CN109986476A - A kind of new type of resin sand grinding wheel factory formula and its production technology - Google Patents
A kind of new type of resin sand grinding wheel factory formula and its production technology Download PDFInfo
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- CN109986476A CN109986476A CN201910420236.3A CN201910420236A CN109986476A CN 109986476 A CN109986476 A CN 109986476A CN 201910420236 A CN201910420236 A CN 201910420236A CN 109986476 A CN109986476 A CN 109986476A
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- grinding wheel
- time
- mixture
- abrasive
- phenolic resin
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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
- 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
Abstract
The invention discloses a kind of new type of resin sand grinding wheel factory formulas, it includes each component of following parts by weight: 35 ~ 45 parts of brown corundum abrasive；55 ~ 65 parts of fused alumina zirconia abrasive material；12.5 ~ 13.5 parts of bonding agent；Ice crystal is 9.8 ~ 10.2 parts, it also discloses a kind of new type of resin sand grinding wheel production technology, it is the following steps are included: S1: mixing, S2: abrasive wheel forming, S3: grinding wheel hardening.The beneficial effects of the present invention are: passing through the high rigidity of fused alumina zirconia abrasive material, enable the hardness of grinding wheel high, to improve the grinding performance of grinding wheel, then the brown corundum abrasive of good toughness is added, so as to give full play of the grinding performance of grinding wheel, it is compared with existing resin wheel, nearly 4 times of grinding efficiency, and long service life can be improved.
Description
Technical field
The present invention relates to grinding wheel production technical field, especially a kind of new type of resin sand grinding wheel factory formula and its production work
Skill.
Background technique
Grinding wheel is also known as bonded abrasive tool, grinding wheel be by bonding agent by conventional abrasive material be consolidated into certain shapes (majority is circle, in
There is through-hole in centre), and the bonded abrasive tool with some strength.It is generally made of abrasive material, bonding agent and stomata, this three parts often claims
For the three elements of bonded abrasive tool.According to the different classifications of bonding agent, ceramic (bonding agent) grinding wheel, resin (bonding agent) common are
Grinding wheel, rubber (bonding agent) grinding wheel.Grinding wheel is one kind that dosage is maximum in grinding tool, using face is most wide, high speed rotation when use, can
The outer circle of metal or non-metal workpiece, inner circle, plane and various type faces etc. are roughly ground, half refine and fine grinding and fluting and
Cutting etc..
Grinding wheel has chip off-falling serious to existing resin sand grinding wheel in use, there is crackle and stainless steel surface burn etc.
Problem adulterates the stainless steel powder for the block and polishing that grinding wheel falls off during polishing stainless steel together, and factory is difficult to back
It receives, use cost increases.
Summary of the invention
The purpose of the present invention is to overcome the shortcomings of the existing technology, provide a kind of new type of resin sand grinding wheel factory formula and its
Production technology.
The purpose of the present invention is achieved through the following technical solutions: a kind of new type of resin sand grinding wheel factory formula, it includes
The each component of following parts by weight:
35 ~ 45 parts of brown corundum abrasive；
55 ~ 65 parts of fused alumina zirconia abrasive material；
12.5 ~ 13.5 parts of bonding agent；
Ice crystal is 9.8 ~ 10.2 parts.
Preferably, the mesh number of the brown corundum abrasive is 28 ~ 32 mesh, and the mesh number of the fused alumina zirconia abrasive material is 22 ~ 26 mesh.
Preferably, the bonding agent includes thermoplastic phenolic resin powder and thermoplastic phenolic resin liquid, wherein thermoplasticity
The parts by weight of phenol-formaldehyde resin powder are 7.8 ~ 8.2 parts, remaining is thermoplastic phenolic resin liquid.
