{"id":22203,"date":"2023-09-07T16:15:41","date_gmt":"2023-09-07T08:15:41","guid":{"rendered":"https:\/\/www.meetyoucarbide.com\/?p=22203"},"modified":"2023-09-07T16:16:21","modified_gmt":"2023-09-07T08:16:21","slug":"what-impact-will-have-on-the-performance-of-mining-carbide-by-adding-rare-earth-elements","status":"publish","type":"post","link":"https:\/\/www.meetyoucarbide.com\/de\/what-impact-will-have-on-the-performance-of-mining-carbide-by-adding-rare-earth-elements\/","title":{"rendered":"Welche Auswirkungen wird die Zugabe von Seltenerdelementen auf die Leistung des Hartmetallabbaus haben?"},"content":{"rendered":"
Hartmetall f\u00fcr den Bergbau muss in der Lage sein, unter starken Schlagbedingungen schnell zu bohren und gleichzeitig den Verschlei\u00df zu minimieren und l\u00e4ngere St\u00f6\u00dfe ohne Bruch auszuhalten. Anders ausgedr\u00fcckt: Hartmetall im Bergbau muss \u00fcber eine hervorragende Verschlei\u00dffestigkeit und ausreichende Z\u00e4higkeit verf\u00fcgen, was sowohl im Inland als auch im Ausland seit langem ein schwieriges Problem darstellt.<\/p>\n

Generally speaking, improving the wear resistance of carbide\u00a0leads to a decrease in carbide\u00a0toughness, and increasing the toughness of carbides results in decreased wear resistance. Wear resistance and toughness are a contradictory unity. How to resolve this contradiction has become a major challenge in today’s carbide\u00a0production. Through test, we have found that adding trace rare earth elements to mining\u00a0carbide\u00a0can effectively address this issue.<\/p>\n

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Die Faktoren, die den Einfluss seltener Erdelemente auf Bergbaukarbide beeinflussen<\/h1>\n

We selected our factory’s mining\u00a0carbide\u00a0MTY25 and added a mixture of rare earth elements before wet grinding to prepare a blend called MTY25R. Both of these were high-temperature sintered to create experimental materials for performance testing.<\/p>\n

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Aus Tabelle 1 ist ersichtlich, dass die Zugabe von Seltenerdelementen die Werte f\u00fcr Biegefestigkeit und Schlagz\u00e4higkeit des Bergbaukarbids erh\u00f6ht hat, mit minimalen Auswirkungen auf H\u00e4rte, Dichte und magnetische Eigenschaften. Dies weist darauf hin, dass der Einschluss von Seltenerdelementen die plastische Verformungsf\u00e4higkeit der Bindungsphase und ihre Bindungsst\u00e4rke mit der Hartphase an der Grenzfl\u00e4che verbessert.<\/p>\n

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Die Zugabe von Seltenerdelementen zum Karbid kann das Karbid mit Verunreinigungselementen anreichern, die Verteilung von Grenzfl\u00e4chenverunreinigungen verbessern, Korngrenzen reinigen, die Bindungsphase st\u00e4rken und die Zusammensetzung der Co-Phase ver\u00e4ndern. Wir glauben, dass Seltenerdelemente neben der St\u00e4rkung der Co-Matrix der Bindungsphase vor allem die Phasenumwandlung von Co hemmen.<\/p>\n

Wir haben MTY25R- und MTY25-Bergbaukarbid einer elektrolytischen Aufl\u00f6sungsmethode unterzogen, bei der die Oberfl\u00e4chenschicht von WC selektiv aufgel\u00f6st wurde und die Co-Phase f\u00fcr die quantitative R\u00f6ntgenanalyse \u00fcbrig blieb. Wir fanden heraus, dass die Zugabe von Seltenerdelementen den Gehalt an duktilem \u03b1-Co im Karbid von etwa 60% auf \u00fcber 90% erh\u00f6ht und so die Plastizit\u00e4t der Co-Phase deutlich erh\u00f6ht. Folglich f\u00fchrt diese Verbesserung zu einer h\u00f6heren Biegefestigkeit und Schlagz\u00e4higkeit des Hartmetalls.<\/p>\n

