4results about How to "Low elemental content" patented technology

This utility model provides an electrolytic generator and hot water equipment for supplementing minerals. The electrolytic generator includes a shell, a mineral filter element, and an electrode module. The shell is connected to an inlet pipe and an outlet pipe. The electrode module is connected to the shell. The mineral filter element is disposed in the shell and includes a cover plate and a filter element body. The cover plate and the filter element body are detachably connected. The filter element body contains minerals and is connected to the shell. The detachable connection between the cover plate and the filter element body allows for adjustment of the type and quantity of minerals and facilitates replacement of minerals. While supplementing the mineral element content of the water, it also increases the ion concentration of the water. Electrolysis of the incoming water increases the hydrogen and oxygen content of the water.

This application relates to a low-alpha-ray silica and its preparation method. The method involves adding a high-purity sodium sulfate solution to water glass, followed by the sequential addition of dilute sulfuric acid solutions of varying concentrations for aging. The resulting precipitate is then calcined to obtain low-alpha-ray silica with Th ≤ 5 ppb and U ≤ 5 ppb. The sodium sulfate solution optimizes the precipitation process in two ways: first, it increases the ionic strength of the solution, compresses the colloidal double layer, and disrupts the metastable state of the system, thus promoting the aggregation and crystallization of the target precipitate; second, sulfate ions preferentially complex or inhibit the precipitation tendency of impurity cations based on the common ion effect; furthermore, the dilute sulfuric acid solution promotes the reaction and rapid precipitation of silicate ions with hydrogen ions, causing the Th and U ions encapsulated in the precipitate to precipitate out, thereby reducing the impurity content in the solution. This low-alpha-ray silica, due to its extremely low Th and U content and good thermal conductivity, can be widely used in high-performance and special-purpose chip packaging fields.

The application discloses a kind of foamed metal foil for grain boundary diffusion, neodymium iron boron diffusion magnet and preparation method.The preparation method of the foamed metal foil for grain boundary diffusion of the application comprises the following steps:1) depositing a rare earth alloy film on the surface of a foamed metal foil sheet to obtain a coated foamed metal foil sheet;2) fold the coated foamed metal foil sheet obtained in step 1) in half, with the coated side facing in, and compress after folding to obtain a foamed metal foil for grain boundary diffusion.The foamed metal foil for grain boundary diffusion of the application enhances the adhesion of the rare earth alloy film, and when used for grain boundary diffusion, it increases the coercivity of the neodymium iron boron magnet while reducing the drop in remanence.

This invention relates to the field of welding technology, specifically to a pretreatment method for weldable parts, a composite manufacturing method, and a hot-stamped component. The pretreatment method for the weldable parts includes: before welding the edge of a coated steel plate to be welded, performing a heat treatment to melt the coating on the edge, and immediately extruding away the coating elements from the surface of the edge to be welded, forming a weldable area. This invention uses heat treatment to melt the coating and extrusion to remove the coating elements from the edge to be welded. This invention has high coating removal efficiency, eliminates the need for a pretreatment production line, and eliminates the need for prefabricated specific gaps between weldable edges and special high-alloy welding wire, thereby significantly reducing the cost of tooling fixtures and welding wire and improving welding loading efficiency. Furthermore, it ensures that the weld joint performance is qualified and the quality is stable after heat treatment in mass production.