CN104502215A - Wear test device and wear test method - Google Patents
Wear test device and wear test method Download PDFInfo
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- CN104502215A CN104502215A CN201510007868.9A CN201510007868A CN104502215A CN 104502215 A CN104502215 A CN 104502215A CN 201510007868 A CN201510007868 A CN 201510007868A CN 104502215 A CN104502215 A CN 104502215A
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Abstract
The invention discloses a wear test device. The wear test device comprises a weight, a driving motor, a grinding wheel arranged on a rotating shaft of the driving motor, and a lever mechanism arranged at one side of the grinding wheel by virtue of a loading shaft as well as a first spraying water pipe arranged above the grinding wheel at one side close to the lever mechanism, wherein the lever mechanism is composed of a cross rod and a vertical rod, a loading rod is arranged below the cross rod, a weight mounting hole is formed in one end of the cross rod far away from the vertical rod, the weight is loaded on the cross rod by virtue of the weight mounting hole, a sample mounting hole is formed in the part, close to the grinding wheel, of the vertical rod, and the sample mounting hole is toward the grinding wheel, a water spraying hole of the first spraying water pipe is toward the grinding wheel, and the lever mechanism is of an L-shaped structure which is composed of the cross rod and the vertical rod in an integrated manner. The wear test device has the characteristics that multiple low stress scratch wear environments are provided, a test result is effective and accurate, test cost is low and maintenance is convenient.
Description
Technical field
The present invention relates to material properties test analysis technical field, be specifically related to a kind of abrasion test device and test method.
Background technology
The structural member of plant equipment, long-term work is in stress abrasion environment.Before structure member comes into operation, need to make material to it and carry out antiwear property test, measured the wearing quality of metal material by wear test, wherein, the making material require of major part structural member carries out anti-low stress and scratches wear test.Wear test comprises wear test in kind and sample wear test, and because sample wear test has lower experimentation cost, therefore it is main wear test mode.In sample wear test, the wear extent of sample is directly proportional to contact, frictional distance, is inversely proportional to material hardness.
Low stress scratches formula wearing and tearing, and refer to that stress that abrasive material acts on piece surface is no more than the crushing strength of abrasive material, material surface can slightly be scratched.Ploughshare in using, the scraper conveyor chute in coal mine machinery, the wearing and tearing be subject to belong to low stress and scratch formula wearing and tearing; The broken formula wearing and tearing of heavily stressed rolling, refer to that the maximum crushing stress of abrasive material and piece surface contact position is greater than the crushing strength of abrasive material.Ball grinding machine lining board and abrading-ball in production, the wearing and tearing of crushing type rotary drum, the wearing and tearing of wheel grinding processing parts part belong to the broken formula wearing and tearing of heavily stressed rolling.
First the wear test of structured material needs the specific works condition of consideration component and determines wear form, then selected suitable test method, to make test findings and actual result comparatively identical.If publication number is the Chinese patent literature of CN201803913U, the abrasion tester can simulating Sizing Crusher operating mode is not had in prior art, a kind of wear tester for impact abrasive material is disclosed, comprise emery wheel A1 and the leverage being positioned at emery wheel A1 side, leverage comprises montant A7 and cross bar A4, one cam A5 is installed below cross bar A4, the montant A7 being positioned at cross bar two ends is equipped with Sample A 8 and counterweight A6 respectively; Be provided with abrasive material sand hopper A2 above emery wheel A1, this abrasive material sand hopper A2 bottom discharging port A 9 is placed between emery wheel 1 and Sample A 8.This technical scheme adopts emery wheel A1 and abrasive material to directly act on sample, obviously this wear tester for impact abrasive material belongs to the broken formula abrasion tester of heavily stressed rolling, the heavily stressed scuffing wear resistance that can only be used for material measures, as the crushing teeth of Sizing Crusher, the cutter head of lathe tools, the anti-low stress not being suitable for structured material scratches wear resistance and measures, and does not also mention that the anti-low stress how this wear tester for impact abrasive material being used for structured material scratches wear resistance and measures in this patent documentation.
