12 results about "Oxidation test" patented technology

The invention provides a synthetic lubricating oil composition and application thereof, and belongs to the technical field of lubricating oil. The synthetic lubricating oil composition comprises base oil, a pour point depressant and a composite additive, the base oil comprises synthetic ester base oil; the synthetic ester base oil consists of low-viscosity synthetic ester and high-viscosity synthetic ester. The composition has ultrahigh viscosity index and low-temperature performance, is diesel engine lubricating oil with very excellent low-temperature performance, passes a graphite flake friction characteristic test and a THOT oxidation test required by TES 439 specifications, and can meet the lubrication requirements of an engine and a transmission system.

An electric vehicle test chamber device for electric vehicle fluid oxidation testing. The device is incorporated into a system that includes a shaft implement such as a pump as well as a variable electric input mechanism with capacity to impart a variety of different types of electrical fields to the fluid. The fields may be induced by direct current, alternating current or an electromagnetic current. The system includes an acquisition unit for collection of oxidation data as well as capacity to account for a variety of other parameters applied to the fluid in order to attained enhanced accuracy of oxidation data analysis.

The utility model relates to the technical field of rock and soil testing, in particular to a rock and soil oxidation testing box which comprises a testing box body, the testing box body is existing equipment for rock and soil oxidation testing, and the front side of the upper portion of the testing box body is provided with a test sample placing opening. The test box comprises a test box body, and further comprises a door plate, a mounting frame, a placing frame, a filter screen, a fixing frame, a guide rod and a vibration piece, the door plate is hinged to the placing opening of the test box body, the mounting frame is assembled in the test box body, the top of the mounting frame is a frame body provided with a placing groove, and the placing frame is loaded in the placing groove of the mounting frame in a sliding mode. According to the utility model, the mounting frame and the placing frame are additionally arranged in the test box body, and the placing frame is driven by the vibrating piece to carry out vibration screening in the mounting frame, so that soil mixed in rock can be effectively screened, rapid separation of the rock and the soil after test is realized, and compared with manual operation, the test box is more efficient and saves time.

This invention provides a semiconductor oxidation prevention testing method and apparatus. The semiconductor oxidation prevention testing method includes: arranging multiple units under test (DUTs) on the top surface of a test sample; depositing a first film layer on the top surface of the test sample, ensuring the first film layer completely covers the multiple DUTs on the test sample; squeezing out the air between the first film layer and the test sample; and inserting a test probe through the first film layer and contacting the DUTs for testing, until all DUTs on the test sample have been tested. This invention protects the test sample and the DUTs on it by depositing a film to form a first film layer on the test sample. Furthermore, squeezing out the air between the first film layer and the test sample prevents the test probe from discharging during testing and from reacting with oxygen to form an oxide film. It is suitable for inter-process storage, long-term storage, and long-distance transportation. It saves production costs and improves testing efficiency.

The application relates to an oxidation testing device which comprises an experimental bin, a surface treatment assembly, an oxidation processor and a heating assembly. The experimental bin is configured with a testing cavity; the surface treatment assembly is arranged in the testing cavity; the surface treatment assembly is used for performing surface etching treatment on a sample to be tested located in the testing cavity; the oxidation processor is arranged in the testing cavity, and the oxidation processor is used for performing oxidation treatment on the sample to be tested subjected to the surface etching treatment for a preset time length; and the heating assembly is arranged in the testing cavity, and the heating assembly comprises a heating table which is used for bearing the sample to be tested and heating the same. The device can finally obtain the time required for critical secondary oxidation of the solder to be tested by adjusting the oxidation time of the oxidation processor on the solder to be tested, and then effectively guide the design of the process beat in the soldering process of the solar cell according to the time required for the critical secondary oxidation.

The invention relates to the technical field of fraction fuel oil detection and analysis, in particular to a fraction fuel oil oxidation stability measuring device which comprises a cabinet body and a plurality of sample tubes, a bath heating cavity is formed in the cabinet body, a plurality of insertion holes communicated with the bath heating cavity are formed in the cabinet body, and the sample tubes can penetrate through the insertion holes in a matched mode to be inserted into the bath heating cavity. An annular flexible connecting body is fixed on the inner wall of each bath heating cavity, an annular air bag is fixed on the inner edge wall of each flexible connecting body, and a clamping part for clamping the annular air bag when the annular air bag is inflated and expanded is arranged on the outer wall of the sample tube. Through linkage cooperation of the driving mechanism, the shaking assisting mechanism and the pushing linkage mechanism, the supporting plate is driven to conduct composite offset in the horizontal direction and the vertical direction, the sample pipe can be driven to synchronously conduct multi-dimensional shaking, the jolting and shaking working conditions of fuel oil in the actual transportation process are simulated, and the test efficiency is improved. Therefore, the environmental condition of the accelerated oxidation test is closer to a real scene, the evaluation deviation is reduced, and the prediction value of the measurement result on the actual storage and transportation stability is improved.

