CN102172900A - Method for manufacturing ballastless plate grinding wheel - Google Patents
Method for manufacturing ballastless plate grinding wheel Download PDFInfo
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- CN102172900A CN102172900A CN2010106059284A CN201010605928A CN102172900A CN 102172900 A CN102172900 A CN 102172900A CN 2010106059284 A CN2010106059284 A CN 2010106059284A CN 201010605928 A CN201010605928 A CN 201010605928A CN 102172900 A CN102172900 A CN 102172900A
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Abstract
The invention belongs to the field of machining and manufacturing tools for grinding, polishing or cutter grinding, and particularly relates to a method for manufacturing a ballastless plate grinding wheel. The ballastless plate grinding wheel consists of a steel substrate, a brazing alloy and a diamond, wherein the brazing alloy comprises the following components in percentage by weight: 10-20 percent of Si, 10-20 percent of Cr, 10-20 percent of Fe, 2-8 percent of Co, 0.5-10 percent of WC, and the balance of Ni, the melting point is 950 DEG C, metal powder is mixed evenly and WC is added for being mixed evenly, a layer of abrasive is coated on the working surface of the grinding wheel, the brazing alloy powder is sprayed on the abrasive surface, then diamond abrasive grains of 30-50 meshes are sprayed, the using amount of the brazing alloy is 2-4 times of that of the diamond, then the mixture is put in a vacuum furnace for heating and sintering through five sections, and finally the grinding wheel is finished by being cooled along the furnace to the room temperature. For the ballastless plate grinding wheel manufactured by the method, the binding strength of the diamond and the substrate is high, the diamond is not easy to fall after being stressed; and the diamond has small thermal damage, is not easy to be crushed and has long service life.
Description
Technical field
The invention belongs to the tool processes manufacturing field that grinding, polishing or sharpening are used, be specifically related to a kind of manufacture method of the no tiny fragments of stone, coal, etc. plate emery wheel of polishing.
Background technology
No tiny fragments of stone, coal, etc. plate is 6.45 meters of block lengths being used for non-fragment orbit, high 20 centimetres, 9.6 tons the concrete support rail platform of weighing, and the length error of each piece all is strictly controlled in 3 millimeters.In fact, every block of 10 blocks of sleepers that no tiny fragments of stone, coal, etc. plate just is equivalent to fuse.After no tiny fragments of stone, coal, etc. plate was all laid and finished, rail just directly was fixed on the no tiny fragments of stone, coal, etc. plate.Have tiny fragments of stone, coal, etc. track to compare with common, circuit ride comfort, stability, security that no tiny fragments of stone, coal, etc. plate is laid are all improved a lot, thereby satisfy the needs that train is run at high speed, and can also obviously reduce the dry sound that train driving produces simultaneously.
No tiny fragments of stone, coal, etc. plate emery wheel is the important specific purpose tool that fragment-free track slab is polished, and its performance and quality have decisive influence to the final mass of no tiny fragments of stone, coal, etc. plate.Electroplating technology is all adopted in general no tiny fragments of stone, coal, etc. plate emery wheel production now both at home and abroad, electroplating technology is by electro-deposition diamond to be fixed on matrix surface, the just combination of machinery between the two, diamond exposes highly low, a little less than the bond strength, in course of work chip removal difficulty, sharpness is low, and diamond is stressed to come off easily; Life tools are short, and the quantity of every pair of no tiny fragments of stone, coal, etc. plate of emery wheel polishing is about 150.
The eighties of last century late nineteen eighties, people begin to explore soldering tech and are used for the diamond tool making.Adopt diamond surface to apply some transition element (as Ti, Cr, W etc.), and form carbide on the surface with its generation chemical reaction.By the effect of this layer carbide, diamond, bond, matrix three just can realize firm chemical metallurgy combination by soldering, thereby realize diamond surface metallization, the principle of Here it is diamond brazing.As can be seen, the soldering flux that is used for diamond brazing at present mainly adopts nickel, chromium, boron, silicon or metal or alloy such as tin and nickel from the patent delivered and article; For example: soldering flux among the Chinese invention patent ZL01129563.5 " nickel base hard brazing alloy " adopts the brazing alloy of nickeliferous, chromium, boron, silicon, the alloy that Chinese invention patent ZL200710102635.2 " copper of stanniferous and nickel-phosphorus brazing alloy " adopts is a 4.8-7.5wt% phosphorus, 0.2-7.0wt% tin, the copper of 0.2-6.0wt% nickel and surplus.Adopt above-mentioned bond can realize chemical bond between braze metal and the fertile material-diamond-steel matrix, these brazing alloys have good wellability; But above-mentioned soldering flux all has fragility, and bond strength is lower, and the soldering that is not suitable for the emery wheel abrading block of this big specification is made.