The anti-low stress of structured material is scratched wear resistance and is measured by the wheeled wear test of damp sand rubber.The wheeled wear test of damp sand rubber adopts the MLS-225 wheeled abrasion tester of type damp sand rubber usually.The wheeled abrasion tester of damp sand rubber comprises sample groove B4, is arranged on the rubber wheel B1 be connected with drive motor axle in sample groove B4, be positioned at rubber wheel B1 side and be provided with leverage B2, the leverage B2 position concordant with rubber wheel B1 is provided with sample fixing device B6, sample B 7 is installed on sample fixing device B6, sample fixing device B6 and sample B 7 are all arranged in sample groove B4, also be injected with the abrasive material B5 mixed by frosted and water or other liquid in sample groove B4, the load link of leverage B2 is provided with load means B3.During use, first abrasive material B5 is injected sample groove B4, again load is loaded to leverage B2, sample is allowed to be adjacent to rubber wheel B1, then motor drives rubber wheel B1, rubber wheel B1 drives the abrasive material B5 such as ore in sand form, sandstone, silt mixed with water to produce various material to wear and tear, thus carries out abrasion test to material.The wheeled abrasion tester of this damp sand rubber comes, the parameters such as the rotating speed due to rubber wheel B1 and the normal pressure to sample applying can change, therefore it can simulate various operating mode well, can be mining machinery, the all trades and professions such as building machinery, mining machinery, Transport Machinery, agricultural machinery, carry out the shaker test of high-abrasive material.
But there is following technical matters in this abrasion tester: rubber wheel B1 is made up of circular ring type metallic matrix and the rubber layer that is attached to circular ring type metallic matrix outer ring, for a long time need not after, rubber layer can produce aging, causes rubber wheel B1 to scrap.The Shao Er hardness of rubber tire B1 needs to reach nominal value, when meeting nominal value, need repair rubber wheel with abrasive paper for metallograph.After rubber wheel B1 diameter may wear to be less than 174mm from 178mm, need to scrap to renew.The frosted of abrasive material B5, only adopts 50 order ~ 70 object frosteds, when making abrasive material B5, needs to sieve frosted; Every part sample B 7 needs through " pre-grinding " and " official test " two processes when testing, each process uses 1.5kg frosted, and every part sample needs 3.0kg frosted altogether, not reproducible use.
Therefore, adopt the wheeled abrasion tester of above-mentioned damp sand rubber to carry out wear test, the use cost of rubber wheel B1 and frosted is all higher, and the experimentation cost particularly only carrying out the wear test several times of negligible amounts is for a long time higher.
In sum, prior art when the anti-low stress carrying out structured material scratches wear resistance, exist and need often to measure rubber wheel B1, testing equipment uses formality many, and consumptive material use is many, the technical matters that experimentation cost is high.Therefore, need a kind of use simply, working strength is little, the abrasion test device that consumable material is few.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of rubber wheel that do not use as the abrasion test device of wear test parts, thus reduces the use cost of abrasion test device further, improves the ease for use of abrasion test device.
The technical scheme that technical solution problem of the present invention adopts is:
Abrasion test device, comprising counterweight, drive motor, the emery wheel be arranged in drive motor rotating shaft, being arranged on the leverage of emery wheel side by loading axle, leverage is made up of cross bar and montant, the below of cross bar is provided with load bar, cross bar is provided with counterweight carry hole away from one end of montant, counterweight is carried on cross bar by counterweight carry hole, offers sample installing port at montant near emery wheel part, and sample installing port is towards emery wheel; Also comprise the first spray header be arranged on directly over the emery wheel of leverage side, the water jet of the first spray header is towards emery wheel, and leverage is by cross bar and the integrated L-type structure of montant.
Further, abrasion test device, also comprises the second spray header, and the second spray header is arranged on away from directly over the emery wheel of leverage side, and the water jet of the second spray header is towards emery wheel.
