140 results about "Roughcast" patented technology

The invention provides a high-efficiency and environment-friendly sandstone material processing control system, and relates to the technical field of sandstone material processing control, and the system comprises a production demand determination module, a blank raw material determination module, a processing workshop control module, a processing workshop fault evaluation module, an environment-friendly monitoring processing module and a sandstone aggregate online detection module. According to the invention, intelligent control of gravel production is realized, physical online detection of finished aggregate detects particle size and shape of the finished aggregate, chemical online detection of harmful substances chloride and methylene blue in the finished aggregate is realized, the detection efficiency is improved, the labor intensity of testers is reduced, and the production cost is reduced. Online collection, real-time detection, remote analysis and dynamic feedback of the finished aggregate are realized, and the quality control level of the finished aggregate is improved.

The invention relates to a large-scale high-temperature alloy blank casting method capable of controlling the casting size, and belongs to the technical field of high-temperature alloy casting. Measuring a temperature curve of the sand mold after the high-temperature alloy is poured; a process model is created, simulation software is used for carrying out stress deformation simulation, a part model of the casting is created, the simulation result of the part model and the simulation result of the process model are compared, the reduced scale, correction and the machining amount are adjusted in real time, and the process model is obtained; manufacturing a process pattern according to the process model, and producing a sand mold by utilizing the process pattern; creating a sand core model, inputting sand mold temperature curve parameters into simulation software, carrying out sand core deformation stress simulation, measuring sand core deformation stress, and manufacturing a core box according to the sand core model; a core bar is manufactured according to the design, the manufactured core bar is placed in a core box, and a sand core is manufactured; demolding the sand core; combining the sand core with the sand mold to obtain a casting cavity; and molten steel is poured into a casting cavity, and a casting blank is formed after cooling and solidification.

The present disclosure provides a method of manufacturing a hot-stamped part, the method including: forming a blank by cutting a plated steel sheet having a plating layer formed on at least one surface of a base material; and heating the blank in a heating furnace including a plurality of sections having different temperature ranges, wherein the heating of the blank includes: a multistage heating operation of heating the blank in stages; and a soaking operation of soaking the blank, which has been heated in the stages, in a temperature of Ac1 to 910 °C, and a temperature an in the soaking operation and a total heating time bn in the heating of the blank satisfy the following relational expression. 62≤91.81+K−0.022×an−0.23×bn (In the above relational expression, K denotes a material correction coefficient.)

The present disclosure provides a method of manufacturing a hot-stamped part, the method including: forming a blank by cutting a plated steel sheet having a plating layer formed on at least one surface of a base material; and heating the blank in a heating furnace including a plurality of sections having different temperature ranges, wherein the heating of the blank includes: a multistage heating operation of heating the blank in stages; and a soaking operation of soaking the blank, which has been heated in the stages, in a temperature of Ac3 to 910 °C, and a temperature an in the soaking operation and a total heating time bn in the heating of the blank satisfy the following relational expression. 62≤91.81+K−0.022×an−0.23×bn (In the above relational expression, K denotes a material correction coefficient.)

A preparation method of a quartz stone patterned full-body plate includes seven steps of preparing a material, preparing a rough sheet, performing pattern treatment, preparing a pressing plate, baking, polishing and printing. Through matching the main materials with the pigment paste and color powders, especially each of the main materials is a mixture which includes at least three different ingredients, the preparation method improves the naturalness of the color and texture of the plate, making the plate closer to nature. Through matching different particle sizes of granular raw materials with silicon micro-powders in the mixture, the plate is able to obtain a uniform surface spherical effect. Through the cooperation of granular raw materials, silicon micro-powders, the pigment, the silane coupling agent, unsaturated polyester resin and the curing agent, the plate is able to obtain good earth resistant performance, abrasion resistance; is not easy to deform, crack, fade and tarnish; and has good decorative effect.

