CN109732062A - Metal mold castingin coal winning machine cutting bit - Google Patents
Metal mold castingin coal winning machine cutting bit Download PDFInfo
- Publication number
- CN109732062A CN109732062A CN201910171626.1A CN201910171626A CN109732062A CN 109732062 A CN109732062 A CN 109732062A CN 201910171626 A CN201910171626 A CN 201910171626A CN 109732062 A CN109732062 A CN 109732062A
- Authority
- CN
- China
- Prior art keywords
- tooth head
- castingin
- pick
- denticle
- mold
- 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.)
- Withdrawn
Links
Landscapes
- Component Parts Of Construction Machinery (AREA)
Abstract
The invention belongs to coal winning machine cutting bit technical fields, are related to a kind of metal mold castingin coal winning machine cutting bit, are mainly made of tooth head and denticle；The end of tooth head is cone, and tooth head and denticle are coupled by metal mold imbedding process, and tooth head is wrapped in inside by denticle；Tooth head material is chromium tungsten spoken parts in traditional operas antifriction alloy, and denticle material is low-alloy steel.Tooth head is intracavitary using positioning device positioning in the type of castingin mold, and a castingin molding falls off tooth head not in pick coal work.Tooth head is combined with denticle ingredient using Optimized by Orthogonal Test, is guaranteed the wear-resisting property and shock resistance of pick, is improved the service life of pick.
Description
Technical field
The invention belongs to coal winning machine cutting bit technical fields, are related to a kind of metal mold castingin coal winning machine cutting bit, are a kind of with new
Wear resistant alloy material, new process development coal winning machine cutting bit.
Background technique
Coal winning machine cutting bit main working performance first is that shock resistance.Structure is complicated for mining geology, and coal and rock are in mixed
Conjunction state.When mechanical coal mining, pick meets coal and mines, and meets rock and adopts rock.When adopting rock, an important process of coalcutter
Performance is impact flexibility.If the shock resistance at coal winning machine cutting bit denticle position is not high enough, pick will be bent or fracture, from
And performance of losing the job, it scraps in advance.
Another important process performance of coal winning machine cutting bit is wearability.Pick wear-resisting property is mainly reflected in hard alloy
No wear-resisting, whether hard alloy falls off, whether tooth tip position is wear-resisting etc..Pick is made of denticle and hard alloy, mine
Pick used at present is largely manufactured using soldering processes, and denticle and hard alloy connecting method use soldering processes, is being adopted
During coal, often because denticle abrasion causes tooth head hard alloy to fall off in advance, shorten cutting-gear life.It is hard when to prevent pick from working
Matter alloy falls off, and is welded with wearing layer in denticle tip when producing pick to protect hard alloy not fall off.
Traditional coal winning machine cutting bit is forging soldering pick and two kinds of cast-in cutting pick.
Forging soldering pick, denticle use forging molding, tooth head using tungsten-cobalt Series powder by high temperature and pressure be sintered and
At tooth head and denticle use soldering connection.Denticle uses forging molding, and impact flexibility is higher, but hardness is lower.Tooth head is tungsten
Cobalt hard alloy, hardness are greater than 70HRC, and wearability is higher.But since tooth head and denticle use soldering connection, tooth head must be circle
Cylindricality can just be put into denticle and is brazed, since the denticle material hardness of package tooth head is lower, when this part denticle occurs one
When wearing surely, tooth head abrasion loss is still smaller, and tooth head will lose denticle package, simultaneously because the intensity of soldering processes is low, once tooth
After head exposes certain length, tooth head can occur to fall off in advance, eventually lead to pick premature failure, but the abrasion to fall off is lesser
Tooth head cannot be reused, and cause the waste of material, increase producing cost.
Cast-in cutting pick, tooth head are sintered using tungsten-cobalt Series powder by high temperature and pressure, using the technique of sand casting,
By tooth head castingin in denticle.There are organizational coarsenesies, the intensity and impact flexibility of denticle material for the denticle gone out due to sand casting
Lower, the disadvantages of casting surface finish is poor, Modeling Material usage amount is big, production efficiency is lower, pick performance and production effect
Rate still has the place that can be improved.
