840 results about "Diamond tool" patented technology

Superabrasive tools and methods for the making thereof are disclosed and described. In one aspect, superabrasive particles are chemically bonded to a matrix support material according to a predetermined pattern by a braze alloy. The brazing alloy may be provided as a powder, thin sheet, or sheet of amorphous alloy. A template having a plurality of apertures arranged in a predetermined pattern may be used to place the superabrasive particles on a given substrate or matrix support material.

The invention relates to a super-precision trans-scale in-situ nanometer indentation marking test system which integrates driving, loading, detecting and micro-nanometer dynamic performance tests, super-precision marking processing and in-situ observation into a whole. The system mainly comprises an objective table, a regulation mechanism, a detection unit, a precise pressed-into driving unit, a detection unit of load signals and displacement signals and a high-resolution digital microscopic imaging system, wherein the objective table is precisely positioned along the directions of the X axis and the Y axis; the regulation mechanism and the precise pressed-into driving unit are in the direction of the Z axis and are assembled on a base; the high-resolution digital microscopic imaging system is used for observing the deforming and damaging conditions of the material in the storing and testing process; the objective table as well as the regulation mechanism and the precise pressed-into driving unit in the direction of the Z axis are assembled on a base; the high-resolution digital microscopic imaging system is arranged on the objective table; a precise dynamic sensor detecting the pressure of a diamond tool head pressed into a material and a sensor I detecting the precise displacement of the objective table in the directions of the X axis and the Y axis are arranged on the objective table; and a sensor II used for detecting the precise displacement of a diamond tool head in the direction of the Z axis of pressed-into depth is arranged on the base by a support I.

The invention relates to pre-alloying powder for a diamond tool and a manufacturing method thereof. The pre-alloying powder adopts Fe phase or Cu phase as the main phase. The pre-alloying powder is characterized in that: trace B strengthens crystal boundary and refines crystal particles; Ni, Co and Me (at least one of Mn, Cr, Si, Ti, V, W and Mo is selected) are adopted as strengthening elements; and Sn, P and C further adjusts an alloy structure. The pre-alloying powder is prepared by the high-pressure water atomization powdering technology. The manufacturing method is characterized in that: alloy liquid is smashed by high-pressure water which is preferential for many times, the meso-position diameter D50 of the powder measured by a laser particle-size meter is within 7 to 18mum, and the preference is within 7 to 13mum; the full oxygen content measured by a full oxygen analyzer is smaller than or equal to 0.35% (mass), and the preference is smaller than or equal to 0.25% (mass).

The present invention relates to a diamond tool and a method of manufacturing the same, wherein multiple abrasive layers are formed through a brazing or electroplating method, thereby improving the performance and service life of the tool. According to the method of the present invention, a plurality of concave portions are formed in a surface of the shank. A bonding paste is coated into the concave portions and abrasives are dispersed in the bonding paste to thereby form a lower abrasive layer. Again, a bonding material is coated on the lower abrasive layer and abrasives are dispersed in the bonding material to thereby form an upper abrasive layer. Then, a heat treatment is executed to fusion-bond the bonding material and abrasives onto the surface of the shank. Therefore, the diamond tools manufactured through a multiple brazing or electroplating method according to the invention can significantly extend the service life thereof, which has been a detrimental weakness of the conventional diamond tools having a single abrasive layer, in spite of various advantages of the brazing and electroplating methods. Furthermore, multiple abrasive layers can be formed inside the concave portions having a desired spacing, width and depth, thereby significantly improving the service life and the cutting performance of diamond tools.

The invention relates to a micron-nano scale in-situ nano indentation and scratching test system which integrates driving, precise loading and signal detection, micron-nano scale mechanics performance testing, ultraprecise scratching processing and high resolution in-situ observing as one. The system is mainly composed of a precise positioning platform at X-axis and Y-axis directions, a precise linear positioning platform at Z-axis direction, a precise indentation driving unit, a load signal and displacement signal detection unit and a high resolution digital microscopic imaging system for observing and storing material deformation and damage conditions in the test process. The precise positioning platform at the X-axis and Y-axis directions is assembled on a base, the precise linear positioning platform at the Z-axis direction is assembled on a side plate, the precise indentation driving unit, a precise mechanical sensor for detecting the indentation material pressure of a diamond tool head and a precise displacement sensor for detecting the indentation depth of the diamond tool head to along the Z-axis direction are assembled on the precise linear positioning platform at the Z-axis direction, and the high resolution digital microscopic imaging system is assembled on a beam.