The invention discloses an environmentally friendly tunnel kiln, comprising a kiln body, a material transport vehicle, a heating device, a denitration device, a heat exchanger, and a desulfurization and dust removal device. A feed port is arranged at one end of the kiln body, and a discharge port is arranged at the other end of the kiln body. A blank area, a preheating area, a combustion area, and a flue gas preheating module area are sequentially arranged in the kiln body from the feed port to the discharge port. A closed door is arranged at the feed port. The blank area, the preheating area, the combustion area, and the flue gas preheating module area are separated by an insulating door. A track is laid on the bottom side of the kiln body, and the material transport vehicle can pass through the kiln body from the feed port to the discharge port along the track. The invention has a simple structure, fully utilizes the exhaust gas generated in the tunnel kiln during the firing process of the blank brick material to preheat the blank brick material, fully utilizes energy, reduces the heating gradient of the blank brick material, saves energy and is environmentally friendly, and slowly heats the blank brick material in the blank area according to the temperature gradient of the flue gas, and its internal structural strength is slowly enhanced, thereby reducing the cracking degree and porosity of the blank brick material.

The invention relates to a natural building material panel consisting of individual blanks made of clay and loam, which are arranged seamlessly and offset and are connected by force. Since the individual components (blanks) are already dry, the panel production process is not subject to drying shrinkage, and the final panel can be as large as an entire wall. The overlaps and the fully bonded paper reinforcements on the top and bottom surfaces, as well as between the layers, provide sufficient reinforcement to withstand flexural loads. The internal reinforcements are temporarily protected by the resting blanks in case of fire or water, thus keeping the plate dimensionally stable for longer.

The invention provides a high-pressure casting process of a bearing retainer, which comprises the following steps of: 1, carrying out high-pressure casting by adopting a cold chamber die casting machine to prepare a retainer blank, spraying a release agent on a mold cavity in advance, closing a mold, and applying high-pressure mold locking through a mold locking mechanism; 2, pushing the injection punch in two stages: pushing the molten metal at a low speed, switching to high-speed filling when approaching a cavity, and then instantaneously pressurizing to compensate shrinkage; thirdly, after the casting is rapidly solidified in the mold, mold opening and ejection are conducted, and the fixed mold face and the movable mold face of the mold are designed in a non-inclination mode; fourthly, the blank is subjected to sand blasting treatment so as to improve the surface quality; fifthly, pollutants on the surface of the blank are removed through a cleaning machine; and sixthly, machining and quality detection are conducted on the blank piece. Two-stage injection control is combined with instantaneous pressurization and pressure maintaining, so that the problem that local part of molten metal is not filled or the surface quality is poor in the traditional casting process is solved, and the defects of incomplete mold filling and air holes caused by air holes or oxide inclusions are overcome.

A method includes: forming a blank by cutting a plated steel sheet having a plating layer formed on at least one surface of a base material; and heating the blank in a heating furnace, wherein the heating of the blank includes: a multistage heating operation of heating the blank in stages; and a soaking operation of soaking the blank, in a temperature of Ac1 to 910° C., and a temperature an in the soaking operation and a total heating time bn in the heating of the blank satisfy6⁢2≤91.81+K-0.0⁢22×an-0.23×bn(K: a material correction coefficient.)

The invention belongs to the technical field of automobile part casting, and particularly relates to a casting method for producing a brake disc through a green sand multi-layer stacking box process. Molten iron obtained through inoculation is poured into a casting mold cavity jointly formed by a core set and a sand mold made of green sand in a layered mode, stream secondary inoculation and heat preservation are carried out in the pouring process to obtain a blank casting, heat treatment is carried out, then the constant temperature is kept, furnace cooling and discharging are carried out, air cooling is carried out after discharging is carried out, and the casting is obtained. Performing numerical control processing on the blank casting to obtain a finished cast iron brake disc; compared with a single-layer brake disc, the brake disc produced by adopting the green sand multi-layer stacking box process has the advantages that the manufacturing and production efficiency is greatly improved, and the cost is greatly reduced.