Summary of the invention
For the use state of the current coal winning machine cutting bit in mine, high performance pick is developed, improves the service life of pick,
Meet the needs of mining production, the present invention provides a kind of metal mold castingin coal winning machine cutting bit.Chromium tungsten spoken parts in traditional operas antifriction alloy tooth head is adopted
With metal type dies casting and forming, and it is equipped with location hole in a mold, is inserted into positioning in location hole in advance in cast tooth head
Steel wire, positioning wire is located at the center of chromium tungsten spoken parts in traditional operas antifriction alloy tooth head after casting, and chromium tungsten is white when stainless steel wire is as castingin
The positioning tool of mouth antifriction alloy tooth head.
Chromium tungsten spoken parts in traditional operas antifriction alloy tooth head is coupled with pick denticle using metal mold imbedding process.Chromium tungsten spoken parts in traditional operas antifriction alloy
Tooth head is positioned in the intracavitary use positioning device of metal type dies type, in the intracavitary pre-set central aperture of type and recessed cylinder
Positioning device, and the chromium tungsten spoken parts in traditional operas antifriction alloy tooth head with positioning wire is inserted into positioning hole, it then molds, carries out castingin work
Skill.
The castingin molding of metal mold castingin coal winning machine cutting bit, it is using the high temperature of low-alloy steel molten metal that chromium tungsten spoken parts in traditional operas is resistance to
Gold surface fusing is merged, after high temperature low-alloy steel molten metal cooled and solidified, denticle and chromium tungsten spoken parts in traditional operas antifriction alloy interface are generated
Metallurgical bonding layer or partial metallurgical binder course and be integrally formed.The chromium that metal mold castingin coal winning machine cutting bit is inlayed in coal work
Tungsten spoken parts in traditional operas antifriction alloy tooth head point is not susceptible to fall off.
Technical solution of the present invention:
A kind of metal mold castingin coal winning machine cutting bit, is mainly made of tooth head and denticle；The tooth head is cone, by gold
Genotype casting and forming, the tooth head and denticle are coupled by metal mold imbedding process, and tooth head is wrapped in inside by denticle；
The tooth head, material is chromium tungsten spoken parts in traditional operas antifriction alloy, using Optimized by Orthogonal Test combined alloy ingredient, main component
Are as follows: C:2.6~3.2%, Cr:15~18%, W:1.5~3%, Mo:1.5~2.5%, Mn:1.2~1.7%, Si :≤1%,
Cu:0.8~1%；Chromium tungsten spoken parts in traditional operas antifriction alloy is quenched that treated hardness HRC=65~68.
The denticle, material are low-alloy steel, using Optimized by Orthogonal Test combined alloy composition of steel, main component are as follows: C:
0.28~0.37%, Mn:1.5~2.0%, Si :≤0.4%, make impact property ak > 49J/cm of the denticle under as cast condition2, tooth tip
Hardness HRC >=42 at position.
A kind of manufacturing method of metal mold castingin coal winning machine cutting bit pours into chromium tungsten spoken parts in traditional operas antifriction alloy molten metal with fixed
In the tooth head metal mold grinding tool of position steel wire, the tooth head with positioning wire is obtained after cooling, after being heat-treated to tooth head, then will
Tooth head is intracavitary by the type for the castingin mold that positioning device is preset in metal mold cast-in cutting pick, low-alloy steel molten metal of casting, cold
But pick is processed by size requirement afterwards, finally pick is integrally heat-treated again, finally obtains metal mold cast-in cutting pick.Specifically
It is as follows:
The tooth head with positioning wire prepares molding, tooth head metal mold using the casting technique of permanent mold casting
Mold is white by chromium tungsten by the positioning hole of the tooth head metal type dies of positioning wire insertion after 150~200 DEG C of preheating
Mouth antifriction alloy molten metal is cast in tooth head metal type dies, cooling.
Described is heat-treated tooth head, refers to tooth head being heated to 930~950 DEG C, keeps the temperature 5~10 hours, cold with furnace
But.