This invention discloses an anti-oxidation testing device and method. The anti-oxidation testing device includes a base and a test stand. The base holds a workpiece under test, which has multiple test rows arranged along a second direction. Each test row has multiple test units arranged along a first direction. The test stand is equipped with a probe and a nozzle. The probe contacts the test unit, and the nozzle sprays a protective liquid. The nozzle and probe move synchronously with the test stand. The test stand can move relative to the base along the first direction to switch the test units corresponding to the probe and nozzle. The test stand can also move relative to the base along the second direction to switch the test rows corresponding to the probe and nozzle. The nozzle is positioned upstream of the probe so that each test unit moves to the probe after passing through the nozzle for testing. This device allows for timely testing of individual test units after spraying, reducing the probability of oxidation due to evaporation of the protective liquid.

The invention discloses a synthetic ester antioxidant performance evaluation method based on model free dynamics and apparent activation energy, and belongs to the technical field of antioxidant performance analysis. According to the method, a model free dynamics method is utilized, and the apparent activation energy is calculated, so that rapid screening and performance prediction of the lubricating oil antioxidant system are realized. The antioxidant evaluation method can quickly, accurately and quantitatively evaluate the efficiency and synergistic effect of the synthetic ester antioxidant, has good consistency compared with the traditional long-term oxidation test result, and can greatly shorten the research and development period and reduce the research and development cost. The method disclosed by the invention can be widely applied to the fields of lubricating oil, lubricating grease, hydraulic oil, conduction oil and the like which take synthetic ester as base oil, and is used for developing novel antioxidants, comparing the performance of the existing antioxidants and optimizing a compound formula; the method has important significance in promoting the development of high-end synthetic lubricating materials and in the technical field of performance analysis of lubricating oil antioxidants.

The invention relates to the technical field of high-temperature oxidation testing, and relates to a design and use method of a novel high-temperature stress loading device, the loading device comprises a temperature control system, a stress loading system and a testing system, the temperature control system comprises a furnace body and a temperature monitoring device, and the furnace body can provide a preset temperature environment; the stress loading system comprises a weight loading mechanism and a test piece connecting mechanism, the test piece connecting mechanism comprises a plurality of test pieces, and the weight loading mechanism applies a preset stress load to the test pieces in the furnace body; the temperature monitoring device can monitor the real-time temperature in the furnace body and adjust the temperature in the furnace body when the real-time temperature exceeds the preset temperature. The test system can test the thickness of the oxide layer on the surface of the test piece and draw a change curve of the oxide layer thickness and the test time. According to the method, the oxidation behavior data under the coupling action of the high temperature and the stress can be obtained, and accurate data support is provided for predicting the service life of the turbine blade, optimizing the alloy component design and improving the surface protection process.

The invention discloses a coal mill dynamic and static ring compensation control method. In the aspect of dynamic and static ring sealing performance, high stone content in coal in the Xinjiang region seriously impacts and abrades dynamic and static rings of a coal mill, the abrasion rate of a grinding roller is increased, and a dynamic and static ring sealing gap is continuously increased. The method comprises the following steps that a gap self-adaptive compensation mechanism is designed on a sealing structure, automatic adjustment of a sealing gap after a grinding roller is abraded is achieved through combination of a spring set and a floating sealing ring, and the situation that the air leakage rate synchronously rises along with abrasion of the grinding roller is avoided; comparing and screening a multi-element alloy wear-resistant material containing Cr, Mo and V on the material of a sealing surface, performing forging and heat treatment, processing into a dynamic and static ring sealing element, and performing a wear test on site; and screening three types of candidate materials, and carrying out high-temperature oxidability test, hardness test and wear test to obtain performance data of each material under the actual working condition of the coal mill. The method is used for coal mill dynamic and static ring compensation control.

The invention relates to the technical field of micro-arc oxidation, in particular to a micro-arc oxidation test device with a liquid medicine cooling system, comprising a mounting seat, a test mechanism mounted on the mounting seat, a cooling mechanism mounted on the test mechanism, and a discharging mechanism mounted on the test mechanism; through installation of the test mechanism, micro-arc oxidation test on parts is facilitated, after equipment installation, the size is small, operation is convenient, liquid medicine replacement and cleaning are convenient, the test efficiency and quality are improved, through installation of the cooling mechanism, liquid medicine in the test mechanism is cooled, and through cooperation of the discharging mechanism and the limiting mechanism, the test efficiency is improved. The parts needing to be tested are placed and stably placed into the testing mechanism for testing, operation is safer and more convenient, the discharging mechanism can rotate by a certain angle through the rotating mechanism and the adjusting mechanism, operation smoothness during feeding and discharging is facilitated, and meanwhile, parts of different sizes can be conveniently placed.

The present disclosure relates to a forced oxidation test system, including: forced oxidation subsystems, a first cabinet, a second cabinet, and connecting devices. Inner cavities of adjacent forced oxidation subsystems are arranged in parallel. The forced oxidation subsystems include: forced oxidation portions, inner cavities of adjacent forced oxidation portions being arranged in series. To-be-tested packages are placed on the first cabinet. The second cabinet is connected to the first cabinet through the connecting devices. The forced oxidation subsystems are arranged opposite to the to-be-tested packages. The second cabinet is configured to move along an axis of the connecting devices towards a direction adjacent to the to-be-tested packages until the inner cavities of the forced oxidation portions are sealed and mounted on the to-be-tested packages, such that a replacement gas in the inner cavities of the forced oxidation portions is permeated into the to-be-tested packages.