A kind of production technology of new type of resin sand grinding wheel, it the following steps are included:
S1: brown corundum abrasive and fused alumina zirconia abrasive material are put into mixing pot by mixing, obtain abrasive material mixture, then by thermoplastic
Property liquid phenolic resin put into mixing pot, then start for the first time stir, when the packet of thermoplastic phenolic resin liquid substantially uniformity
After wrapping abrasive material mixture, mixing pot stops stirring, and thermoplastic phenolic resin powder and ice crystal is then added in mixing pot again,
Then start second of stirring, when after mixing evenly, the mixture in mixing pot is poured out, and place in constant temperature blowing room to
It is 3 hours few.
S2: abrasive wheel forming, it includes the following steps；
S21: feeding intake for the first time, and first time mixture is first put into abrasive wheel forming mould, places one after mixture booth is even
Glass fiber resin mesh sheet is in the upper surface of first time mixture；
S22: feeding intake for the second time, then puts into second of mixture in abrasive wheel forming mould again, places after mixture booth is even
One glass fiber resin mesh sheet is in the upper surface of second of mixture；
S23: feeding intake for the third time, then puts into third time mixture in abrasive wheel forming mould again, places after mixture booth is even
One glass fiber resin mesh sheet is in the upper surface of third time mixture；
S24: compression moulding is touched the abrasive wheel forming for the completion that feeds intake in S23 and is suppressed, obtains grinding wheel blank；
S3: grinding wheel hardening is heated, thermoplastic phenolic resin is in Wu Luotuo to grinding wheel blank in such a way that electric furnace heats
In the case that product are heated, so that thermoplastic phenolic resin becomes thermosetting phenolic resin, so that grinding wheel hardens.
Preferably, in the S1 step, first time mixing time is not less than 15 minutes, and the time of second of stirring is not less than
10 minutes.
Preferably, the temperature of the constant temperature blowing room in the S1 step is between 24 degrees Celsius to 26 degrees Celsius.
Preferably, the first ratio to feed intake in the S21 is feeding intake in 20% ~ 25%, S22 of grinding wheel weight for the second time
Ratio be grinding wheel weight 40% ~ 45%, the raw material of remaining grinding wheel then feeds intake in S23 for the third time.
Preferably, the electric furnace is heated to be slow heating, and electric furnace finally heat up after temperature taken the photograph 180 degrees Celsius ~ 190
Between family name's degree.
The invention has the following advantages that new type of resin sand grinding wheel of the invention contains brown corundum abrasive, fused alumina zirconia abrasive material, lead to
The high rigidity for crossing fused alumina zirconia abrasive material enables the hardness of grinding wheel high, so that the grinding performance of grinding wheel is improved, then along with tough
The good brown corundum abrasive of property, is compared so as to give full play of the grinding performance of grinding wheel with existing resin wheel, Ke Yiti
High nearly 4 times of grinding efficiency, and long service life.
Specific embodiment
Embodiment one:
A kind of new type of resin sand grinding wheel factory formula, it includes each component of following parts by weight: 35 parts of brown corundum abrasive；Fused alumina zirconia
55 parts of abrasive material；12.5 parts of bonding agent；Ice crystal is 9.8 parts, and further, brown corundum abrasive and fused alumina zirconia abrasive material are powder,
Wherein the mesh number of brown corundum abrasive is 28 mesh, and the mesh number of fused alumina zirconia abrasive material is 22 mesh, and the hardness of fused alumina zirconia abrasive material is high, and has handle
Other effects are held, so that grinding wheel powder is not easily disconnected from, and the good toughness of brown corundum abrasive, it can be very good the mill for playing itself
Performance is cut, it can be with nearly 4 times of the grinding performance of grinding wheel.
