57results about How to "Improve annealing quality" patented technology

The invention discloses an annealing system for multi-strand superfine copper wires. The system comprises a wire payoff rack, a first capstan, a first drying oven, a water tank, a felt, a second capstan, a second drying oven, a cooling gas blowing kettle and a wire winding disc, wherein a gas outlet of the cooling gas blowing kettle is located on an outlet of the second drying oven. The invention also discloses an annealing method by the annealing system for multi-strand superfine copper wires. With the adoption of the method provided by the invention, the time, electricity and power can be saved and large output is obtained; and meanwhile, the produced superfine copper wires is strong in antioxidant capability and long in service life.

The invention relates to an ammonia storage tank with a gas ammonia valve and a method for ammonia supply by gas ammonia/liquid ammonia conversion. The ammonia storage tank is characterized in that a gas ammonia output valve is further installed on the top surface of a conventional ammonia storage tank. The method for ammonia supply by gas ammonia/liquid ammonia conversion, in which the ammonia storage tank with the gas ammonia valve is used, has the characteristic of switching along with the rise and drop of external temperature: when the external temperature is higher than 20 DEG C and the pressure in the ammonia storage tank is from 0.6 MPa to 0.8 MPa, the gas ammonia output valve is opened to supply gas ammonia to an evaporation tank; and when the external temperature is not higher than 20 DEG C and the pressure in the ammonia storage tank is from 0.4 MPa to 0.6 MPa, a liquid ammonia output valve is opened to supply liquid ammonia to the evaporation tank. The method can reduce the temperature and pressure in the ammonia storage tank, thus avoiding overpressure and ensuring safe production.

The invention provides a cable copper core continuous annealing production line. A pay-off mechanism, a tensioning mechanism, a continuous annealing mechanism, a drying mechanism and a take-up mechanism are fixedly arranged on the ground in sequence. A cable core is let out from the pay-off mechanism, tensioned through the tensioning mechanism, fed into the continuous annealing mechanism, dried through the drying mechanism and coiled by the take-up mechanism. The cable copper core continuous annealing production line provided by the invention is a single-line electrified continuous annealing device. The annealing device is generally mounted between a final cable tensioning wheel and a take-up reel on a cable tensioner to form a cable tensioning-annealing-take-up continuous production unit.The cable copper core continuous annealing production line improves labor conditions, improves the production efficiency, is uniform in heating and high in annealing quality, reduces heat taken awayby a furnace body, a bracket and the like during coiling and coiled cable annealing, greatly saves fuel or electric energy and reduces the production cost.

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 discloses an integral waveform piece automatic annealing device for a clutch and an application method. A feeding device, an annealing furnace device, a discharging device, a temperaturecontrol system and a center control module are included. Under unmanned intervention, the feeding device and the discharging device are reasonably arranged to finish the automatic feeding and discharging procedure, and the automatic annealing device integrates automatic feeding and discharging, waveform piece heat preservation and pressure maintaining, waveform piece key forming area monitoring functions. The heat preservation and pressure maintaining annealing procedure is provided, a waveform piece annealing sizing lower die, a waveform piece annealing sizing upper die and four waveform piece sizing high-temperature-resisting springs are in one group to sequentially form an annealing start feeding station, a pressure maintaining start station, a pressure maintaining annealing station,a pressure maintaining finish station and an annealing finish discharging station, all the stations are different in procedure and purpose, and the annealing procedure is finely divided. The annealingfurnace device is combined with the center control module, the temperature control system is controlled under processing of the center control module, the related machining heat preservation temperature value is provided, and fine treatment is conducted for waveform piece annealing.

The invention discloses an injection molding production line and injection molding process of an ABS watch shell, and belongs to the field of ABS injection molding. According to the technical scheme,the molding production line and injection molding process is characterized by comprising a drying oven, an injection molding machine and an annealing device. The injection molding process comprises the following steps that firstly, ABS plastic raw materials are put into the drying oven to be dried, meanwhile, the injection molding machine and an injection mold are pre-heated, then the raw materials are placed in a screw barrel of the injection molding machine, the injection molding machine is used for heating the raw materials to be in a molten state, the raw materials are injected into the injection mold to be formed into finished products, the injection mold is cooled, then opening the mold is conducted, an ejection mechanism ejects the finished products out of the male mold so as to make the finished products fall into a water slide way of the annealing device, and the finished products pass through the water slide way and slide to a hot water tank for annealing and are conveyed toa collecting box through a conveying belt. According to the injection molding process, the problems that the ABS watch shell is not convenient to anneal after being just subjected to injection moldingand annealing time is not good to control are solved, so that the effects that the ABS watch shell can be automatically annealed after being just subjected to the injection molding and the annealingtime can be accurately controlled when the ABS watch shell is transported through the conveying belt is achieved.

