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166results about How to "Effective exhaust" patented technology

Full penetration fillet weld back-gouging-free welding technology

The invention belongs to the technical field of steel structure welding and provides a full penetration fillet weld back-gouging-free welding technology. The welding technology comprises the following steps of: 1) processing a groove of a web plate and decreasing the welding groove as much as possible, 2) fabricating a welding body, ensuring an inclination angle of the welding body to allow a center line of a welding wire to be located on a bisector of an included angle between the groove of the web plate and a wing plate during welding, 3) assembling and placing the web plate and the wing plate on the welding body in a push-against manner, ensuring the straightness and planeness of the web plate and the wing plate and accurately controlling focuses of the web plate and the wing plate, 4) selecting an appropriate welding wire material according to performance of a base material, and carrying out carbon dioxide gas shielded welding on a weld on the reverse side of the groove of the web plate to form a welding backing plate for later groove welding, 5) carrying out union melt welding as the first U-shaped groove welding, and 6) carrying out layered filling welding via the union melt welding, and finally carrying out cosmetic welding, wherein the groove of the web plate is a unilateral U-shaped or V-shaped groove.
Owner:CHINA SIXTH METALLURGICAL CONSTR

Novel control method for improving lithium ion soft-package laminated battery diaphragm fold

The invention relates to a novel control method for improving lithium ion soft-package laminated battery diaphragm fold. The problem that the battery performance is influenced due to the fold of the soft-package laminated lithium ion battery diaphragm is solved. The control method comprises the following steps: laying down a battery after liquid injection, thereby ensuring that the electrolyte sufficiently infiltrates a pole piece; and then performing rolling on the lay-down battery, and controlling the pressure and speed of the rolling in the rolling process; pre-charging the battery after the rolling is ended; and performing secondary rolling on the completely pre-charged battery, further shaping the diaphragm, and releasing the gas to finish the secondary package. The contacting interface between a positive/negative pole piece and the diaphragm is better by comparing the lithium ion soft-package laminated battery prepared based on the control method with the battery without performing the rolling shaping, the dead lithium existing in the fold area caused by the diaphragm fold is avoided, thus the capacity of the positive/negative material is sufficiently played, and the batteryperformance is improved.
Owner:JIANGSU FRONT NEW ENERGY +1

One-way exhaust valve bag

The invention discloses a one-way exhaust valve bag. The valve bag comprises a bag body and a self-sealing feed valve port, wherein, at least one one-way exhaust device is arranged on the bag body, the one-way exhaust device is a gas passage which is formed by closely fitting at least two films together and then sealing two sides, and adjacent surfaces of the two films are at least partially equipped with heat-resisting materials; the device is connected with the interior and exterior of the bag body, and is bonded or welded with the bag body or / and the bag bottom; and the gas passage in the packaging bag is stuck with air-permeable materials such as sponge and the like. In the invention, when the packaging bag is filled or extruded, gas in an accommodation cavity is quickly exhausted from the gas passage through the air-permeable materials under the action of pressure, and the air-permeable materials prevent leakage of packaged materials during the gas exhaust process; and the gas passage part outside the bag is ordinarily remained in a close fit status owing to attraction between the synthetic resin films and atmospheric pressure action so as to prevent entry of air. By utilizing the bag, the conflict that gas exhaust and moisture protection can not be realized at the same time is solved; and the packaging bag has the advantages of simple process and low cost.
Owner:王子颖
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