Further, the cross sectional shape of the first spray header and the second spray header water jet is square.
Further, the water jet of the first spray header and the second spray header is the thickness of emery wheel along the width in grinding wheel thickness direction.
Further, abrasion test device, also comprises control device for pivoting and is arranged on the other revolution counter of drive motor rotating shaft, revolution counter electrical connection control device for pivoting, control device for pivoting electrical connection drive motor.
Further, abrasion test device, also comprises waterproof cover, and waterproof cover is arranged on the top of the first spray header water jet and the second spray header water jet.
The present invention also provides a kind of wear test test method, and the method adopts abrasion test device of the present invention to carry out wear test, comprises the following steps:
Step 1, sample are installed: lift load bar, allow cross bar relative level line rotate up, montant leaves emery wheel, is installed in by sample in sample installing port;
Step 2, sample pre-grinding: choose side crops industry counterweight, by its carry on cross bar, open drive motor power supply, after grinding wheel speed is stable, puts down load bar, allow sample contact with emery wheel under the moment loading of counterweight, pre-grinding sample; After sample occurring obvious polishing scratch, close drive motor, lift load bar, from sample installing port, take out sample, after sample cleaning is dried up, the quality after weighed amount pre-grinding;
Step 3, wear test: by the sample after weighing, be installed in sample installing port according to mounting means during pre-grinding, the counterweight of carry operating load on cross bar, open drive motor, after motor speed to be driven is stable, open the first spray header, water is allowed to rinse emery wheel, after the discharge of the first spray header ejection is stable, put down load bar, sample is allowed to contact with emery wheel under the moment loading of counterweight, emery wheel number of revolutions is counted simultaneously, after emery wheel number of revolutions reaches predetermined value, close drive motor power supply, close the first spray header, lift load bar and take out sample from sample installing port,
Step 4, determine wear extent: the sample cleaning after wear test dried up, the quality after weighed amount wear test, deducts the quality after sample wear test by the quality after sample pre-grinding, just obtains the wear extent of sample.
Further, emery wheel number of revolutions is counted, after emery wheel number of revolutions reaches predetermined value, closing drive motor power supply is, on drive motor rotating shaft side, revolution counter is set, control device for pivoting is set between drive motor and revolution counter, revolution counter electrical connection control device for pivoting, control device for pivoting electrical connection drive motor; The revolution counter being arranged on drive motor rotating shaft side is adopted to count emery wheel number of revolutions, when count value reaches predetermined value, revolution counter signals to the control device for pivoting be electrically connected with it, and control device for pivoting closes the drive motor be electrically connected with it.
The anti-low stress that abrasion test device of the present invention and test method are applicable to structured material scratches wear resistance test.
Compared with prior art, the invention has the beneficial effects as follows:
1, abrasion test device of the present invention, jointly provide multiple low stress to scratch abrasion environment for sample due to what adopt the emery wheel being provided with the first spray header in upper end, side and the leverage being loaded with counterweight, thus guarantee the validity of sample wear test result and the property assessed; Owing to adopting emery wheel and water to replace frosted and rubber wheel to carry out wear test as grinding tool, save the use of frosted consumptive material, also there is no the technical matters that rubber wheel loss is large, operation and maintenance cost is high.Because emery wheel has higher design and operation rotating speed, scratch the grinding tool of wear test with it as low stress, there is longer serviceable life and lower use cost.
2, abrasion test device of the present invention, to cooperatively interact flushing emery wheel away from the second spray header and the first spray header directly over the emery wheel of leverage side owing to adopting to be arranged on, thus improve rinsing quality and the flush efficiency of emery wheel further, guarantee that the wearing and tearing of emery wheel to sample remain under low stress scratches environment and carry out; Owing to adopting revolution counter and control device for pivoting coordinated statistics and controlling emery wheel to the wearing and tearing workload of sample, thus improve the controllability of wear test further, the validity of test findings and the property assessed.
