31results about How to "Low residual oxygen" patented technology

The invention discloses a high-air-tightness low-free-oxygen-content nano disperse copper alloy and a short-process preparation technology, and wherein the alloy components comprise Al2O3, Ca and La.The preparation technology is made by the following steps that preparing Cu-Al2O3 alloy powder by adopting an internal oxidation method, and then mixing the Cu-Al2O3 alloy powder with Cu-Ca-La alloy powder, wrap covering the mixed powder under the protection of argon, carrying out hot extrusion at 900-920 DEG C and then rotary forging, after rotary forging, the wrap covering is vacuumized to be less than or equal to 10<-3>Pa, the wrap covering is sealed and is placed in a nitrogen atmosphere with the temperature of 450-550 DEG Cand the pressure intensity of 40-60 Mpa for 3-5 hours. According to the preparation technology disclosed by the invention, the secondary solid reduction of Ca and La is utilized, so that residual free oxygen is effectively removed and the dispersion strengthening effect is achieved, and finally the high density is obtained through vacuum medium-temperature creep deformation. The disperse copper prepared by the invention has the advantages that low free oxygen content (<= 15ppm), high dimensional stability and good air tightness after hydrogen annealing, good in gas tightness, the gas leakage rate is less than or equal to 1.0*10<-10> Pa.m<3> / s, the preparation technology is suitable for industrial production and can be used as a variety of sealing device materials such as an electric vacuum shell sealing device and a novel energy automobile high-voltagedirect-current relay.

The invention belongs to the field of food equipment, and particularly discloses food intelligent vacuum baking equipment based on control of Internet of Things. The food intelligent vacuum baking equipment comprises a baking device in which a roasting chamber is arranged, a gas supply device suitable for transporting carrier gas to the roasting chamber, a vacuum device suitable for producing vacuum environment in the roasting chamber, a circulating device suitable for enabling the carrier gas in the roasting chamber to circulate, a control device and an operation and control terminal, whereina gate is arranged at an entrance and exit suitable for foods to input and output, in one side of the baking device, in a sealing manner; the operation and control terminal is used for manipulating the control device through the Internet of Things in a long-distance manner and setting a corresponding roasting technology; and the control device is used for manipulating the vacuum device to vacuumize the roasting chamber, roasting foods in the vacuum environment with carrier gas and manipulating the circulating device to drive the carrier gas to cool the foods. The foods are roasted in the vacuum environment, so that the crispness of the foods and the uniformity of the crispness are notably improved; the carrier gas is exhausted in time for baking volatile matter; and the quantity of oil oxidative deterioration substances and oxygen residual quantity in the foods are lower, the preservation of the foods is facilitated, and the quality guarantee period can be prolonged by 0.5-1 time.

The invention belongs to the field of food equipment, and specifically discloses an intelligent food baking equipment suitable for extending the shelf life, including an air supply device, a baking device, a cooling device, an oxygen sensor group and a control device suitable for judging whether the air has been fully discharged The control device is built with a baking process including protective gas parameters and baking temperature; the air supply device sends protective gas to the baking device and the cooling device respectively, and the baking device and the cooling device are sealed and connected, which is suitable for food from the baking device to the cooling device. transfer in the cooling device; the food input port of the baking device and the food output port of the cooling device are respectively provided with gates in a sealed manner to isolate the food from the air; the control device manipulates the baking equipment to process the food in a protective gas environment based on the baking process Baking and cooling, the protective gas isolates the food from the air, the oil in the food is difficult to gas and oxidize, the oxidative deterioration of the oil in the food and the residual oxygen are very small, the oxygen absorption capacity is poor, the food is easy to store, and the shelf life can be increased by 0.5 -1 times.

The invention belongs to the field of food devices, and particularly discloses a cooling device suitable for improving the soft / crispy uniformity of food. The cooling device comprises a gas supply device, a cooling device, a sensor group, a valve group and a circulating device. The gas supply device conveys protection gas to the cooling device and exhausts air in a cooling chamber. The cooling chamber is internally provided with a cold wind spraying nozzle and an exhaust floating nozzle which are suitable for evenly distributing protection gas and a cold supporting belt for transferring and bearing food. The exhaust floating nozzle, the circulating device and the cold wind spraying nozzle are sequentially communicated, and the circulation of the protection gas in the cooling chamber is driven. A food input port and a food output port of the cooling device are each provided with a gate through sealing so that the food can be isolated from the air. The cooling device is controlled to cool the food in the environment of protection gas, the protection gas flow is uniform in distribution, the soft / crispy uniformity of the food is high, the food is not prone to peeling and cracking, thefood is isolated from the air by the protection gas, the residual amount of grease oxidized deterioration objects and oxygen in the food is quite small, the food is easy to store, and the shelf life is remarkably prolonged.

