38results about How to "Stable atmosphere" patented technology

A processing apparatus includes a sealed vacuum chamber which contains a processing portion; a pressure controlling system which keeps the internal pressure of the sealed vacuum chamber constant at a predetermined level by exhausting the ambient gas in the sealed vacuum chamber; and an ambient gas recirculating system which recirculates the ambient gas exhausted from the sealed vacuum chamber back into the sealed vacuum chamber; wherein the ambient as recirculated by the ambient gas recirculating system is blown into the sealed vacuum chamber so that a gas flow is generated in a predetermined direction along the processing portion.

The invention discloses an automatic production line for saw blade heat treatment, and belongs to the technical field of work piece heat treatment. The automatic production line for the saw blade heat treatment is characterized by comprising a feed mechanism, a feeding tray stepping advancing mechanism, a heat preserving furnace, a carbon-nitrogen furnace, a quenching mechanism, a cleaning machine, a tempering furnace and feeding tray conveying mechanisms, wherein the feed mechanism, the feeding tray stepping advancing mechanism, the heat preserving furnace, the carbon-nitrogen furnace, the quenching mechanism, the cleaning machine, the tempering furnace are sequentially arranged according to a manufacturing process order, and the feeding tray conveying mechanisms are arranged between each two adjacent devices. The feeding tray conveying mechanisms comprise a transition cylinder, a carbon-nitrogen furnace discharging advancing device, a quenching discharging advancing device, a tempering furnace feeding advancing device and a tempering furnace discharging advancing device, wherein the transition cylinder is arranged between the heat preserving furnace and the carbon-nitrogen furnace, the carbon-nitrogen furnace discharging advancing device is arranged on one side of the carbon-nitrogen furnace, the quenching discharging advancing device is arranged between the quenching mechanism and the cleaning machine, the tempering furnace feeding advancing device is arranged between the cleaning machine and the tempering furnace, and the tempering furnace discharging advancing device is arranged at an outlet of the tempering furnace. The automatic production line for the saw blade heat treatment has the advantages of improving production efficiency and energy use rates of the devices, ensuring heat treatment quality of saw blades due to continuous production, achieving automation operation of the whole production line and being small in number of employed workers and good in labor environment.

The invention discloses a production process of winebottles with decorations and can effectively reduce the occurrence probability of black spots on the surfaces of glass winebottles. The production process of winebottles with decorations comprises: a. applying appliques on the external surfaces of the glass winebottles; b. placing the multiple glass winebottles with appliques into the inner cavity of a decoration firing furnace for baking, so that a coloured glaze can be welded on the external surfaces of the glass winebottles. Specifically, step b consists of the steps of: while putting the multiple glass winebottles in the decoration firing furnace, keeping the volume sum of coloured glazes of appliques on the multiple glass winebottles at an amount of V1 and the inner cavity volume of the decoration firing furnace at an amount of V2, with the ratio of V1 to V2 less than or equal to 0.01 per thousand, and controlling an equal space between any two glass winebottles; heating the glass winebottles to a temperature of 580DEG C-590DEG C in the decoration firing furnace by means of preheating and temperature raising, and making the coloured glazes firmly welded on the external surfaces of the glass winebottles through an insulation process; cooling the glass winebottles. The process provided in the invention can effectively prevent formation of black spots on the surfaces of glass winebottles.

The invention discloses a titanium-alloy supporting ring fusion-welding gas shield trailing cover and a shielding method. A trailing cover main body of a shield trailing cover is of a box structure and provided with an opening in the front face and an opening in the bottom face; a welding gun nozzle mounting hole is formed in the front end of the top face of the trailing cover main body, and an upper pipe with argon is arranged on the top face of the trailing cover main body; an inclined side plate is connected to the lower end of the left side face of the trailing cover main body and is inclined toward the outer side of the trailing cover main body; a web is connected to the right side face of the trailing cover main body, and a side pipe with argon is connected to the side face of the web; and the lower end of the inclined side plate and the lower end of the right side face of the inclined side plate are each of a circular arc structure which has the same curvature with the welding face of an outer circle of a supporting ring. The titanium-alloy supporting ring fusion-welding gas shield trailing cover can ensure that the heat affected area with the temperature of welding seam molten pool and parts exceeding 400 DEG C is not oxidized.

The invention relates to an exterior wall tile and a production method thereof, in particular to a production method of a sandstone-like porcelain exterior wall tile. The production method comprises the following steps: using architecturally applicable materials to press an adobe of the exterior wall tile; adding sandstone particles with a fineness of 20-150 meshes in a suspending agent to prepare a glaze slurry; spraying or coating the glaze slurry on the surface of the adobe; drying, preheating, sintering and cooling the adobe covered with the glaze slurry to obtain a finished product. According to the invention, the whole sandstone-like porcelain exterior wall tile is prepared by only needing one sintering process, thus fuel and energy of sintering one time are saved compared with the prior art, the energy consumption and exhaust discharge of products with same specification are greatly reduced; and the whole exterior wall tile has the decorative effect similar to that of simulation sandstone, thus compared with the prior art, the exterior wall tile disclosed herein has better decorative effect and lower production cost.

