47results about How to "Simplified molding steps" patented technology

A zeolite suspension contains MEL-type zeolite nanocrystals as a principal component. A method for the production of MEL-type zeolite nanocrystals includes the steps of aging a synthesized solution comprising TEOS, TBAOH, water and alcohol and subjecting the aged solution to hydrothermal crystallization treatment at a predetermined temperature. A method for the production of a zeolite suspension includes the steps of aging a synthesized solution comprising TEOS, TBAOH, water and alcohol, subjecting the aged solution to hydrothermal crystallization treatment to produce MEL-type zeolite nanocrystals and mixing a composition having a surfactant dissolved in at least one organic solvent or a mixed solvent of alcohol-based organic solvents, amide-based organic solvents and ketone-based organic solvents with a zeolite nano-crystal suspension containing the MEL-type zeolite nanocrystals to produce a zeolite suspension.

Disclosed herein is a method for manufacturing an insulated gate field effect transistor, the method including the steps of: (a) preparing a base that includes source/drain regions, a channel forming region, a gate insulating film formed on the channel forming region, an insulating layer covering the source/drain regions, and a gate electrode formation opening provided in a partial portion of the insulating layer above the channel forming region; (b) forming a gate electrode by burying a conductive material layer in the gate electrode formation opening; (c) removing the insulating layer; and (d) depositing a first interlayer insulating layer and a second interlayer insulating layer sequentially across an entire surface, wherein in the step (d), the first interlayer insulating layer is deposited in a deposition atmosphere containing no oxygen atom.

The invention relates to a composite material forming technology and specifically relates to a high-precision forming mold and method for thickly-laid composite material boxes. The high-precision forming mold for thickly-laid composite material boxes is designed in the present invention and comprises a box bottom female die (1), a box body sidewall pressure transfer block (2), a knockout plate (3), a box sidewall female die (4), a male die (5) and a bottom plate (6). On the basis of the high-precision forming mold for thickly-laid composite material boxes, box prepreg layers of a composite material are laid one by one on the male die (5); every two to three prepreg layers are vacuumized and pre-compacted, and a plurality of times of vacuumizing and pre-compacting are carried out until the prepregs are completely fitted with the die; subsequently, more than three times of pre-pressing by using a press are carried out, followed by a process of opening the mold to supplement materials and shaping, and hot press molding. The accuracy of inner and outer molded surfaces of a composite material box formed by using the mold and the method of the present invention can be above +/-mm, and therefore, the composite material box can be glued in an aerospace part as a force-bearing part and may meet later assembly requirements.

The invention discloses a 4D deformed reticulated hollowed degradable vascular stent with concave-convex structures on the inner and outer surfaces, a preparation method and a use method thereof. A thermoplastic polymer containing a dynamic covalent bond, a thermosetting polymer containing a functional group capable of further crosslinking or a thermosetting polymer is used as a raw material, theraw material is cut or clipped to form a desired hollowed structure, the material is heated to more than or equal to the transition temperature and then stretched to obtain a reticulated hollowed pattern with concave-convex structures on the inner and outer surfaces, the raw material is rolled into a tubular shape and fixed, then bond exchange of the dynamic covalent bond is activated or the functional group is initiated for crosslinking, molding is finished, and a shape-permanent vascular stent product is obtained. The brand-new method for producing in-vivo stents provided by the invention has the characteristics of simple operation, high molding speed, simple process steps, no need of professional equipment and the like, and the integrated design of once molding of the complex stent shape, rapid manufacturing and 4D self-deformation function is realized.

The invention relates to a flue forming device and a flue forming method using the same, and belongs to the field of building devices. The flue forming device comprises an outer formwork and an inner formwork. The outer formwork comprises a bottom plate; two parallel side plates are arranged on the bottom plate; the side plates are detachably fixed to the bottom plate; two detachable baffles are arranged at the two ends of each side plate; the baffles are hollow frame bodies; cover plates parallel to the bottom plate are arranged on the baffles; and grouting openings penetrating through plate surfaces are formed in the cover plates. The inner formwork is an inflatable column body; after inflation, the column body is in a flue inner wall shape; and the bottom plate, the baffles, the cover plates and the column body together define a flue cavity. The inflatable column body is designed to serve as the inner formwork, and the inner formwork can be taken down from the inner wall of a flue conveniently after forming of the flue. The invention further provides the flue forming method using the flue forming device. The flue forming method comprises the steps of outer formwork splicing, inner formwork inflation, bottom layer slurry injection, fully filling of slurry, and inner formwork and outer formwork dismounting.

This invention provides a semiconductor device manufacturing method including forming a T type gate electrode having a wide region in an upper portion, the method including steps of: forming rectangular gate polysilicon; forming a nitride film covering the polysilicon; forming an oxide film thick on the nitride film; etching back the oxide film to expose the nitride film; etching the exposed nitride film, exposing the gate polysilicon, and forming a space; forming undoped polysilicon burying the space; etching back the undoped polysilicon to form a wide portion in the upper portion of the gate polysilicon; and etching the oxide film and the nitride film; siliciding the wide undoped silicon to form titanium suicide (or cobalt silicide). This manufacturing method makes it possible to easily form the T type gate electrode with good yield.

