CN85100341B - Technology for rolling impact of carbide surface - Google Patents
Technology for rolling impact of carbide surface Download PDFInfo
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- CN85100341B CN85100341B CN85100341A CN85100341A CN85100341B CN 85100341 B CN85100341 B CN 85100341B CN 85100341 A CN85100341 A CN 85100341A CN 85100341 A CN85100341 A CN 85100341A CN 85100341 B CN85100341 B CN 85100341B
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- alloy
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- hard alloy
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- polishing
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- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
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Abstract
The present invention relates to a technology for the rolling impact of hard alloy surfaces, which belongs to the field of the after-treatment of the sintering surfaces of hard alloy. In the technology for the rolling impact of hard alloy surfaces, the grainy hard alloy with different shapes and the hardness of larger than 86 HRA is used as an impact body under the condition of the existence of suitable polishing quality and a suitable polishing agent, the surface densification of the alloy is achieved in a scrolling impact device, and 100% of alloy surfaces reach 8 to 9 stages of smoothness after a polishing process is carried out for 4 to 5 hours. More than 98% of surfaces do not have low power visible pores and surface micro cracks, a wanting edge part naturally forms a fillet arc with r equal to 0.3 millimeter, and compared with the rock drilling service life of alloy without the treatment of the surfaces, the rock drilling service life of the hard alloy is enhanced by 1.5 times. The surface treating quantity of the technology for the rolling impact of hard alloy surfaces is about 25 kilograms by one treating device every day.
Description
The invention belongs to post processing field, sintering cemented carbide surface.
Because carbide alloy material itself is hard and crisp, its main component tungsten carbide is also harder than used most of abrasive material in the emery wheel, and it is very difficult to carry out the sintered surface post processing.Yet, the content of rock drilling Carbide Cobalt unavoidably will become the destruction source of alloy in using along with progressively reducing (2.5～4%) (weight) surface pore, hole, micro-crack etc.On the other hand because the developing rapidly of heavy hydraulic rock drill, require to bear rock drilling globular tooth madding with alloy spherical tooth drill bit that large impact energy uses also develop rapidly inserted technology by welding to cold embedding, hot embedding development.Cold embedding and hot embedding technology have strict requirement to cooperating between alloy and the steel body, just can guarantee the enough power of holding tightly.Therefore, require alloy to have higher surface quality, its quality index comprises surface smoothness, dimensional tolerance porosity and micro-crack distribution etc.Still do not have at present a kind of rapid batch and handle the method on sintering cemented carbide surface.Nineteen eighty-two (English) Kenny thinks JA Bu Luosi work " world's carbide alloy guide and handbook (third edition), about " fine finishining and other sintering postprocessing working procedures " (the 71 47 page of this book is by the printing and publishing of the limited service company of Jelspeed) and method that in March, 1979, Britain scholar MAnthony proposed the surperficial post processing of sintering cemented carbide in " producing of tungstenic material " is first employing Carborundum wheel grinding or electric machining, further finish grind to remove the surface damage that roughing causes with diamond dust then, processing at last comprises the multistage polishing that reaches very high bright degree.The author thinks that this method is very bothersome.
The seventies, the vibration finishing technology develops very fast at home and abroad.It can process the surface of workpiece such as ferrous metal, non-ferrous metal even plastic products.But this method is handled inapplicable to carbide surface.
The object of the present invention is to provide a kind of fast, the low cobalt ore of efficient polishing with the method for carbide surface to reach defectives such as elimination alloy surface hole, hole and micro-crack, satisfy the needs of inserted tooth technology to improve surface smoothness, and then improve carbide alloy service life.
Characteristics of the present invention are by means of the carbide alloy impact body polished deposits yields rolling impact to be realized the finishing polish face of polished thing under the situation that has polishing matter, polishing agent to exist.The rolling impact device is seen accompanying drawing.Polished carbide alloy 1 places in the tourelle cylinder 2, and when cylinder drove the generation gyration by motor 3, polished goods were subjected to the continuous impact of carbide alloy impact body 4, finally obtain finishing polish face.Polishing matter is with 0.024 millimeter chrome green or boron carbide powder; Polishing agent is an industrial alcohol; The rotating speed of cylinder is 50～7000(rev/min), its L/D ratio is 2: 1, volume 20～60 liters; Impact body hardness is HRA86～91, and its substance is less than the cemented carbide body of polished goods, and it is shaped as multiple shape (comprising prismatic, taper, ellipse and sphere etc.), and collocation is used as required.The power of motor is 3～4 kilowatts.
To be carbide button that grinding (joining the Carborundum wheel grinding with coreless grinding machine) is good with 2: 5 ratio preparation impact body pack into procedure of the present invention is fills up to about 2～3 of cylinder volume in the cylinder and then " polishing matter adds polishing agent " is injected to seal through rolling impact in cylinder and can shut down taking-up in 4 to 9 hours; wash, wipe and do oven dry (being lower than 40 ℃) with alcohol, just obtain qualified polishing product.
