Welcome to Jinan Institute of Metallurgical Science
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Quality Assurance
In the continuous development of tool materials, surface-coated cemented carbide is widely used
The composite silicon nitride ceramics use the richest silicon in nature as the main raw material. After grinding, the screened silicon powder is nitrided to make silicon nitride (Si3N4) powder, and then graphite is added together with other additives. The mold is then filled with nitrogen in a hot pressing sintering furnace, and sintered under the conditions of pressure: 200-250 kg/cm and temperature: 1810-1820 °C. Its main performance characteristics are: high hardness, good wear resistance, hardness can reach 93 ~ 94HRA; heat resistance, good oxidation resistance, can reach 1200 ~ 1300 ℃. Silicon nitride reacts less chemically with carbon and metal elements and has a low friction factor. Practice has proved that it is not sticky for cutting steel, copper and aluminum, and it is not easy to produce built-up edge, thereby improving the processing quality of parts.
27
2016
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04
Purchasing difficulty increases, the overall tungsten market is slowly rising
The price of tungsten raw materials continues to rise, and manufacturers are reluctant to sell at high prices, resulting in increased procurement difficulties. Tungsten powder manufacturers have raised their quotations one after another, and the overall tungsten market has shown a slow upward trend.
20
2016
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04
Cermet cutting tool Ti (CN)-based cermet tool is made of titanium carbonitride (TICN) as the wear-resistant phase, metal Mo, Ni as the binder phase, and the cermet tool material is sintered at high temperature. Flexural strength and fracture toughness. It is suitable for the processing of ordinary steel materials, and is especially effective in finishing and high-speed milling of steel parts.
19
2016
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04
my country's rock drilling tool production has made great progress after decades of development
After decades of development, the production of rock drilling tools in my country has made great progress. On this basis, further analysis and understanding of the production status and development direction of rock drilling tools will have a certain role and significance in promoting the technological progress and quality improvement of my country's brazing steel drilling tools.
18
2016
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04
Contact Details
INTERNATIONAL SALES
Tel : +86-0531-58672336，58672337, 58679328
Fax : +86-0531-58679328
Email : info@jimscarbide.com
Address: No. 18111, Jingshi East Road, Zhangqiu District, Jinan City， Shandong Province，China
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