CN203004081U - Gang saw tool bit for cutting granite - Google Patents
Gang saw tool bit for cutting granite Download PDFInfo
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- CN203004081U CN203004081U CN 201220582249 CN201220582249U CN203004081U CN 203004081 U CN203004081 U CN 203004081U CN 201220582249 CN201220582249 CN 201220582249 CN 201220582249 U CN201220582249 U CN 201220582249U CN 203004081 U CN203004081 U CN 203004081U
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- tool bit
- cutting
- cutter head
- granite
- gang saw
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Abstract
The utility model discloses a gang saw tool bit for cutting granite. The gang saw tool bit for cutting the granite comprises a tool bit body and a welding transition body, wherein the welding transition body is composed of metal binding agents which are sintered together. A hard abrasion resistant phrase is arranged on the outer surface of a combined body of the tool bit body and the welding transition body. Through the arrangement of the welding transition body, the problem of welding quality due to the large difference of metal compositions of the tool bit body and a steel belt is solved. The tool bit body is enabled to obtain firm cutting promotion power. Due to the arrangement of the hard abrasion resistant phrase, the abrasion resistant performance of the surface of the tool bit body is greatly improved, inner layer carcass metal is prevented from being abraded, a stable continuous cutting process is ensured, and accordingly mechanical holding force of the metal binding agents to diamond grains is effectively enhanced, machining efficiency on tools is improved and the service life is prolonged. In the forming process of the hard abrasion resistant phrase, the mechanical holding force of the diamond grains and the metal binding agents inside the tool bit body is greatly enhanced, and requirements on cutting the granite are met.
Description
Technical field
The utility model relates to a kind of gang saw tool bit of manufacturing by sintering, relate generally to can cutting granite gang saw tool bit.The manufacture method that also relates to this gang saw tool bit.
Background technology
Granite, rock matter is hard closely knit, belongs to the hard stone material, is usually used in the senior building fitting-out work.At present, processing granite small dimension sheet material all adopts circular saw processing, and the large-sized plates material needs the even rope saw processing of sand saw, the shortcoming of circular saw processing granite plates is that joint-cutting is wide, waste a large amount of building stones, because the restriction of circular saw self size can't be cut the granite building material on larger plane; Sand saw and rope saw can be processed the large-sized plates material, but efficiency is low, energy consumption is high, and seriously polluted, and particularly rope is sawn into this very high (only having in the world external several is using).And gang saw is because steel band is thinner, can save stone material more than 20%, and stone slab and the cost that can cut larger plane are low, people attempt to adopt gang saw to process granite building material always, worldwide also do not have up to now the technology of gang saw cutting granite be found or disclose.
Gang saw can not cutting granite one of technical problem be that the solder bond face of gang saw tool bit and steel band is less, the metal ingredient difference of gang saw tool bit and steel band is larger, the cutting force that weldquality after welding and weld size bear gang saw tool bit is less, and cutting force slightly gang mill cutter head will come off.
Gang saw can not cutting granite technical problem two be because the restriction of gang saw steel band, the relative circular saw cutter head of gang saw tool bit requires thinner, thereby shapeless one-tenth overcomes the cutting force of granite hardness, diamond abrasive grain is too many, and the hold deficiency of cutter head carcass to diamond abrasive grain, can cause diamond abrasive grain to come off too early, at all can't cutting granite, and diamond abrasive grain is very little, make again the cutter head life-span extremely short, its cutting efficiency is not accepted by market.
Gang saw can not cutting granite technical problem three be because gang saw tool bit is thinner, joint-cutting is narrower, side surface can be worn and produce heat in the cutting granite process, make gang saw tool bit become thinner, the cutter head carcass reduces the hold of diamond abrasive grain simultaneously, cutting power descends greatly, makes equally gang saw can't meet the requirement of cutting granite.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of firm welding, case hardness is high, the Granite-cutting gang saw tool bit that wearability is strong.
For solving the problems of the technologies described above, the technical solution of the utility model is: the Granite-cutting gang saw tool bit, comprise the cutter head body, the end face of described cutter head body is provided with the welding transition body be sintered together with described cutter head body, and the combination outer surface after described cutter head body and described welding transition body sintering is provided with the hard, wear-resistant phase.
