42results about How to "Guaranteed deposition" patented technology

The present invention provides a treatment method for a copper-molybdenum material before gold-plating. The method comprises the steps of: performing roughening treatment to the copper-molybdenum material after deoiling treatment in a chemical roughening solution; performing stripping treatment to the copper-molybdenum material after the roughening treatment in a chemical stripping liquid; after activation of the copper-molybdenum material after stripping treatment, performing a first nickel plating treatment; in the protective gas atmosphere, performing heat treatment to the first nickel-plated copper-molybdenum material at 900 ~ 980 DEG C; and performing a second nickel plating treatment to the copper-molybdenum material after the heat treatment. According to the present invention, excessive corrosion of copper-molybdenum material is prevented, which is conducive to improve the binding force in the subsequent nickel plating treatment, and ensures the nickel plating layer to deposit on a substrate; pollution is little; and the binding force of the nickel plating layer and the brazability are good.

The invention discloses a device for manufacturing a plating layer of a metal multilayer film. The device comprises electrolytic baths arranged at intervals along the circumferential direction and power supplies for providing different current for an electrolyte in each electrolytic bath respectively, wherein metal pieces which are in conducting connection with positive electrodes of the respective power supplies extend into the electrolytic baths respectively in a suspended mode; a rotary mechanism comprises a rotating shaft of which the axis extends along the up-and-down direction and a power device for driving the rotating shaft to rotate; cantilever supports which extend along the radial direction of the rotating shaft are fixed to the rotating shaft; hanging frames are arranged on the cantilever supports; a current converter is arranged above the cantilever supports, and comprises fixed contact pieces which are arranged at intervals along the circumferential direction of the rotating shaft and are in one-to-one correspondence and conducting connection with negative electrodes of the power supplies and movable contact pieces which are in conducting connection with the workpieces; and the movable contact pieces are assembled on the side wall of the rotating shaft in an insulation mode and are in pivot friction fit with the fixed contact pieces sequentially. The integral device is simple in structure and convenient to operate, and the plating layer of the metal multilayer film can be manufactured only by hanging workpieces on the hanging frames.

The invention discloses a hydrocracking method. The method comprises the following contents: heavy distillate oil raw material and hydrogen orderly enter a hydrorefining reactor, a hydrocracking reactor and a separation system after being mixed; a cylinder with a bottom is arranged at an upper part of the hydrorefining reactor, the height of the cylinder is 4%-20% of the height of the hydrorefining reactor, and the outer diameter of the cylinder is 85%-95% of the inner diameter of the hydrorefining reactor; holes through which the material flow can pass are formed on the bottom and the side wall of the cylinder, and the sizes of the holes are 1-40 mesh; the cylinder is filled with hydrorefining catalyst, the infrared acid amount and the active metal content of the filled catalyst are in anenhanced situation along the material flow direction, the catalyst pore volume, the particle size and the specific surface area are in a reduced situation, and the bottom of the cylinder is filled with the conventional hydrorefining catalyst. Compared with the existing hydrocracking technology, the hydrocracking process disclosed by the invention is more flexible in flow, can process more inferior raw material, and greatly improves the processing capacity of the device.