11results about How to "Reduce casting defects" patented technology

The utility model discloses a plate spring support which comprises a support body used for connecting a girder and a plate spring body and a limiting assembly, the support body is provided with a side extending plate capable of supporting the bottom wall of the girder, the support body is provided with a first wall and a second wall which are arranged in parallel, and the first wall is perpendicular to the side extending plate and attached to the side wall of the girder. The limiting assembly is installed on the frame body and connected with the girder and the plate spring body. The weight of the support can be reduced while the structural strength is guaranteed, and the dead weight of the whole vehicle is reduced.

This utility model discloses a casting mold for aerospace metal equipment, comprising: a supporting base, an inner supporting ring frame fixedly connected to one end of the supporting base, and an outer supporting ring frame fixedly connected to the other end of the supporting base. A rotating ring base is provided on the top of both the inner and outer supporting ring frames. An upper mold mechanism is provided on the inner wall of the inner supporting ring frame and the outer wall of the outer supporting ring frame. A motor is fixedly connected to the other end of the supporting base, and a gear is fixedly connected to the output end of the motor. An installation groove is provided at one end of the rotating ring base. This utility model uses a motor to drive the gear, which rotates in conjunction with the inner tooth groove of the rotating ring base, switching the position of the lower mold mechanism. A cylinder pushes the upper and lower molds together to close, and molten metal is injected through the inlet hopper to complete the casting. After mold opening, the rotation and switching are repeated, forming a high-efficiency production cycle. This mode allows for rapid mold switching, enabling continuous production of multiple specifications of products, reducing equipment idle time, and significantly improving production efficiency.

This invention discloses a green and energy-saving extrusion casting method and apparatus that combines liquid phase retention and forced feeding sequential solidification. The method includes the following steps: melting a pre-proportioned metal to obtain a basic alloy melt; degassing and refining followed by the addition of an intermediate alloy to obtain an intermediate alloy melt; lowering the temperature to obtain a finished alloy melt; during casting, adjusting the ingate temperature between the solid and liquid phases of the finished alloy melt; and activating a multi-point positioning cooling device to locally force-cool areas with large wall thicknesses. This invention, by precisely controlling the ingate temperature between the solid and liquid phases of the alloy melt, ensures that the alloy melt at the ingate is in a solid-liquid mixed state during pressure holding solidification. The liquid alloy melt can smoothly pass through the gap between the primary solid phases and flow into the shrinkage cavities of the casting body during pressure holding solidification, achieving further forced feeding of the liquid during the pressure holding process of alloy melt extrusion casting. This results in high-quality castings with high microstructure density, few shrinkage cavities and porosity defects, and excellent strength and elongation.

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.

This utility model relates to the technical field of wax model cleaning devices, and discloses a wax model cleaning device, including a rotating cleaning mechanism and a flipping mechanism. The device is characterized by: a protective shell on one side of a support frame, a motor fixed inside the protective shell, a rotating shaft connected to the output end of the motor, a small gear connected to the other end of the rotating shaft, the small gear meshing with a large gear, the large gear fixed to the outside of the cleaning cylinder, a side plate fixedly connected to the support frame, a support plate on the side of the side plate away from the cleaning cylinder, a rack fixedly mounted on the support plate, and a gear rotatably connected to the rack. Through the coordinated action of the rotating cleaning mechanism and the flipping mechanism, the wax model can achieve omnidirectional rotation during the cleaning process, allowing the cleaning fluid to fully contact all parts of the wax model, including hard-to-reach corners and crevices, thereby effectively removing impurities and wax debris from the surface of the wax model, significantly improving cleaning efficiency and quality, and reducing casting defects caused by incomplete cleaning.

The utility model discloses a split type cylinder body, air cylinder, force supply device and nail gun, wherein the split type cylinder body comprises a cylinder head seat and an outer cylinder body, one end of the outer cylinder body is provided with an opening, the cylinder head seat and the outer cylinder body are arranged in a split mode, the cylinder head seat is fixedly assembled at the opening of the outer cylinder body, and the outer cylinder body is fixedly assembled at the opening of the outer cylinder body. The shape of an inner cavity is complex and casting defects are prone to occurring due to traditional integrated casting, the outer cylinder body and the cylinder head base can be machined separately, machining difficulty caused by a complex structure is avoided, the casting defects are reduced, the yield is improved, damaged parts are allowed to be replaced independently through a split structure, the air cylinder does not need to be replaced integrally, and the maintenance cost is reduced. The cylinder head seat and the outer cylinder body are independent parts, different materials can be adopted according to actual requirements, and the performance and the cost are further optimized.

