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847results about How to "Increased protection" patented technology

Method and device for preparing working layer of metallurgical hot roll by laser direct deposition

The invention discloses a method and a device for preparing a working layer of a metallurgical hot roll by laser direct deposition, which belong to the field of the application of laser technology. The method is characterized in that high speed steel-like powder and Co-based alloy composite powder are used as the materials for the working layer of the roll. Concretely, the method comprises: filling high speed steel-like powder or mechanically mixed powder which uses Co-based alloy and the like as a substrate material and is added with reinforcing and toughening submicron grains with different amounts into a powder supply system; and performing laser-assisted direct metal deposition on the surface of a roll core, of which the travel is controlled by a worktable, with synchronous powder supply to manufacture the working layer of the roll. A deposition method adopts an alternate deposition mode. The corresponding deposition thickness is determined according to the requirements on the thickness of the working layer. The hard phase content of the powder, in which the Co-based alloy is added as a hard phase, is increased layer by layer so as to form a gradient deposited layer. In the method, the reinforced, toughened and wear-resistance working layer is prepared on the surface of a cheap hot roll core part material by laser-assisted metal direct deposition technology under specific process conditions.
Owner:JIANGSU UNIV

Preparation method and construction process of waterborne marble-imitated multicolor paint

The invention discloses a preparation method and the construction process of a waterborne marble-imitated multicolor paint, in particular to a compounding technology and the construction process of the water-in-water type multicolor external wall paint. The paint consists of a disperse phase and a disperse medium, wherein the waterborne multicolor dispersoid containing water-soluble colloid is taken as the disperse phase and the water is taken as the disperse medium, namely the multicolor dispersoid is uniformly dispersed in the water-dispersed medium containing the film-forming substance. The wall paint has excellent wall decoration and protection performance and high performance-to-price ratio; and as the coating is thin and light and has elasticity and stain resistance, the paint can be applicable to the high-rise external walls and the external heat-preservation coating decoration, thus solving the problem that the self-weight is large in the practical application process of the marbles, the wall bricks and the glass curtain walls. In the invention, the wall paint solves the construction localization that the special spraying gun is only used for the waterborne multicolor paint, the normal spraying gun for building can be used, therefore, the construction is convenient and is easy for operation, and the wall paint has wider application prospect.
Owner:鳄鱼尼卡(上海)新材料有限公司

Enclosed return circuit hydraulic beam-pumping unit utilizing frequency conversion technology

This invention publicized one kind to use the frequency conversion technology closed type the return route hydraulic pressure pumping unit The application frequency conversion technology control motor rotational speed, the control pumps the output current capacity, then the control pumping unit running rate, may enable the oil pump the dynamic coordination, the production increase, the energy conservation obvious: The frequency conversion velocity modulation can provide the current capacity according to the system demand the low overflow loss, how regardless of the load does change, the output all can adapt the load request change, has very strong automatic control About the use the limit switch, the speed, the position transmitter and so on, through the controller, the frequency changer realization to the electric motor and the control valve electro-magnet and so on the vector transformation control technology, the realization overloads, crosses the electric current, overvoltage, the instant loses speed and so on the protection function This invention from enhances the pumping unit the overall efficiency to embark, in reduces the pumping unit the installing equipment power, effectively uses the pumping unit under good energy at the same time, maximum limit enhances the hydraulic pump and the electrical machinery efficiency This pumping unit may widely apply to the oil field extraction
Owner:ZHEJIANG UNIV

Portable cutting device

InactiveCN107317166AAutomatically control power supply plugging and unpluggingAvoid the risk of electric shockCoupling device detailsEngineeringMechanical engineering
The invention discloses a portable cutting device. The portable cutting device comprises a cutting machine and a socket, wherein the cutting machine comprises a cutting table, a cutting gear and a base, the cutting gear is embedded into the cutting table and is connected with the cutting table in a rotating and matching way, the base is arranged at a bottom part of the cutting table, a pin is arranged at a bottom part of the socket, a power line is arranged at a bottom part of the pin and is connected with a bottom surface of a rear side of the base, an accommodating bin is arranged at a bottom part of the socket, sliding grooves are formed in a left side and a right side of the accommodating bin, studs are arranged in the sliding grooves, top parts of the studs are connected with a motor, a lifting plate is arranged in the accommodating bin, two side ends of the lifting plate penetrate through the sliding grooves and are in threaded connection with the studs in a matching way, a lifting block is arranged at a bottom part of the lifting plate, the bottom part of the lifting block penetrates through a bottom wall of the socket and is movably connected with the bottom wall of the socket in a matching way, first sliding grooves are symmetrically formed in a left part and a right part of the lifting block, hole grooves are formed in top parts of the first sliding grooves, and a connection groove is formed in an end surface of the bottom part of the lifting block. The portable cutting device is simple in structure and high in safety, and is convenient to operate, and automatic connection power supply can be achieved.
Owner:邵潘英
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