3, abrasion test method of the present invention, in advance heavily stressed sample pre-grinding is carried out to sample owing to adopting, remove smooth can not the surface portion of true reflect structure material wear-resistant performance, again wear test is carried out to sample, the test findings measured, more can reflect that the anti-low stress of sample scratches wear resistance effectively; Owing to adopting revolution counter to count emery wheel number of revolutions, adopt control device for pivoting to close drive motor according to the count results of revolution counter, thus improve the controllability of wear test further, the validity of test findings and the property assessed.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
The structural representation of the wear tester for impact abrasive material of the CN201803913U that Fig. 2 is.
Fig. 3 is the structural representation of the wheeled abrasion tester working portion of damp sand rubber.
Fig. 4 is the implementing procedure figure of abrasion test method of the present invention.
The Reference numeral of Fig. 1 is expressed as: 1-emery wheel, 2-leverage, and 3-loads axle, 4-counterweight, 5-first spray header, 6-second spray header, 7-load bar, 8-waterproof cover, 9-sample, 201-cross bar, 202-montant, 203-counterweight carry hole, 204-sample installing port.
The Reference numeral of Fig. 2 is expressed as: A1-emery wheel, A2-abrasive material sand hopper, A3-rotating shaft, A4-cross bar, A5-cam, A6-counterweight, A-montant, A8-sample, A9-discharging opening.
The Reference numeral of Fig. 3 is expressed as: B1-rubber wheel, B2-leverage, B3-load means, B4-sample groove, B5-abrasive material, B6-sample fixing device, B7-sample.
Arrow mark in Fig. 1 to Fig. 3 is expressed as: turning to of rubber wheel or emery wheel.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
As shown in Figure 1, abrasion test device of the present invention, comprise counterweight 4, drive motor, the emery wheel 1 be arranged in drive motor rotating shaft, pass through to load the leverage 2 that axle 3 is arranged on emery wheel 1 side, leverage 2 is made up of cross bar 201 and montant 202, load bar 7 is provided with below cross bar 201, cross bar 201 is provided with counterweight carry hole 203 away from one end of montant 202, counterweight 4 is carried on cross bar 201 by counterweight carry hole 203, offer sample installing port 204 at montant 202 near emery wheel 1 part, sample installing port 204 is towards emery wheel 1; Also comprise the water jet of the first spray header 5, first spray header 5 be arranged on directly over the emery wheel 1 of leverage 2 side towards emery wheel 1, leverage 2 is by cross bar 201 and the integrated L-type structure of montant 202.
During the invention process, also comprise the pipe valve be arranged on the first spray header 5.
As shown in Figure 1, those skilled in the art, select the cross bar 201 of certain length and montant 202 that they are welded to connect l-shaped structure, certainly also directly can intercept certain length respectively from the both sides of the industry profile of L-type structure and obtain; Offer at cross bar 201 and montant 202 junction and load axle 3 mounting hole, offer counterweight carry hole 203 at cross bar 201 away from one end of montant 202.
As shown in Figure 1, those skilled in the art, select a position to arrange drive motor, the rotating shaft of drive motor arrange emery wheel 1, arrange and load axle 3 above emery wheel 1 side, by loading axle 3, leverage 2 are arranged on emery wheel 1 side; Below the cross bar 201 of leverage 2, arrange load bar 7, lift load bar 7, cross bar 201 can rotate up by relative level line, puts down load bar 7, and cross bar 201 can be rotated down by relative level line, and usual load bar 7 makes cross bar 201 keep horizontal level; By counterweight carry hole 203 by counterweight carry below cross bar 201; Offer in emery wheel 1 part towards the sample installing port 204 of emery wheel 1 at montant 202; Directly over the emery wheel 1 near leverage 2 side, first spray header 5 of water jet towards emery wheel 1 is set; Abrasion test device of the present invention is can be made into by aforesaid operations.
