22results about How to "Improve casting quality" patented technology

The present application belongs to the technical field of investment casting, and particularly relates to a manufacturing process of a impeller shell. The manufacturing process of the impeller shell comprises the following steps: 1) preparing a wax mold; 2) preparing a surface layer shell; 3) preparing a back layer shell; 4) sealing the shell with slurry; 5) dewaxing; and 6) baking. The manufacturing process of the impeller shell has the characteristics of short production cycle, low production cost, good shell removal, high finished product rate and the like, and improves the casting quality of the castings containing the impeller with a runner width less than 4 mm in the production of the casting industry.

This invention belongs to the field of casting binder technology, and particularly relates to an environmentally friendly water glass casting binder with anti-aging function. The raw material composition of this invention includes: sodium water glass, lithium water glass, polymethyl methacrylate, and lithium carbonate, which enables: 1. Polymethyl methacrylate combined with lithium carbonate to provide more hydrogen bonds to the water glass binder system, changing the surface potential energy and solvation ability of the water glass, improving the stability of the water glass, and thus obtaining better "anti-aging" ability; 2. Lithium carbonate itself has the effect of a dispersant, and combined with water glass at a specific modulus, it can further improve the dispersibility of the sand mold; 3. Polymethyl methacrylate itself has basic bonding strength, and by limiting the modulus of the water glass, it can also appropriately improve the bonding strength of the entire binder; 4. The amount of organic polymethyl methacrylate added to this binder is sufficiently small, ensuring that the binder has sufficient safety and environmental protection advantages.

A sand mold assembly for casting wheel hub side molds, comprising an upper sand mold and a lower sand mold; characterized in that the wall thickness of the left and right longitudinal cavity walls of the lower sand mold is greater than the wall thickness of the front and rear transverse cavity walls; a first lower riser socket with an upward opening is provided on the left longitudinal cavity wall, which is used to supply casting molten metal to the casting cavity; a liquid inlet channel is provided on the wall of the upper sand mold located on the left side of the core, and a pair of second upper riser channels, positioned front and rear, are provided on the wall of the upper sand mold located on the right side of the core, which respectively penetrate downward through the bottom wall of the upper sand mold; when the upper and lower sand molds are closed together, the liquid inlet channel is used to supply casting molten metal to the first lower riser socket, and the second upper riser channels connect to the casting cavity and are used to supply casting molten metal to the casting cavity; at the same time, optimizing the wall thickness and riser structure of the sand mold can greatly improve the casting quality of the wheel hub side mold casting.

This invention relates to the field of valve molding, and more particularly to a valve molding casting equipment and mold, comprising a mold body, with a gating and riser body at the upper end of the mold body. The mold body is made of foam plastic, and its surface is coated with a refractory coating. After drying, the mold body and the gating and riser body are bonded and fixed together with hot melt adhesive to form a mold cluster. It also includes a vibrating table and a sand box mounted on the upper end of the vibrating table. The sand box has an internal cavity that can be drawn into a negative pressure state. The cavity is connected to the bottom of the sand box through multiple air holes. A U-shaped frame is provided at the upper end of the sand box, with a plastic film covering its upper side. A support ring is provided on the inner side of the U-shaped frame, and the outer side of the support ring is fixedly connected to the U-shaped frame by multiple reinforcing rods. During use, this equipment, compared to existing technologies, ensures the sealing performance after film covering. Furthermore, when releasing the negative pressure state, a longer waiting time is eliminated, improving overall processing efficiency.

The utility model relates to a projector which comprises a shell, an optical machine assembly and an external lens. The shell is provided with a containing cavity and an opening, and the opening is used for communicating the containing cavity with the external space of the shell. And the ray machine assembly is arranged in the accommodating cavity and comprises a ray machine lens. One end of the external lens penetrates through the opening, is matched with the ray machine lens shaft hole and is used for being matched with the ray machine lens to carry out image projection; the external lens is detachably installed on the ray machine assembly.

