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SK94694A3 - Method and device for measuring of characteristics of forming matter - Google Patents

Method and device for measuring of characteristics of forming matter Download PDF

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Publication number
SK94694A3
SK94694A3 SK946-94A SK94694A SK94694A3 SK 94694 A3 SK94694 A3 SK 94694A3 SK 94694 A SK94694 A SK 94694A SK 94694 A3 SK94694 A3 SK 94694A3
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Slovakia
Prior art keywords
measuring
test
station
molding
pressure
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SK946-94A
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Slovak (sk)
Inventor
Christian Renner
Ernst Mathys
Ernst O Kruse
Original Assignee
Fischer Georg Giessereianlagen
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Publication of SK94694A3 publication Critical patent/SK94694A3/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C19/00—Components or accessories for moulding machines
    • B22C19/04—Controlling devices specially designed for moulding machines
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
    • G01N15/082—Investigating permeability by forcing a fluid through a sample
    • 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
    • G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
    • 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
    • G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014—Type of force applied
    • G01N2203/0016—Tensile or compressive
    • G01N2203/0019—Compressive
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014—Type of force applied
    • G01N2203/0025—Shearing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/0202—Control of the test
    • G01N2203/0206—Means for supplying or positioning specimens or exchangeable parts of the machine such as indenters...
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/025—Geometry of the test
    • G01N2203/0256—Triaxial, i.e. the forces being applied along three normal axes of the specimen
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/026—Specifications of the specimen
    • G01N2203/0284—Bulk material, e.g. powders

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  • Chemical & Material Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Pathology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Mold Materials And Core Materials (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

The device has a filling station (2) and two testing stations (2, 3). A shell body (9) filled with a foundry casting material is moved together with a base plate (10) into the first testing station (2), in which the compressibility measurement takes place using a press device (13) and a test specimen is produced. After moving the shell body (9) with the test specimen on the base plate (10) into the second testing station (3), the measurement of gas permeability, crushing strength and double shear strength takes place here. <IMAGE>

Description

Vynález sa týka spôsobu merania viacej vlastností formovacej hmoty zlievárenských formovacích hmôt podľa rozhodujúcich znakov nároku 1, ako i zariadení na prevedenie tohoto spôsobu.The invention relates to a method for measuring a plurality of molding material properties of foundry molding compositions according to the decisive features of claim 1, and to an apparatus for carrying out the method.

Pre stále rovnakú kvalitu odliatkov je potrebná formovacia hmota pokiaľ možno nemennej kvality a preto je nutné dodržať pri príprave zlievárenskej formovacej hmoty jej vlastnosti stále v potrebných úzkych toleranciách počas celej doby výroby odliatkov.For still the same quality of the castings, a molding material of as constant a quality as possible is necessary, and therefore it is necessary to maintain its properties within the necessary close tolerances during the entire casting process when preparing the foundry molding material.

Doterajší stav technikyBACKGROUND OF THE INVENTION

Známe laboratórne skúšobné metódy pomocou jednotlivých prístrojov sa nehodia na rýchle vyhodnotenie výsledkov merania a pre automatické ovládanie/riadenie prípravy pieskov počas výrobného procesu. Pre automatické ovládanie/riadenie boli vytvorené zariadenia a stanovené postupy v úvode uvedeného druhu (napríklad US-PS 2,791,120), pri ktorých sa z obehu piesku odobraných formovacích hmôt vytvárajú skúšobné telesá, na ktorých sa zisťujú väčšinou iba dvoma meracími spôsobmi (meranie stlačiteľnosti a tlakuvzdornosti) okamžité vlastnosti hmoty.Known laboratory test methods using individual instruments are not suitable for rapid evaluation of measurement results and for automatic control / control of sand preparation during the production process. For automatic control / control, devices and procedures have been developed in the introduction of the above-mentioned type (e.g. US-PS 2,791,120), in which the sand is taken from the molding material taken from the circulation of test specimens, usually detected by only two measuring methods (compressibility and compressibility) immediate properties of matter.

