55 results about "Quenching" patented technology

The invention relates to a high-strength steel plate which comprises the following chemical compositions according to percentages by weight: 0.26-0.35% of C, 0.15-0.50% of Si, 0.60-0.90% of Mn, 0.60-1.00% of Cr, 0.55-0.90% of Mo, 0.80-2.00% of Ni, 0.01-0.10% of Nb, 0-0.10% of V, 0.0006-0.0025% of B, 0.01-0.08% of Al, 0.003-0.06% fo Ti, the rest of Fe and inevitable impurities. A manufacturing method of the high-strength steel plate comprises the following steps of: smelting, casting, heating and rolling the steel plate, and then carrying out austenitization quenching thermal treatment on the steel plate in the temperature of 850-950 DEG C, and adopting water quenching treatment after austenitization; and finally carrying out tempering thermal treatment in the temperature of 180-300 DEG C and air cooling after tempering. The organization of the obtained steel plate is tempered martensite; the yield strength of the steel plate is greater than or equal to 1300Mpa; the tensile strength of the steel plate is greater than or equal to 1400Mpa; and the charpy impact energy, i.e. Akv (-20 DEG C) of the steel plate is greater than or equal to 30J.

The invention discloses a manufacture method for a slip sheet of an air conditioner compressor, relating to the parts of air conditioner compressors. The method comprises the steps of: taking the elements in percentage by mass: C 3.2-3.8%, Si 2.0-2.6%, Mn 0.5-1.0%, Cr 0.2.-0.6%, Mo 0.1.-0.6%, V 0-0.5%, B 0-0.1%, Ti 0.04-0.15%, Nb 0-0.5%, Cu 0-0.5%, P < 0.3%, S <0.1% and the balance of Fe; and carrying out smelting, inoculating, casting, grinding, quenching and tempering heat treatment, refining, polishing and ion-sulfurizing to manufacture the slip sheet product of the air conditioner compressor. According to the product, a certain amount of carbides and flake graphite and a tempered martensite substrate with good comprehensive mechanical property are formed in a cast structure, and the manufacture method overcomes the defects of high cost and tedious machining procedures of the traditional high-speed steel or stainless steel slip sheets.

The invention provides a method for producing a transparent clinker capable of being compounded with a colored glaze ceramic blank and relates to the technical field of building materials. The method comprises the following steps: taking quartz, potash feldspar, soda feldspar, calcite, soapstone, dolomite, barium carbonate, sodium carbonate, potassium carbonate, sodium borate and boracic acid, which are all 80-700kg and less than 100 meshes, and taking 100kg sodium chloride, sodium sulfate or fluorite, which is less than 100 meshes, as a clarifying agent; uniformly mixing the raw materials of the clinker, and then placing into a glass tank furnace for melting at 1520-1600 DEG C; and performing water-quenching, drying, crushing and screening on the melt material, thereby obtaining 20-200 mesh transparent clinker dry grains containing 50-70% of SiO2, 5-20% of Al2O3, 0-10% of CaO, 0-10% of MgO, 2-8% of K2O+Na2O, 0-8% of BaO, 0-8% of B2O3, 1-10% of clarifying agent and less than 0.5% of water. The method is used for producing the clinker; materials are selected within a preset component scope of the products; and the technology is standardized.

The invention relates to a multiphoton subpulse STED-SPIM (Selective Plane Illumination Microscopy) microscopic system realized by single wavelength, characterized in that the femtosecond pulse laser emitted by a femtosecond single wavelength laser is transmitted to a first splitter through a first polarization regulator to be divided into two beams of light, and a first beam of light is successively transmitted to a second polarization regulator, a second splitter, a third polarization regulator and a quarter-wave plate along a Y-axial direction to form an excitation light beam; a second beam of light is transmitted to an STED photoquenching system, and the light outputted by the STED photoquenching system is successively emitted into the second splitter, the third polarization regulator and the quarter-wave plate to be modulated into donut-shaped focus spots to form a quenching light beam; a scanner is used for scanning the excitation light beam and the quenching light beam to generate an excitation plate light source and an STED quenching plate light source; an excitation plate light source and an STED quenching plate irradiate an object to be imaged through an excitation objective lens to allow the flourescent dye of the object to be imaged to excite fluorescence, and excited fluorescence is imaged through an imaging objective lens, and is emitted to a photosensitive element or an analysis element successively through an optical filter and a convergent lens.