Preferably, the bonding agent includes thermoplastic phenolic resin powder and thermoplastic phenolic resin liquid, wherein thermoplasticity
The parts by weight of phenol-formaldehyde resin powder are 7.8 parts, remaining is thermoplastic phenolic resin liquid, i.e. the parts by weight of thermoplastic phenolic resin liquid are
4.7 parts, thermoplastic phenolic resin liquid is capable of the mixture of fully wrapped around firmly brown corundum abrasive and fused alumina zirconia abrasive material by stirring, and
And thermoplastic phenolic resin powder also can completely be sufficiently mixed uniformly the mixture of brown corundum abrasive and fused alumina zirconia abrasive material it
Between, further, thermoplastic phenolic resin powder is 2180 resin-oatmeals, and thermoplastic phenolic resin liquid is 2190 resin liquids, thermoplasticity
For phenolic resin under heat effect, thermoplastic phenolic resin becomes thermosetting phenolic tree in the case where methenamine is heated
Rouge, so that the hardening of grinding wheel, in use, ice crystal can reduce grinding wheel and is ground and generates when object friction grinding wheel
Heat, to play the role of cooling and heat dissipation.
Embodiment two:
A kind of new type of resin sand grinding wheel factory formula, it includes each component of following parts by weight: 45 parts of brown corundum abrasive；Fused alumina zirconia
65 parts of abrasive material；13.5 parts of bonding agent；Ice crystal is 10.2 parts, and further, brown corundum abrasive and fused alumina zirconia abrasive material are powder,
Wherein the mesh number of brown corundum abrasive is 32 mesh, and the mesh number of fused alumina zirconia abrasive material is 26 mesh, and the hardness of fused alumina zirconia abrasive material is high, and has handle
Other effects are held, so that grinding wheel powder is not easily disconnected from, and the good toughness of brown corundum abrasive, it can be very good the mill for playing itself
Performance is cut, it can be with nearly 4 times of the grinding performance of grinding wheel.
Preferably, the bonding agent includes thermoplastic phenolic resin powder and thermoplastic phenolic resin liquid, wherein thermoplasticity
The parts by weight of phenol-formaldehyde resin powder are 8.2 parts, remaining is thermoplastic phenolic resin liquid, i.e. the parts by weight of thermoplastic phenolic resin liquid are
5.3 parts, thermoplastic phenolic resin liquid is capable of the mixture of fully wrapped around firmly brown corundum abrasive and fused alumina zirconia abrasive material by stirring, and
And thermoplastic phenolic resin powder also can completely be sufficiently mixed uniformly the mixture of brown corundum abrasive and fused alumina zirconia abrasive material it
Between, further, thermoplastic phenolic resin powder is 2180 resin-oatmeals, and thermoplastic phenolic resin liquid is 2190 resin liquids, thermoplasticity
For phenolic resin under heat effect, thermoplastic phenolic resin becomes thermosetting phenolic tree in the case where methenamine is heated
Rouge, so that the hardening of grinding wheel, in use, ice crystal can reduce grinding wheel and is ground and generates when object friction grinding wheel
Heat, to play the role of cooling and heat dissipation.
Embodiment three:
A kind of new type of resin sand grinding wheel factory formula, it includes each component of following parts by weight: 40 parts of brown corundum abrasive；Fused alumina zirconia
60 parts of abrasive material；13 parts of bonding agent；Ice crystal is 10. parts, and further, brown corundum abrasive and fused alumina zirconia abrasive material are powder,
The mesh number of middle brown corundum abrasive is 30 mesh, and the mesh number of fused alumina zirconia abrasive material is 24 mesh, and the hardness of fused alumina zirconia abrasive material is high, and has and hold
Others effect, so that grinding wheel powder is not easily disconnected from, and the good toughness of brown corundum abrasive, it can be very good the grinding for playing itself
Performance, can be with nearly 4 times of the grinding performance of grinding wheel.
