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42results about How to "Easy to diffuse" patented technology

Test system for extension of multi-axis and salt-spray corrosion fatigue crack

The invention relates to a test system for the extension of a multi-axis and salt-spray corrosion fatigue crack. The test system comprises a fatigue tester for providing I-type, II-type, III-type and compound fatigue loads required by a test for a test sample through a pull-cut-twist multi-axis loading fixture, and further comprises a salt-spray corrosion environmental box, wherein the salt-spray corrosion environmental box comprises a salt-spray corrosion box body and a salt-spray pre-occurrence box body which are mutually communicated through a pipeline; the salt-spray pre-occurrence box body conveys air and salt water required by salt-spray forming to the salt-spray corrosion box body; the salt-spray corrosion box body provides a required salt-spray corrosion environment for the fatigue crack extension test; both the pull-cut-twist multi-axis loading fixture and the fatigue crack extension test sample are positioned in the salt-spray corrosion box body. Through the adoption of the test system, the fatigue crack extension rate and other fracture mechanics parameters under the combined action of multi-axis loads and the salt-spray corrosion environment can be measured relatively well, and thus the material selection design and the service life evaluation for marine engineering equipment serving in the salt-spray corrosion environment and under a complex stress state can be supported.
Owner:HEFEI GENERAL MACHINERY RES INST +1

Anti-mosquito breathable entrance door

The invention discloses an anti-mosquito ventilation entrance door which comprises a door frame and a door body, a ventilation device is arranged on one side of the door body, and a mosquito repelling air injection device and an air supply device are arranged on the other side of the door body. The ventilation device comprises a ventilation box, a gauze element arranged on the side, close to the air supply device, of the ventilation box, a privacy box on the other side of the ventilation box, an L-shaped lifting opening and closing box connected with the inner wall of the door body in a sliding mode, a mosquito repelling and air dispersing component arranged in the L-shaped lifting opening and closing box, and an airflow regulating and controlling component arranged at the end of the L-shaped lifting opening and closing box. The mosquito repelling and air spraying device comprises an airflow transmission part and a mosquito repelling and air spraying part embedded in the outer wall of the door body; the air supply device comprises two positioning grooves, an opening degree adjusting plate with the two ends hinged to the inner walls of the positioning grooves correspondingly, limiting components arranged on the inner walls of the positioning grooves, and an air bag component arranged between the opening degree adjusting plate and the door body. According to the entrance door, mosquitoes can be prevented from entering a room when a user enters the door, and mosquito repelling is facilitated.
Owner:安徽曼特安防科技有限公司
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