The invention provides thin thermoformed steel with tensile strength being not lower than 1700 MPa directly rolled by a sheet billet. The thin thermoformed steel with tensile strength being not lower than 1700 MPa directly rolled by the sheet billet comprises the following components, in percentage by weight, 0.26-0.30% of C, 0.31-0.35% of Si, 1.3-1.5% of Mn, not higher than 0.008% of P, not higher than 0.005% of S, 0.015-0.060% of Als, 0.31-0.35% of Cr, 0.031-0.035% of Ti or 0.031-0.035% of Nb or 0.031-0.035% of V or a mixture mixed by more than two of the three components in any proportion, 0.003-0.004% of B, 0.20-0.25% of Mo, 0.06-0.10% of Ni and not higher than 0.005% of N. The production method of the thin thermoformed steel comprises the steps of desulfurizing molten iron; smelting the molten iron by an electric furnace smelting or a rotating furnace and refining the molten iron; performing continuous casting; performing descaling treatment before putting the molten iron into a soaking pit furnace; performing soaking; performing heating; performing high pressure water descaling before putting the molten iron into a rolling mill; performing rolling; performing cooling; performing coiling; performing austenitizing; performing mould stamping forming; and performing quenching. The steel is high in strength, short in manufacture process and good in quality of product surface, the accuracy of thickness can be controlled within +/-0.03mm and the energy consumption can be greatly reduced; moreover, the steel has great significance to realize automobile lightweight.

The invention discloses a coke oven mobile motor vehicle interlocking automatic control system which is characterized by comprising a management module, a communication module, a control module, an alarming module and a coke vehicle PLC (programmable logic controller) control system. The management module comprises a master control computer and a printer. The communication module is a communication transceiver. The control module comprises a coke pusher controller, a coke barrier vehicle controller, a quenching vehicle controller, an oven number identifying subsystem and an accurate aligning subsystem. The alarming module is connected with the master control computer which is connected with the printer and the communication transceiver. The communication transceiver is respectively connected with the coke pusher controller, the coke barrier vehicle controller and the quenching vehicle controller. The coke oven mobile motor vehicle interlocking automatic control system is an automatic system firstly comprehensively using the radio frequency identification technology, the automatic positioning technology and the wireless communication network technology to realize mobile motor vehicle interlocking positioning in China, and automatic production of coking plants under severe production environments is achieved in a breakthrough manner.

The invention discloses a manufacturing method of a large-scale and high-intensity rivet connection pair. The manufacturing method comprises the followings steps: carrying out temperature heading to a rivet material to form a rivet blank with a rivet head and a rod body; carrying out quenching and tempering heat treatments to the rivet blank in sequence; then processing the rivet blank through finish turning and grinding, so as to form a locking slot pitch diameter region and a pulling slot pitch diameter region on the rod body; carrying out cold rolling to the pitch diameter regions, so as to form a plurality of locking slots not communicated with a ring slot, and a plurality of pulling slots not communicated with the ring slot; finishing a guiding slot; finishing a breakage slot and preparing a rivet; carrying out temperature heading to a rivet sleeve material so as to form a rivet sleeve blank with a hollow revolving body; carrying out normal fire heat treatment to the rivet sleeve blank; finishing the rivet sleeve blank to be a standard rivet sleeve or a flange rivet sleeve; pressing to make a flange so as to make a rivet sleeve. The diameter of the rivet provided by the invention ranges from 30mm to 64mm, the inner diameter of the rivet sleeve is larger than the outer diameter of a rivet locking slot by 0.5mm to 2mm, and the rivet is particularly suitable for large-scale heavy-duty mechanical shock resistance and looseness prevention. The manufacturing method provided by the invention has the advantages that the process is simple, the cost is relatively low, the bearing capability is relatively strong, and shock resistance and looseness prevention are safer and more reliable than that of bolted connection.

The invention discloses a building method of a molecularly imprinted fluorescent probe, wherein the material is Mn:ZnS quantum dot-molecularly imprinted polymer composite microsphere, which is formed by Mn:ZnS quantum dot, a styrene-polyacrylic acid copolymer and template molecule thiabendazole in a copolymerization manner under the ultrasonic action, so as to form a sensing probe with specific recognition after the template molecule thiabendazole is removed. The building method has the advantages that the molecularly imprinted fluorescent probe is designed and built by the Mn:ZnS quantum dot as a fluorescent sensor unit by using a molecular imprinting technique on the basis of the fluorescence resonance energy transfer mechanism; the Mn:ZnS quantum dot and the benzimidazole are subjected to fluorescence resonance energy transfer when the template molecule thiabendazole enters a hole of the Mn:ZnS quantum dot-molecularly imprinted polymer composite microsphere, thus resulting in quenching of emitted orange fluorescent light. Therefore, benzimidazole in the water can be specifically identified by an output change of a fluorescent signal.