Techno-economic effect of the present invention: compare with method of the present invention (calling method 2 in the following text) with above-mentioned method (calling method 1 in the following text):
Can be found out by top artwork: method 1 is more than five processes, and complicated operation requires exquisite technology, and the single treatment amount is few, mostly is heavy hand labour.2 two procedures of method, simple to operate, do not need exquisite technology, no 25 kilograms heavy of the hand labour single device dailys output or more only need cheap equipment, and the maintenance of equipment amount is few.The carbide surface of handling by method 2 can reach
8～
9 grades surface smoothness.(preserving light does not for a long time subtract) eliminated 98% above alloy surface hole and micro-crack again.Go back the transition arc that nature forms γ=0.* millimeter simultaneously.Inlay into the spherical tooth drill bit of 48 millimeters of diameters by the surface-treated alloy, in f=14～thin rock of 16 silicon matter, use the heavy hydraulic rock drill of 25 kilogram-metres, than there not being the surface-treated alloy to improve 1.5 times service life.
Embodiment one: with 2 liter stainless steel cylinders, the carbide alloy of 10 * 16 millimeters of 2 kilograms of φ of grinding is mixed for 5 kilograms with multiple shape (comprising prismatic, taper, ellipse and sphere etc.) the carbide alloy impact body that substance is different, its hardness is HRA86～91, is advisable with 40～70% of filling cylinder volume in the cylinder of packing into then.Inject polishing matter and add polishing agent, be advisable for 5～6 millimeters to expose surface in kind.Seal through polishing in 4～5 hours.100% alloy surface reaches as a result
8～
9 grades of fineness 98% above alloys do not exist low power visible pores and face crack to go back the transition circle cambered surface that nature forms γ=0.3 millimeter simultaneously provides necessary spigot surface for inserted tooth.
Embodiment two: handle 8 millimeters of good high 14 millimeters thick of grinding on the basis of embodiment one, long 15 millimeters sheet alloy obtains effect same.
Embodiment three: on the basis of embodiment one, adjust the weight ratio of goods and impact body, the surface treatment of the different sheet mine hard alloy of substance has been reached effect same.
Suitably match size and the rotating speed of device and the ratio of goods and impact body of impact body, the surface treatment that above-mentioned technology is used for WC-TiC-Co class alloy can obtain close result.
Claims (4)
1, a kind of carbide surface treatment process method is characterized in that grinding crossed and wants polished carbide alloy and carbide alloy impact body, adds in the lump with polishing matter, polishing agent and turns round the rolling impact polishing in the cylinder.
2, process according to claim 1, it is characterized in that the carbide alloy impact body has multiple shape, its substance is less than the substance of polished thing, its hardness is HRA86～91, the ratio of putting of filling out of impact body and polished thing is 5: 2, the length-to-diameter of cylinder is 2: 1, and the rotating speed of cylinder is 50～70 rev/mins.
3, process according to claim 1 is characterized in that polishing agent is an industrial alcohol, and polishing matter is chrome green powder or boron carbide powder.
4, process according to claim 2 is characterized in that the rolling impact of whole technical process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85100341A CN85100341B (en) | 1985-04-01 | 1985-04-01 | Technology for rolling impact of carbide surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85100341A CN85100341B (en) | 1985-04-01 | 1985-04-01 | Technology for rolling impact of carbide surface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85100341A CN85100341A (en) | 1986-08-20 |
| CN85100341B true CN85100341B (en) | 1988-09-07 |
Family
ID=4791078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN85100341A Expired CN85100341B (en) | 1985-04-01 | 1985-04-01 | Technology for rolling impact of carbide surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85100341B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100393905C (en) * | 2006-04-03 | 2008-06-11 | 自贡硬质合金有限责任公司 | Vacuum heat treatment method for hard alloy for drilling |
| GB0717849D0 (en) * | 2007-09-13 | 2007-10-24 | Vibraglaz Uk Ltd | Finishing medium and process |
| CN108608304A (en) * | 2016-12-12 | 2018-10-02 | 中国航空工业标准件制造有限责任公司 | A kind of corrosion proof method of raising iron-base superalloy fastener products |
| CN107570710B (en) * | 2017-08-18 | 2019-06-28 | 武汉新锐合金工具有限公司 | A kind of method of granulating of extra coarse grain hard alloy |
| CN107932197B (en) * | 2017-11-27 | 2019-09-17 | 宁波中和汽配有限公司 | Needle roller polishing process |
| CN108161370B (en) * | 2018-02-06 | 2020-05-22 | 青岛恒鑫传动有限公司 | Chain production process and pin shaft fillet machining device applied to same |
| CN109623623B (en) * | 2019-01-14 | 2021-03-02 | 椿中岛机械(太仓)有限公司 | Method for processing glass ball for optical connection suitable for IT and communication industry |
| CN110202439A (en) * | 2019-07-04 | 2019-09-06 | 安徽莱恩电泵有限公司 | A kind of arrangement for grinding can be improved impeller channel smoothness |
| CN114589552A (en) * | 2022-03-16 | 2022-06-07 | 株洲肯特硬质合金股份有限公司 | Surface passivation method for hard alloy spherical teeth |
-
1985
- 1985-04-01 CN CN85100341A patent/CN85100341B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN85100341A (en) | 1986-08-20 |
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