The type of the described castingin mold that tooth head is preset in metal mold cast-in cutting pick by positioning device is intracavitary, refers to castingin
Mold is provided with location hole in the intracavitary pre-set central of the type of castingin mold and upper surface is recessed after 150 DEG C~200 DEG C of preheating
Cylindrical positioning device, and the positioning hole of the positioning wire of tooth head insertion positioning device, the end of tooth head and positioning are filled
The upper surface set is in contact.
Described is integrally heat-treated pick, refers to pick being heated to 930 DEG C~950 DEG C, and heat preservation 30min~
40min, the tooth head position of pick front end use water as hardening media, remaining position natural cooling in atmospheric environment, wait cut
Tooth carries out tempering after being cooled to room temperature, tempering temperature is 210 DEG C~230 DEG C, soaking time T > 2 hour, furnace cooling.
The diameter of the positioning wire is 1.5mm~2mm.
Metal mold castingin coal winning machine cutting bit of the invention has compared with forging soldering coal winning machine cutting bit, castingin coal winning machine cutting bit
Following difference:
(1) compared with metal mold castingin coal winning machine cutting bit of the invention is brazed coal winning machine cutting bit with forging:
The alloying component of two kinds of picks is different: in forging soldering coal winning machine cutting bit pick denticle by structural steel forging molding,
Tooth head hard alloy is to be sintered by tungsten-cobalt Series powder through high temperature and pressure.In metal mold castingin coal winning machine cutting bit of the invention
Denticle alloy is the low-alloy steel being composed by Optimized by Orthogonal Test, and the tooth head alloy part being panelized is excellent by Orthogonal Method
Change the chromium tungsten spoken parts in traditional operas antifriction alloy being composed.
It is different that two kinds of picks are coupled technique: it is to use that the denticle of forging soldering coal winning machine cutting bit, which is coupled technique with hard alloy,
Soldering processes carry out.It is to pour into the molten metal of high temperature denticle ingredient that metal mold castingin coal winning machine cutting bit of the invention, which is coupled technique,
It is pre-placed in the metal mold grinding tool of chromium tungsten spoken parts in traditional operas antifriction alloy, denticle and the resistance to adjustment of chromium tungsten spoken parts in traditional operas after molten metal cooled and solidified
Gold fuses into one.
(2) metal mold castingin coal winning machine cutting bit of the invention is compared with castingin coal winning machine cutting bit:
The hard alloy of two kinds of pick castingins is different: what castingin coal winning machine cutting bit was inlayed is raw with high temperature and pressure sintering process
The tungsten-cobalt serial carbide alloy of production.Metal mold coal winning machine cutting bit castingin of the invention is the chromium produced with gravity die casting process
Tungsten spoken parts in traditional operas antifriction alloy.
The casting technique of two kinds of picks is different: the imbedding process that castingin coal winning machine cutting bit uses is Sand Moulding Process.The present invention
The imbedding process that uses of metal mold castingin coal winning machine cutting bit for metal type dies technique.
(3) the heat treatment work of the heat treatment process of metal mold castingin coal winning machine cutting bit of the invention and other coal winning machine cutting bits
Skill compares:
Metal mold castingin coal winning machine cutting bit of the invention be combined by chromium tungsten spoken parts in traditional operas antifriction alloy with low-alloy steel it is compound
Metal material.The hardness number for improving tooth head and denticle is quenched by high temperature, and quenched residual stress and brittleness, control are reduced by tempering
Quenching Soaking Time processed and hardening media improve denticle shock resistance.
Beneficial effects of the present invention:
The tooth head fractions and denticle alloying component of metal mold castingin coal winning machine cutting bit of the invention are all made of Orthogonal Method
Optimum organization, while guaranteeing two kinds of cast performances, tooth head has enough hardness, and denticle has certain hardness and resistance to
Mill property.
Using metal type dies, the intensity and impact flexibility of the pick fine microstructures, material that cast out are high, casting surface light
Cleanliness is high, Modeling Material usage amount very little, high production efficiency.
Using conical tooth head instead of the cylin-drical tooth head of conventional brazing, so that tooth head after castingin, can securely fix
Inside denticle.
