CN104148885A - Polycrystalline diamond pick-rod machining process - Google Patents
Polycrystalline diamond pick-rod machining process Download PDFInfo
- Publication number
- CN104148885A CN104148885A CN201410266114.0A CN201410266114A CN104148885A CN 104148885 A CN104148885 A CN 104148885A CN 201410266114 A CN201410266114 A CN 201410266114A CN 104148885 A CN104148885 A CN 104148885A
- Authority
- CN
- China
- Prior art keywords
- diamond
- pick rod
- rod body
- pick
- composite polycrystal
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/08—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
- B24C1/086—Descaling; Removing coating films
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D17/00—Details of, or accessories for, portable power-driven percussive tools
- B25D17/02—Percussive tool bits
Abstract
A polycrystalline diamond pick-rod machining process comprises the following steps of firstly, machining a pick-rod body, forming a prefabricated groove in an end of the working end of the pick-rod body, and machining a polycrystalline diamond composite piece at the same time; secondly, inlaying the polycrystalline diamond composite piece in the prefabricated groove; thirdly, conducting quality examination; fourthly, conducting surface corrosion prevention processing after examination is conducted; fifthly, conducting packaging and putting a pick-rod in storage. The strength, the abrasion resistance and the impact resistance of the pick-rod machined according to the process are improved, the pick-rod is not prone to fracture and bending under high-frequency continuous work, the service life is greatly prolonged, and work efficiency is greatly improved.
Description
Technical field
The present invention relates to the engineering construction apparatuses such as a kind of electric pick, pneumatic pick, gas pick, relate in particular to a kind of polycrystalline diamond pick rod processing technology.
Background technology
In the prior art, electric pick, pneumatic pick, gas pick etc. are general in engineering construction sector application.
Electric pick (electric breaker) is the double insulation hand held electric tool taking single phase series motor as power.
Pneumatic pick is taking compressed air as power, utilizes the hand-held construction equipment of the broken hard objects of percussion.
Gas pick is exactly that to utilize compressed air be that piston repeatedly clashes into pick and cuts into a mountain to repair the roads and dig a kind of portable equipment in ore deposit.
The features such as that electric pick, pneumatic pick, gas pick have is safe and reliable, efficiency is high, easy to operate, are widely used in pipeline laying, mechanical erection, plumbing Facilities Construction, interior decoration, port facilities construction, coal mining, exploitation soft rock; Plane suspension column hole, boiling water ditch; Broken mixed earth, frozen soil and other engineering constructions in building installation engineering, and in mechanical industry, need to produce the occasion of ballistic motion, as the handling of tractor, tank track pin etc.
Pick rod is as the spare part in common use of electric pick, pneumatic pick, gas pick, and in running, jump bit is along the beater mechanism shock that repeatedly moves, and pick rod withstands on just can reach the object smashing in construction surface.Pick rod part withstands shocks larger in the course of the work, and common problem is its low strength, and wear-resisting, shock-resistant ability is generally used several hours and just need to change pick rod; In high frequency work continuously lower easy appearance fracture, bending, change frequent, ineffective defect.Therefore, need badly and a kind ofly can strengthen wearability, improve impact resistance, durable pick rod.
Summary of the invention
The present invention is in order to solve weak point of the prior art, provides a kind of and processes that wearability is high, the processing technology of the pick rod of strong shock resistance, long service life.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: polycrystalline diamond pick rod processing technology, comprise the following steps, and processing pick rod body, offers pregroove marks in the end of pick rod body operation end; Process composite polycrystal-diamond simultaneously; Then composite polycrystal-diamond is mounted in pregroove marks; Then carry out quality inspection; After inspection, carry out surface anticorrosion processing; Finally packaging warehouse-in.
