30results about How to "Accelerated quenching" patented technology

The invention relates to an ohmic heating method and an ohmic heating device. Through the ohmic heating method and the ohmic heating device, the quenching or annealing of the back surface and tooth surface of a workpiece can be carried out in a roughly continuous operation period, and the high-precise quenching or annealing quality is easily obtained on the back surface or tooth surface while striving to improve the efficiencies of quenching or annealing. The ohmic heating method is characterized by comprising the following steps that a switching device is switched to a back surface side, so that one pair of first touch points contact the two ends of the heating range in the length direction of the back surface of the workpiece supported by a support device, the regulated frequency and output current for the back surface are supplied to the touch points from a power supply device, and then ohmic heating is carried out on the back surface; and after the step, the switching device is switched to a tooth surface side, so that one pair of second touch points contact the two ends of the heating range in the length direction of the tooth surface of the workpiece, the regulated frequency and output current for the tooth surface are supplied to the touch points from the power supply device, and then the ohmic heating is carried out on the tooth surface.

The invention relates to the technical field of heat treatment of metals, and especially relates to a horizontal quenching furnace; the horizontal quenching furnace has the advantages that the heating is more uniform, the operating efficiency is higher, the temperature can be conveniently adjusted, and the temperature control accuracy is high, so that the usage reliability is increased; the horizontal quenching furnace comprises a furnace body, an electric heating plate and a thermometer, a furnace chamber is arranged in the furnace body, an access opening is arranged at a left end of the furnace chamber, the access opening is communicated with the furnace chamber, and a door plate is arranged at the access opening; the horizontal quenching furnace also comprises a servo motor, a base plate, a left bracing frame, a right bracing frame, a left front threaded rod, a left rear threaded rod, a right front threaded rod, a right rear threaded rod, a left front screwed pipe, a left rear screwed pipe, a right front screwed pipe, and a right rear screwed pipe, and the gears are respectively arranged at an inner side at top and bottom of the left bracing frame as well as the inner side of the top and the bottom of the right bracing frame, a conveyor belt is arranged outside the gears, the conveyor belt passes through the outside part of the gears and is contacted with the gears; and the horizontal quenching furnace also comprises a intelligent display, two sets of thyristors, and electric connection wires.

The invention discloses a method for molding an automobile transmission gearbox gear stand through powder metallurgy. The method comprises the steps of raw material mixing, pressing, drying, sintering, quenching, tempering, finishing, rust prevention and the like. Raw materials comprise, by weight part, 100-120 parts of iron powder, 1.0-2.0 parts of graphene, 1.0-2.0 parts of nickel powder, 1.0-2.0 parts of manganese powder, 0.5-0.6 part of a lubricating agent, 0.1-0.2 part of a silane coupling agent, 3-4 parts of copper powder, 0.5-1.0 part of chromium powder, 1.0-1.5 parts of zinc powder, 0.1-0.15 part of silicon dioxide, 1-2 parts of tungsten carbide and 0.5-1.0 part of titanium powder. According to the method, the raw material formula is reasonable, the process is simple, and the production efficiency is high. The automobile transmission gearbox gear stand prepared through the method has the beneficial effects of uniform in overall density, good in strength and hardness, good in rust prevention performance and the like.

The invention provides a measurement method for concentration of bisphenol S, and relates to the technical field of chemical analysis and detection. The measurement method comprises the following steps of S1, preparing a blank solution through a sulfuric acid solution, a Fenton reagent and a fluorescent probe solution; S2, preparing multiple standard working solutions through the sulfuric acid solution, the Fenton reagent, the fluorescent probe solution and bisphenol S standard solutions in different concentrations; S3, respectively measuring optical indexes of the blank solution and multiplestandard working solutions, and building a standard curve according to the optical indexes and the concentration of the bisphenol S in the multiple standard working solutions; and S4, measuring an optical index of a to-be-measured sample, and obtaining the concentration of the bisphenol S in a to-be-measured sample according to the optical indexes of the to-be-measured sample and the standard curve. With the measurement method for the concentration of the bisphenol S, provided by the invention, the concentration of the bisphenol S can be rapidly and sensitively measured according to the structure characteristic of sulfuryl contained in the bisphenol and the oxidization characteristics of the Fenton reagent.

The present invention concerns a method of detection of an analyte in which a protein capable of binding the analyte and comprising a fluorescent energy label and an energy acceptor moiety capable of accepting energy emitted by the label or protein by Forster energy transfer (FRET), is exposed to incident electromagnetic energy to excite the protein or label, and the fluorescent emission of the label is measured; characterised in that the protein is encapsulated in a biocompatible, optically transparent matrix which is permeable to the analyte, and in that the protein undergoes no substantial conformational change during the method; further characterised in that the energy acceptor moiety has a more active and less active state, which is determined by the presence of analyte, and the emission from the label is indicative of the presence of analyte. A biocompatible optically transparent matrix in which a protein capable of binding an analyte is also provided.

