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06-08 

The first Biologic Magnesium alloy material Strategy Summit was held and domestic absorbable magnesium alloy scaffolds are expected to enter clinical trials within this year

On May 28, the first Bio-magnesium Alloy Materials Strategy Summit was held in the form of online meeting. The conference was hosted by National Engineering And Technology Research Center for Magnesium Alloy Materials, International Magnesium Society and Jouranl of Magnesium Alloy. The chairman of the conference was Pan Fusheng and Zhang Xingdong, academicians of the Chinese Academy of Engineering. The joint research and development team of "absorbable magnesium alloy stent" led by them announced at the conference that the domestic absorbable magnesium alloy stent will officially enter the clinical stage this year. The conference brought together well-known experts in materials science, engineering, clinical medicine and other fields, who shared the latest progress in materials research, material modification, material manufacturing, animal experiments and clinical trials of bio-magnesium alloys in China. Shao Mingli, former director of the China Food and Drug Administration and former vice minister of Health, Cui Yuting, deputy Secretary of the Party Committee of the Ministry of Science and Technology, and Ge Junbo, academician of the Chinese Academy of Sciences, addressed the conference. The participants fully exchanged views on the research and application of bio-magnesium alloy materials, and relevant experts presented the latest developments in this field. Pan fusheng said That China is a major magnesium resource country, a powerhouse in magnesium alloy material research and a major producer of magnesium products. In the past, to produce absorbable magnesium alloy support in China, most of the pipes were imported. Now, the industrial chain covering the production of absorbable magnesium alloy materials, rough processing of bars, pipe finishing and bracket manufacturing has been opened and implemented. This is an important milestone in the development history of China's stent industry. Eight years of hone Breakthrough in magnesium alloy support "neck jam" technology In terms of material science, stainless steel, titanium and its alloys, shape memory alloys and other common medical metal materials have biological inertia in human body and cannot be degraded. Magnesium is an essential trace element for the human body. Magnesium alloy has excellent biocompatibility and can be degraded in the human body. The degradation products of magnesium are non-toxic and will not cause inflammation and allergic reactions in the body. Therefore, magnesium alloy has become a very ideal medical implant material, thus bringing rich imagination space to the stent industry. Ge junbo said: "The history of interventional treatment of coronary heart disease has evolved from the earliest balloon expansion to subsequent metal stents, and then to drug-eluting stents. But the fatal drawback of drug-eluting stents is that metal remains in the body for a long time. A decade ago, the world wanted to develop an absorbable stent to replace current metal ones. Unfortunately, after so many years, although we have made some achievements, from the earliest Abbott launched polylactic acid stent, to the modern alloy stent. However, none of the supports we found to be ideal platforms. For now, magnesium is going to be a very good platform. We hope that through the study of magnesium alloy stent, we can have a good tool in clinical treatment of heart disease, myocardial infarction, peripheral vascular disease." At present, permanent stent implantation is faced with many problems, which has basically become the consensus in the industry. Firstly, stents are permanently retained in the blood vessels as foreign bodies, which is easy to cause chronic inflammation and lead to late and very late thrombosis and restenosis. Delayed endothelialization or compensatory dilatation of the vessels that lead to stent trabeculae may increase the risk of late thrombosis. Secondly, the natural Angle and curvature of blood vessels, as well as the throbbing and systolic functions of blood vessels, cannot be restored due to the long-term existence of stents. After implantation, the absorbable magnesium alloy stent can be gradually degraded, and the blood vessels gradually return to their natural state and physiological function, and the vascular risk caused by foreign bodies is significantly reduced. In addition, the mechanical properties of magnesium alloy are similar to those of bone and significantly higher than that of polylactic acid, which can be used to design and manufacture thinner scaffolder and promote endothelialization. Electropolishing process can also be used to treat the surface of magnesium alloy scaffolds to reduce the interference to hemodynamics. In the future, absorbable magnesium alloy scaffolds are expected to be applied in coronary intervention, peripheral intervention, neural intervention and other fields. Biotronik has been recognized as the most mature company in the field of absorbable magnesium alloy coronary stents. The compa

05-04 

Vorteile von Hartmetall

Hartmetall hat eine hohe Härte, Festigkeit, Verschleißfestigkeit und Korrosionsbeständigkeit und ist als "Industriezähne" bekannt. Es wird zur Herstellung von Schneidwerkzeugen, Messern, Kobaltwerkzeugen und verschleißfesten Teilen verwendet und ist weit verbreitet in Militär, Luftfahrt und Luftfahrt , Mechanische Verarbeitung, Metallurgie, Ölbohrungen, Bergbauwerkzeuge, elektronische Kommunikation, Bauwesen und andere Bereiche, mit der Entwicklung der nachgelagerten Industrien, die Marktnachfrage nach Hartmetall steigt weiter. Und in Zukunft werden die Herstellung von Hightech-Waffen und -Ausrüstung, Fortschritte in Wissenschaft und Technologie und die rasante Entwicklung der Kernenergie die Nachfrage nach Hightech- und hochwertigen und stabilen Hartmetallprodukten stark erhöhen.

05-18 

Die Vor- und Nachteile sowie Unterschiede von Schnellarbeitsstahl und Hartmetall

Schnellarbeitsstahl: Es handelt sich um einen kohlenstoffreichen und hochlegierten Stahl. Je nach chemischer Zusammensetzung kann er in Stahl der Wolfram- und Molybdän-Serie und je nach Schnittleistung in gewöhnlichen Schnellarbeitsstahl unterteilt werden

05-21 

Der Einsatz von Hartmetallwerkzeugen

Strukturteile: Als Strukturteile gibt es viele Produkte aus Hartmetall, wie z.B. rotierende Dichtringe, Kompressorkolben, Drehfutter, Schleifmaschinenspindeln, Lagerzapfen etc.