The invention discloses a forming die for automobile wrought aluminum steering joints. The forming die comprises an upper die base and a lower die base, wherein the lower die base is of a hollow structure; a mounting block is vertically arranged inside the lower die base; the top part of the mounting block and the top part of the lower die base are positioned on the same horizontal plane; a sunken first mounting groove is formed in the top part of the mounting block; a sunken second mounting groove is formed in the bottom inner wall of the first mounting groove; the side wall of the second mounting groove is a sector-shaped cross section; four first fixed rods which are annularly distributed are arranged on the bottom inner wall of the second mounting groove; a third mounting groove is formed in the bottom inner wall of the second mounting groove; and the third mounting groove is positioned among the four first fixed rods. The forming die has a better buffer effect; moreover, the damage to the upper die base or the lower die base caused by instant impact force is avoided, and the service life of the upper die base or the lower die base is prolonged; in addition, the formation steps of the steering joints are simple, and operation of working personnel is facilitated.

The invention discloses a cylinder shaping mechanism, which is applicable to form a cylinder by extruding a metal sheet. The cylinder shaping mechanism comprises a frame, a driving mechanism, a convex die, a pair of concave dies and a pair of pushing mechanisms, wherein the cross section of the convex die is the same as that of the cylinder body, and the convex die is fixed on the frame; the pushing mechanism comprises a first connecting rod, a second connecting rod and a swing arm; one end of the first connecting rod is pivoted with one end of the swing arm, the swing arm is arranged in a horizontal manner and the middle part of the swing arm is pivoted to the frame; the other end of the swing arm is pivoted with one end of the second connecting rod, the concave dies are arranged at both sides of the convex die and provided with pivoting parts and rotating parts; the pivoting parts are pivoted on the frame and the rotating part are pivoted on the other end of the second connecting rod; the pushing mechanism can be driven by the driving mechanism simultaneously, so that the convex die can be coated by two concave dies; and therefore, the cylinder body is formed by extruding the metal sheet. By adopting the cylinder shaping mechanism, the shaping steps can be simplified and the producing efficiency is improved.

The invention belongs to the technical field of mechanical engineering, and relates to a large-scale tilting casting machine. The large tilting casting machine comprises a base, a driving device, a transmission device, a tilting device and a mold positioning device; the driving device is connected with the transmission device, the transmission device is fixedly connected with the tilting device todrive the tilting device to tilt, and the tilting device is arranged on the base; the tilting device comprises a liquid metal container which is fixedly connected, and the mold positioning device isconnected with the tilting device; the mold positioning device makes an upper mold and a lower mold accurately positioned and coaxial with an outlet of the liquid metal container. By rotating a rotating body of the casting machine, metal liquid automatically flows into the molds so that the molds can be fully cooled and formed, the forming step is simplified, the operation is simple, and the safety is achieved.

The invention relates to an electrostatic adsorption type upright cellucotton molding method which comprises the following steps: after opening staple fiber, putting the opened staple fiber in an electrostatic space formed between an upper electrostatic plate and a lower electrostatic plate, drawing by using an electrostatic principle to form an upright structure, heating the stapler fiber forming an upright structure through drawing to be bonded into flake-like upright cellucotton, and taking out the flake-like upright cellucotton from the electrostatic space formed between the upper electrostatic plate and the lower electrostatic plate. Therefore, the method has the advantages that the molding step is simple, the production cost is low, and the material waste is not caused.

The invention discloses a production process of a cotton soft high-elasticity paper diaper, and relates to the field of hygienic products. According to the production process of the soft cotton high-elasticity paper diaper, a surface layer, an absorption core layer and a leakage-proof bottom layer are included, the leakage-proof bottom layer is formed by compounding a PE breathable microporous film and melt-blown cloth, a surface layer base material is chitin fiber spunlace cloth, and an absorption core layer base material is any one of polypropylene fiber, polyester or chinlon non-woven fabric. The production process comprises the four steps of finishing liquid preparation, surface layer forming, absorption core preparation and composite forming. According to the production process of the soft cotton high-elasticity paper diaper, the paper diaper is divided into the surface layer, the absorption core layer and the leakage-proof bottom layer, the surface layer and the absorption core layer are similar in step and can be processed at the same time, the leakage-proof bottom layer is formed by compounding two materials, the overall forming step is simplified. The raw materials of the absorbing core layer are processed by a two-stage homogenizing process, so that the absorbing capacity and the water locking capacity of the paper diaper are improved, and popularization and application are facilitated.

A ceramic electronic component and manufacturing method are capable of easily forming a plating electrode on any portion of a surface of a ceramic body. The ceramic electronic component includes a ceramic body containing a metal oxide, a modified layer formed on a surface layer portion of the ceramic body, on which a portion of the metal oxide is melted and solidified, and an electrode comprising a plated metal formed on the modified layer. In the modified layer, at least one of metal elements constituting the metal oxide is segregated. Plated metal is likely to be deposited due to segregation of the metal elements.

The invention provides a process for producing a negative-charging electrophotographic photosensitive member which can improve the adherence between a first layer and a second layer without lowering the effect of lessening image defects and realize a reduction in overall costs, a negative-charging electrophotographic photosensitive member produced by the process, and an electrophotographic apparatus. In the process for producing a negative-charging electrophotographic photosensitive member, a first layer is deposited on a substarte, at least the vertexes of protuberances are removed, the substrate with the first layer deposited theron is placed in a film forming furnace, the first layer surface is plasma-treated with a gas containing at least a Group 13 element in the periodic table and a dilution gas composed of at least one selected from hydrogen, argon and helium, and a layer formed of a non-single-crystal material is deposited as the second layer on the first layer.