2results about How to "Reduce oxygenation" patented technology

This invention relates to a method for identifying the magnetic properties of a mixture of tungsten carbide powder and cobalt powder. The method includes the following steps: (1) sampling the mixture of tungsten carbide powder and cobalt powder and sealing and storing the sample; (2) preparing the sealed sample into an identification compact, storing the compact in a fixed environment until the expiration date, then placing it in a graphite boat and sintering it together with a large batch of products; (3) testing the magnetic properties of the sintered identification compact. The identification method simulates the actual production cycle to the greatest extent possible. The graphite boat isolates the sample from atmospheric influences without causing carbon buildup, and the identification results can reliably guide large-scale production.

The invention belongs to the technical field of casting, and particularly relates to a die casting protection casting device and a using method thereof. The die casting protection casting device is connected to a ladle nozzle in a sealed mode and comprises an upper sealing assembly, a lower sealing assembly and an adjusting device, and the upper sealing assembly and the lower sealing assembly are connected in a sealed and pressed mode. The adjusting device is connected to the steel ladle casting vehicle and connected with the upper sealing assembly. A ladle nozzle and a molten steel flowing area are wrapped, non-oxidation protection in the whole casting process is achieved, and the casting blank quality is improved.