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396 results about "Line heating" patented technology

Laser heating assisted turning device and method

The invention provides a laser heating assisted turning device and method. The laser heating assisted turning device comprises a turning device body, a laser device, a non-contact temperature measuring device and a control device, wherein a tool and a workpiece are fixed to the turning device body, the tool is detachably connected with the turning device body, the laser device is used for heating the workpiece through laser, the non-contact temperature measuring device is used for acquiring the temperature at the cutting position of the workpiece in real time, and the control device is used for comparing data of an optimum temperature field stored in the control device with temperature data acquired by the non-contact temperature measuring device in real time and controlling the laser device to adjust laser parameters so as to achieve the optimum temperature field if difference exists. The laser heating assisted turning device has the advantages that the laser parameters are adjusted in a data matching mode so that the temperature field at the cutting position of the workpiece can be always consistent to the optimum temperature field, the cutting performed in the temperature field makes the service life of the tool longest, the machined surface quality of the workpiece is the best, and the turning efficiency is the highest.
Owner:HARBIN INST OF TECH

Tensile straightening device for on-line heating and straightening process of magnesium alloy extrusion

The invention discloses a stretching-straightening device for an online heating-straightening process of a magnesium alloy extrusion material, comprising a stretching-straightening device and a heating device. The stretching-straightening mechanism comprises a bracket, a stretching drive mechanism and a clamping drive mechanism. Double rails are arranged on the bracket. The rail is provided with a chuck I and a chuck II which are matched with the surfaces of the rails in a sliding manner. At least one chuck is capable of sliding forward and backward along the rail direction with the action ofthe stretching drive device. The chuck I and the chuck II are used for generating clamping forces via the clamping drive mechanism respectively. The heating device comprises a lifting mechanism and aheating mechanism. The heating mechanism comprises a positive clamping electrode, a negative clamping electrode and a transformer. The lifting mechanism is arranged under the double rails. The heating device of the stretching-straightening device is capable of guaranteeing that the extrusion material is expanded freely during heating without generating heat stress. The bending phenomenon caused by the heat stress and the instability phenomenon caused by the combined action of the heat stress and the self gravity are avoided via effective support during heating.
Owner:重庆昱华新材料科技有限公司

Machine head device capable of adjusting wall thickness of extrusion pipe

The invention belongs to a machine head device capable of adjusting the wall thickness of an extrusion pipe without dismantling a core mould in a neck ring mould in the technical field of polymer material processing mechanical equipment. A core mould inner shaft is sequentially provided with a lower expansion sleeve, an upper expansion sleeve and a core mould inner cushion block, a thread arranged at the right end of an adjusting nut is screwed into a nut arranged at the right end of the core mould inner shaft; a machine diameter is used for connecting the head part of an extrusion machine screw, the periphery of the machine diameter is provided with a wavy line heating ring, a transition block is arranged into a mandrel and a main mould body from a left port of the main mould body, the mandrel is connected with the main mould body into a whole; a thread arranged at the left end of a core mould body is connected with an inner thread arranged at the right end of the mandrel into a whole; the neck ring mould is arranged at the left end of a pressure sleeve, an inner thread at the left end of the neck ring mould is correspondingly assembled and connected with an outer thread at the right end of the main mould body; the neck ring mould and the main mould body form a runner inner wall of an extrusion machine head, the inner diameter of the neck ring mould is the outer diameter of the extrusion pipe, and the outer diameter of the core mould body is the inner diameter of the extrusion pipe. The machine head device capable of adjusting the wall thickness of the extrusion pipe has the advantages of simple structure, labor, financial resources and energy sources saving, and the like.
Owner:QINGDAO UNIV OF SCI & TECH

On-line heating device and heating method of magnesium alloy sheet warm rolling rollers

The invention discloses an on-line heating device and a heating method of magnesium alloy sheet warm rolling rollers. The on-line heating device is composed of a heating furnace, a positioning device and a temperature control module, the heating furnace is fixed on a rolling mill stand through the positioning device, and the temperature control module is used for detecting the temperature in the heating furnace and regulating heating power in real time. The heating method includes: firstly sealing preheating is performed on a working roller until the temperature on the surface of the working roller reaches a target value, and thermal insulation is performed; the heating device is positioned, and simultaneously all supporting rollers and the working roller are moved to the position where normal temperature rolling of magnesium alloy is performed; trial rolling is performed on magnesium alloy blanks to obtain the optimum temperature value; and finally normal rolling is started, and heating at the ideal temperature is achieved through feedback control. The structure of an existing roller does not need to be changed, and solid rollers with high rigidity and strong reliability can be used; a scheme that normal heating is performed after sealing preheating is adopted to achieve rapid heating of the rollers; and a temperature control strategy with double-target temperature is adopted to obtain the ideal roller surface temperature.
Owner:JILIN UNIV

Hot roller heating and rolling device and method for magnesium alloy strips

ActiveCN105521996AAchieve large strain continuous rollingImprove thermal conductivityTemperature control deviceRollsLine heatingRolling mill
The invention discloses a hot roller heating and rolling device and method for magnesium alloy strips. The device comprises a conveying roller way, one or more rolling mill stands, one or more rollers, a first infrared thermometer, a second infrared thermometer, induction coils, a PLC and a rolling parameter operation table, wherein the conveying roller way is composed of one or more conveying rollers, and the magnesium alloy strips are arranged between the rollers; in the rolling process of the magnesium alloy strips, the rollers transfer heat to rolled pieces for realizing the on-line heating and rolling technology of magnesium alloy on the basis that the magnesium alloy has the advantages that the heat conduction coefficient is high, heat transfer is fast and the high-frequency induction heating efficiency is high, the outlet temperature of the rolled pieces can be accurately controlled by controlling the surface induction heating temperature of the rollers, heating and rolling can be carried out on normal-temperature strips, temperature compensating and rolling can be carried out on hot strips, the temperature drop rate of the strips in the rolling process can be lowered, the occurrence probability of edge cracks can be lowered, and the quality of finished products can be improved.
Owner:NORTHEASTERN UNIV

Large support roller overlaying workstation and operation method thereof

The invention relates to a large support roller overlaying workstation and an operation method thereof. The large support roller overlaying workstation comprises a roller support device, a roller driving device, an online heating system, a welding system and a flux recovery system; a support roller is supported and positioned by the roller support device, and can be driven by the roller driving device to rotate; a door type heating cover of the online heating system covers the support roller to form a closed cover body; an insulation layer and an induction electric heating device are arranged on the inner wall of the cover body; a welding gun can vertically move to extend into the door type heating cover body; and the flux recovery system is arranged at the bottom of the door type heating cover. The support roller is heated and insulated in the closed cover body; multiple sets of welding mechanisms can synchronously perform welding; a flux can be automatically recovered; the continuous process of the large support roller as online preheating, welding, insulation and tempering can be realized; and the large support roller overlaying workstation is convenient for operation, high in automation degree and precise in temperature control, facilitates improvement of the overlaying quality of the support roller, improves the repair efficiency, and fills the blank of the technology.
Owner:辽宁天利再造科技股份有限公司
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