The invention relates to a waste gas protection system for a thermal treatment furnace and a control method. The system comprises a furnace body and a feeding table, an air displacement chamber is formed between the inlet of the furnace body and the feeding table, a No.1 door is arranged between the air displacement chamber and the feeding table, and a No.2 door is arranged between the air displacement chamber and the inlet of the furnace body; a fuel gas radiation pipe in the furnace body is connected with the input end of a fourth valve through an exhaust pipe, one path of the output end of the fourth valve is communicated with a burner waste gas exhaust pipe through a first valve, and the other path of the output end of the fourth valve is communicated with the cavity of the air displacement chamber through a second valve; and the burner waste gas exhaust pipe is communicated with the cavity of the air displacement chamber through a third valve, the system is provided with a blower, and the output port of the blower is arranged in the burner waste gas exhaust pipe. The system has the advantages that: a vacuum chamber is replaced by using the air displacement chamber, and the air in the air displacement chamber is displaced by using CO2 serving as a main component of the waste gas, so the air entering the furnace is reduced, and stability of furnace atmosphere is realized.

The invention relates to a method for material charging and slag discharging during the pyrolysis treatment of organic waste. Crushing treatment which is adopted in the prior art has high investment, high energy consumption and difficult maintenance. The method is realized through the mode of water sealing. The method comprises the following steps: during the material charging process, strip and blocky organic waste is sent into a material charging water tank, the organic waste goes down onto a conveying device on the bottom of the material charging water tank through the self gravity of the waste and is conveyed from an inlet of a charging passage to an outlet of the charging passage by the conveying device, and enters a feed port of a pyrolysis device; and during the slag discharging process, the strip and blocky slag produced by pyrolysis directly drops into a slag discharging water tank arranged below a slag discharging port through the slag discharging port. The method does not crush the material to be pyrolyzed, has a remarkable energy-saving effect, lower manufacturing cost of the device, and improves efficiency of the recycling synthesis treatment of the organic waste.

The invention relates to a method for material charging and slag discharging during the pyrolysis treatment of organic waste. Crushing treatment which is adopted in the prior art has high investment,high energy consumption and difficult maintenance. The method is realized through the mode of water sealing. The method comprises the following steps: during the material charging process, strip and blocky organic waste is sent into a material charging water tank, the organic waste goes down onto a conveying device on the bottom of the material charging water tank through the self gravity of the waste and is conveyed from an inlet of a charging passage to an outlet of the charging passage by the conveying device, and enters a feed port of a pyrolysis device; and during the slag discharging process, the strip and blocky slag produced by pyrolysis directly drops into a slag discharging water tank arranged below a slag discharging port through the slag discharging port. The method does not crush the material to be pyrolyzed, has a remarkable energy-saving effect, lower manufacturing cost of the device, and improves efficiency of the recycling synthesis treatment of the organic waste.

The invention relates to a waste gas protection system for a thermal treatment furnace and a control method. The system comprises a furnace body and a feeding table, an air displacement chamber is formed between the inlet of the furnace body and the feeding table, a No.1 door is arranged between the air displacement chamber and the feeding table, and a No.2 door is arranged between the air displacement chamber and the inlet of the furnace body; a fuel gas radiation pipe in the furnace body is connected with the input end of a fourth valve through an exhaust pipe, one path of the output end ofthe fourth valve is communicated with a burner waste gas exhaust pipe through a first valve, and the other path of the output end of the fourth valve is communicated with the cavity of the air displacement chamber through a second valve; and the burner waste gas exhaust pipe is communicated with the cavity of the air displacement chamber through a third valve, the system is provided with a blower, and the output port of the blower is arranged in the burner waste gas exhaust pipe. The system has the advantages that: a vacuum chamber is replaced by using the air displacement chamber, and the air in the air displacement chamber is displaced by using CO2 serving as a main component of the waste gas, so the air entering the furnace is reduced, and stability of furnace atmosphere is realized.

The invention discloses a crystalline silicon solar cell and a diffusion method thereof. The method comprises the following steps of: putting a silicon chip into a diffusion furnace and raising the temperature to 780-800 DEG C; introducing a preset amount of small nitrogen, oxygen and large nitrogen into the diffusion furnace through a diffusion furnace tube and keeping the internal temperature of the diffusion furnace at 780-800 DEG C for 15-20 minutes; introducing a preset amount of oxygen and large nitrogen into the diffusion furnace through the diffusion furnace tube and raising the internal temperature of the diffusion furnace to 850-870 DEG C for 10-18 minutes; and cooling the diffusion furnace and taking the silicon chip out, wherein the gas flow in the diffusion furnace tube is constant in the entire diffusion process. The depth of a PN junction of a solar cell produced with the method is small, the square resistance is more uniform, and the conversion efficiency of the solar cell is increased.