Preferably, the bonding agent includes thermoplastic phenolic resin powder and thermoplastic phenolic resin liquid, wherein thermoplasticity
The parts by weight of phenol-formaldehyde resin powder are 8 parts, remaining is thermoplastic phenolic resin liquid, i.e., the parts by weight of thermoplastic phenolic resin liquid are 5
Part, thermoplastic phenolic resin liquid is capable of the mixture of fully wrapped around firmly brown corundum abrasive and fused alumina zirconia abrasive material by stirring, and
Thermoplastic phenolic resin powder also can be completely sufficiently mixed uniformly between brown corundum abrasive and the mixture of fused alumina zirconia abrasive material,
Further, thermoplastic phenolic resin powder is 2180 resin-oatmeals, and thermoplastic phenolic resin liquid is 2190 resin liquids, thermoplastic phenolic
For resin under heat effect, thermoplastic phenolic resin becomes thermosetting phenolic resin in the case where methenamine is heated, from
And make the hardening of grinding wheel, in use, ice crystal can reduce grinding wheel and is ground the heat generated when object friction grinding wheel,
To play the role of cooling and heat dissipation.
Example IV:
A kind of production technology of new type of resin sand grinding wheel, it the following steps are included:
S1: brown corundum abrasive and fused alumina zirconia abrasive material are put into mixing pot by mixing, obtain abrasive material mixture, then by thermoplastic
Property liquid phenolic resin put into mixing pot, then start for the first time stir, when the packet of thermoplastic phenolic resin liquid substantially uniformity
After wrapping abrasive material mixture, mixing pot stops stirring, and further, the time of the first stirring is not less than 15 minutes, then past again
Thermoplastic phenolic resin powder and ice crystal are added in mixing pot, then starts second of stirring, second of mixing time is not less than
It 10 minutes, when after mixing evenly, the mixture in mixing pot is poured out, and is placed in constant temperature blowing room at least 3 hours, at this
In embodiment, the temperature in constant temperature blowing room is 24 degrees Celsius.
S2: abrasive wheel forming, it includes the following steps；
S21: feeding intake for the first time, and first time mixture is first put into abrasive wheel forming mould, places one after mixture booth is even
Glass fiber resin mesh sheet is in the upper surface of first time mixture, and further, the first ratio to feed intake is grinding wheel weight
20%；
S22: feeding intake for the second time, then puts into second of mixture in abrasive wheel forming mould again, places after mixture booth is even
One glass fiber resin mesh sheet is in the upper surface of second of mixture, and further, the ratio to feed intake for the second time is grinding wheel weight
The 40% of amount；
S23: feeding intake for the third time, then puts into abrasive wheel forming mould using remaining grinding wheel raw material as third time mixture again,
When mixture spreads out one glass fiber resin mesh sheet of even placement later in the upper surface of third time mixture；
In the present embodiment, the resin grinding wheels of 400 × 32 × 11mm of specification of production, weight is in 3000 grams, therefore, first
The weight of secondary mixture is 600 grams, and the weight of second of mixture is 1200 grams, and the weight of third time mixture is 1200 grams.
S24: compression moulding is touched the abrasive wheel forming for the completion that feeds intake in S23 and is suppressed, obtains grinding wheel blank；
S3: grinding wheel hardening is heated, thermoplastic phenolic resin is in Wu Luotuo to grinding wheel blank in such a way that electric furnace heats
In the case that product are heated, so that thermoplastic phenolic resin becomes thermosetting phenolic resin, so that grinding wheel hardens, further
, it is preferred that the electric furnace is heated to be slow heating, and for bonding agent at 160 DEG C or less, hardening is incomplete, chemical stability
Difference, when being higher than 200 DEG C, it will damage the mechanical performance of grinding wheel, the intensity, hardness and water resistance of grinding wheel can be made to decline, therefore electricity
Furnace finally heat up after temperature between 180 degrees Celsius ~ 190 degrees Celsius, the heating curve of electric furnace are as follows:
At 70 ~ 80 DEG C, the heating-up time is 2 hours；
At 80 ~ 95 DEG C, the heating-up time is 2 hours；
At 95 ~ 110 DEG C, the heating-up time is 1.5 hours
At 110 ~ 120 DEG C, the heating-up time is 2 hours；
At 120 ~ 130 DEG C, the heating-up time is 2 hours；
At 130 ~ 140 DEG C, the heating-up time is 0.5 hour；
At 140 ~ 150 DEG C, the heating-up time is 0.5 hour；
At 150 ~ 160 DEG C, the heating-up time is 0.5 hour；
At 160 ~ 170 DEG C, the heating-up time is 1.5 hours；
At 170 ~ 180 DEG C, the heating-up time is 0.5 hour；
At 180 ~ 190 DEG C, the heating-up time is 3 hours；
When encountering summer plum rain season, at 160 ~ 170 DEG C, the heating-up time is 3 hours；At 180 ~ 190 DEG C, the heating-up time is
5.5 hours, remaining was constant.