During use, first according to the structural member environment for use of required simulation, determine the operating load of counterweight 4, meanwhile, weigh up front sample 9 quality of wearing and tearing; Then load bar 7 is lifted, cross bar 201 relative level line is allowed to rotate up, montant 202 leaves emery wheel 1, sample 9 is installed in sample installing port 204, putting down load bar 7 allows cross bar 201 relative level line be rotated down, montant 202 with sample near emery wheel 1, after sample 9 contacts with emery wheel, by counterweight carry hole 203 by counterweight 4 carry of operating load below cross bar 201; Lift load bar 7, allow cross bar 201 be horizontal, at this moment sample 9 does not contact with emery wheel 1; Then the power supply of drive motor is opened, drive motor drives emery wheel 1 to rotate, when after emery wheel stability of rotation, open the pipe valve on the first spray header 5, allow water rinse emery wheel 1, until the first spray header 5 rinse the discharge of emery wheel stable after, put down load bar 7, sample 9 contacts with emery wheel 1, writes down duration of contact and puts and motor speed; The rotation friction of the relative sample 9 of emery wheel 1 weares and teares to sample, and the temperature of emery wheel 1 and sample synchronously raises, and ground stock is washed from emery wheel or sample by the water sprayed from the first spray header 5, lowers the temperature to emery wheel and sample simultaneously; When sample may wear to a certain degree, close drive motor, write down disable motor time point, close the pipe valve on the first spray header 5, lift load bar 7, take off sample 9 from sample installing port 204; Cleaning dries up sample 9, weighs up rear sample 9 quality of wearing and tearing.Before wearing and tearing, sample 9 quality is wear extent with the difference of rear sample 9 quality of wearing and tearing.
Extrapolated the wear coefficient of sample 9 by wear extent, wearing-in period, drive motor rotating speed, counterweight weight, assess so that scratch wear resistance to the anti-low stress of this structured material.
It is more than the implementation process of basic embodiment of the present invention.As can be seen from above-mentioned implementation process, the leverage 2 being loaded with counterweight 4 has the technical role of the applied stress environment of simulation various structures part, thus reduces the cost of structural member wear test, guarantees the validity of test findings, first spray header 5 has ejection water and rinses out the ground stock sticked on sample 9 or emery wheel 1, sample 9 and emery wheel 1 are lowered the temperature, lubrication sample 9 and emery wheel 1, reduce the technical role of the friction stree between emery wheel 1 and sample 9, sample 9 test undertaken by abrasion test device of the present invention is that low stress scratches wear test, thus guarantees the validity of sample 9 wear test result, the emery wheel 1 being provided with the first spray header 5 in upper end, side has for sample provides low stress to scratch the technical role of abrasive manner, rubber wheel is adopted to add the abrasive manner of water milling mixed liquor compared to prior art, emery wheel 1 adds water provides low stress to scratch abrasive manner, the use cost of frosted can be saved, emery wheel 1 comparatively rubber wheel uses more stable, convenient, be easy to safeguard, loss is little, use cost is lower, adopt emery wheel 1 to add water provides low stress to scratch abrasive manner simultaneously, the assessment of the wearing and tearing key element of sample 9 is simpler, more be conducive to the assessment that the anti-low stress of sample 9 scratches wear resistance.
See on the whole, each building block of abrasion test device of the present invention, interrelated technically, use cooperatively interacts.Jointly provide multiple low stress to scratch abrasion environment for sample 9 due to what adopt the emery wheel 1 being provided with the first spray header 5 in upper end, side and the leverage 2 being loaded with counterweight 4, thus guarantee the validity of sample 9 wear test result; This low stress scratches abrasion environment, saves the use of frosted, and the assessment of the wearing and tearing key element of sample 9 is simpler, is more conducive to the assessment that the anti-low stress of sample 9 scratches wear resistance; This low stress scratches abrasion environment, and due to without rubber wheel, also just do not have rubber wheel to need often to safeguard, loss is large, the technical matters that use cost is high.Because emery wheel 1 has higher design and operation rotating speed, scratch the grinding tool of wear test with it as low stress, there is longer serviceable life and lower use cost.