The invention discloses preparation of fluorogold nano-clusters and application of the fluorogold nano-clusters to tetracycline and copper fluorescent probes. The fluorogold nano-clusters (Au NCs) aresynthesized with a one-step method from casein separated from milk and carbon quantum dots as a stabilizer and a reducer for synthesis of the Au NCs. The Au NCs perform emission three times at 433 nm, 702 nm and 1052 nm under the excitation wavelength of 350 nm, tetracycline has a linear quenching effect at 702 nm, Cu<2+> is added to an Au NCs system after quenching, fluorescence recovers, and fluorescence intensity at 1052 nm is almost not affected in the overall process; tetracycline is added to the Au NCs, observation is carried out under a UV (ultraviolet) lamp with wavelength of 365 nm,red fluorescence of the Au NCs changes into yellow fluorescence, and after addition of Cu<2+>, the yellow fluorescence disappears gradually and the red fluorescence recovers gradually. Therefore, a near-infrared ratio fluorescence switch for tetracycline and Cu<2+> and UV visual dual-signal detection are established. The method has the advantages of adopting a fluorescence spectrum in a near infrared region and being small in interference, high in specificity and detection sensitivity, convenient to operate and capable of detecting tetracycline and Cu<2+> simultaneously.

The invention discloses a special-steel-material flexible wheel of a harmonic reducer, and a cyclic heat treatment method thereof. The cyclic heat treatment method comprises the three steps of carrying out normalizing heat treatment, rough machining and thermal refining; the isothermal annealing operation is cancelled; the normalizing heat treatment comprises the following concrete steps of feeding a forged flexible wheel workblank into a heating furnace, adjusting the normalizing induction heating temperature to range from 880 DEG C+/-20 DEG C, heating and insulating for 45min, and continuously carrying out normalizing heat treatment for two times; and the thermal refining comprises the following concrete steps of feeding a roughly machined flexible wheel workblank into the heating furnace, adjusting the quenching induction heating temperature to range from 850 DEG C+/-20 DEG C, insulating for 45min, then oil quenching, adjusting the tempering induction heating temperature to range from 560 DEG C+/-20 DEG C, insulating for 90min, and carrying out thermal refining for 1 to 3 times according to the flexible wheel grain size number requirement. The special-steel-material flexible wheel of the harmonic reducer, and the cyclic heat treatment method thereof provided by the invention have the beneficial effects that after the cyclic heat treatment method provided by the invention isadopted to treat the flexible wheel made of the special steel material (medium-carbon high-strength quenched and tempered steel), the original austenite grains of the flexible wheel can be refined andhomogenized.

The invention relates to the technical field of biosensor, in particular to a fluorescence biosensor based on amplification of a hybridization chain reaction. The problems that the specificity and sensitivity of the method for detecting the kanamycin is low, and the cost is high in the above prior art are solved. According to the fluorescence biosensor based on the amplification of the hybridization chain reaction, the cyclic amplification effect is achieved through the hybridization chain reaction between the endonuclease IV and the chain. The mixture is reacted homogeneously by fluorescenceresonance energy transfer of the fluorophores and the quenching group. The preparation method comprises the following steps of: preparing gold nanoparticles; modifying Walker and Track to the surfaceof gold nanoparticles; mixing the labeled gold nano solution with the homogeneous reaction solution; performing hybridization chain reaction, and detecting the fluorescence; using the specific recognition of the nucleic acid Aptamer, using the nucleic acid Aptamer for high specific detection of the target kanamycin; and using the amplification of the hybridization chain reaction to achieve signalamplification.