Summary of the invention
The object of the present invention is to provide the manufacture method of a kind of big emery wheel (the steel matrix external diameter of emery wheel is greater than 300mm, less than 1000mm), particularly a kind of manufacture method of not having tiny fragments of stone, coal, etc. plate emery wheel.This method has realized diamond, brazing alloy, the firm chemical metallurgy combination of steel matrix three, and its brazing temperature is carried out with interior at 1100 ℃ under vacuum protection, with the distortion that prevents steel matrix and the reduction of diamond properties; Brazing alloy soaks into diamond to 1/3 height uniformly, and the external diameter tolerance of product is controlled on short transverse ± 0.1mm, thereby guarantees adamantine effective use.
To achieve these goals, the invention provides following technical scheme:
A kind of manufacture method of not having tiny fragments of stone, coal, etc. plate emery wheel comprises the steps:
1) preparation of brazing alloy powder: the brazing alloy powder is according to the preparation of following mass percent: Si:10-20, Cr:10-20, Fe:10-20, Co:2-8, WC:0.5-10, all the other are Ni; This powder size is the 100-300 order;
2) cloth: smear last layer glue on the emery wheel working face, above-mentioned brazing alloy powder is sprinkled upon Jiao Mianshang, spill 30-50 purpose diamond abrasive grain subsequently, brazing alloy powder consumption is 2-4 times (weight ratio) of diamond abrasive grain consumption;
3) soldering sintering under the vacuum protection: diamond abrasive grain and steel matrix are put into vacuum drying oven soldering sintering under the effect of brazing alloy; sintering temperature at 1100 ℃ with interior temperature-gradient method sintering; make brazing alloy can soak into diamond to 1/3 height uniformly, guarantee that the external diameter tolerance of product is controlled on short transverse ± the 0.1mm scope in.
Described brazing alloy powder is made up of basic powder and WC powder, and WC wherein prepares the back at basic powder and adds mixing.
The granularity of WC is less than or equal to basic powder size in the described brazing alloy powder.
The composition of described glue is WS-120 glue 20-30%, isopropyl alcohol 40-60%, acetone 10-20% (percentage by weight).
30-40 purpose diamond abrasive grain and 100-200 purpose brazing alloy powder match; 40-50 purpose diamond abrasive grain and 200-300 purpose brazing alloy powder match.
Sintering furnace vacuum is 10
-3-10
-2Mpa.
The sintering process of described no tiny fragments of stone, coal, etc. plate emery wheel is: the no tiny fragments of stone, coal, etc. plate emery wheel of good diamond abrasive grain of cloth and brazing alloy powder is put into vacuum sintering furnace, and sintering furnace vacuum remains on 10
-3-10
-2Mpa is divided into 5 sections to sintering temperature, the 1st section: be heated to 600-800 ℃, heating-up time 1-3 hour, be incubated 20-60 minute; The 2nd section: be warming up to 700-900 ℃, heating-up time 1-3 hour, be incubated 20-60 minute; The 3rd section: be warming up to 800-950 ℃, heating-up time 20-60 minute, be incubated 20-60 minute; The 4th section: be warming up to 950-1000 ℃, heating-up time 20-60 minute, be incubated 20-60 minute; The 5th section: be warming up to 1000-1050 ℃, heating-up time 20-60 minute, be incubated 20-60 minute; Slowly cool to 500 ℃ with stove at last, logical nitrogen continues to be cooled to room temperature and comes out of the stove.
The steel matrix external diameter of described no tiny fragments of stone, coal, etc. plate emery wheel is greater than 300mm, less than 1000mm.
