CN105619272B - A kind of production method of laser Furnace Brazing of Diamond Grinding Wheel With Ni - Google Patents
A kind of production method of laser Furnace Brazing of Diamond Grinding Wheel With Ni Download PDFInfo
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- CN105619272B CN105619272B CN201610014651.5A CN201610014651A CN105619272B CN 105619272 B CN105619272 B CN 105619272B CN 201610014651 A CN201610014651 A CN 201610014651A CN 105619272 B CN105619272 B CN 105619272B
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- diamond
- solder
- grinding wheel
- laser
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
- B24D18/009—Tools not otherwise provided for
-
- 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
- B23K1/005—Soldering by means of radiant energy
- B23K1/0056—Soldering by means of radiant energy soldering by means of beams, e.g. lasers, E.B.
-
- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/302—Cu as the principal constituent
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Manufacturing & Machinery (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The present invention relates to a kind of methods for being brazed mono-layer diamond tool, belong to tool made of superhard material production field.Using NiCrBSi, CuPSn, TiH2Mixing is as solder, TiH therein2Real-time decomposition goes out H in the heating process of laser2Avoid diamond graphitization during high temperature brazing, therefore it is suitable to be brazed in air with laser beam, it can realize that the high intensity of diamond and steel matrix connects, postwelding forms a thin layer carbide on the surface of diamond, Cu bases solder is smaller to the thermal damage of diamond, available for the making for realizing small lot, large dimond instrument.A variety of alloying solders are mixed, and significantly reduce the cost of solder, and ingredient regulation and control are convenient, and diamond tool is made to be adapted to the processing request of different operating modes and material.
Description
Technical field
The invention belongs to diamond tool production field more particularly to the manufacturing technologies of soldering mono-layer diamond tool.
Background technology
At present, mostly using diamond tool in terms of hard brittle material is processed, wherein soldering mono-layer diamond tool has mill
Grain holds intensity height, abrasive material exposure is high, instrument is sharp and the excellent specific properties such as abrasive material effective rate of utilization height, long lifespan, has extensively
Application.In addition, soldering processes are substantially pollution-free to environment, therefore, brazed diamond tool is regarded as plating tool extensively
Optimal regeneration product.
Soldering uses more contains active element（Such as Cr, Ti, V, W）Ni, Ag, Cu based alloy solder, alloying solder
Have many advantages, such as that ingredient is uniform, fusing point is relatively low, but be brazed mono-layer diamond tool mostly using powdered filler metal, powdery alloy solder
It needs alloy melting first and then is atomized, need protective atmosphere in the fabrication process, therefore not only cost of manufacture is high, but also exist
Ingredient not easy-regulating the shortcomings that, the use scope of diamond tool is wider, and different machined materials and working condition are to instrument
Performance has different requirements, and therefore, brazed diamond tool is to the fusing point of solder, ingredient, the requirement of wearability and normal solder
It has differences, there is its diversity and particularity.
NiCrBSi brazing filler metals have the characteristics that hardness is high, wearability is good, are that current soldering mono-layer diamond tool industry should
With widest solder.The solder brazing temperature is higher, Ni therein be it is a kind of promote diamond graphitization element, have compared with
High intensity and hardness, therefore the high temperature of brazing process easily leads to diamond graphitization, postwelding diamond residual stress is larger, most
Cause diamond thermal damage larger eventually.In addition, such instrument cut and be ground granite, stone material, ceramics when hard brittle materials when,
The abrasion of NiCrBSi solders is slower so that instrument is passivated, i.e., self-sharpening is poor, influences work efficiency.And if lived using Cu bases
Property solder carry out diamond tool soldering, diamond thermal damage, and the easily real-time exposure of abrasive particle in instrument use can be reduced,
But its intensity is sometimes relatively low.It can thus be seen that Ni bases have preferable complementarity with Cu bases solder to soldering diamond, and
Cu can be with infinitely dissolve with Ni elements.
The production of the big instrument of small lot, size is easily achieved using laser soldering, but diamond carries out pricker in air
During weldering, since the presence of oxygen causes diamond particles that serious graphitization will occur, the mechanical performance of diamond is reduced, makes diamond
Life tools reduce or even can not use, therefore laser soldering needs to be protected using protective atmosphere more, not only increases into
This, and reduce production efficiency.Further, since the solder that diamond brazing uses contains active element Cr or Ti more, therefore
High vacuum degree is needed during the solder of such alloying is prepared, and needs atomization of dusting, ingredient also compares fixation,
It is inconvenient that its ingredient is regulated and controled.
