RO100246B1 - Apparatus for hardness determination by shock - Google Patents

Apparatus for hardness determination by shock

Info

Publication number
RO100246B1
RO100246B1 RO132781A RO13278188A RO100246B1 RO 100246 B1 RO100246 B1 RO 100246B1 RO 132781 A RO132781 A RO 132781A RO 13278188 A RO13278188 A RO 13278188A RO 100246 B1 RO100246 B1 RO 100246B1
Authority
RO
Romania
Prior art keywords
hardness
mobile crew
vibration
frequency
impact
Prior art date
Application number
RO132781A
Other languages
Romanian (ro)
Other versions
RO100246A2 (en
Inventor
Gheorghe Gutt
Original Assignee
INSTITUTUL DE îNVATAMîNT SUPERIOR
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by INSTITUTUL DE îNVATAMîNT SUPERIOR filed Critical INSTITUTUL DE îNVATAMîNT SUPERIOR
Priority to RO132781A priority Critical patent/RO100246A2/en
Publication of RO100246B1 publication Critical patent/RO100246B1/en
Publication of RO100246A2 publication Critical patent/RO100246A2/en

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  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

Inventia se refera la un aparat pentru determinarea automata a duritatii dinamice prin soc a materialelor metalice si este destinat activitatii curente de masurare a duritatii în laboratoare uzinale, cât si de cercetare. Aparatul pentru determinarea duritatii prin soc, conform inventiei, este constituit dintr-un traductor piezoelectric cu element inertial, care genereaza, în momentul impactului echipajului mobil cu piesa de încercat, o tensiune proportionala cu forta de recul elastic a echipajului mobil de pe piesa de încercat, pentru suspendarea echipajului mobil fiind folosite niste arcuri, vibrarea echipajului mobil facându-se de catre un electromagnet, format dintr-o bobina, un miez si o alta bobina, frecventa, respectiv amplitudinea vibratiei mentinându-se constanta, prin compararea semnalului furnizat de un traductor inductiv de deplasare într-un comparator electronic cu nivel prescris si comandarea printr-un gnerator de semnal al frecventei si nivelului semnalului de alimentare, semnalele de tensiune furnizate de traductorul piezoelectric la impactul penetratorului sferic cu piesa fiind prelucrate electronic într-o unitate de masura dotate cu microprocesor, unitate care realizeaza prescrierea frecventei de vibrare, a vitezei de avans a piesei, comandând în acest scop viteza de rotatie a motorului, care realizeaza avansul liniar al materialului de încercat.The invention relates to an apparatus for the automatic determination of the dynamic hardness of metallic materials and is intended for the current activity of measuring the hardness in the laboratory laboratories as well as for the research. The apparatus for determining the hardness by shock according to the invention consists of a piezoelectric transducer with an inertial element which generates, at the moment of impact of the mobile crew with the test piece, a force proportional to the elastic recoil force of the mobile crew on the test piece , in order to suspend the mobile crew using some arches, the vibration of the mobile crew being made by an electromagnet consisting of a coil, a core and another coil, the frequency, and the vibration amplitude constant, maintaining the constant by comparing the signal provided by a an inductive drive transducer in an electronic comparator with a prescribed level, and commanding through a signal genset of the frequency and level of the power signal, the voltage signals provided by the piezoelectric transducer to the impact of the spherical penetrator with the piece being electronically processed into a measuring unit equipped with microprocessor, unit that performs prescr the vibration frequency output, the feed rate of the part, and for this purpose it controls the rotational speed of the motor, which achieves the linear advance of the test material.

RO132781A 1988-03-28 1988-03-28 Apparatus for hardness determination by shock RO100246A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RO132781A RO100246A2 (en) 1988-03-28 1988-03-28 Apparatus for hardness determination by shock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RO132781A RO100246A2 (en) 1988-03-28 1988-03-28 Apparatus for hardness determination by shock

Publications (2)

Publication Number Publication Date
RO100246B1 true RO100246B1 (en) 1990-11-30
RO100246A2 RO100246A2 (en) 1991-09-02

Family

ID=20121362

Family Applications (1)

Application Number Title Priority Date Filing Date
RO132781A RO100246A2 (en) 1988-03-28 1988-03-28 Apparatus for hardness determination by shock

Country Status (1)

Country Link
RO (1) RO100246A2 (en)

Also Published As

Publication number Publication date
RO100246A2 (en) 1991-09-02

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