Compared with prior art, a kind of manufacture method of not having tiny fragments of stone, coal, etc. plate emery wheel provided by the invention has added a large amount of Fe, Co, Cr in the brazing alloy that uses, and makes that brazing alloy begins for 950 ℃ to melt, 1015 basic thawings fully.Iron (Fe) is better to adamantine wellability, and cost is low, and cobalt (Co) can form metallurgical connection effect with diamond interface, improves durability of diamond; Chromium (Cr) can reduce the fusing point of bond, adds a spot of tungsten carbide (WC) in addition in brazing alloy, can prevent to trickle arbitrarily after cored solder from high temperature dissolving, and makes cored solder can soak into diamond to 1/3 height uniformly.To sum up, beneficial effect of the present invention is: a kind of employed brazing alloy of manufacture method that does not have tiny fragments of stone, coal, etc. plate emery wheel provided by the invention has that fusing point is low, intensity is high, corrode is little and erosion-resisting advantage; By restriction, guarantee that the external diameter tolerance of product is controlled at ± 0.1mm on short transverse to cored solder and diamond particles granularity.Because whole brazing process carries out under vacuum protection, the diamond fire damage is little, diamond and substrate combinating strength height, the stressed difficult fragmentation of use diamond, long service life.
Description of drawings
Fig. 1 is the structural representation of the present invention's one specific embodiment.
Reference numeral
1 steel matrix
2 diamonds
The specific embodiment
Introduce the embodiment of the invention below in conjunction with accompanying drawing:
As shown in the figure, the invention provides a kind of manufacture method of not having tiny fragments of stone, coal, etc. plate emery wheel, no tiny fragments of stone, coal, etc. plate emery wheel wherein comprises steel matrix, brazing alloy and diamond, and its concrete manufacturing step is as follows:
Embodiment 1
1) making of brazing alloy: brazing alloy is prepared according to following mass percent: Si:10%, Cr:8%, Fe:5%, Co:3%, Ni:69%, WC:5%, 200 orders mix with thin WC with thin brazing alloy and 300 orders together, and wherein WC prepares back adding mixing at basic powder;
2) cloth: stickingly equably on the matrix working face be coated with gluing, spill brazing alloy at Jiao Mianshang subsequently, at last at brazing filler metal alloy surface cloth last layer diamond, diamond consumption control W ± 1g, the brazing alloy consumption is 3 a times＜weight ratio of diamond consumption 〉;
3) soldering sintering under the vacuum protection: the no tiny fragments of stone, coal, etc. plate emery wheel of good diamond of cloth and brazing alloy is put into vacuum sintering furnace, and sintering furnace vacuum remains on 10
-3-10
-2Mpa; Sintering temperature is divided into 5 sections.The 1st section: be heated to 700 ℃, 2 hours heating-up times, be incubated 30 minutes; The 2nd section: be warming up to 850 ℃, 2 hours heating-up times, be incubated 30 minutes; The 3rd section: be warming up to 920 ℃, 30 minutes heating-up times, be incubated 30 minutes; The 4th section: be warming up to 1020 ℃, 30 minutes heating-up times, be incubated 40 minutes; The 5th section: be warming up to 1050 ℃, heating-up time 20-60 minute, be incubated 20-60 minute; Slowly cool to 500 ℃ with stove at last, logical nitrogen continues to be cooled to room temperature and comes out of the stove.
1) making of brazing alloy: brazing alloy is prepared according to following mass percent: Si:20%, Cr:10%, Fe:15%, Co:5%, Ni:45%, WC:5%, 100-200 purpose brazing alloy and 200 purpose WC mix together, and wherein WC prepares back adding mixing at basic powder;
2) cloth: stickingly equably on the matrix working face be coated with gluing, spill brazing alloy at Jiao Mianshang subsequently, brazing filler metal alloy surface cloth last layer diamond, diamond consumption control W ± 1g, the brazing alloy consumption is 2 a times＜weight ratio of diamond consumption 〉;
3) soldering sintering under the vacuum protection: the no tiny fragments of stone, coal, etc. plate emery wheel of good diamond of cloth and brazing alloy is put into vacuum sintering furnace, and sintering furnace vacuum remains on 10
-3-10
-2Mpa; Sintering temperature is divided into 5 sections.The 1st section: be heated to 600 ℃, 2 hours heating-up times, be incubated 30 minutes; The 2nd section: be warming up to 800 ℃, 2 hours heating-up times, be incubated 40 minutes; The 3rd section: be warming up to 900 ℃, 40 minutes heating-up times, be incubated 30 minutes; The 4th section: be warming up to 950 ℃, 30 minutes heating-up times, be incubated 40 minutes; The 5th section: be warming up to 1000 ℃, heating-up time 20-60 minute, be incubated 20-60 minute; Slowly cool to 500 ℃ of logical nitrogen with stove at last and continue cooling, come out of the stove to room temperature.。
Being noted that at last the above embodiments are the present invention for convenience of description, is not in order to limit the scope of the invention.All equivalences of doing according to the present patent application claim and description change and modify, and all should still belong in the scope that patent of the present invention contains.