The present invention significantly reduces the cost of solder, and ingredient using in proportion a variety of alloying solders are mixed
Regulation and control are convenient.
The content of the invention
The present invention is using the appropriate TiH of addition2A variety of powdery alloy solders mix carry out laser soldering, in laser
In rapid heating process, TiH2During by 550 ~ 730 DEG C, H can be decomposited in time2It is aoxidized to avoid active element and diamond
Graphitization, and Ti elements can increase wetability of the solder to diamond.
In order to reduce brazing temperature, the thermal damage of diamond is reduced, using NiCrBSi, CuPSn, TiH2Mixing is as pricker
Material, the fusing point of CuPSn only has 650-700 DEG C, reduces the fusing point of solder, and the Cr in NiCrBSi can increase as active element
Strong solder is to the wetability of diamond, a small amount of TiH2Two H atoms are decomposited in heating process and combine generation H2After gas, volume
It can expand, therefore diamond can be avoided to be graphitized the oxidation with Cr in air.
A kind of production method of new Furnace Brazing of Diamond Grinding Wheel With Ni provided by the invention, comprises the following steps：
（1）Skive matrix required for being prepared using mach method, and to matrix degreasing and rust removal.
（2）It is more than NiCrBSi, CuPSn, TiH of mass ratio 99.9% using purity2, the composition of mass percent is：
NiCrBSi is 15 ~ 25%；CuPSn is 70 ~ 80%； TiH2For 2 ~ 5%, carry out being mixed and made into composite soldering in proportion.Wherein
The mass percentage composition of NiCrBSi alloyed powders is：C is 0.6-1.2%, Cr 12-15%, B 2.5-4.5%, Si 3-
4.5%, Ni are 75 ~ 81%.The wherein mass percentage composition of CuPSn is：P is 5-6%, Sn 2-3%, Cu 91-93%.
（3）Composite soldering with pressure sensitive adhesive with 1: 2.3 ~ 2.8 weight ratio is uniformly mixed, solder slurries are made.
（4）Coating：Diamond grain particle size is 120 ~ 450 μm, and uniformly coating is fixed on emery wheel base steel body surface to solder slurries
Face, the solder slurries thickness of coating are the 95-125% of diamond abrasive grain average grain diameter.
（5）It is skive metallic matrix, the order system that middle level is solder slurries, upper strata is diamond abrasive grain by bottom
Make instrument molded blank.
（6）Brazing filler metal melts are heated to using laser, the power of laser is 870 ~ 1030W, and sweep speed is 50 ~ 65mm/
Min, facula area are 16 ~ 25mm2.Brazing temperature is 980 ~ 1020 DEG C, and diamond abrasive is fixed on grinding wheel base body table after cooling
Face is finished product.Need to use gas hood in heating process by remaining H2It takes away in time, gas hood power is 0.5 ~ 1.5kW.
Beneficial effects of the present invention：
（1）The process of the present invention can realize the soldering of diamond in air, eliminate protective cover, therefore not only
Cost is reduced, and can realize the quick manufacture of large-size instrument.
（2）The Cu base solders that the present invention uses, active element Cr, avoiding a large amount of Ni elements in solder causes diamond
Graphitization, reduce the thermal damage of diamond, and the ingredient of composite soldering can be in a certain range appropriate regulation, to adapt to
Different processing requests.
Specific embodiment
Embodiment 1
（1）The matrix of skive required for being prepared using mach method, selects 65Mn steel as grinding wheel base body,
And to matrix degreasing and rust removal.
（2）It is more than NiCrBSi, CuPSn, TiH of mass ratio 99.9% using purity2, the composition of mass percent is：
NiCrBSi is 20%；CuPSn is 75%； TiH2For 5%, carry out being mixed and made into composite soldering in proportion.Wherein NiCrBSi is closed
The quality percentage composition of bronze is：C is 0.6-1.2%, Cr 12-15%, B 2.5-4.5%, Si 3-4.5%, Ni for 75 ~
81%.The quality percentage composition of wherein CuPSn is：P is 5-6%, Sn 2-3%, Cu 91-93%.
（3）Composite soldering with pressure sensitive adhesive with 1: 2.5 weight ratio is uniformly mixed, solder slurries are made.
（4）Coating：Diamond grit is 280 ~ 320 μm, and uniformly coating is fixed on emery wheel steel matrix surface to solder slurries, applies
The solder slurries thickness covered is the 100% of diamond abrasive grain average grain diameter.