Using imbedding process, by chromium tungsten spoken parts in traditional operas antifriction alloy tooth head under the high temperature action of low-alloy steel molten metal when castingin
Surface melting, during molten metal cooled and solidified, the interface of denticle and tooth head generates whole metallurgical bonding layers or part smelting
Golden binder course, bond strength are high.
Using corresponding heat treatment process, so that tooth head has very high hardness, guarantee the wearability of pick, while denticle has
There is higher impact flexibility, guarantees that pick will not occur to bend or is broken when being on active service.
Positioning device is used in casting, guarantees that chromium tungsten spoken parts in traditional operas antifriction alloy is in the center of pick after castingin,
Guarantee each position uniform wear in pick use process.
It is tested through down-hole coal excavation, the tooth head of metal mold castingin coal winning machine cutting bit is not separated with denticle, do not fallen off, metal mold edge
Coal winning machine cutting bit relatively soldering pick is cast compared with cast-in cutting pick, and service life is improved.
Detailed description of the invention
Fig. 1 (a) and Fig. 1 (b) is respectively the top view and main view of tooth head metal type dies.
Fig. 2 is the schematic diagram of tooth head.
Fig. 3 (a) and Fig. 3 (b) respectively centered on be provided with location hole cylindrical positioning device main view and top view.
Fig. 4 is the castingin mold schematic diagram of metal mold cast-in cutting pick.
Fig. 5 is metal mold cast-in cutting pick schematic diagram.
Fig. 6 (a), Fig. 6 (b) and Fig. 6 (c) are the heat treatment cycle curve in metal mold cast-in cutting pick each stage；Wherein, Fig. 6
It (a) is tooth head annealing process curve, Fig. 6 (b) is pick head position heat treatment cycle curve, and Fig. 6 (c) is that pick body heat handles work
Skill curve.
In figure: 1 location hole a；2 cross gates；Positioning wire 3；Tooth head 4；5 positioning devices；6 location hole b；7 denticle
Specific embodiment
Below in conjunction with attached drawing and technical solution, a specific embodiment of the invention is further illustrated.
Chromium tungsten spoken parts in traditional operas antifriction alloy molten metal, refers to using No. 30 steel, gray cast iron, ferrochrome, molybdenum-iron, ferrotungsten, manganese iron, rare earth
Silicon, fine copper, fine aluminium carry out melting, and blanking sequence is gray cast iron, No. 30 steel, ferrochrome, molybdenum-iron, ferrotungsten, manganese iron, fine copper, fine aluminium, when
Molten metal is come out of the stove when reaching 1500~1600 DEG C, and rare earth silicon is added and fine aluminium obtains the chromium tungsten alloy molten metal for casting used.
Low-alloy steel molten metal refers to and carries out melting using No. 30 steel, manganese iron, rare earth silicon, fine aluminium, and blanking sequence is No. 30
Steel, manganese iron, come out of the stove when molten metal reaches 1600~1700 DEG C, and rare earth silicon is added and fine aluminium obtains low-alloy steel used of casting
Molten metal.
Take chromium tungsten spoken parts in traditional operas wear resistant alloy material, respectively gray cast iron 1.7kg, molybdenum-iron 0.4kg, ferrotungsten 0.3kg, No. 30 steel
5kg, ferrochrome 3kg, fine copper 0.1kg, manganese iron 0.1kg, foundry returns 1.4kg amount to 12kg.Take low-alloy steel material, respectively 30
Number steel 10kg, manganese iron 0.3kg amount to 10.3kg.
By tooth head metal type dies, (such as Fig. 1 (a) and Fig. 1 (b) are shown, are uniformly distributed 8 in tooth head metal type dies first
Casting mold cavity, in the centre of each type chamber, there are location hole a1, and cross gate 2 is equipped between type chamber and mould inner wall) it is pre-
Heat is to by the positioning hole of positioning wire insertion tooth head metal type dies, using 75KW medium frequency induction melting furnace after 150~200 DEG C
The chromium tungsten spoken parts in traditional operas wear resistant alloy material that melting has been got ready, comes out of the stove when chromium tungsten antifriction alloy molten metal reaches 1600 DEG C or so, pours
Enter to be plugged in the tooth head metal type dies of positioning wire, after chromium tungsten spoken parts in traditional operas antifriction alloy molten metal is cooling, obtains metal mold edge
(as shown in Fig. 2, the center of 4 end of tooth head is positioning wire 3, positioning wire 3 is during castingin for the tooth head 4 of casting pick
For fixing the position intracavitary in tooth head metal type dies type of tooth head 4, guarantee that tooth head 4 is in the center of type chamber) blank, it will
Tooth capillus base is warming up to 930 DEG C with the heating rate of 10 DEG C/min, keeps the temperature furnace cooling after 8h, removes tooth head surface using grinding wheel
Oxide layer.