The phenolic resin hardening process first stage is that thermoplastic resin reacts with methenamine, generates and contains dimethylene
The intermediate product of amino bridge :-CH2- NH-CH2, second stage is that the continuation of these products is reacted with molecular resin, is generated huge
The thermosetting resin of big reticular structure, and decomposite ammonia and amine.In hardening process, methenamine not only with thermoplastic phenolic resin
Rouge effect, and acted on free phenol and generate thermosetting resin.This process does not require any catalyst, is heated to certain temperature but
Can carry out.
Thermoplastic phenolic resin+(CH2) 6N4→ thermosetting resin+ammonia
13C6H5OH+(CH2)6N4→+8NH3
The polymerization temperature of thermoplastic phenolic resin is generally 100 degree, it has a curing reaction after 140 degree with curing agent, therefore
It when heating, when will be between 130 ~ 160, be then rapidly heated, so that thermoplastic phenolic resin rests on 180 ~ 190 for a long time
DEG C solidification, to improve the intensity and hardness of grinding wheel.
Embodiment five:
A kind of production technology of new type of resin sand grinding wheel, it the following steps are included:
S1: brown corundum abrasive and fused alumina zirconia abrasive material are put into mixing pot by mixing, obtain abrasive material mixture, then by thermoplastic
Property liquid phenolic resin put into mixing pot, then start for the first time stir, when the packet of thermoplastic phenolic resin liquid substantially uniformity
After wrapping abrasive material mixture, mixing pot stops stirring, and further, the time of the first stirring is not less than 15 minutes, then past again
Thermoplastic phenolic resin powder and ice crystal are added in mixing pot, then starts second of stirring, second of mixing time is not less than
It 10 minutes, when after mixing evenly, the mixture in mixing pot is poured out, and is placed in constant temperature blowing room at least 3 hours, at this
In embodiment, the temperature in constant temperature blowing room is 26 degrees Celsius.
S2: abrasive wheel forming, it includes the following steps；
S21: feeding intake for the first time, and first time mixture is first put into abrasive wheel forming mould, places one after mixture booth is even
Glass fiber resin mesh sheet is in the upper surface of first time mixture, and further, the first ratio to feed intake is grinding wheel weight
25%；
S22: feeding intake for the second time, then puts into second of mixture in abrasive wheel forming mould again, places after mixture booth is even
One glass fiber resin mesh sheet is in the upper surface of second of mixture, and further, the ratio to feed intake for the second time is grinding wheel weight
The 45% of amount；
S23: feeding intake for the third time, then puts into abrasive wheel forming mould using remaining grinding wheel raw material as third time mixture again,
When mixture spreads out one glass fiber resin mesh sheet of even placement later in the upper surface of third time mixture；
In the present embodiment, the resin grinding wheels of 400 × 32 × 11mm of specification of production, weight is in 3000 grams, therefore, first
The weight of secondary mixture is 750 grams, and the weight of second of mixture is 1350 grams, and the weight of third time mixture is 900 grams.