（5）It is skive metallic matrix, the order system that middle level is solder slurries, upper strata is diamond abrasive grain by bottom
Make instrument molded blank.
（6）Brazing filler metal melts are heated to using laser, the power of laser is 1010W, sweep speed 55mm/min, hot spot face
Product is 20mm2.1020 DEG C of brazing temperature, it is finished product that diamond abrasive, which is fixed on grinding wheel base body surface, after cooling.Heated
It needs to take remaining H2 in time away using gas hood in journey, gas hood power is 1kW.
The result shows that the carbide for having Cr at the diamond interface of brazed abrasive wheel is formed, solder is improved to diamond
Wetability, due to Cu and Ni infinitely dissolves, solder ingredient is uniform, which there is diamond abrasive grain to hold intensity height, thermal damage
The characteristics of small.
Embodiment 2
（1）The matrix of skive, selects 45 steel as grinding wheel base body required for being prepared using mach method, and
To matrix degreasing and rust removal.
（2）It is more than NiCrBSi, CuPSn, TiH of mass ratio 99.9% using purity2, the composition of mass percent is：
NiCrBSi is 25%；CuPSn is 70%； TiH2For 5%, carry out being mixed and made into composite soldering in proportion.Wherein NiCrBSi is closed
The quality percentage composition of bronze is：C is 0.6-1.2%, Cr 12-15%, B 2.5-4.5%, Si 3-4.5%, Ni for 75 ~
81%.The quality percentage composition of wherein CuPSn is：P is 5-6%, Sn 2-3%, Cu 91-93%.
（3）Composite soldering with pressure sensitive adhesive with 1: 2.6 weight ratio is uniformly mixed, solder slurries are made.
（4）Coating：Diamond grit is 120 ~ 150 μm, and uniformly coating is fixed on emery wheel steel matrix surface to solder slurries, applies
The solder slurries thickness covered is the 95% of diamond abrasive grain average grain diameter.
（5）It is skive metallic matrix, the order system that middle level is solder slurries, upper strata is diamond abrasive grain by bottom
Make instrument molded blank.
（6）Brazing filler metal melts are heated to using laser, the power of laser is 900W, sweep speed 50mm/min, hot spot face
Product is 16mm2.980 DEG C of brazing temperature, it is finished product that diamond abrasive, which is fixed on grinding wheel base body surface, after cooling.In heating process
In need remaining H using gas hood2It takes away in time, gas hood power is 0.8kW.
The result shows that the technique is easily manufactured, the shape and size of emery wheel are almost unrestricted, solder even tissue, sand
Wheel has the characteristics that diamond abrasive grain holding intensity is high, thermal damage is small.
Embodiment 3
（1）The matrix of skive, selects 45 steel as grinding wheel base body required for being prepared using mach method, and
To matrix degreasing and rust removal.
（2）It is more than NiCrBSi, CuPSn, TiH of mass ratio 99.9% using purity2, the composition of mass percent is：
NiCrBSi is 18%；CuPSn is 80%； TiH2For 2%, carry out being mixed and made into composite soldering in proportion.Wherein NiCrBSi is closed
The quality percentage composition of bronze is：C is 0.6-1.2%, Cr 12-15%, B 2.5-4.5%, Si 3-4.5%, Ni for 75 ~
81%.The quality percentage composition of wherein CuPSn is：P is 5-6%, Sn 2-3%, Cu 91-93%.
（3）Composite soldering with pressure sensitive adhesive with 1: 2.3 weight ratio is uniformly mixed, solder slurries are made.
（4）Coating：Diamond grit is 280 ~ 320 μm, and uniformly coating is fixed on emery wheel steel matrix surface to solder slurries, applies
The solder slurries thickness covered is the 95% of diamond abrasive grain average grain diameter.
（5）It is skive metallic matrix, the order system that middle level is solder slurries, upper strata is diamond abrasive grain by bottom
Make instrument molded blank.
（6）Brazing filler metal melts are heated to using laser, the power of laser is 1030W, sweep speed 65mm/min, hot spot face
Product is 18mm2.1020 DEG C of brazing temperature, it is finished product that diamond abrasive, which is fixed on grinding wheel base body surface, after cooling.Heated
Need to use gas hood in journey by remaining H2It takes away in time, gas hood power is 1.5kW.
The result shows that the solder even tissue, can realize soldering, diamond graphitization degree is relatively low, sand in air
Wheel has the characteristics that diamond abrasive grain holding intensity is high, thermal damage is small.