The application discloses a split-casting structure for a thin-wall pipe, which comprises an upper die, a lower die, a center sand core, an upper sand mold and a lower sand mold, the upper die is arranged on the top of the lower die, the bottom surface of the upper die is provided with an upper forming groove, the top surface of the lower die is provided with a lower forming groove, the center sand core is arranged between the upper forming groove and the lower forming groove, the inner wall of the upper forming groove is provided with a first riser groove and a second riser groove, the inner wall of the lower forming groove is provided with a first pouring channel and a second pouring channel, the upper sand mold is provided with an upper communication hole, the center sand core is provided with a first center hole, the lower sand mold is provided with a first lower communication hole, and the first riser groove, the upper communication hole, the first center hole, the first lower communication hole and the first pouring channel are communicated. The application has the effects of improving the casting integrity and the casting quality of the thin-wall pipe.

The utility model belongs to the technical field of ingot casting production, and particularly relates to a spraying device of an ingot casting mold. Comprising a mold conveying frame used for automatically conveying ingot molds, and a spraying support is arranged at the bottom or the top of the mold conveying frame; a spraying assembly is movably mounted on the spraying bracket; the dust collector assembly is mounted on one side of the mold conveying frame, and the dust collector assembly is used for collecting the atomized and diffused release agent generated by the spraying assembly; the batching cabinet is installed on one side of the mold conveying frame, and the batching cabinet communicates with the input end of the spraying assembly; and the release agent is continuously supplied to the spraying assembly through the batching cabinet, so that the spraying convenience is further improved.

The invention relates to a large casting ladle stabilizing device based on laser measurement, belongs to the technical field of metal casting, and aims to solve the technical problems that a ladle is easy to shake, the positioning precision is low, manual intervention is much, and the distance between a casting mold and the ladle cannot be adjusted in real time in the existing large casting pouring process. The device comprises a travelling crane system, a slewing mechanism, a casting ladle, a stabilizing assembly, a casting mold, an adjusting assembly, a master control cabinet system and a laser scanner. The travelling crane system achieves three-dimensional movement of the casting ladle, the swing mechanism drives the casting ladle to turn over, the stabilizing assembly limits the casting ladle to prevent shaking, the laser scanner detects the distance between a casting ladle nozzle and a pouring basin in real time, the master control cabinet system controls the adjusting assembly to drive a casting mold to move so as to adjust the distance according to detection data, and the matched sliding assembly is matched with casting molds of different sizes. Meanwhile, the invention discloses a corresponding positioning pouring method. The pouring stability and accuracy are improved, casting defects are reduced, the labor intensity is reduced, and the pouring requirements of large castings of different specifications are met.

The application relates to a semi-solid aluminum alloy steering knuckle, a manufacturing method and a vehicle, which comprises the following steps: injecting a semi-solid aluminum alloy slurry into a mold and performing die casting forming to obtain a steering knuckle blank; wherein a sealing plate is arranged on the mold to make a mounting arm connecting hole on the steering knuckle blank into a blind hole with one end open and the other end closed; the steering knuckle blank is machined to make the blind hole into a through hole; and post-processing is continuously performed to obtain a semi-solid aluminum alloy steering knuckle. In view of the welding defects of the steering knuckle connecting hole, the mold is improved to some extent, so that the originally die-cast through hole becomes a semi-closed blind hole, so that the semi-solid aluminum alloy slurry does not intersect at a large area of the part body, but sequentially advances forward, and in this way, the welding defects are avoided and even eliminated.

