CN109238849A - A kind of detection method of vitrified bonded grinding tool performance - Google Patents
A kind of detection method of vitrified bonded grinding tool performance Download PDFInfo
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- CN109238849A CN109238849A CN201811087022.0A CN201811087022A CN109238849A CN 109238849 A CN109238849 A CN 109238849A CN 201811087022 A CN201811087022 A CN 201811087022A CN 109238849 A CN109238849 A CN 109238849A
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- Prior art keywords
- abrasive grain
- sample
- bonding agent
- grinding tool
- power
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/36—Embedding or analogous mounting of samples
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/36—Embedding or analogous mounting of samples
- G01N2001/366—Moulds; Demoulding
Abstract
The invention discloses a kind of detection methods of vitrified bonded grinding tool performance, belong to grinding materials and grinding tool technical field.Have main steps that: assembly mold simultaneously puts into vitrified bond, compacting；One of horizontal line mark is done as center line using the centre of sphere of single corundum ball abrasive grain that radius is R millimeters, and draws lower twice mark again at away from horizontal line 2/3R millimeter；The middle position of the lower end insertion bonding agent block of the abrasive grain marked, and the upper endmarker of abrasive grain is made to be completely forced into bonding agent block；Solidification, demoulding, polishing treatment；Sample is placed on universal testing machine and is tested, and analyzes the stress-strain diagram of said sample, and the power obviously deformed occurs for record sample, i.e. abrasive grain is from power needed for the moment broken in bonding agent.Beneficial effect is: easy to operate, time saving and energy saving, test result is accurate；It solves holding power and is difficult to problem measured directly, to prepare efficient, high speed, high-accuracy grinding tool provides theoretical direction.
Description
Technical field
The invention patent relates to grinding materials and grinding tool technical field, especially a kind of vitrified bond is to alumina grain holding power
Detection method.
Background technique
Vitrified bonded grinding tool has that intensity is high, heat resistance is good, blocking is not susceptible in grinding process, thermal expansion amount is small
Etc. characteristics, be widely used in every field.With the development of science and technology, grinding tool industry also has higher requirement, in future
Development process in, vitrified bonded grinding tool has better application prospect due to its unique excellent properties, but it is insufficient
Place is that bonding agent is insufficient to the holding power of abrasive grain during use for grinding tool, and abrasive grain is caused to be easy to fall off.
The performance of grinding tool mainly includes the tissue of grade of abrasive tool, grinding tool intensity and grinding tool, wherein grade of abrasive tool reflection knot
Mixture holds the ability of abrasive grain, mainly related with the property of bonding agent and quantity and compact density, heat treatment process etc..
Holding power refers to the active force that the bonding agent being subject on abrasive material unit area prevents abrasive material from falling off from grinding tool, mainly
Including physical attachment power, cast setting power and chemical bond force.Physical attachment power refers to the model moral between bonding agent and abrasive grain molecule
Hua Li, binding force is very weak, 1~2 order of magnitude smaller than the bond energy of chemical bond.Cast setting power refers to that bonding agent plates abrasive grain
It acts on and plays the role of holding to abrasive grain, mainly determined by the intensity of bonding agent and hardness.Chemical binding force refer to bonding agent with
Abrasive grain is in the chemical bond force that certain temperature issues biochemical react with pressure and generates, including ionic bond, covalent bond, metallic bond
Deng.Such binding force can be usually reached several hundred megapascal, can effectively hold abrasive grain.
If bonding agent is insufficient to the holding power of abrasive material, under the action of cutting force, abrasive grain will be easily from combination
It falls off in agent, and cooled liquid band is walked, i.e. the early fallout of abrasive material；If bonding agent is excessive to the holding power of abrasive material, new
Grinding sword is not easy exposure, causes grinding tool sharpness inadequate, causes grinding tool self-sharpening poor.
Holding power between currently used vitrified bond and abrasive material is mostly derived from mechanical holding, improves the side of holding power
There are mainly two types of for method: one is the surface state for changing abrasive material, i.e., carry out plating to abrasive material or in abrasive surface
Coated film etc. changes the surface roughness of abrasive material；Another kind is by adding alkaline-earth metal oxide in basic bonding agent
Object, rare earth oxide, nano particle and additive etc. improve the performance of vitrified bond, the especially high temperature of vitrified bond
Mobility and high-temperature moisture.