The invention relates to the field of fracture prevention of 3D printing sand cores, in particular to a method for preventing a superfine 3D printing sand core from being fractured. In order to solve the problems that in the prior art, the strength is increased in the mode that a core bar penetrates through a sand core, but a gap between the core bar and the sand core cannot be effectively eliminated, and the fracture trend of the 3D printing sand core is increased, the invention provides the anti-fracture method for the superfine 3D printing sand core. The special core bar has the following beneficial effects in the aspect of solving the problem of breakage of a sand core with a superfine structure: after a casting is knocked out, the core bar is naturally separated and can be recycled and reused; the core bar blank is convenient to obtain and simple to process, and the cost is effectively saved. The special core bar is high in practicability, and sand cores with similar structures can be flexibly adjusted and used; bonding agents are filled inside and outside the special core bar to be seamlessly connected with the sand core, and the strength of the sand core is improved through overall hardening.

The invention discloses a precoated sand combined core for agricultural machine belt pulley production, and relates to the field of casting parts, the precoated sand combined core comprises an external core, an internal mold core is mounted in the external core, a casting is poured between the external core and the internal mold core, a cross gate is arranged at the end part of the external core, and the cross gate is communicated with a sprue and an ingate; a heat preservation riser is arranged in the inner mold core, an exhaust needle is arranged in the heat preservation riser, pouring molten iron flows through the sprue, the cross gate and the edge pressing ingate, the pouring molten iron enters a casting mold cavity, feeding is conducted through the heat preservation riser, and feeding of independent hot knots near a bearing hole of the middle bearing is achieved. The groove is formed in the outer core-spun inner ring, so that integral groove casting of the belt pulley can be achieved, secondary groove machining is not needed, and compared with a traditional casting process, the technology has the advantages that the process yield is increased, the internal quality is improved, the rejection rate is reduced, the machining time is shortened, the machining efficiency is improved, and the blank cleaning difficulty is reduced.

A kind of mining bimetallic sprocket and manufacturing method, including the following steps, using three fire forging forming mode to the bimetallic profile blank is forged treatment;The sprocket of forging forming is normalized;After the sprocket blank of normalizing is sprocket rough machining tooth groove, inner hole, outer circle, end face;The base body of sprocket is quenched and tempered heat treatment;Outer circle of sprocket base body, tooth type semi-finishing;Finish machining gear.The sprocket piece material of the application can satisfy that sprocket appearance hardness is lower, wear resistance is higher, not easy to wear during use.Connection sleeve material can satisfy that sprocket appearance hardness is lower inner hole hardness is softer, easy to gear.Adopt blank 3 fire forging process, can make blank internal grain refinement.

The application discloses a high-precision metal plate manufacturing belt wheel pattern forming method and equipment, S1. The embossed blank is prepared through a front stamping process, the center hole diameter of the embossed blank is controlled to be 0.39 times the diameter of the pattern petal contour edge, and the embossed surface material thickness of the embossed blank is 0.9-1.1 times the thickness of the raw material; S2. Stretching oil is applied to the outer diameter surface of the embossed blank, and the embossed surface of the embossed blank is cleaned by the surface treatment unit; the application realizes a systematic treatment scheme through a process-equipment collaborative mechanism, solves the cause-and-effect chain of flow instability-forming rebound-contour out-of-tolerance through center hole diameter, material thickness, surface treatment, positioning accuracy and giving-up design, so that the high-precision pattern forming meets the 0.015mm contour degree and R angle tolerance requirements, and the product qualification rate is improved.

Installation systems and methods for fenestration units configured to be set into a rough opening from an exterior side of a building structure or wall. The fenestration units may include a retention system coupled to the frame and operable to exert a retention force on the fenestration unit to maintain positive engagement of the fenestration unit with the rough opening framing and resist extraction of the fenestration unit from the rough opening upon insertion of the fenestration unit in the rough opening from the exterior side of the rough opening.