The concrete procedure of processing of described pick rod body is,
(1), pick rod body blanking: blanking adopts the round bar of 42CrMo or 35CrMnSi medium carbon alloy steel, and blanking is calculated by weight, and cutting stock weight is 1.1 times of pick rod body blank weight;
(2), forge: adopt warm and hot forging mode, initial forging temperature is 1230 DEG C, and final forging temperature is 880 DEG C, forges the profile of pick rod body blank;
(3), machining: adopt lathe and milling machine, by drawing processing;
(4), cladding wearing layer: adopt tungsten-carbide powder, at the circumferential surface cladding wearing layer of the operation end of pick rod body, making the thickness of wearing layer is 2mm-3mm, and hardness reaches HRC55-60;
(5), heat treatment: pick rod body is vertically placed in glowing furnace, 850 DEG C of hardening heats; The type of cooling is oil cooling; Temperature is 450 DEG C, and what obtain is organized as martensitic structure; After heat treatment, the hardness of pick rod body reaches HRC42-45, and the hardness of cladding wearing layer still keeps HRC55-60;
(6), pick rod body alignment: pick rod body is carried out to alignment with pressure correction machine;
(7), Shot Blasting: pick rod body is carried out to surface treatment with shot-blast apparatus, remove the oxide skin of pick rod body surface, open texture, improves tensile strength;
(8), processing refine pregroove marks: the pregroove marks of inlaying composite polycrystal-diamond is offered in the end to pick rod body operation end, and first boring is reamed again;
(9), check for subsequent use: by drawing pick rod body is carried out to quality inspection.
The concrete procedure of processing of described composite polycrystal-diamond is,
(1), the batching of diadust, mixing: choose the common diadust of the 30-40um granularity of common diadust, 30% weight of the 50-60um granularity of 40% weight, the common diadust of 10-20um granularity and the 5-20.0umCo powder of 10% weight of 20% weight, utilize planetary ball mill by above four kinds of powder ball millings 10 hours, after mixing, be placed under the vacuum drying chamber of 120 DEG C and save backup;
(2), in pyrophyllite block by the assembling of diadust and carbide alloy: get diadust and the hard alloy substrate forcing press compacting of 5 tons that 1.0g mixes and assemble; Matrix after assembling compacting is placed in to the synthetic piece of pyrophillite, puts into conducting steel ring, the synthetic mould of composition, wherein the thickness of diamond layer is 2.0mm;
(3), that the pyrophyllite block of assembling is dry: 180 DEG C of baking temperatures, 1 hour time;
(4), synthetic under HTHP: the synthetic mould of composition is put into hexahedron synthetic diamond press, and at pressure 5.8-6.0 GPa, 1350 DEG C-1500 DEG C of temperature, synthetic 5 minutes, make composite polycrystal-diamond after cooling 5 minutes;
(5), blasting treatment: the sinter of removing composite polycrystal-diamond surface;
(6), the rear processing of composite polycrystal-diamond: adopt grinding machine to carry out machining, after obtain composite polycrystal-diamond.Diameter tolerance is ± 0.01mm that height tolerance is ± 0.05mm;
(7), check for subsequent use: by drawing composite polycrystal-diamond is carried out to quality inspection.
The concrete procedure of processing that composite polycrystal-diamond is mounted in pregroove marks is, PCD compacts brazing enters in the pregroove marks of pick rod body, and welding temperature is 650 DEG C, adopts the silver brazing agent of high-intensity silver solder and powdery.
Composite polycrystal-diamond is mounted to the mosaic mode that adopts interference fit in pregroove marks, the magnitude of interference is controlled at 0.05mm.
Described composite polycrystal-diamond is made up of diamond layer and hard alloy substrate, hard alloy substrate is cylindrical, it is conical that diamond layer is, the middle part, outer end of diamond layer is spherical structure, hard alloy substrate diameter is 4.0-28.0mm, axial length is 4.0mm-40.0mm, and the thickness of diamond layer is 0.1-3.0mm.
Adopt technique scheme, due to cladding wearing layer on pick rod body outer circumference surface, so just greatly strengthen the wearability of pick rod, in pick rod body operation end, preformed groove is set simultaneously, and in preformed groove hole soldering or interference assembling composite polycrystal-diamond, so also greatly improved impact property, and pick rod body strengthens greatly in intensity after Overheating Treatment.In a word, the pick rod that adopts the present invention to process, strength increase, wearability strengthens, and shock-resistant ability improves, and is also not easy to occur fracture, bending under high frequency is worked continuously, and greatly extend service life, also greatly improved operating efficiency.
Brief description of the drawings
Fig. 1 is the structural representation that processes pick rod after employing the present invention;
Fig. 2 is the structural representation that processes pick rod body after employing the present invention;
Fig. 3 is the structural representation that processes composite polycrystal-diamond after employing the present invention.