Then the castingin mold of metal mold cast-in cutting pick is preheated to 150~200 DEG C, the positioning wire 3 of tooth head is inserted into
Center has in the cylindrical positioning device 5 of location hole, then positioning device 5 and tooth is first with the location hole for being put into castingin mold
In b6, the low-alloy steel material got ready using 75KW medium frequency induction melting furnace melting, when low-alloy steel molten metal reaches 1700
DEG C or so when come out of the stove, pour into preset tooth head and the castingin mold of positioning device, after molten metal is cooling, obtain metal mold edge
Cast pick blank.Pick blank is machined to standard pick size using lathe.Cylindrical positioning device 5 such as Fig. 3 (a) and Fig. 3
(b) shown in, positioning device 5 is placed in the indentation, there of castingin metal type dies bottom, and upper surface is recessed, by tooth head end when use
The positioning wire 3 in portion is inserted into location hole b6, for positioning to tooth head 4.Castingin mold such as Fig. 4 of metal mold cast-in cutting pick
It is shown, it is set in mold there are two type chamber, is put into positioning device 5 in the bottom of type chamber, tooth head 4 is inserted into the positioning of positioning device 5
In the b6 of hole, in castingin, tooth head 4 is in type chamber center.
Finally the pick processed is heat-treated.The pick processed is warming up to 930 DEG C, keeps the temperature 40min, pick
The tooth head position of front end use water as hardening media quenching, denticle position Cooling Quenching in air, when pick drops to room temperature
Afterwards, pick is warming up to 230 DEG C, keeps the temperature 3h furnace cooling, is tempered, after pick drops to room temperature, pick surface is sprayed
Sand processing, finally obtains metal mold castingin coal winning machine cutting bit, as shown in figure 5, tooth head 4 is wrapped in inside pick by denticle 7；Tooth head
4 ends is conical, and after castingin, 4 end of tooth head is fixed on inside denticle in up-side down triangle, work in metal mold cast-in cutting pick
When, tooth head 4 is because its structure from denticle without falling off in advance.
Shown in tooth head annealing process curve such as Fig. 6 (a), shown in the heat treatment cycle curve such as Fig. 6 (b) of pick head position, pick
Shown in denticle heat treatment cycle curve such as Fig. 6 (c).
Through detecting, the main component of tooth head 4 are as follows: C:2.64%, Cr:16.52%, Mo:2.45%, W:1.77%, Si:
1%, Cu:0.97%, Mn:1.63%；The main component of denticle 7 are as follows: C:0.29%, Mn:1.5%, Si:0.34%；Tooth head is flat
Equal hardness are as follows: 65.8HRC；Denticle average hardness are as follows: 43HRC；The impact flexibility of denticle are as follows: 106J/cm2。
Tooth head and denticle ingredient are all satisfied design ingredient, and the mechanical property of metal mold castingin coal winning machine cutting bit is above coal
Industry national standard.Tested through down-hole coal excavation, metal mold castingin coal winning machine cutting bit chromium tungsten spoken parts in traditional operas antifriction alloy tooth head there is no
It falls off, cut tooth losing efficiency is normal wear failure, and metal mold castingin coal winning machine cutting bit relatively soldering pick and cast-in cutting pick, service life are equal
It is improved.
