13results about How to "Small shrinkage deformation" patented technology

The invention belongs to the technical field of precise functional ceramic parts, and particularly relates to multilayer ceramic for an electrostatic chuck and a preparation method of the multilayer ceramic. According to the preparation method of the multilayer ceramic, a ceramic biscuit is formed in a water-based gel tape casting mode, and then the compact aluminum oxide multilayer co-fired ceramic is prepared through the steps of cross-linking curing, lamination, degreasing, sintering and the like. According to the method, the shrinkage rate of the ceramic biscuit in the curing process is reduced by optimizing the components of the ceramic slurry, the abdicating space corresponding to the electrode structure is machined in advance, and the space for compensating the shrinkage of the ceramic in the sintering process is machined in the ceramic substrate in advance by adopting the laser stealth cutting process; the deformation problems of warping, bulging and the like in the multi-layer ceramic sintering process are solved, and then the electrostatic chuck which is high in flatness and uniform in electrode layer distribution is prepared.

The utility model discloses a split insert exhaust shrink-proof mechanism which comprises a fixed mold assembly, a movable mold assembly and an ejection assembly, the fixed mold assembly is arranged above the movable mold assembly, and the ejection assembly is installed below the movable mold assembly. By arranging the first third-order sliding block insert core in the first sliding block body and arranging the second third-order sliding block insert core in the second sliding block body, the first third-order sliding block insert core and the second third-order sliding block insert core can be spliced and matched during mold closing, so that the rear ends of the first heating insert and the second heating insert can be connected to be in contact with a heating rod, and the forming temperature of the sliding block is provided; the first exhaust funnel insert and the second exhaust funnel insert are arranged at the thick position of the product, exhaust grooves are formed in the two sides of the first exhaust funnel insert and the two sides of the second exhaust funnel insert, gas in a closed cavity is effectively exhausted, the defects of burn, insufficient filling and the like are overcome, and then the first accurate positioning insert achieves accurate positioning; and the heating insert I, the heating insert II, the exhaust funnel insert I and the exhaust funnel insert II are precisely positioned through the hanging table, so that the practicability is improved.

The application discloses a die casting machine multi-process parameter cooperative control system and method, and relates to the technical field of casting equipment control. The system, when the mold is in a mold thin state, first completes mold thickness cooperative initialization, then cooperatively controls mold thickness and mold clamping force parameters based on the result to determine the minimum safe mold clamping force; when the mold is in a mold thin state, the mold thickness change rate under the minimum safe mold clamping force is monitored in real time, and progressive cooperative control of the mold thickness is performed; when the mold is in a mold thick state, the mold thickness and pressure parameters are cooperatively controlled according to the progressive cooperative control result to determine the optimal mold clamping force peak value; when the mold is in a mold thick state, fluctuation data of the casting forming process under the optimal mold clamping force peak value are collected, and the cooperative matching degree of the mold thickness and the fluctuation data is quantified, so that full-process multi-process parameter dynamic cooperation from mold closing initialization to forming process verification is realized.

The invention discloses high-crack-resistance bridge expansion joint anchoring area concrete as well as a preparation method and application thereof. The method comprises the following steps: weighing the following raw materials in parts by weight: 650 to 660 parts of cement, 200 to 210 parts of fly ash, 100 to 110 parts of slag powder, 100 to 110 parts of a high-activity internal curing agent, 500 to 550 parts of sand, 500 to 550 parts of stone, 18 to 20 parts of rubber powder, 50 to 60 parts of modified rubber particles, 1 to 1.2 parts of a water reducing agent, 60 to 70 parts of steel fibers, 8 to 9 parts of modified PAN fibers and 230 to 240 parts of water; cement, fly ash, slag powder, a high-activity internal curing agent, sand, stone, rubber powder, modified rubber particles, a water reducing agent and water are mixed and stirred, and a concrete mixture is obtained; and adding the steel fibers and the modified PAN fibers into the concrete mixture, and continuously stirring uniformly to obtain the high-crack-resistance bridge expansion joint anchoring area concrete. The diatomite-rice hull ash after high-temperature calcination is adopted as the high-activity internal curing agent, the modified rubber particles and the modified PAN fibers of the concrete, so that the problems that the concrete in the anchoring area of the expansion joint is easy to crack and damage, poor in durability and the like are well solved.