The invention belongs to the technical field of rod wire deformation processes in metallurgical industry and particularly relates to a production process for grooveless rolling of an 82B wire rod by a high-speed wire mill. The production process aims that special equipment is not required, the processing cost is low, industrialized production is easy to realize, the steel off-square problem of a grooveless rolling production process is solved, the production accident rate is greatly reduced, the product quality is improved, and the economic benefit is increased. The production process adopts the technical scheme as follows: the production process comprises the following steps: (1) heating a 82B steel billet; (2) rolling by a grooveless flat-roll rough rolling unit, wherein in the rolling process, the extension coefficient of each pass is controlled from 1.20 to 1.45, the broadening coefficient ranges from 0.10 to 0.65, and the running speed of the steel billet ranges from 0.20 m / s to 1.04 m / s; (3) entering an intermediate rolling unit and a pre-finishing unit in sequence for rolling; (4) rolling by a finishing unit; (5) cooling by water and entering a wire-feeding machine to obtain the wire rod; (6) cooling by air, winding and transporting, and finally packaging and warehousing to obtain the finished high-speed 82B wire rod.

The invention discloses an organic-inorganic hybrid halide luminescent material and its preparation method and application. The luminescent material is an organic-inorganic hybrid copper-based halide based on a quaternary ammonium salt, and its structural formula is A m Cu n x (m+n) , where A is the organic chain part of the quaternary ammonium salt, X is the halogen ion Cl ‑ , Cl ‑ , Br ‑ , I ‑ One or any combination of several anions, m and n are integers from 1 to 3, respectively. The organic-inorganic hybrid halide prepared based on the quaternary ammonium salt and the copper base has the characteristics of high PLQY, tunable spectrum, good stability in the atmosphere, and environmental friendliness.

The invention relates to a whole-body double-sided flame-separated heating rotary kiln and a method for producing direct reduced iron and co-producing carbon-based fertilizer. The rotary kiln cylinder body designed in the present invention is designed as an outer cylinder and an inner cylinder, and a deep reduction chamber is formed between the outer cylinder and the inner cylinder, which is divided into 6 to 12 deep reduction chambers by supporting partitions. The same amount of reduced materials can be filled in the deep reduction chamber of the deep reduction chamber, the filling rate is increased by 6 to 12 times, and the direct reduced iron production capacity of the rotary kiln is also increased by 6 to 12 times, which greatly increases the production capacity of the kiln, and is also relatively The specification of the kiln is reduced, and the investment of the kiln is relatively greatly reduced. Biomass materials such as straws other than coal can be used as reducing agents, which solves the environmental pollution caused by the incineration of biomass materials, turns waste into treasure, and simultaneously recovers high-concentration gas and co-produced bio-carbon-based fertilizer by-products, and realizes Energy saving, emission reduction and carbon reduction, and does not produce NOx.

The invention discloses a titanium-alloy supporting ring fusion-welding gas shield trailing cover and a shielding method. A trailing cover main body of a shield trailing cover is of a box structure and provided with an opening in the front face and an opening in the bottom face; a welding gun nozzle mounting hole is formed in the front end of the top face of the trailing cover main body, and an upper pipe with argon is arranged on the top face of the trailing cover main body; an inclined side plate is connected to the lower end of the left side face of the trailing cover main body and is inclined toward the outer side of the trailing cover main body; a web is connected to the right side face of the trailing cover main body, and a side pipe with argon is connected to the side face of the web; and the lower end of the inclined side plate and the lower end of the right side face of the inclined side plate are each of a circular arc structure which has the same curvature with the welding face of an outer circle of a supporting ring. The titanium-alloy supporting ring fusion-welding gas shield trailing cover can ensure that the heat affected area with the temperature of welding seam molten pool and parts exceeding 400 DEG C is not oxidized.

The invention discloses a production process of winebottles with decorations and can effectively reduce the occurrence probability of black spots on the surfaces of glass winebottles. The production process of winebottles with decorations comprises: a. applying appliques on the external surfaces of the glass winebottles; b. placing the multiple glass winebottles with appliques into the inner cavity of a decoration firing furnace for baking, so that a coloured glaze can be welded on the external surfaces of the glass winebottles. Specifically, step b consists of the steps of: while putting themultiple glass winebottles in the decoration firing furnace, keeping the volume sum of coloured glazes of appliques on the multiple glass winebottles at an amount of V1 and the inner cavity volume ofthe decoration firing furnace at an amount of V2, with the ratio of V1 to V2 less than or equal to 0.01 per thousand, and controlling an equal space between any two glass winebottles; heating the glass winebottles to a temperature of 580DEG C-590DEG C in the decoration firing furnace by means of preheating and temperature raising, and making the coloured glazes firmly welded on the external surfaces of the glass winebottles through an insulation process; cooling the glass winebottles. The process provided in the invention can effectively prevent formation of black spots on the surfaces of glass winebottles.