Claims (3)
1. a kind of metal mold castingin coal winning machine cutting bit, which is characterized in that the metal mold castingin coal winning machine cutting bit is mainly by tooth
Head and denticle composition；The tooth head is cone, is formed by permanent mold casting, and the tooth head and denticle are inlayed by metal mold
Casting process is coupled, and tooth head is wrapped in inside by denticle；
The tooth head, material be chromium tungsten spoken parts in traditional operas antifriction alloy, main component are as follows: C:2.6~3.2%, Cr:15~18%, W:
1.5~3%, Mo:1.5~2.5%, Mn:1.2~1.7%, Si :≤1%, Cu:0.8~1%；
The denticle, material are low-alloy steel, main component are as follows: C:0.28~0.37%, Mn:1.5~2.0%, Si≤
0.4%.
2. a kind of manufacturing method of metal mold castingin coal winning machine cutting bit, which is characterized in that by chromium tungsten spoken parts in traditional operas antifriction alloy molten metal
It pours into the tooth head metal mold grinding tool with positioning wire, the tooth head with positioning wire is obtained after cooling, heat is carried out to tooth head
After processing, then the type of castingin mold that tooth head is preset in metal mold cast-in cutting pick by positioning device is intracavitary, low-alloy of casting
Steel metal liquid is processed pick by size requirement after cooling, is finally integrally heat-treated to pick again, and metal mold edge is finally obtained
Cast pick；It is specific as follows:
The tooth head with positioning wire prepares molding, tooth head metal type dies using the casting technique of permanent mold casting
It is by the positioning hole of the tooth head metal type dies of positioning wire insertion, chromium tungsten spoken parts in traditional operas is resistance to after 150~200 DEG C of preheating
Golden molten metal is merged to be cast in tooth head metal type dies, it is cooling；
Described is heat-treated tooth head, refers to tooth head being heated to 930~950 DEG C, keeps the temperature 5~10 hours, furnace cooling；
The type of the described castingin mold that tooth head is preset in metal mold cast-in cutting pick by positioning device is intracavitary, refers to castingin mold
After 150~200 DEG C of preheating, the recessed cylinder of location hole and upper surface is provided in the intracavitary pre-set central of the type of castingin mold
Shape positioning device, and by the positioning hole of the positioning wire of tooth head insertion positioning device, the end of tooth head and positioning device it is upper
Surface is in contact；
Described is integrally heat-treated pick, refers to pick being heated to 930 DEG C~950 DEG C, keeps the temperature 30min~40min, cuts
The tooth head position of tooth front end uses water as hardening media, remaining position natural cooling in atmospheric environment is cooled to pick
Tempering is carried out after room temperature, tempering temperature is 210 DEG C~230 DEG C, soaking time T > 2 hour, furnace cooling.
3. a kind of manufacturing method of metal mold castingin coal winning machine cutting bit according to claim 2, which is characterized in that described
The diameter of positioning wire is 1.5mm~2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910171626.1A CN109732062A (en) | 2019-03-07 | 2019-03-07 | Metal mold castingin coal winning machine cutting bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910171626.1A CN109732062A (en) | 2019-03-07 | 2019-03-07 | Metal mold castingin coal winning machine cutting bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109732062A true CN109732062A (en) | 2019-05-10 |
Family
ID=66369710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910171626.1A Withdrawn CN109732062A (en) | 2019-03-07 | 2019-03-07 | Metal mold castingin coal winning machine cutting bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109732062A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111360232A (en) * | 2020-04-07 | 2020-07-03 | 邵东智能制造技术研究院有限公司 | Manufacturing method of composite cutting pick and composite cutting pick |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3618198A1 (en) * | 1986-05-30 | 1987-12-03 | Werner Schatz | Method for the production of picks |
| CN1672834A (en) * | 2004-03-24 | 2005-09-28 | 汪召忠 | Casting method of pick with composite material |
| US20060272790A1 (en) * | 2005-05-31 | 2006-12-07 | Sandvik Intellectual Property Ab | Method for manufacturing a cutting pick and the resulting pick |