 <\/p>\n

Die Validierung der Ergebnisse durch die experimentellen Daten<\/h1>\n

Um die Leistungsunterschiede zwischen Karbiden mit und ohne Zus\u00e4tze von Seltenerdelementen w\u00e4hrend der tats\u00e4chlichen Verwendung zu verstehen, haben wir die folgenden zwei Schritte durchgef\u00fchrt:<\/p>\n

1Dynamic thermal simulation tests were conducted to simulate the changes in carbide\u00a0performance under operating conditions and to determine the influence of rare earth elements on the carbide’s performance.<\/p>\n

2Field trials were carried out at mining production sites to assess the carbide’s service life. We conducted high-temperature dynamic thermal simulation tests at Central South University in China (as shown in Table 2).<\/p>\n

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 <\/p>\n

The test results indicate that adding rare earth elements to the carbide\u00a0reduces the carbide’s thermal strength while increasing its thermal plasticity and high-temperature toughness (represented by the total area under the stress-strain curve). This effect is similar to the increase in Co content. carbides containing rare earth elements exhibit excellent thermal plasticity and toughness, allowing them to better accommodate the complex thermal stress plastic deformation differences in high-temperature environments. Therefore, carbides with rare earth element additions can improve their performance in use, enhance wear resistance, and extend their service life.<\/p>\n

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Die Ergebnisse in Tabelle 3 zeigen, dass das MTY25R-Karbid mit zugesetzten Seltenerdelementen im Vergleich zum MTY25-Karbid ohne Seltenerdelemente eine Verbesserung sowohl der Lebensdauer als auch der Verschlei\u00dffestigkeit aufweist. Insbesondere bei dem in der Lugu-Eisenmine durchgef\u00fchrten Test zeigte das MTY25R-Hartmetall eine hervorragende Leistung.<\/p>\n

The Lugu Iron Mine is one of the locations in China known for having the hardest rocks. Typically, drilling bits with carbide\u00a0insert thicknesses of 16mm are used for ore extraction in this region, while the carbide\u00a0inserts we used in our test were 10mm thick. However, during the entire experiment, no instances of carbide\u00a0fracture were observed with the rare earth element-added carbide\u00a0inserts. The service life of these inserts was also significantly extended compared to the inserts without rare earth elements. This strongly supports the conclusion that the addition of rare earth elements can indeed enhance the carbide’s flexural strength and impact toughness, improving its performance in real-world applications.<\/p>\n

 <\/p>\n

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Fazit<\/h1>\n

1Adding a certain amount and form of rare earth elements to mining\u00a0carbides can enhance the carbide’s flexural strength and impact toughness, thus improving wear resistance and extending the carbide’s service life.<\/p>\n

2Die Zugabe von Seltenerdelementen hat einen \u00e4hnlichen Effekt wie die Erh\u00f6hung des Co-Gehalts im Karbid und erh\u00f6ht dessen thermische Plastizit\u00e4t und Z\u00e4higkeit.<\/p>\n

 <\/p><\/div>\n

<\/p>","protected":false},"excerpt":{"rendered":"

Mining carbide need to be able to drill rapidly under high-power impact conditions while minimizing wear and enduring prolonged impacts without breaking. Put another way, mining carbide must possess excellent wear resistance and sufficient toughness, which has been a long-standing and challenging case both domestically and internationally. Generally speaking, improving the wear resistance of carbide\u00a0leads…<\/p>","protected":false},"author":2,"featured_media":22209,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[79],"tags":[],"class_list":["post-22203","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-materials-weekly"],"jetpack_featured_media_url":"https:\/\/www.meetyoucarbide.com\/wp-content\/uploads\/2023\/09\/\u56fe\u72476.png","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.meetyoucarbide.com\/de\/wp-json\/wp\/v2\/posts\/22203","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.meetyoucarbide.com\/de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.meetyoucarbide.com\/de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/de\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/de\/wp-json\/wp\/v2\/comments?post=22203"}],"version-history":[{"count":0,"href":"https:\/\/www.meetyoucarbide.com\/de\/wp-json\/wp\/v2\/posts\/22203\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/de\/wp-json\/wp\/v2\/media\/22209"}],"wp:attachment":[{"href":"https:\/\/www.meetyoucarbide.com\/de\/wp-json\/wp\/v2\/media?parent=22203"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/de\/wp-json\/wp\/v2\/categories?post=22203"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/de\/wp-json\/wp\/v2\/tags?post=22203"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}