Be arranged on the first spray header 5 directly over the emery wheel 1 of leverage 2 side, because its setting position limits, can not effectively rush except the ground stock on emery wheel 1, ground stock sticks to the scuffing stress that emery wheel can improve emery wheel 1 pair of sample 9.In order to effectively remove the ground stock on emery wheel 1, the temperature of timely reduction emery wheel, the present invention is further improved on the basis of basic embodiment, first preferred implementation of the present invention is, abrasion test device, also comprise the second spray header 6, second spray header 6 to be arranged on away from directly over leverage 2 side emery wheel 1, the water jet of the second spray header 6 is towards emery wheel 1.
During enforcement, the water that the water jet of the second spray header 6 sprays towards emery wheel 1, just can in time the ground stock sticked on emery wheel 1 punching be removed, the water that first spray header 5 sprays just mainly provides the effect of lubricant, the wearing and tearing stress of further reduction emery wheel 1 pair of sample 9, thus guarantee that the wearing and tearing of emery wheel 1 pair of sample 9 are carried out under just remaining on low stress scuffing environment further, simultaneously, the water that second spray header 6 sprays can also be lowered the temperature in time to emery wheel, thus improves the serviceable life of emery wheel 1 further.
Water in order to ensure the first spray header 5 and the ejection of the second spray header 6 can focus on the outer peripheral face of emery wheel, the present invention is further improved on the basis of the first preferred implementation, second preferred implementation of the present invention is, the cross sectional shape of the first spray header 5 and the second spray header 6 water jet is square.During enforcement, cross sectional shape is square water jet, compared to the water jets that cross sectional shape is circle or other shapes, more can rinse the outer peripheral face of emery wheel, thus improve rinsing quality and the flush efficiency of the first spray header 5 and the second spray header 6 pairs of emery wheels 1 further.
The outer peripheral face of emery wheel 1 is the workplace of emery wheel 1 Wear specimens 9, only has the ground stock of the outer peripheral face effectively removing emery wheel 1, just can guarantee that the wearing and tearing of emery wheel 1 pair of sample 9 realize under low stress environment.Water in order to ensure the first spray header 5 and the ejection of the second spray header 6 can effectively remove the ground stock sticked on emery wheel, the temperature of timely reduction emery wheel, the present invention is further improved on the basis of the second preferred implementation, 3rd preferred implementation of the present invention is, the water jet of the first spray header 5 and the second spray header 6 is the thickness of emery wheel 1 along the width of emery wheel 1 thickness direction.During enforcement, the water jet be of uniform thickness with emery wheel 1 can effectively remove the ground stock sticked on emery wheel 1, thus a step improves rinsing quality and the flush efficiency of the first spray header 5 and the second spray header 6 pairs of emery wheels 1, also just guarantee that the wearing and tearing of emery wheel 1 pair of sample 9 realize under low stress environment further.
Adopt the mode of artificial counting add up the wearing and tearing workload of emery wheel and adopt manually operated mode to control the wear extent of emery wheel 1 pair of sample 9, be unfavorable for the assessment of subsequent sample 9 antiwear property.For the ease of controlling the wear extent of emery wheel 1 pair of sample 9, be convenient to the wearing and tearing workload calculating emery wheel, the basis of the present invention's arbitrary embodiment in basic embodiment, the first to the 3rd preferred embodiments is further improved, 4th preferred implementation of the present invention is, abrasion test device, also comprise control device for pivoting and be arranged on the other revolution counter of drive motor rotating shaft, revolution counter electrical connection control device for pivoting, control device for pivoting electrical connection drive motor.During enforcement, revolution counter is adopted to count emery wheel 1 number of revolutions, effectively can reduce the labour intensity of artificial counting, the accuracy developed skill, revolution counter and control device for pivoting synergy simultaneously, the science being used in sample 9 wear extent controls, thus improves the controllability of wear test further, the validity of test findings and the property assessed.