A multi-station vacuum annealing machine comprises a machine frame, a workbench, a plurality of vacuumizing chambers, vacuumizing mechanism, a heating mechanism and a driving mechanism, wherein the workbench is arranged on the machine frame, the multiple vacuumizing chambers are arranged on the workbench, the vacuumizing mechanisms are communicated with the vacuumizing chambers correspondingly, the heating mechanism is used for heating one or more vacuumizing chambers, and the driving mechanism is used for driving the vacuumizing chambers and the heating mechanism to move relatively. Each vacuumizing chamber comprises a base arranged on the workbench and an upper cover cap capable of being matched with the base in a sealed manner, and each base is communicated with the corresponding vacuumizing mechanism. The heating mechanism comprises a lifting module and an electromagnetic heating coil arranged at the lower end of the lifting module, and the electromagnetic heating coils are locatedright above the one or more vacuumizing chambers. According to the multi-station vacuum annealing machine, a workpiece can be independently heated and annealed, so that the workpiece to be annealed is uniformly heated, and the annealing quality is improved; and circulation and uninterrupted automatic operation of heating annealing, heat preservation, cooling and heating annealing can be conducted, the production is planned, manual intervention is not needed, the production efficiency is high, the energy consumption is low, and the environment friendliness is achieved.

A furnace inlet circulation frame for glass mold annealing comprises a frame body composed of a bottom frame piece, a left frame piece, a right frame piece and a rear frame piece; the circulation frame is characterized in that a frame body front opening is formed in the front side of the frame body, a frame body top opening is formed in the top of the frame body, a bottom frame piece round heat transmitting cavity and a bottom frame piece polygonal heat transmitting cavity are formed in the bottom frame piece, a pair of left frame piece limiting foot bolt closing holes are formed in the left end of the bottom frame piece, a pair of right frame piece limiting foot bolt closing holes are formed in the right end of the bottom frame piece, left frame piece round and triangular heat transmitting cavities are formed in the left frame piece, a pair of left frame piece limiting feet are arranged on the upper portion of the left frame piece, the upper portions of the left frame piece limiting feet stretch out of the upper plane of the left frame piece, a right frame piece round heat transmitting cavity and a right frame piece triangular heat transmitting cavity are formed in the right framepiece, a pair of right frame piece limiting feet are arranged on the side, facing the left frame piece, of the upper portion of the right frame piece, the upper portions of the right frame piece limiting feet stretch out of the upper plane of the right frame piece, and a rear frame piece triangular heat transmitting cavity is formed in the rear frame body. Annealing quality is improved, work efficiency is high, accidents caused by collapsing are avoided, and a shovel car can conveniently carry out shovel transportation operation.

The invention discloses a high-tenacity high-strength cast steel wear-resistant material and a preparation method thereof. The method comprises the technology steps of raw material preparation, raw material hot melting, TIN adding according to a ratio, cast steel annealing, cast steel quenching and tempering and cast steel quality detection, through a series of thermal treatment technologies of isothermal quenching, high-temperature tempering and the like, the high-tenacity high-strength cast steel wear-resistant material has good tensile performance, and is not prone to deform or break, and by adding an appropriate amount of TIN in a hot melting process, the elongation at break is higher than or equal to 12%; V shape impact energy is higher than or equal to 45 J, the rockwell hardness HRCis 40-45, cast steel has higher impact resistance, the wear resistance performance of the cast steel is 1.5 times the wear resistance performance of an NM450 wear-resistant plate, the cast steel hasthe good wear resistance performance, wear resistance degrees of the cast steel are even, by conducting annealing in an annealing furnace at 900+/-3 DEG C in cooperation with a fan and blades, the produced cast steel is even in wear resistance, and the problems that cast steel is poor in weldability, high in welding stress and prone to break, and has many welding defects due to the fact that various portions are made from different materials are solved.

