164results about How to "Improve molding stability" patented technology

The invention discloses a roadbed slop vertical vibrating compacting device which comprises a vertical vibrating mechanism aslant connected to the side wall of a working device, wherein the vertical vibrating mechanism comprises a vibrating box body, a rotating shaft I and a rotating shaft II which are mutually parallel are rotatably connected into the vibrating box body, a synchronizing wheel I is arranged on the rotating shaft I, a synchronizing gear II meshed with the synchronizing gear I is arranged on the rotating shaft II, an eccentric block I is arranged on the rotating shaft I, an eccentric block II is arranged on the rotating shaft II, a tamping plate supporting against a roadbed slope is connected to a bottom plate of the vibrating box body, and a drive device used for driving the rotating shaft I or rotating shaft II to rotate is arranged on the tamping plate. The roadbed slop vertical vibrating compacting device is capable of carrying out effective vibrating compaction on the roadbed slope, and is good in use effect, easy to operate and convenient to popularize and use.

The present invention relates to one kind of polyamide/acrylonitrile-butadiene-styrene copolymer alloy and its preparation process. The polyamide/acrylonitrile-butadiene-styrene copolymer alloy is prepared with polyamide 35-60 wt%, acrylonitrile-butadiene-styrene copolymer 8-50 wt%, compatilizer 2-10 wt%, flexibilizer 2-15 wt%, antioxidant stabilizer 0.2-2 wt%, lubricant 0.3-3 wt%, and nucleator 0.1-2 wt%. The preparation process includes weighing the materials based on the weight proportion, mixing in a high speed mixer for 1-4 min, mixing, melting and extruding in a double screw extruder, and pelletizing. The polyamide/acrylonitrile-butadiene-styrene copolymer alloy has simple processing and molding process and high performance.

The invention discloses a vertical annular welding tool. The vertical annular welding tool comprises a rotatable platform and a hollow upright column, wherein the hollow upright column is perpendicular to the rotatable platform and sleeves the rotatable platform via a clearance; a gas guiding ring, a conductive ring and a ground wire grounding copper ring sleeve the upright column; a gas circuit, an electric control circuit and a welding ground wire are arranged in a hollow cavity of the upright column; a workpiece positioning mechanism is fixed on the upper portion of the upright column; and a wire feeding machine and a welding gun mechanism are fixed on the rotatable platform. Rotating power is provided by using a speed reducer; circuit transmission is carried out by using the conductive ring; and gas is turned on, turned off and changed over via the gas guiding ring, the welding gun can be adjusted multi-dimensionally in space, namely, the welding gun can be adjusted in the up-down direction and the left-right direction at an angle, annular welding between tubes, annular welding between a tube and a flange and annular welding between a tube and a plane can be performed, the product differentiation switching efficiency and the welding quality are improved, the welding angle and the welding speed can be freely adjusted, annular welding can be performed rotatably without limitation, workpieces do not need to rotate, and the time can be greatly saved. The vertical annular welding tool is suitable for annular welding between the tubes, annular welding between the tube and the flange and annular welding between the tube and the plane, or is suitable for welding an arc.

Process and apparatus for continuously and permanently shaping a plate in plastic material according to an undulated profile. The apparatus includes a guide and positioning surface of the plate; a moulding and transferral wheel, peripherally shaped according to a plurality of seats, suitable for reproducing a continuous shaped profile; and a positioning, advancement and maintenance assembly in the form of a plate, peripheral with respect to the moulding wheel, of the mobile type, respectively; counter-clockwise in synchronization with the moulding and return wheel in a position independent of the moulding wheel. The assembly includes a pre-form presser, upstream of the surface involved in the shaping, set apart by at least one first stabilization and cooling presser, a moulding presser, interposed between the pre-form presser and a cooling presser; and a possible blade for detaching the plate from the seats.