The utility model relates to the technical field of aluminum alloy hub casting, and discloses a locking type side die pull rod structure which comprises a pull rod body, a connecting part is arranged at the tail end of the pull rod body, a clamping part is arranged at the front end of the pull rod body, and an auxiliary plate used for abutting against a side die back plate is arranged on the pull rod body. And the auxiliary plate can cover more than 50% of the area of the side die back plate. The contact area and the stress area of the pull rod body and the side die back plate are obviously increased, and the problems that a traditional pull rod head is prone to causing local bending deformation of the side die back plate, and the casting quality and efficiency of products are affected are solved. The arrangement of the auxiliary plate locking through groove and the I-shaped lock bolt can lock the auxiliary plate and the side die back plate to form an integrated structure, the stress of the side die back plate during die opening and closing is further uniform, and the problems that when a wheel type with a large wheel width is produced, a pull rod body cannot be adjusted to the center height of the side die back plate, so that the side die is stressed to deflect, and the production efficiency is improved are solved. And the die-casting efficiency and quality are influenced.

The application provides a foundry production intelligent monitoring method based on the Internet of Things, comprising: if the local difference of the casting liquid viscosity exceeds the preset bubble generation critical viscosity, the bubble generation probability and the bubble size distribution range are determined; if the local difference of the casting liquid viscosity does not exceed the preset bubble generation critical viscosity, the current gating opening timing and the flow distribution are maintained; the multi-gating opening timing is optimized according to the bubble generation probability and the bubble size distribution range, the opening sequence and the gating opening timing deviation of each gating are determined, and the optimized opening timing scheme is generated; the flow distribution proportion of each gating is dynamically adjusted according to the optimized opening timing scheme, the flow distribution initial scheme is generated; the casting liquid flow state feedback data after the execution of the flow distribution initial scheme is obtained, the updated flow distribution scheme is generated; and the foundry filling integrity and the internal stress distribution caused by the pressure fluctuation of the stagnation area are calculated according to the updated flow distribution scheme, so that the internal defect prediction result is obtained.

The utility model discloses a supporting base for precision machine casting, and relates to the technical field of precision machine casting. The device comprises a base, an overturning frame is rotationally arranged on one side of the top end of the base, two symmetrically-distributed special-shaped clamping assemblies are arranged at the top end of the overturning frame, an inclination angle adjusting assembly used in cooperation with the overturning frame is arranged at the top end of the base, and bottom columns are fixedly arranged at the four corners of the bottom end of the base correspondingly. The special-shaped clamping assembly comprises two symmetrically-distributed moving frames, and two symmetrically-distributed sliding blocks are arranged in the moving frames in a sliding mode. By arranging the special-shaped clamping assembly, after the clamping block makes contact with the mold, the sliding block is driven by the connecting rod to slide in the guide groove so as to adjust the position, the position of the clamping block is accurately adjusted through the synergistic effect of the sliding block and the connecting rod, the clamping block is made to be fully attached to the concave-convex portion of the outer wall of the casting mold, and a stable foundation is provided for casting; and the machining precision and the product quality of the casting mold are improved.

The application discloses a molding method of a horn-shaped protective cover casting of a gas turbine, the shape of the casting is flat horn-shaped, the inside of the casting is a hollow structure, one end of the casting is a cover opening, the lower part of the small caliber of the cover opening is a cover neck part, the cross section of the cover neck part is elliptical, the structure is a columnar body with uneven wall thickness in each section, the included angle a between the central axis of the columnar body and the normal line of the cross section of the cover opening is an acute angle, the upper surface of the columnar body and the bottommost cross section of the cover opening form a certain included angle, a protruding annular body in the inside of the cover neck part divides the casting into a first casting body and a second casting body, the structure of the casting model for forming the casting mold comprises a mold plate and a mold sample fixedly installed on the mold plate, the structure of the mold sample comprises a sand core mold sample for forming a sand core cavity and directly installed on the mold plate, and a mold mold sample for forming the outer contour of the casting and the inner cavity structure of the first casting body and located above the sand core mold sample and in an integrated structure with the sand core mold sample.