The invention discloses a low-cost high-strength steel plate for engineering machinery, and a production method thereof. The steel plate comprises, by mass, 0.16-0.18% of C, 0.3-0.4% of Si, 1.0-1.4% of Mn, 0.016% or less of P, 0.009% or less of S, 0.4-0.7% of Ni, 0.3-0.5% of Cr, 0.01-0.03% of Nb, 0.02-0.06% of Al, 0.30-0.40% of Mo, 0.010-0.030% of Ti, 0.0016-0.0030% of B, and the balance of Fe and inevitable impurities. The components of the steel plate produced through the method are reasonably designed, and a proper amount of boron element is added to reduce the use amount of alloy elements, so the production cost is low; a two-stage controlled rolling technology is adopted to solve coarse and uneven crystal grains due to common hot rolling, so the produced steel plate has excellent comprehensive mechanical performances and uniform rolled structure, and provides a uniform original structure for subsequent heat treatment; an offline quenching heat treatment technology is adopted to make the steel plate have a martensite structure, so the strength grade of the steel plate is improved, and the plate shape of the steel plate is good; and a tempering heat treatment technology is adopted to eliminate the internal stress of the steel plate, so the low temperature toughness of the steel plate is improved, and the structure of the steel plate is uniform.

A method of manufacturing a hollow stabilizer includes a forming step of subjecting an element pipe to a bending process, to form a product shape including bent portions, and a quenching step of quenching the element pipe subjected to the bending process. In the quenching step, a cooling process is performed by immersing the element pipe made of steel in coolant and by spraying the coolant to an outer surface of the bent portion.

The invention discloses a pair of rolling-cut type bilateral scissors and a manufacturing method thereof. The pair of rolling-cut type bilateral scissors comprises ingredients in percentage by weight as follows: 0.40%-0.65% of C, 0.15%-0.35% of Si, 0.60%-0.80% of Mn, 3.50%-6.00% of Ni, 2.5%-4.00% of Cr, 1.50%-2.50% of Mo, 2.00%-3.50% of V, smaller than or equal to 0.02% of S, smaller than or equal to 0.025% of P, larger than or equal to 4% of Cr and Mo and the balance of Fe and unavoidable impurities. The manufacturing method of the rolling-cut type bilateral scissors comprises steps as follows: smelting, ingot casting, forging, annealing, rough machining, pretreatment process (normalizing and high-temperature tempering), semifinishing, final heat treatment (quenching and tempering) and finish machining. The rolling-cut type bilateral scissors can meet the production demand of high-strength medium plates of HG980, HG108, X80 and the like, and the shearing quality and shearing tonnage of the bilateral scissors are improved.

The invention relates to the technical field of anti-deformation clamping devices, in particular to a quenching anti-deformation clamping device for a series connection type brake disc. The quenching anti-deformation clamping device comprises a motor supporting plate. A drive device is arranged at the middle portion of the upper end of the motor supporting plate. Two symmetric stand columns are connected to the two sides of the upper end of the motor supporting plate. Each compression spring is located below a corresponding pressing plate. A brake disc workpiece is placed between every two pressing plates. An oil cylinder support is arranged at the middle portion of the upper end of a top plate and provided with an oil cylinder. A flying ring is arranged at the upper end of the oil cylinder. The lower end of the oil cylinder is connected with a sliding plate. A hydraulic station is connected to one side of the upper end of the oil cylinder through an oil pipe. According to the quenching anti-deformation clamping device, a series connection type clamping manner is adopted, the occupied area is small, the structure is compact, workpiece clamping is convenient, efficiency is high, and time consumption is little; and the production efficiency is high, multiple workpieces can be quenched at the same time through one-time clamping, the work efficiency is greatly improved, meanwhile, workpiece deformation is prevented, and the quenching anti-deformation clamping device is very practical.

The invention discloses a self-peelable protective coating for a cogging and forging process of pure titanium or titanium alloy. The self-peelable protective coating comprises the following components in parts by weight: 25-35 parts of glass A, 60-80 parts of glass B, 20-100 parts of a filler, 80-100 parts of a medium and a 40-80 parts of a binder; and a production process sequentially comprises the following steps: (1) burdening and mixing the glass A and the glass B and then melting to form a molten matter; (2) performing water quenching and granulation on the molten matter in the first step to obtain a granulated matter with the particle size of 1-5 meshes; (3) crushing the granulated matter after granulation treatment in the second step to obtain a crushed matter of 150 meshes; (4) adding kaolin and titanium dioxide into the crushed matter and mixing to obtain a mixture; and (5) adding the binder into the mixture and then stirring for 30min to obtain the self-peelable protective coating. The self-peelable protective coating improves the productivity. More importantly, the self-peelable protective coating reduces the pollution caused by titanium scrap and is conductive to recycling.