The invention discloses a complex structure casting resin sand gravity casting liquid weight calculation method, and relates to the technical field of equipment manufacturing, and the method comprises the following steps: building a casting part finished product three-dimensional model; the machining allowance grade is determined according to the nominal size of the part finished product three-dimensional model, and the part finished product three-dimensional model is adjusted based on the machining allowance grade to obtain a process blank model; designing a pouring pipeline model and a riser model; obtaining the volume of each model based on three-dimensional design software; selecting a reasonable volume shrinkage rate epsilon v according to the element content in the raw material molten steel; obtaining a resin sand box expansion rate fv based on measured data; correcting the volume of the process blank model based on the volume shrinkage rate epsilon v and the resin sand box expansion rate fv; and the mass of molten iron needed for pouring is calculated based on the volume of each model. According to the method, the residual molten steel is smaller than or equal to 4%, the yield is 50% or above, the material utilization rate is synchronously increased by 3-10%, cost reduction, energy conservation and zero test are achieved, and the problem that molten steel raw materials are wasted during gravity casting of complex-structure casting resin sand is solved.

The utility model relates to the technical field of casting, and discloses a cylinder sleeve air inlet starting line position core finishing tool structure which comprises a clamp, a seventh core and an eighth core are arranged in the clamp, air inlets are formed in the outer side of the seventh core and the outer side of the eighth core, a third core is arranged in the seventh core and the eighth core, and the seventh core and the eighth core are arranged in the third core. A first core, a second core, a fifth core and a sixth core are sequentially and fixedly connected to the third core from top to bottom, a fourth core is fixedly connected to the outer side of the fifth core, a core repairing positioning body is inserted into the seventh core and the eighth core, a rotating body is rotationally connected to the top of the core repairing positioning body, and a sample plate is fixedly connected to one end of the rotating body. According to the utility model, the core finishing positioning body is matched with the scraper in a rotating manner, so that interference is eliminated, automatic centering is realized, and the concentricity and dimensional accuracy of the sand core are improved. And putty smearing and drying are optimally matched, so that excessive gaps or poor finishing is avoided. And finally, the sand core is compact in structure and accurate in size, the blank qualification rate is greatly increased, and a guarantee is provided for subsequent production.

The invention discloses a rapid manufacturing process of a 3D printing sand mold outer mold for a static pressure molding line, and relates to the technical field of casting. The process is different from conventional metal mold and wood mold manufacturing processes, an outer mold body blank is rapidly manufactured through the 3D printing technology, and then hardening and surface smoothing treatment are conducted through hardening liquid. Through hardening of the hardening liquid, the surface strength and hardness of the outer mold body can be greatly improved, the outer mold body can completely bear the molding pressure (1.2 Mpa) of a static pressure molding line, the hardened sand mold can pass through at least 300 molds without deformation, and the dimensional tolerance stability is good. The surface of the outer mold body is smooth through surface smoothing treatment, and the sand scrabbling defect is avoided. Surface treatment is matched with surface hardening, the manufacturing period of the outer mold can be shortened, the manufacturing cost of the outer mold can be reduced, and meanwhile the use requirement of a static pressure molding line can be met.

The utility model discloses a water pump cover casting mold capable of preventing core breakage during molding, which relates to the technical field of casting molds and comprises a mold plate, two upper molds arranged on the top surface of the mold plate, two lower molds arranged on the bottom surface of the mold plate, a first straight pouring column arranged on the top surface of the mold plate, a second straight pouring column arranged on the bottom surface of the mold plate, and a third straight pouring column arranged on the bottom surface of the mold plate. The second straight pouring column is arranged on the bottom surface of the template and is coaxially arranged with the second straight pouring column, the lower cross gate is connected with the second straight pouring column, the ingate is vertically arranged on the lower mold, and the shunting piece is arranged on the top surface of the template and is connected with the ingate and the lower cross gate at intervals; according to the water pump cover casting mold capable of preventing core breakage during molding, smooth demolding of molding sand in a deep hole can be achieved, the situation that a water outlet through hole in the middle of a casting blank after molding and pouring is blocked and a casting is scrapped due to core breakage in the molding sand is avoided, and the percent of pass and the production efficiency of products are improved.