In order to avoid being splashed in the environment around abrasion test device from the water of the first spray header 5 water jet and the ejection of the second spray header 6 water jet, the basis of the present invention's arbitrary embodiment in first to fourth preferred embodiments is further improved, 5th preferred implementation of the present invention is, abrasion test device, also comprise waterproof cover 8 plate, waterproof cover 8 is arranged on the top of the first spray header 5 water jet and the second spray header 6 water jet.During enforcement, the water resistance that emery wheel sputters can keep off by waterproof cover 8 plate, and water drops into again on emery wheel 1 under gravity, lowers the temperature to emery wheel 1, also avoid simultaneously and causes water pollutions to damage test unit surrounding environment.
It is more than the implementation process of abrasion test device of the present invention.As can be seen from implementation process, this device is embodied as sample 9 provides multiple low stress to scratch abrasion environment, and the validity of wear test result is high, and test key element is relatively single, is conducive to the assessment that the anti-low stress of sample 9 scratches wear resistance; Low stress compared to prior art scratches abrasion tester, abrasion test device of the present invention, and neither adopt rubber wheel also not adopt consumptive material frosted, operation and maintenance is simple and convenient, and use cost is low.
Abrasion test method, is characterized in that, adopts the abrasion test device according to any one of claim 1 to 6 to carry out wear test, comprises the following steps:
Step 1, sample are installed: lift load bar 7, allow cross bar 201 relative level line rotate up, montant 202 leaves emery wheel 1, is installed in by sample 9 in sample installing port 204;
Step 2, sample pre-grinding: choose side crops industry counterweight 4, by its carry on cross bar 201, open drive motor power supply, after emery wheel 1 stabilization of speed, put down load bar 7, sample 9 is allowed to contact with emery wheel 1 under the moment loading of counterweight 4, pre-grinding sample 9, after obvious polishing scratch appears in sample 9, close drive motor, lift load bar 7 and take out sample 9 from sample installing port 204, after sample cleaning is dried up, the quality after weighed amount 9 pre-grinding;
Step 3, wear test: by the sample 9 after weighing, be installed in sample installing port 204 according to mounting means during pre-grinding, the counterweight 4 of carry operating load on cross bar 201, open drive motor, after motor speed to be driven is stable, open the first spray header 5, water is allowed to rinse emery wheel 1, after the discharge of the first spray header 5 ejection is stable, put down load bar 7, sample 9 is allowed to contact with emery wheel 1 under the moment loading of counterweight 4, emery wheel 1 number of revolutions is counted simultaneously, after emery wheel 1 number of revolutions reaches predetermined value, close drive motor power supply, close the first spray header 5, lift load bar 7 and take out sample 9 from sample installing port 204,
For the ease of counting emery wheel 1 number of revolutions, and after emery wheel 1 number of revolutions reaches predetermined value disable motor power supply, can adopt and revolution counter is set on drive motor rotating shaft side, between drive motor and revolution counter, control device for pivoting is set, revolution counter electrical connection control device for pivoting, control device for pivoting electrical connection drive motor; Revolution counter counts emery wheel 1 number of revolutions, and when count value reaches predetermined value, revolution counter signals to the control device for pivoting be electrically connected with it, and control device for pivoting closes the drive motor be electrically connected with it.
Step 4, determine wear extent: sample 9 cleaning after wear test dried up, the quality after weighed amount 9 wear test, deducts the quality after sample 9 wear test by the quality after sample 9 pre-grinding, just obtain the wear extent of sample.
It is more than the implementation process of abrasion test method of the present invention.As can be seen from implementation process, owing to carrying out heavily stressed sample pre-grinding to sample 9 in advance, remove smooth can not the surface portion of true reflect structure material wear-resistant performance, then wear test is carried out to sample 9, the test findings measured, more can reflect that the anti-low stress of sample 9 scratches wear resistance effectively; Owing to adopting revolution counter to count emery wheel number of revolutions, adopt control device for pivoting to close drive motor according to the count results of revolution counter, thus improve the controllability of wear test further, the validity of test findings and the property assessed.