Nevýhodou tohto spôsobu a zariadenia je, že väčšinou je počet rozdielnych meraní pre exaktné vyhodnotenie a trvalé ovplyvňovanie vlastností formovacej hmoty príliš malý, výsledky merania často nepresné, a že zariadenie je vybavené často niekoľkými na guľatom stole usporiadanými puzdrami na zhotovenie valcovitých skúšobných telies, čo vyžaduje značné rozmery zariadenia a veľké stavebné náklady.The disadvantage of this method and apparatus is that, in most cases, the number of different measurements for exact evaluation and continuous influence on the molding material properties is too small, the measurement results often inaccurate, and that the apparatus is often equipped with several cylindrical sleeves for cylindrical test specimens. considerable equipment dimensions and large construction costs.

Podstata vynálezuSUMMARY OF THE INVENTION

Úlohou daného vynálezu je vytvorenie spôsobu v úvode označeného druhu, pri ktorom možno dosiahnuť viacerými rozdielnymi spôsobmi merania a presnými výsledkami meraní, vrátane ich vyhodnotení, exaktnejšie dodržanie požadovanej kvality formovacej hmoty, pretože hodnoty piesku sa zisfujú priamo na skúšobnom telese. Na tento účel nutné zariadenie sa má daf využiť ako laboratórny prístroj pri nízkych stavebných nákladoch, ale rovnako na automatické riadenie úpravy piesku.SUMMARY OF THE INVENTION It is an object of the present invention to provide a method of the kind initially described in which a number of different measurement methods and accurate measurement results, including evaluation thereof, can be achieved more precisely by maintaining the desired molding material quality. The equipment required for this purpose should be used as a laboratory apparatus at low construction costs, but also for automatic sand treatment control.

Vynálezom je táto úloha dosiahnutá význakovou časťou nároku spôsobu merania 1 a nároku zariadenia 6.The present invention is accomplished by the characterizing portion of the measurement method claim 1 and the apparatus claim 6.

Ďalšie výhodné realizácie vynálezu sú popísané v na tieto nároky závislých nárokoch.Further advantageous embodiments of the invention are described in the dependent claims.

Prehľad obrázkov na výkreseOverview of the figures in the drawing

Vynález je na priloženom výkrese znázornený ako príklad prevedenia a nasledovne popísaný.The invention is illustrated by way of example in the accompanying drawing and is described below.

Jediný obrázok ukazuje schematické znázornenie zariadenia na meranie vlastností formovacej hmoty.The only figure shows a schematic representation of a device for measuring the properties of the molding composition.

Príklady realizácie vynálezuDETAILED DESCRIPTION OF THE INVENTION

Obrázok ukazuje zariadenie na meranie vlastností formovacej hmoty, ktoré má plniacu stanicu 1 pre po šaržiach z obehu odobranú zlievárenskú formovaciu hmotu, prvú skúšobnú stanicu 2 a druhú skúšobnú stanicu 2Plniaca stanica 1 má z vonkajšej strany skrine 4 usporiadaný plniaci lievik 5, ktorý sa dá klapkou 6, usporiadanou na dolnom konci, uzavrieť. Manipulačným zariadením 7, napríklad zdvíhacím válcom, sa môže klapka 6 otvárať alebo zatvárať. Plniaci lievik 5 je spojený so zariadením na meranie hmotnosti 8. upevnenom na skrini 4.The figure shows an apparatus for measuring the properties of the molding material, which has a filling station 1 for batches taken from the foundry molding compound, a first test station 2 and a second test station 2. The filling station 1 has a flask 5 arranged on the outside of the housing 4. 6, arranged at the lower end, to close. The flap 6 can be opened or closed by a handling device 7, for example a lifting cylinder. The filling funnel 5 is connected to a weight measuring device 8 mounted on the housing 4.

