7results about How to "Reduce crack phenomenon" patented technology

The invention discloses a composite material production technology, and aims to provide a basalt fiber composite bar production technology which is characterized by comprising the following steps: S1, a preparation stage: preparing a plurality of basalt fibers, a plurality of steel wires, a positioning pipe, a plurality of reinforcing blocks and a resin matrix; s2, a stage of impregnating the resin matrix: sequentially adding an accelerant and a curing agent into the resin matrix, fully stirring to obtain a glue solution, and then coating the basalt fibers and the steel wires with the glue solution by using a tool for 1-11 times; s3, an assembling stage, wherein the reinforcing blocks are assembled and connected through the connecting blocks and the connecting grooves, and then the clamping blocks on the reinforcing blocks are inserted into the clamping grooves in the positioning pipes; s4, a steel wire winding stage; s5, a twisting stage; s6, a fixed forming stage; the device is simple and reasonable in structure, convenient to manufacture, easy and convenient to operate, capable of avoiding defects in the prior art and suitable for application and popularization; the method is suitable for the technical field of composite material production.

This invention discloses an ultrasonic vibration-assisted full-domain transient cladding device and method in the field of surface strengthening technology for components. The cladding chamber is equipped with an inert gas cylinder, an ultrasonic generator, and a vacuum pump on its exterior. Inside the cladding chamber, from top to bottom, are arranged an ultrasonic vibrating head, a perforated graphite felt, coating powder, a workpiece, and a third telescopic motor. The top surface of the workpiece is covered with a layer of coating powder. The perforated graphite felt has through-holes, and an ultrasonic vibrating head extends into one of the holes in the perforated graphite felt. Using air as a carrier, ultrasonic vibration is transmitted to the cladding layer. The workpiece itself does not vibrate, allowing the metal dendrites in the cladding layer to fracture during metal crystallization, promoting the growth of new crystal nuclei and achieving grain refinement. After the cladding layer is formed, the DC power supply is turned off, but the ultrasonic vibrating head continues to operate. The cladding layer of the workpiece impacts the ultrasonic vibrating head, forging the cladding layer and further improving its plasticity and mechanical properties.

The application discloses an erosion-resistant ceramic crucible containing magnesium oxide for smelting of aluminum-lithium alloy and a preparation method thereof, and belongs to the technical field of refractory materials. White corundum, cordierite, Cr2O3, BaF2, CaF2, ZrO2 and TiO2 are mixed to form premix; after the premix, mixed additives, water and grinding balls are mixed and ground, the mixed slurry is obtained through aging; the mixed slurry is poured into a gypsum mold to be dehydrated to obtain a green body, the green body is sequentially subjected to drying treatment and isostatic pressing treatment to obtain a pretreated green body; and the pretreated green body is sequentially subjected to vacuum sintering and plasma spraying to obtain the erosion-resistant ceramic crucible. The erosion-resistant ceramic crucible prepared by the application has good resistance to aluminum-lithium alloy erosion when smelting the aluminum-lithium alloy.

The invention discloses mobile phone display screen substrate laser cutting equipment with low heat influence, and particularly relates to the technical field of display screen machining. By arranging a gas introduction assembly and a cooling unit, after nitrogen is introduced, low-temperature nitrogen flows to a cutting area from the periphery and becomes high-temperature nitrogen after absorbing heat, and the high-temperature nitrogen is cooled to the room temperature; the high-temperature nitrogen rises, flows to the surrounding area, is cooled again and then flows back to the cutting area, the nitrogen forms convection around the cutting area, heat is continuously taken away from the cutting area through the convection nitrogen, and the rapid cooling effect is achieved; the temperature of the display screen substrate is reduced, the risks of thermal deformation and thermal damage are reduced, the thermal stability is improved, and therefore the machining precision is improved, the remaining two cooling rollers alternately reach the bottom position, the heat absorption rollers make contact with the cooling rollers after heat conduction, heat dissipation is guided, alternate use is facilitated, and the heat dissipation efficiency is improved.

The invention discloses a mobile phone display screen substrate laser cutting device with low thermal impact, and specifically relates to the technical field of display screen processing. The invention provides a gas introduction component and a cooling unit. After nitrogen is filled, low-temperature nitrogen flows from the surrounding area to the cutting area, absorbs heat and becomes high-temperature nitrogen. The high-temperature nitrogen rises and flows to the surrounding area, and flows back to the cutting area after being cooled again. Nitrogen forms convection around the cutting area, and the heat is continuously taken away from the cutting area by the convection nitrogen, so as to achieve the effect of rapid cooling. The top surface of the display screen substrate is firstly cooled and cooled in a rolling manner before laser cutting, so as to reduce the temperature of the display screen substrate, reduce the risk of thermal deformation and thermal damage, increase thermal stability, and thus improve processing accuracy. The remaining two cooling rollers alternately reach the bottom position, contact the cooling roller after heat conduction through the heat absorption roller, guide the heat dissipation, facilitate alternating use, and improve heat dissipation efficiency.

The invention discloses a method for electroplating a film layer on IR printing ink, and belongs to the technical field of glass processing. According to the scheme, the baking temperature is increased in the baking link after screen printing of the IR printing ink, and the adhesive force of the IR printing ink and the glass substrate is enhanced; in the electroplating process, an electroplating machine table is heated to 120 DEG C or above, heat preservation is conducted on a product for 10-20 minutes, then a film layer is electroplated on IR printing ink in a constant-temperature heating environment, it is ensured that the IR printing ink and the film layer are fully expanded at the high temperature, accumulation of thermal stress is reduced, the bottom layer of the film layer is made of a material which is good in binding force with the IR printing ink, and therefore the service life of the film layer is prolonged. The adhesive force between the film layer and IR printing ink is improved; and then, the baking temperature of the silk-screen link after electroplating is reduced, so that the baking temperature is closer to the electroplating temperature, the stress effect between the IR ink and the film layer caused by temperature difference is reduced, and the generation of cracks is further reduced. The crack phenomenon of the IR printing ink in the high-temperature baking process is effectively reduced, and the quality and reliability of the product are improved.

The present application discloses a periscope camera module, which includes at least one optical lens, a lens barrel and at least one lens accommodated in the lens barrel, the lens barrel includes a lens barrel body and a support portion, the support portion protrudes from the lens barrel body along a first direction, the support portion includes a first surface and a second surface opposite to each other along a second direction, and an opening connecting the first surface and the second surface along the second direction, the second direction being perpendicular to the first direction; at least one lens seat, at least one optical lens is arranged on at least one lens seat, at least one lens seat includes a receiving groove facing the supporting portion, a gap is provided between the supporting portion and the receiving groove, and at least a part of the supporting portion is spaced between the gap and the opening; and a glue material is at least partially filled in the gap and the opening to fix at least one optical lens to at least one lens seat. Thus, the shrinkage phenomenon of the supporting portion itself is reduced while reducing the problem of stress concentration, effectively avoiding deformation of the lens barrel, and improving the imaging stability of the periscope camera module.