Finishing new technology: Accept rice is compound the fundamental of plating technology

Accept rice is compound plating technology is the new technology that just begins research in last few years, at present the mechanism Shang Moke of compound plating technology learns accept rice, authoritative academic explanation. Involve accept rice especially not grain of dissolve sex solid in cathode kinetic process behaves mechanism of behavior, action mediumly, more the research that does not have deep person, also did not see domestic and international document reports. Accept rice not grain of dissolve sex solid is how to arrive at cathode (workpiece > the surface, distributing in the dispersion in matrix metal, have 3 kinds of not quite mature views, offer reference only. 1) alternative adsorption says accept rice not grain of dissolve sex solid joins electrolyte after solution is medium, undertake sufficient mechanical and compound 〔 is like agitate of mechanical and supersonic vibration, abrade, magnetic force to wait) , make accept rice not grain of dissolve sex solid is even ground dispersion distributings in electrolyte solution. In mechanical and complex process, rice of a few accept not grain of dissolve sex solid is met selectively the certain metal in adsorptive electrolyte ionic. Eletroplate, in brush plating process, below the action of electric field force, metal ion is carrying accept rice not grain of dissolve sex solid to cathode (workpiece) the surface moves, reductive reaction produces after arriving at cathode, in the metal ionic by reductive into metallic atomic at the same time, accept rice not grain of dissolve sex solid also by in succession reductive metallic atom captures, enchase in metallic matrix film. Meanwhile, as a result of accept rice not grain of dissolve sex solid very surface of workpiece of press close to, can produce the physisorption of type of Fan Dehua force not only, and the character as a result of oneself of accept rice grain, the atom that rich collect returns meeting and workpiece surface metal or film metal to go up in the electron of surface of accept rice grain produces chemical bond adsorption. This also is accept rice the inference of strength of union of common and compound film explains the combinative strength prep above of compound film. Of course the scientific sex of this one explanation relies on experimental test and verify even. 2) complexing bag Fu says to be opposite above all accept rice not grain of dissolve sex solid undertakes exterior pretreatment, next treated accept rice not grain of dissolve sex solid and electrolyte solution have sufficient machine compound, add the material such as agent of person surface activator, complexing to the middle of compound solution at the same time. Make compound rice of the accept in the solution after not grain of dissolve sex solid and metal ion is wrapped by complexing at the same time Fu is inside group of ion of a complexing. In eletroplate, when brush plating, chemical plating, complexing ion group arrives at cathode (workpiece) reductive reaction produces after the surface, the metal is ionic by reductive Chengyuanzi while, accept rice not grain of dissolve sex solid also by in succession reductive metallic atom is embedded set. Form accept rice finally not grain of dissolve sex solid distributings in the dispersion in film matrix metal. 3) outside force is carried say to be in eletroplate, in process of brush plating, chemical plating, take certain craft step, if use beater, have mix to compound plating solution, the accept rice that makes compound plating solution medium not motion of grain of dissolve sex solid rises, in motion the part arrives at cathode (workpiece) accept rice of the surface not grain of dissolve sex solid is captured by reductive metallic atom, happen in all deposit. Use transfer pump or plating pen to go to the transportation with plating fluid constant in a steady stream sometimes workpiece surface, the accept rice in plating fluid not grain of dissolve sex solid is carried subsequently workpiece surface, among them rice of one share offer not grain of dissolve sex solid is in workpiece (cathode > the surface is captured by metallic atom, happen in all deposit. Most accept rice not grain of dissolve sex solid returns solution again in. In chemical plating, need to heat plating fluid to constant temperature, heat to plating fluid rice of the accept in can promoting plating fluid not the motion of grain of dissolve sex solid, be helpful for in all deposit. Of course the power that outside force carries wants measurable. For example, agitate force is too weak, the accept rice that carries workpiece surface not grain of dissolve sex solid is too little, go against in all deposit. And if agitate power is too great, the accept rice in plating fluid not grain of dissolve sex solid gets outside force too big, campaign is too intense, the accept rice that arrives at workpiece surface not grain of dissolve sex solid still does not have there's still time and metal in all deposit, below effect of outer strength from workpiece apparently fall down, in returning solution, go against instead in all deposit. Accept rice not grain of dissolve sex solid and metallic atomic in all deposit is a complex process. Above view, each have the reason that decides firstly, also have its apparent inadequate. Accordingly, be in in all in deposit process, likelihood the circumstance of 3 kinds of views meets above coinstantaneous, it is the result of joint action. Also may be in some specific technology condition one plant or the main effect since some two kinds of views. Although at present all these has not gotten confirming adequately, but the craft step that takes around these 3 kinds of views produced favorable result. CNC Milling