32results about How to "Simple coloring process" patented technology

The invention discloses a method for coloring aluminum and an alloy surface thereof, which comprises the following steps of: at first, cleaning and polishing the aluminum or the aluminum alloy surface; carrying out constant-pressure anode preoxidization for 20 minutes to 3 hours under the preoxidization voltage of 10 to 20 volts by using sulfuric acid electrolyte with the concentration of 0.1 to 3mol / liter under the conditions that the well-processed aluminum or aluminum alloy is used as an anode and graphite is used as a cathode; and then oxidizing the aluminum or the aluminum alloy by utilizing a voltage which varies periodically based on time to obtain a structurally laminar alumina photonic crystal, and coloring the aluminum or the aluminum alloy surface by the structural color of an optical forbidden band of the alumina photonic crystal, so that different colors can be adjusted within a scope of visible lights by maintaining constant time and changing the voltage only or maintaining constant voltage and changing time only. The coloration method of the invention has the advantages of no need of depositing metal ions, simple process and low cost, wide adjustment scope of colorsand less pollution.

The invention discloses a chemical coloring liquid of stainless steel and chemical coloring method, which comprises the following parts: chromic anhydride, sulfuric acid, water, accelerant, stabilizer, brightener and homogeneous agent. The coloring method comprises the following steps: predisposing the stainless steel surface; coloring; hardening film through little current; sealing; drying.

The invention discloses a three-way connecting fitting of a face pipe, which comprises a rigid plate, a clamping sleeve of an upper plastic material and a clamping sleeve of a lower plastic material, wherein the clamping sleeve of the upper plastic material and the clamping sleeve of the lower plastic material are mutually buckled and form a sealing component of the face pipe, the rigid plate is arranged in the clamping sleeve of the upper plastic material and the clamping sleeve of the lower plastic material, which are mutually buckled, and forms a connecting component for connecting the face pipe, and a connecting part of an upright post, which penetrates through the clamping sleeve of the lower plastic material, is arranged on the rigid plate. The three-way connecting fitting of the face pipe has the advantages of simple structure, high joint strength, good toughness, good sealing property and low cost.

The invention discloses a connection fitting for face pipes. The connection fitting for the face pipes comprises a plastic material clamping sleeve and two rigid plates, wherein the plastic material clamping sleeve is used for sealing end openings of the face pipes and is provided with two face pipe sealing end openings; the two rigid plates are used for connecting the face pipes and are arrangedinto the sealing end openings of the face pipes respectively; and the two rigid plates are fixedly connected with each other. The connection fitting for the face pipes has the advantages of simple structure, high connection strength, high toughness, high sealing property and low cost.

The invention discloses a method for coloring seaweed fibers with nano pigments. The method comprises the following steps: taking a certain amount of ultrafine water-based nano pigments and adding them to seaweed fiber spinning stock solution, stirring to disperse the pigment particles evenly, filtering and defoaming Afterwards, wet spinning is carried out at room temperature to prepare colored seaweed fibers, and the draft ratio of the fibers is 100-300%. The seaweed fiber prepared by the invention has uniform coloring, high washing and sunlight fastness, saves water resources and energy consumption, realizes clean production, and has good application prospects in the fields of clothing and environmental protection.

The invention discloses a face pipe connecting component. The connecting component comprises a rigid plate, an upper plastic material sleeve chuck and a lower plastic material sleeve chuck, wherein the upper plastic material sleeve chuck and the lower plastic material sleeve chuck are mutually buckled and form a sealing component of a face pipe; and the rigid plate is arranged in the upper plastic material sleeve chuck and the lower plastic material sleeve chuck and forms the connecting component used for connecting the face pipe. The face pipe connecting component has the advantages of simple structure, high connecting strength, high toughness, high tightness, low cost and the like.