CN110116377A - A kind of steel rail grinding resin-based prototyping composites and preparation method thereof - Google Patents
A kind of steel rail grinding resin-based prototyping composites and preparation method thereof Download PDFInfo
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- CN110116377A CN110116377A CN201910393313.0A CN201910393313A CN110116377A CN 110116377 A CN110116377 A CN 110116377A CN 201910393313 A CN201910393313 A CN 201910393313A CN 110116377 A CN110116377 A CN 110116377A
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- resin
- steel rail
- composites
- rail grinding
- polypropylene monofilament
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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
- B24D18/0009—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for using moulds or presses
-
- 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
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
- B24D3/20—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially organic
- B24D3/28—Resins or natural or synthetic macromolecular compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/34—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
- B24D3/342—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties incorporated in the bonding agent
- B24D3/344—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties incorporated in the bonding agent the bonding agent being organic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/34—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
- B24D3/346—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties utilised during polishing, or grinding operation
Abstract
The invention discloses a kind of steel rail grinding resin-based prototyping composites, it is composed of the following weight percentages of raw materials: resin-oatmeal 20%-50%, CBN210 is 15%-25%, CBN850 is 10%-25%, electrolytic copper powder is 3%-13%, green silicon carbide is 12%-20%, and coupling agent 1.4%-1.8%, polypropylene monofilament fiber is 0.2%-0.6%.The hard grinding wheel produced under steel rail grinding provided by the invention resin cement cubic boron nitride grinding wheel and related process has good polishing sharp, has a safety feature when can satisfy railroad track maintenance polishing to grinding wheel, the requirement that quality of polishing is high, polishing mileage is long；And relative to conventional abrasive material grinding wheel, greatly reduce polishing work bring environmental pollution.
Description
Technical field
The present invention relates to superhard material fields, specifically more particularly to railway steel rail polishing resinoid bond and use it
The method for preparing CBN grinding wheel.
Background technique
As building for the speed rail net that China express railway is main framing is emerging with national big and medium-sized cities rail traffic
It rises, the diseases such as rail conquassation, side grinding, wave mill and removing become the major issue that rail traffic faces.Steel rail grinding technology
It has been increasingly becoming a basic fundamental of China railways line upkeep since introduction, Rail Surface can be eliminated by steel rail grinding
Defect and by rail head contour recovery to original design requirement, thus slow down rail surface defects development, improve Rail Surface it is smooth
Degree further achievees the purpose that improve traveller's comfort level, reduces wheel-rail noise, extends rail service life.
The steel rail grinding maintenance of current generation still uses conventional abrasive material grinding wheel, but is limited to itself hardness of the abrasive grain of general grinding abrasive disk
It is low, it is ground the performance characteristic that is fast, wearing no resistance that falls off and still has Rail Surface after polishing when carrying out polishing maintenance to rail
The mass defects such as burn, shake line and running speed are low, polishing stroke is short, need the frequently influences maintenance such as parking replacement polishing grinding wheel
The problem of efficiency.Due to the special operating mode of railway transportation and rail traffic, the curing time window of rail is shorter, therefore such as
The efficiency and quality what improves rail maintenance operation become more and more important China railways and rail traffic.CBN abrasive material belongs to
Super hard abrasive has hardness high, and cutting edge is sharp, shows the high feature of grinding efficiency height, good grinding quality, wearability.
Chinese invention patent " a kind of soldering CBN abrasive material inserted sheet composite wheel and its manufacturing method " (patent No.:
CN108356718A it) discloses a kind of soldering CBN abrasive material inserted sheet composite wheel and its manufacturing method, this method making step is main
It is divided into: 1) makes soldering CBN weld tabs according to made emery wheel size design；2) respective numbers weld tabs is placed in emery wheel resin mixture
In mold；3) subsequent emery wheel manufacture is carried out by resin emery wheel manufacture craft；The present invention attempt be inlaid be brazed CBN abrasive material inserted sheet
Resin wheel replace existing general grinding abrasive disk polish railway track；For relatively general grinding abrasive disk, which can be certain
The wearability to the grinding efficiency and grinding wheel itself of rail is promoted in degree, but is limited to structure design and inserted sheet method, for
Polishing stroke is substantially improved, reduces replacement polishing grinding wheel frequency and reduces environmental pollution etc., is but difficult strong.