The present invention provides a method for extending diamond tool life in diamond machining of materials that chemically react with the diamond tool in which the surface electric potential of the workpiece is adjusted or tuned to be adequate to inhibit the chemical reaction between the diamond tool and the workpiece during the diamond machining operation. As the chemical reaction is inhibited, the chemical wear rate of the diamond tool is reduced and diamond tool life is extended. The surface electric potential of the workpiece can be adjusted by electrically charging the workpiece. In one embodiment, conduction charging is used to adjust the surface electric potential of the workpiece to inhibit the chemical reaction between the diamond tool and the workpiece. In another embodiment, induction charging is used to adjust the surface electric potential of the workpiece to inhibit the chemical reaction between the diamond tool and the workpiece.

The present invention provides diamond tools, and methods for the formation thereof, using CVD techniques. In one aspect, a mold is provided which has an interface surface configured to inversely match a configuration intended for the working surface of a diamond layer in a tool. An adynamic diamond mass or layer is then deposited upon the diamond interface surface of the mold, and a support layer is joined to the growth surface of the adynamic diamond layer. At least a portion of the mold is then removed to expose the working surface of the diamond which has received a shape which inversely corresponds to the configuration of the mold's diamond interface surface.

The invention relates to a grinding tool, in particular to a brazing-hot pressing diamond tool. The diamond tool consists of a steel matrix and a diamond tool bit, wherein the diamond tool bit consists of a plurality of alloy layers which are vertical to a working surface of the tool bit; the alloy layers are prepared from two alloy matrixes with different formulas by a vacuum hot pressing method; a prearranged diamond abrasive particle layer is arranged inside each alloy matrix layer; outer layers on two sides of the tool bit are brazing alloy matrix layers (1); a single-layer prearranged diamond abrasive particle layer is arranged inside each brazing alloy matrix layer (1); an intermediate layer of the tool bit is a pre-alloying matrix layer (2); and a single-layer or multi-layer prearranged diamond abrasive particle layer is arranged inside the pre-alloying matrix layer (2). The brazing-hot pressing diamond tool solves the problem that a multi-layer brazing tool is covered by a thick solder layer so as to cause low exposure effect and also solves the problem that a sintered diamond tool is insufficient in diamond holding force so as to make the diamond fall off too early. Therefore, the service life of the diamond tool is greatly prolonged and the processing efficiency thereof is greatly improved.

The invention provides a precise laser processing method for a diamond tool. The method comprises the following steps that a diamond tool of which the cutting edge is not processed is selected, and the surface of the diamond tool is thoroughly cleaned with a cleaning solution; S2, the cleaned diamond tool is fixed to the surface of a workbench; S3, a three-dimensional dynamic focusing system used for conducting processing treatment on the diamond tool is adjusted, and pulse laser of the three-dimensional dynamic focusing system is focused on the surface of to-be-processed diamond; S4, rough cutting processing is conducted on the diamond tool through a high-power low-speed laser device; and S5, finish processing is conducted on the diamond tool with a low-power high-speed laser device according to the shape of the cutting edge. According to the diamond tool prepared through the method, the cutting edge cleanliness is high, the edge is clear, pollution to the environment is small, and the processing efficiency, the product yield and the automation controllability degree are high. Compared with other methods, the precise laser processing method has obvious advantages on the aspects of efficiency, cost, shape control and the like.

Devices and methods for hyperspectral and multispectral imaging are discussed. In particular, methods like mapping spectrometer systems, methods of use and fabrication are given. Generally speaking, an image mapping spectrometer includes an image mapping field unit, a spectral separation unit, and a selective imager. Image mapping spectrometers can be used for spectral imaging of optical samples. In some embodiments, the image-mapping field unit of the image-mapping spectrometer can be fabricated using surface-formed diamond tools.

The invention relates to a dry and wet dual-purpose laser welding diamond saw blade, and belongs to the technical field of diamond processing tools. The diamond saw blade comprises a circular base body which comprises a side circumferential surface located on the edge. A plurality of chip removal grooves extending in the circle center direction inwards are formed in the side circumferential surface at intervals. Diamond tool bits are formed between the chip removal grooves. The chip removal grooves include the first chip removal grooves and the second chip removal grooves, wherein the first chip removal grooves and the second chip removal grooves are formed at intervals. The diamond tool bits include the first diamond tool bits and the second diamond tool bits, wherein the first diamond tool bits and the second diamond tool bits are arranged at intervals. The cross sections of the first chip removal grooves are larger than those of the second chip removal grooves. The surfaces of the first diamond tool bits are planes. A plurality of protruding strips are arranged on the surfaces of the second diamond tool bits. Grooves are formed between the protruding strips. Chip removal and heat dissipation can be well conducted through the diamond saw blade in the cutting process, the good cutting performance can be kept under the condition of no cooling water grinding, and the purpose of conducting processing under extreme conditions is achieved for users.