The invention relates to the technical field of semiconductor photoelectrons, in particular to a negative feedback type single photon avalanche photodiode and a manufacturing method thereof. The negative feedback type single photon avalanche photodiode comprises a substrate, a buffer layer, an absorption layer, a gradient layer, a charge layer and a cap layer, wherein an incident light window andN electrodes are arranged below the substrate, and the N electrodes are symmetrically distributed around the incident light window; the buffer layer, the absorption layer, the gradient layer, the charge layer and the cap layer are sequentially arranged above the substrate; a P-type doped region with a stepped structure is arranged on the cap layer, and a P electrode grows on the P-type doped region; a dielectric film is arranged on the upper surface of the cap layer, a negative feedback resistor of a semi-closed convolution annular structure is arranged in the middle of the dielectric film, abonding pad is arranged on the dielectric film, one end of the negative feedback resistor is connected with the P electrode, and the other end is connected with the bonding pad. Rapid quenching and rapid recovery of single photon avalanche photodiode SPAD Geiger avalanche can be realized so that the photon detection rate of the SPAD can be enhanced, the post-pulse effect can be reduced and the photon detection function of unpredictable arrival time can be realized.

The invention discloses a basket type automatic quenching treatment system. The basket type automatic quenching treatment system comprises a quenching furnace, a quenching slot, a plurality of baskets, a post-treatment assembly and a basket transfer assembly, wherein the quenching slot is in butt joint to a discharge hole of the quenching furnace; the post-treatment assembly is arranged at one side, away from the quenching furnace, of the quenching slot; the basket transfer assembly is arranged on a position, on the top of the post-treatment assembly, in the quenching slot; the baskets are driven by the basket transfer assembly; and the baskets in the quenching slot are in butt joint to the discharge hole of the quenching furnace to receive materials. The basket type automatic quenching treatment system disclosed by the invention can effectively avoid dropping and mixing phenomena, and is high in quenching and post-treatment efficiency.

The invention discloses a building external wall with the good anti-electromagnetic radiation performance. An electromagnetic shielding material is pasted on the outer surface of the building external wall. The electromagnetic shielding material is of a sandwich structure, and specifically formed by sandwiching a layer of foamed aluminum-copper-nickel alloy between two layers of permalloy plates. The electromagnetic shielding material has good shielding effects on low-frequency-band and high-frequency-band electromagnetic waves, avoids indoor electromagnetic information leakage and reduces interference of outside electromagnetic waves on the indoor environment. Further, the surfaces of the permalloy plates of the material are subjected to hydrochloric acid treatment to form nanosheet super-hydrophobic structures, so that the self-cleaning, anti-foggy, anti-frozen and anti-corrosive protective effects are achieved, and the service life of the building external wall can be prolonged.

The invention discloses a high voltage power distribution cabinet with good shielding performance. An electromagnetic shielding cover body is attached to the surface of the cabinet body of the high voltage power distribution cabinet. The cover body has a sandwich structure, and particularly, a layer of foam aluminum-copper-nickel alloy is clamped between two layers of permalloy plates. Electromagnetic waves in a low frequency band and a high frequency band can be well shielded, electromagnetic radiation of the high voltage power distribution cabinet can be prevented from polluting the environment, and interference of external electromagnetic waves on electrical equipment inside the power distribution cabinet can be reduced; and further, after the surface of the permalloy plate of the cover body is subjected to hydrochloric acid treatment, a nanoplate super hydrophobic structure is formed, self-cleaning, anti-fog, anti-freezing and anti-corrosion protection roles can be played, and the service life of the high voltage power distribution cabinet can be prolonged.

The invention discloses a high voltage switch cabinet with good shielding performance. An electromagnetic shielding cover body is attached to the surface of the cabinet body of the high voltage switch cabinet. The cover body has a sandwich structure, and particularly, a layer of foam aluminum-copper-nickel alloy is clamped between two layers of permalloy plates. Electromagnetic waves in a low frequency band and a high frequency band can be well shielded, electromagnetic radiation of the high voltage switch cabinet can be prevented from polluting the environment, and interference of external electromagnetic waves on electrical equipment inside the switch cabinet can be reduced; and further, after the surface of the permalloy plate of the cover body is subjected to hydrochloric acid treatment, a nanoplate super hydrophobic structure is formed, self-cleaning, anti-fog, anti-freezing and anti-corrosion protection roles can be played, and the service life of the high voltage switch cabinet can be prolonged.

