32results about How to "Improve degassing" patented technology

The invention provides a method for soaking a high-pressure negative electrode power battery. The method comprises the following steps: A. Vacuum shelving: place the battery core that has just been injected with electrolyte but has not been sealed once in a vacuum box, and the battery core is 60- Placed at an angle of 90 degrees, the vacuum degree of the vacuum box is controlled at -0.085MPa~-0.09MPa, and the shelf time is 10 minutes to 15 minutes; B, high temperature shelf; C, degassing; D, rolling; E, secondary high temperature shelf; F. Pre-charging: On the charging device, use 0.007C, 0.01C, 0.1C, and 0.2C to pre-charge the batteries after step E. The charging upper limit voltages are 3.17V, 3.17V, and 3.17V respectively. , 3.47V, the charging time is 50 minutes, 70 minutes, 120 minutes, and 300 minutes respectively; G, degassing; H, secondary rolling: the battery cell after the completion of step G is subjected to secondary rolling according to step D After pressing, the impregnation process of the high-pressure negative electrode power battery is completed. The method makes it easy to infiltrate the low-porosity negative electrode sheet generally, and the liquid loss of the electric core is low.

The invention discloses a zinc alloy and a manufacturing method thereof. The zinc alloy comprises the following elements: 4-7% of Al, 0.5-1.5% of Cu, 0.4-0.7% of Ti, 0.07-0.1% of B, 0.02-0.025% of Mg,0.1-1% of others, and the balance Zn. The method comprises the following steps: (1) pure aluminum is heated to a molten state, and is sprayed on the inner surface of a crucible; and a filter structure is fixed on the side surface of the inner surface; (2) zinc alloy raw materials are put in the crucible, and are vacuumized and heated until the raw materials are totally molten to obtain a molten pool; (3) a graphite stirring device is started; and a refining agent is continuously added to obtain a purified molten pool; (4) the purified molten pool is modified, and is cast and molded by a cooling extrusion process to obtain a zinc alloy ingot to be treated; and (5) the zinc alloy ingot to be treated is subjected to spheroidizing annealing to obtain the needed zinc alloy. The zinc alloy is high in purity, low in large-size dendritic segregation, uniform in overall grain size refining and low in primary structure multiple eutectic dendritic crystals.

The invention provides a factorized circulating water high-density three-dimensional ecological breeding system which comprises a plurality of breeding tanks, a breeding circulating water treating system communicated with the breeding tanks, and three-dimensional spraying aquaculture columns arranged on the upper portions of the breeding tanks. The factorized circulating water high-density three-dimensional ecological breeding system is characterized in that the breeding circulating water treating system comprises a water collection tank, a water pump, a microfilter, a decarburization area, a nitration area, a degassing area, an ultraviolet sterilizing area and a temperature adjusting and tempering tank sequentially along a water flow direction, the water collection tank is communicated with the breeding tanks through sewage inlets, and the temperature adjusting and tempering tank is communicated with the three-dimensional spraying aquaculture columns through a clean water outlet and the water pump; a biological filtering area or a low-speed nitration area are arranged between the nitration area and the degassing area; a mud blocking slot is formed between the decarburization area and the nitration area, a plurality of mud-blocking water-passing holes are formed in a wall of the decarburization area on one side of the mud blocking slot, a plurality of nitration water incoming holes are formed in a wall of the nitration area on the other side of the mud blocking slot, and bottom height of the mud-blocking water-passing holes is greater than height of a mud discharging pipe in the decarburization area. The factorized circulating water high-density three-dimensional ecological breeding system is low in investment, high in space utilization rate, healthy and efficient.

The invention relates to a method for generating electromagnetic force with temporal and spatial variation in a conducting liquid by adopting fluid driving, and belongs to the technical field of electromagnetic metallurgy, preparation of semiconductor materials, chemical industry and glass industry. The method comprises the following steps: firstly, a cylindrical cavity body is formed in a conducting liquid, wherein the cavity body is provided with a driving fluid channel port, a turbine blade is arranged in the cylindrical cavity body, and a permanent magnet and the turbine blade are fixed oppositely; the driving fluid enters or flows out from a channel port of the cavity body according to the cycle P, drives the turbine blade to rotate forward or backward according to the cycle P, and drives the permanent magnet to rotate, and a rotary magnetic field for cyclic variation in direction is generated; and eddy current is generated in the conducting liquid at the periphery outside the cavity body, the rotary magnetic field and the eddy current interact, and the electromagnetic force is generated so as to drive or stir the conducting liquid. An electromagnetic driver formed by adopting the method provided by the invention can be used in a metal condensation process to improve macrosegregation, a metal alloying process as well as the field for preparing gradient materials, composite materials and the like.

The invention discloses vacuum degassing equipment comprising a degassing cavity, a feed inlet, a vacuum air extractor and a discharge outlet. The degassing cavity comprises a ceramic filtration plate, air bricks, a thermal insulating wall and a flow hole plug. The feed inlet is formed in the side wall on the upper portion of the degassing cavity. The discharge outlet is formed in the side wall onthe lower portion of the degassing cavity. The discharge outlet and the feed inlet are not in the same side. An air extraction opening of the vacuum air extractor is inserted into the degassing cavity from above the degassing cavity. The air bricks are arranged at the bottom of the degassing cavity. A step projection is further arranged in the degassing cavity. A through hole is formed in the middle. The flow hole plug is arranged in the through hole of the step projection. Degassing and deslagging efficiency of the vacuum degassing equipment is high, a foundation is laid for solving the problem of secondary pollution, comprehensive deslagging efficiency is also better than that of a traditional method, and quality of a cast ingot is good. Various devices are modularized, the number of the devices is reduced, a launder is shortened, and assembly and use are convenient. Meanwhile inert gas can be recycled, and investment and cost are reduced.