Detailed description of the invention
As shown in Figure 1, Figure 2 and Figure 3, polycrystalline diamond pick rod processing technology of the present invention, comprises the following steps, and processing pick rod body 1, offers pregroove marks 2 in the end of pick rod body 1 operation end; Process composite polycrystal-diamond 3 simultaneously; Then composite polycrystal-diamond 3 is mounted in pregroove marks 2; Then carry out quality inspection; After inspection, carry out surface anticorrosion processing; Finally packaging warehouse-in.
Wherein the concrete procedure of processing of pick rod body 1 is,
(1), pick rod body 1 blanking: blanking adopts the round bar of 42CrMo or 35CrMnSi medium carbon alloy steel, and blanking is calculated by weight, and cutting stock weight is 1.1 times of pick rod body 1 blank weight;
(2), forge: adopt warm and hot forging mode, initial forging temperature is 1230 DEG C, and final forging temperature is 880 DEG C, forges the profile of pick rod body 1 blank;
(3), machining: adopt lathe and milling machine, by drawing processing (being of a size of prior art on drawing);
(4), cladding wearing layer 4: adopt tungsten-carbide powder, at the circumferential surface cladding wearing layer 4 of the operation end of pick rod body 1, making the thickness of wearing layer 4 is 2mm-3mm, and hardness reaches HRC55-60;
(5), heat treatment: pick rod body 1 is vertically placed in glowing furnace, 850 DEG C of hardening heats; The type of cooling is oil cooling; Temperature is 450 DEG C, and what obtain is organized as martensitic structure; After heat treatment, the hardness of pick rod body 1 reaches HRC42-45, and the hardness of cladding wearing layer 4 still keeps HRC55-60;
(6), pick rod body 1 alignment: pick rod body 1 is carried out to alignment with pressure correction machine;
(7), Shot Blasting: pick rod body 1 is carried out to surface treatment with shot-blast apparatus, removes the oxide skin on pick rod body 1 surface, like this can open texture, improve tensile strength;
(8), processing refine pregroove marks 2: the end of pick rod body 1 operation end is offered to the pregroove marks 2 of inlaying composite polycrystal-diamond 3, first boring is reamed again;
(9), check for subsequent use: by drawing pick rod body 1 is carried out to quality inspection.
Heat treatment step at pick rod body 1 must carry out after pick rod body 1 cladding wearing layer 4, after the Technology for Heating Processing of pick rod body 1, must closely follow pick rod body 1 straightening technology.
The concrete procedure of processing of composite polycrystal-diamond 3 is,
(1), the batching of diadust, mixing: choose the common diadust of the 30-40um granularity of common diadust, 30% weight of the 50-60um granularity of 40% weight, the common diadust of 10-20um granularity and the 5-20.0umCo powder of 10% weight of 20% weight, utilize planetary ball mill by above four kinds of powder ball millings 10 hours, after mixing, be placed under the vacuum drying chamber of 120 DEG C and save backup;
(2), in pyrophyllite block by the assembling of diadust and carbide alloy: get diadust and the hard alloy substrate forcing press compacting of 5 tons that 1.0g mixes and assemble; Matrix after assembling compacting is placed in to the synthetic piece of pyrophillite, puts into conducting steel ring, the synthetic mould of composition, wherein the thickness of diamond layer is 2.0mm;
(3), that the pyrophyllite block of assembling is dry: 180 DEG C of baking temperatures, 1 hour time;
(4), synthetic under HTHP: the synthetic mould of composition is put into hexahedron synthetic diamond press, and at pressure 5.8-6.0 GPa, 1350 DEG C-1500 DEG C of temperature, synthetic 5 minutes, make composite polycrystal-diamond 3 after cooling 5 minutes;
(5), blasting treatment: the sinter of removing composite polycrystal-diamond 3 surfaces;
(6), the rear processing of composite polycrystal-diamond 3: adopt grinding machine to carry out machining, after obtain composite polycrystal-diamond 3.Diameter tolerance is ± 0.01mm that height tolerance is ± 0.05mm;
(7), check for subsequent use: by drawing composite polycrystal-diamond 3 is carried out to quality inspection.
The concrete procedure of processing that composite polycrystal-diamond 3 is mounted in pregroove marks 2 is, composite polycrystal-diamond 3 solderings enter in the pregroove marks 2 of pick rod body 1, and welding temperature is 650 DEG C, adopts the silver brazing agent of high-intensity silver solder and powdery.