The present invention belongs to the technical field related to the forming of complex curvature sheet materials, and discloses a curved surface forming processing line layout and processing strain calculation method and application. The method includes: S1 sets the initial processing path, constructs a finite element model of the target surface, and solves the required strain value of any point on the initial processing path; S2 fits the initial processing path to obtain a straight processing path, and obtains the strain value of any point on the straight processing path; S3 applies the strain value of any point to the initial shape to be processed as a predicted shape, calculates the deviation between the predicted shape and the target surface, and when the deviation is less than the preset deviation threshold, outputs the current straight processing path and strain value, otherwise, superimposes the deviation with the target surface to obtain a new target surface and keeps the initial processing path to return to S1 until the preset deviation threshold is met. Through the present invention, the problem that the strain value cannot be obtained intelligently and finely in the processing technology of complex curvature sheet materials is solved.

The invention relates to the field of fabric processing, and particularly discloses a processing method of an antibacterial garment fabric, which comprises the following steps: S1, by taking polyester chips as a matrix and water-soluble polyester as a pore-foaming agent, carrying out melt blending spinning and hot stretching setting, and weaving into a fabric gray fabric; s2, the gray fabric is wound around a center cylinder, and a gray fabric roll is obtained. And S3, placing the gray fabric roll in a hydrolysis device to hydrolyze ester bonds on the surfaces of fibers and dissolve the pore-foaming agent. And S4, washing the gray fabric roll with water, and placing the gray fabric roll in a rolling device to remove excessive moisture. S5, taking a cationic organic antibacterial agent as a first antibacterial agent, immersing the gray fabric roll into an antibacterial agent aqueous solution containing an anionic penetrant, and carrying out vacuum impregnation to enable the liquid medicine to permeate into the pore channels. And S6, pre-drying the gray fabric roll at 80-100 DEG C, spraying a cross-linking agent, baking at 160-180 DEG C, sealing an antibacterial agent, spraying a humidity response type intelligent polymer coating adhesive containing a natural broad-spectrum antibacterial agent, and drying at low temperature to obtain the porous functional membrane. The processing method of the antibacterial garment fabric has the beneficial effect that the antibacterial timeliness and durability are good.

The invention relates to the technical field of metal 3D printing, and discloses a grafting printing method for a semi-square-shaped structure in order to solve the technical problems that a working face of the semi-square-shaped structure is prone to damage, and a conventional mode is difficult to repair, high in cost, long in period and low in percent of pass. The fixing tool comprises a left blocking plate and a right blocking plate which are used for blocking the left side and the right side of the half-mouth character respectively, and the left blocking plate and the right blocking plate are fixedly connected with the shape follow-up ribs on the two sides of the half-mouth character through fixing bolts respectively. A middle blocking plate is further arranged, and the middle blocking plate is fixedly connected with the shape follow-up ribs in the middle of the half-mouth character through fixing bolts; blocking plate bottom feet are arranged at the bottoms of the left blocking plate, the right blocking plate and the middle blocking plate, and bolt holes used for being fixedly connected with the base plate are formed in the blocking plate bottom feet. The device has the beneficial effects of saving powder, reducing the cost, simplifying the cleaning process and enhancing the structural strength.

The present invention provides a method for continuously preparing titanium and titanium alloy wire materials with a short process, which relates to the technical field of preparing titanium and titanium alloy wire materials. The preparation method includes powder preparation, slurry preparation, wire blank forming, wire blank drying, wire blank coating, degreasing sintering, cold drawing and post-treatment carried out in sequence. Among them, the titanium and titanium alloy extrusion slurry is poured into the slurry tank of a screw extruder, and an ultraviolet light source or a heat source is equipped at the die opening of the screw extruder. The slurry is extruded through the die opening and in-situ solidified into a wire blank under the action of the light source or the heat source. By matching continuous production equipment with the technological processes of screw extrusion molding, degreasing sintering and cold drawing, the present invention avoids the high-temperature melting process of the traditional casting-drawing process and the complex processes of multi-pass hot rolling-drawing, realizes the short-process continuous and controllable preparation of titanium and titanium alloy wire materials, has high flexibility in the design of its composition and diameter, strong stability, wide applicability, low cost and excellent performance, and is very suitable for large-scale industrial production.

