CN106475920A - A kind of rail abrasive cut-off wheel and its manufacture and application - Google Patents
A kind of rail abrasive cut-off wheel and its manufacture and application Download PDFInfo
- Publication number
- CN106475920A CN106475920A CN201611115862.4A CN201611115862A CN106475920A CN 106475920 A CN106475920 A CN 106475920A CN 201611115862 A CN201611115862 A CN 201611115862A CN 106475920 A CN106475920 A CN 106475920A
- Authority
- CN
- China
- Prior art keywords
- abrasive
- mesh
- rail
- wheel
- abrasive material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
- B24D5/12—Cut-off wheels
-
- 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
- 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
- B24D3/285—Reaction products obtained from aldehydes or ketones
-
- 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
- B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
- B24D5/02—Wheels in one piece
- B24D5/04—Wheels in one piece with reinforcing means
Abstract
A kind of rail abrasive cut-off wheel of the present invention, requires according to the material of rail, by the selection to abrasive material, the design of grinding wheel organization structure, the selection of auxiliary material, fully meets the quality requirement in rail cutting process.The present invention is cut to rail with specificity, the durability of its cutting rail, the efficiency of cutting, and the end face quality for cutting rail is significantly larger than the technical indicator of general abrasive cut-off wheel.
Description
Technical field
The invention belongs to abrasive tool industry, is related to a kind of rail abrasive cut-off wheel and preparation method thereof.
Background technology
100,000 kilometers of the existing mileage of railways of China, 10,000 kilometers of high-speed railway, Urban Underground track traffic 2750 are public
In.Still continue to build with higher speed at present, railway build and maintenance is required for substantial amounts of rail abrasive cut-off wheel, and
The country is all that the problem for existing is that durability is poor, and cutting efficiency is low using general abrasive cut-off wheel using rail abrasive cut-off wheel at present,
Cut quality is unstable, and the quality problems being reflected on rail are the working face out of plumb of rail cut surface and rail, cut surface
Burn.For solving the problems of rail cutting, it is necessary to develop a kind of cutting rail special grinding wheel, meet track traffic
Build and maintain needs.
Content of the invention
The purpose of the present invention is existing the problems referred to above when cutting for rail, proposes a kind of suitable cutting rail emery wheel
And optimal technical scheme.
The purpose of the present invention can be realized by following technical proposal,
The structure of rail abrasive cut-off wheel be stack gradually diaphragm, strengthen net, emery wheel body, strengthen net, diaphragm；Both sides
Outer layer is the installation that the effect of diaphragm is easy for emery wheel；For strengthening net, its effect is to improve returning for emery wheel to the secondary outer layer of both sides
Turn intensity, internal layer is cutting body,
The raw material of the cutting body and its weight proportion are：A abrasive material：50 70, SA abrasive material：30 50, grinding wheel organization is adjusted
Whole dose：5 10, binding agent：15 25, auxiliary material (lubricant, colouring agent, coolant)：5—10.
In above-mentioned rail abrasive cut-off wheel, the raw material of the cutting body and its weight proportion are：70 parts of A abrasive material；SA abrasive material
30 parts；Binding agent：20 parts；5 parts of grinding wheel organization conditioning agent；8.5 parts of auxiliary material (lubricant, colouring agent, coolant).
The present invention also provides the manufacture method of above-mentioned rail abrasive cut-off wheel includes following program：
Dispensing：Weigh raw material A abrasive material：50 70 parts；SA abrasive material：30 50 parts；Grinding wheel organization conditioning agent：5 10 parts；Viscous
Knot agent：15 25 parts；Auxiliary material (lubricant, colouring agent, coolant)：5 10 parts.
Batch mixing：The binding agent includes liquid adhesive and powder binder, and A abrasive material and SA abrasive material are mixed in batch mixing pot
All, place into liquid adhesive fully to soak, then by after powder binder, grinding wheel organization regulator and auxiliary material and wetting
A abrasive material and SA abrasive material mix.
Sieve：The compound abrasive for mixing is sifted out, and sieve is loose, and the screen number of sieve is 45 mesh, after sieving
Compound material 8 12 hours, after sieving again by be molding mass.
Shaping：It is put into diaphragm first in mould and strengthens net, the molding mass for then weighing approrpiate wts is poured in mould,
Stand uniformly strikes off, and is placed again into strengthening net and diaphragm, obtains emery wheel blank finally by compressing.