And usual resins CBN grinding wheel is not able to satisfy grinding wheel when railway track maintains and contacts, polishes with rail high-frequency percussion
Process develops resin dedicated bonding agent CBN grinding wheel to rail iron without the environmental demands such as coolant liquid is cooling to polishing region
Rail carries out polishing maintenance, meets the trend of current grinding materials and grinding tool industrial application development, to the efficiency for improving rail maintenance operation and
Quality is of great immediate significance.
Summary of the invention
The purpose of the present invention is requirements and manufacturing method based on resin-based prototyping composites, design a kind of be suitble to
The resin-based prototyping composites of rail maintenance promote grinding efficiency, maintenance qualities, polishing mileage etc., to meet China railways
Rail maintenance maintenance requires under network high-speed development situation.
To achieve the goals above, technical solution provided by the invention are as follows:
A kind of steel rail grinding resin-based prototyping composites, are composed of the following weight percentages of raw materials: resin-oatmeal 20%-
50%, CBN210 15%-25%, CBN850 10%-25%, electrolytic copper powder 3%-13%, green silicon carbide 12%-20%, coupling agent
For 1.4%-1.8%, polypropylene monofilament fiber is 0.2%-0.6%.
It is described to be composed of the following weight percentages of raw materials: resin-oatmeal 20%, CBN210 25%, CBN850 20%, electricity
Solving copper powder is 13%, green silicon carbide 20%, coupling agent 1.8%, and polypropylene monofilament fiber is 0.2%.
It is described to be composed of the following weight percentages of raw materials: resin-oatmeal 50%, CBN210 15%, CBN850 10%, electricity
Solving copper powder is 11%, green silicon carbide 12%, coupling agent 1.4%, and polypropylene monofilament fiber is 0.6%.
It is described to be composed of the following weight percentages of raw materials: resin-oatmeal 32%, CBN210 20%, CBN850 25%, electricity
Solving copper powder is 3%, green silicon carbide 18%, coupling agent 1.4%, and polypropylene monofilament fiber is 0.6%.
The granularity of the CBN210 is 60/80, and the granularity of the CBN850 is 60/80.
The resin-oatmeal is using bimaleimide resin, and the powder size of bimaleimide resin is 15-
35μm。
The diameter of the polypropylene monofilament fiber is not more than 50 μm.
The preparation method of steel rail grinding resin-based prototyping composites, includes the following steps:
1) coupling agent is mixed with the weight ratio of 1:20 with methanol to and kept 60-70 DEG C of uniform stirring state, wetting agent is made；
2) cubic boron nitride abrasive materials and wetting agent made of step (1) are sufficiently infiltrated, is then dried to perseverance under the conditions of 60-70 DEG C
Weight；
3) polypropylene monofilament fiber cutting is crushed to 0.5-2mm；
4) step 3) is cut into require length dimension polypropylene monofilament fiber and bimaleimide resin, electrolytic copper powder,
Green silicon carbide is uniformly mixed in three-dimensional material mixer, forms uniform bonding agent system；
5) bonding agent system will be handled in the cubic boron nitride handled well in step 2) and step 4) well to mix in three-dimensional material mixer
It closes uniformly, crosses 40# mesh screen, complete mixed ingredients；
6) release agent is uniformly coated to the pressure ring mating surface of mold using spray release agents；
7) mold for coating release agent and grinding wheel base body cooperation assembling are formed into die cavity；
8) mixed ingredients after step 5) sieve are uniformly put into the assembled die cavity of step 7), by plough material, shake material, scraper rear cover
Enter pressure ring, and mold is pushed into the hot press set；
9) extruding dies are unloaded after keeping the temperature by program；
10) it is thus completed the production by processes, the products such as pincers, mills.
In step 4), polypropylene monofilament fiber mixes 1-2h in three-dimensional material mixer.
The beneficial effects of the present invention are:
1) it is produced under steel rail grinding provided by the invention resin cement cubic boron nitride grinding wheel and related process superhard
Grinding wheel has good polishing sharp, has a safety feature when can satisfy railroad track maintenance polishing to grinding wheel, quality of polishing
Requirement high, polishing mileage is long；And relative to conventional abrasive material grinding wheel, greatly reduce polishing work bring environmental pollution.
2) polypropylene monofilament fiber can form good combination as a kind of high molecular material with resinoid bond,
Itself fibre structure can effectively promote the intensity of grinding wheel itself, and the polypropylene monofilament fiber of 0.5-2mm meets track polishing
With resin bond wheel high intensity, guarantee that high frequency and dry grinding condition lower grinding wheel are not in the security and stability such as burst apart, fall off.