This application relates to a mold and casting process for casting end caps of shell-type hydraulic valve bodies, belonging to the technical field of casting processing. The mold includes a mold body with a cavity formed within it. A runner sand core is disposed within the cavity and fixedly connected to the mold body. A gating port is provided at the bottom of the mold body and communicates with the cavity. The bottom gating assembly includes a sprue base plate and a vertical gating pipe. A horizontal runner is provided within the sprue base plate, with its length direction along the horizontal direction. The vertical gating pipe is vertically positioned above the sprue base plate, with its lower end connected to the sprue base plate and communicating with the horizontal runner. The mold body is fixed to the sprue base plate, and the gating port communicates with the horizontal runner. This application reduces the occurrence of splashing, turbulence, and air entrapment of molten metal within the cavity, thereby reducing the generation of secondary oxidation inclusions and porosity defects inside the casting, which improves the final casting quality.

A casting sprue cup comprises a cup body, a partition and a first partitioning member, the cup body is provided with a pouring hole and a cavity for containing a metal solution; the partition is connected to the cup body and separates the cavity into a first chamber and a second chamber, the partition is provided with a passage communicating the first chamber and the second chamber, and the pouring hole communicates with the first chamber; the first partitioning member is arranged in the passage, and the first partitioning member can partition the passage, and melts when the metal solution is poured to a preset height of the second chamber, so that the first chamber and the second chamber are communicated. In the application, the cavity of the cup body is separated into the first chamber and the second chamber by the partition, the passage is opened after the first partitioning member melts under heat, the metal solution separated from impurities flows into the first chamber through the passage, and finally enters the sprue through the pouring hole, so that the impurity layer is not disturbed by the high-speed flowing metal liquid, the impurities in the metal solution are reduced to enter the sprue, and the casting quality is improved.

This application discloses an automotive wheel hub mold with upper and lower split side molds, including an upper mold, a lower mold, and several side molds. The side molds include a front wheel rim side mold and a rear wheel rim side mold that fit together vertically. The front wheel rim side mold is equipped with a cooling device. This cooling device guides the cooling medium to uniformly and rapidly cool the thickness portion where the front wheel rim connects to the spokes. It includes a cooling chamber, a reflector plate, a water inlet pipe, and a return pipe. The reflector plate is located at the top of the cooling chamber. One end of the water inlet pipe extends into the cooling chamber and slopes upwards towards the reflector plate. The core solution employs a cooling device with a reflector plate. Through optimized pipe structure and program control, uniform dispersion and cooling of the cooling medium are achieved, improving the casting efficiency and solidification quality of this type of wheel, while reducing localized thermal shock to the mold and reducing the risk of surface cracking.

This utility model relates to the field of casting technology and discloses an auxiliary casting device for the production of plate-type multi-way valves, including a core plate, a riser, a product, and a sand core. The riser is located above the core plate, the product is located below the core plate, and the sand core is located below the core plate. The core plate is composed of an annular part and a rectangular part. This utility model fully utilizes the feeding function of the cylindrical riser. Secondly, the core plate, as a key component connecting the riser and the product, has a feeding channel in the middle that directly connects to the product. This allows the riser and the product to communicate and achieve feeding, while reducing direct heat exchange between the molten iron and the product, thus solving the problem of coarse graphite caused by local heat concentration in the product. The sand core is positioned and connected to the stop of the core plate through a stop post, which makes the device more stable and reduces the transfer of heat from the riser to the product. This solves the problem of coarse graphite at the riser in the product due to high riser heat and long solidification time in the existing process, and significantly improves the casting quality of plate-type multi-way valves.

This utility model discloses a runner structure for a heat-dissipating aluminum shell molding die. A runner boss is provided on the front mold core, with an inclined surface formed on the side wall of the boss. A main runner and secondary runners are provided on the rear mold core, with several gates formed on the main runner. Each gate and secondary runner is connected to the mold cavity. By providing a main runner and secondary runners on the rear mold core and forming several gates on the main runner, this utility model can guide molten metal into the mold cavity from multiple points and in different directions. This not only slows down the injection speed of the molten aluminum into the cavity, thus reducing its impact on the mold cavity, but also ensures that the mold cavity is filled simultaneously during mold closing and that residues and gases are discharged, ensuring casting quality. Furthermore, it creates a thin-walled gate breakpoint at the connection between the product and the gate residue after demolding, facilitating easy and smooth separation of the gate residue from the product later. The smooth breakpoint prevents damage to the product, improving production efficiency and yield.