The present application relates to a kind of gasification slag coupling biochar preparation ceramsite adsorption material method, belong to solid waste resource technology field, comprising the following steps: step S1, prepare the following weight parts raw materials: 68-72 parts coal gasification slag, 9-12 parts cement, 8-10 parts sodium silicate water glass, 6-8 parts expanded perlite, 14-20 parts functionalized biochar, 130-150 parts modified liquid and 0.1-0.2 parts initiator;Step S2, preparation forming ceramsite roughcast;Step S3, modifier modification;The present application adds functionalized biochar and modifier, functionalized biochar contains hydroxyl, ester group, amide group, benzene ring and epoxy group biochar structure, not only can occur chelation with heavy metal cation, and can occur chemical crosslinking with modified liquid, form three-dimensional intercommunication network structure, through their common effect, improve the adsorption capacity of ceramsite adsorption material and chelating performance to metal ion.

According to the material-saving cutting method for the simple special-shaped stone through the diamond wire saw, the robot wire saw is used for cutting and separating the stone into small modules, and then the small modules are combined into a new product, so that the stone is saved, and stone waste is reduced; the cutting method comprises the following steps: step 1, selecting a blank of a to-be-cut piece; 2, on the basis of the selected to-be-cut piece blank, proper modeling and cutting track design are carried out according to requirements; step 3, programming the planned track by using robot offline programming software, constructing a straight line cylindrical surface, and exporting a cutting program; 4, the robot rope saw is started, a cutting program is imported, and the to-be-cut piece blank is cut; 5, after cutting is completed, the to-be-cut piece blank is cut and separated into four separation modules through cutting; step 6, cutting n to-be-cut piece blanks with the same size to form 4n separation modules; and step 7, selecting four small separation modules, and gluing through gluing surfaces to form the special-shaped stone product.

The invention belongs to the field of metal materials, and relates to a long-life temperature-resistant anti-crack composite plug and a preparation method thereof. According to the invention, through elaborate design of components of the metal layer, excellent hardness and wear resistance are provided, the material is suitable for high-temperature and high-wear working conditions, and by adding a proper amount of RE and Ni, the plasticity and toughness are improved while the material strength is improved, the service reliability is remarkably improved, and the service life is remarkably prolonged; an asymmetric thermal field which is fast in internal cooling and slow in external cooling is constructed, high-quality interface bonding and a compact structure are achieved in the composite casting process, a surface pressure stress field beneficial to crack resistance is formed in the service process, thermal stress concentration is effectively relieved, generation and extension of thermal fatigue cracks are restrained, and the service life of the composite casting is prolonged. And the service life, temperature resistance and crack resistance of the composite plug are improved.

The utility model provides a special vehicle fluted disc blank extrusion forming device which is characterized in that a plurality of sand cores are stacked in multiple layers in the vertical direction, and a fluted disc blank is formed in a cavity of each sand core; the cavity of each layer of sand core is provided with a plurality of flow gates; the ingates are communicated and connected with the inner sprues of the sand cores, and the cavities of the sand cores are communicated into a whole through the inner sprues; a dead head is arranged at the uppermost part of the device, is connected to a cavity sprue of the sand core at the topmost layer, and is interconnected and communicated with the ingate; a sprue is designed in the device, the ingates of the sand cores on the bottommost layer converge at the lowest position of the sprue through the bottom runner, and the sprue is higher than the sand cores on the topmost layer and is flush with the dead head. According to the utility model, a plurality of blanks share one upper and lower combined cavity device, and are formed through one-time casting, so that the simultaneous mold filling process of a plurality of products can be ensured, the production efficiency is improved, the defects of sand holes, air holes and the like can be effectively reduced, and the quality of the product blanks is ensured.

The invention discloses a wet-process color mixing implanting mechanism for a colored artificial stone plate casting blank, and belongs to the technical field of building material production equipment. The implanting mechanism comprises a rack, a supporting table, a cement pool and a plurality of injection mechanisms, and is characterized in that the supporting table is connected to the rack, the rack is provided with a driving mechanism used for driving the supporting table to linearly move, the injection mechanisms are connected to the supporting table, each injection mechanism comprises a hopper, a material bag and an injection pipe, and a plurality of injection holes are formed in the side wall of each injection pipe; the injection mechanism is communicated with the hopper, the hopper is communicated with the hopper through a material bag, the material bag is communicated with the hopper through a valve, the supporting table is provided with an extrusion mechanism used for extruding the material bag, and the rack is provided with a lifting mechanism used for lifting the height of the rack. The pigment can be uniformly discharged into the cement by controlling the extrusion rate, so that the lines are more attractive.