3) impact strength, static pressure is selected to be crushed all higher CBN210 of load and impact strength and the broken load of static pressure
Medium two kinds of cubic boron nitride abrasive materials collocation of CBN850 use, and grinding wheel obtained is made to have good grinding in rail polishing
Sharpness and self-sharpening.
Specific embodiment
Detailed description of the preferred embodiments below.It should be understood that described herein specific
Embodiment is merely illustrative and explains the present invention, is not intended to restrict the invention.
Specifically, the model of each raw material is as follows in grinding wheel formula system:
The R0502 type bimaleimide resin of Zhengzhou Research Institute for Abrasives & Grinding Co., Ltd.'s exploitation；The Central-South Ztel in Zhengzhou
The cubic boron nitride CBN210 that superhard material Co., Ltd purchases；Rich Nike superhard material limited liability company purchases
CBN850；The electrolytic copper powder (200 mesh) for having levigation end new material (Beijing) Co., Ltd to purchase, pigeon Group Co., Ltd purchases
Green silicon carbide (220#), the coupling agent (AC-638) that Guangdong Noah's ark (Fugang) chemistry is purchased, the limited public affairs of Xi'an Ai De architectural engineering
Take charge of the polypropylene monofilament fiber purchased.
In following embodiment, resin-oatmeal, which is selected, has heat-resistant bismaleimide bismaleimide resin to enhance bonding agent system to abrasive grain
Holding power；It selects dendritic structure, guarantee that institutional framework continues 200 mesh electrolytic copper powders of wearability；Have and has assistant grinding
Ability and the 220# green silicon carbide for facilitating grinding layer self-sharpening.
The granularity of the CBN210 is that the granularity of 60/80, CBN850 is also 60/80；To make grinding wheel tool in rail polishing
Standby good grinding sharpness and self-sharpening select impact strength, static pressure to be crushed all higher CBN210 of load and shock resistance
Intensity and static pressure are crushed the medium two kinds of cubic boron nitride abrasive materials collocation of CBN850 of load and use；CBN210 intensity is high, shock resistance
Performance is good, can satisfy the technical need efficiently polished；CBN850 has good micro- breaking capacity, hard grinding wheel can be made to have
It is good to continue self-sharpening.
The powder size of the bimaleimide resin is 15-35 μm.
The diameter of the polypropylene monofilament fiber is not more than 50 μm；For make grinding wheel rail polishing when cope with high frequency,
Height punching grinding operating condition, selects polypropylene monofilament fiber as the reinforcing agent of grinding wheel；Polypropylene monofilament fiber is as a kind of macromolecule
Material, can form good combination with resinoid bond, itself fibre structure can effectively promote the strong of grinding wheel itself
Degree.
Embodiment 1
Steel rail grinding resin cement cubic boron nitride grinding wheel, is composed of the following weight percentages of raw materials: bismaleimide
Polyimide resin is 20%, CBN210 25%, CBN850 20%, electrolytic copper powder 13%, green silicon carbide 20%, coupling agent 1.8%,
Polypropylene monofilament fiber is 0.2%.
The preparation method of steel rail grinding resin cement cubic boron nitride, includes the following steps:
1) in order to meet resinoid bond to the stronger bonding streng of abrasive grain and good grinding sharpness, in cubic boron nitride
Form that physics is chimeric and the synergistic effect of chemical bonds between abrasive material and resinoid bond system, guarantee abrasive material is in steel rail grinding
Shi Buhui fast-falling, therefore coupling agent first must be dissolved in methanol, coupling agent is mixed and protected with methanol with the weight ratio of 1:20
70 DEG C of uniform stirring states are held, wetting agent is made；
2) cubic boron nitride abrasive materials and wetting agent made of step (1) are sufficiently infiltrated, then drying to constant weight under the conditions of 70 DEG C；
3) high-intensitive to meet track polishing resin bond wheel, guarantee that high frequency and dry grinding condition lower grinding wheel are not in collapse
It the security and stability such as splits, fall off, therefore needing to carry out polypropylene monofilament fiber shearing-crushing to 0.5-2mm, then and in formula
Other compositions in addition to cubic boron nitride mix 1 hour in three-dimensional material mixer；Then, mixture again be coupled agent infiltration
The cubic boron nitride crossed is uniformly mixed, and completes the mixture of molding mass.
