2results about How to "High metal utilization" patented technology

The utility model relates to metal casting technical field, and disclose a kind of low-pressure casting mould of adjustable casting cavity, including top die, bottom die, side mould, top rod, top rod plate, connecting plate, pull rod, the top die includes top die body, top die core, slider, inclined guide pillar, stop block, spring, the top die body is fixedly connected with stop block by bolt, and slidingly connected between slider, the top die core is fixedly connected with shunt cone, top die core and slider can be relatively moved between.The inclined guide pillar is fixed on connecting plate, connecting plate fixed pull rod, pull rod top end sets drive mechanism, for the lifting of inclined guide pillar, the slider corresponding inclined guide pillar direction sets a from top to bottom inclined through-hole, when inclined guide pillar moves downward, it can be inserted into the inclined through-hole of slider, slider is driven to move in direction away from top die core.This structure mould structure when switching size offset product does not need to add additional top die core, and can easily realize the change type work on die-casting machine platform, i.e. simple structure, convenient operation, improve metal utilization rate can also save time and increase production efficiency, save production cost.

This invention relates to the field of hydrocracking catalysts, and discloses a hydrocracking catalyst, its preparation method and application, and a method for hydrocracking treatment of residue oil. The hydrocracking catalyst contains molecular sieves, silicon-modified alumina, and active metal components. Optionally, the hydrocracking catalyst also contains alumina and / or additives. The content of the molecular sieve is 5-25 wt%, the content of the silicon-modified alumina is 30-60 wt%, and the content of the alumina is 0-20 wt%. The content of the active metal components, calculated as oxides, is 5-35 wt%, and the content of the additives, calculated as oxides, is 0-1.0 wt%. The catalyst provided by this invention has the advantages of large specific surface area, large pore volume, large pore size, and high metal content. When used in the hydrocracking treatment of residue oil, it not only exhibits high activity and good stability, but also improves naphtha selectivity, expands feedstock adaptability, and reduces hydrogen consumption.