It is the key technology of manufacture high-performance grinding tool that bonding agent, which has suitable holding power to abrasive grain, but at present to holding power
Measurement be based only on the analysis system of tensile strength test, do not provide the evaluation index in some amount, therefore, it is necessary to
Holding power is characterized and is calculated, so that bonding agent has suitable holding power to abrasive grain, could obtain has the service life in this way
Grinding tool long, self-sharpening is good, and then manufacture high speed, efficient, high-accuracy grinding tool.
Summary of the invention
The object of the present invention is to provide a kind of vitrified bonds to the detection method of abrasive grain holding power, and realization passes through adjusting
Holding power regulates and controls abrasive article structures, performance, obtains the grinding tool with suitable holding power, and solving holding power can not directly measure
Problem, for prepare efficiently, high speed, high-accuracy grinding tool theoretical direction is provided.
Purpose to realize the present invention, is achieved using following technical scheme:
A, assembly mold and vitrified bond is put into, is compacted with pressing plate.
B, the centre of sphere for single corundum ball abrasive grain for being R millimeters using radius does one of horizontal line mark as center line, and away from
Horizontal line draws lower twice mark at 2/3R millimeters of positions again.
C, by the middle position of the vitrified bond block in the lower end inserting step a of the good abrasive grain of above-mentioned label, and make
The upper endmarker of abrasive grain is completely forced into bonding agent block.
D, above-mentioned assembled mold band mould is carried out to solidify.
E, it is polished after demoulding taking-up sample, polishing treatment.
F, said sample is placed on universal testing machine and is tested, the pressure head of testing machine is made to be pressed in the center meta position of abrasive grain
It sets, i.e., power vertically downward is applied to the abrasive grain of exposing.
G, the stress-strain diagram of said sample is analyzed, the power that obviously deforms occurs for record sample, i.e. abrasive grain is from bonding agent
In power needed for moment for breaking.
Holding power indicate bonding agent can secure bond abrasive grain and guarantee power required when abrasive grain is not fallen off, in this test
Pressure value is to indicate abrasive grain from power needed for the moment broken in bonding agent, therefore available pressure value characterizes bonding agent to abrasive grain
Holding power.
The beneficial effects of the present invention are:
1. characterizing bonding agent with pressure value to the size of abrasive grain bonding streng, solves holding power and be difficult to problem measured directly.
2. using universal testing machine, keep measurement result more acurrate, it is easy to operate and time saving and energy saving.
3. the base of grinding tool preparation can be solved by preparing the grinding tool of required structure and performance to the regulation of holding power
Plinth matter of science and technology, to prepare efficient, high speed, high-accuracy grinding tool provides theoretical direction.
Detailed description of the invention
Attached drawing 1 is pressure experiment sample structure schematic diagram, is made of vitrified bond (1), corundum ball abrasive grain (2).
Specific embodiment
The invention combination following specific embodiments are described further:
Embodiment 1:
A, 15 grams of Al of assembly mold and investment2O3-Na2O-B2O3-SiO2Basic vitrified bond, is compacted with pressing plate.
B, the centre of sphere for single corundum ball abrasive grain for being 1 millimeter using radius does one of horizontal line mark as center line, and away from
Lower twice mark is drawn again at from 2/3 millimeter of horizontal line.
C, by the center meta position of the vitrified bond block in the lower end inserting step a of the good corundum ball abrasive grain of above-mentioned label
It sets, and the upper endmarker of abrasive grain is made to be completely forced into bonding agent block.
D, above-mentioned assembled mold band mould is carried out to solidify, i.e., under the heating rate of 5 DEG C/min from room temperature to
250 DEG C and heat preservation 1 hour, it is warming up to 250 DEG C under the heating rate of 4.5 DEG C/min and keeps the temperature 2 hours, 5.5 DEG C/min's
It is warming up to 720 DEG C under heating rate and keeps the temperature 2.5 hours, is cooled to room temperature, obtains ceramic bond diamond coupon.
E, it is polished said sample, polishing treatment, is placed on universal testing machine and carries out pressure experiment, even if test
The pressure head of machine is pressed in the middle position of abrasive grain, i.e., applies power vertically downward to the corundum ball of exposing.
F, the stress-strain diagram of said sample is analyzed, the power that obviously deforms occurs for record sample, i.e. abrasive grain is from bonding agent
In power needed for moment for breaking.