Hardening：Gained emery wheel blank is sent in hardening furnace and is hardened, the temperature of heat hardening stove is：170—190
DEG C, 67 hours are incubated, room temperature are naturally cooled to, that is, obtains finished grinding wheel.
In above-mentioned manufacture method batching sequence, the raw material：Grinding wheel organization regulator be corundum bollow ball, perlite or
Titanium sand, the lubricant in auxiliary material is：F-2 aquadag, talcum powder or tetrafluoroethene powder, coolant is：Iron sulfide, ice crystal
Stone flour, colouring agent is：Iron oxide red, carbon black or titanium ultramarine.
In above-mentioned manufacture method batch mixing program：Liquid-containing binder and powder binder ratio are：1：2—1：3.5.
In above-mentioned manufacture method Composition, the diaphragm is 28 grams of paper of screening, internal lining paper or brown paper.Strengthen net
For glass fiber mesh, the glass fiber mesh is the mesh sheet being made into by glass fiber, and surface coats epoxy resin and phenolic aldehyde tree
Fat mixed liquor, is put in hardening furnace, makes within 5 10 minutes in 100 120 DEG C of bakings.
In above-mentioned manufacture method hardening process, from room temperature to 90-100 DEG C, 8-10 DEG C of intensification per hour；Rise again
Temperature to 115～125 DEG C, 4-5 DEG C of intensification per hour；At 115～125 DEG C, 100-120 minute is incubated；170 are warming up to again～
190 DEG C, 8-10 DEG C of intensification, after reaching 170～190 DEG C, is incubated 6～7 hours per hour.
Temperature programming makes binding ability between interiors of products material more preferable, everywhere even tissue, and durability is good.
The rail abrasive cut-off wheel produced using the present invention and manufacture method gained rail abrasive cut-off wheel, greatly can be met
The demand that track traffic is built, maintained, it employs compound abrasive, makes the performance advantage of abrasive material complementary, has given play to abrasive material
Maximum effect.Higher binder content improves hold of the adhesive to abrasive grain, is suitably added grinding wheel organization tune
Whole dose, so that emery wheel is satisfied certain porosity, effectively solves emery wheel blockage problem in the case of big resection.In addition, certain
The lubricant of ratio, coolant can also reduce the grinding heat in cutting, strengthen the self-sharpening of emery wheel, so as to improve the use of emery wheel
Life-span and cutting efficiency.
Description of the drawings
Fig. 1 is the structural representation of the rail abrasive cut-off wheel of the present invention.Wherein, 1, emery wheel body 2, strengthen net 3, protection
Film.
Fig. 2 is the fabrication schedule schematic diagram of the rail abrasive cut-off wheel of the present invention.
Specific embodiment
The present invention can be explained in detail by the following examples, the open purpose of the present invention is intended to protect the scope of the invention
All interior technological improvements.
Embodiment 1：
Dispensing：Weigh the raw material of required weight proportion, A abrasive material：60 parts；SA abrasive material：40 parts；Binding agent：20 parts；Emery wheel
Tissue conditioners：5 parts；Auxiliary material：8.5 parts, the wherein liquid of adhesive and powder part by weight is 1：2.5.
Batch mixing：First A abrasive material and SA abrasive material are mixed in batch mixing pot even, place into liquid adhesive and A abrasive material and SA are mixed
Close abrasive material fully to soak, then the A abrasive material by powder binder, grinding wheel organization conditioning agent, auxiliary material and after fully soaking and
SA abrasive material is mixed so as to become uniform mixture.
Sieve：By the compound for mixing by sieve sieve pine, the screen number of sieve is 4 mesh, the mixing after sieving
Material material 12 hours, after sieving again by become molding mass.
Shaping：Diaphragm will be put into first in mould and strengthen net, the molding mass for then weighing approrpiate wts pours mould into
Interior, stand all strikes off, and is placed again into strengthening net and diaphragm, obtains emery wheel blank finally by compressing.
Hardening：Obtained emery wheel blank is sent in hardening furnace and is hardened, hardening temperature is raised to 100 DEG C from room temperature,
Heat up 10 DEG C per hour；100 rise to 120 DEG C, heat up 5 DEG C per hour；At 120 DEG C, 120 minutes are incubated；120 rise to 180 DEG C,
Heat up 10 DEG C per hour；After reaching 180 DEG C, 420 minutes are incubated.Room temperature is naturally cooled to, product is come out of the stove, that is, obtain finished sand
Wheel.
