7results about How to "Not easy to replace" patented technology

The utility model discloses a casting size adjustable metal mold which comprises a bottom plate, a supporting seat is clamped on the top of the bottom plate in a sliding mode, a vertical plate is arranged above one side of the supporting seat, the casting size adjustable metal mold further comprises a splicing device, and the splicing device is arranged between the supporting seat and the vertical plate. The utility model relates to the technical field of metal molds, realizes that the size of the metal mold for casting can be adjusted according to actual production requirements through the matching of the first vertical plate, the second vertical plate, the transverse plate and the connecting rod, and solves the problems that in actual use, the casting size of a traditional metal mold is generally difficult to change, and when the product size needs to be adjusted, the product size is difficult to change. The problems that the production cost is increased due to the fact that a metal mold possibly needs to be redesigned and manufactured and then is put into production, the production progress can be slowed down in the process, metal products meeting the market requirements cannot be produced within specified time, and the market competitiveness of the products is greatly reduced are solved.

This invention provides a method for preparing military-grade transparent glass membrane materials, belonging to the field of high-performance composite membrane technology. The invention includes the following steps: S1 heat treatment of the base fabric, S2 coating preparation, and S3 post-treatment. In the coating preparation process, the raw materials used include PTFE emulsion, fluorinated ethylene propylene copolymer, silane coupling agent, glass microspheres, and nonionic fluorinated surfactants. The PTFE coating is prepared through impregnation, drying, baking, sintering, and cooling processes. This invention overcomes the limitation of existing PTFE membrane strength enhancement relying on the addition of a single component through synergistic innovation in formulation and process. By precisely proportioning PTFE emulsion, glass microspheres, and additives, and synergistically optimizing process parameters, a balance of multiple properties—mechanical strength, flame retardancy, flexibility, and environmental adaptability—is achieved, solving the technical pain points in existing technologies such as the incompatibility between high strength and high peelability, and the contradiction between flame retardancy and processability.

The present application belongs to the technical field of tooling fixture, and discloses a stop block, a stop block preparation method and a fixture. The stop block comprises a base piece, a protection piece and a connecting assembly. The base piece is arranged on a base. The protection piece comprises a mounting cavity, and the base piece can be embedded in the mounting cavity. The protection piece is used for abutting against a product. The base piece and / or the protection piece are detachably connected with the base through the connecting assembly. The base piece is embedded in the mounting cavity of the protection piece. Compared with a 0.1mm-thick Teflon tape or flannelette, the protection piece can provide better buffering performance. Even if the product contacts the stop block with great force or angular deviation, the damage to the product can be effectively reduced. The protection piece can withstand frequent product contact and friction, has good wear resistance and is not easy to break. The protection piece can be used for a long time without maintenance and replacement, thereby reducing the working strength of workers, reducing material costs, and having a positive impact on production efficiency and economic benefits.

Compared with an existing metal expansion bolt, the metal expansion bolt capable of adapting to the wide-range hole diameter is characterized in that an expansion pipe on the metal expansion bolt is changed into a wedge-shaped head expansion strip and a constraint pipe ring, the maximum expansion value of the expansion bolt can be increased by more than one half of the diameter, and when the expansion bolt is used in concrete punching installation accessories, the expansion value can be increased by more than one half. The situation that fastening is not firm due to the fact that the hole diameter is slightly large is avoided, and the success rate of expansion fastening is almost one hundred percent.

This utility model relates to the field of graphite boat technology, specifically to a combined graphite boat locking point. The combined graphite boat locking point includes a connector, a positioning component, a first fixing component, and a second fixing component. The positioning component is detachably sleeved on the connector, and the first and second fixing components are detachably mounted on both ends of the connector, with the positioning component located between the first and second fixing components. The connector, positioning component, and first fixing component form a first positioning groove, and the connector, positioning component, and second fixing component form a second positioning groove. The positioning component, first fixing component, and second fixing component are all made of graphite, and the connector is made of a wear-resistant material. This utility model can increase the replaceability of vulnerable points in the graphite boat locking point to improve its service life, reduce the number of times the graphite boat locking point needs to be replaced to reduce production costs, and thus solve the technical problem of excessively high production costs caused by frequent replacements due to wear in existing graphite boat locking points.

This utility model relates to the field of particle shaping technology and discloses a brown fused alumina airflow shaping machine for dust collection. It includes two support legs, with a tank body fixedly connected to the top of the second support leg. An air supply pipe is fixedly connected to the outer wall of the tank body, and an air inlet pipe is fixedly connected to the outer wall of the air supply pipe. A quick-release assembly is provided on the outer wall of the tank body, including a fixing block. One side of the fixing block is fixedly connected to the outer wall of the tank body, and a threaded rod is rotatably connected inside the fixing block. A gasket is fitted on the outer wall of the threaded rod, and a rotary lock is threadedly connected to the outer wall of the threaded rod. In this utility model, rotating the rotary lock until the connecting plate and the fixing block fix the nozzle, achieving the function of quickly replacing the nozzle through the threaded rod and rotary lock. This solves the problem of difficulty in replacing the nozzle used to spray high-pressure gas in traditional brown fused alumina airflow shaping machines for dust collection when damaged, improving the maintainability of the machine.

The utility model provides an anti-oxidation metal aluminum film laminated steel plate, which belongs to the technical field of steel plates and comprises a base layer steel plate, the base layer steel plate is of a three-layer composite structure and comprises an inner plate and two groups of outer plates, the outer plates are arranged on two sides of the inner plate in the thickness direction, and an anti-oxidation metal aluminum film layer is arranged above the base layer steel plate. An isolating layer is arranged below the base layer steel plate, the base layer steel plate is connected with the anti-oxidation metal aluminum film layer through a bonding layer, and an adhesive layer is arranged between the base layer steel plate and the isolating layer; an auxiliary groove is formed in the edge of the base steel plate, the section of the auxiliary groove is a trapezoidal groove, silver-copper alloy solder is filled in the groove, protective layers are arranged above and below the base steel plate, one group of protective layers is connected with the anti-oxidation metal aluminum film layer through a first connecting layer, and the other group of protective layers is connected with the isolating layer through a second connecting layer. According to the device, a corrosion-resistant foundation structure can be obtained through the base layer steel plate of the three-layer composite structure.