Disclosed is a method for preparing a ferrotitanium alloy based on aluminothermic self-propagating gradient reduction and slagging refining, the method comprising: (1) carrying out aluminothermic self-propagating gradient reduction by means of a first method, wherein raw materials are divided into several batches, the first batch of materials is put into a reaction furnace and is ignited with a magnesium powder from the top of the materials so as to initiate a self-propagating reaction, and the other batches of materials are successively added until the reaction is complete; or carrying out aluminothermic self-propagating gradient reduction by means of a second method, wherein raw materials other than aluminum powder are mixed until uniform and added into a continuous mixer at a uniform flow rate, the aluminum powder is added into the continuous mixer at a flow rate decreasing at a gradient, and the uniformly mixed raw materials are simultaneously continuously introduced into the reaction furnace for an aluminothermic self-propagating reaction until all the materials are completely reacted; (2) smelting by means of maintaining a temperature to obtain an upper layer of an aluminum oxide-based slag and a lower layer of an alloy melt; (3) spraying a refining slag material into the lower layer of alloy melt for stirred slagging refining; and (4) cooling the refined high-temperature melt to room temperature, and removing the upper layer of slag to obtain the ferrotitanium alloy.

The invention belongs to the field of food equipment, and specifically discloses a baking device and a baking process capable of prolonging a food warranty period. The device comprises an air supply device, a roast device, an exhaust fan, and an oxygen sensor. A roast cavity of the roast device is provided with a jet head, a roast tray, and an air capture head in sequence from up to bottom. An airoutlet of the air supply device is communicated with an air inlet of the jet head. An exhaust port of the air capture head is communicated with an exhaust air duct. The oxygen sensor is assembled inthe exhaust air duct, and determines whether all air in the roast cavity is discharged. One side of the roast device is provided with an entrance for moving food in and out. The entrance is provided with a gate in a sealing manner, and the gate isolates the roast cavity from air. The roast device bakes and cools food in a shielding gas environment. The shielding gas isolates food from air. Duringbaking and cooling periods, grease in food is difficult to take oxidation reaction, grease oxidative deterioration substances and oxygen residual quantity in the food are very little, oxygen uptake capacity is low, so that the food is easy to store, and warranty period can improve by 0.5-1 time.

The invention discloses a food intelligent baking system based on control of Internet of Things. The food intelligent baking system comprises a control terminal, a control device, a gas supply device,a steam device, a baking device and a cooling device, wherein the control terminal is in communication connection with the control device; the gas supply device is used for transporting shielding gasto the baking device and the cooling device; the steam device is used for transporting steam to the baking device and the cooling device; the baking device is in sealing communication with the cooling device, and is suitable for enabling foods to transfer from the baking device to the cooling device; gates are respectively arranged at a food input opening of the baking device and a food output opening of the cooling device in a sealing manner, so that foods are isolated from air; and the control terminal is used for manipulating the control device and setting a baking technology through the Internet of Things; and the control device manipulates the baking system to bake and cool foods in the shielding gas environment containing vapor, moisture in foods is uniformly volatilized, and foodsare damper and softer. Through the adoption of the food intelligent baking system disclosed by the invention, the foods are isolated from the air, the quantity of fat oxidative deterioration substances and the quantity of residual oxygen in the foods are low, the oxygen sucking capacity is poor, the foods are easy to store, and the quality guarantee period can be prolonged by 0.5-1 time.

The invention discloses food baking equipment based on the intelligent control of Internet of things. The equipment comprises a control terminal, a control device, an air supply device, a steam device, a baking device with a built-in baking chamber, an exhaust fan and an oxygen sensor, wherein the control terminal and the control device are communicated and connected. A jet head, a holding bakingtray and a captive gas head are arranged in the baking chamber. The air supply device and the steam device convey a protection gas to the jet head. The oxygen sensor is arranged in an exhaust pipelineconnected to the captive gas head so as to determine whether air is discharged completely. The inlet and outlet of one side of the baking device, through which food is moved in and out, is provided with a gate in a sealing mode so that the baking chamber is separated from the air. The control terminal controls the control device and sets process parameters through the Internet of things, and thecontrol device makes the baking device bake the food in the protective gas environment containing water vapor, moisture in the food is evenly volatilized, and the food is wet and soft. The food is separated from the air, an oil-oxidation deteriorated substance and oxygen residues in the food are extremely less, an oxygen absorption capacity is poor, the food is easy to preserve, and a shelf life can be increased by 0.5-1 times.