Claims (4)
1. a kind of production method of laser Furnace Brazing of Diamond Grinding Wheel With Ni, which is characterized in that the production method includes following
Processing step：
Step 1: the making of grinding wheel base body：Skive matrix required for being prepared using mach method, and to emery wheel base
Body degreasing and rust removal；
Step 2: solder makes：It is more than NiCrBSi, CuPSn, TiH of mass ratio 99.9% using purity2It is mixed and made into compound pricker
Material, ratio press the TiH of CuPSn, 2-5% of 15 ~ 25% NiCrBSi, 70-80%2, the wherein quality hundred of NiCrBSi alloyed powders
Divide and be than composition：C is 0.6-1.2%, Cr 12-15%, B 2.5-4.5%, Si 3-4.5%, Ni 75-81%；Wherein CuPSn
Mass percentage composition be：P is 5-6%, Sn 2-3%, Cu 91-93%；
Step 3: solder slurries make：Composite soldering and pressure sensitive adhesive are mixed and made into solder slurries by weight proportion；
Step 4: coating：Solder slurries mix in proportion coating with diamond abrasive grain and are fixed on grinding wheel base body surface；
Step 5: it is skive matrix by bottom, the sequentially built work that middle level is solder slurries, upper strata is diamond abrasive grain
Has molded blank；
Step 6: being heated to brazing filler metal melts using laser, the power of laser is 870 ~ 1030 W, and sweep speed is 50 ~ 65 mm/
Min, facula area are 16 ~ 25 mm2；The temperature of soldering is 980 ~ 1020 DEG C；Diamond abrasive grain is fixed on grinding wheel base body after cooling
Surface is finished product；Need to use gas hood in heating process by the H of decomposition2It takes away in time.
2. the production method of laser Furnace Brazing of Diamond Grinding Wheel With Ni according to claim 1, it is characterised in that：The pricker
Slurry liquid is uniformly mixed with 1: 2.3 ~ 2.8 weight ratio with pressure sensitive adhesive by composite soldering and is made.
3. the production method of laser Furnace Brazing of Diamond Grinding Wheel With Ni according to claim 1, it is characterised in that：The gold
The granularity of hard rock abrasive particle is 120 ~ 450 μm, and the solder slurries thickness of coating is the 95-125% of diamond abrasive grain average grain diameter.
4. the production method of laser Furnace Brazing of Diamond Grinding Wheel With Ni according to claim 1, it is characterised in that：The gas hood
Power is 0.5 ~ 1.5kW.
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106346169B (en) * | 2016-11-14 | 2018-08-21 | 江苏科技大学 | Paste solder, preparation method and the application of diamond are brazed in air |
| CN106976023B (en) * | 2017-03-31 | 2018-12-07 | 苏州科技大学 | A kind of method of induction heating high-entropy alloy Furnace Brazing of Diamond Grinding Wheel With Ni |
| CN106863158B (en) * | 2017-03-31 | 2018-12-07 | 苏州科技大学 | A kind of method of vacuum brazing cubic boron nitride abrasive wheel |
| CN108972387B (en) * | 2018-06-26 | 2020-09-08 | 苏州科技大学 | Preparation method of induction brazing single-layer diamond grinding wheel |
| CN108993686A (en) * | 2018-07-18 | 2018-12-14 | 仲恺农业工程学院 | Hammer mills and preparation method thereof |
| CN109623681A (en) * | 2018-12-21 | 2019-04-16 | 华侨大学 | A kind of preparation process of brazed diamond tool |
| CN112621582A (en) * | 2020-12-10 | 2021-04-09 | 苏州戴蒙得精密工具有限公司 | Diamond roller sintering forming process for dressing grinding wheel |
| CN115502501A (en) * | 2022-10-25 | 2022-12-23 | 苏州科技大学 | Method for vacuum brazing of diamond abrasive particles by copper-based brazing filler metal |
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| CN101914768A (en) * | 2010-08-18 | 2010-12-15 | 丹阳华昌工具制造有限公司 | Method for manufacturing abrasive wheels for high-speed railway track slabs by brazing diamonds with laser |
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Effective date of registration: 20191126 Address after: Qidong City Huilong town Nanyuan road 226299 Jiangsu city of Nantong province No. 1168 Patentee after: Qidong Lanwei Diamond Technology Co.,Ltd. Address before: 226299 No. 202 Heping South Road, Huilong Town, Qidong City, Jiangsu Province Patentee before: Qidong Blue Diamond Products Co.,Ltd. |