This invention belongs to the technical field of automotive steel manufacturing, specifically relating to a green, low-carbon high-strength automotive steel and its preparation method. The invention adds nickel-doped modified niobium carbide to the high-strength steel, dispersing it in the iron matrix to effectively improve the strength and toughness of the steel plate and increase its porosity. Simultaneously, the addition of Ca, Mg, and lanthanum and cerium carbonate as composite refining agents to the alloy melt improves casting quality and mechanical properties. Furthermore, precise control of the composition of elements such as C, Mn, Si, Cr, Mo, Cu, and Ti, combined with hot rolling, cold rolling, continuous annealing, or hot-dip galvanizing processes, enables the material to possess both high strength and excellent porosity.

The application discloses a vibrating table for coated sand molding line, and relates to the field of casting, which aims to solve the problems of the existing vibrating table, such as the poor filling of iron in the mold box, the poor clamping reliability of the mold box, the unstable vibration of the mold box, the unstable casting quality and the low production safety, and comprises a moving frame, a regulating frame hinged to the moving frame, a supporting table fixedly connected to the regulating frame, a guide groove and an embedded groove arranged on the supporting table, a guide roller rotatably connected to the guide groove, a vibrating plate slidably connected to the embedded groove, a through groove formed in the vibrating plate, a limiting frame arranged on the side of the vibrating plate, two clamping blocks slidably connected to the two sides of the regulating frame, a baffle synchronously moving and arranged in the middle of the two clamping blocks, a buffer assembly slidably connected to the clamping block and matched with the vibrating plate, and the baffle is hinged to the regulating frame. The common cooperation of the regulating frame, the vibrating plate and the clamping block improves the clamping stability, simultaneously adapts to different vibrating requirements, and effectively improves the casting quality.

The application discloses a kind of nuclear power gate valve body molten steel filtering device, including liquid injection tank, the upper end of the liquid injection tank is installed with the liquid inlet channel being communicated with its inside, and the liquid inlet channel is embedded with baffle, two porous ceramic filter plates are arranged in the liquid injection tank, the liquid outlet channel being communicated with its inside is installed on the both sides of the liquid injection tank, the lower end of the baffle is fixedly connected with support by telescopic link, and the side wall of the support is rotatably connected with arc-shaped cylinder.The filter residue on the liquid level is gently scooped up by the arc-shaped cylinder and flows into the liquid storage hopper for temporary storage, and then discharged outward through the discharge hopper and the discharge pipe, so that the molten steel in the liquid injection tank does not flow substantially, which can more effectively and completely clean the filter residue on the liquid level, without increasing the outflow speed of the molten steel, ensuring that the molten steel in the mold is in a stable state, and improving the processing quality of the final valve body casting.

The utility model discloses a kind of die casting devices, belong to foundry technical field, including static mould and movable mould, injection system is provided on movable mould, injection system is used to inject metal liquid into the foundry space synthesized by static mould and movable mould, refrigeration system is provided in static mould, and refrigeration system is used to cool the metal liquid in static mould and movable mould.When movable mould moves to right and is closed with static mould, trigger switch delay trigger, in the time of trigger switch delay, injection system injects metal liquid into the foundry space synthesized by static mould and movable mould, metal liquid injection is finished, trigger switch is closed, electromagnetic stop valve is powered on and opened, refrigeration system works, and the metal liquid in static mould and movable mould is cooled, keeps the time set, movable mould moves to right and is separated from static mould, since movable mould and static mould are separated, trigger switch is opened, electromagnetic stop valve is powered off and closed, and refrigeration system stops working, realize the metal liquid in the foundry space timely cooling to improve the purpose of casting efficiency and quality.