The present invention relates to a kind of pre-alloyed powder and its application in making diamond tool. The pre-alloyed powder consists of at least two selected from Fe, Co, Cu and Ni as basic components, one or several of Mn, Ti, Sn, Mo, W and WC, and one or two of RE, such as La and Ce. It contains at most 80 % of Fe, at most 40 % of Co, at most 80 % of Cu, at most 40 % of Ni, at most 8 % of M and 0-5 % of RE, where, M is one or several of Mn, Ti, Sn, Mo, W and WC and RE is La and/or Ce. The pre-alloyed powder has also inevitable impurity. Scanning electronic microscope measurement shows that the pre-alloyed powder has basic particle size smaller than 15 micron and oxygen content not more than 2 %. The pre-alloyed powder is used as adhesive in making diamond tool.

The invention provides a diamond tool bit bottom surface grinding device, which belongs to the technical field of the operation. The problem that the traditional diamond tool bit bottom surface grinding has low production efficiency because of grinding by a common machine tool is solved. The diamond tool bit bottom surface grinding device comprises a rack, wherein the rack is provided with a first grinding mechanism, a transfer discrimination mechanism and a second grinding mechanism, wherein the first grinding mechanism can be used for grinding the certain end surface of a diamond tool bit into a bright surface; the transfer discrimination mechanism can be used for transferring out the diamond tool bit capable of grinding the certain end surface of the diamond tool bit into the bright surface, can be used for judging whether the bright surface is positioned on the bottom surface or a tool surface and enables the diamond tool bit to face to the same direction according to the judgment result; and the second grinding mechanism can be used for bearing the diamond tool bit with the same facing direction of the transfer discrimination mechanism and can be used for grinding the diamond tool bit bottom surface. The diamond tool bit bottom surface grinding device has the advantages of convenience in production, labor force saving, high automation degree and high efficiency. According to the test, the diamond tool bit bottom surface grinding device can be used for grinding ten diamond tool bit bottom surfaces in one minute.

A polycrystalline-diamond cutting element for a drill bit of a downhole tool. The cutting element includes a substrate and a diamond table bonded to the substrate. The diamond table includes a diamond filler with at least one leached polycrystalline diamond segment packed therein along at least one working surface thereof. The cutting element may be formed by positioning the diamond table on the substrate and bonding the diamond table onto the substrate such that the polycrystalline diamond segment is positioned along at least one working surface of the diamond table. A spark plasma sintering or double press operation may be used to bond the diamond table onto the substrate.

Superabrasive tools and methods for the making thereof are disclosed and described. In one aspect, superabrasive particles are chemically bonded to a matrix support material according to a predetermined pattern by a braze alloy. The brazing alloy may be provided as a powder, thin sheet, or sheet of amorphous alloy. A template having a plurality of apertures arranged in a predetermined pattern may be used to place the superabrasive particles on a given substrate or matrix support material.

Superabrasive tools and methods for the making thereof are disclosed and described. In one aspect, superabrasive particles are chemically bonded to a matrix support material according to a predetermined pattern by a braze alloy. The brazing alloy may be provided as a powder, thin sheet, or sheet of amorphous alloy. A template having a plurality of apertures arranged in a predetermined pattern may be used to place the superabrasive particles on a given substrate or matrix support material.

The invention provides a multilayer brazed diamond tool. The multilayer brazed diamond tool comprises a matrix and a multiple diamond composite layers combined with the surface of the matrix. The multiple diamond composite layers contain diamond particles, framework particles and alloy brazing filler. The diamond particles are disorderly distributed in the multiple diamond composite layers. According to the multilayer brazed diamond tool, the diamond composite layers of the tool contain the multiple layers of diamond particles, so that the service life can be prolonged; furthermore, each diamond composite layer contains a large amount of air holes, the air holes can store cooling liquid, contain chips, discharge chips, prevent burning damage and facilitate diamond exposure, and therefore the diamond tool is continuously sharp; besides, combination between the alloy brazing filler and the diamond is firm, the brazing filler is completely alloyed, so that the uniformity is good, and the performance consistency is high; in addition, the manufacturing technology of the multilayer brazed diamond tool is simple and free of limitation of the dimension and shape of the diamond tool.

