7 research outputs found

    New generation drills with rotary tangent bits as the novelsolution for drilling and reaming in Tertiary and Quateriary formations

    No full text
    W artykule przedstawiono 艣widry (koronki) nowej generacji z wymiennymi obrotowymi no偶ami stycznymi do wiercenia i rozwiercania otwor贸w w z艂o偶ach o 艣redniej zwi臋z艂o艣ci, a tak偶e do wiercenia horyzontalnego i powrotnego. Przedstawiono rozwi膮zania pogl膮dowe i konstrukcyjne 艣widr贸w do wiercenia otwor贸w strza艂owych i rozlu藕niaj膮cych w g贸rnictwie odkrywkowym i podziemnym o zakresie 艣rednic od phi 105 do 216 mm oraz do wiercenia i rozwiercania otwor贸w hydrologicznych, a tak偶e geologiczno-poszukiwawczych o zakresie 艣rednic phi 250--670 mm.In the paper are presented drills (heads) of new generation with replacable rotary tangential bits for drilling and reaming holes in formations of medium cohesiveness usable also for horizontal and return drilling. There are presented illustrative and design solutions of drills for blasting and relaxing holes drilled in open-cast and underground mining of diametres range phi 105--216 mm and for drilling and reaming hydrogeological as well as geological - exploratory holes of diametres between phi 250 mm and phi 670 mm

    Chemical composition of the 16th - 18th century gun barrels and cannon balls from an Armoury of the Royal Wawel Castle in Cracow examined by X-ray microfluorescence analysis

    No full text
    Opisano zasad臋 dzia艂ania przeno艣nego analizatora sk艂adu chemicznego wykorzystuj膮cego mikrofluorescencj臋 rentgenowsk膮. Podano kr贸tki opis dzia艂ania przyrz膮du Niton. Zestawiono przyk艂adowe sk艂ady chemiczne luf dzia艂owych z ubieg艂ych wiek贸w na 艣wiecie i przytoczono wyniki pomiar贸w sk艂adu chemicznego luf armatnich znajduj膮cych si臋 w Zbrojowni Zamku Kr贸lewskiego na Wawelu.The principles of operation of a portable X-ray microfluorescence analyser of the chemical composition were described. A short characteristic of the Niton device was also given. Examples of chemical compositions of the gun barrels from past centuries examined in different countries were specified and compared with the results of the chemical composition measurements made on the gun barrels kept in an Armoury of the Royal Wawel Caste in Cracow

    Technical and design study of the use of rapid prototyping technique to make an art casting of Medal commemorating the 65<sup>th</sup> Anniversary of the establishment of Foundry Research Institute in Cracow

    No full text
    Podj臋to dzia艂ania w zakresie wykonania odlewu artystycznego, to jest medalu 65-lecia Instytutu Odlewnictwa - z wykorzystaniem techniki szybkiego prototypowania. Opisano najwa偶niejsze operacje technologiczne procesu od rysunku 2D do gotowego wyrobu. Wykazano, 偶e teza postawiona w pracy - jest mo偶liwa do realizacji wed艂ug najnowocze艣niejszych rozwi膮za艅 stosowanych w technologii odlewniczej.Steps have been taken to make an art casting - a medal commemorating the 65th Anniversary of the establishment of the Foundry Research Institute in Cracow, using a rapid prototyping technique. The most important technological operations from a 2D drawing to the finished product were described. It has been shown that the argument put in the study can be brought into effect using the most modern solutions of foundry technology
    corecore