The invention provides a metal powder core type flux-cored wire for additive manufacturing. The metal powder core type flux-cored wire for additive manufacturing comprises carbon steel outer skin anda flux core arranged in the carbon steel outer skin. The flux core comprises the following components in percentage by mass based on total mass: 0.8-1.2% of rutile, 2-3.2% of sodium fluoride, 1-2% offerrotitanium, 0.2-0.5% of ferroboron, 0.4-0.8% of magnesium powder, 2-4% of 75# atomized ferrosilicon, 0.3-0.7% of a silicon-zirconium alloy, 3-3.8% of ferromolybdenum, 25-30% of nickel powder, 0.4-1.1% of anhydrous feldspar, 0.2-0.6% of rare earth fluoride, 2.2-3.1% of electrolytic manganese and the balance iron powder. According to the flux-cored wire, the oxygen content of a weld joint is reduced by way of combined deoxygenation of Mn-Mg-Si-Ti-Zr, and meanwhile, by adding a proper amount of minerals, the weld joint forming and arc stability is improved; by adding the iron powder, the deposition efficiency of the flux-cored wire is improved; by adding the rare earth alloy, the S content in weld joint metal is reduced and the shape of the occluded foreign substances is changed, so that the low-temperature toughness is improved, and therefore, the flux-cored wire is stable in mechanical property of melted metal, good in crack resistance and excellent in low-temperature toughness at 50DEG C below zero.

The present invention provides a preparation method of a clove extract for base oil of a flavor capsule. The preparation method of the clove extract includes: soaking clove buds in 30-95% ethanol solution; heating the solution to reflux at a temperature of 30 to 60 DEG C, and then cooling and filtering the solution; collecting the filtrate and concentrating the filtrate under vacuum for removing the extraction solvent to obtain a clove extractum; adding octyl and decyl glycerate and Span 60, and treating the mixture by ultrasound at a frequency of 20 to 40 kHz under 30 to 60 DEG C for 0.5 to 2hours; and performing filtration to remove impurities and insolubles, and collecting the filtrate so as to obtain the clove extract. The invention provides a simple extraction method, and the obtained clove extract can be directly added into the base oil of the flavor capsule and used to prepare flavor capsules for cigarettes, and the forming stability of the clove extract is good. The flavor capsule can be added into filter tips to make cigarettes. A smoke panel test shows that the aroma of clove is strong and the aroma is rich and pure.

A polycarbonate/polyethylene terephthalate composite resin composition is provided, which contains a resin component of 100 parts by weight and contains a phosphorus thermal stabilizer of 0.01 to 0.5 parts by weight and/or a hindered phenol thermal stabilizer of 0.01 to 1 parts by weight, the resin component containing a polycarbonate resin of 95 to 30 weight % and a polyethylene terephthalate resin of 5 to 70 weight %. The polyethylene terephthalate resin contains a deactivated polycondensation catalyst. The polycarbonate/polyethylene terephthalate composite resin composition can be prevented from being deteriorated resulting from being thermally preserved.

The invention relates to the technical field of traditional Chinese medicine products with an incense function, in particular to an incense flake as well as a preparation method and a using method thereof. The incense flake is prepared from raw materials in parts by weight as follows: 1-10 parts of flos caryophyllata, 1-10 parts of pericarpium zanthoxyli, 1-10 parts of radix angelicae, 1-10 partsof flos magnoliae, 1-10 parts of borneol, 1-10 parts of folium artemisiae argyi, 1-10 parts of herba eupatorii, 1-10 parts of ramulus cinnamomi, 1-10 parts of fennel, 1-10 parts of rhizoma acori graminei, 1-10 parts of rhizoma atractylodis, 1-10 parts of herba menthae and 1-10 parts of agastache rugosus. The raw materials of the incense flake are traditional Chinese medicines containing volatile ingredients, are natural and harmless and have mutual compounding effect, so that the functions of the incense flake are improved, the condition of incompatibility of medicinal effects of the traditional Chinese medicines is prevented, and the incense flake has effects of resisting bacteria, cleaning air, repelling mosquitoes, relieving pressure and the like, has faint scent odor and is suitable for most environments for infants, old people, adults and the like.

The purpose of the present invention is to provide: an intermediate substrate that has excellent handleability and followability for complex shapes, and also achieves good yield, excellent mechanical properties and low variation thereof, as well as excellent dimensional stability as a result of strength-reducing moulding defects, such as wrinkles and voids, occurring less readily when used in a fibre-reinforced plastic, even with low-pressure moulding; and a method for manufacturing a fibre-reinforced plastic, the intermediate substrate being used in said method. This pre-preg, which has a layer that contains reinforcing fibres impregnated with a resin composition, is characterised by: being a notched pre-preg; the rate of impregnation by the resin composition in the pre-preg being within a prescribed range; comprising reinforcing fibres, at least a portion of which is of a prescribed fibre length due to a plurality of notches; and having a reinforcing-fibre volume content Vf that is within a prescribed range.