The invention relates to a bimetal powder of copper and nickel and a preparation method thereof. The invention solves the defect of easy oxidation of the simple substance nanometer copper powder and improves the use effect of the ordinary copper nickel composite powder. Referring to the prior art, the invention firstly prepares a nanometer copper powder, the copper powder is stirred and dispersed homogeneously in the water, and suspension liquid of the copper powder is prepared; the suspension liquid of the copper powder is blended with the nickel sulfate solution comprising macromolecule protective agent and special copper coordination agent thiourea so as to cause a replacement reaction between nickel ion and the copper; surfaces of the ultrafine copper particles are partly or all coated with the nickel, thus forming the core-shell copper-nickel bimetal nanometer powder. The bimetal powder can be taken as lubricant, lubricating grease extreme pressure-antiwear additives, additives in powder metallurgy, or as porous materials, antibacterial materials, antifouling coatings, conductive materials, magnetic materials, self-lubricating materials, antifriction materials, diamond tools, and raw materials or additives of electrical carbon products.

The present invention relates to a method of uniformly distributing abrasive grits on grinding tools. It can be applied in the cutting, grinding segments of diamond tools, which are typically used in cutting and drilling various hard and fragile materials, such as granite, marble, concrete, asphalt, etc. The present invention provides a template, the template designed based on the arranging requirement of abrasive particles such as diamond grits. The template can adsorb only a single layer of abrasive particles and is then placed onto a sheet, where the diamond grits are pressed into the sheet, with the diamond grits distributed uniformly on the sheet.

The invention relates to a diamond cutting grinding piece. The diamond cutting grinding piece comprises a diamond cutting grinding piece body arranged on a substrate, wherein the diamond cutting grinding piece body is evenly distributed in the circumferential direction, and corrugated water channels which are beneficial to heat dissipation and chip removal in the process of grinding are formed in the surface of the diamond cutting grinding piece body. The diamond cutting grinding piece organically combines the cutting performance and grinding performance through the unique design, is simple and reliable in structure, convenient to operate, low in manufacturing cost and long in service life, solves the problem that the cutting performance and the grinding performance of a diamond tool are independent from each other in an existing market, and is particularly applicable to cutting and grinding of building materials such as stones, concrete, ceramics, bricks and tiles.

The invention discloses a preparation method for modified superfine low-oxygen water-atomized alloy powder used for a diamond tool. The alloy matrix powder for a tool bit of the diamond tool can be manufactured through the method. The preparation method has the characteristics that the alloy powder is modified by adding multiple strengthening elements and the bending strength of a sintered matrix is improved at the same time; the superfine-grained alloy powder is manufactured through an ultrahigh-pressure water atomization technology, the alloy powder sintering compaction is lowered while the composition uniformity of single powder; the low-oxygen-content alloy powder is obtained through control over a smelting technique and a reduction technique, and the compactness of the sintered matrix is improved.

The invention provides a method for manufacturing a diamond tool with self-lubrication function. The method comprises the following steps: adding graphite particles with lubrication function into Ni-Cr alloy, wherein the graphite particles account for 2 to 20 percent of the total mass of the whole brazing filler metal; uniformly stirring mixture of the Ni-Cr alloy and the graphite particles to together form the brazing filler metal of a braze welding diamond tool; manufacturing a molded blank of the diamond tool according to a sequence of diamond tool metal substrate, the brazing filler metal and the diamond abrasive particles; putting the molded blank of the diamond tool into a heating furnace, adopting the brazing process, wherein the heating temperature is between 900 and 1,100 DEG C, the temperature is preserved for 1 to 20 minutes to ensure that the Ni-Cr alloy performs chemical reactions with the graphite particles and the diamond abrasive particles respectively to manufacture the diamond tool with the self lubrication function. The method can effectively improve the use performance, the lubrication effect and the scrap storage capability of the diamond tool to ensure that the diamond tool has higher grinding efficiency.

The invention relates to a method for brazing a diamond tool through lasers with the assistance of ultrasonic waves. The method includes the steps that firstly, a base body of a grinding wheel is manufactured through a machining method; secondly, the surface of the base body of the grinding wheel is coated with a brazing material; thirdly, diamond grinding particles are cleaned through dilute sulfuric acid, rinsed with deionized water and then dried; fourthly, the diamond grinding particles are subjected to laser surface texturing treatment through laser beams; fifthly, a diamond grinding wheel forming workblank is manufactured; sixthly, the surfaces of the diamond grinding particles are subjected to oil removal treatment and dust removal treatment; seventhly, the grinding wheel forming workblank is heated in a heating furnace, and the temperature is kept; and eighthly, the heated grinding wheel forming workblank is brazed through the lasers with the assistance of the ultrasonic waves, and a brazed single-layer diamond grinding wheel is manufactured. According to the method, release of stress between the diamond grinding particles and the brazing material is facilitated by the adoption of heating and heat preservation, meanwhile, the diamond grinding particles not too closely combined can fall off spontaneously after the high-temperature heat preservation process is conducted, and therefore potential defects generated after welding can be prevented.