The invention discloses a copper wire drawing process. The process comprises alkaline electrolysis, cleaning, oxygen content measuring, wire drawing, annealing, winding and inspection. A copper rod issubjected to electrolysis in an alkaline solution containing sodium hydroxide and sodium tartrate, and a copper oxidation film is removed; after reaching the schedule time, cleaning is carried out, after drying, a pulse melting infrared absorption method is used for measuring the oxygen content of a copper rod with an oxidation film removed, when the oxygen content is lower than 6000 PPM, the copper rod can be used, a large wire drawing machine, a medium wire drawing machine and a micro wire drawing machine are adopted in wire drawing, the large wire drawing machine and the medium wire drawing machine carry out wire drawing, then, annealing treatment is carried out, and after micro wire drawing, the winding machine is adopted for winding, conductive, aging stability, and thermal stabilitytests are carried out. The oxide layer is removed, alkaline electrolysis is adopted, pollution and poisonousness of chemical removal strong acid and strong base can be avoided, the pulse melting infrared absorption method is adopted for detecting the oxygen content, after wire drawing, copper thorn or fragments can be avoided, the wire yield is improved, the cost is reduced, the annealing qualityis high, and electric energy is saved.

The invention discloses a heat treatment process for a knuckle bearing. The heat treatment process is characterized by comprising the following steps that (1) material selection of a part is conducted, and W18Cr4V is selected; (3) preheating treatment is conducted; (4) quenching treatment is conducted, and (5) tempering treatment is conducted. According to the heat treatment process for the knuckle bearing, preheating is conducted at first, so that large heat stress is avoided, and about 30% of residual austenite which is not converted into martensite is still reserved in the internal structure after quenching; and the process parameters of all stages are strictly controlled, procedures are remarkably reduced, the process is simple, operation is convenient, and energy consumption is low.

The invention relates to a special-shaped copper alloy strip and a production method thereof. The special-shaped copper alloy strip contains, by weight, 0.075%-0.14% of iron, and 0.025%-0.04% of phosphorus, has higher hardness and conductivity, and can meet the ever-increasing requirement of the performance of the lead wire frame. The production method for the special-shaped copper alloy strip is also disclosed, the production method includes the following steps of preparation of a mother belt, high speed forging, continuous annealing, surface washing and lapping, surface oil washing, roller type rolling, on-line detection and interleaving paper coiling, specifically, after the mother belt is forged at high speed and is preliminarily formed, and continuous annealing is used for fully releasing the internal stress of the forged strip material, accordingly the annealing quality is improved, and cracks generated at the thick-thin junction of the strip material are prevented; the strip is ground and polished while surface washing is conducted, accordingly the flatness of the belt surface is greatly improved, and the strip surface can evenly make contact with roiling oil when the surface is washed with oil, and accordingly the antioxidant treatment effect is guaranteed and the machining quality of the copper alloy strip is improved.

A fast annealing method for a thin-wall corrugated pipe comprises the steps of putting the thin-wall corrugated pipe into an annealing bin, performing electrifying and heating, performing protection through protective gas, performing outage cooling and performing taking-out. By the adoption of the annealing method, the heating and annealing can be completed fast, the speed of the annealing operation can be matched with the speed of the following machining processes, meanwhile the copper thin-wall corrugated pipe can be subjected to good annealing treatment, and the annealed thin-wall corrugated pipe not only has the enough strength, but also has certain flexibility; the annealing bin is open in work, the annealing treatment speed is high, taking and putting are convenient, the product to be treated is conveyed into the annealing bin from one end, and meanwhile the product obtained after the annealing treatment is completed can be taken out from the other end, so that the annealing operation can be performed in a streamlined manner, and the speed of the annealing operation is further increased; and the introducing time of the protective gas is shortened, the consumption of the gas is lowered, besides, the thin-wall corrugated pipe can be taken out from the annealing bin faster, the annealing operation speed is further increased, inert gas can be adopted as the protective gas, nitrogen can be adopted as the protective gas as well, and the cost of the annealing operation is lowered greatly.

The invention discloses a spheroidizing annealing device for high-tenacity fastener wire rods. The spheroidizing annealing device comprises an annealing furnace, an annealing furnace upper cover, a furnace cover lifting device, an in-furnace heater, a gantry lifting device and an annealing furnace movable inner container, wherein the annealing furnace is a tank body with an upward opening, the annealing furnace upper cover capable of being matched with the annealing furnace upper cover is arranged at the opening in the upper end of the annealing furnace, the annealing furnace upper cover is detachably connected with the annealing furnace, the furnace cover lifting device capable of being matched with the annealing furnace upper cover is arranged on the annealing furnace upper cover, and the lower end of the furnace cover lifting device is fixedly connected with the side edge of the annealing furnace. The annealing furnace movable inner container capable of moving up and down and the gantry lifting device capable of being matched with the annealing furnace movable inner container are arranged in the annealing furnace, the annealing furnace movable inner container is driven by the gantry lifting device to ascend and descend up and down, discharging and taking in the annealing furnace can be facilitated, the annealing efficiency is improved, the annealing quality is improved, thelabor intensity of workers is reduced, and the safety is improved.