6 results about "Low pressure molding" patented technology

The invention discloses a preparation method of high-temperature magnetic slurry for an inductor capable of being formed at low pressure, and relates to the technical field of electronic component materials. Magnetic powder is pretreated through a coupling agent, a uniform molecular layer can be formed on the surface of the magnetic powder, the acting force between the magnetic powder and organic molecules of a glue solution is improved, dispersity is enhanced, and eddy-current loss is reduced; the epoxy resin system with a specific ratio uniformly coats the magnetic powder by means of a high-speed rotation mode of a homogenizer, and can be converted into a viscous flow state after being heated, so that the magnetic powder has excellent warm-pressure fluidity, improves the magnetic density through pressing, can be matched with a curing agent to be rapidly cured, can be stably formed under the low pressure of 30-50 MPa, and avoids coil damage and magnetic core cracking; and the method is suitable for preparation of complex-structure composite inductors.

The utility model discloses a kind of low-pressure injection mould for lithium battery sealing element, it is related to injection mould technical field, for the forming of the sealing plastic piece of the two ends of lithium battery core, the injection mould includes lower mould of upper mould, lower plate, intermediate plate, spacer plate and bottom plate, the upper mould includes upper plate, the inside of the upper plate is equipped with two groups of feeding block, the inside of each feeding block is equipped with two feeding ports, the top of the lower plate is also provided with two groups of LR sliding block, the sliding block is provided with inclined column insertion hole.The utility model in operating process, for security, cannot exert too large pressure and too high temperature to it, therefore by the setting of the low-pressure forming mould of the utility model, when clamping, inclined column drives LR sliding block to be pressed to the middle, when opening mould, inclined column drives LR block to be pulled apart to two sides, so that the mould is convenient to take and place product, convenient to use.

The present application relates to a kind of card pressure pipe forming methods of guiding pressure and flow, which is by setting the guiding pressure and flow hole at the low-pressure forming section of punch, during the expansion of punch, the liquid in the liquid channel in punch enters into the low-pressure forming section of punch through the guiding pressure and flow hole, and enters into the inner wall of die cavity and the outer wall of pipe blank between;So that the liquid pressure inside and outside pipe blank is equal, so as to prevent pipe blank from swelling deformation under the action of internal and external pressure;The punch of greater friction resistance or the punch of high-pressure sealing section that first contact with the end of pipe blank will push the axial movement of pipe blank, until the high-pressure sealing section of two groups of punch is contacted with the end of pipe blank, and the centering of pipe blank is realized;Two groups of punch continue to move towards each other, while increasing the injection amount of liquid medium, so that the liquid medium between the inner wall of pipe blank and the high-pressure sealing section of punch promotes the swelling deformation of the forming site of pipe blank, until the outside of the forming site cooperates with the inner wall of die cavity, so as to complete the forming of card pressure pipe.

The invention discloses an isostatic forming die for an internal channel of a material. The isostatic forming die comprises an isostatic pressing die, a low-pressure forming die, an internal channel die and a bar support. Putting an isostatic pressing mold with an upper opening into a low-pressure forming mold, pouring an isostatic pressing working medium which is the same as that of an isostatic pressing machine into an inner channel mold pipeline material of which the length is not less than the total length of an inner channel, and sealing two ends of an inner channel mold pipeline after the working medium is filled; the method comprises the following steps: putting a workpiece into an isostatic pressing die, carrying out loop binding and fixing by using a wire and bar bracket to form a workpiece inner channel die which is completely consistent with the design, punching holes in the isostatic pressing die corresponding to the two ends of the inner channel die, enabling the two ends of the inner channel die to penetrate out of the holes, and then carrying out sealing seamless bonding on the two ends of the inner channel die and the isostatic pressing die. The invention provides an isobaric forming method for machining of an internal channel of a workpiece with a homogeneous material or solid powder as a base material.

The utility model provides a low pressure forming die of flow guide pipe relates to metal atomization powder making technical field. Including base, the top of base is inserted with forming insert piece, the top around forming insert piece is provided with male die lining, is provided with fixed outer sleeve on the outside of male die lining and base, is embedded with top cover on fixed outer sleeve and male die lining, and forming insert piece, base, male die lining and top cover form the loading area. This forming die has reduced the production period of flow guide pipe, and the shortest 2 hours complete flow guide pipe finished product's processing, has reduced the production cost of flow guide pipe, and the production cost is not more than 10% of isostatic pressure forming process cost, has realized light weight, has reduced equipment investment cost with the middle pressure, low pressure forming process, and in the case of lacking the middle pressure, low pressure mechanical equipment, also can realize stable production with manual ramming, has high mobility and practicality, and the flow guide pipe finished product of batch production meets the production demand of metal atomization powder completely through production application.