Teleso v tvare puzdra 9., ktoré možno naplniť zlievárenskou hmotou, sa spolu s pôdnou doskou 10 dá posunúť od plniacej stanice do prvej skúšobnej stanice 2. Prvé posuvné za riadenie 11 zaberá na pôdnu dosku 10, pričom druhé posuvné zariadenie 12 usporiadané na pôdnej doske 10 a s touto posuvné, slúži na posúvanie puzdra 9 po pôdnej doske 10.The casing-shaped body 9, which can be filled with foundry mass, together with the soil plate 10 can be moved from the filling station to the first test station 2. The first sliding device 11 engages the soil plate 10, the second sliding device 12 arranged on the soil plate. 10 and with this sliding, serves to move the housing 9 on the soil plate 10.

Posuvné zariadenia 11,12 môžu byť ovládané servopohonmi elektricky, hydraulicky alebo pneumaticky.The sliding devices 11, 12 may be actuated by electric, hydraulic or pneumatic actuators.

Pri prvej skúšobnej stanici 2 je na meranie stlačiteľnosti usporiadané nad puzdrom 9 stláčacie zariadenie 13 s meracím zariadením tlaku 14 a meracím zariadením dráhy 15. Stláčacie zariadenie 13 má prednostne elektrický alebo tiež hydraulický alebo pneumaticky ovládaný servopohon 16 s lisovníkom 17, pričom je medzi servopohonom 16 a lisovníkom 17 usporiadané zariadenie na meranie tlaku 14, pracujúce na základe elektrického škatuľového silomeru.At the first test station 2, a compression device 13 with a pressure measuring device 14 and a track measuring device 15 is provided above the housing 9 for measuring the compressibility. The compression device 13 preferably has an electric or also hydraulic or pneumatic actuated actuator 16 with a punch 17, being between the actuator 16 and a pressure measuring device 14 operating on the basis of an electric box load cell arranged by a punch 17.

V druhej skúšobnej stanici 3. je nad puzdrom 9 usporiadané na meranie tlakuvzdornosti ďalšie stláčacie zariadenie 18 so servopohonom 19 a lisovníkom 20, pričom servopohon 19 je vybavený meracím zariadením dráhy 21 a zodpovedá servopohonu 16 s jeho meračom dráhy 15.In the second test station 3, a further compression device 18 with a servo drive 19 and a punch 20 is arranged above the housing 9 for measuring the resistance to resistance, the servo drive 19 being equipped with a travel measuring device 21 and corresponding to the servo drive 16 with its travel measuring device 15.

Pod pôdnou doskou 10 s priechodným otvorom 22 je na dosadacom diele 23 usporiadané meracie zariadenie tlaku 24, realizované ako škatuľový silomer, ktoré sa používa na meranie tlakuvzdornosti.A pressure measuring device 24, arranged as a box load cell, is used below the soil plate 10 with a through-hole 22 to be used for measuring the resistance to pressure.

Dosadací diel 23 a meracie zariadenie tlaku 24 sú posuvným zariadením 25 horizontálne posuvné, pričom posuvné zariadenie 25 má elektricky, hydraulicky alebo pneumaticky ovládaný servopohon 26, na ktorom je usporiadaný pridržiavací diel 27 s meracím zariadením tlaku 24 a dosadacím dielom 23.The abutment member 23 and the pressure measuring device 24 are displaceably displaceable by the sliding device 25, the sliding device 25 having an electrically, hydraulically or pneumatically actuated actuator 26 on which a retaining piece 27 is arranged with the pressure measuring device 24 and the abutment member 23.

Lisovník 20 má vo svojej tlakovej ploche trysky 28 na prietok plynu alebo stlačeného vzduchu. Trysky 28 sú spojené na meranie plynopriepustnosti s vyvíjačom tlaku plynu, prednostne s ako ventilátor realizovaným vyvíjačom stlačeného vzduchu 29, pričom je v potrubí k tryskám 28 usporiadané zariadenie na meranie tlaku.The punch 20 has nozzles 28 for the flow of gas or compressed air in its pressure surface. The nozzles 28 are coupled to the gas pressure generator for measuring gas permeability, preferably with a compressed air generator 29 implemented as a fan, wherein a pressure measuring device is provided in the duct to the nozzles 28.

