A New Electric Heating Type Suction Element
A new type of electric heating technology, which is applied in the direction of suction, electric tube/lamp degassing, container pressure maintenance, etc., can solve the problems of high-impact small electric vacuum device vacuum maintenance, powder dropping of suction components, and inconvenient assembly, etc., to achieve The effect of wide activation temperature range, excellent suction performance and convenient assembly
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Embodiment 1
[0015] A nickel-chromium alloy tube with a wall thickness of 20 μm and a diameter of 1 mm is used. The cross-section of the sleeve is circular, and laser drilling is used to form a lattice network structure. The diameter of the microholes is 40 μm, and the radial spacing is 0.1 mm. The total length of the tube is 14mm, and the total micropore area accounts for 9% of the total surface area of the alloy tube; the alloy tube is filled with zirconium vanadium iron getter material with a diameter of 60-100 μm, and the packing density is 4.6mg / mm 3 ; The two ends of the alloy tube are directly sealed and used as electrodes and support frames; the suction rate of the suction element is as high as 4820Pa.ml / g in ten minutes after activation at 400 ° C, with good suction performance. The suction element is subjected to an impact test with an impact acceleration of 500g, a frequency range of 20-2000Hz, and a power spectral density of 0.12g 2 Under the condition of random vibration of ...
Embodiment 2
[0017] A nickel-chromium alloy tube with a wall thickness of 50 μm and a maximum diameter of 3 mm is used. The cross-section of the sleeve is elliptical, and laser drilling is used to form a lattice network structure. The diameter of the microholes is 100 μm, and the radial spacing is 0.1 mm. The total length of the alloy tube is 6mm, and the total micropore area accounts for 30% of the total surface area of the alloy tube; the alloy tube is filled with zirconium vanadium manganese getter material with a diameter of 120-150μm, and the filling density is 3.2mg / mm3; the end of the alloy tube is spot welded with nickel The strip is used as an electrode and a support frame after the transition; the suction rate of the suction element is as high as 5147Pa.ml / g in the tenth minute after activation at 500 ° C, which has good suction performance. The suction element is subjected to an impact test with an impact acceleration of 500g, a frequency range of 20-2000Hz, and a power spectra...
Embodiment 3
[0019] The iron-chromium-aluminum alloy tube with a wall thickness of 40 μm and a diameter of 5 mm is used. The cross-section of the sleeve is elliptical, and laser drilling is used to form a lattice network structure. The diameter of the microholes is 10 μm, and the radial spacing is 0.15 mm. The total length of the alloy tube is 10mm, and the total micropore area accounts for 10% of the total surface area of the alloy tube; the alloy tube is filled with zirconium aluminum getter material with a diameter of 60-100μm, and the filling density is 4.1mg / mm 3 The end of the alloy tube is spot-welded with nickel wire and then used as an electrode and support frame; the suction rate of the suction element is as high as 4086Pa.ml / g in ten minutes after activation at 700 ° C, which has good suction performance. The suction element is subjected to an impact test with an impact acceleration of 500g, a frequency range of 20-2000Hz, and a power spectral density of 0.12g 2 Under the cond...
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