35results about How to "Strong breakdown resistance" patented technology

The invention provides a method for preparing a magnetic powder core, comprising: mixing carbonyl iron powder with a phosphating solution, and performing phosphating treatment to obtain treated iron powder; drying and sieving the treated iron powder and mixing with an insulating coating agent coating to obtain coated powder; the insulating coating agent includes organic resin, inorganic coating material, coupling agent and curing agent; the coated powder is granulated, pressed and solidified to obtain a magnetic powder core. In the present invention, by selecting a specific insulating coating agent and combining other operations, the magnetic powder core achieves the best comprehensive performance, which not only has high saturation magnetic flux density and stable magnetic permeability and other magnetic performance indicators, but also has breakdown resistance. Strong ability; and excellent molding performance, which meets the molding of complex structure of integrated inductor; mechanical properties can also meet industrial requirements. The present invention makes the insulating coating layer of the magnetic powder core more stable through multi-layer coating combination, and can make the working stability of the manufactured product stronger during the service life.

The invention relates to a vacuum arc extinguishing chamber ceramic shell component and a process for manufacturing the same, wherein the ceramic shell component comprises a ceramic shell and a shielding barrel; the inner wall of the ceramic shell is provided with a stiffener rib on which the shielding barrel is fixed; the edge of an upper opening of the shielding barrel is tightly pressed on thestiffener rib in a form of flanging structure, and the shape of the outer side surface of the upper opening part of the shielding barrel had better adapt to the stiffener rib. When the invention is manufactured, the shielding barrel is arranged in the ceramic shell, and the height of the edge of the upper opening of the shielding barrel is over the height of the stiffener rib of the ceramic shell; the shielding barrel is moved upward, so that the upper opening part of the shielding barrel correspondingly contact the lower part of the stiffener rib; the upper opening of the shielding barrel isforced to tightly press on the stiffener rib in the form of flanging structure. The ceramic component has the advantages of thoroughly avoiding the problem of the falling off of the shielding barrel,along with simple structure and reliable performance, and thoroughly avoids the problem of the dropout of the shielding barrel, and simple manufacturing process, convenient operation, low production cost, high production efficiency and production qualification rate and no environmental pollution due to the adoption of a tightly clamping and pressing structure instead of a welding structure.

The invention relates to a cable material filler which is prepared from the following raw materials in parts by weight: 0.5-0.7 part of zinc glycinate, 0.2-0.3 part of folic acid, 0.4-0.5 part of insect wax, 1-2 parts of sodium antimonide, 3-5 parts of magnesium silicate, 1.2-1.5 parts of disodium edetate, 1-1.3 parts of sodium polyacrylate, 1.4-1.6 parts of polyamide modified alkyd resin, 2-4 parts of diisononyl phthalate, 0.2-0.3 part of zinc soap, 2-3 parts of active nano calcium carbonate, 75-80 parts of medical stone powder, a right amount of water, a right amount of 4-6% hydrochloric acid and 10-15 parts of assistant. The filler has the advantages of favorable hydrophobicity, favorable compatibility with the cable material and high breakdown resistance, and can endow the cable with favorable light fastness, heat resistance, aging resistance and electrical insulation properties; and the filler has favorable water resistance, favorable extraction resistance and low toxicity, can be widely used in the cable material, and can lower the cost, thereby obtaining higher economic benefit.

The invention relates to a T-shaped coaxial power divider. The T-shaped coaxial power divider comprises a first section of inner conductor I, a third section of inner conductor I and a second sectionof inner conductor I, wherein the first section of inner conductor I and the second section inner conductor I are fixedly connected, the second section of inner conductor I and the third section of inner conductor I are fixedly connected, a second section of inner conductor II and a third section of inner conductor II sleeve the periphery of the first section of inner conductor I, are coaxial to each other and both are in cylindrical shapes, the second section of inner conductor II is arranged between the second section of inner conductor I and the third section of inner conductor II, an end part, far away from the second section of inner conductor I, of the second section of inner conductor II is fixedly connected with one end part of the third section of inner conductor II, a gap is formed between the second section of inner conductor II and the second section of inner conductor I, and the inner diameter of the third section of inner conductor II is smaller than the inner diameter ofthe second section of inner conductor II. The coaxial power divider is resistant to high pressure and is high in breakdown-resistant capability, port impedance matching is easy, the coaxial power divider can be directly connected with a high-power device, and the application requirement of a high-power circuit is met.