Claims (8)
1. a manufacture method of not having tiny fragments of stone, coal, etc. plate emery wheel is characterized in that: comprise the steps:
1) preparation of brazing alloy powder: the brazing alloy powder is according to the preparation of following mass percent: Si:10-20, Cr:10-20, Fe:10-20, Co:2-8, WC:0.5-10, all the other are Ni; This powder size is the 100-300 order;
2) cloth: smear last layer glue on the emery wheel working face, above-mentioned brazing alloy powder is sprinkled upon Jiao Mianshang, spill 30-50 purpose diamond abrasive grain subsequently, brazing alloy powder consumption is 2-4 times (weight ratio) of diamond abrasive grain consumption;
3) soldering sintering under the vacuum protection: diamond abrasive grain and steel matrix are put into vacuum drying oven soldering sintering under the effect of brazing alloy; sintering temperature at 1100 ℃ with interior temperature-gradient method sintering; make brazing alloy can soak into diamond to 1/3 height uniformly, guarantee that the external diameter tolerance of product is controlled on short transverse ± the 0.1mm scope in.
2. manufacture method as claimed in claim 1 is characterized in that: described brazing alloy powder is made up of basic powder and WC powder, and WC wherein prepares the back at basic powder and adds mixing.
3. manufacture method as claimed in claim 1 is characterized in that: the granularity of WC is less than or equal to basic powder size in the described brazing alloy powder.
4. manufacture method as claimed in claim 1 is characterized in that: the composition of described glue is WS-120 glue 20-30%, isopropyl alcohol 40-60%, acetone 10-20% (percentage by weight).
5. manufacture method as claimed in claim 1 is characterized in that: 30-40 purpose diamond abrasive grain and 100-200 purpose brazing alloy powder match; 40-50 purpose diamond abrasive grain and 200-300 purpose brazing alloy powder match.
6. manufacture method as claimed in claim 1 is characterized in that: sintering furnace vacuum is 10
-3-10
-2Mpa.
7. manufacture method as claimed in claim 1 is characterized in that: the sintering process of described no tiny fragments of stone, coal, etc. plate emery wheel is: the no tiny fragments of stone, coal, etc. plate emery wheel of good diamond abrasive grain of cloth and brazing alloy powder is put into vacuum sintering furnace, and sintering furnace vacuum remains on 10
-3-10
-2Mpa is divided into 5 sections to sintering temperature, the 1st section: be heated to 600-800 ℃, heating-up time 1-3 hour, be incubated 20-60 minute; The 2nd section: be warming up to 700-900 ℃, heating-up time 1-3 hour, be incubated 20-60 minute; The 3rd section: be warming up to 800-950 ℃, heating-up time 20-60 minute, be incubated 20-60 minute; The 4th section: be warming up to 950-1000 ℃, heating-up time 20-60 minute, be incubated 20-60 minute; The 5th section: be warming up to 1000-1050 ℃, heating-up time 20-60 minute, be incubated 20-60 minute; Slowly cool to 500 ℃ with stove at last, logical nitrogen continues to be cooled to room temperature and comes out of the stove.
8. manufacture method as claimed in claim 1 is characterized in that: the steel matrix external diameter of described no tiny fragments of stone, coal, etc. plate emery wheel is greater than 300mm, less than 1000mm.