S24: compression moulding is touched the abrasive wheel forming for the completion that feeds intake in S23 and is suppressed, obtains grinding wheel blank；
S3: grinding wheel hardening is heated, thermoplastic phenolic resin is in Wu Luotuo to grinding wheel blank in such a way that electric furnace heats
In the case that product are heated, so that thermoplastic phenolic resin becomes thermosetting phenolic resin, so that grinding wheel hardens, further
, it is preferred that the electric furnace is heated to be slow heating, and for bonding agent at 160 DEG C or less, hardening is incomplete, chemical stability
Difference, when being higher than 200 DEG C, it will damage the mechanical performance of grinding wheel, the intensity, hardness and water resistance of grinding wheel can be made to decline, therefore electricity
Furnace finally heat up after temperature between 180 degrees Celsius ~ 190 degrees Celsius, the heating curve of electric furnace are as follows:
At 70 ~ 80 DEG C, the heating-up time is 2 hours；
At 80 ~ 95 DEG C, the heating-up time is 2 hours；
At 95 ~ 110 DEG C, the heating-up time is 1.5 hours
At 110 ~ 120 DEG C, the heating-up time is 2 hours；
At 120 ~ 130 DEG C, the heating-up time is 2 hours；
At 130 ~ 140 DEG C, the heating-up time is 0.5 hour；
At 140 ~ 150 DEG C, the heating-up time is 0.5 hour；
At 150 ~ 160 DEG C, the heating-up time is 0.5 hour；
At 160 ~ 170 DEG C, the heating-up time is 1.5 hours；
At 170 ~ 180 DEG C, the heating-up time is 0.5 hour；
At 180 ~ 190 DEG C, the heating-up time is 3 hours；
When encountering summer plum rain season, at 160 ~ 170 DEG C, the heating-up time is 3 hours；At 180 ~ 190 DEG C, the heating-up time is
5.5 hours, remaining was constant.
The phenolic resin hardening process first stage is that thermoplastic resin reacts with methenamine, generates and contains dimethylene
The intermediate product of amino bridge :-CH2- NH-CH2, second stage is that the continuation of these products is reacted with molecular resin, is generated huge
The thermosetting resin of big reticular structure, and decomposite ammonia and amine.In hardening process, methenamine not only with thermoplastic phenolic resin
Rouge effect, and acted on free phenol and generate thermosetting resin.This process does not require any catalyst, is heated to certain temperature but
Can carry out.
Thermoplastic phenolic resin+(CH2) 6N4→ thermosetting resin+ammonia
13C6H5OH+(CH2)6N4→+8NH3
The polymerization temperature of thermoplastic phenolic resin is generally 100 degree, it has a curing reaction after 140 degree with curing agent, therefore
It when heating, when will be between 130 ~ 160, be then rapidly heated, so that thermoplastic phenolic resin rests on 180 ~ 190 for a long time
DEG C solidification, to improve the intensity and hardness of grinding wheel.
Embodiment six:
A kind of production technology of new type of resin sand grinding wheel, it the following steps are included:
S1: brown corundum abrasive and fused alumina zirconia abrasive material are put into mixing pot by mixing, obtain abrasive material mixture, then by thermoplastic
Property liquid phenolic resin put into mixing pot, then start for the first time stir, when the packet of thermoplastic phenolic resin liquid substantially uniformity
After wrapping abrasive material mixture, mixing pot stops stirring, and further, the time of the first stirring is not less than 15 minutes, then past again
Thermoplastic phenolic resin powder and ice crystal are added in mixing pot, then starts second of stirring, second of mixing time is not less than
It 10 minutes, when after mixing evenly, the mixture in mixing pot is poured out, and is placed in constant temperature blowing room at least 3 hours, at this
In embodiment, the temperature in constant temperature blowing room is 25 degrees Celsius.