4) step 3) is cut into the polypropylene monofilament fiber and bimaleimide resin, cathode copper for requiring length dimension
Powder, green silicon carbide are uniformly mixed in three-dimensional material mixer, form uniform bonding agent system；
5) bonding agent system will be handled in the cubic boron nitride handled well in step 2) and step 4) well to mix in three-dimensional material mixer
It closes uniformly, crosses 40# sieve, complete mixed ingredients；Preferably, 40# sieve is crossed three times；
6) release agent is uniformly coated to the pressure ring mating surface of mold using spray release agents；
7) mold for coating release agent and grinding wheel base body cooperation assembling are formed into die cavity；
8) mixed ingredients after step 5) sieve are uniformly put into the assembled die cavity of step 7), by plough material, shake material, scraper rear cover
Enter pressure ring, and mold is pushed into the hot press set；
9) extruding dies are unloaded after keeping the temperature by program；
10) it is thus completed the production by processes, the products such as pincers, mills.
Using above-mentioned formula and the grinding wheel of the above-mentioned preparation of technique, when experimental test, the maximum (top) speed of receiving is 62m/s,
Bearing grinding impact force is 285N, and rail roughness Ra 10.4, polishing mileage is 65km, and without burn.
Embodiment 2
Steel rail grinding resin cement cubic boron nitride grinding wheel, is composed of the following weight percentages of raw materials: bismaleimide
Polyimide resin is 50%, CBN210 15%, CBN850 10%, electrolytic copper powder 11%, green silicon carbide 12%, coupling agent 1.4%,
Polypropylene monofilament fiber is 0.6%.
The preparation method of steel rail grinding resin cement cubic boron nitride, includes the following steps:
1) in order to meet resinoid bond to the stronger bonding streng of abrasive grain and good grinding sharpness, in cubic boron nitride
Form that physics is chimeric and the synergistic effect of chemical bonds between abrasive material and resinoid bond system, guarantee abrasive material is in steel rail grinding
Shi Buhui fast-falling, therefore coupling agent first must be dissolved in methanol, coupling agent is mixed and protected with methanol with the weight ratio of 1:20
70 DEG C of uniform stirring states are held, wetting agent is made；
2) cubic boron nitride abrasive materials and wetting agent made of step (1) are sufficiently infiltrated, then drying to constant weight under the conditions of 60 DEG C；
3) high-intensitive to meet track polishing resin bond wheel, guarantee that high frequency and dry grinding condition lower grinding wheel are not in collapse
It the security and stability such as splits, fall off, therefore needing to carry out polypropylene monofilament fiber shearing-crushing to 0.5-2mm, then and in formula
Other compositions in addition to cubic boron nitride mix 1 hour in three-dimensional material mixer；Then, mixture again be coupled agent infiltration
The cubic boron nitride crossed is uniformly mixed, and completes the mixture of molding mass.
4) step 3) is cut into the polypropylene monofilament fiber and bimaleimide resin, cathode copper for requiring length dimension
Powder, green silicon carbide are uniformly mixed in three-dimensional material mixer, form uniform bonding agent system；
5) bonding agent system will be handled in the cubic boron nitride handled well in step 2) and step 4) well to mix in three-dimensional material mixer
It closes uniformly, crosses 40# sieve, complete mixed ingredients；Preferably, 40# sieve is crossed three times；
6) release agent is uniformly coated to the pressure ring mating surface of mold using spray release agents；
7) mold for coating release agent and grinding wheel base body cooperation assembling are formed into die cavity；
8) mixed ingredients after step 5) sieve are uniformly put into the assembled die cavity of step 7), by plough material, shake material, scraper rear cover
Enter pressure ring, and mold is pushed into the hot press set；
9) extruding dies are unloaded after keeping the temperature by program；
10) it is thus completed the production by processes, the products such as pincers, mills.
Using above-mentioned formula and the grinding wheel of the above-mentioned preparation of technique, when experimental test, the maximum (top) speed of receiving is 134m/s,
Bearing grinding impact force is 817N, and rail roughness Ra 4.8, polishing mileage is 96km, occasionally there is burn.
Embodiment 3
Steel rail grinding resin cement cubic boron nitride grinding wheel, is composed of the following weight percentages of raw materials: bismaleimide
Polyimide resin is 32%, CBN210 20%, CBN850 25%, electrolytic copper powder 3%, green silicon carbide 18%, coupling agent 1.4%,
Polypropylene monofilament fiber is 0.6%.