As a kind of preferred technical scheme, described hard, wear-resistant is that carburized layer, nitriding layer or strong carbon, nitride forming element react the hard wear-resistant layer formed with metallic bond mutually.
As to improvement of the technical scheme, described cutter head body comprises at least two laminates that be arranged in parallel and be sintered together.
Owing to having adopted technique scheme, the Granite-cutting gang saw tool bit, comprise the cutter head body, the end face of described cutter head body is provided with the welding transition body be sintered together with described cutter head body, and the combination outer surface after described cutter head body and described welding transition body sintering is provided with the hard, wear-resistant phase; The setting of welding transition body, overcome the problems of welded quality that the metal ingredient difference of cutter head body and steel band causes more greatly, makes the cutter head body obtain firm smear metal motive force; The setting of hard, wear-resistant phase, increased substantially the wearability of cutter head body surface, protection internal layer carcass metal is not frayed, maintain the cutter head gauge, ensure continuous cutting process stably, the enhancing of cutter head heat-resisting oxidation-resistance, the metallic bond burning that can effectively avoid a large amount of frictional heats because producing in process to cause was lost efficacy, thereby effectively strengthened the mechanical hold of metallic bond to diamond abrasive grain, improved working (machining) efficiency and the service life of instrument; In forming hard, wear-resistant phase process, the mechanical hold of cutter head body interior diamond abrasive grain and metallic bond strengthens greatly, has met the requirement of cutting granite.
the accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the structural representation of the utility model embodiment gang saw;
In figure: 1-cutter head body; The 11-lamination; 2-welding transition body; 3-hard, wear-resistant phase; The 4-steel band.
The specific embodiment
Below in conjunction with drawings and Examples, further set forth the utility model.In the following detailed description, only by the mode of explanation, some example embodiment of the present utility model has been described.Undoubtedly, those of ordinary skill in the art can recognize, in the situation that do not depart from spirit and scope of the present utility model, can to described embodiment, be revised by various mode.Therefore, accompanying drawing is illustrative with being described in essence, rather than for limiting the protection domain of claim.
As shown in Figure 1, the Granite-cutting gang saw tool bit, comprise cutter head body 1, the end face of described cutter head body 1 is provided with the welding transition body 2 be sintered together with described cutter head body 1, described cutter head body 1 comprises metallic bond and the diamond abrasive grain be sintered together, the metallic bond of described welding transition body 2 for being sintered together, the basic ingredient system of described metallic bond is the combination of element more than three kinds in Fe-Ni-Co-Cu-Sn-Zn, and the metal dust of described metallic bond is above pre-alloyed powder and/or elemental metals powder of binary.The volume by volume concentration of wherein said diamond abrasive grain in described cutter head body 1 is 10%～80%.
Combination outer surface after described cutter head body 1 and described welding transition body 2 sintering is provided with hard, wear-resistant phase 3.Described hard, wear-resistant phase 3 is that carburized layer, nitriding layer or carbide react the hard wear-resistant layer formed with metallic bond.Wherein, described carbide is one or more the combination in Fe, Al, Mg, Ag, Cr, W, V, Si and Ti, and the hard wear-resistant layer generated after reaction is cementite hard wear-resistant layer (Fe3C), aluminium carbide hard wear-resistant layer (Al4C3), magnesium carbide hard wear-resistant layer (MgC2), silver carbide hard wear-resistant layer (AgC), chrome carbide hard wearing layer (C2Cr3), tungsten carbide hard wear-resistant layer (WC), vanadium carbide hard wear-resistant layer (CHV), carborundum hard wear-resistant layer (SiC) or titanium carbide hard wear-resistant layer (TiC).During use, described welding transition body 2 and the hard, wear-resistant of gang saw steel bar solder side 3 are ground off mutually, can be welded on the gang saw steel bar.
In the present embodiment, described cutter head body 1 comprises six laminates 11 that be arranged in parallel and be sintered together.The lamination 11 of other quantity can be set certainly as required, not depart from purport of the present utility model.