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|---|---|---|---|
| CN 201010605928 CN102172900B (en) | 2010-12-15 | 2010-12-15 | Method for manufacturing ballastless plate grinding wheel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010605928 CN102172900B (en) | 2010-12-15 | 2010-12-15 | Method for manufacturing ballastless plate grinding wheel |
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| CN102172900B CN102172900B (en) | 2013-01-09 |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102896591A (en) * | 2012-09-21 | 2013-01-30 | 南京航空航天大学 | Material distributing device and material distributing method of grinding wheel of brass solder diamond high speed rail plate |
| US20130059510A1 (en) * | 2011-09-07 | 2013-03-07 | Ehwa Diamond Industrial Co., Ltd. | Brazing bond type diamond tool with excellent cuttability and method of manufacturing the same |
| CN106881671A (en) * | 2017-02-24 | 2017-06-23 | 蓝思科技（长沙）有限公司 | A kind of multi-layered brazing diamond tool and preparation method thereof |
| US9694512B2 (en) | 2011-09-07 | 2017-07-04 | Ehwa Diamond Industrial Co., Ltd. | Brazing bond type diamond tool with excellent cuttability and method of manufacturing the same |
| CN108161778A (en) * | 2017-12-27 | 2018-06-15 | 汕头大学 | A kind of diamond grinding head and its preparation process |
| CN108161776A (en) * | 2017-12-19 | 2018-06-15 | 南京航空航天大学 | It is brazed diamond segment composite wheel |
| CN108687681A (en) * | 2018-04-25 | 2018-10-23 | 汕头大学 | A kind of diamond disk and its preparation process |
| CN109623681A (en) * | 2018-12-21 | 2019-04-16 | 华侨大学 | A kind of preparation process of brazed diamond tool |
| CN110202497A (en) * | 2019-07-04 | 2019-09-06 | 南京固华机电科技有限公司 | Diamond fuses the production method of superhard emery wheel |
| CN110202496A (en) * | 2019-07-04 | 2019-09-06 | 南京固华机电科技有限公司 | The production method of superhard mill is fused applied to abrasive machine diamond |
| CN110303438A (en) * | 2019-07-04 | 2019-10-08 | 南京固华机电科技有限公司 | High-strength diamond fuses the production method of superhard cutting sheet |
| CN110315442A (en) * | 2019-07-04 | 2019-10-11 | 南京固华机电科技有限公司 | Diamond fuses the production method of superhard bistrique |
| CN111941299A (en) * | 2020-07-29 | 2020-11-17 | 南京三超新材料股份有限公司 | Method for manufacturing ceramic grinding teeth |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130059510A1 (en) * | 2011-09-07 | 2013-03-07 | Ehwa Diamond Industrial Co., Ltd. | Brazing bond type diamond tool with excellent cuttability and method of manufacturing the same |
| US9694512B2 (en) | 2011-09-07 | 2017-07-04 | Ehwa Diamond Industrial Co., Ltd. | Brazing bond type diamond tool with excellent cuttability and method of manufacturing the same |
| CN102896591A (en) * | 2012-09-21 | 2013-01-30 | 南京航空航天大学 | Material distributing device and material distributing method of grinding wheel of brass solder diamond high speed rail plate |
| CN102896591B (en) * | 2012-09-21 | 2015-03-11 | 南京航空航天大学 | Material distributing device and material distributing method of grinding wheel of brass solder diamond high speed rail plate |
| CN106881671A (en) * | 2017-02-24 | 2017-06-23 | 蓝思科技（长沙）有限公司 | A kind of multi-layered brazing diamond tool and preparation method thereof |
| CN108161776A (en) * | 2017-12-19 | 2018-06-15 | 南京航空航天大学 | It is brazed diamond segment composite wheel |
| CN108161778A (en) * | 2017-12-27 | 2018-06-15 | 汕头大学 | A kind of diamond grinding head and its preparation process |
| CN108687681A (en) * | 2018-04-25 | 2018-10-23 | 汕头大学 | A kind of diamond disk and its preparation process |
| CN109623681A (en) * | 2018-12-21 | 2019-04-16 | 华侨大学 | A kind of preparation process of brazed diamond tool |
| CN110202497A (en) * | 2019-07-04 | 2019-09-06 | 南京固华机电科技有限公司 | Diamond fuses the production method of superhard emery wheel |
| CN110202496A (en) * | 2019-07-04 | 2019-09-06 | 南京固华机电科技有限公司 | The production method of superhard mill is fused applied to abrasive machine diamond |
| CN110303438A (en) * | 2019-07-04 | 2019-10-08 | 南京固华机电科技有限公司 | High-strength diamond fuses the production method of superhard cutting sheet |
| CN110315442A (en) * | 2019-07-04 | 2019-10-11 | 南京固华机电科技有限公司 | Diamond fuses the production method of superhard bistrique |
| CN111941299A (en) * | 2020-07-29 | 2020-11-17 | 南京三超新材料股份有限公司 | Method for manufacturing ceramic grinding teeth |
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