Embodiment 2:
A, 15 grams of Al of assembly mold and investment2O3-Na2O-B2O3-SiO2Basic vitrified bond, is compacted with pressing plate.
B, the centre of sphere for single corundum ball abrasive grain for being 2 millimeters using radius does one of horizontal line mark as center line, and away from
Lower twice mark is drawn again at from 4/3 millimeter of horizontal line.
C, by the center meta position of the vitrified bond block in the lower end inserting step a of the good corundum ball abrasive grain of above-mentioned label
It sets, and the upper endmarker of abrasive grain is made to be completely forced into bonding agent block.
D, above-mentioned assembled mold band mould is carried out to solidify, i.e., under the heating rate of 5 DEG C/min from room temperature to
250 DEG C and heat preservation 1 hour, it is warming up to 250 DEG C under the heating rate of 4.5 DEG C/min and keeps the temperature 2 hours, 5.5 DEG C/min's
It is warming up to 720 DEG C under heating rate and keeps the temperature 2.5 hours, is cooled to room temperature, obtains ceramic bond diamond coupon.
E, it is polished said sample, polishing treatment, is placed on universal testing machine and carries out pressure experiment, even if test
The pressure head of machine is pressed in the middle position of abrasive grain, i.e., applies power vertically downward to the corundum ball of exposing.
F, the stress-strain diagram of said sample is analyzed, the power that obviously deforms occurs for record sample, i.e. abrasive grain is from bonding agent
In power needed for moment for breaking.
Embodiment 3:
A, 15 grams of Al of assembly mold and investment2O3-Na2O-B2O3-SiO2Basic vitrified bond, is compacted with pressing plate.
B, the centre of sphere for single corundum ball abrasive grain for being 3 millimeters using radius does one of horizontal line mark as center line, and away from
Lower twice mark is drawn again at from 2 millimeters of horizontal line.
C, by the center meta position of the vitrified bond block in the lower end inserting step a of the good corundum ball abrasive grain of above-mentioned label
It sets, and the upper endmarker of abrasive grain is made to be completely forced into bonding agent block.
D, above-mentioned assembled mold band mould is carried out to solidify, i.e., under the heating rate of 5 DEG C/min from room temperature to
250 DEG C and heat preservation 1 hour, it is warming up to 250 DEG C under the heating rate of 4.5 DEG C/min and keeps the temperature 2 hours, 5.5 DEG C/min's
It is warming up to 720 DEG C under heating rate and keeps the temperature 2.5 hours, is cooled to room temperature, obtains ceramic bond diamond coupon.
E, it is polished said sample, polishing treatment, is placed on universal testing machine and carries out pressure experiment, even if test
The pressure head of machine is pressed in the middle position of abrasive grain, i.e., applies power vertically downward to the corundum ball of exposing.
F, the stress-strain diagram of said sample is analyzed, the power that obviously deforms occurs for record sample, i.e. abrasive grain is from bonding agent
In power needed for moment for breaking.
Embodiment 4:
A, 15 grams of CaO-MgO-Al of assembly mold and investment2O3-SiO2Basic vitrified bond, is compacted with pressing plate.
B, the centre of sphere for single corundum ball abrasive grain for being 1 millimeter using radius does one of horizontal line mark as center line, and away from
Lower twice mark is drawn again at from 2/3 millimeter of horizontal line.
C, by the center meta position of the vitrified bond block in the lower end inserting step a of the good corundum ball abrasive grain of above-mentioned label
It sets, and the upper endmarker of abrasive grain is made to be completely forced into bonding agent block.
D, above-mentioned assembled mold band mould is carried out to solidify, i.e., under the heating rate of 5 DEG C/min from room temperature to
250 DEG C and heat preservation 1 hour, it is warming up to 250 DEG C under the heating rate of 4.5 DEG C/min and keeps the temperature 2 hours, 5.5 DEG C/min's
It is warming up to 720 DEG C under heating rate and keeps the temperature 2.5 hours, is cooled to room temperature, obtains ceramic bond diamond coupon.
E, it is polished said sample, polishing treatment, is placed on universal testing machine and carries out pressure experiment, even if test
The pressure head of machine is pressed in the middle position of abrasive grain, i.e., applies power vertically downward to the corundum ball of exposing.
F, the stress-strain diagram of said sample is analyzed, the power that obviously deforms occurs for record sample, i.e. abrasive grain is from bonding agent
In power needed for moment for breaking.