The invention relates to the field of seven-stringed plucked instrument designing and manufacturing techniques, in particular to a chopping technique for a seven-stringed plucked instrument embedded with a sound beam, which comprises the following steps: S1, narrow groove digging: presetting the size of a narrow groove, cutting red sandalwood into preliminary blank battens by using a sawing tool, and planing the blank battens by using a planing tool to enable the surfaces of the battens to be flat and smooth, respectively determining the positions of two narrow grooves in treble and bass areas of the groove belly of the guqin panel; and S2, sound beam finishing and polishing are conducted, specifically, the machined red sandalwood battens are further finished, whether the edges of the red sandalwood battens are neat or not is checked, abrasive paper is used for polishing the red sandalwood battens, and polishing is started from raw abrasive paper. According to the guqin, the treble and bass beams are additionally arranged, so that the panel of the guqin has the acoustic characteristics of different wood materials, the ideal treble and bass effect can be achieved, the coexistence of the drum sound and the golden stone sound required by the guqin is achieved, and the guqin is more stable and not prone to deformation due to the fact that the sound beams are additionally arranged.

The present invention belongs to the technical field of refractory materials, and specifically relates to a composite thermal insulation tin bath bottom brick and a preparation method thereof. A lightweight mixture is poured into a steel mold and mechanically vibrated for 10 to 20 minutes. A heavy mixture is then poured into the mold containing the vibrated lightweight mixture. After vibrating for 5 to 10 minutes, the mixture is allowed to stand and cure for 12 to 24 hours. The mixture is then demolded and cured for 12 to 15 hours to obtain a rough composite brick. The rough composite brick is then dried for 24 to 36 hours, sintered at high temperature, and then cooled to obtain the composite thermal insulation tin bath bottom brick. The present invention can improve the porosity and thermal insulation effect of the tin bath bottom brick while ensuring the mechanical strength and alkali corrosion resistance of the tin bath bottom brick.

The invention discloses a process processing method for processing a large-diameter thin-wall cambered surface part. The process processing method comprises the following steps: selecting a proper plate material as a blank profile of the cambered surface part; a plurality of arc-shaped part appearances are cut in a cutting mode and are separated from the blank profile, and blank arc-shaped parts are obtained; and the blank arc-shaped part is fixed through a machining clamp, milling machining is conducted, and the finished large-diameter thin-wall cambered surface part is obtained. According to the process machining method, the blank profile selects the plate material to replace a round pipe material, the purchase cost of the round pipe material is greatly reduced, then according to the sizes of the parts and the sizes of the small plate materials, the numbers of the parts distributed on the small plate materials can be calculated through software drawing, and then linear cutting is conducted according to the positions of the single parts distributed on the plate materials; partial feature machining of the part is completed through sequential single cutting, the whole process is greatly driven compared with the prior art, no round pipe material is adopted in the whole process, and therefore the problem that follow-up parts cannot be machined due to cracking is avoided.

This invention discloses a method for machining thin-walled, porous, irregularly shaped single-sided frame parts, belonging to the field of machining technology. The method includes the following steps: pretreatment, placing the part blank in a constant-temperature furnace to release stress; milling the reference surface, milling a reference surface on the surface of the part blank to complete the machining of bolt holes on the edge of the part blank; rough and finish milling the smooth surface, using a two-step progressive feed method to complete the milling of the smooth surface of the part; rough and finish milling the frame surface, cutting the frame surface layer by layer from the outside to the inside according to the frame surface contour; drilling and blanking, machining the remaining positioning holes and weight-reducing holes, and then blanking the part using wire cutting; and fitter finishing, removing burrs and flash from the surface of the part and the holes, and using a coordinate measuring machine to inspect and finish any out-of-tolerance areas. The beneficial effects of this invention are: it reconstructs the machining sequence and process logic, reverses the existing machining sequence, and structurally avoids the problem of insufficient support caused by cavities, making it suitable for machining thin-walled, porous, irregularly shaped single-sided frame parts.