Pod pôdnou doskou 10 je v druhej skúšobnej stanici 3 usporiadaný servopohonom 30 horizontálne posuvný razník 31 v tvare U, vybavený oporným ložiskom 33 s meracím zariadením tlaku 32 na meranie dvojitej pevnosti v strihu.Underneath the soil plate 10, in the second test station 3, a servo drive 30 is provided with a horizontally displaceable U-shaped punch 31 equipped with a thrust bearing 33 with a pressure measuring device 32 for measuring the double shear strength.

Všetky zariadenia na meranie tlaku 14.,24,32., zariadenia na meranie dráhy 15 a 21, ako i meracie zariadenia hmotnosti 8., sú na odovzdávanie elektrických hodnôt meraní spojené vedením s vyhodnocovacím zariadením 40., v ktorom sa pri laboratórnom využití vyhodnocujú, ukazujú, ukladajú do pamäti a/alebo tlačia; takže môžu byť použité i na zaistenie kvality.All pressure measuring devices 14, 24, 32, track measuring devices 15 and 21, as well as weight measuring devices 8, are connected to the evaluation device 40 for conducting the electrical values of the measurements, in which they are evaluated for laboratory use. show, store and / or print; so they can also be used to ensure quality.

Priebeh spôsobu výroby skúšobných telies a meraní vlastností formovacej hmoty s vyššie popísaným zariadením prebieha takto :The process of manufacturing the test specimens and measuring the properties of the molding composition with the apparatus described above is as follows:

Na zlievárenské účely v úpravni formovacej hmoty zhotovená formovacia hmota sa v malom množstve dopraví k plniacemu lieviku 5. a ten sa naplní formovacou hmotou s predom určenou hmotnosťou.For foundry purposes, the molding mass produced in the molding material treatment plant is conveyed in small quantities to the filling funnel 5 and this is filled with a molding compound of a predetermined weight.

Otvorením klapky 6. sa naplní formovacia hmota v nakyprenom stave do dutiny pod ňou stojaceho telesa v tvare puzdraThe opening of the flap 6 fills the molding mass in the tilted state into the cavity of the housing-shaped body below it

9. Pri posune puzdra 9, spolu s pôdnou doskou 10 do prvej skúšobnej stanice 2 sa zotrie prebytočná formovacia hmota z púzdra 9.9. When the sleeve 9, together with the soil plate 10, is moved to the first test station 2, the excess molding mass from the sleeve 9 is rubbed off.

V skúšobnej stanici 2 sa raeria stlačiteľnosť formovacej hmoty, pričom lisovník 17 zhutňuje formovaciu hmotu až do vopred určenej lisovacej sily, ktorá sa meria zariadením na meranie tlaku 14.. Pritom sa meria dráha stláčania zariadenia na meranie dráhy 15 a prevádza sa ako signál do vyhodnocovacieho prístroja 40.In the test station 2, the compressibility of the molding mass is measured, whereby the punch 17 compacts the molding mass up to a predetermined pressing force, which is measured by the pressure measuring device 14. The compression path of the travel measuring device 15 is measured and converted apparatus 40.

Nameraná dráha stláčania súčasne určí výšku normálneho skúšobného telesa. Ak nemá normovanú výšku normálneho skúšobného telesa, využije sa nameraná hodnota na korektúru hmotnosti dávkovaného množstva formovacej hmoty v zariadení na meranie hmotnosti 8, k čomu dôjde príslušným vyhodnotením prípadne výpočtom vo vyhodnocovacom prístroji 40., pričom sa pri výpočte berie tiež za základ plný objem telesa v tvare puzdra 9..The measured compression path simultaneously determines the height of the normal test specimen. If it does not have a normal test body height, the measured value is used to correct the weight of the molding mass quantity in the weight measuring device 8, by appropriate evaluation or calculation in the evaluator 40, taking into account the full body volume as the basis. Case Shape 9 ..

