30results about How to "Control coating thickness" patented technology

The invention relates to a method for coating a coat onto a substrate for effectively controlling surface of the coat spraying liquid medium on the substrate through a nozzle, effectively controlling formation of thickens of the coat forming through the liquid medium, and maintaining quality control of the coat with high production efficiency, comprising the following operation steps of: firstly installing a distance sensor 6a-6c, for measuring the distance between a medium layer surface LS forming on substrate 1S and 1P and a nozzle 4; putting a measuring substrate 1S on a work bench 2, and undergoing coat measurement for the measuring substrate 1S through the liquid medium sprayed by the nozzle when a nozzle clamp holder 5 moves forwards related to the work bench, performing measurementoperation by the distance sensor when the nozzle clamp holder moves backward related to the work bench, starting a nozzle positioner 3a-3c according to a result of measurement operation performed by the distance sensor, as the device setting nozzle position for forming suitable coat, so as to coat the liquid medium L onto the substrate 1P.

The invention discloses a method for preparing a boride solid solution modified silicon-based coating on the surface of a carbon material, which belongs to a method for preparing an anti-oxidation coating on the surface of a carbon material. First configure boride solid solution NB with controllable content 2 Modified silicon-based composite ceramic slurry, wherein N=Zr x Ta 1‑x , Hf x Ta 1‑x or Zr x f 1‑x , x=0~1; Secondly, brush, dip or spray NB on the surface of the carbon material substrate with SiC inner coating 2 The pre-set layer of slurry is then heat-treated and sintered to form a coating. The present invention controls the solid solubility of the solid solution phase in the coating by using the boride solid solution powder as the raw material; through the regulation and design of the composite ceramic slurry powder ratio, the component content of the coating can be controlled; by brushing , dipping or spraying times control, can realize the control of coating thickness. After the pre-set layer is heat-treated in the later stage, the density of the coating and the bonding strength of the interface of the inner coating can be improved. The invention has simple preparation process, dense and uniform coating, and low production cost, and is suitable for carbon material parts with various shapes and sizes.

The invention discloses a novel cataplasm coating forming device. The novel cataplasm coating forming device mainly comprises a device main body, a constant-temperature discharging hopper, a constant-temperature speed control wheel, a discharging control opening, a cloth releasing device, a double-compression-roller feeding device, a longitudinal cutting device, a transverse cutting device, a control panel and a conveying device; the cloth releasing device, the constant-temperature discharging hopper, the double-compression-roller feeding device and the longitudinal cutting device are sequentially arranged on the upper top surface of the device main body from left to right, the transverse cutting device is fixed at the upper end of the right side surface of the device main body through a lower supporting plate, and a water bath interlayer is arranged on the periphery of the outer side of the constant-temperature discharging hopper; and the constant-temperature speed control wheel is arranged below the inner part of the constant-temperature discharging hopper, and the discharging control opening is formed in the bottom end of the constant-temperature discharging hopper. According tothe novel cataplasm coating forming device, structure is simple, and design is reasonable; the parameters of the paste content, the coating width, and the coating thickness are realized; and more uniform and smooth of the coating are guaranteed.