The application relates to the technical field of molecular sieves, and particularly discloses a molecular sieve for a natural gas drying device and a preparation process thereof. The raw material of the molecular sieve comprises the following components in parts by weight: 50.0-50.8 parts of molecular sieve raw powder, 20.0-20.4 parts of attapulgite, 12-16 parts of phosphorous slag, 4.9-5.1 parts of a binder, 1.4-1.6 parts of a first filling powder and 9.5-9.7 parts of a second filling powder; the first filling powder comprises halloysite nanotubes. The application reduces the shrinkage deformation of the prefabricated pellets in the high-temperature activation process, improves the anti-pulverization performance of the molecular sieve, reduces the influence of the pulverization phenomenon on the service life of the molecular sieve, and is beneficial to the long-term use of the molecular sieve in the natural gas drying device.

The utility model relates to a tower type supporting tool for folding an offshore wind power jacket foundation. The tower type supporting tool comprises a saddle, a platform steel plate, an upper supporting mechanism, a steel plate box and a lower supporting mechanism. The platform steel plate is correspondingly and fixedly connected to the top end of the upper supporting mechanism; the saddle seat is correspondingly and fixedly connected to the upper end surface of the platform steel plate; the lower supporting mechanism is correspondingly and coaxially arranged below the upper supporting mechanism, and the bottom end of the upper supporting mechanism and the top end of the lower supporting mechanism are fixedly connected through a steel plate box. According to the utility model, the fragmented total combination manufacturing of the jacket is realized, the number of temporary supports is reduced, the jacket is safer and more efficient when being folded, and the shrinkage deformation of the jacket main body structure caused by folding welding is effectively inhibited.

The utility model discloses a tool for reducing welding deformation of a truss, which belongs to the technical field of steel structure engineering construction and comprises a base plate and a jack, a steel pipe is fixedly mounted at the top end of the base plate, a partition plate is fixedly mounted on the inner wall of the steel pipe, and the interior of the steel pipe is divided into a placing area and an adjusting area by the partition plate. A plurality of sliding holes are formed in the outer side of the steel pipe, a supporting shaft is rotationally installed between the two sides of the inner wall of each sliding hole, a supporting plate and a push plate are symmetrically and fixedly installed on the outer side of each supporting shaft, an adjusting assembly is installed at one end of each push plate, and the jacks are movably placed in the containing areas and movably connected with the top ends of the partition plates. The device is simple in structure, easy and convenient to manufacture and convenient to mount and dismount, after the device is used, shrinkage deformation of the steel structure truss in the welding process is reduced, the straightening workload after welding is reduced, and the geometric dimension and the appearance quality of the steel structure truss are guaranteed.

The invention discloses a large 3D printing closed cavity thin-wall part anti-deformation welding tool and method.The tool comprises a top-layer circular ring, a middle-layer circular ring and a base, S1, a thin-wall cavity part model is subjected to support adding and blank allowance supplementing, and a closed cavity structure is provided with a window used for removing supports; s2, preparing raw materials; s3, equipment is started, and 3D printing of the thin-wall cavity part is carried out; s4, the thin-wall cavity part obtained after 3D printing is subjected to solution treatment; through 3D printing, production of the annular thin-wall part with the closed inner cavity is achieved, and the weight of the part is greatly reduced; the designed welding tool is matched with the inner wall of the part in shape, the inner wall is fixed, and welding deformation is prevented; according to the designed double-person symmetrical back welding method, the heat input amount is controlled to be distributed in the radial direction of the annular thin-wall part, and therefore shrinkage deformation caused by welding thermal stress is reduced; the problem that a component of a large closed cavity structure manufactured through a single 3D printing process cannot be formed through a conventional method that a support is added and then removed is solved.

The invention discloses a tile waterproof adhesive material for building walls, and relates to the technical field of building materials. The tile waterproof adhesive material disclosed by the invention is composed of the following raw materials in parts by weight: 30-35 parts of P.O42.5 cement, 25-30 parts of quartz powder, 25-30 parts of river sand, 6-12 parts of redispersible latex powder, 3-6 parts of silane-modified polyurethane resin, 0-8 parts of reinforcing fiber, 0-0.3 parts of hydrophobic modified polyacrylate ammonium salt dispersant, 0.2-0.3 parts of water repellent, 0.2-0.3 parts of water reducer and 0.2-3 parts of cellulose ether. The tile waterproof adhesive material prepared by the invention has good bonding, waterproofing, corrosion resistance, aging resistance and high and low temperature resistance, is non-toxic and harmless, and can be used as a waterproof coating and a tile adhesive; the shrinkage rate of the adhesive material is small, and the difference between the early and late shrinkage rates is small, which ensures long-term high bonding strength, reduces costs, and prolongs the service life of the building wall.