A quench protection arrangement for a superconducting magnet is disclosed. The arrangement comprises: a superconducting magnet comprising a plurality of magnet sections; a plurality of varistors, wherein each of the plurality of varistors is electrically connected in parallel across a respective one of the plurality of magnet sections; and a heater arrangement electrically connected to the plurality of varistors and configured to apply heat to each of the plurality of magnet sections in response to a change in a voltage across any one or more of the plurality of varistors. A method of protecting a superconducting magnet is also disclosed.

The invention discloses an electric power conversion device resistant to electromagnetic interference. The electric power conversion device is covered with a cover for electromagnetic shielding, the cover adopts a sandwich structure, specifically, a layer of foamed aluminum-copper-nickel alloy is sandwiched between two layers of permalloy plates, electromagnetic waves at low and high bands can be well shielded, meanwhile, pollution caused by electromagnetic radiation of the electric power conversion device to the environment is prevented, and interference of external electromagnetic waves to the electric power conversion device is reduced; further, super-hydrophobic structures of nanosheets are formed on surfaces of the permalloy plates of the cover through hydrochloric acid treatment, self-cleaning, anti-fog, anti-freezing and corrosion-resistant protection roles are played, and the service life of the electric power conversion device can be prolonged.

The invention discloses an ecological building with good anti-electromagnetic radiation performance. An electromagnetic shielding material is pasted on the outer surface of the ecological building. The electromagnetic shielding material is of a sandwich structure, and specifically formed by sandwiching a layer of foamed aluminum-copper-nickel alloy between two layers of permalloy plates. The electromagnetic shielding material has good shielding effects on low-frequency-band and high-frequency-band electromagnetic waves, avoids indoor electromagnetic information leakage and reduces interference of outside electromagnetic waves on the indoor environment. Further, the surfaces of the permalloy plates of the material are subjected to hydrochloric acid treatment to form nanosheet super-hydrophobic structures, so that the self-cleaning, anti-foggy, anti-frozen and anti-corrosive protective effects are achieved, and the service life of the ecological building can be prolonged.

The invention discloses an electrical equipment inspection system with good anti-electromagnetic radiation performance.The electrical equipment inspection system is covered with an electromagnetic shielding cover body which is of a sandwich structure, and particularly, a layer of foamed aluminum-copper-nickel alloy is clamped between two permalloy plates; by means of the cover body, a good shielding effect on low-frequency section and high-frequency section electromagnetic waves can be achieved, pollution of electromagnetic radiation of the electrical equipment inspection system to the environment is prevented, and interference of external electromagnetic waves to the electrical equipment inspection system is reduced; furthermore, the surface of each permalloy plate of the cover body is treated with hydrochloric acid, nanosheet super-hydrophobic structures are formed, the self-cleaning, anti-fog, anti-freezing and anti-corrosion protection effects are achieved, and the service life of the electrical equipment inspection system can be prolonged.

The invention discloses an indented flame-retardance anti-explosion valve. The indented flame-retardance anti-explosion valve comprises a valve cover, a valve disc, a valve base, a conical spring, a sealing ring, flame retarding pieces, an inner flame retarding ring, an outer flame retarding ring and a bolt; the inner flame retarding ring and the outer flame retarding ring are mounted between thevalve cover and the valve base; more than one annular flame retarding pieces are mounted between the inner flame retarding ring and the outer flame retarding ring; multiple turbulent flow columns aremounted on the annular flame retarding pieces; the turbulent flow columns comprise windward surfaces and leesides; the windward surfaces of the turbulent flow columns are of indented structure, or theleesides of the turbulent flow columns are of indented structures, or the windward surfaces and the leesides of the turbulent flow columns are both of indented structures; the turbulent flow columnson the previous rows are positioned in the front centers of gaps between two adjacent turbulent flow columns on later rows; and the gaps between two adjacent turbulent flow columns on the later rows are smaller than the widths of the turbulent flow columns on the previous rows. The indented flame-retardance anti-explosion valve has the characteristics of compact structure, high heat transfer efficiency, high flame quenching speed, stable performances, modular design and convenience to maintain.

The present invention discloses an anti-electromagnetic interference variable frequency transformer control system. An electromagnetic shielding cover body covers the variable frequency transformer control system, the cover body is a sandwich structure, and the sandwich structure is that: a layer of foamed aluminum-copper-nickel alloy is arranged between two layers of permalloy plates, so that the cover body with the sandwich structure is able to shield low-frequency stage and high-frequency stage electromagnetic waves, prevent the environment from pollution caused by electromagnetic radiation of the variable frequency transformer control system and reduce the interference of external electromagnetic waves in the variable frequency transformer control system; and moreover, the surfaces of the permalloy plates of the cover body forms a nanosheet super-hydrophobic structure after being processed by hydrochloric acid, so that the self-cleaning, anti-fog, anti-icing and erosion-resisting protection effects are realized, and the service life of the variable frequency transformer control system is prolonged.