The mosaic mode that composite polycrystal-diamond 3 is mounted to the interior employing interference fit of pregroove marks 2, the magnitude of interference is controlled at 0.05mm.
Composite polycrystal-diamond 3 is made up of diamond layer 5 and hard alloy substrate 6, hard alloy substrate 6 is cylindrical, it is conical that diamond layer 5 is, the middle part, outer end of diamond layer 5 is spherical structure 7, hard alloy substrate 6 diameters are 4.0-28.0mm, axial length is 4.0mm-40.0mm, and the thickness of diamond layer 5 is 0.1-3.0mm.
Before packaging warehouse-in, need the effect of welding/interference fit to test, and carry out surface anticorrosion processing: polycrystalline diamond point pick is carried out to antirust processing, oiling.
Above-described embodiment is not done any pro forma restriction to shape of the present invention, material, structure etc.; any simple modification, equivalent variations and modification that every foundation technical spirit of the present invention is done above embodiment, all belong to the protection domain of technical solution of the present invention.
Claims (6)
1. polycrystalline diamond pick rod processing technology, is characterized in that: comprise the following steps, processing pick rod body, offers pregroove marks in the end of pick rod body operation end; Process composite polycrystal-diamond simultaneously; Then composite polycrystal-diamond is mounted in pregroove marks; Then carry out quality inspection; After inspection, carry out surface anticorrosion processing; Finally packaging warehouse-in.
2. polycrystalline diamond pick rod processing technology according to claim 1, is characterized in that: the concrete procedure of processing of described pick rod body is,
(1), pick rod body blanking: blanking adopts the round bar of 42CrMo or 35CrMnSi medium carbon alloy steel, and blanking is calculated by weight, and cutting stock weight is 1.1 times of pick rod body blank weight;
(2), forge: adopt warm and hot forging mode, initial forging temperature is 1230 DEG C, and final forging temperature is 880 DEG C, forges the profile of pick rod body blank;
(3), machining: adopt lathe and milling machine, by drawing processing;
(4), cladding wearing layer: adopt tungsten-carbide powder, at the circumferential surface cladding wearing layer of the operation end of pick rod body, making the thickness of wearing layer is 2mm-3mm, and hardness reaches HRC55-60;
(5), heat treatment: pick rod body is vertically placed in glowing furnace, 850 DEG C of hardening heats; The type of cooling is oil cooling; Temperature is 450 DEG C, and what obtain is organized as martensitic structure; After heat treatment, the hardness of pick rod body reaches HRC42-45, and the hardness of cladding wearing layer still keeps HRC55-60;
(6), pick rod body alignment: pick rod body is carried out to alignment with pressure correction machine;
(7), Shot Blasting: pick rod body is carried out to surface treatment with shot-blast apparatus, remove the oxide skin of pick rod body surface, open texture, improves tensile strength;
(8), processing refine pregroove marks: the pregroove marks of inlaying composite polycrystal-diamond is offered in the end to pick rod body operation end, and first boring is reamed again;
(9), check for subsequent use: by drawing pick rod body is carried out to quality inspection.
3. polycrystalline diamond pick rod processing technology according to claim 1, is characterized in that: the concrete procedure of processing of described composite polycrystal-diamond is,
(1), the batching of diadust, mixing: choose the common diadust of the 30-40um granularity of common diadust, 30% weight of the 50-60um granularity of 40% weight, the common diadust of 10-20um granularity and the 5-20.0umCo powder of 10% weight of 20% weight, utilize planetary ball mill by above four kinds of powder ball millings 10 hours, after mixing, be placed under the vacuum drying chamber of 120 DEG C and save backup;
(2), in pyrophyllite block by the assembling of diadust and carbide alloy: get diadust and the hard alloy substrate forcing press compacting of 5 tons that 1.0g mixes and assemble; Matrix after assembling compacting is placed in to the synthetic piece of pyrophillite, puts into conducting steel ring, the synthetic mould of composition, wherein the thickness of diamond layer is 2.0mm;
(3), that the pyrophyllite block of assembling is dry: 180 DEG C of baking temperatures, 1 hour time;
(4), synthetic under HTHP: the synthetic mould of composition is put into hexahedron synthetic diamond press, and at pressure 5.8-6.0 GPa, 1350 DEG C-1500 DEG C of temperature, synthetic 5 minutes, make composite polycrystal-diamond after cooling 5 minutes;
(5), blasting treatment: the sinter of removing composite polycrystal-diamond surface;
(6), the rear processing of composite polycrystal-diamond: adopt grinding machine to carry out machining, after obtain composite polycrystal-diamond,
Diameter tolerance is ± 0.01mm that height tolerance is ± 0.05mm;
(7), check for subsequent use: by drawing composite polycrystal-diamond is carried out to quality inspection.