Embodiment 5:
A, 15 grams of CaO-MgO-Al of assembly mold and investment2O3-SiO2Basic vitrified bond, is compacted with pressing plate.
B, the centre of sphere for single corundum ball abrasive grain for being 2 millimeters using radius does one of horizontal line mark as center line, and away from
Lower twice mark is drawn again at from 4/3 millimeter of horizontal line.
C, by the center meta position of the vitrified bond block in the lower end inserting step a of the good corundum ball abrasive grain of above-mentioned label
It sets, and the upper endmarker of abrasive grain is made to be completely forced into bonding agent block.
D, above-mentioned assembled mold band mould is carried out to solidify, i.e., under the heating rate of 5 DEG C/min from room temperature to
250 DEG C and heat preservation 1 hour, it is warming up to 250 DEG C under the heating rate of 4.5 DEG C/min and keeps the temperature 2 hours, 5.5 DEG C/min's
It is warming up to 720 DEG C under heating rate and keeps the temperature 2.5 hours, is cooled to room temperature, obtains ceramic bond diamond coupon.
E, it is polished said sample, polishing treatment, is placed on universal testing machine and carries out pressure experiment, even if test
The pressure head of machine is pressed in the middle position of abrasive grain, i.e., applies power vertically downward to the corundum ball of exposing.
F, the stress-strain diagram of said sample is analyzed, the power that obviously deforms occurs for record sample, i.e. abrasive grain is from bonding agent
In power needed for moment for breaking.
Embodiment 6:
A, 15 grams of CaO-MgO-Al of assembly mold and investment2O3-SiO2Basic vitrified bond, is compacted with pressing plate.
B, the centre of sphere for single corundum ball abrasive grain for being 3 millimeters using radius does one of horizontal line mark as center line, and away from
Lower twice mark is drawn again at from 2 millimeters of horizontal line.
C, by the center meta position of the vitrified bond block in the lower end inserting step a of the good corundum ball abrasive grain of above-mentioned label
It sets, and the upper endmarker of abrasive grain is made to be completely forced into bonding agent block.
D, above-mentioned assembled mold band mould is carried out to solidify, i.e., under the heating rate of 5 DEG C/min from room temperature to
250 DEG C and heat preservation 1 hour, it is warming up to 250 DEG C under the heating rate of 4.5 DEG C/min and keeps the temperature 2 hours, 5.5 DEG C/min's
It is warming up to 720 DEG C under heating rate and keeps the temperature 2.5 hours, is cooled to room temperature, obtains ceramic bond diamond coupon.
E, it is polished said sample, polishing treatment, is placed on universal testing machine and carries out pressure experiment, even if test
The pressure head of machine is pressed in the middle position of abrasive grain, i.e., applies power vertically downward to the corundum ball of exposing.
F, the stress-strain diagram of said sample is analyzed, the power that obviously deforms occurs for record sample, i.e. abrasive grain is from bonding agent
In power needed for moment for breaking.
Claims (2)
1. a kind of vitrified bond is to the detection method of grinding tool performance, it is characterised in that realized by following steps:
A, assembly mold and vitrified bond is put into, is compacted with pressing plate；
B, the centre of sphere for single corundum ball abrasive grain for being R millimeters using radius does one of horizontal line mark as center line, and away from level
Line draws lower twice mark at 2/3R millimeters of positions again；
C, by the middle position of the vitrified bond block in the lower end inserting step a of the good abrasive grain of above-mentioned label, and make abrasive grain
Upper endmarker be completely forced into bonding agent block；
D, above-mentioned assembled mold band mould is carried out to solidify；
E, it is polished after demoulding taking-up sample, polishing treatment；
F, said sample is placed on universal testing machine and is tested, the pressure head of testing machine is made to be pressed in the middle position of abrasive grain；
G, the stress-strain diagram of said sample is analyzed, the power obviously deformed occurs for record sample.
2. detection method according to claim 1, it is characterised in that: corundum ball Abrasive Particle Size >=0.5mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811087022.0A CN109238849A (en) | 2018-09-18 | 2018-09-18 | A kind of detection method of vitrified bonded grinding tool performance |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811087022.0A CN109238849A (en) | 2018-09-18 | 2018-09-18 | A kind of detection method of vitrified bonded grinding tool performance |
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Application publication date: 20190118 |