S2: abrasive wheel forming, it includes the following steps；
S21: feeding intake for the first time, and first time mixture is first put into abrasive wheel forming mould, places one after mixture booth is even
Glass fiber resin mesh sheet is in the upper surface of first time mixture, and further, the first ratio to feed intake is grinding wheel weight
23%；
S22: feeding intake for the second time, then puts into second of mixture in abrasive wheel forming mould again, places after mixture booth is even
One glass fiber resin mesh sheet is in the upper surface of second of mixture, and further, the ratio to feed intake for the second time is grinding wheel weight
The 43% of amount；
S23: feeding intake for the third time, then puts into abrasive wheel forming mould using remaining grinding wheel raw material as third time mixture again,
When mixture spreads out one glass fiber resin mesh sheet of even placement later in the upper surface of third time mixture；
In the present embodiment, the resin grinding wheels of 400 × 32 × 11mm of specification of production, weight is in 3000 grams, therefore, first
The weight of secondary mixture is 700 grams, and the weight of second of mixture is 1300 grams, and the weight of third time mixture is 1000 grams.
S24: compression moulding is touched the abrasive wheel forming for the completion that feeds intake in S23 and is suppressed, obtains grinding wheel blank；
S3: grinding wheel hardening is heated, thermoplastic phenolic resin is in Wu Luotuo to grinding wheel blank in such a way that electric furnace heats
In the case that product are heated, so that thermoplastic phenolic resin becomes thermosetting phenolic resin, so that grinding wheel hardens, further
, it is preferred that the electric furnace is heated to be slow heating, and for bonding agent at 160 DEG C or less, hardening is incomplete, chemical stability
Difference, when being higher than 200 DEG C, it will damage the mechanical performance of grinding wheel, the intensity, hardness and water resistance of grinding wheel can be made to decline, therefore electricity
Furnace finally heat up after temperature between 180 degrees Celsius ~ 190 degrees Celsius, the heating curve of electric furnace are as follows:
At 70 ~ 80 DEG C, the heating-up time is 2 hours；
At 80 ~ 95 DEG C, the heating-up time is 2 hours；
At 95 ~ 110 DEG C, the heating-up time is 1.5 hours
At 110 ~ 120 DEG C, the heating-up time is 2 hours；
At 120 ~ 130 DEG C, the heating-up time is 2 hours；
At 130 ~ 140 DEG C, the heating-up time is 0.5 hour；
At 140 ~ 150 DEG C, the heating-up time is 0.5 hour；
At 150 ~ 160 DEG C, the heating-up time is 0.5 hour；
At 160 ~ 170 DEG C, the heating-up time is 1.5 hours；
At 170 ~ 180 DEG C, the heating-up time is 0.5 hour；
At 180 ~ 190 DEG C, the heating-up time is 3 hours；
When encountering summer plum rain season, at 160 ~ 170 DEG C, the heating-up time is 3 hours；At 180 ~ 190 DEG C, the heating-up time is
5.5 hours, remaining was constant.
The phenolic resin hardening process first stage is that thermoplastic resin reacts with methenamine, generates and contains dimethylene
The intermediate product of amino bridge :-CH2- NH-CH2, second stage is that the continuation of these products is reacted with molecular resin, is generated huge
The thermosetting resin of big reticular structure, and decomposite ammonia and amine.In hardening process, methenamine not only with thermoplastic phenolic resin
Rouge effect, and acted on free phenol and generate thermosetting resin.This process does not require any catalyst, is heated to certain temperature but
Can carry out.
Thermoplastic phenolic resin+(CH2) 6N4→ thermosetting resin+ammonia
13C6H5OH+(CH2) 6N4→+8NH3
The polymerization temperature of thermoplastic phenolic resin is generally 100 degree, it has a curing reaction after 140 degree with curing agent, therefore
It when heating, when will be between 130 ~ 160, be then rapidly heated, so that thermoplastic phenolic resin rests on 180 ~ 190 for a long time
DEG C solidification, to improve the intensity and hardness of grinding wheel.
