32results about How to "Uniform surface quality" patented technology

A process is set forth for cold rolling of a metal strip, comprising: making the metal strip (18) pass through a roll gap (17) between two counter-rotating rolls (16); blowing cold and / or liquefied gas into the area of roll gap (17) by at least one nozzle (4) of a nozzle device (1); mounting a case (2) including a front top (6) partly surrounding at least one nozzle (4), wherein the front top (6) covers the nozzle device at least round the nozzle (4) of the nozzle device to prevent being effected by surrounding atmosphere so that water or ice generated round the nozzle (4) can be prevented; the front top (6) is provided with at least one opening (3), each of which aligns with the nozzle (4); heating at least one of the case (2) and the front top (6) to prevent water or ice aggradation. The invention further provides a corresponding cold roller for a metal strip.

The invention provides a live axle tunneling / turning method and device, which belong to the field of ultraprecise cutting and complicated curved surface cutting. The method comprises the following steps: clamping a workpiece at the front end of a main shaft of an ultraprecise numerically-controlled lathe; arranging a live axle tunneling / turning device on an X-axis slide carriage or Z-axis slide carriage; and carrying out active control on the drive signals of two live axles of the live axle tunneling / turning device, thus synchronously forming a rapid tool reciprocating motion required for theturning generation of free curved surfaces and a rapid tool tunneling / turning motion required for realizing the cutting of materials difficult to machine. Because of having multi-element varying-parameter cutting characteristics, the invention can efficiently realize the high-quality generation of complicated curved surfaces of materials difficult to machine.

The invention relates to the field of iron and steel smelting, and relates to the production and manufacture of cold-rolled weather-resistant steel for automobiles, in particular to a low-cost weather-resistant steel for 310MPa grade cold-rolled automobiles and a preparation method thereof. The chemical composition and weight percentage of the weathering steel are: C: 0-0.09, Si: 0.10-0.40, Mn: 0.20-0.50, P: 0.05-0.12, S: 0-0.015, Al: 0.010-0.030, Cu: 0.2 ~0.4, the balance is Fe and unavoidable impurities. The present invention mainly adopts measures such as controlling the time of hot rolling in the furnace, the pressure of high pressure water for dephosphorization, and the temperature of rough rolling, so as to reduce the occurrence probability and degree of Cu embrittlement and iron oxide scale. The steel has the characteristics of low cost, excellent surface quality, processing and forming, and excellent atmospheric corrosion resistance. It can be used in industries that require corrosion resistance, such as automobiles and home appliances.

The invention provides an electric heating double-tube type contact singeing device, which belongs to the field of textile machinery. It is composed of crater body, heating element, heat-carrying tube, tile frame, bracket and heat-carrying tube rotating device. The two ends are installed on the bracket fixed on the burner body, and the heat transfer tube rotating device is installed on the burner body and connected with the heat transfer tube. In the present invention, the two functions of electric energy heating and heat carrying are respectively completed by two different parts, so that it is safer and more reliable, has stable performance, long service life and remarkable energy-saving effect. In addition, because the heat-carrying tube is always in a rotating state when it is working, it will give the heat-carrying tube with heat loss a partial cooling time for the wall surface to heat up and recover, so that the temperature of the wall surface is uniform, and the wall surface of the tube body contacts and rubs evenly with the fabric, so the surface quality of the processed fabric is uniform. unanimous.

The invention discloses a five-axis automated device for mobile phone shell numerical control grinding and polishing. The five-axis automated device comprises a base, gantry stand columns, an X-axis module, a Y-axis module, a Z-axis module, a C-axis rotating table and a grinding and polishing tool system. The gantry stand columns and the Y-axis module are arranged on the base. The X-axis module is arranged on the gantry stand columns. The Z-axis module is arranged on a guide rail slide block of the X-axis module. The grinding and polishing tool system is fixedly connected with a guide rail slide block of the Z-axis module. The C-axis rotating table is fixed to a guide rail slide block of the Y-axis module. A mobile phone shell pneumatic clamping device is fixed to the C-axis rotating table. The five-axis automated device is compact in structure and easy to carry, clamping of mobile phone shell pneumatic clamps is reliable, the surface quality of ground and polished mobile phone shells is uniform, one mobile phone shell can be ground and polished within 1 min, the production efficiency is greatly improved, and the production cost of mobile phones is reduced.

The invention provides a production method of a zirconium and zirconium alloy strip coil. The production method comprises the steps that a zirconium or zirconium alloy strip blank is heated in a heating furnace before production and is rolled on a steekle mill or a tandem rolling unit to the thickness that the blank can be transferred to a cold mill to be rolled, and the blank is directly coiled; surface treatment is carried out on a hot-rolling zirconium coil obtained through rolling on a continuous annealing-shot blasting-acid pickling production line, and a zirconium strip obtained after surface treatment is a smooth and clean zirconium strip which is in the metal natural color and free of oxide skin or harmful air suction layers; then a cold mill unit is adopted for carrying out cold rolling on the zirconium strip to obtain a thin strip, and cold rolling is carried out after annealing is carried out in an on-line annealing or vacuum annealing manner in the process of cold rolling; and finally various finished zirconium or zirconium alloy thin strip products of target thickness are obtained in a rolled manner. According to the production method, the cost is low, the product quality is good, and the rate of the finished products is improved by more than 15%; the requirements of nuclear power, chemical engineering and other aspects for thin zirconium materials and zirconium strips for thin-wall zirconium pipe welding can be completely met; and energy saving and consumption reduction are achieved, and high practical value is achieved.

The invention discloses a vacuum micro-evaporation plating equipment assisted by ultrasonic vibration, which belongs to the technical field of evaporation equipment. A crucible, a manifold is arranged below the micro-deposition crucible; graphite heating electrodes are arranged around the micro-deposition crucible, and the graphite heating electrodes are connected to the manifold by a soft busbar; the interior of the manifold is provided with Ultrasonic vibration auxiliary system, the ultrasonic vibration auxiliary system includes a horn and a transducer arranged under the horn, the transducer is connected to the circuit in the manifold, and the horn is located in the micro-deposition crucible Directly below; the present invention uses graphite electrodes to directly heat the micro-deposition crucible, reducing electricity and heat energy loss, and making the internal temperature of the crucible uniform during the plating process.

The invention relates to special polishing fluid for plastic soft metallic materials and a method for preparing the polishing fluid and belongs to the technical field of the polishing fluid. The polishing fluid is prepared from a ground material, a solvent and additives which are in a certain volume ratio, namely 2% of brightener, 3% of diamond micro powder, 15% of additives and 80% of kerosene. The method comprises the steps of: adding the diamond micro powder into melted lard or vaseline, and stirring uniformly; then, adding the kerosene, and cooling down to room temperature for standby; and adding stearic acid particles (C17H35COOH), vegetable oil and spindle oil into a clean vessel, stirring uniformly, adding the brightener, and uniformly mixing and stirring the solution, thereby obtaining the polishing fluid. The surface of a niobium alloy workpiece processed by the polishing fluid is uniform in mass, is free from polishing lines and can reach a mirror polishing effect. Meanwhile, the polishing fluid can play a role in cooling, lubrication, adsorption and washing during processing and can also be applied to the mirror polishing processing of similar plastic soft metallic materials, the operation is simple, the efficiency is high, the cost is low, and no pollution is caused.