The invention discloses a machining method for bearing steel balls. The machining method includes the steps that firstly, ball blanks are machined, wherein to-be-machined wire materials are subjected to upsetting so as to form the ball blanks; secondly, grinding is performed, wherein after the ball blanks are sequentially subjected to buffing and soft grinding, primary prepared bodies are made; thirdly, quenching and tempering are performed, wherein the primary prepared bodies are discharged out of a furnace after being sequentially subjected to quenching, primary tempering and secondary tempering; fourthly, surface pressurization is performed, wherein the primary prepared bodies discharged out of the furnace are impacted or squeezed to make ball bodies; and fifthly, forming is performed, wherein the ball bodies are ground to make the bearing steel balls. According to the machining method, the to-be-machined wire materials form the ball blanks after being subjected to upsetting, then the ball blanks are firstly ground and then are subjected to quenching, tempering is performed two times in the tempering process, next, the surfaces of the ball blanks are pressurized, grinding and forming are performed, and therefore the internal stress of the bearing steel balls made through two-time tempering and surface pressurizing is effectively released, and the possibility that the shape and the size of the bearing steel balls are changed after the bearing steel balls are used or placed for a long time is greatly reduced.

The invention relates to a water drainage system with the angle and space of nozzles capable of being adjusted. The water drainage system comprises a plurality of spraying pipes, a spraying pipe sliding rack, spraying pipe transverse limiting racks, spraying pipe angle adjusting racks and water segregators. The multiple spraying pipes are arranged on the spraying pipe sliding rack side by side and are positioned through the spraying pipe transverse limiting racks. Each spraying pipe is provided with the multiple nozzles in the longitudinal direction. The liquid inlet end of each spraying pipe is connected with the corresponding water segregator through a hose, and each water segregator is connected with an external high-pressure quenching liquid conveying pipeline. The closed ends of the spraying pipes are fixedly connected with the spraying pipe angle adjusting racks and make the spraying pipes rotate around the axes of the corresponding spraying pipes under the driving action of the spraying pipe angle adjusting racks. The water drainage system is used for obtaining reliable experimental data of the structure condition of steel plates of different materials and thicknesses after quenching under the quenching experiment condition of the angle and space of different sorts of spraying liquid; and it is of great significance to providing an effective reference base for intensively studying the quenched structure phase change law and mechanism, formulating quenching technological parameters for industrial batch production and improving product quality.

The invention discloses a segmented heating and cooling quenching process for a wheel body of a thrust wheel. The process comprises the following steps of 1, placing and positioning the thrust wheel, wherein the thrust wheel is grabbed through a mechanical arm and placed on a support platform in a quenching device; 2, sequentially conducting intermediate frequency, high frequency and intermediate frequency induction heating on the thrust wheel through induction coil bodies; 3, cooling the thrust wheel obtained after induction heating, wherein spray cooling implemented through water, saline water and oil is sequentially conducted on the thrust wheel obtained after induction heating. According to the thrust wheel quenching process, the water-saline water-quenching oil cooling process is adopted, so that the problems that in the prior art, the quenching speed of a thrust wheel is low, the thrust wheel is deformed and cracked, and the thrust wheel is inconsistent in hardness after being quenched; the quenching process has the advantages of being uniform in thrust wheel hardness and high in quenching efficiency.

The invention relates to a heat treatment method of an aluminum alloy for an automotive body. The heat treatment method comprises the following steps of: carrying out homogenizing annealing heat treatment, and then carrying out hot rolling, intermediate annealing and cold rolling machining to form sheet metal; carrying out solution treatment on the aluminum alloy sheet metal at 500-600 DEG C, carrying out rapid quenching till temperature is lower than 110 DEG C, and then carrying out pre-ageing treatment within 20 minutes, wherein according to the pre-ageing treatment process, pre-ageing is carried out for 3-10s at 150-200 DEG C, or pre-ageing is carried out for 0.3-10 hours at 50-90 DEG C. The heat treatment method comprises the following steps of: carrying out homogenizing annealing heat treatment, and then carrying out hot rolling, intermediate annealing and cold rolling machining to form sheet metal; carrying out solution treatment on the aluminum alloy sheet metal at 540-565 DEG C, carrying out rapid quenching till temperature is lower than 100 DEG C, and then carrying out pre-ageing treatment within 30 minutes, wherein according to the pre-ageing treatment process, pre-ageing is carried out for 1-10s at 180-220 DEG C, or pre-ageing is carried out for 0.2-12 hours at 60-100 DEG C. After the aluminum alloy is subjected to the pre-ageing treatment, the property of the aluminum alloy is stable in a room temperature placement process, and before baking finish, the aluminum alloy has good forming property.