Zhutnením zhotovené prvé skúšobné teleso sa posunutím puzdra 9 na pôdnej doske 10 presunie do druhej skúšobnej stanice 3., pričom sa potom skúšobné teleso prestrčí priechodným otvorom 22 v pôdnej doske 10 lisovníkom 20 stláčacieho zaria denia 18 až na dosadací diel 23.By compacting the first test body, by sliding the housing 9 on the soil plate 10, it moves to the second test station 3, whereupon the test body is pushed through the through hole 22 in the soil plate 10 by the punch 20 of the compression device 18 up to the seating part 23.

Tu sa posunutím ražníka 31 v tvare U servopohonom 30 určí dvojitá pevnosť v strihu, pričom sa signály zo zariadenia na meranie tlaku 32 privádzajú do vyhodnocovacieho prístrojaHere, by shifting the U-shaped ram 31, the double shear strength is determined, whereby the signals from the pressure measuring device 32 are fed to the evaluation apparatus.

40..40 ..

Odstrihnuté diely skúšobného telesa padajú po posunutí dosadacieho dielu 23 naľavo do nádrže. Meranie tlakuvzdornosti a plynopriepustnosti sa môže vykonávať iba na normálnom skúšobnom telese s určitou normálnou výškou. To sa zhotoví, hmotnosťou korigovaným množstvom náplne v puzdreThe cut-off parts of the test body fall on the left into the tank after the bearing part 23 has been moved. Pressure and gas permeability measurements may only be carried out on a normal test specimen with a certain normal height. This is made by the weight-corrected amount of cartridge in the housing

9., zhutnením stláčacieho zariadenia 13., pričom sa zisťuje výška normálneho skúšobného telesa zariadením na meranie dráhy 15.9, by compacting the compression device 13, whereby the height of the normal test body is determined by the track measuring device 15.

Ak nebolo pomocou hmotnosti korigované množstvo formovacej hmoty správne, opakuje sa tento postup, kým dosiahne normálne skúšobné teleso pri stlačení korigovaného množstva náplne normálnu výšku.If the mass of molding mass was not corrected by weight, this procedure is repeated until the normal specimen reaches the normal height when the corrected amount of fill is compressed.

Po posunutí normálneho skúšobného telesa s puzdrom 9 do druhej skúšobnej stanice, sa meria zíjdením lisovníka 20 do telesa v tvare puzdra 2 plynopriepustnosť.After moving the normal test body with housing 9 to the second test station, the gas permeability is measured by inserting the punch 20 into the housing 2.

Pritom sa zavádza v časovej jednotke konštantný objem prúdu plynu -prednostne vzduchu- tryskami 28 do skúšobného telesa, pričom sa meria maximálny nárast tlaku a privádza sa ako elektrický signál do vyhodnocovacieho prístroja 40.In this case, a constant volume of gas flow - preferably through air nozzles 28 - is introduced into the test body in a time unit, the maximum pressure increase being measured and supplied as an electrical signal to the evaluation device 40.

Nadväzne sa pretlačí normálne skúšobné teleso lisovníkom 20 priechodným otvorom 22 na dosadací diel 23 a na skúšobnom telese sa zistí tlakuvzdornosť. Súčasne je stláčacím zariadením 18 vystavené skúšobné teleso tlakovej sile až sa rozlomí, pričom sa tlaková sila meria zariadením na meranie tlaku 24 a signály merania sa privádzajú do vyhodnocovacieho prístroja 40. Po posunutí dosadacieho dielu 23 vľavo padajú rozprsknuté diely normálneho skúšobného telesa do naspodku usporiadanej nádrže.Subsequently, the normal test body is pushed through the punch 20 through the through hole 22 onto the abutment part 23 and the pressure resistance is determined on the test body. At the same time, the compression body 18 is subjected to compressive force until it breaks, whereby the pressure force is measured by the pressure measuring device 24 and the measurement signals are fed to the evaluating apparatus 40. After shifting the bearing part 23 to the left .

Všetky postupne získané hodnoty merania, ako je stlačiteľnosť, tlakuvzdornosť, plynopriepustnosť, dvojitá pevnosť v strihu a hmota piesku, ako vypočítaný pomer pevnosti v strihu k tlakuvzdornosti, slúži na analýzu formovacej hmotyAll successive measurement values such as compressibility, compressive strength, gas permeability, double shear strength and sand mass, as a calculated ratio of shear strength to compressive strength, are used to analyze the molding composition.