4. polycrystalline diamond pick rod processing technology according to claim 1, it is characterized in that: the concrete procedure of processing that composite polycrystal-diamond is mounted in pregroove marks is, PCD compacts brazing enters in the pregroove marks of pick rod body, welding temperature is 650 DEG C, adopts the silver brazing agent of high-intensity silver solder and powdery.
5. polycrystalline diamond pick rod processing technology according to claim 1, is characterized in that: composite polycrystal-diamond is mounted to the mosaic mode that adopts interference fit in pregroove marks, the magnitude of interference is controlled at 0.05mm.
6. polycrystalline diamond pick rod processing technology according to claim 3, it is characterized in that: described composite polycrystal-diamond is made up of diamond layer and hard alloy substrate, hard alloy substrate is cylindrical, it is conical that diamond layer is, the middle part, outer end of diamond layer is spherical structure, hard alloy substrate diameter is 4.0-28.0mm, and axial length is 4.0mm-40.0mm, and the thickness of diamond layer is 0.1-3.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410266114.0A CN104148885B (en) | 2014-06-16 | 2014-06-16 | Polycrystalline diamond pick rod processing technique |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410266114.0A CN104148885B (en) | 2014-06-16 | 2014-06-16 | Polycrystalline diamond pick rod processing technique |
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| CN104148885B CN104148885B (en) | 2016-07-20 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105756114A (en) * | 2016-04-28 | 2016-07-13 | 宝得粉末注射成形（常熟）有限公司 | Steel chisel for hydraulic breaker |
| CN105888570A (en) * | 2016-06-21 | 2016-08-24 | 东营威玛石油钻具有限公司 | Washout preventing tool connector |
| CN109807576A (en) * | 2019-04-04 | 2019-05-28 | 上海永桦合金工具有限公司 | The processing technology of outer chamfer push-pull knife in a kind of bonding is golden |
| CN111420616A (en) * | 2020-04-02 | 2020-07-17 | 广东钜鑫新材料科技股份有限公司 | Diamond compact and preparation method thereof |
| CN111515703A (en) * | 2020-04-20 | 2020-08-11 | 安徽菱力设备科技有限公司 | Scraper welding stress relieving process |
| CN112207511A (en) * | 2020-09-17 | 2021-01-12 | 南京工程学院 | Short-flow manufacturing process for surface-hardened long-shaft forgings |
| CN112760563A (en) * | 2020-12-22 | 2021-05-07 | 济南厚德耐磨材料有限公司 | Method for processing wear-resistant steel bar for quartz sand rod mill |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105756114A (en) * | 2016-04-28 | 2016-07-13 | 宝得粉末注射成形（常熟）有限公司 | Steel chisel for hydraulic breaker |
| CN105888570A (en) * | 2016-06-21 | 2016-08-24 | 东营威玛石油钻具有限公司 | Washout preventing tool connector |
| CN109807576A (en) * | 2019-04-04 | 2019-05-28 | 上海永桦合金工具有限公司 | The processing technology of outer chamfer push-pull knife in a kind of bonding is golden |
| CN111420616A (en) * | 2020-04-02 | 2020-07-17 | 广东钜鑫新材料科技股份有限公司 | Diamond compact and preparation method thereof |
| CN111515703A (en) * | 2020-04-20 | 2020-08-11 | 安徽菱力设备科技有限公司 | Scraper welding stress relieving process |
| CN112207511A (en) * | 2020-09-17 | 2021-01-12 | 南京工程学院 | Short-flow manufacturing process for surface-hardened long-shaft forgings |
| CN112207511B (en) * | 2020-09-17 | 2021-10-26 | 南京工程学院 | Short-flow manufacturing process for surface-hardened long-shaft forgings |
| CN112760563A (en) * | 2020-12-22 | 2021-05-07 | 济南厚德耐磨材料有限公司 | Method for processing wear-resistant steel bar for quartz sand rod mill |
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| CN104148885B (en) | 2016-07-20 |
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