The invention discloses automobile pipe port forming equipment and a port forking method thereof. The key point of the technical scheme is that the automobile pipe port forming equipment comprises a rack, a die frame, a forming die and a top pressure mechanism, wherein the die frame is fixedly mounted on the rack; a die mounting cavity for mounting the forming die is formed in the die frame; the forming die comprises an upper die and a lower die which are correspondingly arranged up and down, a lifting driving mechanism for driving the upper die to do lifting motion and a mandrel; the mandrel comprises a bulging block and a step shaft; the diameter of a small-diameter section of the step shaft is less than the inner diameter of a reducing section of an automobile pipe; the diameter of a large-diameter section of the step shaft corresponds to the inner diameter of a pipe body of the automobile pipe; the bulging block is a cylinder; one end of the bulging block is fixedly connected with the end surface of the large-diameter section of the mandrel; and the top pressure mechanism comprises a fixed ejector block and a movable ejector block which are relatively arranged at two ends of a die cavity of the forming die, and a top pressure driving assembly for driving the movable ejector block to do relative motion to the fixed ejector block. The problems of low efficiency and relatively high cost of the existing automobile pipe during pipe end forming machining are solved.

A multi-ratio gearbox housing for a vehicle is made of light metal material and includes a first bearing seat having a cylindrical inner surface, and a reinforcement member having a first cylindrical inner surface surrounding the first bearing seat for reducing thermal radial expansion of the first bearing seat, the reinforcement member being of a material the coefficient of thermal expansion of which is less than the coefficient of thermal expansion of the light metal material of the housing. The reinforcing member is a cast-in insert arranged in the housing, and a radial distance between the first cylindrical inner surface and the cylindrical inner surface of the first bearing seat is substantially constant along circumferential lines of the first bearing seat, facilitating improved form stability of the cylindrical inner surface of the first bearing seat over the temperature operating range of the housing.

The invention discloses a liquid crystal polyester and its molded composition and use. The liquid crystal polyester comprises repeated structural units [I]-[IV]. A dynamic thermomechanical analysis (DMA) test proves that the liquid crystal polyester has a storage modulus release rate delta G greater than or equal to 95.0% and less than or equal to 99.4% defined in the formula (1) of delta G=[G(-50)-G(melting point)]/G(-50)*100%. The liquid crystal polyester has a storage modulus release rate delta G greater than or equal to 95.0% and less than or equal to 99.4%. The liquid crystal polyester and the liquid crystal polyester molded composition have good fluidity and excellent melting characteristics. A small thin wall molded product has high stability and is especially suitable for a thin wall electronic product.

The invention provides a hot-rolled flat plate for X80 high-wear-resistant hot-bending elbows and a production method of the hot-rolled flat plate. The hot-rolled flat plate comprises the following raw components by weight: 0.16% to 0.23% of C, 0.25 % to 0.45% of Si, 1.30% to 1.65% of Mn, 0.008% to 0.025% of Ti, 0.015% to 0.06% of Al, 0 to 0.020% of P, 0 to 0.004% of S, 0.0005% to 0.0010% of B, and the balance Fe and unavoidable impurities. According to the production method, rolling adopts the controlled rolling and controlled cooling technology, the slab heating temperature is 1200 to 1280 DEG C, the rough rolling temperature is 1080 to 1200 DEG C, the finish rolling temperature is 880 to 1050 DEG C, the cooling speed after rolling is 25 to 40 DEG C/s, the finish cooling temperature is 300 to 375 DEG C, and then air cooling is carried out. Due to adoption of the hot-rolled flat plate and the production method, the production cost is lowered by about 15%; and the steel plate is easy to mold at high temperature, and high in hardness at room temperature, and has good molding stability and abrasion resistance.

The invention relates to a mold pressing device. The mold pressing device comprises a base, a support base, a guide rod and a mold pressing module; the base is provided with a worktable; a support part is formed at the top of the support base; the mold pressing module comprises a first mold base, a second mold base and a driving piece; the first mold base is arranged on the worktable; the driving piece comprises multiple driving parts; and the multiple driving parts are arranged at intervals, and are connected to the second mold base. The base is additionally provided with a guide block; the guide block is opposite and parallel to the guide rod; two guide grooves are formed in the guide block; a slide block is convexly formed on the second mold base; two slide bars are convexly arranged on the slide block; and the two slide bars are slidingly arranged in the two guide grooves. The mold pressing device can enable workpieces to be stably stressed; and the second mold base is not liable to shake.