| CN1951627A (en) * | 2005-10-21 | 2007-04-25 | 郭继伟 | Process for producing chain pick |
| CN103357470A (en) * | 2013-06-17 | 2013-10-23 | 内蒙古五二特种材料工程技术研究中心 | Wear-resistant hammer head of hammer crusher and preparation method thereof |
| CN104047604A (en) * | 2014-06-10 | 2014-09-17 | 高建军 | Compound cutting pick and manufacturing method thereof |
| CN105195265A (en) * | 2015-10-28 | 2015-12-30 | 上海大学兴化特种不锈钢研究院 | Dual-compound wear-resisting hammer and manufacturing method thereof |
-
2019
- 2019-03-07 CN CN201910171626.1A patent/CN109732062A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3618198A1 (en) * | 1986-05-30 | 1987-12-03 | Werner Schatz | Method for the production of picks |
| CN1672834A (en) * | 2004-03-24 | 2005-09-28 | 汪召忠 | Casting method of pick with composite material |
| US20060272790A1 (en) * | 2005-05-31 | 2006-12-07 | Sandvik Intellectual Property Ab | Method for manufacturing a cutting pick and the resulting pick |
| CN1951627A (en) * | 2005-10-21 | 2007-04-25 | 郭继伟 | Process for producing chain pick |
| CN103357470A (en) * | 2013-06-17 | 2013-10-23 | 内蒙古五二特种材料工程技术研究中心 | Wear-resistant hammer head of hammer crusher and preparation method thereof |
| CN104047604A (en) * | 2014-06-10 | 2014-09-17 | 高建军 | Compound cutting pick and manufacturing method thereof |
| CN105195265A (en) * | 2015-10-28 | 2015-12-30 | 上海大学兴化特种不锈钢研究院 | Dual-compound wear-resisting hammer and manufacturing method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111360232A (en) * | 2020-04-07 | 2020-07-03 | 邵东智能制造技术研究院有限公司 | Manufacturing method of composite cutting pick and composite cutting pick |
| CN111360232B (en) * | 2020-04-07 | 2021-12-31 | 邵东智能制造技术研究院有限公司 | Manufacturing method of composite cutting pick and composite cutting pick |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0995876B1 (en) | Methods of manufacturing rotary drill bits | |
| CN105195265B (en) | Double composite wear-resistant hammerheads and its manufacturing method | |
| CN102861873B (en) | Casting method of gear | |
| CN105107576B (en) | A kind of board hammer of impact crusher and its manufacture method | |
| CN111468720B (en) | Method for manufacturing radial centralizing sliding bearing static ring | |
| CN109082509B (en) | Heat treatment method for manufacturing high-wind-pressure down-the-hole drill bit by using 40CrNi2MoV and down-the-hole drill bit | |
| CN105964912A (en) | Crankshaft casting technology | |
| CN102389962A (en) | Particle infiltration casting process for preparing hard alloy/steel laminated composite material | |
| CN101623922B (en) | Manufacturing technology of integral inner and outer inverted V-shaped or inner inverted V-shaped iron-based alloy inner bushing | |
| CN106086672A (en) | A kind of wear-resistant complex element alloy steel ball casting and manufacture method thereof | |
| CN103801429A (en) | Ultra-hard wear-resistance composite hammerhead for hammer crusher and production method thereof | |
| CN105039836A (en) | High-pressure roller mill cast-in roller surface and preparation method thereof | |
| CN108380850B (en) | Ceramic particle multi-scale reinforced metal matrix composite wear-resistant rake tooth head and preparation method thereof | |
| CN102126120B (en) | Method for producing upper and lower blades of edge cutting machine | |
| CN104611627B (en) | A kind of high boron wear-resisting composite hammer head and preparation method thereof | |
| CN109732062A (en) | Metal mold castingin coal winning machine cutting bit | |
| CN109759547B (en) | Excavator bucket tooth and manufacturing method thereof | |
| CN104070331A (en) | Method for manufacturing piston ring used for die casting device and piston ring | |
| CN1951627A (en) | Process for producing chain pick | |
| CN106244939B (en) | A kind of wear-resistant liner and preparation method thereof | |
| CN110280351A (en) | A kind of wear-resistant liner | |
| US4047514A (en) | Furnace taphole drilling bit | |
| CN208449507U (en) | A kind of liner plate of anticorrosive wear-resistant | |
| KR20020050455A (en) | Method for manufacturing bimetallic cast with superior wear resistance and toughness | |
| CN114309466B (en) | Casting method of alloy cast iron cylinder sleeve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190510 |
|
| WW01 | Invention patent application withdrawn after publication |