Below illustrate the manufacture method of Granite-cutting with gang saw tool bit.
Method one:
Step 1: metallic bond and diamond abrasive grain are mixed in proportion, then mixed-powder is colded pressing in mould and make the base substrate of cutter head body 1, cold pressing in mould with metallic bond and make the base substrate of welding transition body 2, will after the assembling of the base substrate of the base substrate of cutter head body 1 and welding transition body 2, put into hot pressed sintering mould sinter molding; The temperature of hot pressed sintering is 600 ℃-1100 ℃, and pressure is 20Kg.f/cm
2-100Kg.f/cm
2;
Step 2: in high temperature service, cutter head is carried out to case-carbonizing/nitriding and process, the combination outer surface after described cutter head body 1 and described welding transition body 2 sintering forms has certain thickness hard metal carbide/nitride; The temperature of carburizing is 600 ℃-1100 ℃, and the temperature of nitriding is 600 ℃-1100 ℃;
method two:
Step 1: to the carbide that adds one or more combinations in Fe, Al, Mg, Ag, Cr, W, V, Si and Ti in metallic bond; The volume by volume concentration of carbide and metallic bond is 0.2%～60%;
Step 2: by metallic bond, the mixture of diamond abrasive grain and carbide mixes in proportion, then mixed-powder is colded pressing in mould and make the base substrate of cutter head body 1, cold pressing in mould with metallic bond and make the base substrate of welding transition body 2, to after the assembling of the base substrate of the base substrate of cutter head body 1 and welding transition body 2, put into hot pressed sintering mould sinter molding, in sintering process, described carbide reacts with the composition of metallic bond, combination outer surface after described cutter head body 1 and described welding transition body 2 sintering forms has certain thickness hard, wear-resistant phase 3, the temperature of hot pressed sintering is 600 ℃-1100 ℃, and pressure is 20Kg.f/cm
2-100Kg.f/cm
2.
The utility model gang saw tool bit has possessed following outstanding advantages:
Below in conjunction with experimental data, technique effect of the present utility model is described further.
Article 80, granite gang saw cutting experiment data are as follows:
Steel band: (length) 4300mm * (wide) 180mm * (thick) 3.0mm; Cutter head: (length) 22/18mm * (height) 9.5mm * (thick) 4.0/4.5mm (trapezoidal); 28 cutter heads of every steel band welding, fill 80 of gang saws altogether.As shown in Figure 2, steel band is the 65Mn steel, every 28 cutter heads.
Experiment producer: Wulian County, shandong Province state Shi Ye of heap of stone Co., Ltd.
Experimental facilities: 80 steel band gang saws that plant equipment Co., Ltd produces are contained in Fujian, Shanghai.
Experiment material: Wulian County, shandong Province " Wulian is red " granite (numbering-G368).
Stone material character: the red essential mineral composition in Wulian and physical property: one: potassic feldspar, plagioclase, quartz, hornblend and a small amount of biotite.Two: chemical composition SiO
2-68.28%, Al
2o
3-14.81%, Fe
2o
3-1.78%, CaO-2.19%, MgO-1.30%, K
2o-4.95 %, Na
2o-3.62%.Three, physical property: mean compressive strength 1400-2400Kg/cm2, average rupture strength: 130-140 Kg/cm2 wearability: 0.6 g/cm2, water absorption rate: 0.36%, acidproof rate: 96.5%, alkaline-resisting rate: 98.42%, hardness: 7.4 grades of Mohs, proportion: 2.65g/cm3.
Waste gauge lattice: (length) 2600mm * (wide) 1000mm * (height) 1200mm.