The invention belongs to the technical field of macromolecular materials and particularly relates to a bellows material and a production method thereof; the bellows material comprises, by total weight of 100%, 68-81% of polycaprolactam, 10-15% of halogen-free flame retardant, 5-10% of a plasticizer, 0.2-0.4% of a crosslinking agent, 2-5% of a toughener, 0.3-0.6% of a thermostabilizer, and 0.2-2% of other aids. Through modifying effects of the plasticizer, the halogen-free flame retardant, the crosslinking agent, the toughener and the thermostabilizer and the synergy of the components within the specific content range, the bellows material provided herein is given excellent flexibility, flame retardancy and thermostability, as well as excellent forming stability, and has significantly better effects than those of the prior art.

The invention relates to a full-automatic composite hose making machine. The full-automatic composite hose making machine comprises a core rod driving mechanism, a core rod mechanism, a supporting mechanism, an inner steel wire winding mechanism, an outer steel wire winding mechanism and a cloth film winding mechanism, wherein the core rod driving mechanism comprises a mounting base, and an innersteel wire winding mechanism mounting plate is fixedly arranged on the front portion of the mounting base; the core rod mechanism is arranged on the front side of the mounting base, the core rod mechanism comprises a core rod body in transmission connection with the core rod driving mechanism, the front end of the core rod body is fixedly connected with a tube removing core rod, and the tube removing core rod is provided with a tube removing thread; the supporting mechanism is arranged below the front side of the core rod body and comprises a bottom support, and an outer steel wire winding mechanism mounting plate is movably mounted on the bottom support; the inner steel wire winding mechanism is detachably arranged on the inner steel wire winding mechanism mounting plate; the outer steelwire winding mechanism is fixedly arranged on the outer steel wire winding mechanism mounting plate; and the cloth film winding mechanism is rotationally arranged at the rear end of the core rod body.According to the full-automatic composite hose making machine, the composite hose can be continuously prepared, and the forming stability of the composite hose can be effectively improved.

The invention discloses a method for manufacturing an X 90 grade pipeline steel large-diameter thick-wall spiral submerged-arc welding pipe. The method comprises the following working procedures: uncoiling, flattening, edge milling, forming, welding, pipe end expanding, X-ray continuous detection, static hydrostatic testing, weld joint and base metal ultrasonic flaw detection, pipe end chamfering, pipe end shooting and finished product inspection; the welding working procedure comprises inside and outside prewelding, finish inside and outside welding; through reasonably selecting welding parameters, a weld joint and base metal can transit smoothly to reduce or eliminate undercut, and the weld joint has excellent mechanical property and ensures obdurability match of the welding pipe and a welded joint; while the pipe end expanding working procedure is carried out, an automatic spiral submerged-arc welding pipe perimeter measuring device is adopted to measure the perimeter in real time, so that real-time measurement and monitoring on the welding pipe perimeter during the forming process are realized, and precise geometric dimensioning of the welding pipe is ensured.

The invention relates to cable production equipment. According to the cable production equipment, three processes, i.e., package material conveying, carbon powder conveying and cable conveying, are mutually independent; the synchronous and ordered control of the three processes is completed by using a CAN (Controller Area Network)open bus control technology; an installation mode of two rolls of rolled material is adopted in a package material supply mechanism to realize the advance in-place placement of a standby package material, and therefore, the time is saved; the application of a crawler-type traction mechanism combined with a servo motor is adopted in a cable forming and traction mechanism so that the cable traction speed is stable, the forming position is accurate, and the traction pull is stable; a packaging and forming mechanism is used for carrying out stable turndown forming on the package material by applying a cylindrical turndown former so that the attractive appearance and the reliability of packaging and forming are ensured; a profile modeling traction wheel mechanism, an appropriate tension mechanism and the control of the servo motor are adopted by a gluing and grinding mechanism and a forming and traction mechanism, so that the advantages of stable forming speed, even forming tension, attractive appearance of gluing and grinding and firmness and reliability in gluing are achieved by the package material. The cable production equipment has the advantages of simple and compact structure, good forming stability and wide application range.

The invention discloses a nylon material for a petroleum lining pipe and a preparing method of the nylon material. The nylon material is prepared from long-carbon-chain nylon resin, nylon 6, a flexibilizer, a compound additive and a wear-resistant additive. It is proved through experiments that the prepared nylon material for the petroleum lining pipe has good high temperature resistance, acid resistance, wear resistance and rebound resilience and excellent forming stability; the petroleum lining pipe prepared from the material is stable in size and excellent in performance, can meet the industrial standard and machining process of the petroleum lining pipe, and can meet the use requirements of the petroleum lining pipe in deep oil well depth, complicated environment and especially strongacidic environment.