond matrix, impregnated diamond material and preparation method thereof |
| CN109807555A (en) * | 2019-01-15 | 2019-05-28 | 常德市中天精密工具有限公司 | A kind of interference cold pressing treatment method of break bar cutter ring |
| CN113789706B (en) * | 2021-09-14 | 2023-04-25 | 李文凯 | Asphalt pavement milling machine |
| CN114653953B (en) * | 2022-04-01 | 2024-05-24 | 徐州巴特工程机械股份有限公司 | Manufacturing method of high-strength breaking hammer drill rod |
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