- 6 upravenej v úpravni formovacej hmoty, pričom sa potom vzájomne porovnávajú predpokladané a/skutočné hodnoty a je možná automatická korektúra vlastností formovacej hmoty.6 in the molding plant, whereby the predicted and / actual values are compared with each other and an automatic correction of the molding compound properties is possible.

Claims (12)

PATENTOVÉ NÁROKYPATENT CLAIMS 1. Spôsob merania viacerých vlastností formovacej hmoty na skúšobnom telese zo zlievárenskej formovacej hmoty zhotovenom v telese v tvare puzdra, vyznačujúci s a nasledujúcimi krokmi spôsobu :A method of measuring a plurality of molding composition properties on a molding molding specimen made in a sleeve-shaped body, characterized by the following steps of the method: a/ Naplnenie telesa v tvare puzdra zlievárenskou formovacou hmotou, b/ meranie stlačiteľnosti vopred stanovenou silou,pričom sa určuje výška zhutneného skúšobného telesa, c/ meranie dvojitej pevnosti v strihu na tomto skúšobnom telese, d/ vytlačenie dielov skúšobného telesa, e/ stanovenie hmotnosti náplne formovacej hmoty pre dosiahnutie normovanej výšky normálneho skúšobného telesa v závislosti na meraní stlačiteľnosti a na plnom objeme telesa v tvare puzdra, f/ zhotovenie normálneho skúšobného telesa vopred určenou stláčacou silou, g/ meranie plynopriepustnosti na normálnom skúšobnom telese, h/ meranie tlakuvzdornosti na normálnom skúšobnom telese, i/ odovzdávanie nameraných hodnôt stlačiteľnosti, hmotnosti formovacej hmoty normálneho skúšobného telesa, dvojitej pevnosti v strihu, plynopriepustnosti a tlakuvzdornosti do vyhodnocovacieho prístroja.a / Filling the sleeve-shaped body with a foundry molding material, b / measuring the compressibility with a predetermined force, determining the height of the compacted test body, c / measuring the double shear strength on the test body, d / extruding the test body parts, e / determining the weight molding fillings to achieve a standard height of normal test specimen as a function of compressibility measurement and full body volume in the form of a sleeve, f / producing a normal test specimen with a predetermined compressive force, g / measuring gas permeability on a normal specimen, h / the test body, i / passing the measured values of compressibility, the weight of the molding mass of the normal test body, the double shear strength, the gas permeability and the pressure resistance to the evaluator. 2. Spôsob podľa nároku 1,vyznačujúci sa tým, že kroky spôsobu e/ a f/ sa opakujú niekoľkokrát, až kým je zhotovené normálne skúšobné teleso potrebnej výšky.Method according to claim 1, characterized in that the process steps e (a) and (f) are repeated several times until a normal test specimen of the required height is produced. 3. Spôsob podľa nároku 1 alebo 2,vyznačujúc i sa t ý m, že zistené hodnoty merania sa digitálne ukazujú, znázorňujú na obrazovke a/alebo tlačia.Method according to claim 1 or 2, characterized in that the measured measurement values are digitally displayed, displayed on the screen and / or printed. 4. Spôsob podľa jedného 2 nárokov 1 až 3, vyznaču júci sa tým, že hodnoty merania sa prevedú na ovládacie alebo riadiace signály, ktoré automaticky ovládajú alebo riadia pridávanie komponentov zmesi nutných na dodržanie vopred stanovených parametrov formovacej hmoty.Method according to one of Claims 1 to 3, characterized in that the measurement values are converted into control or control signals which automatically control or control the addition of the components of the mixture necessary to maintain the predetermined parameters of the molding composition. 5 Spôsob podľa jedného z nárokov 1 až 4, vyznaču júci sa tým, že meranie plynopriepustnosti, pri ktorom sa meria dynamický tlak, sa prevádza prúdom plynu -prednostne vzduchu- konštantného objemu.Method according to one of Claims 1 to 4, characterized in that the gas permeability measurement, in which the dynamic pressure is measured, is carried out by a gas flow - preferably air - of a constant volume. 