The preparation method of steel rail grinding resin cement cubic boron nitride, includes the following steps:
1) in order to meet resinoid bond to the stronger bonding streng of abrasive grain and good grinding sharpness, in cubic boron nitride
Form that physics is chimeric and the synergistic effect of chemical bonds between abrasive material and resinoid bond system, guarantee abrasive material is in steel rail grinding
Shi Buhui fast-falling, therefore coupling agent first must be dissolved in methanol, coupling agent is mixed and protected with methanol with the weight ratio of 1:20
70 DEG C of uniform stirring states are held, wetting agent is made；
2) cubic boron nitride abrasive materials and wetting agent made of step (1) are sufficiently infiltrated, then drying to constant weight under the conditions of 70 DEG C；
3) high-intensitive to meet track polishing resin bond wheel, guarantee that high frequency and dry grinding condition lower grinding wheel are not in collapse
It the security and stability such as splits, fall off, therefore needing to carry out polypropylene monofilament fiber shearing-crushing to 0.5-2mm, then and in formula
Other compositions in addition to cubic boron nitride mix 2 hours in three-dimensional material mixer；Then, mixture again be coupled agent infiltration
The cubic boron nitride crossed is uniformly mixed, and completes the mixture of molding mass.
4) step 3) is cut into the polypropylene monofilament fiber and bimaleimide resin, cathode copper for requiring length dimension
Powder, green silicon carbide are uniformly mixed in three-dimensional material mixer, form uniform bonding agent system；
5) bonding agent system will be handled in the cubic boron nitride handled well in step 2) and step 4) well to mix in three-dimensional material mixer
It closes uniformly, crosses 40# sieve, complete mixed ingredients；Preferably, 40# sieve is crossed three times；
6) release agent is uniformly coated to the pressure ring mating surface of mold using spray release agents；
7) mold for coating release agent and grinding wheel base body cooperation assembling are formed into die cavity；
8) mixed ingredients after step 5) sieve are uniformly put into the assembled die cavity of step 7), by plough material, shake material, scraper rear cover
Enter pressure ring, and mold is pushed into the hot press set；
9) extruding dies are unloaded after keeping the temperature by program；
10) it is thus completed the production by processes, the products such as pincers, mills.
Using above-mentioned formula and the grinding wheel of the above-mentioned preparation of technique, when experimental test, the maximum (top) speed of receiving is 108m/s,
Bearing grinding impact force is 724N, and rail roughness Ra 6.3, polishing mileage is 89km, no burn.
In addition, found in comparative experiments, when CBN grinding wheel made from bimaleimide resin is not used in formula,
Be easy to appear burn when rail grinding, and mileage of polishing it is short≤50Km；And as CBN210 unused in formula and two kinds of CBN850
The grinding wheel that the abrasive material that cubic boron nitride abrasive materials collocation uses is prepared, rail roughness Ra≤6.4 are difficult to ensure in rail grinding,
And it is easy to appear burn；The CBN grinding wheel of polypropylene monofilament fiber is not used, the high grinding punching of receiving cannot be taken into account in steel rail grinding
The problem of hitting power (>=100N) and high grinding revolving speed (>=80m/s).
To sum up, the superhard sand produced under resin cement cubic boron nitride formula provided by the invention and related process
Wheel have good polishing sharp, can satisfy railroad track maintenance polishing when grinding wheel is had a safety feature, quality of polish height,
The requirement for mileage length of polishing；And relative to conventional abrasive material grinding wheel, greatly reduce polishing work bring environmental pollution.
The endpoint of disclosed range and any value are not limited to accurately range or the value herein, these ranges or
Value should be understood as comprising the value close to these ranges or value.For numberical range, between the endpoint value of each range, respectively
It can be combined with each other between the endpoint value of a range and individual point value, and individually between point value and obtain one or more
New numberical range, these numberical ranges should be considered as specific open herein.
Claims (9)
1. a kind of steel rail grinding resin-based prototyping composites, which is characterized in that be composed of the following weight percentages of raw materials:
Resin-oatmeal is 20%-50%, CBN210 15%-25%, CBN850 10%-25%, electrolytic copper powder 3%-13%, and green silicon carbide is
12%-20%, coupling agent 1.4%-1.8%, polypropylene monofilament fiber are 0.2%-0.6%.
2. steel rail grinding resin-based prototyping composites as described in claim 1, it is characterised in that: described by following weight hundred
Divide the raw material composition of ratio: resin-oatmeal 20%, CBN210 25%, CBN850 20%, electrolytic copper powder 13%, green silicon carbide are
20%, coupling agent 1.8%, polypropylene monofilament fiber is 0.2%.