Claims (8)
1. abrasion test device, comprise counterweight (4), drive motor, be arranged on the emery wheel (1) in drive motor rotating shaft, the leverage (2) of emery wheel (1) side is arranged on by loading axle (3), described leverage (2) is made up of cross bar (201) and montant (202), the below of described cross bar (201) is provided with load bar (7), described cross bar (201) is provided with counterweight carry hole (203) away from one end of montant (202), described counterweight (4) is carried on cross bar (201) by counterweight carry hole (203), sample installing port (204) is offered near emery wheel (1) part at described montant (202), described sample installing port (204) is towards emery wheel (1), it is characterized in that, also comprise the first spray header (5) be arranged on directly over the emery wheel (1) of leverage (2) side, the water jet of described first spray header (5) is towards emery wheel (1), and described leverage (2) is by cross bar (201) and the integrated L-type structure of montant (202).
2. abrasion test device according to claim 1, it is characterized in that, also comprise the second spray header (6), described second spray header (6) is arranged on away from directly over leverage (2) side emery wheel (1), and the water jet of described second spray header (6) is towards emery wheel (1).
3. abrasion test device according to claim 2, is characterized in that, the cross sectional shape of described first spray header (5) and the second spray header (6) water jet is square.
4. abrasion test device according to claim 3, it is characterized in that, the water jet of described first spray header (5) and the second spray header (6) is the thickness of emery wheel (1) along the width of emery wheel (1) thickness direction.
5. abrasion test device according to claim 1, it is characterized in that, also comprise control device for pivoting and be arranged on the other revolution counter of drive motor rotating shaft, described revolution counter electrical connection control device for pivoting, described control device for pivoting electrical connection drive motor.
6. the abrasion test device according to any one of claim 2 to 5, it is characterized in that, also comprise waterproof cover (8) plate, described waterproof cover (8) is arranged on the top of the first spray header (5) water jet and the second spray header (6) water jet.
7. abrasion test method, is characterized in that, adopts abrasion test device according to claim 1 to carry out wear test, comprises the following steps:
Step 1, sample are installed: lift load bar, allow cross bar relative level line rotate up, montant leaves emery wheel, is installed in by sample in sample installing port;
Step 2, sample pre-grinding: choose side crops industry counterweight, by its carry on cross bar, open drive motor power supply, after grinding wheel speed is stable, puts down load bar, allow sample contact with emery wheel under the moment loading of counterweight, pre-grinding sample; After sample occurring obvious polishing scratch, close drive motor, lift load bar, from sample installing port, take out sample, after sample cleaning is dried up, the quality after weighed amount pre-grinding;
Step 3, wear test: by the sample after weighing, be installed in sample installing port according to mounting means during pre-grinding, the counterweight of carry operating load on cross bar, open drive motor, after motor speed to be driven is stable, open the first spray header, water is allowed to rinse emery wheel, after the discharge of the first spray header ejection is stable, put down load bar, sample is allowed to contact with emery wheel under the moment loading of counterweight, emery wheel number of revolutions is counted simultaneously, after emery wheel number of revolutions reaches predetermined value, close drive motor power supply, close the first spray header, lift load bar and take out sample from sample installing port,
Step 4, determine wear extent: the sample cleaning after wear test dried up, the quality after weighed amount wear test, deducts the quality after sample wear test by the quality after sample pre-grinding, just obtains the wear extent of sample.
8. abrasion test method according to claim 7, is characterized in that, describedly counts emery wheel number of revolutions, and after emery wheel number of revolutions reaches predetermined value, closing drive motor power supply is,
Revolution counter is set on drive motor rotating shaft side, control device for pivoting is set between drive motor and revolution counter, described revolution counter electrical connection control device for pivoting, described control device for pivoting electrical connection drive motor;
The revolution counter being arranged on drive motor rotating shaft side is adopted to count emery wheel number of revolutions, when count value reaches predetermined value, revolution counter signals to the control device for pivoting be electrically connected with it, and control device for pivoting closes the drive motor be electrically connected with it.
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