Embodiment 2：
Dispensing：Weigh the raw material of required weight proportion, A abrasive material：70 parts；SA abrasive material：30 parts；Binding agent：25 parts；Emery wheel
Tissue conditioners：10 parts；Auxiliary material：5.5 parts, the wherein liquid of adhesive and powder part by weight is 1：3.
The A abrasive material is 24 mesh palm fibre diamond spar, and SA abrasive material is 24 mesh monocrystalline diamond spars, and grinding wheel organization regulator is 24 mesh titanium sand,
Binding agent is phenolic resin, and auxiliary material weight ratio is：4：2：4 lubricant, colouring agent, coolant；
Lubricant is：Particle diameter is less than or equal to the F-2 aquadag of 240 mesh；Coolant is：Particle diameter is less than or equal to 240 purposes
Iron sulfide；Colouring agent is：Particle diameter less than or equal to 240 mesh iron oxide red,.
Batch mixing：First A abrasive material and SA abrasive material are mixed in batch mixing pot even, place into liquid adhesive and A abrasive material and SA are mixed
Close abrasive material fully to soak, then the A abrasive material by powder binder, grinding wheel organization conditioning agent, auxiliary material and after fully soaking and
SA abrasive material is mixed so as to become uniform mixture.
Sieve：By the compound for mixing by sieve sieve pine, the screen number of sieve is 5 mesh, the mixing after sieving
Material material 12 hours, after sieving again by become molding mass.
Shaping：Diaphragm will be put into first in mould and strengthen net, the molding mass for then weighing approrpiate wts pours mould into
Interior, stand uniformly strikes off, and is placed again into strengthening net and diaphragm, obtains emery wheel blank finally by compressing.
Hardening：Obtained emery wheel blank is sent in hardening furnace and is hardened, hardening temperature is raised to 100 DEG C from room temperature,
Heat up 10 DEG C per hour；100～120 DEG C, heat up 5 DEG C per hour；At 120 DEG C, 120 minutes are incubated；120 180 DEG C, per little
10 DEG C of Shi Shengwen；After reaching 180 DEG C, 420 minutes are incubated.Room temperature is naturally cooled to, product is come out of the stove, that is, obtain finished sand wheel.
Product (external diameter 400mm × thickness 4mm × internal diameter 32mm) the of the present invention and universal product (external diameter 400mm × thickness 4mm
× internal diameter 32mm), it is respectively cut the as follows using contrast of rail U75-60：
The universal product constitutes：100 parts of abrasive material Brown Alundum, bonding agent (phenolic resin)：20 parts, auxiliary material：5 parts of iron sulfide, ice
5 parts of spar, 2.5 parts of calcium oxide, 1.5 parts of colouring agent (iron oxide red), 0.5 part of carbon black.The present invention is cut with specificity to rail, its
The durability of cutting rail, the efficiency of cutting, the end face quality for cutting rail are significantly larger than the technical indicator of general abrasive cut-off wheel.
Claims (8)
1. a kind of rail abrasive cut-off wheel, it is characterised in that：Which is formed by following raw materials are mixing cured, is counted by weight, raw material
Including：
A abrasive material：50～70, SA abrasive material：30～50, grinding wheel organization regulator：5～10, binding agent：15～25, auxiliary material (profit
Lubrication prescription, colouring agent and coolant)：5～10.
2. rail abrasive cut-off wheel according to claim 1, it is characterised in that：Count by weight, raw material includes：
A abrasive material：70 parts；SA abrasive material：30 parts；Binding agent：20 parts；Grinding wheel organization regulator：5 parts；Auxiliary material (lubricant,
Toner, coolant)：8.5 part.
3. rail abrasive cut-off wheel according to claim 1 and 2, it is characterised in that：
The A abrasive material is 24-30 mesh palm fibre diamond spar, and SA abrasive material is 24-30 mesh monocrystalline diamond spar, and grinding wheel organization regulator is 24-36 mesh
One or two or more kinds in titanium sand, corundum bollow ball, perlite, binding agent are phenolic resin, and auxiliary material weight ratio is：3-
5：1-3：The lubricant of 3-5, coolant, colouring agent；Lubricant is：Particle diameter is less than or equal to F-2 aquadag, the talcum of 240 mesh
One or two or more kinds in powder or polytetrafluoroethylene powder；Coolant is：Particle diameter is less than or equal to iron sulfide, the ice crystal of 240 mesh
One kind in powder or two kinds；Colouring agent is：Particle diameter is less than or equal to the one kind in iron oxide red, carbon black or the titanium ultramarine of 240 mesh or two kinds
More than.
