38results about How to "Reduce post-processing workload" patented technology

The invention discloses a preparation method for carbon fiber composite automobile parts. The preparation method comprises the following steps of (1) preparing carbon fibers from polyacrylonitrile precursors, processing the carbon fibers by an anodic oxidation method, preparing the carbon fibers into carbon fiber bundles, and then preparing a carbon fiber textile; (2) performing surface modification on the prepared carbon fiber textile by a modified sizing agent made from mono-wall CNTs, PPEK, a modified system and a sizing agent; (3) preparing a Steel / CFRP multicoat through overlapping a modified carbon fiber reinforcement composite and a steel plate; (4) forming the prepared Steel / CFRP multicoat by an RTM mold through a vacuum resin transfer molding forming technology; and (5) demouding the formed Steel / CFRP multicoat to obtain the carbon fiber composite automobile part products. The preparation method disclosed by the invention is low in preparation cost, superior in performance, economic and environmental-friendly, good in stability, easy and simple to operate, and low in preparation difficulty, can meet requirements of batch automatic production, provides reliable technical support of the of carbon fiber components for scaled application in the field of automobile production, and has wide application prospects.

The invention provides a forming mold and method of a large-curvature open thin-walled structure composite. The forming mold is of a half-closed type single-cavity lateral-pressurization structure andcomprises a male mold, a female mold, an upper cover plate, lateral stop blocks, lateral sliding blocks, lifting rings and fastening bolts. By the adoption of the forming mold and method of the large-curvature open thin-walled structure composite, the quality problems of product deformation, dimension deviation, surface defects and the like which are prone to happen in the mold pressing process of a large-curvature open thin-walled composite product are solved, the mold structure is light, simplified, economical and durable, the forming mold is suitable for various pressure devices and achieves one-off formation of a large-curvature open thin-walled structure, the work amount of post-treatment is small, and the yield is high.

The invention discloses a detection method and device for a drivable area, which uses all contact points between target objects and the ground in the acquired current road image as marked points for marking, and connects all marked contact points to obtain a non-closed polyline , mark the object category corresponding to each target object in the non-closed polyline, and obtain the target road image containing the object category labeling result, input the target road image into the drivable area semantic segmentation model, and obtain the predicted pixel point category of each pixel Information, according to the predicted pixel category information and location information of each pixel, filter and cluster all the marked contact points to obtain different types of contact point sets, based on the contact point set, determine the drivable area in the current road image. When the present invention recognizes the drivable area, only the contact point between the target object and the ground is marked as a marked point, thus saving a lot of marking work and shortening the marking time.

The invention discloses equipment for directly growing a sapphire fairing. The equipment comprises a rack, a furnace body, a crucible and a capillary guide mold, wherein a rotating component is arranged below the rack and comprises a fixed frame, a rotary motor and a drive rod; the crucible can be driven by the rotary motor to rotate; a support is arranged above the furnace body; a longitudinal moving mechanism and a horizontal moving mechanism are arranged on the support; the horizontal moving mechanism is connected with the longitudinal moving mechanism; a torque motor is arranged on the horizontal moving mechanism; a seed rod fixed frame is arranged on an output shaft of the torque motor; the capillary guide mold is vertically arranged in the furnace body and is installed on the crucible via a fixed clamp; the lower end of the capillary guide mold extends in the crucible; a through hole through which a seed rod can pass is formed in the top of the furnace body; and the seed rod can move horizontally in the through hole. The equipment can effectively reduce the processing difficulty and improve the production efficiency.

The invention discloses an indoor roof plastering device, and belongs to the technical field of building mechanical equipment. The indoor roof plastering device is used for mechanization work of plastering an indoor roof. According to the technical scheme, a plastering head part is located at the highest end of the plastering device, a plastering thickness regulating part is installed in the plastering head part, a feeding part is connected on the lower portion of the plastering head part, a transmission part is located on the lower portion of the plastering head part, the plastering head part and the feeding part are respectively connected with the transmission part, the plastering head part, the feeding part and the transmission part are respectively installed on base plates, the base plates are connected on a lifting frame part which is connected with a hydraulic lifting part, and the hydraulic lifting part and the lifting frame part are installed on a vehicle frame part. By means of the indoor roof plastering device, the indoor roof can be plastered evenly, a combination property between mortar and the roof is good, a parallelism error requirement between the roof and the ground is met, and the plastering quality is guaranteed. The indoor roof plastering device is capable of achieving continuous work, greatly improving plastering efficiency and reducing labor intensity of workers.

The invention relates to a precision casting process. Aiming at the problems of the chemical method hardening and desanding process and low-mode water glass method castings that are prone to defects, etc., a carbon dioxide hardening and high temperature desanding process is independently designed. The water glass method precision casting process includes the preparation of Wax materials, wax mold making, wax mold inspection, wax mold assembly tree, coating preparation, mold shell making, hot air dewaxing, mold shell roasting, mold shell inspection, molten steel pouring, sand cleaning and cutting, and casting inspection. It eliminates equipment corrosion, environmental pollution, and hidden dangers to the personal safety of employees in the traditional chemical hardening and desanding process. The working environment reduces the production cost and greatly improves the production capacity of traditional water glass shells.

The invention relates to a segmental casting method for a special-shaped steel casting of a subway bogie. The middle part of the upper rib plate of the casting is divided into upper and lower parts, and the upper type is divided into segments by the center of a circular boss; the pouring system consists of an inner runner from below The center of the rib plate enters the mold cavity; it is set on the machined surface and other positions; the sand mold of the lower outer mold, the sand mold of the upper outer mold, the sand filling sand core of the gate and the sand filling sand core of the section are made of water glass ester hardened sand; After the mould, the furnace material is smelted into a pouring melt, and the casting is poured, and the melt enters from the gating system; cooling, opening the box to shake off the sand, and cutting the pouring riser to form the casting blank. The present invention adopts the casting process of parallel splitting of the rib plate to ensure the compact internal quality of the whole casting and improve the product stability, and the riser is arranged on the machined surface, which greatly reduces the post-processing workload and improves the work efficiency; The segmental casting process forms the isolated part of the upper mold of the casting through sand filling sand cores, reduces the overall height of the upper mold, reduces the amount of molding sand, and improves production efficiency at the same time.

The invention provides a tantalum or niobium or tantalum and niobium alloy additive manufacturing method. The method comprises the following steps that firstly, tantalum powder or niobium powder or tantalum and niobium alloy powder is prepared for 3D printing; and secondly, the prepared tantalum powder or the prepared niobium powder or the prepared tantalum and niobium alloy powder for 3D printing is put into a 3D printer for printing, and then a tantalum or niobium or tantalum and niobium alloy metal product is prepared. By means of the manufacturing method, the cost of raw materials is low, the technological process is simple, the manufactured powder with good fluidity can be directly printed into metal products and artificial material implants according to design drawings or figures converted by scanning bones amputated by doctors, the production process is quick, and post-treatment workload is little.