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art,
It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc.
With replacement, all within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in this
Within the protection scope of invention.
Claims (8)
1. a kind of new type of resin sand grinding wheel factory formula, it is characterised in that: it includes each component of following parts by weight:
35 ~ 45 parts of brown corundum abrasive；
55 ~ 65 parts of fused alumina zirconia abrasive material；
12.5 ~ 13.5 parts of bonding agent；
Ice crystal is 9.8 ~ 10.2 parts.
2. a kind of new type of resin sand grinding wheel factory formula according to claim 1, it is characterised in that: the brown corundum abrasive
Mesh number be 28 ~ 32 mesh, the mesh number of the fused alumina zirconia abrasive material is 22 ~ 26 mesh.
3. a kind of new type of resin sand grinding wheel factory formula according to claim 1 and its production technology, it is characterised in that: institute
Stating bonding agent includes thermoplastic phenolic resin powder and thermoplastic phenolic resin liquid, wherein the weight of thermoplastic phenolic resin powder
Part is 7.8 ~ 8.2 parts, remaining is thermoplastic phenolic resin liquid.
4. a kind of production technology of new type of resin sand grinding wheel factory formula as described in claim 1 ~ 3 any one, feature
Be: it the following steps are included:
S1: brown corundum abrasive and fused alumina zirconia abrasive material are put into mixing pot by mixing, obtain abrasive material mixture, then by thermoplastic
Property liquid phenolic resin put into mixing pot, then start for the first time stir, when the packet of thermoplastic phenolic resin liquid substantially uniformity
After wrapping abrasive material mixture, mixing pot stops stirring, and thermoplastic phenolic resin powder and ice crystal is then added in mixing pot again,
Then start second of stirring, when after mixing evenly, the mixture in mixing pot is poured out, and place in constant temperature blowing room to
It is 3 hours few.
S2: abrasive wheel forming, it includes the following steps；
S21: feeding intake for the first time, and first time mixture is first put into abrasive wheel forming mould, places one after mixture booth is even
Glass fiber resin mesh sheet is in the upper surface of first time mixture；
S22: feeding intake for the second time, then puts into second of mixture in abrasive wheel forming mould again, places after mixture booth is even
One glass fiber resin mesh sheet is in the upper surface of second of mixture；
S23: feeding intake for the third time, then puts into third time mixture in abrasive wheel forming mould again, places after mixture booth is even
One glass fiber resin mesh sheet is in the upper surface of third time mixture；
S24: compression moulding is touched the abrasive wheel forming for the completion that feeds intake in S23 and is suppressed, obtains grinding wheel blank；
S3: grinding wheel hardening is heated, thermoplastic phenolic resin is in Wu Luotuo to grinding wheel blank in such a way that electric furnace heats
In the case that product are heated, so that thermoplastic phenolic resin becomes thermosetting phenolic resin, so that grinding wheel hardens.
5. a kind of new type of resin sand grinding wheel production technology according to claim 4, it is characterised in that: in the S1 step,
First time mixing time is not less than 15 minutes, and the time of second of stirring is not less than 10 minutes.
6. a kind of new type of resin sand grinding wheel production technology according to claim 5, it is characterised in that: in the S1 step
The temperature of constant temperature blowing room is between 24 degrees Celsius to 26 degrees Celsius.
7. a kind of new type of resin sand grinding wheel production technology according to claim 6, it is characterised in that: in the S21
One ratio to feed intake is that the ratio to feed intake for the second time in 20% ~ 25%, S22 of grinding wheel weight is the 40% ~ 45% of grinding wheel weight,
The raw material of remaining grinding wheel then feeds intake in S23 for the third time.
8. a kind of new type of resin sand grinding wheel production technology according to claim 7, it is characterised in that: the electric furnace is heated to be
Slowly heating, and electric furnace finally heat up after temperature between 180 degrees Celsius ~ 190 degrees Celsius.
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