The application provides a high-casting-performance beryllium aluminum alloy and a preparation method thereof, and belongs to the technical field of alloy materials.The preparation method comprises the following steps: preparing materials according to the weight percentages of Be ingots, Al ingots, Ag ingots, Co sheets, Si and La metals; placing the Ag ingots, the Co sheets, the Si and the La metals at the bottom of a crucible, then sequentially placing the Al ingots and the beryllium ingots into the crucible, refining, and obtaining a melt; uniformly stirring the melt, then gradually cooling the melt to a pouring temperature, then pouring the melt into a prefabricated ceramic mold shell, and standing for 3-5 minutes in a furnace and cooling outside the furnace.The beryllium aluminum alloy has a uniform and dense structure, good fluidity, high casting performance, and is easy to be cast into a shape, and has fewer casting defects.

The utility model provides a kind of pouring system, belong to preparation technical field. Including: sprue, it includes the first straight section with the second straight section of first vertical direction extension, and the second straight section is communicated and is provided with the bend section between first straight section;Anti-impact part, it includes the anti-impact cavity of second straight section connection arrangement, the bottom of anti-impact cavity is provided with refractory part, and the both sides of anti-impact cavity are respectively communicated and provided with the cross gate, and the filter part is arranged in cross gate;Inner gate, it is communicated and arranged with cross gate, and inner gate is used to be communicated with cavity;Advantage is that molten iron enters bend section after first straight section, can smoothly transition to second straight section, effectively reduce flow rate and improve flow state;The setting of anti-impact cavity and refractory part can prevent high-temperature molten iron from directly impacting sand, avoid causing sand mould damage or sand particle drop, significantly improve mould service life and casting surface quality.

A diaphragm chamber structure of a diaphragm pump belongs to the technical field of diaphragm pumps, and particularly relates to improvement of the diaphragm chamber structure of the diaphragm pump. The diaphragm chamber comprises a diaphragm chamber cover, a rubber diaphragm and a diaphragm cavity, and is characterized in that a cavity is arranged on one side of the diaphragm chamber cover, and a pressing part is arranged on the outer circumference of the cavity; a channel is formed in the other side of the diaphragm chamber cover; an inlet and an outlet are respectively formed in two ends of the channel; the cavity is communicated with the channel; a pressing groove corresponding to the pressing part is formed in the diaphragm cavity; and the edge of the rubber diaphragm is clamped and fixed through the mutual matching of the pressing part and the pressing groove. According to the utility model, the production cost and the maintenance cost are reduced, the structure is simple, and casting defects in the casting process are reduced.

The utility model relates to rough casting technical field discloses a valve cover rough casting, including base, the inside of base is provided with first reserved hole, the material of base is cast iron, the top of first reserved hole is fixedly connected with arc shell, the top of arc shell is fixedly connected with intercommunication shell, the utility model discloses a first reserved hole and second reserved hole processing thread line on base and connecting plate, and utilize first reserved hole to carry out device fixed, second reserved hole carries out the structure operation of whole and other components connection, drives the stable installation of whole device and the effective connection with other components, simultaneously, the intercommunication between arc shell, intercommunication shell and transmission channel can make the better flowability of substance in the inside, thereby realized the stability of device installation and the reliability of other components connection, ensure that whole device does not appear loose, leakage etc. problem because of unstable connection in the working process, guarantees the leakproofness.

The application discloses a copper alloy glass mold casting coated sand annular pouring line, which comprises an annular guide rail, a plurality of conveying trolleys are uniformly arranged on the upper part of the annular guide rail, two adjacent conveying trolleys are sequentially connected through universal joints in a head-to-tail rotation mode, and two groups of driving mechanisms for driving the plurality of conveying trolleys to move are arranged on the lower part of the annular guide rail; sand boxes are arranged on the conveying trolleys respectively, and the sand boxes are all of an upper and lower opening structure; a filling material collecting warehouse, a sand box pouring position and a vibrating conveying and screening machine are sequentially arranged outside the annular guide rail, the lower end of the filling material collecting warehouse is funnel-shaped and is provided with a screw feeder which is in communication with the inside of the filling material collecting warehouse, and a pushing box taking mechanism is arranged between the vibrating conveying and screening machine and the annular guide rail. The application can automatically complete sand box filling, box pushing, box taking, conveying and sand dropping processes, reduces the labor intensity of workers, shortens the working time, and can greatly improve the casting production efficiency.