The cutter head parameter: cutter head metallic bond composition system is defined as Fe-Ni-Cu-Sn-Zn, the application that is mixed of elemental metals powder and pre-alloyed powder, the diamond body volume concentrations be 20%(wherein, granularity 40/45(HWD60) account for 60%, granularity 45/50(HWD40) account for 40%).Employing method one, by diamond with after the metallic bond powder mixes, be placed in graphite jig and carry out hot pressed sintering, pass through hot pressure reaction, under certain temperature and pressure condition, graphite is reacted with the Fe in cutter head, at the outer surface of finished product cutter head, form the Fe that discontinuous distribution, thickness are about 0.2mm
3the C hard wear-resistant layer, hardness is HRB116.Adopt method two of the present utility model, also can realize forming at the cutter head outer surface hard, wear-resistant phase 4 of different structure.
The sawing condition: wet cutting, the power of motor of gang saw is 100KW, and Speed of Reaction Wheels is 90r/min, and the gang saw linear velocity is 72m/min.With this understanding, the downward cutting speed of this gang saw can reach 7 cm/h, and single cut thickness 1.2m changes cutter head after accumulative total cutting thickness 12 m.Be no more than ± 1mm of cuts sheet material flatness, plate face smoothness is good, can directly be ground, polishing.And gang saw tool bit both domestic and external is tested granite or can't be cut, or maximum cutting 0.6m can not cut or tool bit abrasion is complete.And sand saw maximum cutting rate 2cm/h, and the cutting saw kerf is 8～10mm.The plate surface evenness is poor, and coarse injustice, need to carry out surely thickly can being ground, polishing.(and the granite rope of mentioning in book saw just has two large-stone factories to use in Italy, but because cost is high, cost performance is low, has substantially all stopped now use).
From above-mentioned cutting situation relatively, gang saw tool bit of the present utility model is all breaking than other like product the space record that the granite gang saw cuts aspect sharpness and service life, more outstanding: because the cutter head outer surface has wear-resisting hard phase, in cutting process, cutter head thickness is substantially constant, the width of slit of slabstone changes little, the machining accuracy of slabstone obviously improves, the remain ± 0.5mm of processing dimension error of finished product sheet material.
Claims (1)
1. Granite-cutting gang saw tool bit, comprise the cutter head body, it is characterized in that: the end face of described cutter head body is provided with the welding transition body be sintered together with described cutter head body, and the combination outer surface after described cutter head body and described welding transition body sintering is provided with the hard, wear-resistant phase.
2. Granite-cutting gang saw tool bit as claimed in claim 1 is characterized in that: described hard, wear-resistant is carburized layer, nitriding layer, cementite hard wear-resistant layer, aluminium carbide hard wear-resistant layer, magnesium carbide hard wear-resistant layer, silver carbide hard wear-resistant layer, chrome carbide hard wearing layer, tungsten carbide hard wear-resistant layer, vanadium carbide hard wear-resistant layer, carborundum hard wear-resistant layer or titanium carbide hard wear-resistant layer mutually.
3. Granite-cutting gang saw tool bit as claimed in claim 1 or 2, it is characterized in that: described cutter head body comprises at least two laminates that be arranged in parallel and be sintered together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220582249 CN203004081U (en) | 2012-11-07 | 2012-11-07 | Gang saw tool bit for cutting granite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220582249 CN203004081U (en) | 2012-11-07 | 2012-11-07 | Gang saw tool bit for cutting granite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203004081U true CN203004081U (en) | 2013-06-19 |
Family
ID=48595712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220582249 Expired - Fee Related CN203004081U (en) | 2012-11-07 | 2012-11-07 | Gang saw tool bit for cutting granite |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203004081U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104525859A (en) * | 2014-11-18 | 2015-04-22 | 西安理工大学 | Crushing wall and rolling mortar wall, and respective production methods thereof |
| CN104525862A (en) * | 2014-11-18 | 2015-04-22 | 西安理工大学 | Cyclone and production method thereof |
-
2012
- 2012-11-07 CN CN 201220582249 patent/CN203004081U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104525859A (en) * | 2014-11-18 | 2015-04-22 | 西安理工大学 | Crushing wall and rolling mortar wall, and respective production methods thereof |
| CN104525862A (en) * | 2014-11-18 | 2015-04-22 | 西安理工大学 | Cyclone and production method thereof |
| CN104525862B (en) * | 2014-11-18 | 2016-11-30 | 西安理工大学 | cyclone and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20161107 |