The invention relates to the technical field of bearing ring production, and discloses a quench cleaning device for a bearing ring assembly. The quench cleaning device comprises an oil groove, whereina feed hopper is fixedly connected with the left side surface of the inner part of the oil groove. A placing block is fixedly connected with the bottom of the front surface of the oil groove, a firstmotor is fixedly connected with the upper surface of the placing block, and an output shaft of the first motor is fixedly connected with the middle part of a first gear. A forged bearing ring is sleeved with a sleeve rod through the arrangement of a rotating rod, the sleeve rod, a protection plate and the feed hopper, the contact area between a bearing ring and quenching oil is enlarged, and thequenching efficiency is improved. By arranging a first connecting rod, a second connecting rod, a conveying belt and a baffle plate, the bearing ring after quenching is conveyed into a cleaning box. By arranging a water storage tank, a water pump, a cleaning pipeline and a spray head, the bearing ring in the inner part of a cleaning tank is cleaned, so that the cleaning is more thorough and the use is more convenient.

The invention discloses an online quenching oil filtering device for a thermal treatment furnace. The online quenching oil filtering device comprises a quenching oil groove, wherein the quenching oil groove is provided with an oil outlet and an oil return opening, and a first filter, an oil pump, a centrifugal machine, an oil storage groove and a second filter are sequentially connected between the oil outlet and the oil return opening through a pipeline. The online quenching oil filtering device can filter oil sludge and suspended particles in the quenching oil online in real time, so that the cooling performance of the quenching oil is guaranteed, the consumption of the quenching oil is reduced, and the thermal treatment effect of a product is improved.

The invention relates to a heat processing technology method of an austenitic ductile iron wear-resistant casting. The austenitic ductile iron wear-resistant casting is subjected to quenching processing, and the quenching processing comprises the following steps: the casting which is subjected to machining is heated to 850 DEG C-920 DEG C inside a bogie-hearth resistance furnace; thermal insulation is carried out for 1-1.5 hours; the casting is rapidly quenched into a water-soluble quenching liquid of which the temperature is 40-60 DEG C for 2-3 minutes; after quenching, the surface temperature of the austenitic ductile iron wear-resistant casting is controlled between 200 DEG C and 260 DEG C; the casting is taken out and is immediately sent into a tempering furnace for isothermal tempering processing to obtain the austenitic ductile iron wear-resistant casting, wherein the isothermal tempering temperature is controlled between 240 DEG C and 300 DEG C, and the isothermal tempering time is 2-3 hours. According to the heat processing technology method of the austenitic ductile iron wear-resistant casting, the cooling speed is high at a high-temperature phase over 400 DEG C; the cooling speed is low at a low-temperature phase below 400 DEG C; the performance of the wear-resistant casting is improved; the production cost is reduced; and the pollution to an atmospheric environment is avoided.

The invention relates to the technical field of the production of heavy machinery, and particularly relates to a steel plate type circular thin-walled quenching roll. The steel plate type circular thin-walled quenching roller comprises a roller body with a thin-walled hollow structure, and also comprises an end plate, a supporting plate and a rotating shaft, wherein the inner wall of the roller body is provided with lug bosses which are uniformly distributed along the circumferential direction, the end plate is spot soldered on two side ports of the roller body, the end plate is in interference fit with the inner wall of the roller body, the supporting plate is arranged on the lug bosses of the inner wall of the roller body, the supporting plate is also in interference fit with the inner wall of the roller body, and the end plate and the supporting plate are also soldered on the rotating shaft. The steel plate type circular thin-walled quenching roller is reasonable in structure and has relatively light weight. Soldering spots which are produced by spot soldering the end plate on two side ports of the roller body can be removed after the quenching, and thus the outer attractive appearance of the roller body can be ensured; and with the design of the lug bosses, the structure is novel, the supporting plate can be well supported, the supporting plate cannot move in a longitudinal direction after the roller body is quenched, and the roller body after being quenched cannot produce deformation.