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292results about How to "Improve durability" patented technology

Deep cavity processing method based on titanium alloy monobloc forging component

InactiveCN105312835AReduce the number of tool changesImprove durabilityCooling methodsTitanium alloy
The invention discloses a deep cavity processing method based on a titanium alloy monobloc forging component. The deep cavity processing method comprises the following steps of: firstly performing hole drilling process by selecting an uncoated hard alloy drilling-and-cutting blade, wherein an internal cooling manner is adopted; performing inserting-and-drilling processing on a deep cavity by adopting a coated inserting-and-milling blade, wherein an S-shaped processing path is adopted, the row spacing S is 0.5 multiplied by the diameter of a blade, the cutting speed V is 30m/min, the radial knifing depth ae is 0.3 multiplied by the diameter of the blade, feed per tooth fZ is 0.08mm/z, and the blade is retracted in an arc manner; performing inserting-and-milling crude processing by adopting the same blade, wherein the S-shaped processing path is adopted, and the adopted row spacing S is 5mm; performing inserting-and-milling essence processing, wherein the S-shaped processing path is adopted, the adopted row spacing is shown as the description, the blade is retracted in the arc manner, and the internal cooling manner is adopted; performing milling-and-cutting processing on the bottom filleted corner of the deep cavity by adopting a round head milling blade; and finally polishing. Through the adoption of the deep cavity processing method disclosed by the invention, the number of the adopted blades during the deep cavity processing is small, the blade changing times and the corresponding assisting time are shortened, the durable degree of the blades is increased, and the processing precision of the deep cavity is guaranteed.
Owner:CHENGDU AIRCRAFT INDUSTRY GROUP

Socket type self-returning multi-section prefabricated pier and assembly method thereof

The invention provides a socket type self-returning multi-section prefabricated pier and an assembly method thereof. The multi-section prefabricated pier comprises a bearing platform and the prefabricated bridge pier, wherein the prefabricated pier comprises a inserting bearing platform section, a plurality of pier body sections, a prestressed tendon, and energy dissipation ribs; the assembly method comprises the following steps that the prefabricated pier is prefabricated; a horizontal assembly method is adopted in a prefabricated factory, and the prestressed tendon is tensioned to enable allthe sections to be connected into a whole; and high-strength non-shrinkage cement slurry is injected into a pier grouting sleeve through grouting holes. On the site, the pier is lifted and is inserted into a pier installing hole, so that a certain gap is kept between the outer wall of the inserting bearing platform section and the inner wall of the pier installing hole; and after the prefabricated bridge pier is positioned, a guide pipe is inserted into the bottom of the gap, the high-strength non-shrinkage cement slurry is injected into the bottom through the guide pipe, and the slurry is discharged from bottom to top until the gap between the inserting bearing platform section and the pier installing hole is completely filled.
Owner:ZHENGZHOU UNIV

Polyester/cotton interwoven fabric dyeing and fishing process

The present invention discloses a polyester/cotton interwoven fabric dyeing and fishing process, which comprises cold stacking, washing and blanching, shaping, mercerizing, ammonia nitrogen emission-free environmental-protection type dispersing reactive printing, persistent moisture absorption and sweat releasing finishing, and stentering and anti-shrinking treating. According to the present invention, in the ammonia nitrogen emission-free environmental-protection type dispersing reactive printing, the color fixation method that baking soda and urea are added to a printing slurry after printing drying in the traditional process are abandoned, only a dye, a paste and other materials are added to a printing slurry, an alkali agent and gravy salt rapid steam color fixation method is adopted after printing drying to make color fixation of a reactive dye, the whole process does not adopt urea as the additive, no ammonia nitrogen exists in the discharged water, and characteristics of environmental protection and energy saving are provided; and the persistent moisture absorption and sweat releasing finishing process adopts a nano-scale moisture absorption rapid drying agent and a washing resistance fixing agent, and the used additives and fibers are subjected to cross-linking after high temperature baking so as to significantly increase function persistence.
Owner:SUNTEX
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