3. steel rail grinding resin-based prototyping composites as described in claim 1, it is characterised in that: described by following weight hundred
Divide the raw material composition of ratio: resin-oatmeal 50%, CBN210 15%, CBN850 10%, electrolytic copper powder 11%, green silicon carbide are
12%, coupling agent 1.4%, polypropylene monofilament fiber is 0.6%.
4. steel rail grinding resin-based prototyping composites as described in claim 1, it is characterised in that: described by following weight hundred
Divide the raw material composition of ratio: resin-oatmeal 32%, CBN210 20%, CBN850 25%, electrolytic copper powder 3%, green silicon carbide are
18%, coupling agent 1.4%, polypropylene monofilament fiber is 0.6%.
5. steel rail grinding resin-based prototyping composites as described in claim 1, it is characterised in that: the granularity of the CBN210
It is 60/80, the granularity of the CBN850 is 60/80.
6. the steel rail grinding resin-based prototyping composites as described in any one of claim 1 to 5, it is characterised in that: the resin
Powder is using bimaleimide resin, and the powder size of bimaleimide resin is 15-35 μm.
7. steel rail grinding resin-based prototyping composites as claimed in claim 6, it is characterised in that: the polypropylene monofilament is fine
The diameter of dimension is not more than 50 μm.
8. the preparation method of steel rail grinding resin-based prototyping composites described in claim 6, it is characterised in that: including as follows
Step:
1) coupling agent is mixed with the weight ratio of 1:20 with methanol to and kept 60-70 DEG C of uniform stirring state, wetting agent is made；
2) cubic boron nitride abrasive materials and wetting agent made of step (1) are sufficiently infiltrated, is then dried to perseverance under the conditions of 60-70 DEG C
Weight；
3) polypropylene monofilament fiber cutting is crushed to 0.5-2mm；
4) step 3) is cut into require length dimension polypropylene monofilament fiber and bimaleimide resin, electrolytic copper powder,
Green silicon carbide is uniformly mixed in three-dimensional material mixer, forms uniform bonding agent system；
5) bonding agent system will be handled in the cubic boron nitride handled well in step 2) and step 4) well to mix in three-dimensional material mixer
It closes uniformly, crosses 40# mesh screen, complete mixed ingredients；
6) release agent is uniformly coated to the pressure ring mating surface of mold using spray release agents；
7) mold for coating release agent and grinding wheel base body cooperation assembling are formed into die cavity；
8) mixed ingredients after step 5) sieve are uniformly put into the assembled die cavity of step 7), by plough material, shake material, scraper rear cover
Enter pressure ring, and mold is pushed into the hot press set；
9) extruding dies are unloaded after keeping the temperature by program；
10) it is thus completed the production by processes, the products such as pincers, mills.
9. the preparation method of steel rail grinding resin-based prototyping composites as claimed in claim 8, it is characterised in that: step 4)
In, polypropylene monofilament fiber mixes 1-2h in three-dimensional material mixer.
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| CN201910393313.0A CN110116377B (en) | 2019-05-13 | 2019-05-13 | Resin binder CBN grinding wheel for steel rail grinding and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111633574A (en) * | 2020-05-19 | 2020-09-08 | 郑州磨料磨具磨削研究所有限公司 | Composite binder grinding wheel for steel rail grinding and preparation method thereof |
| CN113696109A (en) * | 2021-09-15 | 2021-11-26 | 郑州磨料磨具磨削研究所有限公司 | Grinding wheel for grinding insulated bearing and forming method thereof |
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| CN109483414A (en) * | 2018-11-16 | 2019-03-19 | 江苏赛扬精工科技有限责任公司 | Piston ring processing environment-friendly type grinding disc with double end faces and the preparation method and application thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111633574A (en) * | 2020-05-19 | 2020-09-08 | 郑州磨料磨具磨削研究所有限公司 | Composite binder grinding wheel for steel rail grinding and preparation method thereof |
| CN113696109A (en) * | 2021-09-15 | 2021-11-26 | 郑州磨料磨具磨削研究所有限公司 | Grinding wheel for grinding insulated bearing and forming method thereof |
| CN113696109B (en) * | 2021-09-15 | 2022-11-01 | 郑州磨料磨具磨削研究所有限公司 | Grinding wheel for grinding insulated bearing and forming method thereof |
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