6. Zariadenie na prevádzanie spôsobu podľa jedného z nárokov 1 až 5,vyznačujúci sa tým, že teleso v tvare puzdra /9/ sa dá posunúť od plniacej stanice /1/ spolu s pôdnou doskou /10/ posúvacím zariadením /11/ do prvej skúšobnej stanice /2/ a odtiaľ na pôdnej doske /10/ do druhej skúšobnej stanice /3/.Method for carrying out the method according to one of claims 1 to 5, characterized in that the casing-shaped body (9) can be moved away from the filling station (1) together with the soil plate (10) by the displacement device (11) into the first test piece. station (2) and from there on the soil plate (10) to the second test station (3). 7. Zariadenie podľa nároku 6,vyznačujúce sa tým, že plniaca stanica /1/ má plniaci lievik /5/ s regulovateľným zariadením na zisťovanie hmotnosti /8/.Apparatus according to claim 6, characterized in that the filling station (1) has a filling funnel (5) with an adjustable weight detection device (8). 8. Zariadenie podľa nároku 6 alebo 7, vyznačuj úce sa t ý m, že v prvej skúšobnej stanici /2/ je usporiadané na meranie stlačiteľnosti nad telesom v tvare puzdra /9/ stláčacie zariadenie /13/ so zariadením na meranie tlaku /14/ a zariadením na meranie dráhy /15/.Device according to claim 6 or 7, characterized in that a compression device (13) with a pressure measuring device (14) is arranged in the first test station (2) for measuring the compressibility over the casing-shaped body (9). and a path measuring device (15). 9. Zariadenie podľa jedného z nárokov 6 až 8, vyznaču júce sa tým, že v druhej skúšobnej stanici /3/ je usporiadané na meranie tlakuvzdornosti nad telesom v tvare puzdra /9/ ďalšie stláčacie zariadenie /18/ a pod pôdnou doskou /10/ s priechodným otvorom /22/ dosadací diel /23/ so zariadením na meranie tlaku /24/.Apparatus according to one of Claims 6 to 8, characterized in that in the second test station (3) a further compression device (18) and below the soil plate (10) is arranged for measuring the resistance to pressure over the casing-shaped body (9). with a through hole (22) of the bearing part (23) and a pressure measuring device (24). 10. Zariadenie podľa jedného z nárokov 6 až 9, vyznaču júce sa tým, že v druhej skúšobnej stanici /3/ je na meranie dvojitej pevnosti v strihu usporiadaný pod pôdnou doskou /,10/ horizontálne posuvný nárazník v tvare U /31/, s oporným ložiskom /33/ vybaveným zariadením na meranie tlaku /32/.Apparatus according to one of Claims 6 to 9, characterized in that in the second test station (3) a horizontal sliding bumper in the shape of U (31) is arranged below the soil plate (10) for measuring double shear strength. a thrust bearing (33) equipped with a pressure measuring device (32). 11. Zariadenie podľa jedného z nárokov 9 alebo 10, vy značujúce sa tým, že druhé stláčacie zariadenie /18/ je vybavené tryskami /28/, ktoré sú na meranie plynopriepustnosti spojené s vyvíjačom tlaku plynu, prednostne tlaku vzduchu /29/.Apparatus according to one of claims 9 or 10, characterized in that the second compression device (18) is equipped with nozzles (28) which are connected to a gas pressure generator, preferably air pressure (29), for measuring gas permeability. 12. Zariadenie podľa jedného z nárokov 9 až 11, v y z n a čujúce sa tým, že dosadací diel /23/ v druhej skúšobnej stanici je prestavovacím zariadením /25/ horizontálne prestaviteľný.Device according to one of Claims 9 to 11, characterized in that the bearing part (23) in the second test station is horizontally adjustable by the adjusting device (25).
SK946-94A 1993-08-09 1994-08-09 Method and device for measuring of characteristics of forming matter SK94694A3 (en)

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