4. the rail abrasive cut-off wheel according to claim 1,2 or 3, it is characterised in that：Binding agent is phenolic resin, wherein wraps
Liquid phenolic resin and powdered phenol-formaldehyde resin is included, liquid phenolic resin with powdered phenol-formaldehyde resin part by weight is：1：2～1：3.5.
5. the manufacture method of the arbitrary described rail abrasive cut-off wheel of a kind of claim 1-4, it is characterised in that including following step
Suddenly：
1) batch mixing：The binding agent includes liquid adhesive and powder binder, first mixes A abrasive material and SA abrasive material in batch mixing pot
All, place into liquid phenolic resin fully to soak, then by powdered phenol-formaldehyde resin, grinding wheel organization regulator and auxiliary material and profit
A abrasive material and SA abrasive material after wet is mixed；
2) sieve：By the compound abrasive for mixing by sieve sieve pine, the screen number of sieve is 45 mesh, mixed after sieving
Close material material (normal temperature standing) 8 12 hours, after crossing 45 mesh sieves again, molding mass is by the component of sieve；
3) it is molded：Diaphragm will be put into first in mould and strengthen net, then weigh molding mass and pour in mould, stand is uniformly scraped
Flat, be placed again into strengthening net and diaphragm, emery wheel blank is obtained finally by compressing；
4) harden：Gained emery wheel blank is sent in hardening furnace and is hardened, the temperature of heat hardening stove is 170～190 DEG C, protects
Temperature was naturally cooled to room temperature, that is, obtains finished grinding wheel after 6～7 hours.
6. manufacture method according to claim 5, it is characterised in that：Diaphragm described in Composition is screened for 28 grams
Paper, internal lining paper or brown paper；Enhancing net is 5-8 mesh glass fiber mesh, and the glass fiber mesh is made into by glass fiber
Mesh sheet, surface coat weight compare 1-2：The epoxy resin of 1-2 and phenolic resin mixed liquor, are put in hardening furnace, 100～120
DEG C baking is made for 5～10 minutes.
7. manufacture method according to claim 5, it is characterised in that：In hardening process, heating process is, from room temperature
To 90-100 DEG C, 8-10 DEG C of intensification per hour；115～125 DEG C are warming up to again, per hour 4-5 DEG C of intensification；At 115～125 DEG C
When, it is incubated 100-120 minute；170～190 DEG C are warming up to again, per hour 8-10 DEG C of intensification, after reaching 170～190 DEG C, insulation 6
～7 hours.
8. application of the arbitrary described emery wheel of a kind of claim 1-4 in rail cutting process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611115862.4A CN106475920A (en) | 2016-12-07 | 2016-12-07 | A kind of rail abrasive cut-off wheel and its manufacture and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611115862.4A CN106475920A (en) | 2016-12-07 | 2016-12-07 | A kind of rail abrasive cut-off wheel and its manufacture and application |
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| Publication Number | Publication Date |
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| CN106475920A true CN106475920A (en) | 2017-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611115862.4A Pending CN106475920A (en) | 2016-12-07 | 2016-12-07 | A kind of rail abrasive cut-off wheel and its manufacture and application |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108515467A (en) * | 2018-03-20 | 2018-09-11 | 南通哥班玻璃纤维制品有限公司 | A kind of heavy load glass fibre grinding wheel enhancing mesh sheet and its manufacturing method |
| CN109531780A (en) * | 2018-12-25 | 2019-03-29 | 河南联合精密材料股份有限公司 | A kind of strong cutting low-loss whetstone, preparation method and applications |
| CN112192416A (en) * | 2020-09-08 | 2021-01-08 | 徐州锦驰耐磨材料科技有限公司 | Rail cutting grinding wheel and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108515467A (en) * | 2018-03-20 | 2018-09-11 | 南通哥班玻璃纤维制品有限公司 | A kind of heavy load glass fibre grinding wheel enhancing mesh sheet and its manufacturing method |
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| CN112192416A (en) * | 2020-09-08 | 2021-01-08 | 徐州锦驰耐磨材料科技有限公司 | Rail cutting grinding wheel and preparation method thereof |
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Application publication date: 20170308 |